Vacuum-packed bags of rice, whole grains vacuum bag, vacuum nylon bags are generally, that one, two or more of the base film (heat sealing PE film, CPP, BOPP) and nylon (airtight better) or PET film special glue bonding through economic (chemical products) through complex machine composite film. And then the cut bags made of vacuum after sealing performance is the best. Air barrier performance, oxidation resistance, waterproof, moisture and strong mechanical properties, high blasting performance, strong anti-puncture tear resistance, high temperature (121 ℃), low temperature (-50 ℃). Non-toxic, tasteless line with national standards. Good heat sealing properties, good transparency. Physical Characteristics and Standards: Item Unit distinguishing index value of the reference standard tensile strength Mpa MD / TD 220 * 310 ASTM-D882 Elongation% MD / TD 125 * 72 ASTM-D882 30 minutes to be oxygen transmission rate cc / m day 20 ~ 40 ASTM-D3985 water vapor transmission rate g / m day 510 * 557 ASTM-B95 Note: due to different measurement and measurement by instrument, the data may be different, (measurement conditions: 23 ℃, 50% RH) TD: Portrait MD: lateral Products mainly applicable to all types of PC boards, IC integrated circuits, optical drives, hard drives, LCD monitors electronic components, various types of food vacuum packaging. Specifications: Size can be customized scope of products and industrial products industries in accordance with customer demand: welding materials, electronic products, circuit boards and other vacuum food packaging: rice, meat products, dried fish, aquatic products, sausages, roast duck, chicken, pork, frozen food, ham, bacon products, sausages, cooked meat, pickles, bean paste, spices and other polyethylene plastic bags, plastic products, the amount of the largest and most important materials, is currently the world's best materials in contact with food bags, food bags on the market generally is made of this material. Polyethylene light and transparent, with the ideal moisture, oxidation, acid and alkali, heat sealing and other advantages, and non-toxic, tasteless, odorless, food packaging hygiene standards. Second, PVC / PVC, is second only to polyethylene plastic world's second-largest species, are plastic bags, ideal for PVC bags, composite bags, vacuum bag to be used for books, folders, Ticket and other cover packaging and decoration.