Processing: HDPE for extrusion blow molding generally has a broad to wide molecular weight distribution range with a melt flow rate below 1 g/10 min. The low melt flow rate allows the parison to have good melt strength, which can change the self-weight of the parison sagging; wide molecular weight distribution can reduce the die pressure, reduce the breakage of the parison melt, improve the processing performance, and increase the speed. Injection-blown HDPE should have a broad to wide range of molecular weight distributions with melt flow rates above 1 g/10 min. If a cosmetic bottle or shampoo bottle is produced by injection-blow molding, HDPE with a narrow molecular weight distribution range can be used; or a small amount of lubricant (0.1% to 0.5% stearic acid, etc.) can be added to improve the surface roughness of the bottle. . Advantages: Stiffness, strength, hardness, creep resistance, gloss and resistance to moisture permeability are high, and resistance to oil, grease, acid, and cesium is good. Has good impact toughness, electrical insulation, tear resistance, low temperature resistance, but not as good as LDPE. Disadvantages: Impermeability of O2 and CO2 is poor and can be destroyed by strong oxidants. Generally, HDPE has poor transparency, poor flexibility, thermal oxygen aging, and poor photoaging properties. General-grade HDPE containers contain stress and cracking when used for long-term loading of detergents and oils. Therefore, special grades of HDPE should be used. Uses: Widely used in the production of various containers, whose containers can be hot-filled and retort-sterilized; they can be used as a packaging for various acids, enamels, salt solutions and organic solvents and other chemical industries; they can also be used as moisture-proof packaging. In addition, HDPE can also make other industrial parts. Stainless Steel Kitchen Utensils Stainless Steel Kitchen Utensils,Stainless Steel Potato Masher,Spiral Ribbon Slicer,Spiral Ribbon Peeler Yangjiang Kasonn Industrial & Trading Co., Ltd. , https://www.kasonn.com
Analysis of Hollow Molding of High-density Polyethylene (PE) Plastic Bottles