Method and apparatus for laminating a dried adhesive film to a s

Details Method and apparatus for laminating a dried adhesive film to a s Method and apparatus for laminating a dried adhesive film to a s

1982-07-09

1984-08-07

Dawson, Robert A.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

118 68, 118642, 1562757, 1563799, 156499, 156555, 427 55, B32B 3112

Patent

active

044642202

ABSTRACT:
The invention relates to a method and apparatus for laminating a film (e.g. of transparent polypropylene) to a substrate (e.g. paper stock bearing printed matter). The method and apparatus comprises coating the film at a station incorporating a pair of contra-rotatable rollers rotatable about parallel, horizontal axes and defining a nip. One roller has a portion of its periphery immersable in a bath of water-based adhesive, (e.g. a mix of ethylene and vinyl acetate). The coated film is stripped from the roller and fed to a first infra-red heater tuned to a frequency which evaporates the water content of the adhesive; a laminating station comprising a first pair of contra-rotatable pinch rollers comprising a metal roller and a rubber roller rotatable about parallel axis and defining a nip; a second infra-red heater, also tuned to a frequency that activates the solids of the adhesive adhering to the film; and a second pair of pinch rollers comprising two metal rollers defining a nip.

REFERENCES:
patent: 2788838 (1957-04-01), Crabbe et al.
patent: 3658620 (1972-04-01), Hall
patent: 3869330 (1975-03-01), Anderson et al.
patent: 3923585 (1975-12-01), Vouillemin
patent: 3981762 (1976-09-01), Davis et al.
patent: 4218285 (1980-08-01), Durr et al.
patent: 4225376 (1980-09-01), Berg
patent: 4311731 (1982-01-01), Messer

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