PT8616T

Refastenable adhesive fastening systems for disposable absorbent articles

Abstract

Disposable absorbent articles such as baby diapers or adult incontinent briefs provided with a refastenable adhesive fastening system. The adhesive fastening system preferably comprises a pair of tape tabs each having an adhesive surface which during use is adhered to a landing member having an adherence surface which may comprise only the backsheet that has no reinforcement for strength against tearing or may comprise a reinforced backsheet. The invention improves bond security while at the same time making the fastening system more easy to remove without tearing by careful optimization of the properties of the adhesive, the tape tab, and the landing member. In particular, it has been found that the adhesive fastening system should have a Standard Shear Hang Time of greater than about 1000 minutes per square inch. The surface characteristics, toughness, and elasticity modulus of the landing member is optimized while the adhesive aggressiveness (quick-stick) of the adhesive is optimized with preferred low coating weights of the adhesive and low calculated caliper for the landing member so as to provide an adhesive fastening system that bonds easily, holds securely and is refastenable.

Term

Term ended

Projected expiry passed 23 October 2007, 18.9 years ago.

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38 members in 25 offices

This recordMember, by publication datePriority claim15 more offices are in the list below

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Priority claims
DocumentOfficeKindDate
78270791United States of AmericaA

Members38

Family members, oldest first
DocumentOfficeKind
CA2119861A1CanadaA1
WO9307845A1World Intellectual Property Organization (WIPO)A1
AU2878192AAustraliaA
CN1074111AChinaA
MX9206121AMexicoA
PT8616TThis recordPortugalT
TW222579BTaiwan Province of ChinaB
FI941895AFinlandA
FI941895A0FinlandA0
FI941895A7FinlandA7
NO941474D0NorwayD0
NO941474LNorwayL
EP0609340A1European Patent Office (EPO)A1
BR9206671ABrazilA
JPH07500270AJapanA
US5399177AUnited States of AmericaA
NZ244878ANew ZealandA
PT101797APortugalA
EP0609340B1European Patent Office (EPO)B1
AT142471TAustriaT
ATE142471T1AustriaT1
AU672371B2AustraliaB2
DE69213752D1GermanyD1
PH29995APhilippinesA
MY108575AMalaysiaA
ES2091491T3SpainT3
GR3021121T3GreeceT3
TR28693ATürkiyeA
DE69213752T2GermanyT2
DK0609340T3DenmarkT3
CA2119861CCanadaC
PT101797BPortugalB
HK1006529AHong Kong, ChinaA
HK1006529A1Hong Kong, ChinaA1
SG71674A1SingaporeA1
KR100260286B1Republic of KoreaB1
CN1054277CChinaC
FI113451BFinlandB