Method 4: Sensory detection method Non-toxic non-environmentally friendly bags are milky white, translucent, or colorless and transparent, flexible, smooth to the touch, and waxy on the surface; toxic non-environmentally friendly bags are turbid or yellow in color and feel sticky. The screen printing non-woven bags are cheap and line. Hiring inexperienced workers makes the product sutures not straight or even running. Method 2:

Fire detection method Non-toxic polyethylene non-environmentally friendly bags are flammable, the flame is blue, the upper end is yellow, and burns like candle tears when burning, there is paraffin smell, less smoke; toxic polyvinyl chloride non-environmentally friendly bags are not flammable, and are extinguished when fire , The flame is yellow, the bottom is green, softening can be drawn, there is a pungent odor of hydrochloric acid. For non-woven fabric bags used by ordinary enterprises for publicity, most of them are cost-saving. To distinguish true and false non-woven bags, we first need to understand a few parameters that determine the quality of the product: 1.

The heavier the non-woven fabric used, the more natural and thicker and stronger. 3. Many manufacturers are also optimistic about the development prospects 3-Layer Face Mask Manufacturers of non-woven bags, and they have successively invested in this industry, but in the face of so many non-woven fabrics on the market Bag, how do we tell whether it is true or not? Now the editor summarizes some methods for your reference. 70 grams can bear 4-5 kg ​​weight, 80 grams can bear 5-6 kg weight, and so on. 2. The non-toxic non-environmental protection bag has a small specific gravity and can rise to the surface.

The feel is relatively thin. See the lathes of non-woven bags Everyone should know that stitching is very important in the process of non-woven bags. It is suitable for 80 grams of non-woven fabrics. Most of the non-woven bags on the market use screen printing. Look at the non-woven process A good quality non-woven bag is not only sturdy and durable, but also very good-looking, and it has a good grade in the hand.