Plastic and nonmetallic article shaping or treating: processes – Mechanical shaping or molding to form or reform shaped article – Shaping against forming surface
Patent
1976-03-01
1978-07-25
Kucia, Richard R.
Plastic and nonmetallic article shaping or treating: processes
Mechanical shaping or molding to form or reform shaped article
Shaping against forming surface
264134, 264136, 264320, B29J 102
Patent
active
041029755
ABSTRACT:
A method of forming a flexible sheetlike structure such as an automotive headliner by treating a sheet of fiberboard or other similar material with water at an elevated temperature to make the sheet sufficiently ductile to permit forming without tearing or blowing, and placing the water-treated sheet between heated dies to form the sheet to a compound curvature by the application of heat and pressure. The sheet may or may not be perforated. The method also includes finishing one side of the die-formed sheet by securing a decorative or sound-absorbing layer thereto. The sheet is placed on a support and the layer is applied over the adhesive coated upper surface of the sheet. A cover is draped over the support to provide an air seal over the layer and sheet and is drawn against the support by differential pressure, either pressure or vacuum to press the layer against the sheet and adhere the two together.
REFERENCES:
patent: 2338685 (1944-01-01), Dee
patent: 2414177 (1947-01-01), Smith
patent: 2595501 (1952-05-01), Aicher
patent: 2924852 (1960-02-01), Michalko
patent: 3675692 (1972-07-01), Jeans
patent: 3758357 (1973-09-01), Akerson
patent: 3948708 (1976-04-01), Doerer
patent: 3983677 (1976-10-01), Lundbom
Kucia Richard R.
Van Dresser Corporation
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