2026 Leading Corn Starch Bags Wholesale Manufacturer

Choosing Corn Starch Bags: Advantages and Applications

With the global awareness of environmental protection continuously increasing, the problem of traditional plastic pollution has become more severe. Data shows that the global annual plastic production exceeds 300 million tons, of which about 8 million tons are discharged into the oceans, causing immense pressure on the ecosystem. Against this backdrop, corn starch bags, as biodegradable and environmentally friendly packaging materials, are gradually becoming the preferred choice for businesses and consumers.

Corn starch bags are mainly made of corn starch, PLA (polylactic acid), PBAT (polybutylene adipate terephthalate), and other biodegradable materials. Under industrial composting conditions, these materials can fully decompose within 6–12 months without leaving harmful residues, achieving true “green recycling.”

The advantages of corn starch bags are mainly reflected in the following aspects:

• Environmental safety: Made from bio-based materials, non-toxic, odorless, and compliant with food contact standards, suitable for supermarkets, catering, and retail packaging.
• Strong durability: Double-sided thickened design, resistant to stretching and tearing, ensuring load-bearing capacity and service life.
• Diverse customization: Color, size, thickness, and printed patterns can be customized according to customer requirements, supporting corporate LOGO customization and enhancing brand recognition.
• Wide application: Suitable not only for daily shopping but also for waste sorting, pet waste collection, and other daily scenarios, helping companies comply with policy restrictions and environmental regulations.

By choosing corn starch bags, businesses can not only comply with local plastic reduction policies but also enhance their brand’s environmental image and convey the value of sustainable development to consumers.

Guanzhong’s Professional Strength: A Trusted biodegradable bag factory

As a leading domestic manufacturer of biodegradable bags, Guanzhong is located on Dongping Light Industry Avenue, Yongchun County, Quanzhou, Fujian Province. The factory covers nearly 200,000 square meters, with a total production workshop area of more than 100,000 square meters. The company is equipped with an advanced R&D building and standardized workshops, including pelletizing, film blowing, injection molding, and thermoforming, making it a professional corn starch bag manufacturing enterprise integrating R&D, production, and sales.

Technical and Equipment Advantages

Guanzhong has the following production capacities:

• Injection molding: 50 fully automatic injection molding lines, monthly output about 2,000 tons
• Blister molding: 8 fully automatic thermoforming lines, monthly output about 800 tons
• Film blowing, printing, and bag making: 50 biodegradable film blowing and printing lines + 25 bag-making lines, monthly output about 1,500 tons
• Bio-based modified material production: 3 biodegradable sheet extrusion lines + 5 bio-based modified masterbatch production lines, monthly output about 2,000 tons
• Straw production: 5 fully automatic straw extrusion lines, monthly output about 250 tons

These equipment and production lines not only ensure large-scale stable production but also flexibly meet customer customization needs for different sizes, thicknesses, and materials.

Certifications and International Recognition

Guanzhong’s corn starch bag products have passed multiple authoritative domestic and international certifications:

• China standards: GB/T 20197, GB/T 19277.1, GB/T 4806.7 (degradation performance and food contact testing)
• International standards: ASTM D6866, ASTM D6400, DIN EN 13432 (bio-based ash, bio-carbon content, and degradability)
• Food contact safety: US FDA testing
• Industrial composting certification: DIN Industrial Compost Certification, US BPI Degradability Certification

In addition, the company’s products are applying for EU EN13432, US ASTM D6400, and Australian AS4736 industrial composting certifications, ensuring market access and recognition internationally. These certifications fully demonstrate Guanzhong’s professionalism and authority in the field of corn starch bags.

Professional Team and Experience

Guanzhong has about 180 production and technical staff, including material engineers, process R&D personnel, and quality management experts. The team has accumulated nearly 20 years of experience in bio-based materials and biodegradable products, providing customers with full-process professional guidance from raw material selection, process optimization, sample prototyping to mass production.

From Raw Material to Finished Product: Guanzhong Corn Starch Bags Production Process

Guanzhong’s corn starch bag production follows a strict process to ensure that each batch of products meets international standards and customer requirements while balancing environmental protection and functionality.

Raw Material Selection

The company selects high-quality grains to extract corn starch, combined with PLA (polylactic acid), PBAT (polybutylene adipate terephthalate), and other bio-based modified materials to ensure materials are non-toxic, safe, and biodegradable. Each batch of raw materials undergoes strict testing, including:

• Moisture content testing: Keep the material moisture within the ideal range to ensure even film formation without bubbles during extrusion and film blowing.
• Mechanical strength testing: Test the tensile properties of raw materials to provide reliable toughness for finished bags.
• Degradability verification: Perform sample biodegradation testing to ensure full decomposition under industrial composting conditions.

These preliminary controls lay a solid foundation for producing high-quality corn starch bags.

Production Process

• Lactic Acid Fermentation and Polylactic Acid Synthesis: Corn starch is fermented to produce lactic acid, which is then chemically polymerized to synthesize PLA. In this process, Guanzhong precisely controls fermentation temperature, time, and catalyst dosage to ensure uniform molecular weight, excellent mechanical properties, and stable degradability. This step is key to ensuring the bag’s final toughness, tensile strength, and eco-friendly performance.
• Film Blowing: PLA/PBAT composite materials are extruded through 50 fully automatic biodegradable film blowing and printing lines to form uniform films. Key parameters controlled during film blowing include temperature gradient, stretching and blowing ratio, cooling rate, and online thickness monitoring to ensure films are flexible and highly tensile.
• Bag Making and Printing: The films enter 25 bag-making lines for cutting, heat sealing, and forming. Guanzhong offers various bag types, including flat bags, vest bags, and partition bags. The printing process uses high-precision flexographic printing technology, supporting multi-color printing and enterprise customization of LOGO, patterns, and QR codes. Automated temperature control during sealing and cutting ensures uniform sealing and no leakage.
• Quality Testing: Sampling is conducted throughout the process, including tensile strength, toughness, thickness, and degradability, ensuring each batch meets ISO9001, EN 13432, and other international standards.

Custom Solutions: Meeting Your corn starch bags wholesale Needs

Guanzhong provides comprehensive customization services, supporting OEM/ODM wholesale models to meet the needs of various scales and industries. Whether it is retail businesses, catering chains, or e-commerce logistics, Guanzhong offers flexible, professional customization solutions, ensuring customers receive the corn starch bags most suitable for their operations.

Customization Options

• Guanzhong provides multi-dimensional and detailed customization services, including:
• Size and Thickness Customization: Adjust bag length, width, bottom gusset, and thickness according to customer needs, from lightweight shopping bags to heavy-duty bags.
• Style Customization: Including flat bags, vest bags, partition bags, and reinforced handle bags, suitable for retail, logistics, sorting, and high-load requirements.
• Color and Pattern Customization: Single-color, two-color, or multi-color printing; supports full-color gradients, stripes, or special process patterns to meet brand color requirements.
• Corporate LOGO and QR Code Customization: Support printing of company logos, QR codes, slogans, or social media information, enhancing brand recognition and marketing value.
• Packaging Form Customization: Can be rolled, packed, or individually packed to adapt to different distribution channels and storage needs.
• Functional Additional Customization: Such as leak-proof design, heat-sealing optimization, anti-static treatment, and tear-resistant reinforcement for wet goods, electronics, or high-load packaging.

Flexible Order Handling

• Small batch trial: Fast prototyping, mold completed in 7 days, production in 15 days
• Large batch order: Factory annual capacity up to 90,000 tons, ensuring stable supply
• Packaging and Logistics Optimization: Guanzhong provides packaging suggestions, helping customers achieve efficient transportation and reduce losses while ensuring compliance in domestic and international markets.

Customer Operation Guide

• Clarify product type, size, thickness, and printing requirements
• Obtain free samples for testing
• Confirm customization plan and order quantity
• Confirm sample quality before mass production

Through this process, customers can easily obtain corn starch bags that meet their brand and business needs while ensuring product quality, functionality, and environmental performance.

Guanzhong’s Certification and Quality Assurance: The Strength Behind Industry Trust

Guanzhong bases its operations on a strict quality management system and extensive certifications to ensure product safety, reliability, and eco-friendliness.

Core Certifications

• ISO9001: Full-process quality management
• EN 13432: Industrial compostable standard
• FDA: Food contact safety
• RoHS: Reduced chemical hazard
• BPI: US Industrial Composting Certification

Strict Quality Management

• Raw Material Inspection: Ensure corn starch, PLA, PBAT, and other materials are pure and safe
• Process Monitoring: Real-time monitoring at each stage of film blowing, bag making, and printing
• Finished Product Inspection: Sampling checks for tensile strength, toughness, thickness, and degradability to ensure every batch meets standards

Customer Value

• Enhance Brand Image: Display international certifications to demonstrate corporate environmental responsibility
• Reduce Risk: Minimize returns and complaints, improve customer satisfaction
• Decision Reference: Certification data helps customers choose more reliable corn starch bag suppliers

Guanzhong’s certification system and strict quality control make it a trusted biodegradable bag factory for customers.

As the leading corn starch bags wholesale manufacturer in 2026, Guanzhong has become an industry benchmark with rich experience, advanced equipment, strict quality control, and comprehensive customization services. From raw material selection, production processes, customization services to certification systems, Guanzhong not only provides high-quality, biodegradable corn starch bags but also helps companies enhance their brand’s eco-friendly image and meet market and policy demands.

Whether retail businesses, catering chains, or packaging distributors, Guanzhong can provide stable production capacity, flexible customization, and reliable quality solutions, helping customers stand out in the wave of green packaging. Contact Guanzhong to obtain free samples and start corn starch bags wholesale cooperation, jointly promoting the development of sustainable packaging.