Process and apparatus for coating an air-permeable container wit

Details Process and apparatus for coating an air-permeable container wit Process and apparatus for coating an air-permeable container wit

1976-10-26

1978-05-30

Klein, David

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156287, 156311, 156382, 229 15B, 264268, B32B 2710, B65D 556

Patent

active

040922014

ABSTRACT:
A process for lining an air-permeable container, such as a paper cup, with a thermoplastic foil by directing a warm pressurized stream of gas to press the foil into place and varying either the flow rate or temperature of the gas stream or both to guarantee the foil shape within the container while it is thus controllably cooled and solidified. The apparatus includes a controllable discharge valve, such as a relief valve formed at the edge of a spring loaded cover through which gas is supplied, for allowing a faster gas flow for cooling than used for deep drawing the foil. Either one or two gas supplies may be used. In the case of two, the gas supply for cooling is at a higher pressure than that used for deep drawing and is preferably at a lower temperature.

REFERENCES:
patent: 2509439 (1950-05-01), Langer
patent: 2559573 (1951-07-01), Unwin
patent: 2736065 (1956-02-01), Wilcox
patent: 2891280 (1959-06-01), Politis
patent: 3134307 (1964-05-01), Loeser
patent: 3528865 (1970-09-01), Amberg et al.
patent: 3697369 (1972-10-01), Amberg et al.
patent: 3933562 (1976-01-01), Cruckshank et al.
patent: 3957558 (1976-05-01), Lee et al.

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