Leg product

Patent metadata

Field	Value
Publication number	US-10900151-B2
Application number	US-201716339323-A
Country	US
Kind code	B2
Filing date	Oct 11, 2017
Priority date	Oct 13, 2016
Publication date	Jan 26, 2021
Grant date	Jan 26, 2021

Abstract

This leg product comprising a tubular knitted fabric, in which the entire course of a leg part is knitted in a jersey stitch by using coated elastic yarns comprising elastic yarns and synthetic fibers, is characterized in that: the wale number in the circumferential direction is 340-400 wale; the size ratio is 1.10-1.40.

First claim

The invention claimed is:

1. A leg product having a circumferential-direction wale number of 340 to 400-wale and comprising a tubular knitted fabric having a leg part in which all of the courses thereof have a plain stitch organization of covered elastic yarns composed of elastic yarns and synthetic fibers, wherein
a size ratio as obtained by the following Formula (1):
size ratio=(width-direction elongation of the leg part at a position ¼ from a crotch under a load of 3 kg)/(width-direction elongation of the leg part at a position ¾ from the crotch under a load of 3 kg)

is 1.10 to 1.40, and
a stress ratio as obtained by the following Formula (2):
stress ratio=(return path stress ( N ) at a 50% point)/(forward path stress ( N ) at the 50% point)

is 0.35 to 0.60 when the forward path stress and the return path stress are measured at the 50% point of a third repetition of an elongation/contraction process that is repeated three times, the elongation/contraction process comprising elongating the knitted fabric by 80% in the warp direction at a position ½ from the crotch of the leg part and allowing the knitted fabric to return to an original length.

2. The leg product according to claim 1 , wherein an average coefficient of friction of the leg part at a position ½ from the crotch in the warp direction of the knitted fabric is not greater than 0.250.

3. The leg product according to claim 1 , wherein the covered elastic yarns have a fineness of 13 to 30 dtex and are composed of elastic yarns and polyamide fibers, and an instant heat generation temperature of a surface of the knitted fabric is not greater than 0.40° C. after the knitted fabric has been elongated 500 times to an elongation amount of 110% with respect to an initial length at a position ½ from the crotch of the leg part in the warp direction of the knitted fabric using a repeat expansion/contraction device at a repeat expansion/contraction cycle of 100 repetitions/min as measured by thermography with an emissivity of 1.0.

4. The leg product according to claim 1 , wherein a width-direction stretch length at a position ¼ from the crotch of the leg part under a load of 3 kg is represented by the following Formula (3):
width-direction stretch length (cm)=circumferential-direction wale number×0.11 to 0.14.

5. The leg product according to claim 1 , wherein a portion corresponding to a thigh part of a position ¼ from the crotch of the leg part has a course number of 23 to 30 courses/inch under a load of 3 kg.

6. The leg product according to claim 2 , wherein the covered elastic yarns have a fineness of 13 to 30 dtex and are composed of elastic yarns and polyamide fibers, and an instant heat generation temperature of a surface of the knitted fabric is not greater than 0.40° C. after the knitted fabric has been elongated 500 times to an elongation amount of 110% with respect to an initial length at a position ½ from the crotch of the leg part in the warp direction of the knitted fabric using a repeat expansion/contraction device at a repeat expansion/contraction cycle of 100 repetitions/min as measured by thermography with an emissivity of 1.0.

7. The leg product according to claim 2 , wherein a width-direction stretch length at a position ¼ from the crotch of the leg part under a load of 3 kg is represented by the following Formula (3):
width-direction stretch length (cm)=circumferential-direction wale number×0.11 to 0.14.

8. The leg product according to claim 3 , wherein a width-direction stretch length at a position ¼ from the crotch of the leg part under a load of 3 kg is represented by the following Formula (3):
width-direction stretch length (cm)=circumferential-direction wale number×0.11 to 0.14.

9. The leg product according to claim 2 , wherein a portion corresponding to a thigh part of a position ¼ from the crotch of the leg part has a course number of 23 to 30 courses/inch under a load of 3 kg.

10. The leg product according to claim 3 , wherein a portion corresponding to a thigh part of a position ¼ from the crotch of the leg part has a course number of 23 to 30 courses/inch under a load of 3 kg.

11. The leg product according to claim 4 , wherein a portion corresponding to a thigh part of a position ¼ from the crotch of the leg part has a course number of 23 to 30 courses/inch under a load of 3 kg.

Assignees

• Asahi Chemical Ind

Inventors

• Yoshida Yuji

Classifications

• D04B1/26 Primary

  stockings · CPC title

• A41B11/14 Primary

  Panti-hose; Body-stockings · CPC title

• A41B11/00

  Hosiery; Panti-hose (elastic stockings for curative purposes A61F13/08) · CPC title

• A41B9/02

  Drawers or underpants for men, with or without inserted crotch or seat parts · CPC title

• D04B1/243

  upper parts of panties; pants · CPC title