Title:
【発明の名称】筒状プラスチックフィルム製袋の開口部拡開方法およびその装置
Document Type and Number:
Japanese Patent JP3073569
Kind Code:
B2
Abstract:
PURPOSE:To automatically expand the opening part of a bag made of a cylindrical plastic film by applying bifurcated pawl parts to both opposed film parts of the bag in the vicinity of the opening part thereof in an alternately crossing state and mutually closing them to grasp the films of the bag between the pawl parts and peeling both film parts to expand the opening part. CONSTITUTION:The pawl parts 7A, 7A, 7B, 7B of bifurcated pawls 4A, 4B are applied to both opposed film parts of a bag made of a flattened cylindrical plastic film opened at its one end and closed at its other end in the vicinity of the opening part thereof in an alternately crossing state. By mutually closing the pawl parts 7A, 7A, 7B, 7B, the film parts are grasped between the pawl parts and peeled to expand the opening part. As a result, the opening part of the bag made of the cylindrical film can be automatically expanded.
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Inventors:
Saito Shun
Yano Masamitsu
Satoshi Takane
Yano Masamitsu
Satoshi Takane
Application Number:
JP27577691A
Publication Date:
August 07, 2000
Filing Date:
October 23, 1991
Export Citation:
Assignee:
Kewpie Corporation
International Classes:
B31B19/84; B31B50/76; (IPC1-7): B31B1/76
Domestic Patent References:
| JP50146487A | ||||
| JP58112721A | ||||
| JP38108U |
Attorney, Agent or Firm:
Kazuo Sato (3 others)