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Volume 26, Issue 6
Displaying 1-6 of 6 articles from this issue
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[in Japanese]1985 Volume 26 Issue 6 Pages 226-231
Published: June 25, 1985
Released on J-STAGE: September 30, 2010
JOURNAL FREE ACCESSDownload PDF (933K) -
[in Japanese]1985 Volume 26 Issue 6 Pages 232-235
Published: June 25, 1985
Released on J-STAGE: September 30, 2010
JOURNAL FREE ACCESSDownload PDF (1979K) -
[in Japanese]1985 Volume 26 Issue 6 Pages 236-240
Published: June 25, 1985
Released on J-STAGE: September 30, 2010
JOURNAL FREE ACCESSDownload PDF (692K) -
Harumi Morooka, Masako Niwa1985 Volume 26 Issue 6 Pages 245-252
Published: June 25, 1985
Released on J-STAGE: September 30, 2010
JOURNAL FREE ACCESSIt is the purpose of this paper to examine how the shrinkage of baby's underwear varies with the number of launderings and to find out some factors affecting the shrinkage behavior. Further, It is also purpose to find out the relationship between the shrinkage of fabrics due to repeated laundering only and the shrinkage of shirts due to repeated wearing and laundering cycles. The results are as follows:
(1) A linear relationship was recognized between the square root of the number of launderings, √N and the shrinkageSof the specimen; S=a√N+b, Where“a”and“b”are constants.
(2) Constant“a”in wale direction is generally positive value and that in course direction is negative value. In other words, a fabric tends to shrink in wale direction and to expand in course direction.
(3) The absolute values of constant“a”and“b”of the course direction are larger than those of the wale direction.
(4) The important factors which influence the shrinkage behavior are dimensional ratio of (length/width) of the specimen, weight per unit area and cotton contents. Increasing dimensional ratio and weight and decreasing cotton contents tend to increase the dimensional stability.
(5) When the dimensional ratio of (length/width) of the specimen was nearly equal to that of (full length/hem girth) of shirt, the correlation was significantly recognized between shrinkage behavior of full length of shirt and wale direction of the specimen. And the correlation was also significantly recognized between shrinkage behaviors of trunk width and hem girth of shirt and course direction the specimen.View full abstractDownload PDF (928K) -
Effects of Formulation of Anionic Surfactant, Sodium Polyacrylate and Protease on Detergency of Fabrics Artificially Soiled by the Aqueous Dispersion MethodMasako Sato, Kaori Takimoto, Motoi Minagawa1985 Volume 26 Issue 6 Pages 253-259
Published: June 25, 1985
Released on J-STAGE: September 30, 2010
JOURNAL FREE ACCESSEffects of a formulation of an anionic surfactant (DBS or AOS), sodium polyacrylate (SPA) and protease (Alcalase) system on the detergency of the artificially soiled fabrics were studied in relation to the properties of the solution by means of the Scheffés Simplex Lattice Design.
(1) Because of the influence by the behavior of solid soil removal, the maximum detergency of protein (gelatin) soil was found on the lattice of low concentration (32-35%) of Alcalase with the multiple effects of two components, Alcalase and SPA.
(2) The detergency of solid soils (mud and carbon black) were affected by the inter-active characteristics of the surfactants with calcium ion. Therefore, the contribution of DBS in the systems of three components on solid soil removal efficiency depends on the water hardness.
(3) The contribution of Alcalase in the three component systems were constant regardless of the sort of soils and water hardness. This result showed that the detergency of the artificially soiled fabrics were exceedingly influenced with the behavior of the soil release composed of protein and particulate soil.View full abstractDownload PDF (856K) -
Development of an Apparatus for Measuring the Rate of Moisture Transfer through a FabricNobuya Kuroda1985 Volume 26 Issue 6 Pages 260-266
Published: June 25, 1985
Released on J-STAGE: September 30, 2010
JOURNAL FREE ACCESSA new apparatus which can precisely evaluate the rate of moisture transfer through a fabric was developed to study the mechanism of moisture transfer properties through a fabric. This apparatus consists of two chambers located on both side the specimen; one is maintained at relatively high constant moisture concentration by saturated aqueous solution of an inorganic salt and the other is maintained at lower moisture concentration by desiccant. The moisture is transported from higher moisture concentration chamber to the lower one through the specimen, and the rate of moisture transfer through the specimen is measured from the rate of increasing weight of the desiccant. In order to keep the boundary condition to be constant on the surface of the specimen during the measurement, a constant airflow is supplied on both side of the specimen by small fans mounted in both chambers.
Using this apparatus, moisture permeability of some commercial fabrics were measured, and it was shown that the apparent moisture permeability or the apparent resistance to the moisture transfer were not so changed from fabric to fabric, but the specific permeability or the specific resistance of each fabric determined by a suitable analysis of the measured data, were greatly influenced by the porosity of the fabrics.View full abstractDownload PDF (918K)
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