Package making – Methods – Enclosing contents within progressively formed web means
Patent
1977-09-02
1979-01-09
McGehee, Travis S.
Package making
Methods
Enclosing contents within progressively formed web means
53548, B65B 912
Patent
active
041331621
ABSTRACT:
Process and means for preforming containers from a tube which is formed of a material which can be automatically welded by pressure and which contains a liquid. The means comprises half-moulds for preforming containers mounted in series on two endless chains on opposite sides of the tube and displaced towards one another for gripping and temporarily holding the tube therebetween, a pair of welding jaws acting above the half-moulds for gripping therebetween the walls of the tube and welding said walls to one another at the point of separation of the container and a means for separating the preformed containers. The means includes a second pair of welding jaws, disposed beneath the first pair and controlled in synchronism with the first pair, the second pair of jaws acting on a section of the tube welded at the top and bottom by the first pair of jaws, so as to provide an intermediate weld.
REFERENCES:
patent: 2530400 (1950-11-01), Rado
patent: 3300944 (1967-01-01), Thesing
patent: 3320718 (1967-05-01), Thesing et al.
patent: 3388525 (1968-06-01), Thesing
McGehee Travis S.
Papeteries de Belgique
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