Factory Price 32%Mol Ethylene-Vinyl Alcohol Copolymer/EVOH/Plastic Materials

Full Name: Ethylene-Vinyl Alcohol copolymer

Other Equal brand: Kuraray.ChangChun;Nippon Gohsei

Short Name: EVOH

Packing: 20kg/bag
 

Ethylene vinyl alcohol (EVOH) is a copolymer of ethylene and vinyl alcohol. Because the latter monomer mainly exists as its tautomerthe copolymer is prepared by polymerization of ethylene and  to give the (EVA) copolymer followed by hydrolysis. EVOH copolymer is defined by the mole % ethylene content: lower ethylene content grades have higher barrier properties; higher ethylene content grades have lower temperatures for extrusion.

The plastic resin is commonly used as an oxygen barrier in food packaging. It is better than other plastics at keeping air out and flavors in, is highly transparent, weather resistant, oil and solvent resistant, flexible, moldable, recyclable, and printable. Its drawback is that it is difficult to make and therefore more expensive than other food packaging. Instead of making an entire package out of EVOH, manufacturers keep costs down by coextruding or laminating it as a thin layer between cardboard, foil, or other plastics.

It is also used as a hydrocarbon barrier in plastic fuel tanks and pipes.

Application:

(1)Industrial application: Gas Tank(Fuel Tank).Underfloor heating pipes.Pipeline.Pesticide bottle.underfloor heating pipes.cosmetic bottle
(2)Food package:Due to its strong barrier against oxygen and gas, food packaging manufacturers use EVOH in their packaging structure to extend the shelf life of food products.Food film.Wire bags.
(3)Medical Application:EVOH is used in a liquid embolic system in interventional radiology, e.g. in Onyx.Dissolved in dimethyl sulfoxide (DMSO) and mixed with a radiopaque substance, ethylene vinyl alcohol copolymer is used to embolize blood vessels.

Product Picture:
                     
Specification Data:

(1) HSM-3201
(2)HSM-3801