Water vapor transmission detection of transparent wound dressings (permeable membrane dressings)
Abstract: Transparent wound dressing (permeable membrane dressing) must have good water permeability and venting function, so that the wound maintains high humidity, slightly acid and low oxygen environment to promote its rapid healing; therefore, its water vapor transmission rate is the production enterprise. Strictly controlled indicators. Of course, after ensuring that the water vapor transmission rate index of the transparent wound dressing (permeable membrane dressing) is qualified, it is necessary to control other indicators such as gas permeability, mechanical strength, and tissue compatibility to ensure its quality and use. Adaptability. For more information about related instruments, check the specific information. Jinan Languang Electromechanical Technology Co., Ltd. is willing to enhance exchanges and cooperation with enterprises and institutions in the industry. Surgical Oxidized Regenerated Cellulose Hemostatic Material Cellulose,Oxidized Regenerated Cellulose,Surgical Oxidized Regenerated Cellulose,Oxidized Regenerated Absorbable Cellulose Shaoxing Aladdin Enterprise Co.,Ltd , https://www.xhemostat.com
Key words: transparent wound dressing (permeable membrane dressing), water vapor transmission test, water vapor transmission rate tester, water permeability test
text:
Exposed wounds need to be covered with dressing to protect the environment that is conducive to wound healing and tissue repair. Wound healing is an important prerequisite for the recovery of post-trauma body function. Therefore, with the rapid development of modern science and technology and multi-functionality The birth of the product, the traditional gauze dressing from the simple covering effect can not meet the needs of modern clinical, and then there is a new material such as transparent wound dressing (permeable membrane dressing), which not only can fully protect the wound, but also promote tissue repair, antibacterial Sterilization and accelerated wound healing are in line with the direction of modern medical development. Transparent wound dressing (permeable membrane dressing) must have good water permeability and venting function, so that the wound maintains high humidity, slightly acid and low oxygen environment to promote its rapid healing; therefore, its water vapor transmission rate is strictly controlled by various production enterprises. index of. Labthink followed by a W3/060 water vapor transmission rate tester to briefly describe the water vapor transmission of transparent wound dressings (permeable membrane dressings).
First, transparent wound dressing (permeable membrane dressing) water vapor transmission detection significance
Skin is a barrier to maintain homeostasis and prevent microbial invasion. Many local and systemic infections that occur after trauma are always associated with loss of skin barrier. Transparent wound dressing (permeable membrane dressing) can seal the wound as soon as possible, reduce the infection caused by wound pathogens and improve the survival rate of severe wounds. If the water vapor transmission rate of the osmotic wound dressing is too high, it is not easy to maintain the wet environment of the wound; if the water vapor transmission rate is too low, it will affect the normal metabolism of the body. Therefore, each manufacturer must control its water vapor transmission rate to a suitable value. 
Second, transparent wound dressing (dressing permeable membrane) water vapor transmission rate of water vapor detection reference YY / T0471.2 "wound dressing Test Method (permeable film dressing) <br> transmission amount detecting method of a transparent wound covering - Part 2 : Water vapor transmission rate of the breathable film dressing, that is, at a certain temperature, a specific humidity difference is formed on both sides of the sample, and the water vapor passes through the sample to enter the dry side, and the weight of the moisture permeable cup is determined by The amount of change in time is used to obtain parameters such as the water vapor transmission rate of the sample. Labthink's W3/060 water vapor transmission rate tester uses a high-precision load cell to improve test accuracy and effectively shorten the judgment time of the permeation balance during the test, thereby effectively shortening the entire test time. Secondly, the temperature and humidity control technology and the weighing technology are combined with the computer control technology to achieve the test weighing in the test environment, without manual intervention, so that the test process is completely free from external influences, the test results are more accurate, and the aluminum foil is completely satisfied. Requirements for moisture permeability testing of high resistance materials. In addition, the instrument's six-chamber independent test design greatly improves the detection efficiency and meets the testing needs of different customers.