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Buckle strip and manufacturing method thereof

A manufacturing method and strip technology, which is applied in the field of binding tape, diaper closure system, and diapers, can solve the problems that buckle strips are prone to tearing and breaking, achieve simple equipment layout, improve production operability, and improve tear resistance cracking effect

Inactive Publication Date: 2019-04-09
3M INNOVATIVE PROPERTIES CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This solution can cause the buckle strip to tear and break easily

Method used

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  • Buckle strip and manufacturing method thereof
  • Buckle strip and manufacturing method thereof
  • Buckle strip and manufacturing method thereof

Examples

Experimental program
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Effect test

no. 1 approach

[0044] The first embodiment of the present invention proposes improvements based on the above-mentioned existing products. See Figure 4 , schematically illustrates a fastener strip 20 of the present invention, which is characterized by having a substantially continuous backing 17 of thermoplastic material, and an array of mushroom heads 14 integral with the backing, each mushroom head 14 There is a stem 16 (multiple protrusion configuration). The thermoplastic material backing 17 and the mushroom head 14 integral with the backing together constitute the first membrane. Furthermore, a reinforcement film 18 (second film material) is laminated on the back surface of the thermoplastic resin backing 17 .

[0045] In addition, please see attached Figure 4 , shows that the thickness of the thermoplastic resin backing 17 is relatively thin. The backing 17 has a thickness T2 and the reinforcement film 18 has a thickness T3. The sum of the thickness T2 and the thickness T3 prefer...

no. 2 approach

[0057] The buckle strip 20 provided by the second embodiment has the same configuration as that of the first embodiment, and therefore the same reference numerals are used. The difference is that the second embodiment provides a preferred combination of materials and an improvement on the reinforcement film 18 (second film material).

[0058] In the conventional technology, the buckle strip 10 made of polypropylene alone, and the array of mushroom heads 14 can provide better strength and realize a proper buckle interlocking closure system. However, thermoplastic backings 17 are generally not flexible enough. Attempts have been made to improve the composition of the material itself. For example, blending polypropylene with polyethylene is expected to provide suitable softness, however, this solution will reduce the rigidity of the product as a whole, thereby degrading the locking function of the buckle strip 10 . Likewise, simply reducing the thickness of the base layer of th...

no. 3 approach

[0064] On the basis of the second embodiment, a further preferred solution is provided. The third embodiment employs a specially designed reinforcement film 18 which is a biaxially oriented polypropylene film (BOPP). see image 3 , which schematically shows that the polypropylene film has been stretched in the length direction and width direction, so that the polymer molecular chain has directionality. Biaxially oriented polypropylene film is softer and mechanically stronger than conventional base films for fastener tapes.

[0065] The third embodiment provides further advantages, the body of the first film material can be made thinner, the second film material has good flexibility and mechanical properties, and the sum of the thicknesses of the first film material and the second film material is substantially The thickness of the backing 12 of the prior art buckle strip 10 is not exceeded, but the softness and tear resistance can be significantly improved while maintaining ...

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Abstract

The invention discloses a buckle strip for attaching to a matched strip to provide a fastening function. The buckle strip comprises: a first film material which comprises a base layer comprising a first surface and a second surface opposite to the first surface, and a plurality of protrusion structures extending from the first surface of the base layer and integrally formed with the base layer, wherein the buckle strip further comprises a second film material; the second film material is laminated and fixed on the second surface of the first film material; and the second film material is a separately formed film material. The invention also discloses a buckle strip closure system, a paper diaper and a preparation method of the buckle strip.

Description

technical field [0001] The present invention generally relates to the field of strapping machinery, in particular to buckle strips, especially a solution to provide reinforcement for the preparation of buckle strips made of soft materials, and a diaper closure system, a diaper, or Ties. Background technique [0002] Buckle-type fastening devices are known, including buckle straps. Such devices are also known as adhesive fasteners, Velcro, or hook and loop fasteners. [0003] [Related Technology] [0004] Related Art 1, U.S. Patent Application Publication No. US2004068848A1, entitled "Heat treated profileextruded hook", discloses a method of forming integral polymeric protrusions or fasteners comprising a thin but strong flexible backing, and a plurality of fine spaced apart hooks protruding from the upper surface of the unitary backing, the method generally comprising extruding a thermoplastic resin through a template, forming a base layer and spaced apart ridges, ribs or...

Claims

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Application Information

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IPC IPC(8): A61F13/64
CPCA61F13/64A61F13/625
Inventor 凌妙如芦卓
Owner 3M INNOVATIVE PROPERTIES CO
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