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1. WO2020109925 - FASTENER STRIP AND MANUFACTURING METHOD THEREOF

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[ EN ]

CLAIMS

1. A fastener strip for attachment to a mating strip, the fastener strip comprising:

a first film material, wherein the first film material comprises: a substrate layer, the substrate layer comprising a first surface and a second surface, the second surface being opposite to the first surface; and a plurality of protruding constructions extending from the first surface of the substrate layer and integrally formed with the substrate layer, and

a second film material, wherein 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.

2. The fastener strip of Claim 1, wherein both the first film material and the second film material are made of a thermoplastic polymeric material.

3. The fastener strip of Claim 1 or 2, wherein the thermoplastic polymeric material is polypropylene, or a mixture of polypropylene and polyethylene.

4. The fastener strip of any one of Claims 1 to 3, wherein the first film material and the second film material are formed from the same material.

5. The fastener strip of Claim 4, wherein both the first film material and the second film material are made of polypropylene.

6. The fastener strip of any one of Claims 1 to 5, wherein the second film material is a BOPP film, namely, a biaxially-oriented polypropylene film.

7. The fastener strip of Claim 1 or 2, wherein the second film material is a fiber-reinforced plastic film.

8. The fastener strip of Claim 1 or 2, wherein the first film material and the second film material are bonded with heat pressing and/or an adhesive.

9. The fastener strip of any one of Claims 1 to 8, wherein the second film material has one of a bump pattern, a printed pattern, and a color design, or a combination thereof formed thereon in advance.

10. The fastener strip of any one of Claims 1 to 8, wherein the fastener strip has an easy-to-tear construction.

11. The fastener strip of any one of Claims 1 to 8, wherein the easy-to-tear construction is selected from the following: at least one virtual cut point; a plurality of through-holes generally distributed in a straight line in a width direction of the fastener strip; a notch arranged on an edge of the strip; or a combination thereof.

12. A closure system of a disposable diaper, comprising the fastener strip of any one of the preceding claims.

13. A disposable diaper, comprising the fastener strip of any one of the preceding Claims 1 to 11.

14. A method of manufacturing a fastener strip, comprising the steps:

transferring a second film material to a press roller,

applying a first thermoplastic material above the second film material and a cylindrical mold roller through an extruder, then the first thermoplastic material and the second film material together passing through a pressing area between the press roller and the cylindrical mold roller to form a first intermediate composite film material comprising the first film material formed from the first thermoplastic material; and forming protrusions complementary with a surface configuration of the cylindrical mold roller on a first surface of the first film material.

15. The method of manufacturing the fastener strip of Claim 14, further comprising a further configuring processing on the protrusions to form a mushroom head construction.

16. The method of manufacturing the fastener strip of Claim 14 or 15, further comprising arranging an easy-to-tear construction.