Thermoforming system for masked polymers

a technology of thermoforming system and masking polymer, which is applied in the direction of application, chain saw, manufacturing tools, etc., can solve the problems of difficult removal of adhesive bonding agent difficult application of masking, and difficult removal of adhesive bonding agent completely from the substrate surface, etc., to achieve energy saving, reduce thermoforming temperature, and superior optical clarity
US20050053789A1Inactive Publication Date: 2005-03-10PERCYS PERFORMANCE PLASTICS
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
PERCYS PERFORMANCE PLASTICS
Publication Date
2005-03-10
Estimated Expiration
Not applicable · inactive patent

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Abstract

In a thermoforming system for masked polymer substrate sheets, a temperature resistant, non-stick coating is applied to a sheet of a polymer substrate material. The coated sheet is positioned on a flexible platen positioned over a mold having a predetermined shape. Heat is applied until the polymer reaches a thermoforming temperature and softens, whereupon the platen is lowered to stretch over and cover the mold. When the sheet begins to conform to the mold, the heat is withdrawn and a second platen is lowered over the sheet to urge it into conformance with the mold. The temperature resistant coating can be applied over an existing polymer film masking, and rapidly cures to form a non-stick surface which prevents adhesion of the masked polymer sheet to the platen surfaces.
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Description

BACKGROUND OF INVENTION

[0001] 1. Field of the Invention

[0002] The present invention is concerned with a system for thermoforming masked polymer substrates.

[0003] 2. Description of the Related Art

[0004] Transparent and selectively transparent thermoformable polymeric synthetic resin compositions are employed to form a variety of products such as lenses, windows, housings and a wide-variety of containers and coverings. These polymer compositions are particularly well-suited for automotive use because they provide glass-like optical clarity yet are substantially lighter in weight and offer greater crash safety. High polymer thermoplastic compositions such as polycarbonate, present a superior substrate for molded windshields and windows for vehicles of all types, for example, racing cars, motorcycles, all terrain vehicles, automobiles, heavy equipment, boats and aircraft, as well as for skylights and windows used in conventional housing and mobile homes.

[0005] The clear polymer sub...

Claims

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