Perforation forming device

Abstract

A perforation forming device for forming perforations along which a package can be easily broken and enabling the package to be manufactured at reduced cost. A device (20) comprises a casing (30) and drive mechanisms (40). A top plate (50) connected to the drive mechanisms (40) is disposed under an upper section (31) of the casing (30) with respect to the vertical direction (Y). A blade holding plate (60) for holding a perforating blade (70) is mounted to the lower part of the top plate (50). A pressing plate (80) having a support section (81) and a rubber section (82) is disposed under the blade holding plate (60). The blade holding plate (60) is positioned between the pressing plate (80) and the top plate (50). A small pressing gap (87) penetrates through the pressing plate (80) in the thickness direction thereof. A loading plate (100) is disposed under the pressing plate (80), and the loading plate (100) has a small loading gap (105) penetrating therethrough in the thickness direction thereof and allows a film sheet (14) to be placed thereon. A base plate (110) is disposed under the loading plate (100) and is affixed to the lower section (32) of the casing.

Description

technical field [0001] The present invention relates to a perforation forming device, and more specifically, to a perforation forming device for forming a perforation for opening the package when the diapers are taken out, in a package packaging a plurality of sanitary products such as disposable diapers. Background technique [0002] Conventionally, JP-A-2006-290383 (Patent Document 1) is known as a package that accommodates a plurality of disposable diapers in parallel, for example. In this patent document 1, a soft material such as polyethylene film is used to form a packaging body, and a plurality of compressed disposable diapers are accommodated in the packaging body, and perforations are formed on the packaging body, and can be torn from along the perforations. Remove the diaper from the packaging body. [0003] Patent Document 1: Japanese Patent Laid-Open No. 2006-290383 [0004] The perforation of the packaging body is formed by pressing the tooth edge toward the e...

AI Technical Summary

Problems solved by technology

[0005] However, when the blade is pressed against the elastic plate as described above, the film is also drawn in and bit into the side of the elastic plate, making it difficult for the blade to penetrate the film.

When it is difficult for the tooth edge to penetrate the film, the length of the slit formed by the tooth edge is shortened, or there is a problem that it is difficult to tear the package because the tooth hole is not formed.

[0006] In addition, each time a tooth hole is formed, the tooth edge sticks to the elastic plate, so there are problems in that the tooth edge is damaged, the frequency of its replacement is high, and the manufacturing cost is increased.

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