Manufacture of articles of polyvinyl chloride foil with sealed-i

Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor

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Details

156273, 156290, 156301, 156477B, 281 21R, 281 29, 156292, 1563084, B29C 2702, B29C 2704

Patent

active

042160464

ABSTRACT:
A method of manufacturing articles of softened polyvinyl choride reinforced with a reinforcement material. The method includes the steps of coating one surface of each of two perforated polyvinyl chloride foils with a terpolymer of vinyl chloride, vinyl acetate and an unsaturated carboxylic acid bringing the coated surface of each of the foils into contact with an opposite surface of said reinforcement material, sealing the portions of the foils situated along the edges of the reinforcement material in a high frequency field to form sealed seams and pressing the foils and interposed reinforcing material at an elevated temperature and pressure to secure the foils to the reinforcement material.

REFERENCES:
patent: 2478132 (1949-08-01), Schade
patent: 2647071 (1953-07-01), Schade
patent: 2788041 (1957-04-01), Carver
patent: 2831706 (1958-04-01), Miller
patent: 2977271 (1961-03-01), Lutwack
patent: 3398036 (1968-08-01), Viesturs
patent: 3953056 (1976-04-01), Roberts

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