What are the practical testing instruments for band aid

The functional test of band aid is simply to say whether it is well glued It is mainly manifested in whether the stickiness of the band aid is sufficient, whether the stickiness of the skin is appropriate, and whether it can adapt to the corresponding sterilization methods The following is a brief introduction of the equipment required for the functional test of the band aid by Jinan Sanquan Zhongshi Experimental Instrument Co., Ltd.: the constant temperature stickiness tester chy-hs I, the constant temperature stickiness test of the band aid; 1 Test item: whether the adhesive of the band aid is enough The adhesive of the band aid means that when the tape needs to paste the material with the skin, the tape should be able to stick firmly on the skin surface However, there is a temperature in the skin, and the glue molecules are affected by the temperature, so the experimental process needs a constant temperature experimental environment 2 Testing equipment: the bandage constant temperature viscosity tester chy-hs of Jinan Sanquan Zhongshi Experimental Instrument Co., Ltd medical tape is pasted on the human body, so the standard requires that the viscosity test be carried out in an oven at 36 ℃ - 38 ℃, and the viscosity is relatively sensitive to temperature If the experiment is carried out at room temperature or at low temperature, the test results will be quite different 3 Test method: set a constant test temperature, hang the adhesive test plate with the specimen vertically on the test stand, hang the weight of the specified weight at the lower end, and use the displacement of the specimen after a certain time or the time when the specimen completely disengages to characterize the adhesive force The experimental results take the arithmetic mean value, then find the appropriate inverse logarithm, and get the time Blj-c 2, band aid peel strength test 1 Test item: whether the adhesion of band aid to the skin is suitable for testing Because most medical tapes need to be pasted on the skin, they should have the appropriate adhesion, rather than the stronger the better the adhesion 3M clinical research department evaluates the strength and applicability of the adhesive tape to the skin by testing the peel strength of the tape on the skin The standard YY / t0148 General requirements for medical adhesive tape specifies the peel strength test of band aid 2 Testing equipment: Jinan Sanquan Zhongshi Experimental Instrument Co., Ltd develops a 180 ° peel tester blj-c according to the requirements of national pharmacopoeia 2015 and YY / t0148 standard The standard requires that the test be pasted on the center of the clean surface of the stainless steel plate so that both sides of the sample are parallel to the two long sides of the steel plate Apply a roller to the adhesive part of the specimen, and roll it four times along the length of the specimen at a speed of about 60cm / min Special ygj-s electronic roller tester is also needed to make samples here 3 Test method for peel strength of Band Aid: clamp the prepared sample on the peel tester, fold the free end of the sample 180 ° in half, and peel off the bonding surface from the test plate about 25 mm Fix the free end of the sample and the test plate on the fixture respectively, so that the peeling surface is consistent with the force line of the testing machine; the force value sensor records the force value during the peeling process, and then divides by the peeling width of the sample, which is the final peeling strength of Zui Test items: whether it can adapt to the corresponding sterilization method, different sterilization methods have different effects on the product performance, and selecting the materials suitable for the product sterilization method is an important part of product design It is required that the band aid should have barrier outer structure, prevent microorganism invasion, prevent wound cross infection, etc 2 Testing equipment: the band aid water resistance tester zs-02 is specialized in water resistance testing of band aid, gauze, cotton pad, synthetic fiber and other products 3 Test method: (1) the prepared sample shall be free of wrinkles (2) fill the tank with purified water at (21 ± 2) ℃ (3) place the sample on the lower ring by sliding horizontally to avoid air between the water surface and the lower surface of the sample (4) cover the upper surface of the sample with a dry filter paper larger than the test area, put on the upper ring, and clamp it with a threaded device (5) fill the pipe with water to the required level above the sample surface (6) maintain the hydrostatic pressure for (300 ± 10) s 2.7 check whether there is water seepage through the sample on the filter paper and record the results The above information comes from Jinan Sanquan Zhongshi Experimental Instrument Co., Ltd for water resistance tester zs-02, 180 ° stripping tester blj-c and constant temperature viscosity tester chy-hs, please call Sales Department of Sanquan Zhongshi.