Method of and apparatus for producing a package

Details Method of and apparatus for producing a package Method of and apparatus for producing a package

1984-05-14

1986-02-04

Culver, Horace M.

Package making

Methods

With contents treating

53442, 53453, 53511, 53557, 53559, B65B 5306, B65B 4710

Patent

active

045677131

ABSTRACT:
A method of producing a package is provided wherein a product is brought into a depression formed using a shrinkable sheet material, a cover is brought over the depression, the sheet material is shrunk by heating and the depression is closed with a cover by heat-sealing. In order to shrink the depression free from creases onto different and irregular product surfaces steam is admitted to the sheet material having a saturation temperature above the sheet material temperature such that the steam condensing at the sheet material transfers its heat of condensation to the sheet material. The apparatus for performing the method comprises a sealing station with an upper tool and a lower tool movable relatively thereto and having a chamber for receiving the depression, the chamber being connected with a steam generator.

REFERENCES:
patent: 3321886 (1967-05-01), Griffith et al.
patent: 3956867 (1976-05-01), Utz et al.
patent: 4137688 (1979-02-01), Utz et al.

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