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目前显示的是 五月, 2019的博文

The Color fastness test to washing

The Color fastness test to washing is used to predict the performance of any dyed or printed textile product to the common washing  process using a detergent and additives. Some of the test conditions in ISO and all the AATCC conditions are designed to simulate the behaviour of the textile after 5 domestic or commercial launderings. The test machine : Preparation of the samples: the sample has to be tested in the delivered condition; don’t wash and/or tumble it before testing it has to be used only multifibre from James Heal the washing solution has to be prepared freshly (one litre) the current liquor ratio (liquor/sample) is 20:1 we do not accept below mentioned specimen prepared in wrong way:  A) extra stitches (like overlock stitching ect.)  B) additional fabric  C) incorrect multifibre Test procedures for Washing Fastness: 1、Take two pieces of fabric about 5cm by 5cm, one of which is undyed cotton and the other undyed wool. Stitch them together ...

How to do the color fastness test to washing

Color fastness to washing is the common quality parameter, which is considered very important from the point of view of consumers. This test determines the loss & change of colour in the washing process by a consumer and the possible staining of other garments or lighter portion that may be washed with it. The color fastness testing to washing  First, the purpose and principle: 1, this test method is applicable to the detection of conventional home or commercial washing process for home textiles washable color fastness 2, this test method for washing color fastness test for does not reflect the conventional commercial washing process added by the utility of brighteners. 3, a single wash test (STest) results with a home or commercial wash effect. Second, the preparation before the experiment: Cut the sample size of 40mm100mm and multi-fiber cloth, and along the sample and a short edge of the multi-fiber cloth and the multi-fiber cloth face to face sewing toge...

Definition Of The Scratch testing for automotive paints

Scratch testing is invaluable to gain insight into materials such automotive paints, varnishes, as well as coatings. Scratch testing is a simple and rapid method of characterizing coatings, but results obtained are influenced by various factors such as coating thickness, substrate mechanical properties, interfacial bond strength, and test conditions such as scratch speed, load, and indenter tip radius.Single asperity scratching allows the mechanisms behind abrasive or ductile damage to be understood without the complexity of multiple asperity contacts. Scratch Test:Using a scratch tester, qinsunlab is able to determine the critical load of a coating by detecting its initial failure.  A Rockwell diamond tip with a radius of 200 µm is moved across the coated surface at a constant velocity while an increasing normal force is applied with a constant loading rate.  This test introduces stresses to the interface between coating and substrate causing eventual delamination or chi...

How to evaluate the wear performance of Carpet?

Carpet wear testing in the laboratory for surface appearance change, 20,000 foot traffic units is the recommended standard for household applications. ASTM D 6119 – 97 section 10.1 Section 1.2 states, “This practice is applicable to most changes in surface appearance observed in all types of carpet that are intended for residential or commercial use. It eliminates change in appearance associated with soiling by focusing on appearance change due to matting, flattening, or change in pile fiber configuration. Although “pile reversal” or “watermarking” is occasionally visible, this practice is not a reliable method for producing this phenomenon.” During controlled carpet wear testing the carpet is vacuumed every 1000 foot traffic units using a dual motor, top-loading, upright vacuum cleaner with a rotating brush. Onsite Evaluation When evaluating an actual installation onsite we are not dealing with controlled laboratory conditions. Therefore it is important for us to obtain info...

what is Seam Fatigue Tester

The Seam Fatigue Tester  from Qinsun lab is a two station bench top machine, used for evaluating fabric or leather seating materials resistance to tearing or needle hole elongation of a sewn seam. Each station includes a pair of suitable clamps for attaching the test sample. The seam fatigue tester is designed to evaluate the fatigue resistance of seam on the material which is applied on the surface of automotive seat. The surface material of car seat (leather, synthetic leather, fabric, etc.) is often stitched together. The stitching strength of the material seam and the fatigue strength of the seam can directly affect the service life of the seat. The strength and life of the joint of the test material can effectively predict the life of the seat and provide the direction of improving the service life. The operator installs the set up gage between one pair of sample clamps on a station. The sewn test sample is aligned and clamped into position.The set up gage is rem...

What does Hydrostatic Head Tester refer to?

Hydrostatic Head Tester is used for measures the resistance of a fabric to the penetration of water under hydrostatic pressure.It is also used to test the resistance of permeability of synthetic blood for materials used in protective clothing. Dynamic, static, custom mode for different test requirements. This Hydrostatic Head apparatus is used to determine the resistance of textile fabrics to penetration by water at a constant rate of increase of pressure.  The hydrostatic pressure supported by a fabric is a measure of the resistance to the passage of water through the fabric.  A specimen is subjected to a uniformly increasing pressure of water on one face, under standard conditions, until penetration occurs in three different places.  The hydrostatic pressure at which water penetrates the fabric at the third place is noted. Hydrostatic Head Tester is designed to determine the waterproof property of outdoor wears, umbrella, and waterproof fabric.  One side of ...

Skills for prevent Dry cleaning problems

Dry cleaning Test Machine is suitable for the determination of the change of physical indexes such as the appearance color,size change and peel strength of the clothing and various textiles by organic solvent  , alkaline solution after dry cleaning. Dry cleaning of the dry washer and maintenance of the dry-cleaning machine should be carried out after the dry-cleaning machine is cooled to prevent burns caused by incorrect opening. Steam inlet pipe should be equipped with decompression device to prevent overpressure steam into the dry cleaning machine and cause the risk of pipe burst. Often check the steam pipe with or without aging, leakage phenomenon, to prevent the collapse of broken pipe fittings. Fire hazard: A, according to the safety requirements of electricity matters, often looking for electricity hidden dangers, to prevent electrical ignition caused by fire. B, some additives such as gasoline, benzene and other flammable materials should be st...