Method of Predicting the Crimp of Jacquard-Woven Fabrics

The aim of this study was to investigate the distribution of crimp in new jacquard fabric structures (in which one-layer and two-layer weaves are combined) in the fabric width and to create a method of crimp prediction. It was established that crimp was around 18.80% and changed within the limits of errors, i.e., a range of only ~4%, in the fabric width. It can therefore be said that the warp crimp was constant in the fabric width. Because the warp crimp of jacquard fabric changed insignificantly (within the limits of errors), it can be stated that the fabric-setting parameters and structural solutions were chosen and matched correctly, and such fabric can be woven on any jacquard weaving loom.

Influence of 3D warp interlock fabrics parameters made with flax rovings on their final mechanical behaviour

The three-dimensional weaving process enables to produce near-net shaped complex preforms used as reinforcement of composite materials. However, the lack of knowledge on the mechanical behaviour of these three-dimensional woven structures may restrict their use for composite material. To fill this gap, we have tempted to highlight their specific mechanical properties according to their endogenous parameters. Based on these different architectures produced on the same weaving loom, several non-impregnated coupons have been mechanically characterized in all the directions of the three-dimensional warp interlock fabrics with quasi-static tensile tests in warp and weft directions as well as in-plane shear tests. According to our analyses, it has been revealed that the combination of several parameters as the woven pattern, the end and pick densities and the presence or not of stuffer warp yarns inside the three-dimensional fabrics may significantly influence the mechanical behaviour of the three-dimensional warp interlock architectures.

Effects of sizing and yarn structural properties on the physical properties of combed and carded cotton ring yarns

Warp yarns, prepared as warp beam, are exposed to various forces at weaving loom. Warp yarns are bended on the back rest, subjected to friction from drop wires and healds. They are also exposed to friction and impact at reed and thereby abraded. Yarns are sized in order to increase their resistance to these effects. Sizing agents ensure that warp yarns can be weaved with sizing process. On the other hand, yarn count and yarn type (combed or carded yarn) are the significant yarn structural properties that determine and so affect the physical properties of yarn. The main reason and objective this study is to investigate the effects of yarn structural parameters (yarn count and yarn type) and sizing on the physical properties (breaking strength, elongation at break, hairiness, friction coefficient) of 100% cotton carded and combed ring yarns, sized with four different sizing agents, which were not studied in the references. It is observed that sizing process cause to decrease in the hairiness up to 99% and in friction coefficients of combed and carded yarns whereas to increase in the breaking strengths of combed and carded yarns. And also, the combed yarns had better tensile and frictional properties than carded yarns.

Fabrication of capsule-like inflatable woven fabric used for tunnel plugs

Considering safe and continuous operation of the subway tunnel, apart from the conventional drainage system, the entrances or exits of tunnels generally are designed to install special devices to block the influx of either floods due to sudden storms or harmful gases caused by terrorist attack. Traditional devices include metal plates or sandbags. In recent years, researchers have invented textile-based capsule-like inflatable device to replace the traditional devices because the new one can be flexibly located in the tunnel, capable of blocking fluids completely, light-weight and low cost. However, the fabrication of capsule-like textile structure has been seldom discussed in the literature. The capsule-like textile structure is either created by fabric weaving followed by sewing for the capsule form, which may result in unevenness of stress distribution due to existence of seams in the structure, or produced by expensive and specially designed weaving equipment. This paper is to explore two different fabrications of capsule-like textile structure for the purpose that the device is evenly structured and can be produced in one step with conventional weaving loom. The techniques of fabrication with trapezoid-formed reed as well as the application of double-layered structure have been investigated. The contour of spherical crown of capsule-like structure is well in line with calculated values.

The Correlation of Occupational Stress With Subjective Fatigue Women Workers In Weaving Loom Unit PT. X

Background : An occupation with a high risk of work fatigue is an occupation in textile industry. The involvement of women in the textile industry sector in Indonesia is dominant. Women labors who run work on domestic and public sector will be less inclined a work fatigue. Subjective fatigue is the problem faced by women workers at production division weaving loom unit of PT. X. Purpose : This study aimed to determine occupational stress correlation with subjective fatigue in weaving loom unit PT. X. Methods : Type of this observational analytic study was using a cross sectional design. The number of research subject were 95 people. An occupational stress is independent variable. The dependent variable is a subjective fatigue. Occupational stress measurement was using job stress indicator questionnaire. Subjective fatigue measurement was using Subjective Self Rating Test questionnaires. Chi square test used as significance test. All test used 95% confidence interval and significance level of p=0,05. Result : Chi square test result showed that occupational stress has significant association with subjective fatigue. Conclusion : An occupational stress has a positive correlation with subjective fatigue women workers in weaving loom unit PT. X.