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Hot melt adhesive with high peel and shear strengths for nonwoven applications

A hot-melt adhesive and anti-shear technology, applied in the direction of adhesives, etc., can solve the problems of limited production speed and expensive equipment, and achieve good structural adhesion, good resistance to peeling and shearing force

Inactive Publication Date: 2000-05-24
ATO FINDLEY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the equipment used in these applications is often expensive, requires frequent maintenance, and limits production rates

Method used

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  • Hot melt adhesive with high peel and shear strengths for nonwoven applications

Examples

Experimental program
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Effect test

Embodiment 1

[0102] The following adhesive mixtures were prepared according to the invention. When tested, the adhesive performed very well at elevated temperatures providing adequate peel and shear bond strength. Due to the use of polybutene homopolymer, high softening point amorphous polyalphaolefin and high softening point tackifier, the samples of this embodiment have good high temperature strength. Weight % Component Commercial Source Common Generic Name 29.9 Eas totac H-130R Eastman Chemical Company Resin 19.9 Polybutene DP 0800 Shell Chemical Company Polybutene 39.8 Rextac 2115 Rexene Products Polyolefin 9.5 Epolene N15 Eastman Chemical Company Wax 0.9 Irganox 1010-FF Ciba Additives Stabilizer Example 2

Embodiment 2

[0103] This example formulation of the invention contains no wax. This example used a high softening point tackifier and an amorphous polyalphaolefin, as well as a blend of polybutene homopolymer and polybutene-ethylene copolymer. No wax is used in this formulation, thus increasing the viscosity, but giving the formulation more toughness and a longer open time than Example 1. Weight % Component Commercial Source Common Generic Name 30 Eastotac H-130R Eastman Chemical Company Resin 20 Polybutene DP 0800 Shell Chemical Company Polybutene 29 Rextac 2115 Rexene Products Polyolefin 20 Polybutene DP 8910 Shell Chemical Company Polybutene 1 Irganox 1010-FF Ciba Additives Stabilizer Example 3

Embodiment 3

[0104] In the formulation of this example of the invention, polybutene plasticizer was used instead of amorphous polyalphaolefin. Also, it uses polybutene-ethylene copolymer. Weight % Component Commercial Source Generic Name 15 Eastotac H-100W Eastman Chemical Company Resin 50 Polybutene DP 8910 Shell Chemical Company Polybutene

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Abstract

A polybutylene based hot melt adhesive composition having a variety of end uses, particularly in construction and elastic attachment applications for nonwoven articles such as disposable diapers. Unlike typical hot melt adhesives, the present composition can withstand high peel and shear loads at elevated temperatures for extended periods of time without experiencing catastrophic bond failure. The composition includes polybutylene polymer or a mixture of polybutylene and polyolefin polymers, and a stabilizer, with the remaining ingredients chosen from one or more of a polyolefin polymer, a tackifier resin, a plasticizer, or a wax. The hot melt adhesive composition can be applied using common application techniques such as extruding or spraying.

Description

Background of the invention [0001] The present invention relates to hot melt adhesive compositions, and more particularly, the present invention relates to polybutylene-based hot melt adhesives for use in nonwoven disposable absorbent articles such as diapers. [0002] Many types of disposable absorbent articles are commercially available which are used to absorb and retain bodily exudates, such as urine and excreta. Typical examples of such articles are disposable diapers for babies and undergarments for adults who cannot make their own. Typically, hot melt adhesives are used in the construction of such disposable articles. [0003] Although many hot melt adhesive compositions are known and used in the construction of disposable articles, a hot melt adhesive used for bonding in one particular application may be completely unsuitable for another application , which is also known. Accordingly, a variety of hot melt adhesive compositions are used in the construction of dispos...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/02C08L57/02C08L91/06C09J123/04C09J123/10C09J123/16C09J123/20
CPCC08L57/02C09J123/20C08L91/06C08L23/02C08L2666/02
Inventor 玛格丽特·M·弗拉利奇马克·阿尔珀
Owner ATO FINDLEY
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