Compact multi-filament textile yarn and method of making the same专利检索-螺旋灯丝灯丝白炽灯光源灯具灯光专利检索查询-专利查询网

Compact multi-filament textile yarn and method of making the same

阅读：304发布：2021-06-13

专利汇可以提供Compact multi-filament textile yarn and method of making the same专利检索，专利查询，专利分析的服务。并且The filaments of multi-filament synthetic textile yarn are rendered and maintained sufficiently coherent and compact for high-speed fabricating purposes such as knitting, winding and weaving by continuously disposing special wrapper filaments in generally helical paths around the core filaments of the yarn, at least one such wrapper filament being disposed in a clockwise manner and another wrapper filament counter-clockwise. The wrapper filaments (drawn or undrawn) are continuously applied from over the ends of supply packages, or at the spinneret or otherwise, and if undrawn may be drawn concurrently with the core filaments.，下面是Compact multi-filament textile yarn and method of making the same专利的具体信息内容。

权利要求

1. Compact yarn comprising a plurality of flexible continuous core filaments having substantially zero twist wrapped in coherent fashion under low tension by flexible wrapper filaments spirally arranged about and in contact with said core filaments, the number of core filaments being greater thAn the number of wrapper filaments, at least one of said wrapper filaments being arranged in a clockwise direction and at least another in a counterclockwise direction, said wrapper filaments being composed of continuous filament synthetic polymeric material, and one such wrapper filament being spiraled over the exterior of said core filaments and repeatedly and successively over another wrapper filament as well.

2. The yarn defined in claim 1 wherein said core filaments are continuous filaments of synthetic polymeric material.

3. The yarn defined in claim 2 wherein at least the majority of said core filaments and at least the majority of said wrapper filaments are composed of essentially the same synthetic polymeric material.

4. The yarn defined in claim 1 wherein said wrapper filaments are composed of undrawn synthetic organic material.

5. The yarn defined in claim 1 wherein both said wrapper filaments and said core filaments are composed of undrawn synthetic organic material.

6. The yarn defined in claim 1 wherein the yarn has a denier of about 10 to 10,000.

7. The yarn defined in claim 1 wherein the wrapper filaments comprise numerically about 1 percent - 20 percent of the total filaments of the yarn.

8. The yarn defined in claim 1 wherein the core filaments and the wrapper filaments are closely adjacent and randomly tangled.

9. The yarn defined in claim 1 wherein the core filaments and the wrapper filaments are twisted about the yarn axis.

10. The yarn defined in claim 5 wherein said core filaments are continuous filaments.

11. The yarn defined in claim 1, wherein the core filaments are crimped undrawn, and are subsequently heat set.

12. The yarn defined in claim 1, wherein the wrapper filaments are wrapped about said core filaments at substantially zero tension.

13. The yarn defined in claim 1, wherein the wrapper filaments comprise numerically about 2 percent to 10 percent of the total filaments of the yarn.

14. In a method of making a compact yarn, the steps which comprise continuously feeding a multiplicity of drawable continuous synthetic core filaments along a predetermined path, continuously applying a continuous synthetic drawable wrapper filament in a spiral manner around the core filaments, continuously applying another continuous synthetic drawable wrapper filament in a counter spiral manner around the core filaments plus the wrapper filament previously wrapped, and drawing the resulting yarn.

15. The method defined in claim 14, wherein the core filaments are crimped prior to the application of the wrapper filaments.

16. The method defined in claim 14, wherein the core filaments are dyed prior to the application of the wrapper filaments.

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Compact multi-filament textile yarn and method of making the same

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