Method of making multilayer edge-sealed record carrier

Details Method of making multilayer edge-sealed record carrier Method of making multilayer edge-sealed record carrier

1977-12-16

1980-06-17

Powell, William A.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156249, 156252, 156256, 156277, 156289, 40 22, B32B 3100, G09F 302, B42D 1502

Patent

active

042082315

ABSTRACT:
In one method of making the record carrier, a paper sheet is formed with an almost completely perforated punch or blanking line defining a paper insert or core, and a separating layer is applied to the upper surface of the paper sheet in bordering relation with the punch or blanking line. A thin film border is positioned on the separating layer and overlaps, inwardly, the punch or blanking line. A backing film is provided with a silicone separating layer congruent with the paper insert, and is applied to the back of the paper sheet. The thus assembled layers are then laminated to each other. The paper insert and the thin film border are then printed, without transition, in at least one printing operation. After the printing, the backing film and the paper sheet are separated from the paper insert and the thin film border. The resulting composite insert or core is then sealed between the two transparent films. In another method, a paper insert is positioned on a backing film and embedded therein. The paper insert and the film area surrounding the paper insert are then printed, without transition, in at least one printing operation. The resulting composite insert or core is then sealed between the two transparent films.

REFERENCES:
patent: 2588067 (1952-03-01), Whitehead
patent: 3413171 (1968-11-01), Hannon
patent: 3414998 (1968-12-01), Berger
patent: 3533176 (1970-10-01), Weitzberg et al.
patent: 4006050 (1977-02-01), Hurst et al.
patent: 4096015 (1978-06-01), Kawamata et al.

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