Title:
HEAT SEALER
Document Type and Number:
Japanese Patent JP3411600
Kind Code:
B2
Abstract:
PURPOSE: To equalize sufficiently also heat-sealing strength of respective lateral sealing parts leaving a space between them by making the lateral sealing part of a bag have almost uniform heat-sealing strength over its whole length.
CONSTITUTION: Fixing side and movable side roll body parts 1, 5 wherein two rolls make a pair and are driven by rotation in a revers direction with each other, and heat-sealing edges 10, 11 which are provided to such respective roll body parts 1, 5, extended in their length directions or peripheral directions, and have a peripheral arc state surface, are provided in a heat sealer. A forcing means 14 which energizes the movable side roll body part 5 toward the fixing side roll body part 1 always by specific force, and besides an elastic means 15 which pushes the movable side roll body part 5 back in a direction separating from the fixing side roll body part 1 are arranged. The pushing back force of the elastic means 15 is reduced within a range of 2-8kgf per 10μm according to increase in a nip from a balance posture between the pushing back force and the energizing force of the forcing means 14.
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Inventors:
Katsunori Futase
Application Number:
JP31040692A
Publication Date:
June 03, 2003
Filing Date:
November 19, 1992
Export Citation:
Assignee:
Taisei Lamic Co., Ltd.
International Classes:
B29C65/20; B65B51/10; B29L22/00; (IPC1-7): B29C65/20; B65B51/10
Domestic Patent References:
| JP5969102U | ||||
| JP6013763Y2 |
Attorney, Agent or Firm:
Junzo Ogawa (1 person outside)