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Detection method of water absorption rate of sanitary napkin

Date: 11:00, December 23, 2021
Views: 1581
Abstract: sanitary napkin and sanitary pad are important sanitary products for women, which require strong absorption capacity. In the current product standard sanitary napkins (including sanitary pads) (gbt8939-2008), the water absorption ratio is a quality index to measure the absorption capacity of sanitary napkins. The greater the water absorption ratio is, the stronger the absorption capacity of the product is.

Detection method of water absorption rate of sanitary napkin

 

Sanitary napkins and pads are important sanitary products for women, which require strong absorption capacity. In the current product standard sanitary napkins (including sanitary pads) (gbt8939-2008), the water absorption ratio is a quality index to measure the absorption capacity of sanitary napkins. The greater the water absorption ratio is, the stronger the absorption capacity of the product is. Therefore, the water absorption rate is also an important technical index to control the quality of sanitary napkins. Sap is a typical functional polymer material. The amount of SAP directly affects the water absorption rate of sanitary napkin. Testing the water absorption rate of sanitary napkin can not only monitor the absorption capacity of the product, but also control the amount of SAP added. In order to ensure the quality of the product, in the production process, the water absorption ratio is generally tested every 20-30 min. Today, according to the requirements of national standard "sanitary napkin (including sanitary pad)" (gtb8939-2008), we elaborate the specific test methods in detail.

 

  Detection method of water absorption rate of sanitary napkin

Test method: weigh the weight of sanitary napkin before suction, clamp one end of the sample for sealing, and make the clamp mouth and the sample in a vertical state, and do not clamp the internal absorption layer. Immerse the sample together with the clamp in about 10cm deep distilled water, with the use side of the sample facing upward, gently press the sample to immerse it for 60s, then lift the clamp to make the sample completely away from the water surface, hang it vertically for 90s, and then weigh its weight, Then calculate the water absorption ratio according to the calculation formula: water absorption ratio = (weight after absorption - weight before absorption) / weight before absorption. Test 5 samples according to the same method, and take the average value of 5 tests as the measurement result, * * to one decimal place.

 

  Detection method of water absorption rate of sanitary napkin

Although this method is simple, if it is used in production line sampling inspection, the workload will be very large and the efficiency will be very low. Wsj-xs05 water absorption rate automatic tester is commonly used in the industry to test the water absorption rate. Wsj-xs05 water absorption rate automatic tester is developed according to the relevant standards of sanitary napkins, diapers, pads, non-woven fabrics and other products. It is specially used to test the water absorption index of water absorbing materials such as sanitary napkins, diapers, sanitary pads and non-woven fabrics. The machine adopts automatic detection mode, which saves time and effort.