High profile shrink package

Details High profile shrink package High profile shrink package

1989-09-01

1990-09-25

Spruill, Robert L.

Package making

Methods

With contents treating

53442, 53449, 53453, 426124, 426129, 426396, B65B 1152, B65B 1158, B65B 3102, B65B 5302

Patent

active

049584804

ABSTRACT:
The present invention involves a method of packaging a product including drawing a thermoplastic thermoformable web into a thermoforming mold to form a cavity, inserting the product into the cavity, moving the web and product to a vacuum chamber, placing a tray, upside down, in the chamber on top of the web to define an unsealed package; sealing the tray to the web under vacuum; and shrinking the bottom web.

REFERENCES:
patent: 2621129 (1952-12-01), Ramsbottom et al.
patent: 3387427 (1968-06-01), Perdue
patent: 3674626 (1972-07-01), Mergy
patent: 4034536 (1977-07-01), Mahaffy et al.
patent: 4611456 (1986-09-01), Gillio-tos et al.
patent: 4642239 (1987-02-01), Ferrar et al.

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