TITLE: MULTILAYERED FORMABLE COMPOSITE LAMINATES AND METHOD OF MAKING SAME.
European Patent Application EP0380587 A1

ABSTRACT:
Abstract not available for EP0380587
Abstract of corresponding document: US4892700
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.

INVENTORS:
Guerra, Carlos
Lee, John
Johnson, Mark

APPLICATION NUMBER: EP19880909946
PUBLICATION DATE: 08/08/1990
FILING DATE: 10/06/1988

ASSIGNEE: POLYCAST TECHNOLOGY CORP (US)
INTERNATIONAL CLASSES: B32B27/30; B29C39/10; B29C51/10; B29C51/14; B29C69/02; C08J5/12;
B29K33/00; B29K33/04; B29L9/00; (IPC1-7): B29C51/14; B29C71/02;
B29D7/01; B32B27/00
EUROPEAN CLASSES: B29C51/14; C08J5/12

FOREIGN REFERENCES:
4168342 Method of preparing laminates and said laminates
FR1059224A
FR2352668A
FR2287475A

OTHER REFERENCES:
See also references of WO 8903295A1