Journal of the Textile Machinery Society of Japan

Changes in Fine Structure of Nylon 6 Gut Yarns in Twisting, Annealing and Untwisting Processes

Ishio Tsujimoto, Teruo Kurokawa, Toshisada Takahashi

1979 Volume 25 Issue 4 Pages 87-92
Published: 1979
Released on J-STAGE: October 24, 2006

DOIhttps://doi.org/10.4188/jte1955.25.87

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The changes in fine structure of Nylon 6 gut yarns by twisting, annealing and untwisting were studied on the term, simulating the false textured yarn process. Wide and small angle X ray diffraction methods and electron microscopic technique were used to make clear the results of the researches.

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Dynamic Tension on Yarns being Unwound from a Beam

Fumio Murakami, Teruo Watanabe, Hideaki Tazaki, Hiroyuki Goto

1979 Volume 25 Issue 4 Pages 93-99
Published: 1979
Released on J-STAGE: October 24, 2006

DOIhttps://doi.org/10.4188/jte1955.25.93

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Dynamic tension fluctuations during unwilling from a beam are analysed under conditions used in usual mills. Cotton, polyester and nylon filament yarns are considered. Taking the dynamic tension as an output and the braking moment applied to the beam as an input, theoretical analysis is carried out. The results show that the tension fluctuations have a fatal influence on the yarns considered, especially on nylon filament yarns, suggesting a necessity of careful designing and controlling of braking systems.

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Washing of Fabrics

Part 3: Theoretical Analysis on Effective Heat Conductivity of Fiber Assembly

Hirohito Matsui, Kazuo Moriyama

1979 Volume 25 Issue 4 Pages 100-108
Published: 1979
Released on J-STAGE: October 24, 2006

DOIhttps://doi.org/10.4188/jte1955.25.100

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The heat conduction under steady state within a fiber assembly was theoretically analysed, and its effective heat conductivity λ_e; (cal/cm•°C•sec), was calculated as follows:
In case of the right angle arrangement, λ_e; /λ_w; =1/b∑<∞><k=0>(-1)^k(bⁿ-β^b-n)A_n; .
In case of the equilateral triangle arrangement, the above equation can be used, or λ_e; /λ_w; =1/b∑<∞><k=0>2A_n; {√<a²+b²>/2}ⁿ-β(√<a²+b²>/2)^-n sinnφ where, n=2k+1 β=parmeter derived from the heat conductivities of fibers and medium λ_w; =heat conductivity of the medium (cal/cm•°C•sec) a, b, φ=parameters depending on the arrangement of fibers in the fiber assembly A_n; =coefficients which satisfy the boundary conditions and can be obtained by applying the least square method along the boundary lines
The results calculated by these equations agreed well with both experimental and reported data.[1, 2]

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Development of Continuous Rope Scouring Machinery “RSC” and Technology

Yoshishige Tachibana, Motokiti Fujiwara

1979 Volume 25 Issue 4 Pages 109-118
Published: 1979
Released on J-STAGE: October 24, 2006

DOIhttps://doi.org/10.4188/jte1955.25.109

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Continuous reciprocal scouring machine (RSC) is a unique machine to which reciprocal mechanism is adopted and operation made more efficient, making use of same squeezing effect of the rope scouring machine.
With comparatively small floor space, high performance with high efficiency and perfectly continuous wet finishing processes of wool fabric from feeding to drying are realized by this machine. Scouring cost is reduced to about half of that of the conventional batch type, saving such energy as water, electricity and steam.

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