Ethylene Vinyl Acetate Manufacturing Process

Process economics program report 155b published september 2012 despite the threat of linear low density polyethylene lldpe resin substitution global ethylene vinyl acetate eva copolymers consumption continues to grow with new capacity expansions expected.

Ethylene vinyl acetate manufacturing process.

Ethylene vinyl acetate is a type of plastic a polymer with a wide variety of uses both residential and industrial. Acetylene based technology was used first in the commercial production of vam with the gas phase process preferred to the liquid phase reaction. Ethylene has now become the preferred feedstock with the gas phase route used due problems of corrosion and byproduct formation when. The main advantages of eva is that it has good toughness flexibility clarity and gloss the ability to withstand low temperatures and good tear resistance.

The major industrial route involves the reaction of ethylene and acetic acid with oxygen in the presence of a palladium catalyst. The sheet material is cut into a plurality of elongated strips. Subscribers to our commodity price database have access to ethylene vinyl acetate and as much as 217 other commodities prices across several countries from main world regions. Ethylene vinyl acetate eva is a copolymer that is manufactured from ethylene and vinyl acetate monomer vam.

See a sample below or register for free to see much more. Vinyl acetate is the acetate ester of vinyl alcohol. A predetermined amount of the strips are placed into a first mold unit which is heated. Intratec provides ethylene vinyl acetate pricing data covering 13 years of historical prices and forecasts.

The food and drug administration fda has stated that ethylene vinyl acetate is safe when used in food production packaging or transportation and it s not an especially dangerous material. A process for producing an ethylene vinyl acetate insole involves weighing molding compounds for manufacturing the ethylene vinyl acetate insole. Vinyl acetate ethylene vae emulsions are based on the copolymerization of vinyl acetate and ethylene in which the vinyl acetate content can range between 60 and 95 percent and the ethylene content ranges between 5 and 40 percent of the total formulation. Since vinyl alcohol is highly unstable with respect to acetaldehyde the preparation of vinyl acetate is more complex than the synthesis of other acetate esters.

The molding compounds are mixed and rolled by means of a roller so as to form a sheet material. There are three different types of eva copolymer which differ in the vinyl acetate va content and the way the materials are used.