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tions with EPDM. They have also been successfully applied to NBR, PVC, ASA, acrylics, ABS and polyester, sometimes in combination with Whitfordprovided or approved primer systems. In anticipation of new market trends, Whitford has carried out extensive development in the formulation of Xylan coating variations for specific use on TPE (TPV/TPO) substrates. Pretreatment In many cases, a clean, contamination-free surface is all that is required to achieve a good bond of Xylan to the sealingsystem surface. In other situations, depending on the type of substrate and the required end application, pretreatment is necessary. Such pretreatment can take the form of physical methods such as corona discharge or flaming techniques, both of which are easy to control and environmentally friendly. Recently developed oxygen-plasma techniques represent excellent physical pretreatment methods for preparing rubber and plastic surfaces for the application of Xylan. In many off-line situations in which this is unsuitable, a range of primers available from Whitford can be used. Ease of Application Xylan coatings have been de- Xylan is applied on the glass-run channels of the Peugeot 406 Series to reduce friction and to provide resistance to abrasion and protection for the seal against environmental attack, assuring a long, trouble-free service life. signed to ensure maximum convenience and ease of application for the extruder or fabricator. In virtually all cases, the coatings can be applied using one of two methods: 1.As part of an integral on-line extrusion process, applied directly after extrusion and processed with the substrate, or, if preferred, at a later stage, possibly after partial cure or “blowing” of the profile compound in question. The Mercedes-Benz M-Class uses Xylan on seals to provide outstanding abrasion resistance for the life of the vehicle. 2. As a post-fabricating/extrusion operation, the coatings can be applied to a finished part and cured separately. Usually, Xylan is applied by spray techniques, but grades are available that have been specially formulated for easy application by wiping or brushing.
VW chooses chooses Xylan Xylan Toyota chooses Xylan The Whitford Test Matrix: Meeting Performance Specifications Test Specification Rating Requirement Adhesion ASTM D-3359 or No adhesion loss 5 tape pulls “Popsicle stick” No adhesion loss 180˚ bend Xenon arc SAE J1960 Minimum 4 2000 hours (Ford) AATCC and visual 2500kJ Xenon arc SAE J1960 Minimum 4 1250kJ (GM) AATCC and visual Xenon arc SAE J1960 Minimum 4 2500kJ (Whitford) AATCC and visual Ice release SP-TP 102 No ice sticking Record force Toluene: SP-TP 88 # rubs to damage 100 double rubs double rubs film (after 24 hours) Glass Chisel 1 kg on dense No break in 20,000 cycles (Honda, GM) coating Glass Chisel 3 kgs on dense No break in 10,000 cycles (Toyota) TSM 1708G coating Crocking: dry Mercedes DBL No wear through in 500 cycles; record (Mercedes- 5578.30 coating min 4.5 actual Benz) 500g load DIN 54002 Crocking: Ford- WSB- No break in 500 cycles; record wet M2D49A2 900 gm load coating actual 70˚C Water SPS 105 No delamination 1 day: record results. immersion or damage to Repeat DBL 5578.30 coating dry abrasion test Humidity Whitford test or No blistering or 7 days/38˚C, 95% or “Cataplasm” adhesion loss 14 days Oven aging Whitford test No cracking, 72 hrs @80˚C. Testing tackiness or according to matrix adhesion loss procedure previously indicated CoF ASTM D1894 Static: 1.1 Record actual (Ford) Dynamic: 0.9 CoF PSA D41 or Static: >0.5 Refer to part (Whitford) ASTM D1894 Dynamic: >0.5 drawing Glass Mitsubishi ESX- Measure force Refer to part adhesion 60058, 4:8 drawing Cold flex DBL 5578.30 No cracks or loss of adhesion Record actual Muddy water TSM 1708G 3000 cycles, no Record actual abrasion test break in coating, minimum rating 4 Honda chooses Xylan Mercedes-Benz chooses Xylan Nissan chooses Xylan Rover chooses Xylan
Page 1 and 2: Xylan ® Xylan ® AUDI BMW CITROËN
Page 3: Xylan coatings and the many benefit
Page 7 and 8: 2b. Noise suppression: Xylan elimin

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