Nonwoven adhesive tape for producing diaper closure system

A technology for adhesive tapes and non-woven fibers, which is applied in the fields of polysiloxane peeling coatings, pre-laminated composite tapes, and absorbent products, can solve problems such as complex manufacturing processes, and achieve the effect of easy unwinding

Inactive Publication Date: 2001-12-12
3M INNOVATIVE PROPERTIES CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in-line lamination complicates the manufacturing process of the desired article and sometimes causes problems for the fabricator

Method used

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  • Nonwoven adhesive tape for producing diaper closure system
  • Nonwoven adhesive tape for producing diaper closure system
  • Nonwoven adhesive tape for producing diaper closure system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0147] 50 g / m with a heat-bonded pattern of diamond-shaped dots with a width of about 6 mm 2 A spunbonded polypropylene nonwoven web (fiber thickness approximately 20 microns, available as DALTEX 1050 from Don & Low, Angus, Scotland) was first heat embossed to form the backing. The total embossed area is 19%. Next, the embossed nonwoven web is heat laminated to a 30 g / m polyolefin blend 2 (75% polypropylene available as PPC5660 from FINA and 25% linear low density polyethylene (LDPE) available as LE7520 from Borealis, Lyngby, Denmark).

[0148] 30% by weight of UV-curable silicone (available as TEGO RC-715 from Th. Goldschmidt AG of Essen, Germany), 70% by weight of di(trimethylol)propane tetraacrylate (DMPTA, Mw= 438, viscosity=1100mPa·s, purchased from UCB Chemicals as E140) and the mixture of 3% (weight) ultraviolet photopolymerization initiator (DAROCUR1173, purchased from Ciba-Geigy of Basel, Switzerland) through a propeller mixer driven by a motor It was prepared by m...

Embodiment 2 and 3

[0155] Example 1 was repeated except that the amount of silicone in the release composition was reduced to 20% and 10%, respectively.

Embodiment 4

[0157] Example 1 was repeated except that RC-902 (functionality = 14, viscosity about 350 mPa·s) was used instead of RC715.

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Abstract

The present invention provides an adhesive tape comprising a backing comprising a fibrous layer of woven or nonwoven fibers of a thermoplastic polymer, said backing comprising a silicone release layer on said fibrous layer, and comprising The opposite backing side of the silicone release layer comprises a pressure sensitive adhesive layer, the silicone release layer comprising a cured reaction product of a curable composition comprising (i) having Polydialkylsiloxanes of acrylate and/or methacrylate groups, and (ii) silicone-free but containing at least two reactive groups selected from acrylate and methacrylate groups. Compounds, the adhesive tape has a 90° peel adhesion of at least 6 N/2.54 cm to a polyethylene film surface and a Keil test value of no higher than 1 N/2.54 cm. The adhesive tape is suitable for making fabric-like closure systems for absorbent articles such as diapers.

Description

field of invention [0001] The present invention relates to an adhesive tape having a backing comprising a fibrous layer of woven or nonwoven fibers of a thermoplastic polymer and capable of being used in the manufacture of absorbent articles such as diapers to provide mechanical closure tabs for the absorbent article. In particular, the present invention relates to silicone release coatings which can be provided on a backing fibrous layer to provide easy unwinding of adhesive tapes in roll form. The present invention also relates to prelaminated composite tapes and absorbent articles comprising the adhesive tapes of the present invention. background of the invention [0002] Disposable diapers generally comprise a thin stretched soft low density polyethylene backing film, an absorbent core on the inside of the backing film, a porous topsheet covering the core. The diaper is fastened to the crotch of the wearer, and the ends of the diaper protrude forward and rearward, respe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F13/49A61F5/44A61F13/58C08F290/14C09D183/10C09J7/29C09J201/00C09K3/00
CPCA61F13/581C08F290/148C09D183/10C09J2400/263C09J2453/00C09J2483/005C09J7/201C09J7/29C09J7/21C09J2301/302C09D183/04A61F13/49C09J2423/046
Inventor E·A·冯亚库什D·荣格
Owner 3M INNOVATIVE PROPERTIES CO
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