Patent ID: 11970796
Assignee: NIPPON FILCON CO., LTD.
Field: Chemical engineering (Chemistry)
Classification: CPC D  B | IPC B  D

Claim 0:
1. A two-layer fabric consisting only of:
an upper surface side layer consisting of upper surface side wefts and upper surface side warps; and
a lower surface side layer consisting of lower surface side wefts and lower surface side warps;
wherein the upper surface side warps and the lower surface side warps consist only of:
a first pair of warps consisting of a first binding warp and a second binding warp that are arranged adjacently, wherein each of the first binding warp and the second binding warp
passes above one of the upper surface side wefts, passes between one of the upper surface side wefts and one of lower surface side wefts, and passes below one of the lower surface side wefts,
wherein when the first binding warp passes above first one of the upper surface side wefts, the second binding warp passes below first one of the lower surface side wefts which is below the first one of the upper surface side wefts, and
wherein when the second binding warp passes above second one of the upper surface side wefts, the first binding warp passes below second one of the lower surface side weft which is below the second one of the upper side wefts,
constitues as one of the upper surface side warps when the each of the first and second binding warps passes above one of the upper surface side wefts, and
constitutes as one of the lower side warps when the each of the first and second binding warps passes below one of the lower surface side wefts;

a second pair of warps consisting only of
one of the upper surface side warps, the one of the upper surface side warps weaves the upper surface side wefts only, and
one of the lower surface side warps arranged under the one of the upper surface side warps, the one of the lower surface side warps weaves the lower surface side wefts only, and

a third pair of warps consisting only of two of the upper surface side warps that are arranged adjacent to each other, the two of the upper surface side warps weave the upper surface side wefts only,
wherein the third pair of warps does not include the one of the upper surface side warps of the second pair, and
wherein the third pair of warps does not include any one of the lower surface side warps that is woven with the lower surface side wefts; and

wherein a minimum repeated unit of the two-layer fabric consists of four of the upper surface side wefts, four of the lower surface side wefts, two sets of the first pair of warps, four sets of the second pair of warps and two sets of the third pair of warps.