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US 2022/0355996 A1Published application
Bag-like container and bag-like container production method
AssigneeIdemitsu Unitech Co., Ltd.
InventorTakumi TODAKA
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Abstract
According to an aspect of the invention, provided is a bag-shaped container including a tubular film and at least one pair of engagement portions. The tubular film has an inner surface and an outer surface, and is folded in a manner that the outer surface configures both an inner surface of a bag body and an outer surface of the bag body. The at least one pair of engagement portions projects from the inner surface of the bag body, and engages with each other.
Claims15
A bag-shaped container comprising:
- a tubular film having an inner surface and an outer surface, the tubular film being folded in a manner that the outer surface configures both an inner surface of a bag body and an outer surface of the bag body;
- and
- at least one pair of engagement portions that projects from the inner surface of the bag body, the engagement portions engaging with each other.
A method of manufacturing a bag-shaped container, the bag-shaped container comprising:
- a tubular film having an inner surface and an outer surface, the tubular film being folded in a manner that the outer surface configures both an inner surface of a bag body and an outer surface of the bag body, and
- a zipper tape comprising:
- a pair of base strips bonded to the inner surface of the bag body;
- and engagement portions projecting from the respective pair of base strips, the method comprising:
- conveying the tubular film and the zipper tape continuously in a longitudinal direction to wind the tubular film and the zipper tape around a circumferential surface of a drum in a state in which the tubular film and the zipper tape are overlapped with each other;
- and
- heat-sealing the zipper tape to the tubular film by using a seal bar having a sealing surface, the sealing surface being opposed to the circumferential surface of the drum.
4 more elements
Dependencies are inferred from the claim text.