Fastener tape and packaging bag with fastener tape

Abstract

A fastener tape (1) has a band-like male member (11) on one side of the tape and a female band-like member (12) on the other side engaging with the male member (11). The male member (11) has a band-like base section (111) fusion bonded to a bag body (20), and the female member (12) has a band-like base section (121) fusion bonded also to the bag body (20). The band-like base section (121) has a portion extending beyond the width of the band-like base section (111), and this portion is defined as a seal base section (13). A separation layer (14) and a seal layer (15) are layered on the seal base section (13) on its surface (13B) on the engagement section (10) side, and the seal layer (15) is sealed to an opposite inner surface of the bag body (20) to form a seal section (16).

Description

technical field [0001] The present invention relates to an unsealable and resealable clamping band attached to a packaging bag and the like, and a packaging bag with the clamping band provided with the clamping band. Background technique [0002] As a packaging member for packaging various articles such as food, medicine, medical products, sundries, etc., it is known to arrange a pair of belt-shaped clamping belts that form the opening of the bag with a male part and a female part and that the male and female bite together. The packaging bag with a clamping belt can be opened and closed freely in the snapped state. [0003] In such a packaging bag with a clip tape, the tape portion of the clip tape becomes wider toward the content side, and an easy-peel layer is provided on a part of the wide portion. By sealing the clamp band to the facing film, the contents are prevented from adhering to the clamp head, and when taking out the contents, the easy-to-peel portion is peeled ...

AI Technical Summary

Problems solved by technology

[0008] However, in the easy-peelable layer disclosed in Patent Document 1, the structure is not clearly described, and depending on the combination of layer structures, peeling marks called whiskers remain on the peeling surface, and the peeling marks may be mixed into the contents.

[0009] In addition, in the structure described in Patent Document 2, airtightness is ensured, but the sealing portion of the partition wall is widened, and the size of the bag is restricted.

If the size of the partition wall is narrowed, the partition wall will be easily peeled off when the pressure acts on the inside and outside of the bag, so it is difficult to use under the conditions of use that must ensure airtightness.

Therefore, it is difficult to use as a packaging bag where internal pressure such as heat treatment or retort treatment acts

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