How to distinguish non-woven fabrics with fluorescence

Nowadays, with the improvement of the economic level, our concept of environmental protection is also increasing day by day. Many manufacturers are also optimistic about the development prospects of non-woven bags. They have successively invested in this industry, but in the face of so many non-woven fabrics on the market Bag, how do we distinguish its true and false? Now I have summarized some methods for your reference. If we want to distinguish the authenticity of non-woven bags, we first need to understand several parameters that determine the quality of the product: 　　 1. Everyone who looks at non-woven bags should know that stitching in the process of non-woven bags is very important and cheap In order to save costs, non-woven bags usually only take a single thread when the locomotive is routed, and the employment of inexperienced workers makes the product stitching line not straight or even running. 2. Look at the number of grams of non-woven fabric. The number of grams here refers to the weight of the non-woven fabric in 1 square meter. The heavier the weight, the more non-woven fabrics are used. The thicker and stronger the non-woven fabric is for ordinary enterprises. In order to save costs, most woven bags are suitable for 80 grams of non-woven fabrics. 80 grams of non-woven fabrics can be reused about 10 times. The hand feels thinner. 70 grams can bear 4-5 kg u200bu200bweight, and 80 grams can bear 5-6 kg. Weight, and so on. 3. Look at the non-woven technology. A good quality non-woven bag is not only strong and durable, but also looks good. It is very high-grade when held in the hand. Most non-woven bags on the market use screen printing. Non-woven bags are cheap and have clear lines. In addition to human factors, there is an important indicator that is pigments. Some unscrupulous manufacturers choose inferior dyes, which makes non-woven bags not environmentally friendly and even has a pungent smell. The following is a specific method for you to detect the authenticity of non-woven bags. Method 1: Put the non-environmental protection bag in the water and press it into the bottom of the water. The proportion of non-toxic and non-environmental protection bags is small, which can surface and is toxic Non-environmental protection bags have a large proportion and sink. Method 2: The non-toxic polyethylene non-environmental protection bag is flammable, the flame is blue, the upper end is yellow, and it drips like candle tears when burning, has a paraffin smell, and has less smoke; the toxic PVC non-environmental protection bag is not easy It burns and goes out immediately after leaving the fire. The flame is yellow and the bottom is green. It can be softened and can be drawn. It has a pungent odor of hydrochloric acid.　　Method 3: Shake detection method　　 Grab one end of the non-environmental protection bag with your hand and shake it vigorously. Those with a crisp sound are non-toxic; those with a dull sound are toxic.　　Method 4: Sensory detection method　　Non-toxic non-environmental protection bags are milky white, translucent, or colorless and transparent, flexible, smooth to the touch, and waxy on the surface; toxic non-environmental protection bags are cloudy or yellow in color and sticky to the touch.