Flip-flop
A flip-flop includes a sole and a strap unit. The strap unit includes a thong portion, and first and second strap portions, and is made by the steps of: providing superposed first and second layers of warp threads; inserting a first weft thread through sheds formed in the first layer of warp threads so as to weave the first strap portion; inserting a second weft thread through sheds formed in the second layer of warp threads so as to weave the second strap portion; and inserting the first and second weft threads through sheds which are cooperatively formed by the superposed first and second layers of warp threads so as to weave the thong portion.
1. A flip-flop comprising:
a sole for a wearer's foot to rest thereon, said sole having upper and lower surfaces, said upper surface including front, middle and rear regions; and
a strap unit including a thong portion which has a first thong end secured to said front region, and a second thong end opposite to said first thong end, and first and second strap portions extending rearwardly from said second thong end to terminate at and be secured to left and right sides of said middle region, respectively, said strap unit being made by the steps of:
(a) providing superposed first and second layers of warp threads;
(b) inserting a first weft thread through sheds formed in said first layer of warp threads so as to weave said first strap portion along a first lengthwise line such that one of first leading and trailing ends of said first strap portion has a first oblique boundary which is at an oblique angle to the first lengthwise line;
(c) inserting a second weft thread through sheds formed in said second layer of warp threads so as to weave said second strap portion along a second lengthwise line such that one of second leading and trailing ends of said second strap portion has a second oblique boundary which is at an oblique angle to the second lengthwise line, and which joins said first oblique boundary to cooperatively define said second thong end at which the first and second lengthwise lines meet; and
(d) inserting said first and second weft threads through sheds which are cooperatively formed by said superposed first and second layers of warp threads so as to weave said thong portion along a direction from one of said first and second thong ends to the other one of said first and second thong ends.
2. The flip-flop of claim 1 , wherein said strap unit further includes first and second extension portions which extend downwardly from said first thong end through said sole to be secured to said lower surface of said sole, said first and second extension portions being made by the steps of:
(e) inserting said first weft thread through sheds formed in said first layer of warp threads so as to weave said first extension portion; and
(f) inserting said second weft thread through sheds formed in said second layer of warp threads so as to weave said second extension portion.
3. The flip-flop of claim 1 , wherein each of said first and second strap portions extends from said second thong end and through the sole to terminate at a distal end which is secured to said lower surface of said sole.
4. The flip-flop of claim 1 , wherein said first and second lengthwise lines cooperatively define an included angle that ranges between 30° and 90°.
5. The flip-flop of claim 1 , further comprising two reinforcing pieces disposed on said first and second strap portions, respectively, and extending along the first and second lengthwise lines, respectively.
6. The flip-flop of claim 1 , wherein steps (b) and (c) are simultaneously implemented by a double weft needles method.
7. The flip-flop of claim 1 , wherein each of said warp threads and said first and second weft threads is selected from the group consisting of a terylene yarn, a nylon yarn, and a metallic yarn.