Blown film machine factory is high density polyethylene material properties were summarized

Blown film machine factory is high density polyethylene material properties were summarized

High density polyethylene for non-toxic, tasteless, odourless, white particles, melting point is 130 ℃, the relative density is 0.946 ~ 0.976 g/cm3, it has good heat resistance and cold resistance, good chemical stability, also has high rigidity and toughness, good mechanical strength, dielectric properties, environmental stress cracking resistance is also good.

"Chinese name" high density polyethylene

"Commonly known as" low pressure ethylene

English full name 】 【 High Density Polyethylene

【 】 abbreviations HDPE

The composition of monomer vinyl 】

High density polyethylene is a kind of basic features 】 【 opaque white wax material, weight is lighter than water, the proportion of 0.941 ~ 0.960, soft and resilient, but than LDPE slightly hard, also can slightly elongate, non-toxic, tasteless.

Flammable, burning characteristics 】 【 from will continue to burn after the fire, flame yellow top, bottom is blue, combustion would melt, a liquid drop, no black smoke, at the same time, a paraffin during a burning smell.

Acid and alkali resistant, main advantage 】 【 organic solvent resistance, good electrical insulation, low temperature, can still maintain a certain toughness.Surface hardness, tensile strength, stiffness and mechanical strength higher than that of LDPE, close to PP, than PP toughening, but the surface finish is better than PP.

【 main shortcoming 】 mechanical properties is poor, poor permeability, easy deformation, aging, prone to brittle, brittle below PP, easy to stress cracking, surface hardness is low, easy to scrape.Difficult to printing, printing, need to surface discharge processing, not plating, surface gloss.

Injection molding process HDPE 】 there are innumerable applications, ranging from reusable thin-wall drink cup to 5 - the GSL cans, 1/5 of the consumption of domestic production of HDPE.Injection grade general melt index of 5 ~ 10, has toughness lower grades and liquidity has machinability of higher liquidity level.USES include daily necessities and food thin-wall packaging;Resilient and durable of food and paint;High environmental stress cracking applications, such as small engines fuel tanks and 90 - gal garbage cans.

General HDPE melting point is 142 ℃ and decomposition temperature is 300 ℃;Injection temperature adjustable range is larger.When we do the injection, generally using temperature is 180 ℃ -- 230 ℃;For olefin is plastic, it's not bibulous, production, without drying, but for the sake of the quality of our products available 60 ℃ temperature drying 1 hr, to floating;Polyethylene melt viscosity big, do so than small, thin wall products may lack of glue, therefore, sprue and runner are relatively large;Products with electrostatic, surface absorbing Emmanuel.Shrinkage rate of 16 per thousand.Excessive boundary value is 0.05 mm.[3]

[applications] for extrusion packaging film, rope, woven bags, fishing nets, water pipe;Injection moulding low-grade commodity and shell, the load bearing component of plastic box, turnover box;Extrusion blow molding containers, hollow products, bottles.Product performance

High density polyethylene blown film machine is used for packaging film, ropes, weaving nets, fishing nets, water pipe, injection molding is low-grade commodity and shell, the load bearing component of plastic box, turnover box, extrusion blow molding containers, hollow products, bottles.Used for blow molding products and blown film products such as food packaging bags, groceries shopping bags, fertilizer lined with thin film and so on.

Plastics blown film lineFactory production of high density polyethylene (HDPE) film blowing unit, LDPE HDPE blown film machine, polypropylene (PP) film unit, agriculture,Plastic film blowing machineAnd greenhouse film unit,Three-tier co-extrusion blown film line.Companies can design according to the needs of users and processing all kinds of rotating head, rotating wind ring, such as to rapidly replace the device.If you have this aspect demand, welcome to call advisory: 0411-86260347, url:www.dlyouyan.com