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    Home > Active Ingredient News > Drugs Articles > How to detect the stickiness of band aid

    How to detect the stickiness of band aid

    • Last Update: 2019-06-24
    • Source: Internet
    • Author: User
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    Bandages are used for small, superficial, non sewn cut wounds, abrasions, bruises, scratches, lacerations, etc in the process of use, bandages also encounter various problems However, there are no national standards, industrial standards or local standards for band aids The quality of band aids should be tested according to the requirements of Chinese Pharmacopoeia standards such as YY / T 0471 and YY / T 048 According to the requirements of medical tape and wound dressing, the items that need to be tested are: initial viscosity, holding viscosity, peeling strength, water resistance, elasticity, and extensibility This paper introduces how to test the stickiness of band aid by using the constant temperature stickiness tester of Jinan Sanquan Zhongshi Experimental Instrument Co., Ltd I testing equipment: the constant temperature viscosity tester manufactured by Jinan Sanquan Zhongshi Experimental Instrument Co., Ltd is cny-hs, which can measure the viscosity by simulating the constant temperature of human body, increasing the persuasiveness of the experimental results Detection range: it is applicable to the viscosity test of various high temperature tapes, medical tapes, pressure-sensitive adhesive tapes, self-adhesive labels, waterproof rolls, pastes, pastes and other products at a certain temperature Technical parameters; standard pressing roller: 2000g ± 50g weight: 1000g (200g, 500g optional) test plate: 60 (L) × 40 (W) × 1.5mm optional other timing range: 0 ~ 9999.99h temperature control range: room temperature + 5 ℃ -- 200 ℃ temperature control error: ± 1 ℃ timing range: 0 ~ 9999.9h station Number: 6 stations (optional for 10 stations) overall dimension: 900mm × 550mm × 750mm (length, width and height) weight: 40kg II Test principle 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 capacity 3 Test method 1 Contact the adhesive surface of one end of the prepared band aid sample with the clean surface of the stainless steel plate, so that the whole width of the end of the band aid sample is aligned with the place 25 mm from the end face of the steel plate, and the two sides of the sample are parallel to the long side of the steel plate The unbonded end of the specimen is suspended outside the end face of the steel plate When pasting the specimen, make sure that there is no bubble between the specimen and the steel plate, apply pressure to the pasted part of the specimen with a roller, roll it four times along the length direction of the specimen at a speed of about 60cm / min, and make it park for 10min under the standard atmospheric pressure 2 Make a marking line at the end line of the band aid sample, and stick a heavy object at the hanging end of the sample according to the width of 0.8N (80g) per cm The force shall be evenly distributed with the whole bandwidth 3 Hang the steel plate in a 360C - 38 ℃ hot air oven for 30 min, so that the steel plate is 2-inclined to the vertical surface, so as to prevent the specimen from peeling off from the steel plate, and make the weight hang 4 Repeat this step for the other 4 samples 5 For a band aid product with great elasticity, stick a non extensible adhesive tape of the same width between the applied gravity and the sample When testing the elastic adhesive bandage of hydrogen dioxide products, the elastic wire should be in the width direction of the steel plate, and the load should be applied to the non elastic wire direction In this case, the test can only be carried out when the sample width is at least 25m m If the width of the tested material is 25m m, a section of non elastic adhesive tape (about 60mm long and the same width as the sample) shall be pasted on the sample to make the non pasted part of the tape hang on the end of the stainless steel plate, so as to make it bear even force when hanging heavy objects In summary, the constant temperature sticking tester developed by Jinan Sanquan Zhongshi Experimental Instrument Co., Ltd for cny-hs meets the requirements of GB 4851, YY / t0148, GB / T 23260 and other standards, and has the advantages of economic and practical, beautiful appearance, humanized design and accurate experimental results.
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