Internal material of sole, shoe insole and boot

• US 7,709,075 B2
• Filed: 06/29/2005
• Issued: 05/04/2010
• Est. Priority Date: 07/14/2004
• Status: Expired due to Fees

• Current Assignee: Teijin Fibers Limited (Teijin Limited)
• Original Assignee: Teijin Fibers Limited (Teijin Limited)
• Inventors: Suzuki, Atsushi
• Primary Examiner(s): Chriss; Jennifer A
• Application Number:
  US11/632,165
• Publication Number:
  US 20080066347A1
• Time in Patent Office: 1,770 Days
• Field of Search: None
• US Class Current: 428/95
• CPC Class Codes: A43B 1/00 Footwear characterised by the material
• CPC Class Codes: A43B 13/12 Soles with several layers of different materials
• CPC Class Codes: A43B 17/003 characterised by the material made of wood A43B17/12, made of sponge, rubber or plastic materials A43B17/14
• CPC Class Codes: A43B 19/00 Shoe-shaped inserts; Inserts covering the instep
• CPC Class Codes: A43B 23/07 Linings therefor lining laminated with upper A43B23/026
• CPC Class Codes: A43B 5/0405 Linings, paddings or insertions; Inner boots
• CPC Class Codes: Y10T 428/23957 Particular shape or structure of pile
• CPC Class Codes: Y10T 428/23979 Particular backing structure or composition
• CPC Class Codes: Y10T 442/3707 Woven fabric including a nonwoven fabric layer other than paper
• CPC Class Codes: Y10T 442/3715 Nonwoven fabric layer comprises parallel arrays of strand material
• CPC Class Codes: Y10T 442/494 Including a nonwoven fabric layer other than paper

Abstract

A web comprising a matrix fiber containing a non-elastic polyester based short fiber and an elastic composite fiber which is made of a thermoplastic elastomer having a melting point of at least 40° C. lower than a melting point of a polyester polymer constituting the short fiber and a non-elastic polyester, with the former being at least exposed on a surface of the fiber, and optionally a hygroscopic and exothermic fiber is heat molded such that the fibers are aligned in a thickness direction thereof, thereby obtaining a mat layer, onto which is then stuck a surface skin material to form an internal material of shoe, and a shoe insole and a boot are obtained by using the internal material of shoe.

Claims

1. An internal material of shoe comprising a mat layer and a textile surface skin which is stuck to said mat layer,

wherein the mat layer comprises a matrix fiber containing a non-elastic polyester based short fiber and an elastic composite fiber which is made of a thermoplastic elastomer having a melting point of at least 40°

C. lower than a melting point of a polyester polymer constituting the short fiber and a non-elastic polyester, with the former being at least exposed on a surface of the fiber;

at least a part of a contact point between the elastic composite fibers and/or a contact point between the elastic composite fiber and the matrix fiber is heat adhered; and

the matrix fiber and the elastic composite fiber are aligned in a thickness direction of the mat layer.

2. The internal material of shoe according to claim 1, wherein the matrix fiber is a hollow fiber.

3. The internal material of shoe according to claim 1, wherein the matrix fiber contains a fiber capable of generating heat upon absorption of moisture in an amount ranging from 10 to 80% by weight based on the weight of the mat layer.

4. The internal material of shoe according to claim 1, wherein the matrix fiber contains a highly water absorbing and hygroscopic fiber in an amount ranging from 10 to 80% by weight based on the weight of the mat layer.

5. The internal material of shoe according to claim 1, wherein the mat layer has a thickness of 2 to 10 mm.

6. The internal material of shoe according to claim 1, wherein the mat layer has a basis weight of 200 to 1,500 g/m².

7. The internal material of shoe according to claim 1, wherein the surface skin comprises a polyester fiber.

8. The internal material of shoe according to claim 7, wherein the surface skin further comprises a fiber capable of generating heat upon absorption of moisture in an amount of 20% by weight or more based on the weight of the surface skin.

9. The internal material of shoe according to claim 8, wherein the fiber capable of generating heat upon absorption of moisture is an acrylate based hygroscopic and exothermic fiber.

10. The internal material of shoe according to claim 1, wherein the surface skin is a knit fabric.

11. The internal material of shoe according to claim 1, wherein a surface of the mat layer to which the surface skin is stuck is a sliced cut surface.

12. A shoe insole comprising the internal material of shoe according to claim 1.

13. A boot having the internal material of shoe according to claim 1 disposed in the inside thereof.

14. A shoe insole comprising the internal material of shoe according to claim 2.

15. A shoe insole comprising the internal material of shoe according to claim 3.

16. A shoe insole comprising the internal material of shoe according to claim 4.

17. A shoe insole comprising the internal material of shoe according to claim 5.

18. A shoe insole comprising the internal material of shoe according to claim 6.

19. A shoe insole comprising the internal material of shoe according to claim 7.

20. A shoe insole comprising the internal material of shoe according to claim 8.