Method for the thermal adhesion of parts made of acrylic plastic and parts made of engineering plastics
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United States of America Patent
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Jul 29, 2003
Grant Date -
N/A
app pub date -
Nov 3, 1995
filing date -
Nov 4, 1994
priority date (Note) -
Expired
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Abstract
The invention concerns a method for the production of a flat composite (5) from plastic parts by means of a thermal adhesion of two plastic parts (1,1'), heated on one side of their surfaces (1a,1a'), consisting of plastics A and B, wherein the surfaces (1a,1a') are heated on the adhesion side to surface temperatures of 10 to 100.degree. K. above the Vicat softening points VET (according to DIN ISO 306) of the pertinent plastics A and B, provided that the plastic parts (1,1') retain their original shape during the preheating phase, and are pressed between a pair of rolls (2,3), at an advance rate between 5 and 200 mm/sec and with a pressing force between 10 and 500 N acting on the roll (3); preferably, the plastics (1,1') exhibit engraving or embossing (6,6'), with which composite (5) can be produced with a three-dimensional inclusion (7) of a defined shape; furthermore, a flat or elongated object (8) is embedded between the plastic parts (1,1') to be adhered during the adhesion of the composite (5).
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