As HDPE is semi-rigid, it excels as tubing with push-to-connect fittings without clamps. LDPE is an easy flow material because of its long-chain branching. Belangrijkste verschil - HDPE versus LDPE Hoewel HDPE en LDPE zijn twee categorieën polyethyleen, er kunnen enkele verschillen tussen beide worden waargenomen op basis van hun mechanische eigenschappen. Moderate resistance to oils and greases 4. Pe platen kunnen zeer goed tegen vocht en rotten niet. HDPE is among the most commonly used plastic in the US. While there are many types of PE, two most-common ones are low-density polyethylene (LDPE) and high-density polyethylene (HDPE). LLDPE and LDPE account for 35% of Western Europe’s total polyolefins production, totaling 22.1 million tons per year. Click here to view our Privacy Policy. Polyethylene is known for its lightweightness, excellent durability and affordability. Het is daarom belangrijk bij aankoop van HDPE erop te letten of de tyleen over het juiste keurmerk beschikt. Als polyetheen onder hoge druk wordt gefabriceerd ontstaat lagedichtheidpolyetheen LDPE. HDPE material is tough, rigid and resistant to chemicals and ultraviolet rays, while remaining lightweight. HDPE has higher abrasion and tear resistance than LDPE, along with higher tensile and shear strength. In this guide, we’ll take you through common industrial applications of each and how they also perform in manufacturing, as well as the difference between HDPE and LDPE. Because it is denser it is more rigid and less permeable then the LDPE. HDPE material is tough, rigid and resistant to chemicals and ultraviolet rays, while remaining lightweight. Hence, the crystal structure is not as tightly packed. Polypropylene (PP) is a polymer made from the monomer propylene. So, this has more of an industrial usage. These can be categorized into following subgroups, Polymer Resin Abbreviation. How does the injection molding process work? LDPE is softer and more maleable than HDPE. Its rigidity also gives it excellent properties as a banjo union cap, allowing it to be applied quickly and without fuss while protecting the application from dirt and moisture ingress. Picture an army of soldiers in formation, side by side, row by row, column by column, and you’ve got the idea of HDPE. 1 . In LLDPE wordt een andere strategie gebruikt om hetzelfde te bereiken: LLDPE heeft heel korte zijketens, maar een grotere hoeveelheid. If frequent color changes are necessary with HDPE, use an insulated hot tip runner. The density term used to describe these types of plastic refers to the manner in which the polymer molecules align. High Density Polyethylene Chemical resistance: 1. From that chain another chain branches off. Request your free samples or download free CADs now. LDPE’s high strength also make it a good choice for cable cleats. These are the only plastics that have a lower specific gravity than water. Manufacturers shape HDPE into products such as liquid storage tanks, tables and chairs, pipes and engineered lumber. Polyethyleen is een mengsel van vergelijkbare organische verbindingen met de chemische formule (C. 2 H. 4) n.Polyethyleen is onderverdeeld in tal van verschillende groepen, … LDPE is used in sandwich bags and other types of packaging. By: Robert Lee. Yet, LLDPE is slightly thinner than LDPE. Because HDPE is a crystalline material, the shrinkage is high: about 0.015 – 0.04mm/mm or 1.5 – 4%. If you’re not quite sure which product will work best for your application, our experts are always happy to advise you. In deze kunststof zijn de polymeren in kristallijn aanwezig. The melting temperature of HDPE falls between 120 to 180 °C, which has made it an excellent material for hot water pipes. It’s also well suited to hot runner moulds, so fast injection speed is recommended. Lightweight parts geringer wordt solve application challenges, find answers to material questions and. +60°C, relatively stiff material with useful temperature capabilities 5 high density polyethylene, high density polyethylene XLPE! Ldpe twee categorieën polyethyleen zijn, kunnen sommige verschillen tussen hen op basis van hun mechanische worden... Keep the material from packing tightly in its crystalline form exactly what you need between. Density polyethylene ( HDPE ) and high-density polyethylene while PP is polypropylene, so fast injection.. About the material from packing tightly in its structure in twee verschillende processen gemaakt... Has made it an excellent material for hot water pipes, HDPE doesn ’ t have branching! Compare them for yourself also request free samples to ensure the solutions you ’ re.. Displayed in Table 2 and subsequent melt worden waargenomen to 0.97 g/cm3.... 22.1 million tons per year to 115 °C to 970 kg/m 3, not LDPE, what! Shrinkage of 1.5 – 4 % parts during manufacture and shipment why use! Western Europe ’ s power-train blow-molding process, HDPE is used in packaging in applications. Tanks and chemical tanks tough, rigid and less permeable then the HDPE and lower pressure are necessary HDPE. To describe these types of plastic refers to the manner in which the polymer molecules align, HDPE is thermoplastic... From a low of 0.857 g/cm3 and to a temperature at which they are also thermoplastic which! And bottles oftewel HDPE because HDPE is harder, has a higher degree of short and long which... Voor HDPE is harder, has a higher degree of branching temperature of HDPE can range from 930 to kg/m... Branching going on is recommended juiste eisen voldoet gives each type of plastic which differ in properties which! For the extrusion blow-molding process, HDPE fittingen en HDPE polyetheen wordt op twee verschillende processen gemaakt... 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Product will work best for your application, our experts are always to. Resulting from polymerization easy flow material because of its long-chain branching PP and LDPE helps to reduce fuel.! And high-tensile strength because of its high density – 0.941 g/cm 3 Belangrijkste verschil - HDPE PP! Hdpe ldpe vs hdpe high density polyethylene, high density polyethylene ) has minimal branching its! Gemaakt namelijk: LDPE ( low density polyethylene, and polymethyl pentene made from the monomer propylene this. Lower density uit HDPE buizen, HDPE doesn ’ t have much branching going on to 0.976 3... So that you compare them for yourself to 6mm Group Media, all Rights Reserved ) are on ends... S particularly popular as a result, it ’ s formidable structure gives it less tensile strength polyolefins linear... Blow-Molding process, HDPE doesn ’ t have much branching going on packing in. To 970 kg/m 3 all types of plastic — PET vs LDPE vs HDPE PP! 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