Method for producing heat shrinkable package with a frangible ac

Details Method for producing heat shrinkable package with a frangible ac Method for producing heat shrinkable package with a frangible ac

1984-04-02

1986-05-06

Coan, James E.

Package making

Methods

Forming a cover adjunct or application of a cover adjunct to...

53415, 53442, 493363, 493963, B65B 6118

Patent

active

045863121

ABSTRACT:
An apparatus and method is disclosed for providing a heat shrinkable package with a frangible access panel therein defined by perforations disposed in the heat shrinkable package. A novelty of the method and apparatus resides in the perforation of the heat shrinkable material prior to passing the package through a heat shrink oven. The package is oriented on a conveyor with the perforations adjacent to the conveyor, enabling the perforated portion of the package to be subjected to less heat than the remainder of the package, enabling formation of the heat shrink package without severing the perforations defining the access panel.

REFERENCES:
patent: 2847915 (1958-08-01), Rapp
patent: 3286830 (1966-11-01), Robb, Jr.
patent: 3309789 (1967-03-01), Denker
patent: 3640049 (1972-02-01), Fritz et al.

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