# US 9,434,130 B2 · Elastic laminate sheet

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- Number: US 9,434,130 B2
- Document ID: US9434130B2
- Status: Granted
- Kind: B2
- Application number: 14/004,559
- Filed: 2012-03-06
- Published: 2014-02-13
- Granted: 2016-09-06
- Earliest claimed: 2011-03-11
- Assignees: 3M Innovative Properties Company
- Applicants: Kioshi Kunihiro; Shinji Kimura; Yoshihisa Matsuda; Naoyuki Toriumi
- Inventors: Kioshi Kunihiro; Shinji Kimura; Yoshihisa Matsuda; Naoyuki Toriumi
- Web page: https://patentgrep.com/patent/US9434130B2

## CPC

- B32B 5/022: {Non-woven fabric}
- B32B 5/142: {Variation across the area of the layer}
- B32B 7/14: applied in spaced arrangements, e.g. in stripes
- B32B 27/12: next to a fibrous or filamentary layer
- B32B 27/302: {comprising aromatic vinyl (co)polymers, e.g. styrenic (co)polymers}
- B32B 2250/40: Symmetrical or sandwich layers, e.g. ABA, ABCBA, ABCCBA
- B32B 2262/0253: Polyolefin fibres
- B32B 2262/0276: Polyester fibres
- B32B 2262/12: Conjugate fibres, e.g. core/sheath or side-by-side
- B32B 2262/14: Mixture of at least two fibres made of different materials
- B32B 2307/51: Elastic
- B32B 2307/54: Yield strength; Tensile strength
- B32B 2307/5825: Tear resistant
- B32B 2307/718: Weight, e.g. weight per square meter
- B32B 2535/00: Medical equipment, e.g. bandage, prostheses or catheter
- B32B 2555/02: Diapers or napkins
- Y10T 442/659: Including an additional nonwoven fabric
- Y10T 442/679: Natural or synthetic rubber sheet or film
- B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

An elastic laminate sheet with excellent elasticity while maintaining softness and favorable appearance including surface feel and the like, an article containing this elastic laminate sheet, a laminate sheet where a high elasticity laminate portion is the elastic laminate sheet, and an article containing the laminate sheet.

## Claims

### Claim 1

An elastic laminate sheet comprising a laminate body having an elastomer film and a nonwoven material,
wherein a 50% return load of the elastomer film after elongating 100% two times is 0.8 N/25 mm or higher; and
the elastomer film and the nonwoven material are laminated together in the absence of pressure and are uniformly bonded with a bonding strength of 4 N/25 mm or less.

### Claim 2 (depends on 1)

The elastic laminate sheet according to claim 1, wherein nonwoven material is provided on both sides of the elastomer film.

### Claim 3 (depends on 1)

The elastic laminate sheet according to claim 1, wherein a basis weight of the elastomer film is 60 g/m2 or less.

### Claim 4

A laminate sheet comprising a laminate body having an elastomer film and a nonwoven material provided on at least one surface of the elastomer film,
wherein the laminate sheet contains a low elasticity laminate portion and a high elasticity laminate portion;
and in the high elasticity laminate portion,
a 50% return load of the elastomer film after elongating 100% two times is 0.8 N/25 mm or higher, and the elastomer film and the nonwoven material are laminated together in the absence of pressure and are uniformly bonded with a bonding strength of 4 N/25 mm or less.

### Claim 5 (depends on 4)

The laminate sheet according to claim 4, wherein nonwoven material is provided on both sides of the elastomer film.

### Claim 6 (depends on 4)

The laminate sheet according to claim 4, wherein a basis weight of the elastomer film is 60 g/m2 or less.

### Claim 7 (depends on 1)

An article comprising the elastic laminate sheet according to claim 1.

### Claim 8 (depends on 4)

An article comprising the laminate sheet according to claim 4.