무제 문서
Welcome to TLC Korea 대원그레이팅 플랜트 그레이팅 전문제작업체





Welcome to TLC Korea 무제 문서
Definition
Test Method
Welcome to TLC Korea Untitled Document
 
Biodegradable plastics are plastics, while maintaining all of their original physical characteristics and products performance (not compromising tensile strength), when discarded into nature after use, they will be completely metabolized by naturally occurring microorganisms (bacteria & fungus) into CO2, water and biomass over a short period of time.
 
Plastics are light, durable and extremely versatile. For this reason, their demand and production are increasing year after year. But these widely used conventional plastics are synthetic chemicals, which don’t belong in our world and hence do not naturally break down. Astounding quantities of plastics being discarded everyday has now become a big social problem. Especially used plastic bags, packaging films and Styrofoam are not properly treated and becoming a major cause of environmental hazard. Thrown out plastics in marine environment such as bags and fishing nets, are cluttering rivers, seas and beaches, killing fish, choking birds and in turn damaging the marine eco system in general.
 
Public pressures to clean up these environmental pollutions have been building up all across the globe and hence R&D for naturally breaking down polymers and their commercialization have been actively carried out.
 
Degradable plastics (Partially degradable plastics) are made by adding & blending natural material such as Starch to known conventional plastics such as PE, PP &PS. Although some degree of degradation is evident mainly due to the Starch content being biodegraded, a complete degradation is not possible. Remaining plastic fragments can cause secondary pollution. It is also difficult to add significantly large portion of Starch to conventional plastics.
 
Photodegradable plastics are broken down when exposed to sunlight. However, they need specific additives to conventional plastics for them to react to sunlight. These very additives can leave behind toxic or environmentally harmful byproducts as a result of photodegradation. Conventional plastics floating around in the air can cause significant damage to people.
대원그레이팅 플랜트 그레이팅 전문제작업체