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Method and device for heat seal

A technology for heat sealing and sealing, which is applied in the directions of packaging sealing/fastening, packaging, transportation packaging, etc., and can solve problems such as lack of sealing strength, deterioration of appearance quality, and expansion of the area of ​​the sealing part

Inactive Publication Date: 2004-08-04
ZUIKO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If such "displacement" occurs, the desired sealing strength will not be obtained, and the area of ​​the sealing part will be enlarged, and the appearance quality will also deteriorate

Method used

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  • Method and device for heat seal
  • Method and device for heat seal
  • Method and device for heat seal

Examples

Experimental program
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Effect test

Embodiment Construction

[0022] The embodiments of the present invention will be described in detail below in conjunction with the drawings.

[0023] Because the weak sheet material is prone to positional changes (crooked) in the production line, usually a little force is applied to the sheet to move it while pulling it, but when heat-sealed, the heated sheet will soften, so It will become longer near the sealing part due to the pulling force. In addition, due to the influence of the crystal arrangement, heat shrinkage caused by heat sealing also occurs. Therefore, even if a plurality of heat sealing devices composed of a pair of rotating drums and having sealing blades of the same shape are prepared, continuous passage of sheets will cause positional deviation and make it difficult to seal at the same place.

[0024] In the present invention, a structure is adopted in which one of the sealing roller and the opposed roller is provided in one, and the other rollers that are in contact with the opposite rol...

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PUM

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Abstract

The invention relates to a method and equipment for heat sealing a plurality of sheets passing through a space between a seal roller and an opposing roller which is opposingly provided to the seal roller. In this heat seal method, an identical seal part can be sealed several times by providing a plurality of seal rolls formed with a seal edge for one facing roll. This heat seal equipment is provided with a plurality of seal rolls (11-13) formed with a seal edge and one facing roll touching all of the seal rolls.

Description

Technical field [0001] The invention relates to a method and a device for continuously heat-sealing thermoplastic materials such as non-woven fabrics and plastics commonly used in the fields of medical and sanitary materials and packaging. Background technique [0002] In recent years, since a welded portion of a desired shape can be formed without an adhesive, the method of heat-sealing a thermoplastic (thermally fusible) material has become simple and convenient, and it has been widely used. In the heat sealing method, similar to the strip sealing method, the sliding cut sealing method, the belt sealing method, etc., one or both of the rollers rotating in opposite directions are heated to make at least one of them to be thermally fused A rotating drum method in which two or more strip-shaped sheets pass between these rolls to continuously heat-seal the sheets is known. Sometimes a heat-sealed blade is also provided in the rotating drum. In such a case, the sealing blade provide...

Claims

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Application Information

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IPC IPC(8): B65B51/10B29C65/18B29C65/78
CPCB29C66/40B29C66/83413B29C65/7841B29C66/91445B29C65/7894B29C65/18B29C66/82263B29C66/83415B29C66/8412B29C66/1122B29C66/45B29C66/81265Y10T156/1741
Inventor 橘育雄井上清文
Owner ZUIKO CORP