Separating laminated layers

Details Separating laminated layers Separating laminated layers

1977-11-16

1980-08-05

Goolkasian, John T.

Adhesive bonding and miscellaneous chemical manufacture

Differential fluid etching apparatus

With microwave gas energizing means

156584, B32B 3500, B32B 0712

Patent

active

042160480

ABSTRACT:
Laminate layers, such as a label and its liner, are separated by directing both layers at an end of the laminate around a sharp bend to cause shearing and lengthwise offset between the layers, and then releasing the end, the overall orientation being such that, upon release of the end, a differential in the forces that tend to straighten the layers drives apart the shear-weakened adhesive bond. The bending is carried out by sliding the end around a sharply curved surface.

REFERENCES:
patent: 2422998 (1947-06-01), Adams et al.
patent: 2754994 (1956-07-01), Cole
patent: 3107814 (1963-10-01), Auger et al.
patent: 3266797 (1966-08-01), Stievenart

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