Apparatus and method for sequential shrinking of packaging film

Details Apparatus and method for sequential shrinking of packaging film Apparatus and method for sequential shrinking of packaging film

1992-09-14

1993-03-16

Bennet, Henry A.

Drying and gas or vapor contact with solids

Apparatus

With means to treat gas or vapor

53442, 53557, 34 60, 34225, 34216, 34217, F26B 700

Patent

active

051932903

ABSTRACT:
An apparatus and method is provided to shrink a heat shrinkable film wrapped around a product so as to produce a neat, wrinkle free finished package. As the product is transported along a conveyor path, first a bottom portion of the shrinkable film is shrunk by hot air; second, both side portions of the shrinkable film are shrunk by hot air; and third, the top portion of the shrinkable film is shrunk by warm water. The warm water employed is maintained at a temperature which is lower than that of the hot air so as to avoid wrinkles or damage to the film while efficiently shrinking the film.

REFERENCES:
patent: 4676006 (1987-06-01), Tolson
patent: 4738082 (1988-04-01), Saitoh
patent: 5062217 (1991-11-01), Tolson

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