Weifang, Shandong, China – April 14, 2026 – Weifang Daoheyi Package Products CO., LTD. (hereafter "Daoheyi"), a leading high-quality packaging manufacturer, announces the successful commissioning of its new fully automated biodegradable plastic bag production line in February 2026. This investment marks a major milestone in the company's strategic expansion and environmental commitment. The line, with three advanced Chinese manufacturing systems and a robust backup power infrastructure, positions Daoheyi as a premier supplier meeting Chinese (GB) and European (EN) standards, with a 2,000-metric-ton monthly capacity.
To meet global demand for eco-friendly alternatives to petroleum-based plastics—driven by strict regulations and growing consumer awareness—Daoheyi invested in a high-speed production line with top Chinese machinery for film blowing, printing, and bag making, engineered for biodegradable resins (PLA, PBAT). Complementing this is an upgraded uninterrupted backup power system with Enerzip generators (Top 10 in China), featuring advanced ATS and parallel grid-connection technology.
This upgrade ensures 24/7 production even during power outages. By combining cutting-edge technology, reliability, and strict quality adherence, Daoheyi is well-positioned to serve the global market with premium certified biodegradable bags, offering superior supply stability and consistency.
Daoheyi’s new facility features a seamlessly integrated three-stage manufacturing line, with industry-leading equipment selected for technological superiority, reliability, and compatibility with biodegradable materials.
Production starts with the Plastar (Wenzhou Aoxiang) Biodegradable Film Blowing Machine. A national high-tech enterprise with 30+ years of experience and 40+ invention patents, Aoxiang represents China’s top blown film technology.
Multi-Layer Co-Extrusion Technology: Ideal for sensitive biodegradable blends (PLA/PBAT/Starch), ensuring uniform mixing, optimal plasticization, and stable film bubble for consistent thickness.
IBC Internal Cooling System: Boosts cooling efficiency, enabling higher line speeds while maintaining film clarity, strength, and flatness—critical for quality printing.
Precision Digital Control: PLC-based system with HMI touchscreen precisely controls key parameters, ensuring minimal thickness variation (±3%) and consistent batch quality.
Energy Efficiency & Material Saving: Energy-saving screws and gravity metering optimize material use and reduce consumption, aligning with green goals.
Certified Quality: Complies with ISO 9001:2015 and CE certification, guaranteeing safety, performance, and EU conformity.
Post-extrusion, the film moves to the Shaanxi Beiren high-speed Gravure/Flexographic Printing Press, a leader in China’s printing industry renowned for precision, speed, and print quality.
Superior Print Quality: Gravure system delivers vibrant, sharp graphics with even ink layers (1-50μm), ensuring clear brand logos, product info, and eco-labels.
High-Speed & High-Efficiency: Designed for mass production, it operates at high speeds without sacrificing accuracy, handling large orders and reducing lead times.
Compatibility with Biodegradable Films: Calibrated for PLA/PBAT films, ensuring strong ink adhesion and preventing blocking/smearing.
Environmental Compliance: Uses water-based and eco-solvent inks, supporting end-to-end sustainability.
The final stage uses the Wenzhou Huachu fully automatic high-speed Bag Making Machine, a leading manufacturer known for robust construction, precision, and versatility in flexible packaging.
Servo-Driven Precision: Advanced servo control ensures accurate cutting, sealing, and punching, meeting dimensional specs and ensuring strong heat seals for biodegradable materials.
High-Speed Production: Reaches 120-200 bags per minute, supporting 2,000-ton monthly output and rapid order fulfillment.
Versatility & Flexibility: Modular design enables quick adjustments to produce various bag styles (T-shirt, flat, garbage, courier) for diverse needs.
Automatic Uninterrupted Operation: Automatic feeding, defect detection, and counting/stacking enable 24-hour unattended operation, maximizing productivity.
To ensure continuous production, Daoheyi invested in a mission-critical backup power system from Enerzip (Top 10 Chinese industrial generator brand). This is a seamless, intelligent power management solution for total reliability.
Automatic Transfer Switch (ATS): Continuously monitors mains power. In case of failure, it auto-starts the generator and transfers load within seconds—no interruption. It switches back seamlessly when grid power returns, eliminating downtime and waste.
Parallel Grid-Connection System: Multiple generators operate in parallel, offering key benefits:
Unmatched Redundancy (N+1 Configuration): Failed/maintained generators are instantly replaced, ensuring zero downtime.
Optimal Fuel Efficiency: Matches generator count to load, keeping units at 75-80% efficiency, reducing fuel use, emissions, and extending engine life.
Scalability & Load Handling: Manages fluctuating production line power demands, from extruders to servo drives.
24/7 Operational Security: Enables 24/7 rotating shifts. Production continues uninterrupted regardless of grid conditions, solidifying Daoheyi’s reliability.
A key advantage is strict compliance with Chinese and EU biodegradable standards, opening global markets.
GB/T 38082-2019: China’s primary standard for biodegradable bags, specifying material, performance, and biodegradation requirements.
GB/T 41010-2021: Mandates ≥90% relative and ≥60% absolute biodegradation rates (for organic components ≥1%) under industrial composting.
Food Contact Safety: Complies with GB 4806.7, suitable for direct food contact.
EN 13432: Key EU standard, requiring 90% biodegradation within 180 days under industrial composting.
Strict Ecotoxicity Standards: Ensures no toxic release, meeting EU environmental requirements.
Daoheyi,s bags use 100% certified biodegradable materials (PLA, PBAT, modified starch), free from non-degradable plastics (PE, PP, PVC). They break down into water, CO₂, and biomass under industrial composting, leaving no toxic microplastics.
The new line significantly boosts Daoheyi’s capabilities:
Monthly Production Capacity: 2,000 metric tons of finished biodegradable bags.
Annual Output: Over 24,000 metric tons, enabling large-scale, long-term contracts with global retailers and distributors.
Operational Model: Continuous shifts leverage backup power for 24/7 production, maximizing capacity and minimizing lead times.
The new production line advances Daoheyi and China,s sustainable packaging industry. By investing in top Chinese technology (Aoxiang, Beiren, Huachu) and Enerzip,s backup power, Daoheyi built a world-class facility excelling in quality, efficiency, and reliability.
Uniquely equipped to meet global demand for GB/EN-certified biodegradable packaging, Weifang Daoheyi is poised to become a leading global eco-friendly packaging partner, driven by commitments to sustainability, innovation, and customer satisfaction.
Contact：Sun
Phone：+86 18678009955
E-mail：info@dhyindustry.cn
Add：NO.8221 of Dongfeng East Street,Kuiwen District,Weifang City,Shandong,China
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