Processing and working instructions HPL and HPL elements PR ...

PRODUCT INFORMATION 

Processing and working instructions 

HPL and HPL elements 

TIPS IN ADVANCE: “PLEASE NOTE!” 

The stress on tools when working with DUROPAL HPL is relatively high, due to the corresponding hardness 

of the surface, which is laminated with melamine resin. Working with DUROPAL HPL therefore requires 

tools with carbide-tipped blades, and for certain processes even diamond-tipped tool blades. In order to 

achieve the best results when working with unbonded panels, please note the following requirements: 

• Always work on a firm, level surface 

• Vibrations and flapping of the panels should be avoided at all times 

• Sharp blades and smooth tool function are important. Damage, splintering or bulging of the décor side 

is usually due to incorrect processing or unsuitable tools. Caution: Any nicks or notches created will 

lead to the formation of cracks in the event of later temperature or humidity fluctuations! 

If the décor surface is pushed over the supporting surface, take care to use a guide or support which 

moves along with the DUROPAL HPL. When machining with the aid of power tools, corrugated support 

surfaces can also be used as an alternative, which will ensure that the contact area is kept to a minimum. 

1. STOrAgE AND TrANSPOrT 

1.1 Transport 

When transporting loose sheets, please take care to ensure that the sheets are lifted correctly during 

loading and unloading. The décor side should be face up when removed from the vehicle. Smaller, individual 

panels should be carried with the décor side held towards the body. In the case of 

larger sizes, sagging of the panels can be avoided by carrying them arched around the 

lengthwise axis or transporting them with the décor side rolled up facing inwards. Avoid 

any type of movements which might cause abrasion of the panels. When transporting 

large quantities of panels, it is advisable to stack them on pallets, although always with 

adequate protection of the décor side. 

099 PI Processing and working Page 1 of 34 

instructions


1.2 Storage 

DUROPAL HPL must be protected against damp and should be kept in storage areas 

with normal climatic conditions. Stacks of panels should be stored horizontally - or 

inclined at an angle of 80°, in which case care should be taken to ensure that the panels 

are supported over the entire surface, and prevented from slipping by a counterweight 

on the ground. The panels should always be placed with the décor sides facing each 

other. Please follow the acclimatisation instructions before use – see “Preliminary treatment”! 

1.3 Storage of DUrOPAL real metal laminates 

The panels should ideally be stored in closed rooms under normal interior room conditions (temperature 

18–25 °C, relative air humidity 50–65 %). The panels must always be stored horizontally, with the edges 

flush, on a level surface, and be covered with plastic film. Where this is not possible, the panels should be 

inclined at an angle of 80°, in which case care should be taken to ensure that the panels are supported 

over the entire surface, and prevented from slipping by a counterweight on the ground. The top panel must 

be completely covered by a cover board. 

DUROPAL real metal laminates are supplied with a laminated film which is heat-resistant up to 

80 °C. This protective film should be removed after six months at the latest, otherwise damage 

may occur to the metal surface. 

1.4 Storage of DUrOPAL HPL elements 

Store on a dry, level surface under normal climatic conditions wherever possible, e.g. in a warehouse, so 

that the Duropal HPL elements are not exposed to the direct effects of water or moisture. Avoid exposure to 

direct sunlight. 

099 PI Processing and working instructions Page 2 of 34


2. CUTTINg TO SIZE 

2.1 DUrOPAL HPL sheets 

Many tools are suitable for cutting DUROPAL HPL, although all of them must have 

certain properties. 

Handsaw 

For individual cuts, saws with fine-toothed blades and minimal teeth alteration are 

recommended. Always cut at a steep angle to the sheet surface. 

Electric nibbler 

Particularly suitable for curved cuts, and can also be used for stationary installation on bench-tops. 

Hand-held circular saw 

Always turn the décor side down when processing. Always use a fence in order to obtain straight, 

neat cuts. 

Electric jig saw 

Always turn the décor side down when processing. Ensure that the undersurface is clean, and ideally 

protected by felt. 

Circular saw bench 

The décor side must always face upwards. The panel requires good contact pressure in the area of the saw 

blade, e.g. by means of a batten or ideally height-adjustable pressure rollers. Accurate saw guidance and 

correct blade protrusion must be ensured at all times. A circular table saw can also be used to cut sheets in 

stacks. Carbide-tipped saw blades have a long service life, but must be handled very carefully because of 

their high sensitivity to shocks and impacts. 

Tooth spacing: 10 – 15 mm 

Speed: 3,000 – 4,000 rpm 

Cutting speed: 50 – 100 m/s 

Feed speed: 10 – 30 m/min 

Saw blades with carbide-tipped, concave teeth cutting with both sides produce the cleanest cut edges. 

Saw blades below 2 mm in thickness are in most cases not rigid enough, and will result in imperfect edges. 

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The usual tooth shapes 

The flat tooth, the simplest variant, is easy and inexpensive to re-sharpen. 

The replaceable tooth is the universal tooth shape for sizing and cutting for counter rotation. 

The benefits come from the cut width separation and the tip advance. 

The Duplovit tooth offers a low tip advance and double-sided shaft angle due to its hollow 

grinding. The benefits also come from the double-sided engagement of the teeth, although there 

is no cut width separation. Maintenance is also more complex. 

The Duplovit tooth with double-sided chamfer is the special shape and usually the only 

possibility of obtaining a clean upper and lower cutting edge without use of a scoring blade. 

Maintenance is even more complex. 

The roof Duplovit is a combination of roof and Duplovit tooth. The face-angled tooth ensures 

preliminary cutting and holds the saw blade very stable laterally. The Duplovit tooth with its tip 

advance and double-sided shaft angle ensures neat edging with long tool life. Advantages: 

• optimum edges thanks to the four-way cut separation 

• universal saw blade for craft businesses 

The trapezoid flat tooth: Besides the individual tooth shapes, there are also tooth shapes in 

groups, called grouped teeth. The trapezoid flat tooth has a slightly higher flat tooth chamfered 

on both sides, followed by a slightly lower flat tooth without chamfer. This produces a very good 

cut edge due to the 5-way cut separation, although maintenance is again very complex. 

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2.2 Cutting Duropal HPL elements on one and both sides on core material 

Cutting with circular saws 

The quality of the cut edge also depends on the height setting of the saw blade. If in the case of core 

materials laminated both sides the upper cut edge is not clean, a higher setting of the saw blade is 

recommended, and in the case of an unclean lower cut edge, a lower setting of the saw blade. 

The best stop position must be determined in advance in individual cases. The best results are obtained 

with a pre-scoring saw. The combination of other factors also affects the quality of the cut edges: 

• Tooth shape 

• Number of teeth 

• Cutting speed 

• Feed speed 

• Entry and exit angle 

2.3 Cutting of Duropal window boards 

Use vibration-free, carbide-tipped circular saws or fine-toothed, slightly straight-set handsaws. 

2.4 End caps for Duropal window boards 

The end caps made from ABS plastic simplify the sealing of the exposed edges, and are available in all 

profile variants and the matching colours of white and beige. 

The end caps should be matched to the size of the window board. Coat the end caps and the edges with 

adhesive, e.g. Sikafex-221, leave to dry for approx. 2 minutes and then press the end caps firmly into 

place. The adhesive hardens after about one hour, producing a visually attractive and proper sealing of 

the exposed edges. 

2.5 Cutting and feed speed 

See the chapter “Technical information” for a description of how the cutting and feed speed determine the 

quality of the cut. 

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3. CUT EDgE FINISHINg AND PrOFILINg OF DUrOPAL HPL ELEMENTS 

Sawing should generally take place from the panel surface (décor side). 

3.1 Manual edge finishingg 

a) File, sandpaper, scraper 

These materials are well suited for the finishing of edges. When finishing edges, always 

file in the correct direction from the décor towards the core material. The edges should 

be finished with fine files, sandpaper (100 – 150 grade) or scrapers. Routered edges 

should first be slightly finished using sandpaper, then drawn off with the scraper and 

finally finished with fine sandpaper. Ensure that any sanding particles are completely 

removed. 

b) Plane 

For manual planing, we recommend the use of metal planes with HSS blades, 

working at a cutting angle of approx. 15°. 

c) Hand router 

Protruding DUROPAL HPL panel edges can be milled flush with the aid of this tool. In order to protect 

the surface when working, the surface on which the hand router is supported should be coated with a 

non-abrasive material. Routing waste should be carefully removed before every new step. 

Diameter of router: 10 – 25 mm 

Speed of rotation: 20,000 rpm 


Carbide-tipped router cutters are particularly suitable, and for larger diameters can also be fitted with 

cutting inserts. Better tool utilisation can be achieved with the aid of height adjustability and parallel-axis 

cutting. To look after your tools, ensure a panel overhang of no more than 2-3 mm. 



3.2 Edge finishing with stationary machines 

Spindle moulder 

Routing and cutting heads with replaceable carbide-tipped blades and inserts are most suitable for these 

tools. The use of cylindrical tools must be determined individually according to use: 

• Parallel-axis cutting for panels laminated on one or both sides 

• Cutters inclined on one side for panels laminated on one side only 

• Herringbone-tooth cutters for panels laminated on both sides 

If only DUROPAL high-pressure laminates are being milled, a speed of 12,000 rpm should be selected 

for a thickness of up to approx. 5 mm and a tool diameter of 100 mm. (Also note in this connection the 

maximum speed of the tool!) 

If the panels are bonded, a lower speed of 3,000-6,000 rpm is recommended. 

The tool life per height setting often differs significantly according to the type and shape of the tool, 

and also the cut quality required and the core material used. 

For large production runs, it is an advantage to use tools with diamond-tipped cutters. is a beneficial 

solution. 

router used as spindle moulder 

Routers used as spindle moulders need single- or double-cutting carbide-tipped tools with a cutting speed 

of 10-15 m/s. This tool should also be used for internal recesses (see chapter “Internal recesses and 

cut-outs”). 

Core panels laminated on one side can be guided for vertical milling on a template – core panels laminated 

on both sides and loose DUROPAL high-pressure laminate on the other hand are best milled all round 

with only one clamping device. A 2 mm cutting allowance is sufficient in most cases. For curved edges, the 

milling requirement can be minimised by pre-cutting the approximate shape in advance using a band saw. 



Surface planer 

Feed speed: 5 – 15 m/min 


Speed of rotation: 3,000 rpm 

For large production runs, carbide-tipped blades should be used, since normal jointer blades have only 

a short tool life. 

Double-end profilers 

This process is characterised by economic processing, particularly for large production runs. The equipment 

from the spindle moulder (see above) is also advisable in this case. 

3.3 Edge finishing of Duropal window boards 

Edge sanding is recommended in order to avoid stress cracking under temperature and/or humidity stress. 

3.4 Profiling of the edges of elements 

The profiling of element edges, e.g. for the post-forming or soft forming process, requires tools such as the 

hand router, spindle moulder or the double-end profiler. 

4. DrILLINg OF DUrOPAL HPL AND DUrOPAL HPL ELEMENTS 

4.1 general 

Please note: Drill holes in DUROPAL HPL should always be 0.5 mm larger than the screw 

diameter. The screws need this slight clearance all round to prevent cracks forming in the 

area around the drill hole in the event of temperature and humidity fluctuations. Raised 

countersunk head screws require rosette washers. For our DUROPAL window boards, 

use only plastic washers. 



4.2 Drilling tools 

Twist bits 

Twist bits specially designed for plastics have a large pitch (steep twist) with wide cutting grooves). 

Tip angles of 60°- 80° are ideal for drilling DUROPAL HPL. 

Combi-bits 

Combi-bits or carbide disc drills are suitable for larger diameter drill holes. 

Step bits 

Step bits are ideal for drill holes of any type; this technique avoids double drilling. 

Hole cutters 

Hole cutters with guide pins should be used for larger drill hole diameters. If using adjustable hole cutters 

with guide pins, the hole must be drilled from both sides. 

4.3 Drilling technique 

When adjusting the drilling rate, ensure that the melamine surface of the DUROPAL HPL is not damaged. 

The cutting speed for HSS drills is approx. 0.8 m/s, and for carbide-tipped drills up to 1.6 m/s. The advisable 

feed rate is 0.02-0.05 mm/rev, corresponding to 1,000 revolutions for 20-50 mm drilling depth/min. 

The possible accumulation of material at the exit of the drill bit can be avoided by using a hardwood or 

laminate underlay. For large production runs, even better results can be achieved using drilling jigs, which 

are equipped with drilling bushes on both sides to enable firm clamping. For countersinking, the guideline 

speeds should be halved. 



5. INTErNAL rECESSES AND CUT-OUTS OF DUrOPAL HPL ELEMENTS 

5.1 general 

The corners of cut-outs should never have sharp angles, since these would quickly 

become damaged. Sharp edges can only be achieved by the joining of different cut 

pieces. 

Internal corners must always be rounded, with a minimum radius of 5 mm. In the case of 

internal recesses and cut-outs of over 250 mm side length, the radius must gradually be 

increased in accordance with the length of the side. 

Rounded internal recesses can be produced directly with a router, although for exact results, the corresponding 

radius should be pre-drilled. Ensure that the edges are free of notches. When planning to install 

heat sources, e.g. halogen lamps, the cut-out should be designed to include sufficient extra clearance, 

or should be insulated. 

The DUROPAL HPL surface should not be subjected to prolonged exposure to temperatures in excess 

of 70 °C. The different expansion coefficients should also be noted if using a combination of different 

materials. 

5.2 Processing of Duropal HPL worktops 

Due to the high-quality lamination of the top and reverse side, DUROPAL HPL worktops are reliably 

protected against the penetration of water and steam. During processing however, unprotected edges 

and joints can be created. Such exposed areas should therefore always be sealed during the course 

of the final assembly of the DUROPAL HPL elements. Otherwise the general instructions of 5.1 apply. 

5.3 Tools 

Please see chapters 2, 3 and 4. The tools and usage possibilities described also apply for the production 

of internal recesses and cut-outs. 



6. TECHNICAL INFOrMATION 

6.1 Tool information 

Material Work step Tool 

HPL Panel cutting 

HPL on raw 

chipboard panel 

















Cutting to size 

Cutting to size 

Routing edges 

Routing edges 

Grooving 

Circular 

saw bench 

Circular 

saw bench 

Double-end 

profiler (scoring 

and cutting) 

Spindle moulder 

or automatic 

edge-finisher 

Double-end profiler 

(re-milling) 

Circular 

saw bench 

Cutting speed 

in m/s 

40 – 60 

40 – 60 

40 – 60 

40 – 60 

40 – 60 

40 – 60 

Grooving Spindle moulder 40 – 60 

Grooving 

Double-end 

profiler 

Grooving Router 

Grooving 

Drill 

Automatic dowelling 

machine 

40 – 60 

Speed in rpm Feed in m/min 

approx. 

3,000 – 4,000 

approx. 

3,000 – 4,000 

approx. 

6,000 

approx. 

6,000 – 9,000 

approx. 

6,000 

approx. 

3,000 – 4,000 

approx. 

6,000 

approx. 

6,000 – 9,000 

approx. 

12,000 – 18,000 

approx. 

3,000 – 6,000 

10 – 30 

By hand 

approx. 10 

Mechanically 

approx. 6 - 20 

approx. 

6 - 20 

approx. 

3 - 8 

approx. 

3 - 8 

approx. 

6 - 20 

approx. 

3 - 8 



6.2 Feed speed 

Time for 

travel 

in s 

Feed speed in m/min. for processing lengths in m 

1 2 3 4 5 6 7 8 9 

1 60 120 180 240 300 360 420 480 540 

2 30 60 90 120 150 180 210 240 270 

3 20 40 60 80 100 120 140 160 180 

4 15 30 45 60 75 90 105 120 135 

5 12 24 36 48 60 72 84 96 108 

6 10 20 30 40 50 60 70 80 90 

7 9 17 26 34 43 52 60 69 77 

8 7,5 15 22,5 30 37,5 45 52,5 60 67,5 

9 6,7 13 20 27 34 40 47 54 60 

10 6 12 18 24 30 36 42 48 54 

Example: Processing length 5 m, feed speed 50 m/min. – time for travel: 6 s 



6.3 Cutting speed 

Cutting speed v in m/s in relation to tool diameter and speed 

Tool diameter 

in mm 

Cutting speed v in m/s 

400 20 40 60 80 100 120 140 

380 19 38 57 76 95 114 133 

360 18 36 54 72 90 108 126 

340 17 34 51 68 85 102 119 

320 16 32 48 64 80 96 112 

300 1) 15 30 45 60 75 90 105 

280 14 28 42 56 70 84 98 

260 13 26 39 52 65 78 91 104 

240 12 24 36 48 60 72 84 96 108 

220 11 22 33 44 55 66 77 88 99 110 

200 10 20 30 40 50 60 70 80 90 100 120 

180 2) 9 18 27 36 45 54 63 72 81 90 108 135 

160 8 16 24 32 40 48 56 64 72 80 96 120 144 

140 7 14 21 28 35 42 49 56 63 70 84 105 126 

120 6 12 18 24 30 36 42 48 54 60 72 90 108 126 

100 5 10 15 20 25 30 35 40 45 50 60 75 90 105 

80 4 8 12 16 20 24 28 32 36 40 48 60 72 84 

60 3 6 9 12 15 18 21 24 27 30 36 45 54 63 

40 2 4 6 8 10 12 14 16 18 20 24 30 36 42 

20 1 2 3 4 5 6 7 8 9 10 12 15 18 21 

10 0,5 1 1,5 2 2,5 3 3,5 4 4,5 5 6 7,5 9 10,5 

Speed n of the tool 

shaft in rpm x 1,000 

1 2 3 4 5 6 7 8 9 10 12 15 19 20 

Examples: 

1) Carbide-tipped circular saw blade 

2) Synchronously adjustable router head with clamped herringbone-shaped reversible carbide tips 



7. WOrKINg WITH DUrOPAL HPL AND DUrOPAL HPL ELEMENTS 

7.1 general 

DUROPAL HPL with a thickness of less than 2 mm needs a flat, stress-free core material with minimum flex. 

A smooth surface is an essential requirement for a permanently good result. The right adhesives, application 

quantity, pressure and press temperature are equally important. 

Since DUROPAL HPL may be subject to slight dimensional changes, depending on the air humidity and 

temperature, these properties must always be taken into account when working with DUROPAL HPL. 

7.2 Core material 

The following table describes the suitability of different materials as cores and their application possibilities. 

With all such information, it should be noted that the properties of a core materials of different composition 

(e.g. honeycomb with frame) can have an effect on the surface texture of the DUROPAL HPL. This should 

be checked in advance and taken into account. 

Material/properties and suitability as core material 

Chipboard panels 

On free supporting constructions, the necessary thickness must be taken into account. 

The fixing of the flat bonded element depends on the thickness and size of the panel. 

The surface quality of the DUROPAL HPL element depends largely on the structure of the 

chipboard panel construction, i.e. the shape of the chips, resin content, density, and in 

particular on the sanding quality of the surface. Multi-ply chipboard panels are suitable 

as core materials. The panels should be evenly sanded on both sides in order to prevent 

bowing and visual surface defects. 

In order to enable a short bonding and pressing time, ensure good surface absorption 

properties if you are using water-based bonding system. The surface must also have a 

resistance to delamination strength of at least 1.2 N/mm2 to avoid detachment of the 

laminate (DIN 52 366). Please contact us in the event of any further questions on these 

special chipboard panels. 



MDF panels Particularly suitable for profiling, although not self-supporting in low thicknesses. 

Hard fibre panels 

Plywood panels 

Veneered panels 

Not self-supporting. Surface textures containing paraffin must be sanded before bonding, but are 

usually supplied already treated. Density 850 kg/m3, other properties according to EN 622. 

Self-supporting. In order to ensure a smooth surface preferably use laminboard with narrow strips 

and a softwood covering layer. 

Thin panels are not self-supporting, the fixing method depends on the thickness and size. 

Softwoods such as poplar and abachi are suitable for bonding. 

Solid timber Should only be used for small areas. Risk of deformation! 

Honeycomb 

structure 

Foam materials 

7.3 Preliminary treatment 

Suitable as a component of composite core materials or in combination with a framework 

construction. 

Self-supporting for vertical surfaces, also suitable as a component of composite panels. Excellent 

heat insulation. Hard foams on a synthetic resin basis, such as polystyrene, PVC, phenol, polyurethane, 

are suitable for bonding. Please consult the manufacturer in all cases before bonding. 

The DUROPAL HPL and the core materials must always be conditioned together, in order to equalise the 

moisture content of the components. Materials with too high a moisture content tend to contract after a 

period of drying. This can result in cracks and distortion. Materials which are too dry are difficult to work 

and can later expand, once again leading to distortion. The correct conditioning is achieved at a room 

temperature of approx. 18–25 °C and 50–65 % relative humidity. 

The following points must also be observed: 

• adequate air circulation around the DUROPAL HPL for at least 10 days. 

• alternatively the core panels and laminates can be stored for at least three days, stacked in the same 

order as they will later be bonded together. In this case, the air humidity should be similar to that in 

which the panels will later be used. 



• DUROPAL HPL which is intended for a DUROPAL HPL element should be stacked for at least three days 

with the reverse sides facing each other. Joint conditioning together with the core material can then be 

dispensed with, provided that this has been stored properly. If the DUROPAL HPL will later be exposed 

to consistently low relative air humidity, the conditioning should be carried out accordingly, e.g. 

20 hours at 40 °C or 10 hours at 50 °C. The adhesives should be stored at room temperature. Bonding 

must be carried out immediately after conditioning. 

Please note: This information applies only for processing in normal climatic conditions. For extreme 

conditions, please consult us. 

7.4 Stress equalisation 

When two different materials are bonded together, tension always occurs. Core materials must therefore 

be laminated on both sides with materials which are subject to the same dimensional changes under the 

effects of heat and moisture. This applies particularly if the finished composite panel is to be self-supporting, 

and will not be held by any rigid construction. As the size of the surface increases, more care needs 

to be taken in selecting a surface to balance it, as well as the density, symmetry of structure and rigidity of 

the core. 

The best results will be achieved by selecting the same DUROPAL HPL type in identical thickness for the lamination 

on both sides. When using HPL with film (for protection of the surface), care must again be taken 

to ensure a symmetrical arrangement. The DUROPAL HPL cut-outs must always have the same direction of 

grain. DUROPAL HPL must be bonded to the core material using the same sanding direction on both sides. 

It is best to use our HPL balancing material of equal thickness or also best suited for this purpose. 

7.5 Working with DUrOPAL real metal laminates 

The working of different types of materials into composite elements always leads to stresses between the 

different materials. Core materials must therefore be laminated on both sides with materials which are subject 

to the same dimensional changes under the effects of heat and moisture. Particular care must be taken 

to maintain symmetry of structure if the composite element is to be self-supporting. When working with 

DUROPAL real metal laminates, the correct direction of the décor pattern must also be followed. To make 

this easier, the protective film is marked with direction arrows to show the direction of the décor. 



7.6 Bonding 

Please note: For the gluing and bonding of DUROPAL HPL, adhesives should be used which have 

good adhesive strength and adequate resistance to extremes of temperature and moisture. 

7.6.1 Adhesives, overview 

• Dispersion adhesives (e.g. PVAc adhesives = white adhesives) 

• Condensation resin adhesives (e.g. urea, resorcinol and phenolic resin adhesives) 

• Contact adhesives (e.g. polychloroprene [PCP] adhesives) 

• Mixed adhesives (e.g. epoxy, unsaturated polyester and polyurethane adhesives) 

• Hot-melt adhesives (for special applications only) 

For the suitability of adhesives, please consult the following table: 

Wood-based 

core materials 

(panels or 

honeycomb) 

Paper 

honeycomb 

Foams and 

honeycomb 

made of: 

Dispersion adhesives 

e.g. PVAc 

adhesives 

Condensation 

resin adhesives 

e.g. urea, resorcin 

and phenol 

resin adhesives 

Contact adhesives 

e.g. polychloroprene, 

nitrate rubber 

adhesives 

Mixed adhesives 

e.g. epoxy, 

polyurethane 

adhesives 

Hot-melt 

adhesives 

n n n n n 

n n n n n 

n 2) n 2) 

• Polystyrene n 1) n 1) 

• PVC 

• Phenol n n n n n 

• Polyurethane n 2) n n n n 

1) Without ingredients which attack polystyrene 

2) PVC or polyurethane and adhesives must be suitable for each other 



7.6.2 guideline values for the stress resistance of adhesives (empirical) 

Adhesive type 

Dispersion adhesives: 

Temperature resistance 

(approximate values) 1) 

PVAc adhesives -20 to +70 °C D 1/D 2 

2-component PVAc adhesives -20 to +100 °C D 3 

Condensation resin adhesives: 

Urea resin with high 

elongation agent component 

-20 to +120 °C D 2 

Melamine/urea resin -20 to +120 °C D 3/D 4 

Phenol, resorcin resin -20 to +140 °C D 3/D 4 

Contact adhesives: 


without hardener 


with hardeners 


with resin hardeners 

Reaction adhesives: 

Epoxy, unsaturated polyester 

and polyurethane adhesives 

-10 to +50 °C D 1 

-10 to +100 °C D 2 

Stress resistance in accordance 

with DIN EN 204 2) 

Consul manufacturer Consul manufacturer 

-20 to +100 °C D 3/D 4 

Hot-melt adhesives -10 to +60 °C D 1 

Special hot-melt adhesives -10 to +90 °C D 1 

The specified guideline values refer only to the bonded joint. 

1) The specified plus values refer to short-term stress (up to 30 min.) up to these maximum temperatures. 

2) The core material and edge protection must comply with the relevant stresses.. 

The figures on temperature resistance apply only for short-term stress to the bonded joint. 

The long-term resistance of the composite element depends on several factors, such as the type and class 

of the DUROPAL HPL, air humidity, temperature effects and the core material. Since the adhesives within 

the groups listed how different properties and are under continual further development, the manufacturer 

should always be consulted for special applications. 



7.6.3 Bonding procedure 

Preparation work: Clean both sides of the core material and the DUROPAL HPL thoroughly. 

Dust, grease, oil or perspiration can leave marks on the surface after bonding. 

These can be easily removed with organic solvents (e.g. acetone, white spirit or petrol). 

Further instructions on cleaning and care of DUROPAL HPL are given in the chapter of 

the same name “DUROPAL HPL”. 

Bonding should be carried out at a temperature of approx. 18-25 °C and a relative air humidity of 50-65 

%. We recommend carrying out a test under the same conditions which will prevail during bonding. For all 

types of solvents and hardeners, please follow the safety instructions of the professional trade associations. 

7.6.4 Edging of DUrOPAL window boards 

The DUROPAL window board is a wood-based material. Wood-based materials can show signs of 

swelling under the effect of moisture. It is therefore advisable to seal all exposed cut edges properly 

before installation: this applies particularly for the Eco type. 

Sealing can be carried out using high-quality DUROPAL HPL edging strips or end caps, and also with 

simpler edging materials. According to available experience, Sealing with waterproof and temperature- 

resistant adhesives or a sealant such as Sikaflex-221 is also sufficient in some cases to prevent the 

penetration of moisture (please follow the corresponding usage instructions for the adhesive or sealant). 

For the sealing of exposed cut edges, every carton pack contains the corresponding DUROPAL HPL 

edging strip. In instances where work has to be carried out more quickly, we offer the types Reno and 

Hydro window boards with significantly improved swelling properties, which can also be installed without 

corresponding edge sealing. However, if the front profile edge is to be plastered in, or if the possibility 

exists that it might come into direct contact with water, the edge in the profile area must also be properly 

sealed for the types Reno and Hydro. This also applies if the original width has to be cut down. In this case, 

the rear long edge must be sealed for all types. 



In order to achieve good results, please stick to the guideline values of the following table. 

It should also be taken into account that these values depend on the working and climate conditions, 

as well as the type of core material and the adhesive quality. 

guideline values for bonding 

Adhesive type 

Dispersion adhesives: 

PVAc adhesives 

2-component 

PVAc adhesives 

Condensation 

resin adhesives: 

Urea resin, 

melamine/urea resin 

Phenolharz, 

Resorcinharz 

Contact adhesives: 

with and without 

hardener 

Adhesive 

application 

in g/m 2 

90 – 150 on HPL 

or core material 








and core material 

Waiting time 

(open) 1) in min. 

1 - 30 

1 – 30 depending 

on component 

composition 

Pressing 

pressure 

2) 3) 

in bar 

approx. 

3 

approx. 

3 

2 - 20 3 - 5 

approx. 2 – 15 3 - 5 

Depending on 

ambient temperature 

and adhesive type 

(finger test) 

Pressing temperature / 

pressing time 4) Proce - 

dure 

20 °C 40 °C 60 °C 

8 - 60 

min. 

4 - 12 

min. 

45 - 160 

sec. 

According to manufacturer’s 

specifications 

15 – 

180 min. 

5 – 30 

min. 

1 – 12 

min. 

Depending on hardener system 

approx. 

8 hrs. 

Pressing time 

depending on 

hardener system 

At least 5 At least 1 min. pressed c) 

with added hardener These are special adhesive settings for which no general guideline values can be specified. 

Reaction adhesives: 

Epoxy, unsaturated 

polyester and polyurethane 

adhesives 

Hot-melt adhesives 



180 – 300 



Depending on type 

Extremely short 

Stack 

pressure, 

store flat 

Pressure 

roller 

Depending on type and hardener 

system 

195 – 220 °C 

(adhesive application temperature) 

1) According to DIN 16920, the waiting time (open) = the time between application of the adhesive and placing the surfaces 

together for bonding. To this is added the waiting time (closed) = the time between placing the adhesive surfaces together 

and achievement of the full pressing pressure or other measures causing bonding (hardening) (e.g. the hardening tempera- 

ture). When bonding in the heating press, the full pressure must be applied immediately after loading the press, in order to 

prevent distortion of the composite elements or premature drying of the adhesive coating. 

2) 1 bar ≈ 1 kp/cm 2 = 0,1 N/mm 2 ≈ 100 k Pa 

3) calculate the pressing pressure for hydraulic presses, see the Appendix (Item 8) 

4) The pressing time is not always identical to the time until reaching final strength. Depending on the procedure, an adequate 

time interval must be left after pressing before further processing. 

099 PI Processing and working instructions Page 20 of 34 

a) 

a) 

b) 

b) 

d) 

e)


Pressing temperature 

To produce tension-free DUROPAL HPL elements, a pressing temperature of approx. 20 °C is recommended. 

At higher temperatures, the setting times can be reduced. A temperature of 60 °C should not be 

exceeded during pressing, since this may result in bowing and a change in the surface texture. For special 

bonding at higher pressing temperatures, please note the following guideline values, in order to avoid 

damage to the material. In case of bonding systems which require a higher temperature, please consult us. 

Temperature Time 

70 °C 10 min 

80 °C 5 min 

90 °C 3 min 

100 °C 2 min 

Applying the adhesive and the pressing procedure 

Spread the adhesive evenly and sparingly over the complete surface. For DUROPAL HPL elements, both 

sides must be coated with the same amount of adhesive in order to avoid bowing. This applies particularly 

to water-based bonding systems. 

general calculation of the pressing pressure for hydraulic presses 

For the setting of the correct pressing pressure with different panel dimensions, it is important is to calculate 

the piston pressure and the corresponding manometer pressure. 

Please use the following formula for the calculations: 

Necessary pressure in bar Panel area in cm² = manometer pressure 

x 

Number of pistons Piston area in cm² in bar 

Piston area = r²π 



The application of the individual adhesives is explained below: 

a) Dispersion adhesives 

These include PVAc adhesives and 2-component PVAc dispersion adhesives. Apply the adhesive with a 

toothed spreader or hand roller. This can also be done with adhesive application machines or four-roller 

machines. Cold pressing is carried out using screw clamps, spindle presses or single-/multi-daylight presses, 

and warm pressing with single- or multi-daylight presses, short cycle presses, roller presses or double-belt 

presses. Take care to observe the pressing times/temperatures accurately with sparing and even adhesive 

application. 

b) Condensation resin adhesives 

These include urea resin, melamine-urea resin, phenolic resin and resorcinol resin. Phenolic- and resorcinol 

resin are used principally for DUROPAL HPL elements which require high resistance to exposure to flames. 

Condensation resin adhesives require corresponding additives in order to make the adhesive joint elastic. 

The guideline values can vary according to the hardener type. Impurities consisting of remains of adhesive 

or hardener cannot be removed from the DUROPAL HPL surface after bonding without damaging the material. 

Ensure therefore that these are completely removed before bonding. For cold and warm pressing, the 

same tool specifications apply as for dispersion adhesives. 

c) Contact adhesives 

Without hardener: When applying with a toothed spreader, the application direction on the core material 

and laminate should be at right-angles to one another. The adhesive can also be applied with a brush, 

or by spraying and pouring systems. In all cases, great care and good ventilation must be ensured when 

working. Contact adhesives require a short, powerful contact pressure. The open time can be reduced by 

accelerated drying of the adhesive films, although over-drying should be avoided. Dried-on adhesive films 

can be reactivated by heat, e.g. infrared radiation. 

The pressing procedure is carried out as described. 

With hardener: This adhesive enables higher stress and temperature resistance of the joint. For further 

information, please consult the manufacturer. 

d) Mixed adhesives 

General working recommendations cannot be given here, since this category is divided into different types 

and used only for special bonding. 

e) Hot-melt adhesives 

These are used principally for edge bonding. 



7.6.5 Post-forming 

The core material 

It is important to use a material which has an even distribution of the chip sizes or thickness over the whole 

cross-section, e.g. chipboard panels or MDF. Coarse chips in the central layer of the panel can lead to 

formation of cracks in the HPL, depending on the quality of the milling. 

Profile milling 

Ensure that the profile has even transitions between rounded and flat areas, and is properly sanded. 

The radius of a post-formed product is defined as the radius of the profiled core material. 

Conditioning 

Follow the recommendations on storage and preliminary treatment. The postforming results can be adversely 

affected by deviations from these recommendations, particularly in an over-dry environment. 

Bonding procedures for post-forming and coating 

In order to avoid the formation of cracks, any surplus adhesive must be completely removed. This applies 

particularly at transitions between rounded and flat areas. The same special adhesive should be used for 

DUROPAL HPL and the balancing material, e.g. PVAc adhesive or contact adhesive. 

Procedures depending on system configuration (example) 

Das Durchlaufverfahren ist in folgende Schritte gegliedert 

• Sawing and profile milling of the core material 

• Pressing of the DUROPAL HPL (standard type P = post-formable) and balancing material 

• Router the edge of the balancing material 

• Application of the adhesive to the underside and edge of the DUROPAL HPL (approx. 120–180 g/m 2 ) 

• Post-forming at 160-210 °C. A test is advisable. For continuous post-forming, the feed speed should be 

11-17 m/min 

• Removal of any projecting DUROPAL HPL by using a coarse cutter, followed by fine cutter at an angle 

of approx. 30°. 

Heat transmission 

In principle, two different methods can be used: 

• Infra red heat: stationary or continuous. 

• Direct heat: stationary. 



Both systems require sufficient heat to enable the subsequent post-forming. Thin DUROPAL high-pressure 

laminates require only a short heating period, and must be processed correspondingly faster. With continuous 

post-forming, the bending should begin at the end of the heating input. Any machine systems should 

be run up to their ideal dosing before the actual post-forming procedure, since every material responds 

better to a different speed and temperature. It is important that the DUROPAL HPL is exposed to uniform 

heat throughout the whole cross-section before the bending process is started. The corresponding required 

temperature depends on the laminate thickness, the surface texture and the bend profile. 

For continual processing machines, the maximum heating output must be set at the corresponding variable 

speed. Continuous post-forming should be carried out if possible using a fixed bending block. 

For stationary machines, a test run should be carried out in order to determine the optimum heat effect in 

relation to the bending speed. This should ideally be started at a high temperature, and the speed adjusted 

accordingly. With heating rails, the initial duration should be kept short, and maintained continuously 

during post-forming. 

Avoid too low a temperature in order to prevent the formation of cracks. Discoloration can occur if the 

temperature effects are too high, sometimes also accompanied by cracking, deformation or blistering. 

Post-forming properties of DUrOPAL real metal laminates 

All DUROPAL real metal laminates are produced in post-forming quality. At a thickness of 0.8 mm, a radius 

of 8 mm or larger can be produced for brushed surfaces, and a radius from 10 mm upwards for smooth 

surfaces. 



8. WOrKINg rECOMMENDATIONS FOr DUrOPAL HPL-SOLID 

DUROPAL HPL-Solid has a high weight factor. Its material value is considerable! 

Please therefore note the following recommendations for treatment and processing 

recommendations for the treatment and processing of DUrOPAL HPL-Solid 

8.1 Transport and storage 

8.1.1 Transport 

• When transporting stacks of panels, always use adequately large, level and stable pallets. 

• The pallets must be secured against slipping. The panels in the stack must also be secured against 

slipping. 

• Foreign bodies and abrasive impurities in the panel stack must be avoided, since these could cause 

indentations and damage to the panels. 

• When loading and unloading, lift the panels individually by hand or with suction lifters, without allowing 

them to slide against each other. 

8.1.2 Storage 

• The material should ideally be stored in closed rooms under normal interior room conditions 

(temperature 18-25 °C, relative humidity 50-65 %). 

• The material must always be stored horizontally, with the edges flush, on a level surface, 

and be covered with plastic film. 

• The top panel must be completely covered by a covering panel. 

• Stacks of panels must be wrapped in protective foil. 

8.2 Conditioning 

• DUROPAL HPL-Solid should be stored before use together with the core material for at least eight days 

at 20 °C and 50 % relative humidity. 

• Please ensure that the materials do not become too damp. 



8.3 Processing 

8.3.1 Cutting 

• For cutting, we recommend the use of carbide- or diamond-tipped saw blades, as also used for the 

processing of DUROPAL HPL. 

• With DUROPAL HPL-Solid, a lower feed speed should be used than for DUROPAL HPL elements. 

• For compact laminates with décor on both sides, damage to the lower décor layer can be effectively 

avoided by changing the exit angle. This can be achieved by varying the height setting of the saw blade. 

• Good results can also be achieved by placing plywood, hard fibre panels or DUROPAL HPL under the 

panels. 

• Optimum cut quality of the lower edge can be achieved by using a pre-scoring device. 

8.3.2 routing and drilling 

• For routing, we recommend carbide- or diamond-tipped routers with high rotational accuracy, in order to 

minimise chatter marks. The use of special router heads has proven useful for processing large quantities 

of panels. 

• Due to the high cutting pressure, secure tool guides and fences are essential. 

• Cutting marks on the milling surface are unavoidable. These can be reduced by using a mechanical 

router and by milling in the same direction. Any remaining marks can then be removed by sanding and 

polishing. 

• Further improvements in the appearance of the edge can be achieved by treatment with silicon-free 

furniture oils. 

• Projecting corners and edges should be chamfered in order to avoid the risk of injury. 

• Drills used for plastics are most suitable for drilling. 

• Splintering of the DUROPAL HPL-Solid on the outlet side can be avoided by working on a firm surface 

and gradually reducing the feed speed. 

• Drills with a tip angle of 50-60° should preferably be used for through-holes. 

• Ensure when centre-drilling that a minimum of panel material remains. 

• This requires a minimum remaining thickness for blind holes of at least 1.5 mm, and at least 3 mm 

for holes parallel to the surface. 

• In all DUROPAL HPL-Solid, threads can be cut and self-tapping screws used without any problems. 



8.3.3 Internal recesses and cut-outs 

• For internal recesses and cut-outs, particular care should be taken to round off the corners. 

• The internal radius must be at least 5 mm. 

8.3.4 Bonding of material 

• Bonded joints must be made so as not to hinder the dimensional changes of the DUROPAL HPL-Solid. 

• Care must also be taken to ensure that the panels are all bonded in the same direction. 

8.3.5 Post-forming 

• The area to be formed must be milled out on one side to approx. 1 mm, depending on the desired radius. 

• During the milling process, overheating must be avoided and exact tool and tool guidance ensured, 

in order not to impair the post-forming properties. 

• DUROPAL HPL-Solid is formed in a stationary postforming press under exposure to heat. 

• After cooling of the formed DUROPAL HPL-Solid, the remaining cavity is filled out with hardening 

synthetic resin while still in the stationary postforming system, or reinforced by the insertion of adapters. 

8.3.6 Fixings 

• For the attachment of rigid objects (e.g. profiles, rails, fittings), the through-holes in DUROPAL HPL-Solid 

should be drilled slightly larger. 

• In the case of blind holes (e.g. splay dowels), the holes for the objects to be attached should also be 

made slightly larger. In this case too, the use of a lubricant between the object and the DUROPAL HPL- 

Solid is advisable. 

• Self-tapping screws with a low pitch produce good screw-holding values. The holes must however 

always be pre-drilled in all cases! The hole diameter should be one thread depth smaller than the outer 

diameter of the screw. When inserting screws, the drill hole must be at least 1 mm deeper than the 

penetration depth of the screw. Screws should be lubricated before insertion. 



• The highest screw retention strength is achieved by using splay dowels – These must not however have 

any cutting burrs. The remaining thickness of the DUROPAL HPL-Solid must be at least 1.5 mm! The use 

of expansion plugs parallel to the panel plane is not recommended. 

• For a through-attachment, the drill holes should be made at least 2-3 mm larger than the diameter of 

the attachment fitting. The necessary freedom of movement can also be achieved by the use of elastic 

sleeves (e.g. of polyamide). 

8.3.7 Doors 

• Small doors (e.g. for furniture) made of DUROPAL HPL-Solid can be fitted with two hinges. 

• Large doors for toilet cubicles and changing rooms should be attached by more than two hinges, 

in order to provide the necessary dimensional stability. 

• The necessary expansion play for the DUROPAL HPL-Solid must be taken into account in the selection 

of the hinges. To reduce the play, the door leaf should be cut lengthwise from the panel. 

• The frame construction must be stable, level and stress-free; the door latches, locks and any necessary 

rubber seals must also not introduce any constant tensions into the door leaf. 

• The continual effect of increased air humidity and/or high temperature on one side of the door can 

lead to distortion of the panel. Adequate circulation must therefore be ensured. 

8.3.8 Assembly 

• The sub-construction and DUROPAL HPL-Solid change under the effect of relative air humidity and 

temperatures. Care must be taken during assembly to ensure adequate play of the attachment, so that 

the underneath construction and panelling can move accordingly. 

• The following should also be noted for panelling: 

• The stability of panelling is determined by the sub-construction and thickness of the panelling material. 

• The sub-construction must be protected against corrosion and rotting. 

• Adequate rear-ventilation must be ensured. In case of inadequate back-ventilation, this can result in 

distortion due to different climatic conditions on the front and rear side. If no adequate back-ventilation 

can be provided due to construction reasons Duropal HPL-Solid MR with a moisture barrier must be 

used in order to counteract any bowing. 

• DUROPAL HPL-Solid muss must be left with the necessary freedom of movement (expansion and 

contraction). 

• A particular advantage of DUROPAL HPL-Solid is that joints or divisions of the panels can be arranged 

so that installations are also accessible at a later date. 



8.3.9 Joints 

• If two DUROPAL HPL-Solid panels are joined using tongue and groove, the 

following approximate values apply: Groove width a approx. d/3 

Groove side thickness b approx. d/3 

Tongue length c ≥ 10 mm 

Panel thickness d ≥ 10 mm 

• Because of possible dimensional changes, DUROPAL HPL-Solid must be 

installed with adequate play between the tongue and groove. 

• DUROPAL HPL-Solid below 10 mm thickness should not be joined using a tongue and groove joint. 

• It is advantageous to use a joint with a “false tongue” is also advantageous, since it enables the 

complete use of the panel size, and simplifies processing. 

• According to the anticipated stress, corner connections should be made using only brackets or corner 

rails. 

9. Cleaning and care of DUrOPAL HPL 

Please note our instructions on the cleaning and care of DUrOPAL HPL! 

The following information refers to the surfaces of decorative DUROPAL HPL to EN 438 and elements 

made using it. The cleaning instructions apply both for soiling under normal use and for heavier soiling 

which might occur during the fitting and installation of DUROPAL HPL elements. DUROPAL real metal laminates 

should be cleaned using a soft cloth and a mild cleaning agent without any abrasive components. 

Stubborn marks can be removed with white spirit. The use of acetone is not recommended. 

general instructions 

DUROPAL HPL, due to its resistant, hygienic and sealed surface, requires no special care. It is easy to 

clean. Special cleaning substances are not required. Furniture polishes and cleaning agents containing 

wax should not be used. The mildest possible substances should be used for cleaning. Materials containing 

abrasive components should not be used under any circumstances. Sometimes special cleaners have to be 

used for cleaning which can be corrosive or inflammable, or contain solvents. In such cases, the applicable 

accident prevention regulations must be observed, and the rooms adequately ventilated. The product designation 

markings applied in the factory consist of a water-soluble ink, and should therefore be removed 

using only water. 



Cleaning recommendations 

Cleaning instructions and example explanations of special problems are given below. The mildest method 

should always be used first. 

Slight, recent soiling 

Normal soiling, longer-acting 

Heavy, stubborn soiling, old stains 

Dust, dirt, dust-grease mixture, pencil, chalk 

Paper towels; soft, clean cloths (dry or damp); sponge etc. 

When cleaning damp, wipe dry with absorbent paper towels. 

Clean, hot water, clean cleaning rags or cloths, soft sponge or brush. Micro- fibre cloths soaked in 

hot water are particularly suitable. 

Apply normal cleaning agents without abrasive components, washing-up liquid, soft or hard soap 

and leave to soak in according to the level of soiling, and then remove completely in order to prevent 

streaks from forming. Wipe dry with clean, and absorbent cloths (ideally paper towels), changing the 

cloths frequently. 

grease, oil, fingerprints, felt and marker pens, inks, nicotine deposits, 

rubber abrasion marks 

Cleaning method as for dust, dirt, pencil, chalk. 

Cleaning method as for dust, dirt, pencil, chalk. Organic solvents such as acetone, white spirit, 

petrol, nail-varnish remover. 

Leave detergent or paste produced from detergent and water to act overnight; liquid cleaner with 

very fine polishing powder. 

Do not use on high-gloss surfaces 

Mild bleaching agent (with care). 

Should only be used occasionally! Bleaching agent should be removed completely after 

a short action time (10 – 15 minutes)! 



Limescale remains, water marks, rust 



Leave detergent or paste produced from detergent and water to act overnight; liquid cleaner 

with very fine polishing powder. 

Do not use on high-gloss surfaces! 


Should only be used occasionally! Bleaching agent should be removed completely after a 

short action time (10 – 15 minutes)! In case of particularly stubborn limescale, cleaning agents 

containing acids can also be used (10% acetic or citric acid). 

Coffee, tea, fruit juices, sugar solutions 



Leave detergent or paste produced from detergent and water to act overnight; liquid cleaner with 

very fine polishing powder. 





Wax remains, wax crayons 


Cleaning method as for dust, dirt, pencil, chalk. Organic solvents such as acetone, white spirit, petrol, 

nail-varnish remover. Paraffin and wax remains should be removed mechanically. Avoid scrapers. 

Use a plastic or wooden spatula. Iron off remains using blotting paper. 









Lipstick, shoe polish, floor polish, wax polish, marker 


Cleaning method as for dust, dirt, pencil, chalk. Organic solvents such as acetone, white spirit, 

petrol, nail-varnish remover. 







Bacteriological soiling 

(soap remains, skin cells, pathogens, blood, urine, excrement) 



Additional treatment with disinfectant according to the applicable conditions. Steam-cleaning 

is possible. 







Darker patches after treatment with solvents (streaking) 





Water-soluble paints, stains, emulsion paints, adhesives, dispersions (PVAc) 


Water or organic solvents 


Soften with water or organic solvents, then peel or rub off. 

Paints, varnishes and adhesives containing solvents 

(paint residue, splashes, spray paints and stamping ink) 

Organic solvents. 

Organic solvents such as acetone, white spirit, petrol. 

In case of production processes using adhesives and paints, prior consultation with the manufacturer 

is recommended on which cleaning agent is most suitable for the removal of possible soiling caused 

during production. 

Soften with water or organic solvents, then peel or rub off. 

Paint residue can also sometimes be removed mechanically after drying. 

Two-component paints and adhesives such as synthetic resins, e.g. urea resin 

These must be removed immediately! Water or organic solvents. Cleaning is only possible before 

hardening! 

Remove immediately after contact with water or organic solvents. 

In case of production processes using adhesives and paints, prior consultation with the manufacturer 

is recommended on which cleaning agent is most suitable for the removal of possible soiling caused 

during production. 

No cleaning possible! Remains of hardened condensation and reaction resin adhesives cannot 

generally be removed after hardening. 

Silicone, sealants, furniture care substances 

Rub dry; silicone-remover. 

Silicone-remover. 



Important instructions 

During use, please clean the DUROPAL HPL surface regularly. Special cleaning substances are not 

generally required. Streaks can occur when cleaning with organic solvents containing oil (e.g. white spirit), 

as well as with cold water and frequently used cloths or window leathers. To ensure cleaning does not 

result in dark patches and streaks, the surface should be rinsed with hot water and then wiped dry using 

normal household paper towels. Avoid using furniture polishes and cleaning agents containing wax as 

these tend to impair the surface textures of the DUROPAL HPL surfaces and build up into a dirt-retaining 

layer. For regular cleaning, please do not use any abrasive agents; furniture polishes, furniture cleaning 

and bleaching agents should also be avoided. 

Cleaning agents containing strong acids or salts will damage the surface (limescale removers based on 

formic and aminosulphuric acid, drain cleaner, hydrochloric acid, silver polish and oven-cleaner). 

Please note when cleaning with solvents: 

• Follow accident prevention regulations 

• Open the windows 

• Do not expose to naked flames 

If you have any questions, please feel free to contact us at any time. 

Closing statement: 

All the information contained here is based on the current status of the science and technology. 

It does not constitute a guarantee. It is the personal responsibility of the individual user of the products 

described in this data sheet to observe the existing laws and regulations. 

A service of 

PFLEIDERER Industrie GmbH • Product Management 

Holzstraße 6 - 10 • D-33332 Gütersloh • Telephone: 0 52 41 / 8 71 - 0 • Telefax: 0 52 41 / 8 71 - 9 87 

e-mail: produktmanagement@pfleiderer.com • Internet: www.industrie.pfleiderer.com

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