Core yarn and woven and knitted fabric

Abstract

It is an object of the present invention to provide a core yarn capable of spinning the higher-grade yarn having the higher yarn count from specified lower-grade raw material and the core yarn makes its texture-feeling, strength and extension rate equal to that of natural fibers. The core yarn is formed of spun yarn including the core formed of filament yarn and the sheath formed of staple, and the filament yarn is a monofilament false twist textured yarn.

Description

FIELD OF THE INVENTION[0001]The present invention relates to a core yarn comprising a core and a sheath, particularly a core yarn using an untwisted filament yarn for the core and natural fiber for the sheath and woven and knitted fabrics using this core yarn.BACKGROUND OF THE INVENTION[0002]Conventionally known is a composite fiber comprising a multifilament yarn of chemical synthetic fiber as a core, which is wrapped around with spun yarn made of natural fiber or chemical synthetic fiber.[0003]The above mentioned spun yarn is a thread in which natural fibers having short fiber-length such as cotton and wool are twisted through conventional spinning process. Filament yarn is a chemical synthetic fiber produced as a continuous long filament yarn through fiber spinning process.[0004]Further, the natural fiber is produced as spun yarn formed of staple fiber aggregate twisted by a ring spinning machine and an air spinning machine. Therefore the natural fiber has lower yarn strength tha...

AI Technical Summary

Benefits of technology

[0017]The present invention was made to resolve the above-discussed problems and has an object of an illustrative, non-limiting embodiment of the present invention is to provide a core yarn which makes superior quality yarn having finer yarn count spun from specified lower-grade raw material and makes texture-feeling, strength and extension rate the same level of those of natural fibers.

[0019]Therefore, in the core yarn, since the core having high flexibility and high yarn strength is wrapped with staple fiber, a spun yarn having fine yarn count can be spun.

[0021]Therefore, since the twist-torque is not left in the core, the core yarn having excellent texture-feeling of softness and smoothness can be span.

[0029]Therefore, fasciated spun yarn comprising untwisted core wrapped around with staple fiber can be easily spun at high speed.

[0031]Therefore, woven fabric and knitted fabric can be obtained using the corn yarn which has desired texture-feeling, strength, extension rate spun using lower quality spun materials.

[0032]As mentioned above, with the present invention, since the core yarn is configured to comprise polyester monofilament false twist textured yarn having specified thickness as a core, and natural fiber wrapping around the core and bundling together, the obtained cotton yarn with core yarn of fine yarn count has high extension rate, high yarn strength and excellent texture-feeling even though low-grade cotton material is used.

Problems solved by technology

However, even with the core yarn comprising the filament yarn as a core, it is impossible to spin cotton yarn having fine yarn count in the case of thick filament yarn.

On the other hand, the-thinner cotton yarn can be spun using the thinner filament yarn, however, it is difficult to spin cotton yarn having desired fine yarn count, because filament yarn is different from cotton yarn in extension rate and strength.

Further, with thin filament yarn used as a core, yarn strength and extension rate are poor and such a sense of superior quality as conventional 100% cotton with fine yarn count has can not be obtained with regard to touch and flexible sensitivity, thereby it is difficult to spin cotton yarn having desired fine yarn count.

And then using with thin and poor strength filament, there is a further problem that filament yarn as a core is separated from spun yarn to cause yarn separation during weaving process and knitting process.

In the case of a ring spinning machine for spinning by entirely twisting the yarn, the core of the core yarn is also twisted and twist torque is left to cause problems of unwinding and threading in the weaving process and the knitting process.

Therefore, especially the core yarn using monofilament as a core is not practically utilized with the ring spinning machine.

Images