Packaging bags

Abstract

This product is a packaging bag in which the base tape of a zipper inserted into the bag is heat-sealed to the inner surface of the film of the bag. When the base tape is heat-sealed to the inner surface of the film of the bag (both the front and back sides), as shown in [Enlarged front view of part BB] and [Reference enlarged cross-sectional view of part CC showing the sealed part], a band-like sealed part with a wavy press tendency and an unsealed part are alternately formed, and when tearing is started from a tearing means such as an I-notch provided at the side edge of the bag, the tear progresses within the unsealed part, making it easy to open.

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