Stock material or miscellaneous articles – Structurally defined web or sheet – Nonplanar uniform thickness material
Patent
1991-01-28
1992-07-28
Van Balen, William J.
Stock material or miscellaneous articles
Structurally defined web or sheet
Nonplanar uniform thickness material
428198, 4283171, 4283177, 4283184, 264321, B32B 2908, B32B 326
Patent
active
051340143
ABSTRACT:
A heat moldable composite panel is particularly useful as an automotive headliner and other as structural parts which must have heat and sound insulating properties as well as sound absorbing properties. The panel comprises a corrugated core which is advantageously dual arched core or corrugated metal foil, with opposite sides. One side is covered by a linerboard and is attached to the core through thermoplastic adhesive. The opposite side is covered by a thermoformable foam layer which is attached to the core by heat activatable adhesive. The entire structure is formable in a molding die at relatively low temperatures.
REFERENCES:
patent: 4131702 (1978-12-01), Alfter et al.
patent: 4262050 (1981-04-01), Jenkins
patent: 4877671 (1989-10-01), Stagg et al.
patent: 4886696 (1989-12-01), Bainbridge
Landry J. Christopher
Zaima Harold H.
Eften, Inc.
Van Balen William J.
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