When a mask is accidentally exposed to flame, its flame retardant performance is directly related to the safety of medical personnel. Therefore, the flame retardancy of the mask is one of the important physical indicators to measure the quality of medical masks. It is related to the material of the mask fabric itself on the one hand, and the flame retardant treatment effect on the surface of the fabric on the other. The following commonly used mask standards all stipulate the combustion performance: GB 19083-2010, YY 0469 stipulates: the mask material should be made of non-flammable materials, and the mask burns for no more than 5s after leaving the flame. GB 2626 stipulates: if the product design is not flame retardant, it is necessary to provide explanatory information. If the product design is flame retardant, each part exposed to the flame will continue to burn for no more than 5s after the flame leaves. Medical Face Mask Flame Resistance test: Using a metal head mold and a burner, the mask wearer was simulated to pass through a high-temperature flame, and the flame retardant effect of the mask was detected. Testing instrument: Mask Flame Retardant Tester GT-RA06

Advantages of ultraviolet disinfection technology: The disinfection effect of ultraviolet disinfection technology on bacteria, viruses and other pathogens has been recognized worldwide, and it has unmatched sterilization efficiency of other technologies. The bactericidal effect of ultraviolet rays on bacteria and viruses is generally within one second. For traditional chlorine and ozone methods, it usually takes 20 to 50 minutes to reach the sterilization effect of ultraviolet rays. uv sterilization machine has high efficiency sterilization and broad spectrum, no secondary pollution, safe and reasonable design, safe and reliable operation. The operation and maintenance are simple and the cost is low. This Face Mask UV Sterilization Machine occupies a small area without noise. Continuous mass sterilization. There are many advantages such as wide application fields. Maintenance of ultraviolet sterilization machine: 1 Regular inspection to ensure the normal operation of the UV lamp. 2. After continuous use for 8000 hours or one year, the UV lamp should be replaced. When replacing a new lamp, first unplug the lamp power socket and take out the ultraviolet lamp. Be careful not to touch the quartz glass of the new lamp with your fingers, because the stain will affect the intensity of the light, and at the same time carefully put the lamp into the interior of the sterilizer.

The method for testing the waterproof performance of fabrics mainly includes hydrostatic head test method: one side of the fabric is subjected to hydrostatic pressure. When the hydrostatic pressure is gradually increased, and the other fabric is exuded, the water column height of the hydrostatic water indicates the water permeability of the fabric. Sex. This method is mainly to test the water permeability of the fabric. To measure the water permeability or water repellency of a fabric, it is necessary to measure its water repellency or water conductivity. Different methods are used depending on the actual use of the fabric, and the water permeability or water repellency of the fabric is indicated by various corresponding indexes. hydrostatic head test method (fabric hydrostatic pressure tester) Hydrostatic pressure refers to the ability of the fabric to seep under a certain water pressure. It is suitable for all kinds of fabrics, including those that have been waterproofed. The water repellency of the fabric is related to the water resistance of the fibers, yarns and fabric structures. The results are not the same as water spray and rain on the fabric surface. The water repellency of the fabric was measured by hydrostatic pressure method, and there were static pressure method and dynamic pressure method. The hydrostatic method is to apply hydrostatic pressure on one side of the fabric, and measure the amount of water discharged under this hydrostatic pressure, the time of water drop, and the value of hydrostatic pressure at a certain amount of water. The hydrostatic pressure can be the height of the water column or the pressure. In the actual measurement, a per unit area and a permeation amount (mL / cm2 · h) per unit time are used. For waterproof fabrics, measure the time required for water droplets to appear on the other side of the sample, or observe the number of water droplets that appear on the other side after a certain period of time. The principle of the dynamic pressure method is the same as the static pressure method, except that P is a variable. It is to apply a constant pressure of water pressure P on one side of the sample until the other side is penetrated by water to show a certain number of water drops, the imposed water pressure P. This method is more suitable for coated fabrics or tightly structured fabrics. Hydrostatic pressure is used to reflect the waterproof performance of fabrics. Fabrics with large hydrostatic pressure are highly waterproof, and fabrics with small hydrostatic pressure are weak. Water-repellent fabrics have a strong moisture absorption capacity. They are wet when exposed to water, have no water resistance, and do not produce hydrostatic pressure. In the AATCC 127-2003 test method experiment, take at least three samples with a size and area of 200mm × 200mm along the diagonal direction of the sample to be tested. The water resistance of the two sides of the sample is different. Make a mark and test with (21...

ICI Pilling Box Tester is used to test the pilling performance of wool knitted or wool-like knitted products. The test standards are GB/T4802.3, ISO 12945.1, BS5811,  IWS TM152. ICI Pilling Box Tester Test principle: The sample tube with the test sample is placed in the pilling test chamber, the instrument is started, and the sample is flipped and rubbed in the box body. After the number of rollovers is agreed, the sample is taken out for rating. Sample preparation: (1) Pretreatment: If pretreatment is required, the sample may be washed or dry-cleaned by a method agreed by both parties. (Precaution is recommended to protect the friction surface of the pilling box and the sample tube from residual lubricant or finish on the fabric) (2) Four specimens were cut from the fabric sample, the size was 125 mm*125 mm, and another swatch of the same size was cut as a comparison sample for the rating. Two specimens were folded inward along the longitudinal direction, and two specimens were folded inward along the lateral front surface, and were sewn with a sewing machine at a distance of 12 mm from the side. (3) The suture sample is everted and the front side faces outward. Cut 6mm ports at both ends of the sample tube to remove the sewing deformation. The sample was placed on the polyurethane sample tube and fixed with PVC tape (to ensure that the ends of the polyurethane were 6 mm bare, and the length of the tape should not exceed 1.5 times the circumference of the polyurethane tube). (4) Conditioning. Experiment procedure: (1) Cleaning the pilling box (2) Put 4 sets of good sample tubes into the box, firmly close the lid, and turn the counter to the required number of rotations. (3) Preset rotation number. Number of agreements. In the absence of agreement, the coarse fabric was turned over 7200 rpm and the fine imitation fabric was turned over 14400 rpm. (4) Start the ICI Pilling Box. After the test is completed, take out the sample, go out to suture, and rate the sample.

Pilling Phenomenon: Pilling is the formation of small fiber balls (pellets) on the surface of the fabric, it is caused by wear. Pilling is the tendency of fibers to loosen from the surface of the fabric and form spherical particles of the fibers. Reason of Pilling： 1.Due to Wearing. 2.Due to friction bwtween fabric or clothing and specific parts of the body. 3.Due to soft twist of yarn. 4.Due to too much short fiber. 5.Due to the migration of fibers from the constituent yarns in the fabric. 6.Due to protruding fiber/yarn hairiness. 7.Due to the heat of thermoplastic fibers. Reduce or Minimize Pilling： 1.Through using high twist yarn. 2.Through brushing and cut the fabric surface to eliminate loose fiber ends. 3.Through to using singeing process to reduce the yarn hairness,extend fiber. 4.Through using anti-pilling technical. 5.Through special chemical treatment，Such as adhesive, anti-friction agent. 6.Reduce fiber migration through the AirJet spinning process. 7.Through increase the friction between the fiber. 8.Through increase the linear density of fiber. 9.Through using a lot of thread for per unit length. ICI Pilling Tester pilling test: 1.For this testing. Cut 4 samples which each 5inch*5inch from fabric. 2.Each back of square has marked with 12mm seam.In both two sample,The seam marked parallel to warp direction, and the other two parallel to weft irection. 3.Then fold the sample face to face and stitch the seam on the marking line. 4.It makes the seam of the two samples parallel to the warp, the seam of the two samples parallel to the weft. 5.Each sample is flipped from the inside out，Each ends cut off 6mm to eliminate any sewing distortion. 6.Then install the finished fabric tube on rubber tube.Make sure the tube’s length at each end are same. Each loose end is pasted with polyvinyl chloride (PVC) tape.Make 6mm rubber tube exposed. 7.Put the 4 samples into one pilling box. 8.Then roll the sample in a cork-linging box. 9.The normally number of revolutions is 18000 in testing, it needs 5 hours. ICI Pilling Tester Result Evaluation： 1.Remove the sample from the tube and observe with inclined lighting. 2.Then confirm the sample grade 1 to 5.

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.