Package making – Skin packaging
Patent
1985-05-22
1985-12-31
Culver, Horace M.
Package making
Skin packaging
53389, 226117, B65B 4116, B65B 1150
Patent
active
045612366
ABSTRACT:
A method and apparatus is disclosed for packaging articles in two portions of film which are fed between outer and inner annular film clamping mechanisms with the outer clamping mechanism firmly clamping the film portions while stretching the film over the article. The inner annular clamping mechanism then clamps the periphery of the film portions together immediately inward of the seal area, and the outer clamps release the film allowing an annular hot knife to seal and sever the film portions in a relaxed area. A low inertia film drive system is also provided with the film supply rolls on one side of the clamping mechanisms being continuously driven while brush rolls on the other side of the clamping mechanisms are intermittently driven. The low inertia film drive system also includes components for assuring that the film is stressed longitudinally and transversely to remove wrinkles therefrom, and to assure that the film portions are sealed and severed in a completely relaxed area.
REFERENCES:
patent: 2438089 (1948-03-01), Carson
patent: 2486759 (1949-11-01), Pfeiffer
patent: 3274870 (1966-09-01), Schmermund
patent: 3429098 (1969-02-01), Treiber
patent: 3739547 (1973-06-01), Brevko et al.
patent: 4024692 (1977-05-01), Young et al.
patent: 4135344 (1979-01-01), Seragnoli
Culver Horace M.
FMC Corporation
Megley R. B.
Moore A. J.
Stanley H. M.
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