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Non Woven Bag The Main Raw Material

Non Woven Bag The main raw material

The main raw material of foreign production is polyethylene (PE), domestic production is mainly polypropylene (PP), which is a thermoplastic resin produced by ethylene. In industry, it also includes copolymer with ethylene and a small amount of alpha-olefin. Polyethylene odourless, non-toxic, feel like wax, has good low temperature resistance (the lowest temperature can reach 70 ~ 100 ℃), chemical stability is good, most of acid and alkali erosion (acid) with characteristics of oxidation resistance, temperature does not dissolve in solvents, small water imbibition, excellent electrical insulation properties; But polyethylene is sensitive to environmental stress (chemical and mechanical action), and it is very resistant to aging. The properties of polyethylene vary from breed to breed, depending on the molecular structure and density. Different densities (0.91 ~ 0.96 g/cm3) were adopted for different production methods. Polyethylene is used in the forming method of general thermoplastic plastic (see plastic processing). It is widely used for making films, containers, pipes, single wire, wire and cable, daily necessities, etc., and can be used as high frequency insulation material for TV, radar and so on. With the development of petrochemical industry, polyethylene production has been rapidly developed, producing about a quarter of the total output of plastic. In 1983, the total production capacity of world polyethylene was 24.65 Mt, and the capacity of building was 3.16 Mt.

Polypropylene (PP)

A thermoplastic resin produced by polymerization of propylene. There are three configurations, such as the isotactic, non-regulatory, and inter-regulation, which are the main components of industrial products. Polypropylene also includes copolymer with propylene and a small amount of ethylene. Usually translucent and colorless solid, odorless and non-toxic. Because of its neat and high crystallization structure, therefore, melting point 167 ℃, heat resistant, products available steam sterilization is its outstanding advantages. Density 0.90 g/cm3 is the lightest general purpose plastic. Corrosion resistant, tensile strength 30MPa, strength, rigidity and transparency are better than polyethylene. The disadvantages are low temperature resistance and low impact resistance, but can be overcome by modification and addition of antioxidant.

Woven bag color is usually white or grey, non-toxic tasteless, to human body harm generally small, although that are made by various chemical plastics, but its environmental protection sex is stronger, and recycling efforts;

Woven bags are widely used for various kinds of articles, which are widely used in industry.

Plastic woven bag is made of polypropylene resin as the main raw material, extruded and stretched into flat wire, and then woven and made into a bag.

The composite plastic woven bag is made of plastic woven fabric, which is composite by ductilium.

Used for packing powdery or granular solid materials and flexible objects. Compound plastic woven bag is divided into two - one bag and three - one bag.

According to the sewing method, it can be divided into stitches, bottom pockets, pockets, and adhesive sewing bags.

The effective width of the bags is divided into 450, 500, 550, 600, 650 and 700mm. The special specifications are agreed upon by both parties.

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