[Dry goods] How to check the quality of non-woven fabrics?

Non-woven fabrics are now widely used by people. What is better than plastic bags? Non-woven fabrics are stronger than plastic bags and more environmentally friendly than plastic bags. Most middle-aged and elderly people love it, and now there are more and more styles of non-woven bags, and they are getting better and better. So how to test the quality of non-woven fabrics? 　　Take non-woven handbags as an example to talk about the quality test method: 　　1. Material requirements inspection Check the non-woven bag material qualification certificate.　　2, sensory inspection　　(1) Color Visually inspect the color of the non-woven bag under natural light.　　(2) Peculiar smell Use the sense of smell to identify the smell of non-woven bags.　　 3. The appearance quality inspection of non-woven bags is visually inspected under natural light and inspected by visual hand feel method.　　4. Dimensional deviation inspection uses a measuring tool with an graduation of 1mm to measure the non-woven bag.　　5. Inspection of non-woven bag sewing requirements　　(1), sewing appearance Spread the non-woven bag flat on the inspection table with a ruler to measure and visually inspect.　　(2). The stitch density is measured with a ruler and the length of each 3cm part is counted.　　(3) The seaming strength of non-woven bags shall be carried out in accordance with the regulations of GB/T 3923.1-1997. Take a sample on a non-woven bag with a length of 300mm and a width of 50mm. Sewing the sample at both ends of the suture should retain 4 stitches of suture length and tie the ends to prevent the suture from falling off.　　6. u200bu200bPhysical and mechanical properties inspection　　(1) The breaking strength shall be carried out in accordance with the provisions of GB/T 3923.1-1997. Sampling on a non-woven bag, the sample is 300mm long and 50mm wide. 　　 (2) Non-woven bag lifting test machine uses a bag fatigue tester, amplitude 30mm±2mm, frequency 2Hz~3Hz. The test will be equivalent to the table 3 Load the simulant with nominal load (such as sand, rice grains, etc.) into a non-woven bag, and then hang it on the testing machine for 3,600 tests to observe whether the non-woven bag body and the carrying strap are damaged. The number of trials is three. In the drop test, put the simulant (such as sand, rice grains, etc.) equivalent to the nominal load in Table 3 into a non-woven bag, seal the mouth with tape, and fall freely at a height of 0.5m from the bottom of the bag. The test ground should be flat On a hard floor, observe whether the non-woven bag body is damaged. The number of trials is three.　　Non-woven fabric, non-woven fabric manufacturer, Non-woven fabric Co., Ltd. is worth your trust!　　Welcome to call the customer service hotline: Previous post: What are the main uses of non-woven fabrics?