C:\KARO\Produkte\PTC\data sheet

IL-4000 Series
Isostatic Laminators
P a c i f i c T r i n e t i c s C o r p o r a t i o n
� Isostatic Lamination Uses Water to Uniformly
Distribute the Force of Lamination
� No Inaccurate Hard Tooled Presses
� No Expensive Die Sets
� Temperature is Held Constant
� Calibration is Assured
� Isostatic Lamination Works Well with Inserts
Isostatic Lamination Uses Water to
Uniformly Distribute the Force of
Lamination
This process minimizes de-lamination and
gives more uniform shrinkage which
improves yield on complex parts. New
Multichip Module designs employ
multiple ceramic layers with complex
circuit and ground plane conductor
patterns. This additional printed metal
complicates the lamination process. New
designs also include deep cavities and
multistep cavities. Isostatic lamination
compacts parts uniformly regardless of
conductor patterns and cavity topography.
Parts to be laminated are vacuum sealed
in flexible lamination bags. These bagged
parts are loaded randomly into the lamination
chamber which descends into a
reservoir of heated water. The water is
pressurized to thousands of PSI for the
cycle time, about 5 minutes. Pressure is
released and the cylinder raises for part
removal.
Hard Tool Presses Are Inaccurate
Even if the platens of a hydraulic press are perfectly parallel
the part to be laminated is not uniformly thick. This variation
in part thickness can be caused by variations in the
thickness of individual tape layers, a concentration of
silkscreened conductor material, or inconsistent filling of
via holes.
Hard platen presses apply pressure
unevenly to the thickest areas of the
ceramic part resulting in nonuniform
compaction. This nonuniform compaction
expresses itself during the firing
cycle resulting in part warpage.
The fluid used in isostatic lamination
naturally conforms to irregularities in
the part and provides uniform
compaction. Uniform compaction is
the key to uniform shrinkage.
Expensive Die Sets are
Not Required for
Isostatic Lamination
A complex lamination die is not
required since isostatic lamination
provides uniform pressure on all sides
of the part. Layers to be laminated are
stacked on a
backing plate
before they are sealed in the vacuum
bag. This plate can be any material as
long as it is flat and conducts heat. PTC
2875 Loker Ave East, Carlsbad, CA 92008-6626 - Phone: (760) 603-9000 - FAX: (760) 603-9090

IL-4000 Series Isostatic Laminators
P a c i f i c T r i n e t i c s C o r p o r a t i o n
Temperature is Held Constant
The large thermal mass of the lamination cylinder and fluid
bath, over 1000 lbs of steel and water, resist temperature
fluctuations. The fluid reservoir is held at a constant temperature
by immersion heaters. The cylinder is raised out of
this reservoir only when parts are being loaded. Parts are
submerged back into the reservoir and reach lamination
temperature quickly. In addition to assuring repeatable
lamination temperature this also reduces cycle time.
Calibration is Assured
Platen presses must be calibrated for parallelism as well as
pressure and temperature at various points. During isostatic
lamination, pressure and temperature are at equilibrium so it
is only necessary to verify the accuracy of front panel
gauges to insure calibration of the process.
Specifications
Cavity Dimensions:
Maximum Temperature:
Maximum Pressure:
Cycle Time:
Patent:
Facility Requirements
Power:
Compressed Air:
Water:
Dimensions:
W x D x H (Inches)
Weight:
Isostatic Compression Works Well with
Inserts
Inserts are a useful and often necessary tool to form deep
and multistep cavities. When hard platen pressing is used
these inserts must be perfectly matched to the expected
shrinkage of the ceramic during lamination. When using
isostatic lamination the fluid will compensate for variations
between the insert and the part. Compliant inserts, typically
silicone, work well to transmit fluid pressure to the ceramic
part.
IL-4004 IL-4008 IL-4012 IL4014
4 x 6.5 x 1.5 8 x 15 x 3 12 x 15 x 5 14 x 18 x 6
80° Centigrade Same Same Same
5000 psi 5000 psi 5000 psi 5000 psi
.1 sec. to 9,999 hrs. Same Same Same
Typ. 3 to 5 minutes
U.S. Patent #5057171 Same Same Same
220 Volts/15 amps 220 Volts/25 amps 220 Volts/25 amps 220 Volts/30 amps
50/60 Hz 50/60 Hz 50/60 Hz 50/60 Hz
100 psi, 5 SCFM Same Same Same
Clean Shop Air
Tap water is used to
make up for Same Same Same
evaporation
24 x 24 x 28 36 x 30 x 60 36 x 36 x 60 46 x 44 x 76
426 lbs 1630 lbs 2300 lbs 3500 lbs
Pacific Trinetics Corporation
2875 Loker Ave East
Carlsbad, CA 92008
Phone: (760 603-9000
Fax: (760) 603-9090
e-mail: info@PTChips.com
www.PTChips.com
PTC
P a c i f i c T r i n e t i c s C o r p o r a t i o n