Toray Industries, Inc.

Tetsuhiko Endo

Hiromitsu Kanamori

Yoshinori Inouye

Kotaro Fujioka

Kunihiko Ueda

Tadashi Kohara

Syozo Morishita

Nobuo Tsuchida

Tadahiko Ohkubo

Kenzo Tanaka

Osami Tsuchihashi

Akiwo Andoh

Masakazu Hirota

A yarn winding apparatus comprises a rotating drum having a winding part rotatable at a predetermined peripheral speed for winding yarn around a peripheral surface thereof, a transferring part for successively transferring the yarn as wound around the winding part, and a storage part for storing the yarn as fed by the transferring part, the winding, transferring and storage portions being disposed adjacent to one another in the order named, a toothed wheel for catching the continuously supplied yarn around the rotating drum, and a yarn guide for guiding the continuously supplied yarn onto the winding part of the rotating drum. The yarn layers as wound on the winding part are to be discharged successively to the storage part through the transfer part so that the yarn winding speed can be kept always substantially equal to the peripheral speed of the winding part.

Yarn winding apparatus

A process and an apparatus for simultaneously drawing and false-twisting a thermoplastic synthetic yarn, in or by which an undrawn or a partially drawn yarn is drawn under a dry hot condition in a condition of the yarn being false-twisted by twist transmitted from a false-twister and immediately thereafter heat-set under a wet hot condition prior to untwisting. The apparatus includes a yarn heater, which comprises a dry heater disposed on the side of a feeding device for the undrawn or partially drawn yarn and a wet heater on the side of a false-twister along the yarn passing direction.

Process and apparatus for simultaneously drawing and false-twisting

Disclosed is a yarn texturing apparatus for producing a multifilament yarn containing complex interfilament entanglement, comprising a housing having inlet and outlet ends connected by a yarn passage, a turbulence section in the yarn passage, an exit orifice constituting the yarn outlet and communicating with the turbulence section and means for introducing pressurized gas into the yarn passage, which is improved by providing a yarn guide for separating a multifilament yarn blown out of the exit orifice from blown gas while guiding the yarn along a guide surface of the yarn guide. The yarn guide is provided outside of the housing and in the proximity of the exit end of the orifice, in a condition such that the yarn guide does not cross the center-line of the exit orifice and the guide surface of the yarn guide faces the yarn outlet end surface of the housing.

Yarn texturing apparatus

A sample yarn-collecting apparatus for preparing a continuous yarn knotted in an end-to-end manner, in which sample yarns having a certain length are collected from a plurality of yarn packages, each of them are connected in succession in an end-to-end manner to obtain one continuous yarn, and the continuous yarn is wound temporarily and thereafter continuously unwound to be fed to testing means while storing it in a quantity within a predetermined range, is disclosed. This apparatus comprises sample yarn collecting means for collecting sample yarns from packages and connecting each of them to form one continuous yarn, means for storing the continuous yarn fed from said collecting means on a rotary member by winding it and feeding the continuous yarn wound and stored on the rotary member to testing means by unwinding it, and supplementary means for controlling the above two means.

Apparatus for collecting and preparing sample yarns to be tested

A method and apparatus for doubling and twisting a material yarn by a two-step changeover system by utilizing a pot twisting and winding device is disclosed. To produce a doubled and twisted yarn having a yarn configuration of two component yarns forming the yarn in a balanced condition, when the second step operation is carried out so as to double a primary twisted yarn of a yarn package formed in the pot by a first step operation with a yarn fed from a supply source and twist this doubled yarn while eliminating the primary twists imparted to the material yarn, the position of the bottom end of the traverse tube in the pot must be controlled so as to satisfy a particular condition D.sub.2 .gtoreq. L.sub.2, where D.sub.2 represents an inside diameter of the full size yarn package formed in the pot by the first step operation, while L.sub.2 represents a distance between the bottom end of the traverse tube and an inside bottom surface of the pot.

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Ohtsu, Japan

Tetsuhiko Endo