Title:
FILM WELDING/FUSION-CUTTING APPARATUS FOR MAKING EASY-TO-UNSEAL HEAT-SHRINKABLE PACKAGE
Document Type and Number:
Japanese Patent JP3628499
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To obtain an inexpensive heat-shrinkable packaging method to easily and reliably unseal a package by using a heating member of such a form that a protrusion for forming an unsealing protruding piece is formed together at the time of heat-welding/fusion-cutting a rim of a film.
SOLUTION: An object 106 to be packaged is inserted into an opening of a two-fold film 110 and sent to a welding/fusion-cutting apparatus 100. An upper member 101 is lowered to interpose a rim or the film between the upper member 101 and a lower member 102, and the rim of the film 110 is heat-welded/fusion-cut by a heating member 103. The heating member 103 has such a shape that a protrusion 104 forming an easy-to-unseal protruding piece is formed at the rim of the film 110. When the object is sent to a heat-shrinking device for heat-shrinking the film 110, the protrusion 104 remains as it is on a fusion- cut rim, forming the easy-to-unseal protruding piece 104. At the time of unsealing a package, the protruding piece 104 is pulled, whereby the fusion-cut part is torn and the package can be easily unsealed.
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Inventors:
Noguchi Mitsugu
Application Number:
JP29231197A
Publication Date:
March 09, 2005
Filing Date:
October 24, 1997
Export Citation:
Assignee:
W R GRACE & CO-CONN
International Classes:
B65B53/00; B65B53/02; B65B61/06; B65B61/18; B65D71/08; B65D75/00; B65D75/58; (IPC1-7): B65B53/00; B65B53/02
Domestic Patent References:
| JP9165014A | ||||
| JP7242266A |
Foreign References:
| US3641732 |
Attorney, Agent or Firm:
Kazuo Shamoto
Shosuke Imai
Tadashi Masui
Tadahiko Kurita
Yasushi Kobayashi
Shinya Hosokawa
Shosuke Imai
Tadashi Masui
Tadahiko Kurita
Yasushi Kobayashi
Shinya Hosokawa