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 buck

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
Comparison scheme
Effect test

Example

[0043] [First Embodiment]

[0044] The first embodiment of the present invention proposes improvements based on the aforementioned existing products. See Figure 4 , Schematically shows the buckle strip 20 of the present invention, which has the following characteristics: a substantially continuous thermoplastic material backing 17 and an array of mushroom heads 14 integral with the backing, each mushroom head 14 It has a stem 16 (a plurality of protrusion structures). The thermoplastic material backing 17 and the mushroom head 14 integrated with the backing together constitute the first film material. 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 the attached Figure 4 , It 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 thickn...

Example

[0056] [Second Embodiment]

[0057] The buckle strap 20 provided by the second embodiment has the same structure as that of the first embodiment, so the same reference numerals are used. The difference is that the second embodiment provides a preferred combination of materials and an improvement to 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, the thermoplastic backing 17 is generally not soft enough. Attempts have been made to improve the composition of the material itself. For example, blending polypropylene and polyethylene is expected to provide suitable softness. However, this solution will reduce the rigidity of the product as a whole, thereby deteriorating the locking function of the buckle strip 10. Similarly, simply reducing the thickness of the base l...

Example

[0063] [Third Embodiment]

[0064] On the basis of the second embodiment, a further preferred solution is provided. In the third embodiment, a separately designed special reinforced film 18 is used, which is a biaxially oriented polypropylene film (BOPP). See image 3 , Which schematically shows that the polypropylene film is stretched in the length direction and the width direction to make the polymer molecular chain directional. The biaxially oriented polypropylene film is softer than the conventional base film of the fastener tape and has higher mechanical strength.

[0065] The third embodiment provides further advantages. The body of the first membrane can be made thinner, the second membrane has good flexibility and mechanical properties, and the sum of the thickness of the first membrane and the second membrane is substantially The thickness of the backing 12 of the buckle strip 10 in the prior art is not exceeded, but the flexibility and tear resistance can be significant...

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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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