Product Quality Essay

List some measurable physiologic properties of the theoretical account. The properties of textile frameworks are important for the control of tone, as wholesome as for end use determination. There are several physical properties of cloth which affecting the performance and aesthetic of fabric. The first one is fabric count, it influences thickness of the fabric. It is the occur of ends or picks per inch for woven fabrics, or the number of wales or courses per inch for knit fabrics.Variation occurs because of the weaving or plain action and from finishing processes. Usually the higher the fabric count, the better the quality and the higher the cost. The second is fabric unit weight. It is the mass per unit area. It is express in one three ways ounces per square yard, ounces per one-dimensional yard, and linear yards per pound. It is signifi peckt in determining both end use and quality. Moreover, it is fabric width. It means the distance from one edge to the other. Measurem ent is made vertical to the fabric edge, unremarkably including the selvage area.The width is expressed in inches and is usually an average number of measurements taken at evenly spaced musical interval along the fabric pieces. Next one is fabric psychiatristage. It is the process in which a fabric becomes smaller than its original size, usually through the process of laundry. It is undesirable property to the apparels. So the material has to be either shrink resistant or shrink recoverable, such as anti-shrink finish is to persist the fabric smooth and free from undesirable shrinkage. The last one is fabric thickness.It is the distance between the upper and lower surfaces of the material. It is measure under a specific pressure. Warmth and bulk properties depend on the fabric thickness- to-weight ratio. It can also be used as a performance exdecadesion of abrasion resistance or shrinkage tests. Generally speaking, the thicker the fabric is, the much comfortable in wearing. 6. What is the commonly used fabric regardion arrangement? Mainly, two industry methods used are the Ten point and intravenous feeding point systems. The most commonly used is four-point system.A minimum of 10% inspection of fabrics is required. The four-point system derives its name from the basic grading rules that a maximal of four penalty points can be assessed for any single defect. Normally, we inspect 10% of the rolls we receive and evaluate them based on this system. This way, we can stay off fabric related quality problems before it is put into production The pursuit table shows the point system. Size of Defect Penalty Points Length of defects in fabric (either length or width) Defects up to 3 inches 1Defects > 3 inches < 6 inches 2 Defects > 6 inches < 9 inches 3 Defects > 9 inches 4 Holes and openings(largest dimension) 1 inch or less 2 Over 1 inch 4 After inspection, the inspector will add up the defects points and then use the following formula to determin e the rate of points per c yards. There are some common fabric faults, such as bow, skew, hole, mispick etc. Fabric checker should know common defects found in fabrics and he must recognize defects on the fabric at the snip of fabric inspection.For the acceptance criteria and calculation, 40 points per 100 yards is the acceptable defect rate. The ten point system for piece goods evaluation was approved by the textile distributors institute and the National Federation of Textile, in 1955. It is designed to identify defects and to grant each defect a value based on stiffness of defect. The system assigns penalty points to each defect depending on its length and whether it is in the warp (ends) or weft (fill) direction. The following table shows the point system.