What is the difference between degradable packaging bags and fully degradable packaging bags?

Many friends ask what is the difference between degradable packaging bags and fully degradable packaging bags? Isn’t it the same as a degradable packaging bag? That’s wrong, there is a difference between degradable packaging bags and fully degradable packaging bags.

Degradable packaging bags, the implication is that they can be degraded, but degradable packaging bags are divided into “degradable” and “fully degradable”. What is the difference? Continue to read the little knowledge provided by Anrui.

Degradable packaging bags refer to adding a certain amount of additives (such as starch, modified starch or other cellulose, photosensitizers, biodegradants, etc.) Degradable plastic bags.

Fully degradable packaging bag means that the plastic packaging bag is completely degraded into water and carbon dioxide. The main source of this fully degradable material is processed from corn, cassava, etc. into lactic acid, which is PLA. Polylactic acid (PLA) is a new type of biological substrate and renewable biodegradable material. The starch raw material is saccharified to obtain glucose, and then fermented from glucose and certain strains to produce high-purity lactic acid, which is then synthesized by chemical synthesis methods. molecular weight polylactic acid. It has good biodegradability, and can be completely degraded by microorganisms in nature under specific conditions after use, eventually generating carbon dioxide and water, without polluting the environment, which is very beneficial to protect the environment and is an environmentally friendly material for workers. At present, the main bio-based material of the fully degradable packaging bag is composed of PLA+PBAT, which can be completely decomposed into water and carbon dioxide in 3-6 months under the condition of composting (60-70 degrees), without pollution to the environment.

Why should PBAT be added? Anrui testing chemical engineer helped the editor to interpret it. PBAT is a copolymer of adipic acid, 1,4-butanediol and terephthalic acid. It is a chemical synthesis that can be fully biodegraded. The aliphatic-aromatic polymer of PBAT has excellent flexibility and can be used for film extrusion, blow molding, extrusion coating and other molding processes. The purpose of blending PLA and PBAT is to improve the toughness, biodegradation and molding processability of PLA. PLA and PBAT are incompatible, so choosing a suitable compatibilizer can significantly improve the performance of PLA.

See here to understand the difference between degradable packaging bags and fully degradable packaging bags.

Degradable packaging bags, the implication is that they can be degraded, but degradable packaging bags are divided into “degradable” and “fully degradable”. Degradable packaging bags refer to adding a certain amount of additives (such as starch, modified starch or other cellulose, photosensitizers, biodegradants, etc.) Degradable plastic bags. Fully degradable packaging bag means that the plastic packaging bag is completely degraded into water and carbon dioxide. The main source of this fully degradable material is processed from corn, cassava, etc. into lactic acid, which is PLA.

Polylactic acid (PLA) is a new type of biological substrate and renewable biodegradable material. The starch raw material is saccharified to obtain glucose, and then fermented from glucose and certain strains to produce high-purity lactic acid, which is then synthesized by chemical synthesis methods. molecular weight polylactic acid. It has good biodegradability, and can be completely degraded by microorganisms in nature under specific conditions after use, eventually generating carbon dioxide and water, without polluting the environment, which is very beneficial to protect the environment and is an environmentally friendly material for workers.

At present, the main bio-based material of the fully degradable packaging bag is composed of PLA+PBAT, which can be completely decomposed into water and carbon dioxide in 3-6 months under the condition of composting (60-70 degrees), without pollution to the environment. Why should PBAT be added? Professional flexible packaging manufacturers are here to explain that PBAT is a copolymer of adipic acid, 1,4-butanediol, and terephthalic acid, which is a chemically synthesized fat that can be fully biodegradable. Aromatic-aromatic polymer, PBAT has excellent flexibility and can be used for film extrusion, blow molding, extrusion coating and other molding processes. The purpose of blending PLA and PBAT is to improve the toughness, biodegradation and molding processability of PLA. PLA and PBAT are incompatible, so choosing a suitable compatibilizer can significantly improve the performance of PLA.

 


Post time: Feb-28-2022