How to distinguish genuine and fake non-woven bags
The way to distinguish genuine and fake non-woven bags:
1. Water detection method: The non-woven bag price manufacturer introduced that the non-woven bag is placed in water and pressed into the bottom of the water. The non-toxic non-environmental bag has a small specific gravity and can float to the surface, while the toxic non-environmental bag has a large proportion and sinks.
2. Fire detection method: non-toxic polyethylene non-environmental protection bags are flammable, the flame is blue, the upper end is yellow, and drips like candle tears when burning, with white wax smell and less smoke; toxic polyvinyl chloride non-environmental protection bags are not easy to When it burns, it will be extinguished immediately after leaving the fire. The flame is yellow and the bottom is green. It softens and can be drawn, and has a pungent odor of hydrochloric acid.
3. Vibration detection method: grab one end of the non-environmental-friendly bag with your hand and shake it vigorously, and the crisp sound is declared non-toxic; the muffled sound is toxic.
4. Sensory detection method: Non-toxic non-environmental bags are milky white, semi-transparent, or colorless and transparent, flexible, smooth to the touch, and waxy in appearance; toxic non-environmental bags are cloudy or yellow in color and feel sticky.
The printing process of non-woven environmental protection bag price manufacturers:
1. Watermark
It is named after the use of water-based elastic glue as the printing medium, which is more common in textile printing, also called printing. When printing, the color paste and the water-based elastic glue are harmonized. No chemical solvent is needed when printing the plate, and it can be washed directly with water. It is characterized by good tinting strength, strong concealment and fastness, washing resistance, and basically no odor.
2. Lamination printing
Products processed in this way are generally called laminated non-woven bags. This process is divided into two steps, that is, the traditional gravure printing process is used to print the graphic on the film, and then the film with the image printed on the non-woven fabric is laminated by the lamination process. This process is generally used for non-woven environmental protection bags printed with large-scale colorful pictures. Its characteristics are exquisite printing, the whole process is produced by machine, and the production cycle is short. In addition, the product has excellent waterproof function, and the durability of the product is better than that of non-woven bags produced by other processes. The film is available in gloss and matt, and matt has a frosted effect. The disadvantage is that it conflicts with the concept of environmental protection, because the film is difficult to degrade.
3. Thermal transfer printing
Thermal transfer printing belongs to special printing in printing. This method of non-woven bag manufacturers requires an intermediate medium, that is, the graphic is first printed on the thermal transfer film or thermal transfer paper, and then the graphic is transferred to the non-woven fabric by heating by the transfer equipment. The medium commonly used in textile printing is thermal transfer film. Its advantages are: exquisite printing, rich layered version, comparable to photos. Suitable for small area colorful image printing. The disadvantage is that the price is high and the printing cost is high.
