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Quality control is essential to ensure product quality in the textile industry and the way of sampling can determine its effectiveness as the facts regarding the quality are derived from the inspection of the samples chosen. Such data can be used in the control charts to determine whether control is necessary at the desirable level and whether further industrial processes are required. If products or processes are not inspected carefully, these decisions cannot be made properly. Two case studies were carried out in order to investigate the effects of two sampling methods, namely, fixed sampling and random sampling, on the detection of yarn characteristics. According to the results of the yarn strength (tenacity) test, it was found that data obtained by random sampling were more revealing about the reality of a spinning process (whether it was in control or out of control) than fixed sampling. The findings also help detect the quality characteristics of different types of yarn, such as ring-spun yarn and open-end yarn.

Wool fiber is commonly used in textile industry, however, it has some technical problems which affect the quality and performance of the finished products such as felting shrinkage, handle, lustre, pilling, and dyeability. These problems may be attributed mainly in the presence of wool scales on the fiber surface. Recently, chemical treatments such as oxidation and reduction are the commonly used descaling methods in the industry. However, as a result of the pollution caused by various chemical treatments, physical treatment such as low temperature plasma (LTP) treatment has been introduced recently because it is similarly capable of achieving a comparable descaling effect. Most of the discussions on the applications of LTP treatment on wool fiber were focused on applying this technique for improving the surface wettability and shrink resistance. Meanwhile, little discussion has been made on the mechanical properties, thermal properties, and the air permeability. In this paper, wool fabric was treated with LTP treatment with the use of a non-polymerizing gas, namely oxygen. After the LTP treatment, the fabrics low-stress mechanical properties, air permeability, and thermal properties were evaluated and discussed.

Comfort is one of the most important attributes demanded by modern clothing consumers. It reflects the psychological feeling of a wearer, featured by three latent independent sensory factors: thermal comfort, tactile comfort, and psychological comfort. This paper presents a detailed discussion of the mechanisms influencing different thermal variables on the basis of the thermal comfort properties of 12 commercial types of uniform materials collected from different sources with various fiber content, blend composition, fabric weave, color and end uses. Results generated include thermal conductivity, air permeability and moisture permeability since it is well established that the movement of heat, moisture and air through a fabric are the major factors governing clothing thermal comfort. The initiated research is intended to enable a quantitative analysis of the comfort properties of uniform fabrics currently in use. The results will help establish comfort levels for a wide range of fabric types and assist in fabric selection during uniform product development. In addition, this study might have potential application to other clothing products as well.

This paper will discuss the new establishment of waveform gauge settings between the revolving flats and cylinder in a Rieter C4 Card. This waveform gauge has been set in seven positions within the carding region and concluded that they slightly reduce the number of neps and short fibres in the carded slivers which further improve the yarns produced. Similar results were obtained in the experiments applied to various grade levels of cotton and blends with polyester.