Method and apparatus for vacuum packaging

Details Method and apparatus for vacuum packaging Method and apparatus for vacuum packaging

1987-07-27

1989-01-10

Culver, Horace M.

Package making

Methods

Skin packaging

53433, 53453, 53478, 53487, 53509, 53511, 53556, 53559, B65B 1152, B65B 3102, B65B 4702, B65B 4710

Patent

active

047964081

ABSTRACT:
A support tray 6a with a product 11a thereon is covered loosely by a cover sheet 8 in a first chamber portion 12 to be drawn upwardly into contact with the heated walls of a shallow first mould cavity. The combination of the product 11a, support tray 6a and cover sheet 8 is then advanced to a second chamber portion 13 defined by a deeper second mould cavity into which the cover sheet can be drawn while vacuum is applied to the interior of the ensuing pack through slits in the tray 6a, by means of suction ports 20.

REFERENCES:
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patent: 3524298 (1970-08-01), Hamilton
patent: 3545163 (1970-12-01), Mahaffy et al.
patent: 3659393 (1972-05-01), Richter
patent: 3694991 (1972-10-01), Perdue et al.
patent: 3835618 (1974-09-01), Perdue
patent: 4085565 (1978-04-01), Mahaffy et al.
patent: 4114348 (1978-09-01), Mahaffy et al.
patent: 4603541 (1986-08-01), Medwed
patent: 4676049 (1987-06-01), Wallter et al.

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