Process for fabricating pressure-sensitive adhesive materials

Details Process for fabricating pressure-sensitive adhesive materials Process for fabricating pressure-sensitive adhesive materials

1988-09-22

1989-09-19

Weston, Caleb

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

15624411, 15624412, 15624413, 15624414, B29C 4706

Patent

active

048678180

ABSTRACT:
A process for fabricating label feed stock laminates that comprise label face-paper substrate sheets covered with a layer of pressure-sensitive adhesive film in which the adhesive film is protected by a sheet of release-paper until the label face-paper substrate is to be fastened to a desired surface. The process involves extruding a pressure-sensitive adhesive in the form of a vertical tubular film whose shape is maintained by air pressure; thereafter collapsing the tube into a flat film by passing it through the nip of draw rolls, and then combining the adhesive film with the face-paper and the release-paper to form the desired laminate by passing both of the latter two through the draw rolls simultaneously with the adhesive film.

REFERENCES:
patent: 4379806 (1983-04-01), Korpman
patent: 4430135 (1984-02-01), Schmukler et al.

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