| 摘要 |
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. |
