Many customers through our website to telephone advice on the popularity of woven bag types, then today DongLai woven bag Xiaobian to explain the popularity of woven bag types.
Types of woven bags
Woven bags are also called snakeskin bags. It’s a kind of plastic, mainly used for packaging. The raw material is generally polyethylene, polypropylene and other chemical plastic raw materials. Here is a brief introduction to the type of woven bag and use.
Polyethylene is the main raw material of foreign production, polypropylene is the main product of domestic. It is a thermoplastic resin made by polymerization of ethylene. In industry, it also includes copolymers of ethylene with a small amount of α-olefin. Polyethylene is odorless, non-toxic, waxy, has excellent low temperature resistance (minimum operating temperature up to -70 ~ -100 ℃), good chemical stability, most acid and alkali corrosion resistance (acid resistance, oxidation), insoluble in general solvents at room temperature, low water absorption, excellent electrical insulation performance; However, polyethylene is very sensitive to environmental pressures (chemical and mechanical effects) and has poor resistance to heat aging. The properties of polyethylene vary from variety to variety, mainly depending on the molecular structure and density. Different production methods can yield different densities (0.91-0.96g/cm3). Polyethylene can be processed in the same way that ordinary thermoplastic plastics are moulded (see Plastic processing). Widely used in the production of film, containers, pipelines, single wire, wire and cable, daily necessities, etc. It can be used as high frequency insulation material for TV, radar, etc. With the development of petrochemical industry, polyethylene production has developed rapidly, accounting for about 1/4 of the total plastic production. In 1983, the world’s total production capacity of polyethylene was 24.65 metric tons, and the plant under construction had a capacity of 3.16 metric tons.
Polypropylene (PP)
A thermoplastic resin made by polymerization of propylene. There are three types of configurations, namely, fully isotopic, atactic and indirect. Industrial products are mainly composed of isotopic structures. Polypropylene also includes a copolymer of propylene and a small amount of ethylene. It is usually a translucent, colorless solid, odorless and non-toxic. Because of its structure rules, high crystallinity, melting point up to 167 ℃, heat resistance. With a density of 0.90g/cm3, it is the lightest versatile plastic. Corrosion resistance, tensile strength 30MPa, strength, rigidity and transparency are better than polyethylene. The disadvantage is low temperature impact resistance is poor, easy to aging, but can be modified and added antioxidant to overcome.
The color of woven bag is white or off-white generally, non-toxic and tasteless, the harm to human body is generally smaller. Although made of a variety of chemical plastics, but strong environmental protection, recycling strength;
Woven bag is widely used, mainly used for packaging a variety of goods, and widely used in industry;
Plastic woven bag with polypropylene resin as the main raw material, extrusion and stretch into flat thread, and then woven into a bag.
Composite plastic woven bag with plastic woven cloth as the base material, through the flow molding.
Used for packing powder or granular solid materials and flexible articles. Composite plastic woven bag is divided into two in one bag and three in one bag according to the main material composition.
According to the sewing method, it can be divided into sewing bottom bag, sewing side bottom bag, inserting bag and glue-coated sewing bag.
Depending on the effective width of the bag, it can be divided into 450, 500, 550, 600, 650 and 700 mm. Special specifications shall be agreed upon by both parties.
Above is the popularity of small make up for all types of finishing of woven bag related consulting, through the sharing of content, to the popularization of woven bag types have certain cognitive, if you want to go deeper into the bag of market information, can contact the salesman in our company, or to the east and woven bag on-the-spot investigation, mutual communication is discussed in this paper.
Post time: Jan-15-2021