| 摘要 |
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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