Luohe bags

Bags, also known as snakeskin. It is a plastic, packaging, the raw material generally polyethylene, polypropylene and other plastic materials chemistry. Raw plastic woven noun: woven main terms: Plastic bags are polypropylene (English pp) as the main raw material, extrusion, stretched into flat yarn, and then weaving, the preparation, the bag is made. Woven density and density tolerance Definition: weave density means within 100mm × 100mm knits, warp and weft of the number of national standards GB / T8946-1998 stipulates that "; flatten the bag on the bag, the next two to When the corner delineation of 100mm × 100mm two blocks, block away from the outside edges of the bag 100mm, warp and the number and averaged visual box, count when finished last less than one point, according to a plan, "; National Standards specified in the weave density while. Tolerances specified density, weave density depends packaging products, determined by the user. Commonly used density woven 根 36 × 36 / 10cm, 40 × 40 根 / 10cm, 48 × 48 根 / 10cm. 1, weave density tolerance: weaving density is the ratio of a given tolerance standard weave density or reduce the number of multiple flat yarn. 2, the quality of woven fabric per unit area: woven square meter basis weight is expressed as the number of grams of weight, it is woven an important technical indicators. Weight per square meter depending on the number of warp and weft density and thickness of the flat wire, square meter weight in grams of the impact tensile strength woven cloth, load capacity, weight per square meter company control number is a major part of the cost. 3, woven tensile load: tensile load, also known as tensile strength, tensile strength, tensile load for weaving Booker bear both the warp and weft directions, so that the warp and weft tensile load. 4, width: Width of various woven bag directly affect the process, the barrel off after indicating width cloth, folded by the equivalent of half the circumference. Width retraction, all woven weaving width after coiling, in unrolled cutting, printing, stitching, made of the width of the bag to be slightly smaller than the width of coiling, we call width retraction. 5. PP Flat Yarn knitted feel more solid feel, very wide, stiff some; HDPE flat yarn woven fabric feel soft, smooth, not tight; calcium compound added in PP Flat Yarn masterbatch, feel quite wide, PP in HDPE will make it less add some soft Biansi narrow woven flat, soft, flat wide, when woven silk folds more, feel rough. Types of foreign production mainly polyethylene (PE), polypropylene domestic production of major (PP), is a thermoplastic resin polymerized ethylene obtained. In the industry, but also copolymers of ethylene with minor amounts of α- olefins. Polyethylene odorless, non-toxic, feel like wax, has excellent low temperature properties (lowest service temperature up to -70 ~ -100 ℃), good chemical stability, resistance to most acid-base corrosion (intolerance with oxidation properties The acid), room temperature, soluble in common solvents, water absorption, excellent electrical insulation properties; but polyethylene for environmental stress (chemical and mechanical action) is very sensitive, heat aging poor. Polyethylene nature because of different varieties, depending on the molecular structure and density. Using different production methods can be of various density (0.91 ~ 0.96g / cm3) of the product. Generally available polyethylene thermoplastic molding method (see plastics processing) processing. Wide range of uses, mainly used to manufacture film, containers, pipes, monofilament, wire and cable, and other daily necessities, and as television, radar and other high-frequency insulating material. With the development of petrochemical industry, polyethylene production and rapid development, production accounts for about 1 / 4.1983 world total production capacity of polyethylene plastic total of 24.65Mt, the construction unit capacity of 3.16Mt. Polypropylene (PP) prepared by the polymerization of propylene a thermoplastic resin. There was isotactic, syndiotactic and random thing was three configurations, industrial products and other regulations as main ingredient. Also includes a small amount of polypropylene and ethylene propylene copolymer included. Usually translucent colorless solid, odorless non-toxic. Due to regular and highly crystalline structure, so the melting point of up to 167 ℃, heat, steam sterilization products available is its advantage. Density of 0.90g / cm3, is the lightest general-purpose plastics. Corrosion resistance, tensile strength of 30MPa, strength, rigidity and transparency better than polyethylene. The disadvantage is poor low temperature impact resistance, easier to aging, but can be modified to be overcome and the addition of antioxidants, respectively. Woven color is generally white or off-white, non-toxic and tasteless, bodily injury is generally small, although it is made by a variety of chemical plastic, but its strong environmental protection, and recovery of larger effort; very versatile bags : mainly used for various items into a loading and packaging, widely used in industry; plastic bags are polypropylene resin as the main raw material, extruded, drawn into flat yarn, and then weaving, bag from . Composite plastic woven bag is woven plastic as the substrate, after casting a composite made of. This series of products for the packaging of powdered or granular solid material and flexible articles. Composite plastic bags by major material into triple combo bags and bags. Press into bottom seam bags sewing method, seam bottom bags, pocket, and bonding sewing bag. Press the effective width of the bag into 450,500,550,600,650,700mm, special specifications agreed upon by both parties. Application 1, agriculture, industrial goods packaging Currently, the products and the price of resources, China's annual 6 billion bags used for packing cement, accounting for over 85% of bulk cement packing. With the development and application of flexible container bags, plastic woven bags are widely used in maritime container, transport packaging industrial and agricultural products, agricultural products packaging, plastic bags now widely used in the packaging of aquatic products, poultry feed packaging, aquaculture covering materials field, the crops planted shade, wind, hail and other materials shed. Typical products: feed bags, chemical bags, putty powder bags, urea bags, mesh bags of vegetables, fruit mesh bags, 2, food packaging in recent years rice, flour and other food packaging, the gradual introduction of woven bag. Common bags are: rice bags, flour bags, corn bags and other bags 3, geotechnical engineering since the 1980s to develop geotextiles and broaden the application field of plastic braid, widely used for small water conservancy, electricity, roads, railways, harbors, mining construction and military construction projects. In these projects, geosynthetics have filtration, drainage, strengthen, isolation, seepage and other functions, it is a synthetic plastic geotextile geotextile material. 4, tourism transport tourism in makeshift tents, umbrellas, a variety of bags, travel bags, plastic woven applications have a variety of tarpaulin covering materials are widely used in transportation and storage, replacing the easy rotten heavy cotton woven tarpaulin. Construction of the fence, nets, etc. are also widely used in plastic braid. Common are: logistics bags, logistics bags, cargo bags, cargo bags. 5, daily necessities workmanship, farming, shipping, and no one need not go to the market of plastic woven products, store, warehouse, their homes and in everywhere plastic woven products. Carpet pad material is also substituted plastic braid. Such as shopping bags, shopping bags, supermarket shopping bag; bags for logistics and freight transportation, logistics bags. 6, not a lack of flood relief supplies flood bags, building dams, river banks, railways and roads are also not missing bags. Is the anti-hearing bags, bags drought, flood bags! 7, special woven some industries due to special factors, the need to use less than the usual number of bags, such as carbon black bags. Carbon black bags greatest feature: the sun. Carbon black is woven with strong sunscreen capacity than ordinary bags, woven of a common long-term sun exposure can not stand the sun. There are anti-UV bags: with UV protection function, has anti-aging effect!