The classification of valve bags

1. The paper plastic composite valve bag is made of the plastic woven bag (referred to as the base cloth) as the base material by the tape casting method (the cloth / film / paper composite is three in one);
2. The kraft valve bag is made of kraft (kraft is mainly divided into imported kraft and domestic kraft). The layers of kraft generally varies from one layer to six layers according to the purpose, and the middle can be coated or added with PE plastic film.
3. PE valve bag: commonly known as heavy valve bag, it is made of polyethylene film, and the film thickness is generally between 8-20 wires.
4. Low melting point valve bag: it is made of low melting point polyethylene film. The film thickness is generally between 8-20 wires. It is suitable for large-scale production in the assembly line of chemical enterprises. It can increase less pollution and reduce the labor intensity of workers.
5. Composite material valve bag: it is a new material with the printability of paper and the moisture resistance and firmness of plastic.
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