Manufacturing container or tube from paper; or other manufacturi – Container making – Rigid container
Patent
1983-10-19
1985-11-05
Gilden, Leon
Manufacturing container or tube from paper; or other manufacturi
Container making
Rigid container
53174, 493110, B31B 190
Patent
active
045511233
ABSTRACT:
A container comprises a paper base member covered all around by a heat-shrinkable plastic film. Air is removed from a space formed by the film in which the paper base member is disposed to bring the film against the base member, and at least a part of the film is sealed for closing the space. The base member is either originally formed into the shape of the container, or later formed into the shape of the container to define at least one open end. The open end is covered by a metal lid. A method of making the container includes covering the base member with heat-shrinkable plastic film forming a double wall with the base member in a space between the double wall, removing air from the space between the double wall and sealing the space. Heat applied to the container, for example for sterilizing contents of the container, also shrinks the plastic film to produce a wrinkle-free fit between the film and the paper base member.
REFERENCES:
patent: 2286342 (1942-06-01), Calva
patent: 3383025 (1968-05-01), Ferrey et al.
patent: 4047473 (1977-09-01), Fletcher
patent: 4194440 (1980-03-01), Gorey
patent: 4258528 (1981-03-01), Focke
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