Internal material of sole, shoe insole and boot
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.
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/m 2 .
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 .