Method and system for forming sheet material into apertured shap

Details Method and system for forming sheet material into apertured shap Method and system for forming sheet material into apertured shap

1984-08-03

1986-07-08

Weston, Caleb

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156267, 156268, 156270, 156344, 156510, 156513, 156584, B32B 3118

Patent

active

045991251

ABSTRACT:
A method and apparatus for providing apertured elements such as reinforcing rings having precisely defined edges without tearing or distortion operates on an elongated strip of first and second sheet material held together by a detachable adhesive. Both perimeters of the desired apertured element are first cut in one sheet of the strip without cutting the other sheet. A second shape, within the inner perimeter of the apertured shape, is cut into the second sheet without cutting into the first sheet, either before or after the cuts in the opposite side. This leaves material within the apertured shape that is held in place by a border due to the adhesive backing. After first sheet material outside the apertured shape is separated from the second sheet, a mechanism is used to overcome the adhesive force at the border and remove the inner cuts simultaneously. Thus only the desired apertured elements are left on the second sheet to be removed for use either at that time or thereafter.

REFERENCES:
patent: 2304787 (1942-12-01), Avery
patent: 3072519 (1963-01-01), Salzman
patent: 3524782 (1970-08-01), Buske
patent: 3878018 (1975-04-01), Cospen et al.
patent: 4328057 (1982-05-01), Gutow

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