Product Description
A plastic bag, packaging, and its raw materials are generally polyethylene, polypropylene plastics and other chemical raw materials;
Mainly in terms of bags: Plastic bags are polypropylene resin as the main raw material, by extrusion, stretching into a flat wire, and then by weaving, bag is made.
Foreign production is mainly polyethylene (PE), mainly for domestic production of polypropylene (PP), is obtained by polymerization of ethylene as a thermoplastic resin. In industry, but also a small amount of ethylene and α-olefin copolymers. Polyethylene odorless, nontoxic, feel like wax, with excellent low temperature resistance (minimum temperature up to -70 ~ -100 ℃), good chemical stability, the ability of most of the acid-base erosion (impatience with antioxidant properties acid), not soluble in common solvents at room temperature, water absorption, excellent electrical insulation properties; but polyethylene for environmental stress (chemical and mechanical action) is very sensitive, heat aging poor. Polyethylene due to the nature of different varieties, depending on the molecular structure and density. Using different production methods can be of different density (0.91 ~ 0.96g/cm3) product. Polyethylene thermoplastic molding generally available methods (see plastic processing) processing. Wide range of uses, mainly used to make films, containers, pipes, single-wire, wire and cable, daily necessities, and as a television, radar and other high-frequency insulation. With the development of petrochemical industry, the rapid development of the production of polyethylene, plastics production output accounts for about 1 / 4. 1983 is the world's total production capacity of polyethylene 24.65Mt, plant capacity is under construction 3.16Mt.
Polypropylene (PP)
Obtained by the polymerization of propylene and a thermoplastic resin. With other regulatory matter, random objects and materials between the three kinds of configuration rules, regulations and other objects of industrial products as the main ingredient. Also includes a small amount of propylene and polypropylene copolymers, including ethylene. Usually translucent colorless solid, odorless non-toxic. The regular structure and a high degree of crystallization, so the melting point of up to 167 ℃, heat, steam sterilization products can be highlighted is its advantages. Density 0.90g/cm3, is the lightest of the common plastic. Corrosion resistance, tensile strength of 30MPa, strength, rigidity and transparency better than polyethylene. The disadvantage is the poor low-temperature impact resistance, easy to aging, but can be antioxidants were added through the modification and to be overcome.
Bag color is generally white or off-white, non-toxic and tasteless, bodily injury is generally small, though made by a variety of chemical plastics, but its strong environmental protection, and recovery efforts is relatively large;
Bag is widely used, mainly for the various items into the loading and packaging, widely used in industry;
Plastic bags are polypropylene resin as the main raw material, by extrusion, stretching into a flat wire, and then by weaving, bag is made.
Composite plastic woven bag is plastic woven to the substrate, by casting method composite made of.
This series of products for packaging powder or granular solid materials and soft goods. Composite plastic woven bags Combo by major material composition is divided into bags and triple bag.
Methods are divided into the bottom seam by sewing kits, sewing the bottom edge of bag, in my pocket, adhesive sewing bag.
Ordinary bags Specification: 30cm-120cm wide, unlimited length can be ordinary printing, color printing.
Scope of application of plastic bags
1, vegetables and other agricultural products, packaging, and then replaced after the paper Sacks for packing cement.
Currently, the prices of resources and products, China 6 billion each year for cement packaging bags, packaging of bulk cement accounted for more than 85%. With the development and application of flexible container bags, plastic woven bags are widely used in container maritime, transportation, agricultural and industrial packaging products, packaging of agricultural products, plastic bags are now widely used for packaging fish, poultry feed, packaging, farms covering material, crop planting shade, wind, hail and other materials shed . Common Products: feed bags, chemical bags, woven bags, putty powder, urea bags, mesh bags of vegetables, fruit mesh bag, etc.
2, food packaging:
In recent years, rice, flour and other food packaging gradually woven bag used. Common bags are: rice bags, flour bags, maize bags and other bags
3, Geotechnical Engineering:
Development of geotextiles from the 80's has broadened the application field of plastic fabric, widely used for small water conservancy, electricity, roads, railways, ports, mining construction, military construction projects. In these projects, with a filter geosynthetics , drainage, strengthening, isolation, seepage and other functions, plastic geotextile is a synthetic geotechnical materials.
4, Travel & Transport:
Tourism in the temporary tents, beach umbrella, a variety of bags, travel bags, all plastic knitting applications, all kinds of tarpaulin are widely used for the transport and storage of the covering material, replacing the easy-to-rotten heavy cotton tarpaulin. construction fence and a hood, also widely used in plastic braid. common are: logistics bags, bags of logistics, freight bags, cargo bags, etc.
5, daily necessities:
Work, and farming, and goods, no do not go to the market of plastic woven products, store, warehouse, home care, the plastic woven products everywhere. Fiber carpet cushion materials are also being replaced by plastic fabric. If shopping bags, supermarket shopping bags, supermarket shopping bag; for freight logistics and transport bags, logistics bags.
6, flood material:
Not woven the lack of flood relief. Embankments, river banks, railway, highway construction are also not missing bags. Is to prevent hearing bags, woven bags, drought, flood bags!
7, special bags
Some of the industry due to special factors, need to use some of the bags less than usual, such as carbon black bag. The greatest feature of black bags: sunscreen. Carbon black is woven bags than the average capacity of a strong sunscreen, a bag can not stand the sun normal long-term sun exposure. There are UV resistant bags: with anti-ultraviolet function, has anti-aging function!
