What is the difference between ld and hd polyethene

At Polymer Solutions, we have a list of polymers we admire, and polyethylene PE has a place of honor on it. Globally we use and produce about 80 million tons of PE every year, and chances are at this very moment something made from PE is within reach of your hand.

Of course, as its name suggests, polyethylene is a thermo-plastic created from the polymerization of ethylene, a process that produces very long, very straight chains of hydrocarbon monomers. Because it has shorter and more branches its chains are able slide against each other upon elongation without becoming entangled like LPDE which has long branching chains that would get caught on each other.

It is less notch sensitive then HDPE and has better stress cracking resistance. It has a density range of 0. Because it is denser it is more rigid and less permeable then the LDPE. XLPE Crosslinked Polyethylene is high density polyethylene which has covalent bonds between connecting its polymer chains.

These bonds are caused by using heat plus chemicals or radiation and they help to form 3-dimensional polymers with high molecular weights. These bonds tie the polymers together and lengthening the polymer chains giving it better physical properties.

The molecular structure that is formed by crosslinking provides superior stress cracking, improved toughness, stiffness, and chemical resistance compared to the HDPE. UHMW Ultra High Molecular Weight Polyethylene has extremely long chains, with molecular weight numbering in the millions usually between 2 to 6 million. For more than 50 years, OMICO has been a premier provider of high-quality blow molded plastic parts and components for industries ranging from automotive to toy manufacturing.

We accommodate a variety of plastic materials in our molding operations, including HDPE. For more information on our blow molding products and services, contact us or request a quote today. Are you searching for the right blow molding manufacturer for your company? LDPE vs. Share :. It has a tighter cell structure making it more tear and puncture resistant. High Density Polyethylene HDPE, aka HD , has the distinction of being the strongest, toughest, most chemical resistant and least flexible of the four types of flexible plastic sheeting referenced in this article.

Used industrially, the thickness range from 12 mils to mil thick. HDPE is used as secondary containment liners for oil tanks, and most industrial ponds and canal liners where chemical resistance is needed. In conclusion, who is the fairest of them all? That all depends on your application! Gratefully there are many more types of plastic sheeting products to do all sort of thing to protect the surface or project it is intended for. Take a look around our website, and you will see some of the choices available to you.

We haven't listed all our products- there's just too many.