In daily experiments, when colour matching light box are used, some of them do not conform to the standard on color due to some details, which will cause adverse effects on subsequent production. Here are 7 key steps that you can take to use a colour matching light box. Key step 1: Observing the angle According to international standards, only two observation angles are available, they are: a. Zero-degree light source, 45 degree observation (0°-45°) that the light source illuminates the sample from a zero (vertical) angle of incidence, and the observer observes the sample from 45 degrees. b. Light source, 45° ramp. 45 degree light source, zero degree observation (0°-45°), in this layout, a specific 45 degree angled table (45°Fixed angle table) is used to illuminate the light source from the 45 degree, and the observer observes from zero (vertical) sample. Key step 2: 45 ° light source detection sample placement Regardless of any of the above observation methods, care must be taken to detect the sample as much as possible in the middle of the color matching booth to reduce the effects of the external light source. In addition, the most important thing is that when you need to compare the color of two or more objects, you should also try not to overlap them. It is best to place them side by side for comparison. Key step 3: environmental factors in color All external light that will have the opportunity to shine on the test sample must be avoided. If the window is in the field of view, it should also be covered with grey curtains to cover it, so it is ideal to use a color light box in the black room. Another point that is often overlooked is that no other debris can be placed on the color light box. Key Step 4: Requirements for Converting Light Sources According to the experience of daily life, in our eyes, it is like having a register. When the color changes in a very short time, we can clearly feel it. Therefore, when observing metamerism, if you want to change the light source, you must do it in an instant. Don’t be like the lighting tube we use every day. It will be high after a flash, because it will irritate the eye. Department, affecting the results of the review. Key step 5: Ability to test metamerism The so-called metamerism effect means that under a certain light source, the color displayed by the sample is the same as the requirement, but under another light source, the color difference is not acceptable. Under the D65 light source, the color is no different from the standard, but under A light, the sample color is unacceptable. Therefore, all devices for color light sources must be equipped with two or more light sources to test the same color effect. Key step 6: arrangement of the lamps Although there is no specific requirement for the arrangement of the lamps, the position of the lamps must be a uniform light source in the color matching cabinet, and must not be biased to a certain area. Key Step 7: Record the time used by the standard...

Toys Testing Equipment Nail Bed Flammable Tester is suitable for the burning performance test of cloth toys and filling materials. Perform flammability tests on solid and soft toys and fix samples. The sample to be tested is placed on the nail bed, the sample is ignited by a fire source, the combustion state of the sample is observed, and the combustion performance of the sample is evaluated. Standard: ASTM F963 Nail Bed Flammable Testing Equipment Test Method: 1.Put the specimen on the flammability testing nailed fixture according to the standard. 2.Hold the burning paraffin candle whose flame height is 16mm, maintain the contact of candle with the specimen for 5s or until ignition occurs. 3.If the specimen melts away from the flame, remove the candle and maintain contact for the full 5s or until the specimen ignites. 4.If the ignitions occurs immediately, hold the candle steady and allow the ignited flame to move away. 5.Check the burning statue according to standard ASTM F963 Annex 5. Calculate the burning speed.

Abrasion testing is one of the item that many materials must be tested at present. It is also an important index to determine the physical properties of materials, so as leather abrasion resistance test.The main testing methods for leather abrasion resistance are the Gakushin Abrasion Method, the TABER Abrasion Method and the Martindale Abrasion Method. Gakushin Abrasion Testing Method To testing the degree of damage and decolorization of dyed leather used in shoe upper and lining leather after friction. The test method is to wrap the dry or wet white abrasion fabric on the friction head, then repeated friction on the test piece clamped on the test bench of Gakushin Abrasion Tester. Martindale Abrasion Method This method mainly used wear resistance of textile fabric and leather materials. It specifies Martindale Abrasion Tester for testing. A circular specimen, mounted in a specimen holder and subjected a defined load, is rubbed against an standard fabric in a translation movement tracing a LIssajous figure. The evaluation of the abrasion resistance of the textile fabric or leather is determined from the inspection interval to breakdown of the specimens. Taber Abrasion Method This method is complied with ASTM D3884.The principle:A specimen is placed on a rotating platform and rubbed by the sliding rotation of two abrading wheels. One abrading wheel rubs the specimen outward the periphery and the other, inward toward the center. Thus forming a circular wear mark. After the specified number of frictions, the resistance of abrasion of the sample is evaluated by appearance. Taber Abrasion Tester can simulate the real working conditions or meet the test conditions prescribed by the standard. Also can use different abrasive medium and accessories to do the different test.

Do you have any embarrassing situation in your clothing that has been broken by a sharp object? In real life, our clothes will be broken and torn when worn, which involves the problem of strong tearing of the fabric. Then what is the tear strength? Fabric tear Fabric tearing also referred to as tearing,fabric partial yarn is subjected to a concentrated load to tear the fabric apart. During the use of the fabric, the clothes are hooked by the object, partial yarn is pulled apart by force, so that the fabric forms a strip or a triangular crack, which is also a phenomenon of breakage. Tear Strength It can reflect the degree of catalysis of the finished fabric, so the tearing strength test is performed on the resin-finished cotton fabric and the wool-formed pure or blended combed fabric. Knitted fabrics are generally not subjected to tear test except for special requirements. How to judge if the tear strength of your clothes is qualified or not? There are many methods for the tear strength test: 1. Pendulum method 2. Pants type method (including single tongue method and double tongue method) 3. Trapezoid method 4. Wing method. The most common test method is the pant-shaped single tongue tear test. And how to test it? Cut the sample as belows picture shown according the standard required. Standard require each sample cut into two test sample. One is lengthways. The other one is crosswise. Each test sample should be included at least 5 pieces. Then on test. When the stressed yarn in the sample is separated up and down gradually, the yarn that is not directly stressed begins to have some relative sliding with the stressed yarn., and gradually draws closer to form an approximate triangular area, which is usually called the stressed triangle. Due to the effect of friction resistance between the yarns, the sliding is finite, that is, the number of yarn roots under stress in the triangle is limited.In the stress triangle area, the stress on the bottom edge of the first yarn is the largest, and decreases successively. When it is sliding, the tension of the yarn increases rapidly,  the elongation of the yarn also increases sharply. When the first yarn constituting the bottom edge of the force-triangle triangle is deformed to the elongation at break, the yarn breaks. Thereby a maximum value of a certain tear load is obtained. The next yarn then begins to become the bottom edge of the force triangle, so that the yarn of the non-pull system breaks one at a time to tear the fabric. Lastly, the calculating.the electronic calculation devices divides the first peak and the last peak into four regions,exclude the first region, and records all the peaks in the rest of three region. The average value was calculated and the tear strength of this sample was recorded. (The unit is indicated by N) Testing Equipment: GT-C01-1 Universal Tensile Strength Tester (Dual Column)

Definition and scope In 16 CFR part 1610, the definitions applicable to this standard are specified in detail, such as statutes, rules and regulations, standards, garment exposed parts, coated fabrics, flat textile fabrics, suede textile fabrics, etc. This standard applies to all fabrics made of natural or synthetic fibers that have undergone some sort of finishing or unfinishing, as well as garments made from these fabrics. Not suitable for hats, gloves, shoes and socks, and lining fabrics. Product classification According to the test results, the flammability test for fabric is divided into three grades: Level 1 is general flammability; Level 2 is medium flammability; Level 3 is rapid and intense combustion, and the performance indexes for each level are specified. Combustion performance requirements Specific test methods and combustion performance requirements are specified in this standard. fabric flammability test performance is divided into three levels, and specific indicators are specified according to the type of product. It is clearly indicated that level: Level 1 applies to clothing; Level 2 is only for suede textiles and also for clothing; Level 3 cannot be used to make clothing and is prohibited from being imported into the United States. Notes: Before selling products, manufacturers, wholesalers, importers and retailers need to evaluate the flammability of clothing fabrics to ensure that the clothing meets the requirements. The test results of a few textile products may change, that is to say, in one test the flammability of level 1 or 2 products, in another test the flammability of level 3; The sample quantity shall be ensured to meet the requirements of the test to fully ensure that such textile products meet the standard requirements. The main instruments is: 45 Degree Automatic Flammability Tester

Folding resistance is one of the basic mechanical properties of paper, which is used to indicate the ability of paper to resist reciprocating folding. The folding resistance of the paper is the number of folds required to measure the stretch of the paper after being stretched by a certain force and then folded back and forth until the paper breaks.It is expressed in number of times, the unit is double fold.According to the longitudinal cutting, the test result is the longitudinal folding resistance; according to the transverse cutting, the test result is the transverse folding resistance. Generally, the longitudinal folding resistance is higher than the transverse folding resistance, which is due to the arrangement of the fibers and the high bonding strength of longitudinal fibers. Folding resistance is one of the important indicators of the mechanical strength of paper and paperboard. The folding resistance is very meaningful for reflecting the performance of the paper bag and the carton lining paper. Any paper that needs to be folded frequently when used generally has strict requirements on the folding resistance. GESTER's MIT Folding Endurance Tester is used to determining the folding resistance of paper. MIT Type Paper Folding Endurance Tester GT-N16 conforms to the standards ISO 5626, GB/T 2679.5, QB/T 1049 and is apply to the measurement of paper and other sheet materials with thickness less than 1 mm.With data processing function, Folding Endurance Test For Paper can directly output statistical result data. easy to operate, easy to adjust, and  stable performance.

45 Degree Automatic Flammability Tester is mainly used in garment fabric tent fabric, such as decorative fabric flame retardant performance measurement is composed of control system and combustion chamber, the sample is installed in the combustion chamber sample rack, the tilt Angle of 45 fire mouth close to the sample, with the flame returned sample stipulated time, observation sample combustion condition and speed of the spread of flame on the sample, evaluation of ignition and flame spreading performance of the sample. 45 Degree Flammability Tester Testing principle: 1. Combustion intensity and speed test Under specified conditions, the sample is placed at an Angle of 45 degrees, the sample is ignited for 1s, and the time required for the sample to burn upward with flame for a certain distance is used as a measure to evaluate the intensity of the textile combustion. The fabric with surface flapping is used as an additional indicator for the intensity of combustion. 2.Damage area and length test Under the specified test conditions, the textile samples were ignited in the direction of 45 degrees, and the after burning and smoldering time, damage area and damage length of the fabric after combustion were measured. 3.Times of touch with flame test Under the specified test conditions, the textile samples were ignited in the direction of 45 degrees, and the number of times of touch with flame was measured when the fabric was burned 90mm from the lower end of the sample. GESTER 45 Degree Flammability Tester Operational program: 1.Take a sample holder that has been installed from the dryer, place it on the sample rack in the test instrument, pass the sign line through the guide wire hook of the sample rack plate, and then hang a hammer on the sign line just below the guide wire ring to make it taut. 2.The door is shut off test set the timer to zero, press start button, the timer start time, that the flame is in contact with the specimen surface 1 s when the flame burning to hang on the top of the marker of sample, the heavy hammer falling due to line was burn out, the timer stop timing, accurate records chronograph is shown in the burning time of the specimen to light out of the dryer time should not exceed 45 s. 3. During the test, the combustion condition of the sample should be observed. If the combustion is not complete, then should be observed if there is any sign of carbonization or melting on the back of the sample or not.

It needs for twisting when you spinning short fibers into continuous yarns.They keep the aggregate force when they stay together, then gives the strength of yarn. Filament in composite filaments also requires mild twisting. It will be dislodged or scratched in use if they are not tied together. In addition, according to various kinds of applications, plurality of single yarns can be combined and twisted to become plied yarns and cables, to make them keep uniform and stable for sustaining higher load. When at least two yarns twist with different speeds and tensions, or twist with different colors or fancy yarns, they can form fancy yarns. Twisting is a method of bringing bundle fiber, filament yarn, and single yarns together. It can help textile bears force, change and rub in production and in use. And gives textile fresh appearance. 1.Concept of Twist As well as affecting the tensile performance of the yarn, the twist also will affects the diameter, specific volume, softness and stiffness of yarns, affecting the covering performance, heat retention, crease recovery, dyeing rate and permeability of the textile. It also affects the hairiness of the yarn surface. Twist is an important indicator of the structural characteristics of the yarn. In addition to the twist and twist multiplier can be expressed, the twisting direction of the yarn is also important. It  refers to the tilting direction of the yarn when adds twist. There are two types of twist: S-plied(twist to the left) and Z-plied(twist to the right). Most manufactured single yarns are spun with a Z twist.To ply these Z-plied together, they are twist with an S twist to give a balanced plied yarn. 2.Methods of Twist Testing There are 2 commonly testing methods: direct counting method, Untwist-retwist method. The short fibers and plied yarns commonly use the direct counting method, while the spun yarns use Untwist-retwist method. Besides, they are Double untwist-retwist method, Double untwist-retwist method and Sliding method. (1.)Direct counting Fixed the one side of sample,another one at one rotating direction of untwisting.When the fibers in the yarn are completely parallel, and the degree of retraction is the number of turns of the length on this sample. The direct counting method is the basic method. The measurement results are relatively accurate and often used as a criterion for assessing the accuracy of other methods.However, this method is inefficient in operation. If the fibers in the yarn are kinked, the fibers can not easy to become parallel, and the fibers are easy to broken. The direct counting method is generally used to count the number of rovings or plied yarns. For spun yarn, it can be carried out by black and white yarn number method. It means that a black roving and a white roving are used to feed the same yarn to spun the black and white yarn. With the increase of remove twist, the distance will become larger between the black and white on the yarn, and easy to manuall...