PVC packaging knowledge

PVC full name Polyvinylchlorid,the main ingredients of PVC,bright color,corrosion-resistant,durable,due to increased plasticizer,anti-aging agents toxic auxiliary materials in the manufacturing process to enhance its heat resistance,toughness,ductility,etc.,so the product is generally not store food and medicines.It is loved by the world today,is quite popular and is also widely used as a synthetic material.It's the world's second highest usage in a variety of synthetic materials.According to statistics,in 1995 only one year,PVC production capacity in Europe,there are about five million tons,while its consumption was 5.3 million tons.In Germany,PVC production and consumption of an average of 1.4 million tons.PVC is the 4% growth rate to get the production and application worldwide.In recent years,growth in several Southeast Asian PVC is particularly significant,thanks to the Southeast Asian countries have carried out urgent infrastructure needs.In the three-dimensional representation can be produced in the film of the material,PVC is the most suitable material.

PVC,its structure is simplified monomer CH2 = CHCl.

Chemical and physical properties:Rigid PVC is one of the most widely used plastic material.PVC is actually a vinyl polymeric material,the material is a non-crystalline materials.PVC clear boxes material in actual use,often by adding stabilizers,lubricants,auxiliary processing agents,colorants,impact and other additives. Not easily flammable,high strength,resistance to climate variability and excellent geometric stability.PVC against oxidants,reducing agents and strong acids have a strong resistance.However,it can be concentrated oxidizing acids such as concentrated sulfuric acid,concentrated nitric acid corrosion and does not apply to contact with aromatic hydrocarbons,chlorinated hydrocarbons occasions.PVC melting temperature during processing is a very important process parameters,if this parameter will result in improper

Material decomposition problems.PVC is very poor flow characteristics,the process very narrow range.Especially high molecular weight PVC material more difficult to process (this material is normally added to improve the flow characteristics of the lubricant),it is often used are low molecular weight PVC material.PVC shrinkage is very low,generally 0.2 to 0.6%.