Toray Industries, Inc.

Kozo Imaeda

Kiyoshi Nakagawa

Masatoshi Mineo

Tadayuki Matsumoto

Method for producing an interlaced multifilament yarn by rubbing and scratching a material multifilament yarn with a rotary rough surface member and with such intensity that individual filaments constituting the filament yarn are not substantially broken, the rotary surface member having projections which are smaller than the cross-sectional diameter of the individual filaments of the material yarn; diffusing a jetted fluid which is jetted in the yarn running direction along a predetermined yarn passage from a jetting aperture of a supply conduit through a nozzle formed with a rectifying and diffusing portion having a substantially uniform cross-section, and impinging the diffused jetted fluid against the running material multifilament yarn so that the individual filaments of the multifilament yarn mostly vibrate in a direction substantially parallel to a plane defined by the yarn running direction and the fluid jetting direction, the vibration taking place in a section of the yarn passage facing the rectifying and diffusing portion.

Method for producing an interlaced multifilament yarn

Method for producing an interlaced multifilament yarn comprising previously rubbing and scratching a material multifilament yarn with an intensity such that the individual filaments constituting the multifilament yarn are not substantially broken by a rotary rough surface member having sharp projections which are smaller than the cross-sectional diameter of the individual filament of the multifilament yarn; then diffusing at least one jetted fluid, each jetted in the yarn running direction along a predetermined yarn passage from a jetting aperture of a supply conduit through a nozzle formed with a rectifying and diffusing portion having a substantially uniform section with the supply conduit being fixed with respect to the members defining the yarn passage; and then impinging the diffused jetted fluid against the running material multifilament yarn so that the individual filaments of the multifilament yarn mostly vibrate in a direction which is substantially parallel to a plane defined by the yarn running direction and the fluid jetting direction with the vibration taking place in a section of the yarn passage facing the rectifying and diffusing portion.

Method for producing an interlaced multi-filament yarn

Method for producing an interlaced multifilament yarn comprising previously rubbing and scratching a material multifilament yarn with an intensity such that the individual filaments constituting the multifilament yarn are not substantially broken by a rotary rough surface member having sharp projections which are smaller than the cross-sectional diameter of the individual filaments of the multifilament yarn; then diffusing at least one jetted fluid, each jetted in the yarn running direction along a predetermined yarn passage from a jetting aperture of a supply conduit; and then impinging the diffused jetted fluid against the running material multifilament yarn so that the individual filaments of the multifilament yarn mostly vibrate in a direction which is substantially parallel to a plane defined by the yarn running direction and the fluid jetting direction.

An apparatus for producing interlaced multifilament yarn having an improved configuration is disclosed. When a material yarn is treated by an interlacing apparatus provided with an interlacing nozzle wherein a hollow longitudinal space is formed therein and a jetted fluid is introduced into the hollow longitudinal space, the jet fluid is directed to an axis of the passage of a running yarn in the longitudinal space along a direction substantially perpendicular to the axis of the yarn passage in such a condition that the jet fluid is diffused to a direction along the yarn passage. Accordingly, the individual filaments of the running yarn are vibrated about the axis of the running yarn passage, mainly along a plane defined by the axis of the yarn passage and the axis of a fluid conduit for supplying the jet fluid. According to such effective vibration of the individual filaments, a very stable interlaced configuration of the individual filaments can be created. If the material multifilament yarn is false twisted previous to the interlacing treatment, a more stable interlaced configuration of individual filaments can be created. The thus produced interlaced multifilament yarn has such a superior property that the degree of interlacing is increased by repeated stretch action and, consequently, the multifilament yarn thus produced is very suitable for use as a warp yarn without any additional twisting or sizing operation.

Apparatus for producing interlaced multifilament yarns

A method and apparatus for producing interlaced multifilament yarn having an improved configuration is disclosed. When a material yarn is treated by the interlacing apparatus provided with an interlacing nozzle wherein a hollow longitudinal space is formed therein and a jetted fluid is introduced into the hollow longitudinal space, the jet fluid is directed to an axis of the passage of a running yarn in the longitudinal space along a direction substantially perpendicular to the axis of the yarn passage in such a condition that the jet fluid is diffused to a direction along the yarn passage. Accordingly, the individual filaments of the running yarn are vibrated about the axis of the running yarn passage, mainly along a plane defined by the axis of the yarn passage and the axis of a fluid conduit for supplying the jet fluid. According to such effective vibration of the individual filaments, a very stable interlaced configuration of the individual filaments can be created. If the material multifilament yarn is false twisted previous to the interlacing treatment, a more stable interlaced configuration of individual filaments can be created. The thus produced interlaced multifilament yarn has such superior property that the degree of interlacing is increased by repeated stretch action and, consequently, the multifilament yarn thus produced is very suitable for use as a warp yarn without any additional twisting or sizing operation.

Growing community of inventors

Shizuoka, Japan

Kozo Imaeda