I. What are Fully Biodegradable Packaging Bags?
Fully biodegradable packaging bags are packaging materials that can be completely decomposed by microorganisms into water, carbon dioxide, and organic matter in a natural environment, leaving no harmful residues in the final decomposition products. Unlike traditional plastics that take hundreds of years to decompose, fully biodegradable materials can typically decompose completely within months under specific conditions.
II. Main Material Types
1. PLA (Polylactic Acid) Bags
Raw Material Source: Starch from plants such as corn and cassava
Characteristics: High transparency, good hardness, appearance similar to traditional plastics
Degradation Conditions: Requires an industrial composting environment (temperature 55-70℃, suitable humidity)
Cost: Currently approximately 1.8-2 times that of traditional PE bags
2. PBAT (Polybutylene Adipate/Terephthalate) Bags
Characteristics: Good flexibility, commonly used in applications requiring flexible packaging
Degradability: Mostly degrades in soil within 6-12 months
3. PHA (Polyhydroxyalkanoate) Bags
Production Process: Produced by microbial fermentation
Unique Advantages: Degradable in various environments such as seawater and soil
Applications: Marine-friendly packaging, medical field
4. Starch-Based Composite Material Bags
Composition: Starch (corn, potato, etc.) + biodegradable polyester
Characteristics: Relatively low cost, can be composted at home
Note: Pure starch bags soften easily when exposed to water, requiring composite modification.
Qingdao Xingzhan Packaging Co., Ltd. is committed to achieving true sustainable development through a systematic transformation of "source reduction - reuse - recycling - end-of-life degradation". With mature technology and improved facilities, these "disappearing bags" will play a crucial role in building a circular economy.
