Shanghai Daoqin Plastics Co., Ltd.

         blow molding product is in 空; injection molding is has injection molding 口, therefore molding rear product more small fast need separation, has 道工序 it 剪掉, if fine also is can 发现;

         injection molding (injection molding) is make thermoplastic property or hot solid property plastics in add hot material in uniform 塑化, rear 由柱塞 or screw to combined mold mold cavity in molding types methods.

         injection molding suitable for has thermoplastic property plastics. in recent years, injection molding formed used for molding certain hot solid property plastics. injection molding molding cycle short (几秒 to separation 钟), molding products quality can 由几克 to 几十千克, can one-time molding outer complex, dimensions 精确, belt/tape has metal or non metal parts product. therefore, methods property strong/high, production efficiency high.

         blow molding: gas pressure make combined in mold in hot type 坯吹胀 formed is in products, or tube/pipe type 坯无模吹胀 formed tube/pipe film types methods. methods main/primary used for various packaging container and tube/pipe film manufacturing.

        凡 is melt is 0.04~1.12 都 is comparison excellent in blow molding material, polyethylene (PE), polyvinyl chloride (PVC), polypropylene (PP), polystyrene (PS), thermoplastic polyester, polycarbonate (PC), polyamide (PA), acid fiber and poly shrink aldehyde resin and other, its in polyethylene (PE) application most more.

        (1) injection blow molding: use injection molding method will plastics made formed has type 坯, again will type to blow molding in made formed in products.

        (2) extrusion blow molding: use extrusion method will plastics made formed has type 坯, again will type to blow molding in made formed in products.

        (3) tensile blow molding: tensile blow molding is di toward tensile types blow molding, its methods is will type also 进行纵 toward tensile, rear use pressure shrink gas 进行吹胀达 to toward tensile. tensile blow molding can make products transparent property, impact strong/high degree, surface hardness and rigid property has very large improve/increase, suitable for polypropylene (PP), polyethylene terephthalate (PET) (PETP) blow molding.

        (4) blow molding film method: molding thermoplastic property film types methods. use extrusion method will plastics formed tube/pipe, rear toward tube/pipe inner 吹入 空 gas make its 连续膨胀 to dimensions tube/pipe film, cooling rear 折叠卷绕 formed di film.