Claims
- 1. A process for producing a composite yarn, which process comprises the step of bringing together at least two components yarns A and B and feeding to a false twister and thereby false twisting, where the component yarns A and B, when brought together, are at respective temperatures different from one another and component yarn B is heated to a temperature higher than the glass transition temperature while they are false twisted.
- 2. A process according to claim 1, wherein the component yarn B is composed of thermoplastic synthetic fibers selected from the group consisting of semi-drawn fibers and undrawn fibers.
- 3. A process for producing a composite yarn, which process comprises the step of bringing together at least two component yarns A and B and feeding to a false twister and thereby false twisting, wherein the component yarns A and B when brought together are at respective temperatures different from one another and component yarn B is heated to a temperature higher than the glass transition temperature while they are false twisted, and wherein the component yarn B is composed of thermoplastic synthetic fibers selected from the group consisting of semi-drawn fibers and undrawn fibers.
- 4. A process according to claim 3, wherein the component yarn B, when brought together, is at a temperature lower than that of the component yarn A, and is heated unevenly in the axial direction thereof while they are false twisted.
- 5. A process according to claim 3, wherein the false twisting is carried out with an apparatus selected from the group consisting of an external contact type friction false twister, a belt nip false twister and a spindle false twister.
Priority Claims (2)
Number |
Date |
Country |
Kind |
7-235169 |
Sep 1995 |
JP |
|
7-350549 |
Dec 1995 |
JP |
|
Parent Case Info
This Application is a Division of U.S. application Ser. No. 08/712,273, filed Sep. 11, 1996, now U.S. Pat. No. 6,074,751.
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