Top Biodegradable Carry Bags Manufacturers in the Industry

Guanzhong’s Manufacturing Strength and Technical Advantages

• Large-Scale Industrial Park and Fully Integrated Manufacturing System: Guanzhong is located on Dongping Light Industry Avenue, Yongchun County, Quanzhou City, Fujian Province. The company owns an industrial park covering nearly 200,000 square meters, with more than 100,000 square meters dedicated to production and supporting facilities. In the biodegradable shopping bag manufacturing sector, such a large self-owned industrial park means that core production does not rely on outsourced factories, allowing strict internal control over raw materials, production scheduling, and finished product quality.
• Automated Production Lines and Stable Bag Manufacturing Capacity: Focusing on biodegradable shopping bags, Guanzhong has established a complete bag manufacturing system equipped with 50 biodegradable film blowing and printing lines and 25 bag-making lines. This configuration enables the bag-related production lines to maintain a stable monthly capacity of approximately 1,500 tons, continuously supporting medium to large orders and long-term cooperation projects.
• Mature Processing Capability for PLA + PBAT Modified Materials: Guanzhong uses bio-based and biodegradable composite materials as its core raw material system, with a strong focus on PLA + PBAT modified formulations. Addressing the high rigidity of PLA and the flexibility of PBAT, the factory has accumulated extensive process experience. During the film blowing stage, precise control of temperature, stretching ratio, and cooling processes ensures that shopping bags maintain good load-bearing and tear resistance performance while meeting biodegradation requirements.
• Integrated Film Blowing, Bag Making, and Eco-Friendly Printing Process: From film blowing and bag forming to printing, all processes are completed in Guanzhong’s standardized in-house workshops, avoiding the performance impact caused by repeated transportation. The printing process uses eco-friendly inks compatible with biodegradable materials, ensuring clear graphics and abrasion resistance without compromising the overall biodegradable structure, making it especially suitable for customized shopping bag projects.
• Consistency Control in Mass Production: Given the sensitivity of biodegradable materials to process fluctuations, Guanzhong implements strict batch management during production. Through online thickness monitoring, heat seal strength sampling, and finished product performance testing, the factory ensures consistent thickness, texture, and load-bearing performance across different production batches.
• Delivery Management and Scalable Supply Assurance: With 180 professional production staff and a mature production planning system, Guanzhong can typically control the production cycle of bag products to around 15 days under normal conditions. Combined with the company’s overall annual capacity of approximately 90,000 tons, this provides global customers with long-term, stable, and predictable supply support.

Customized Solutions: How Guanzhong Meets Global Customer Needs

Precise Customization of Size, Thickness, and Load Capacity:

Guanzhong can systematically customize biodegradable shopping bags according to different national regulations and usage scenarios, including size, thickness, and load capacity. By precisely adjusting bag width, height, bottom seal structure, and thickness ranges, the bags are suitable for both lightweight retail packaging and higher load requirements in supermarkets and fresh food applications.

• Bag Structure Options for custom biodegradable bags: In terms of bag structure, Guanzhong offers multiple mature and reliable options, including T-shirt bags, flat bags, handle bags, and roll bags. Each bag type differs in material efficiency, load-bearing method, and ease of use. The factory can assist customers in selecting the most appropriate bag design based on sales channels and end-user habits.
• LOGO Printing Techniques and Eco-Friendly Ink Application: To meet brand customer requirements, Guanzhong supports customized printing for biodegradable shopping bags, including logos, graphic elements, and regulatory information. The printing process uses eco-friendly inks compatible with PLA + PBAT materials, ensuring printing clarity and durability without affecting biodegradation performance.
• Differentiated Design for Various Industry Applications: Based on extensive experience serving international customers, Guanzhong provides differentiated design recommendations for different industries. For example, retail and supermarket applications prioritize carrying comfort and display appearance, while e-commerce and logistics scenarios emphasize sealing strength and tear resistance. Through material formulation and structural detail adjustments, shopping bags are better aligned with real usage requirements.
• Standardized OEM / ODM Customization Process: Guanzhong offers a mature OEM / ODM customization process with clear milestones from requirement confirmation to design finalization and mass production. For standard customization projects, mold or sample confirmation typically takes around 7 days, while mass production is generally completed within approximately 15 days, helping customers plan procurement and product launches efficiently.

Material Science and Performance: Core Advantages of PLA + PBAT Biodegradable Bags

Material Properties and Modification Principles of PLA and PBAT

PLA is derived from renewable bio-based raw materials and offers excellent compostability, while PBAT provides essential flexibility and impact resistance. Through appropriate modification, Guanzhong enables stable synergy between mechanical performance and biodegradation behavior, meeting daily shopping bag requirements for strength and user experience.

Balance of Strength, Flexibility, and Durability

Through formulation and process optimization, Guanzhong’s PLA + PBAT shopping bags demonstrate stable tensile strength and tear resistance. They can withstand everyday loads while maintaining reliable performance throughout their usage cycle, avoiding the issue of being “environmentally friendly but impractical.”

Performance Comparison with Traditional Plastic Bags

With合理 thickness design, biodegradable shopping bags achieve load-bearing capacity, handling comfort, and convenience close to traditional plastic bags, while offering clear environmental and regulatory advantages that align with current market expectations for sustainable packaging.

Adaptability to Transportation, Storage, and End Use

Recognizing the sensitivity of biodegradable materials to environmental conditions, Guanzhong optimizes packaging and storage solutions to ensure stable performance during normal transportation and warehousing, preventing premature aging or deformation.

Guanzhong’s Quality and Certification System: Ensuring True Compliance for Every Biodegradable Shopping Bag

Applicability of EN 13432, ASTM D6400, and Other International Certifications

Guanzhong’s biodegradable shopping bags can meet EN 13432, ASTM D6400, and other mainstream international compostability standards according to market requirements, providing a compliance foundation for entry into the EU, North American, and other international markets.

Raw Material Inspection and Production Process Quality Control

From raw material intake, Guanzhong conducts testing on key performance indicators and continuously monitors melt behavior, thickness, and forming stability during production, reducing quality risks caused by material fluctuations.

Thickness, Tensile Strength, and Heat Seal Performance Testing

At the finished product stage, the factory systematically tests bag thickness, tensile strength, and heat seal performance to ensure reliable load-bearing capacity and sealing performance in actual use.

Dual Assurance Through Internal QC and Third-Party Testing

In addition to its internal quality control system, Guanzhong cooperates with third-party testing institutions for sampling and certification, forming a dual assurance mechanism that helps customers reduce compliance and regulatory risks.

Application Scenarios and Product Adaptation: Real-World Performance of Guanzhong Biodegradable Shopping Bags

Typical Application Scenarios: Supermarkets, Retail, E-commerce, and Brand Packaging

Guanzhong’s biodegradable shopping bags are widely used in supermarket retail, e-commerce delivery, apparel brands, and promotional packaging, achieving a strong balance between practicality and environmental branding.

Actual Performance of Different Thickness and Load Specifications

Through appropriate specification design, shopping bags with varying thicknesses and load ratings perform stably in real use, meeting diverse needs from light-duty to medium-duty applications.

Selecting the Right Bag Type and Formulation Based on Usage Environment

Guanzhong provides recommendations on bag types and material formulations based on usage frequency, load weight, and application environment, helping customers achieve a balanced solution between performance and cost.

Stability and Reliability Under Real Usage Conditions

Under normal usage conditions, Guanzhong’s biodegradable shopping bags maintain stable performance and user experience without affecting end consumers’ daily use.

Supported by stable production capacity and strict quality control, Guanzhong is capable of supplying custom biodegradable bags that align with specific usage environments, branding requirements, and regulatory standards, while maintaining consistent performance and reliability for end users.

From large-scale manufacturing capability and mature PLA + PBAT processing experience to systematic customization services and strict quality certification systems, Guanzhong has built a comprehensive and reliable competitive advantage in the biodegradable shopping bag sector.
As professional biodegradable carry bags manufacturers, Guanzhong not only delivers compliant products but also provides brands and buyers with a long-term, stable, and reliable cooperation foundation. Choosing a partner with genuine manufacturing strength and a proven quality system is a critical step in advancing sustainable packaging solutions.