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目前显示的是 十一月, 2017的博文

Moisture Management Test Method -AATCC 195

MMT textile moisture management tester Test Method -AATCC 195 is for the measurement, evaluation and classification of liquid moisture management properties of textile fabrics. The test method produces objective measurements of liquid moisture management properties of knitted, woven and nonwoven textile fabrics. The test method produces objective measurements of liquid moisture management properties of knitted, woven, and nonwoven textile fabrics. The results obtained with this test method are based on water resistance, water repellency, and water absorption characteristics of the fabric structure, including the fabric's geometric and internal structure and the wicking characteristics of its fibers and yarns. The results obtained with this test method are based on water resistance, water repellency and water absorption characteristics of the fabric structure, including the fabric's geometric and internal structure and the wicking characteristics of its fibers and yarns.

The Taber Scratch Tester

  Scratch Resistant tester is a motorised scratch tester used to test the resistance of many materials to scratching, shearing, gouging, marring, scraping and engraving.The height of the scale beam is adjusted by the user to match the thickness of the sample. The tool, a conical diamond tip, is then placed on the sample and the instrument is activated by the user with the On/Off switch. The tip leaves a trace mark and the extent of this, in relation to the load used, indicates the degree of coating or material hardness. The turntable rotates at a constant 5rpm to ensure repeatability and reproducibility of tests. By changing the load on the tool, from 0 - 1000g (0 - 2.2lb), the sample’s scratch resistance can be  evaluated. Scratch tester is applicable to all types of wiping performance test of automotive interior materials; test equipment integrated three domestic standards (fingers scraping method, a hundred grid method, and plastic scraping finger scraping method). This

The Test Process Of Fabric Pilling Tester

The Fabric Pilling Tester Test Process: 1. Sample production: (1) pretreatment: if pretreatment is required,use water washing or dry cleaning for samples. (In order to protect the friction surface of the box and the sample tube from the fabric residual lubricant or finishing agent, the pretreatment is proposed) (2) Cut four samples from the fabric sample and cut a piece of the same size for comparison reference. Two specimens were folded inwardly along the longitudinal direction, and two specimens were folded in the transverse direction, and sewn with a sewing machine at a distance of 12 mm from the edge. (3)Turn over the suture sample with front face outward.  Cut 6 mm port in the sample tube at both ends  to remove the sewing deformation. Place the sample on a polyurethane carrier tube and secure it with PVC tape (6 mm to ensure that both ends of the polyurethane are exposed and the tape length should not exceed 1.5 times the circumference of the polyurethane tube). 2. Test pr

Important Points Require Consideration Before Abrasion Tests

A number of important points require consideration before abrasion resistance tests are carried out. The choice of the method may be governed by the type of apparatus available, the precision demanded and so forth. Some of the more important points are condition of the specimen, choice of testing instrument, choice of abrasive motion, direction of abrasion, choice of abradant, backing the specimen, cleanliness of the specimen and instrument, tension on the specimen, pressure between abradant and specimen, end-point of the test etc.  Now there are various abrasion resistance testing instruments available for example, the WIRA abrasion tester, the LIRA abrasion tester, the Taber abraser , the Shiefer machine, the Wyzenbeek abrasion tester , the Stoll universal wear tester, the LINRA wear tester, the BFT abrasion tester etc. The abrasion tester we used here is made by Qinsun Instrument. In this instrument abrasion surfaces wrapping by sand paper are used to abrade the fabric samples.

Wyzenbeek Abrasion Test

The Wyzenbeek abrasion tester test is used primarily in North America. The test was originally developed to determine the ability of automotive tires to withstand road abrasion. This abrasion testing method has been modified to test all types of materials against abrasion. In its various iterations, the test can be used to test clothing textiles, leather, upholstery fabric, automotive tires and floor covering. Wyzenbeek abrasion tester test is used to determine the abrasion resistance of fabrics when rubbed against a standard abradant or a wire mesh screen in a backward and forward motion over a curved surface. Particularly it’s suitable for abrasion resistance of fabrics used in the automotive and furniture industry. The instrument follows the U.S. standard with four friction heads and electronic counters to control the operating cycle. Though considered a stringent test, the Wyzenbeek does not necessarily measure “real life” conditions. The fabric to be tested is stretche

6-12-24 Working Places Bally Leather Flexing Tester

Bally leather flexing tester determines leather resistance to continuous flexion. The equipment is fitted with either 6, 12 or 24 working stations. bally flexometer also Can determine tendency for cracks to form in the creases caused by walkingThe whole clamps and relevant structure is entirely stainless steel applied. Digital cycle counter provides repeatable long process solution. Bally flexometer is the internationally-accepted method for the assessment of the flexing endurance of light leathers and their surface finishes. The tendency for cracks to form in the creases caused by walking can also be determined.The Bally flexer has a different flexing mechanism to the vamp flexer (STM 601) and is complementary to it. It is also used to precondition samples prior to determining water vapour permeability – particularly in assessing uppers for protective footwear. The twelve stations are conveniently arranged for user access and sample mounting. A predetermined counter is fitted

Application of Universal Wear and Abrasion Resistance Tester

Universal Wear Tester , to determine the wear and abrasion resistance of fabric used in clothing, footwear and industrials. Universal wear tester Supplies with surface abrasion head (inflated diaphragm method) and Flex abrasion head as well as necessary weights and initial supply of abrasives. Accessories are available for conducting frosting, pilling and edge abrasion tests. Universal Wear and Abrasion Resistance Tester is mainly composed of control system and friction system. The sample is installed on the clamp and is tightened. The upper fixture with the sandpaper is going down, adjust the position of the weight so that the sandpaper in contact with sample surface, through the control system set the number of friction times of the sample, and start the instrument. The lower fixture base does front-to-back motion, so that the sample and sandpaper being rubbed against each other. When the number of times the movements reach the set value, the instrument stops and remove the

Sample Preparation and Test Procedure of Fabric Stiffness Measurement

Sample preparation To ensure consistent fabric properties day after day, all test specimens are first conditioned to approximately 70 degrees Fahrenheit and 65% relative humidity. Once the fabrics are adequately conditioned, test specimens are cut to 8 inches by 4 inches. To ensure the results are representative of the fabric in question, five individual specimens are cut from different locations on a roll of fabric. Next, the specimens are folded in half, resulting in a 4-inch-square folded test specimen. For consistency in testing fabrics that have a different face and back, samples are always folded so the technical face of the fabric is on the outside. Test procedure When a specimen has been prepared, it is placed on the orifice platform and is ready for testing. At this point, the plunger is activated and begins pushing the sample down through the orifice. Once the plunger has forced the fabric through the specimen, the maximum force required to do so is displayed on the