Process for making multilayered, formable laminates

Details Process for making multilayered, formable laminates Process for making multilayered, formable laminates

1987-10-07

1990-01-09

Thurlow, Jeffery

Plastic and nonmetallic article shaping or treating: processes

Direct application of fluid pressure differential to...

Producing multilayer work or article

264102, 264171, 264216, 264236, 264245, 264554, B29C 4706, B29C 5102, B29C 5110, B29C 5114

Patent

active

048927007

ABSTRACT:
A process for making a multilayered formable plastic composite laminate and a process for its manufacture which includes preparing an acrylic composition which includes the reaction product of a mixture of predominantly an acrylic monomer and a substantially lesser amount of a polymer thereof, at least one free radical reaction initiating reaction catalyst, and optionally, a chain length regulating agent or a cross-linking agent; deaerating the acrylic composition; casting the deaerated acrylic composition upon a sheet or laminate of a thermoplastic material; and curing the cast acrylic composition in several successive stages so as to substantially polymerize the acrylic monomer and to permit penetration of the acrylic composition preferably to a depth of between about 0.001-0.1 inch into thermoplastic material to form a laminate having a uniform and gradual acrylic/thermoplastic interphase, rather than a sharp separation between the layers thereof, so as to prevent delamination during further processing operations. These laminates are then thermoformed into various shaped articles.

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