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Non-woven adhesive band for making diaper closing part

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

Inactive Publication Date: 2004-06-30
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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  • Non-woven adhesive band for making diaper closing part
  • Non-woven adhesive band for making diaper closing part
  • Non-woven adhesive band for making diaper closing part

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0148] 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).

[0149] 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 3% (weight) UV photopolymerization initiator (DAROCUR 1173, purchased from Ciba-Geigy of Basel, Switzerland) through a propeller mixer driven by a motor It was prepared by mixing the three compo...

Embodiment 2 and 3

[0156] Example 1 was repeated except that the amount of silicone in the release composition was reduced to 20% and 10%, respectively.

Embodiment 4

[0158] 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 fibers or of non-woven fibers of a thermoplastic polymer, said backing comprising on said fibrous layer a silicone release layer and the side of the backing opposite to the side comprising said silicone release layer comprises a pressure sensitive adhesive layer, said silicone release layer comprising a cured reaction product of a curable composition comprising (i) a polydialkylsiloxane having acrylate and / or methacrylate groups and (ii) an organic compound free of silicon and comprising at least two reactive groups selected from the group consisting of an acrylate and a methacrylate group, said adhesive tape having a 90 DEG peel adhesion of at least 6 N / 2.54 cm relative to a polyethylene film surface and said adhesive tape having a Keil test value of not more than 1 N / 2.54 cm. The adhesive tape is suitable for making cloth-like closure systems for absorbent articles such as diapers.

Description

[0001] This application is a divisional application with application number 99813430.9, filed on November 2, 1999, and entitled "Non-woven adhesive tape for making diaper closure system". field of invention [0002] 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 [0003] Disposable diapers generally comprise a thin stretched soft low density polyethylene backing film, an absorbent cor...

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
CPCC08F290/148C09J7/046C09J7/0296C09J2483/005C09D183/10C09J2400/263C09J2201/606C09J2453/00A61F13/581C09J7/201C09J7/29C09J7/21C09J2301/302C09D183/04A61F13/49C09J2423/046
Inventor E·A·冯亚库什D·荣格
Owner 3M INNOVATIVE PROPERTIES CO
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