Knowledge of woven bags

Woven bags, also known as snakeskin bags, are made of plastic. One is mainly used for packaging, and its raw materials are generally polyethylene, polypropylene and other chemical plastic raw materials. In other words, it is made of polypropylene (English name pp) as the main raw material, extruded, stretched into flat silk, and then woven, woven and bagged.

For the woven bag, the important parameter is the weaving density, which mainly refers to the number of warp and weft yarn roots in the 100mm×100mm woven fabric. According to the national standard GB/ t8946-1998, “the bag shall be flattened, and two squares of 100mm×100mm shall be delineated at the top and bottom corners of the bag. The outer edge of the box shall be 100mm away from the edge of the bag. The number of longitude and latitude roots of the box shall be visually measured and averaged.

And now the color of woven bag is generally white or off-white, non-toxic and tasteless, generally less harmful to human body, although it is made by a variety of chemical plastics, but its environmental protection is stronger, and the recycling strength is larger. It is mainly used for packing and packing of various articles, and is widely used in industry.

As for plastic woven bag, it is now used more than a woven bag, often used in food packaging, tourism transport, engineering construction and other fields. Its main production process is the use of plastic raw materials through extrusion film, cutting, unidirectional tension into flat wire, through the warp and weft weaving products.

Its main raw material, plastic flat silk is referred to as “flat wire, also have called for cutting the fiber, it is a basic material in the production of plastic woven fabrics, flat wire by certain species of polypropylene, polyethylene resin by melt extrusion film, then, the longitudinal cutting into article, the article also heating after finalize the design draft orientation, winding into flat silk spindles, for weaving braid. According to the main materials for polypropylene bags, polyethylene bags; According to the sewing method is divided into sewn bottom bag, sewn edge bottom bag.