Guanzhong:Top Custom Biodegradable Bags Manufacturers

Material Science and Innovation: Core Advantages of PLA+PBAT

Guanzhong scientifically blends PLA (polylactic acid) and PBAT (aliphatic-aromatic copolyester) to ensure materials are both highly degradable and mechanically robust. PLA provides excellent degradability and transparency, while PBAT enhances flexibility and tear resistance. Through proprietary formulation technology, the materials are eco-friendly and durable.

• Sustainable Material Source: Guanzhong primarily uses corn as the renewable plant resource to extract starch, which is then fermented to produce PLA, eliminating reliance on petrochemical raw materials and reducing carbon emissions.
• Core Performance: High tensile strength, tear resistance, and leak-proof properties; suitable temperature range from -20℃ to 80℃, ideal for daily packaging and cold-chain logistics.
• True Biodegradability: Materials can degrade more than 90% within 90 days under composting or soil conditions without harmful residues, certified under DIN EN 13432 and ASTM D6400.

By optimizing the PLA+PBAT system, Guanzhong provides global customers with high-performance, environmentally friendly, and sustainable packaging materials.

Guanzhong’s Custom Manufacturing Capability: Full-Process Control from Design to Delivery

As a leading custom biodegradable bags manufacturer, Guanzhong has established an intelligent and systematic production and service system to ensure each step from customer requirements to product delivery is precise, efficient, and traceable.

Modern Factory and Smart Production System
Guanzhong operates a 200,000 m² industrial park with 100,000 m² of standardized factory space, integrating automation and information systems across production.

• Blown film lines: 50
• Bag-making lines: 25
• Injection molding lines: 50
• Thermoforming lines: 8
• Modified masterbatch & sheet extrusion lines: 8
• Straw extrusion lines: 5
• Annual production capacity: 90,000 tons
• Staff: 180 employees

Custom Service Process

• Requirement Analysis and Application Confirmation: Match the best solution according to customer industries (catering, retail, pets, agriculture, etc.)
• Material Ratio and Thickness Selection: Determine PLA and PBAT ratios and film thickness according to usage
• Mold Design and Sample Production: Complete sample development and appearance confirmation within 7 days
• Performance Testing and Production Verification: Includes tensile, degradation, and penetration tests
• Mass Production and Eco-Friendly Packaging Delivery: Standardized workflow ensures consistency and on-time delivery

Customizable Options
Size, color, logo, printing method, and packaging form can all be customized. Guanzhong supports small-batch production and rapid sample delivery, serving brands, e-commerce platforms, and retail clients flexibly.

Guanzhong is not only a manufacturer but also a green packaging solution partner, providing one-stop sustainable services from design, material optimization, to finished product delivery.

Multi-Scenario Applications: Guanzhong Biodegradable Bags Industry Solutions

Guanzhong’s biodegradable bags, with high performance and customizable features, are widely applied across multiple fields:

• Retail Shopping: Vest-style shopping bags replace traditional plastic bags, providing high load-bearing capacity and good hand feel, supporting branded printing.
• Household Cleaning: Garbage bags and rolls are leak-proof and tear-resistant, suitable for households, hotels, and offices.
• Pet Cleaning Products: Pet waste bags are environmentally safe, easy to tear, and fully degradable, meeting European and American standards.
• Food & Takeout Packaging: Food-grade materials in direct contact with meals, oil-resistant and water-resistant, suitable for hot and cold food.
• Agriculture and Logistics Packaging: Reinforced bags are suitable for agricultural products packaging and courier outer packaging.

Guanzhong provides professional material ratio and structure optimization for different usage scenarios, balancing performance and application requirements perfectly.

Strict Quality Control and International Certification System

Guanzhong has an independent R&D testing center equipped with multifunctional tensile testers, degradation cycle analyzers, and food safety testing equipment to ensure every bag meets international standards.

Internal Testing Process

• Raw Material Inspection: Check biobased content, impurity ratio, and thermal stability
• Process Monitoring: Real-time monitoring of film thickness uniformity, tensile strength, and elongation
• Finished Product Testing: Composting degradation tests and food contact safety evaluations

International Certification System

• China Standards: GB/T 20197, GB/T 19277.1, GB/T 4806.7
• International Standards: ASTM D6866, ASTM D6400, DIN EN 13432, FDA food contact standards
• International Composting Certifications: BPI, DIN, industrial composting systems
• Upcoming Certifications: EU EN13432, US ASTM D6400, Australia AS4736

The strict testing system ensures Guanzhong products are highly trusted and compliant globally.

Why Choose Guanzhong: Professional Strength and Global Trust

• Leading Manufacturing Scale: Guanzhong’s industrial park spans 200,000 m², with 100,000 m² of standardized factory space. Production lines cover blown film, bag-making, injection molding, thermoforming, modified masterbatch extrusion, and straw production. Annual output reaches 90,000 tons, supported by 180 skilled employees.
• Technological Innovation: With over 10 patented technologies, Guanzhong continuously optimizes the PLA+PBAT system, enhancing mechanical strength, degradation speed, and production efficiency. The R&D team is dedicated to advancing biobased material performance and sustainable packaging solutions.
• Full Product Coverage: Guanzhong provides biodegradable bags manufacturers full product lines, including garbage bags, shopping bags, pet waste bags, food packaging, and straws, meeting the diverse needs of brands, e-commerce, and retail clients.
• International Certification Assurance: Products are certified by BPI, DIN, FDA, ASTM D6400, ensuring compliance with global environmental standards, food contact safety, and industrial composting degradability.
• Eco-Driven Mission: Adhering to “green materials, low-carbon manufacturing, circular economy,” Guanzhong actively promotes sustainable development in the packaging industry, helping customers achieve eco-friendly goals and brand competitiveness.
• Global Client Trust: Products are exported to Europe, the Americas, Southeast Asia, and Australia. Long-term partnerships with international brands testify to Guanzhong’s reliability, stable production, and high-quality service.

Guanzhong is not only a custom biodegradable bags manufacturer but also a global green packaging solutions leader, delivering professional, innovative, and responsible one-stop eco-friendly services.

As a leading biodegradable bags manufacturers in China and worldwide, Guanzhong leverages strong technical capabilities, advanced production systems, and rigorous quality standards to drive high-quality development in the eco-friendly packaging industry. From material innovation to global certification, from customized services to multi-industry applications, Guanzhong uses expertise and responsibility to help the world achieve a greener and more sustainable future.