STRETCHABLE LAMINATED SHEET

• US 20090238849A1
• Filed: 03/10/2009
• Published: 09/24/2009
• Est. Priority Date: 03/19/2008
• Status: Abandoned Application

• Current Assignee: Jnc Fibers Corporation (Chisso Corporation)
• Original Assignee: Chisso Corporation, Chisso Polypro Fiber Company Limited (Chisso Corporation)
• Inventors: Iwata, Junji, Matsuda, Yasushi
• Application Number:
  US12/401,292
• Publication Number:
  US 20090238849A1
• Time in Patent Office: Days
• US Class Current: 424/401
• CPC Class Codes: A45D 44/002 Masks for cosmetic treatment of the face
• CPC Class Codes: A61K 8/0208 Tissues; Wipes; Patches
• CPC Class Codes: A61M 2210/0606 Face
• CPC Class Codes: A61Q 19/00 Preparations for care of the skin
• CPC Class Codes: B32B 2262/0253 Polyolefin fibres
• CPC Class Codes: B32B 2262/0261 Polyamide fibres
• CPC Class Codes: B32B 2262/0276 Polyester fibres
• CPC Class Codes: B32B 2262/04 Cellulosic plastic fibres, e.g. rayon
• CPC Class Codes: B32B 2262/062 Cellulose fibres, e.g. cotton
• CPC Class Codes: B32B 2262/065 Lignocellulosic fibres, e.g. jute, sisal, hemp, flax, bamboo
• CPC Class Codes: B32B 2262/08 Animal fibres, e.g. hair, wool, silk
• CPC Class Codes: B32B 2262/14 Mixture of at least two fibres made of different materials
• CPC Class Codes: B32B 2307/50 having particular mechanical properties
• CPC Class Codes: B32B 2307/726 Permeability to liquids, absorption
• CPC Class Codes: B32B 2307/728 Hydrophilic
• CPC Class Codes: B32B 2555/00 Personal care
• CPC Class Codes: B32B 5/022 Non-woven fabric
• CPC Class Codes: B32B 5/04 characterised by a layer being specifically extensible by reason of its structure or arrangement , e.g. by reason of the chemical nature of the fibres or filaments
• CPC Class Codes: B32B 5/06 characterised by a fibrous or filamentary layer mechanically connected, e.g. by needling to another layer, e.g. of fibres, of paper
• CPC Class Codes: B32B 5/26 another layer next to it also being fibrous or filamentary relative arrangement of fibres or filaments of different layers B32B5/12
• CPC Class Codes: D04H 1/4374 : using different kinds of webs, e.g. by layering webs
• CPC Class Codes: D04H 1/559 : the fibres being within layered webs
• CPC Class Codes: Y10T 428/24331 : including nonapertured component

Abstract

A stretchable laminated sheet with hydrophilic properties, which particularly has an excellent feeling and stability in wearing and is capable of efficiently enhancing the effect and efficacy brought about by a liquid component on a skin or other object, when the stretchable laminated sheet is impregnated with the liquid component and wet and then used on the skin or other object. A stretchable laminated sheet, which is obtained by partially thermocompression-bonding and laminating a hydrophilic short fiber layer extensible in at least one direction and an microfiber layer having a elastomer long fiber of a fiber diameter of 15 μm or less at 50% or more by weight, wherein discontinuous and regular concave and convex parts caused by the partial thermocompression bonding are formed on a surface of the hydrophilic short fiber layer that is exposed on one surface of the stretchable laminated sheet, the total area of the concave parts is in a range of 3 to 40% of the area of the surface of the hydrophilic short fiber layer, and at least the elastomer long fiber of the microfiber layer is softened and consequently joined to a fiber constituting the hydrophilic short fiber layer in a sheet thickness direction of a section where the concave parts exist, whereby the hydrophilic short fiber layer and the microfiber layer are integrated with each other.

Claims

1. A stretchable laminated sheet, which is obtained by partially thermocompression-bonding to laminate a hydrophilic short fiber layer extensible in at least one direction and a microfiber layer having an elastomer long fiber of a fiber diameter of 15 μ

m or less at 50% or more by weight based on the microfiber layer, wherein discontinuous and regular concave and convex parts caused by the partial thermocompression bonding are formed on a surface of the hydrophilic short fiber layer that is exposed on one surface of the stretchable laminated sheet, the total area of the concave parts is in a range of 3 to 40% of the area of the surface of the hydrophilic short fiber layer, and at least the elastomer long fiber of the microfiber layer is softened and consequently joined to a fiber constituting the hydrophilic short fiber layer in a sheet thickness direction of a section where the concave parts exist, whereby the hydrophilic short fiber layer and the microfiber layer are integrated with each other.

2. The stretchable laminated sheet according to claim 1, wherein a surface of the microfiber layer that is exposed on the other surface of the stretchable laminated sheet is smooth.

3. The stretchable laminated sheet according to claim 1, wherein when 100 parts by weight of the stretchable laminated sheet is impregnated with 100 to 1500 parts by weight of a liquid component an elongation recovery ratio is in a range of 30 to 100% after the stretchable laminated sheet is extended by 30% in the at least one direction.

4. The stretchable laminated sheet according to claim 1, wherein the hydrophilic short fiber layer has at least 30% by weight of a short fiber comprising cotton, rayon, cuprammonium, pulp, or two or more of them.

5. The stretchable laminated sheet according to claim 1, wherein the hydrophilic short fiber layer is a spunlace non-woven fabric or a wetlaid web.

6. The stretchable laminated sheet according to claim 1, wherein the microfiber layer is a fiber layer obtained by randomly accumulating long fibers produced by a melt blow method.

7. A stretchable laminated sheet, wherein 100 parts by weight of the stretchable laminated sheet described in claim 1 is impregnated with 100 to 1500 parts by weight of drug solution or cosmetics.

8. A product, which is obtained by using the stretchable laminated sheet described in claim 1.