Package making – Progressively seamed cover web or web folds – With closing of web between package units
Patent
1987-01-07
1987-12-29
Culver, Horace M.
Package making
Progressively seamed cover web or web folds
With closing of web between package units
53372, 53373, B65B 906, B65B 5114, B65B 5116, B65B 5126
Patent
active
047151668
ABSTRACT:
A film packaging apparatus comprising a tube former for forming a continuous length of a heat-meltable, heat-shrinkable film into a tube of such film with its longitudinal margins overlapping each other and extending downward through a bottom longitudinal outlet of the former, a longitudinal sealer disposed below the former for longitudinally heat-sealing and cutting the overlapping film margins, a transverse sealer disposed behind the former for transversely heat-sealing and cutting the film tube, wherein the longitudinal sealer comprises a cutter disc having a rounded circumferential edge and a counter disc having a flat circumferential surface in contact with the rounded edge at a position slightly deviating toward the cutter disc from a center line of the longitudinal outlet, and a longitudinal guide plate disposed immediately under the position of contact between the two discs.
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Culver Horace M.
Tokiwa Kogyo Co., Ltd.
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