Inquiry
Blog
Learn about the latest industry knowledge and company updates.
Jan 08,2026
High-Strength Tough Antibacterial Polyethylene Plastic and Its Preparation Method
With increasing demands for hygiene safety and durability in medical, food packaging, and consumer goods, traditional polyethylene materials show limitations in strength, toughness, and antibacterial properties. This project aims to develop a polyethylene material that combines high mechanical performance with long-lasting antibacterial function, suitable for high-end packaging, medical devices, and household products.
1. Project Background
With increasing demands for hygiene safety and durability in medical, food packaging, and consumer goods, traditional polyethylene materials show limitations in strength, toughness, and antibacterial properties. This project aims to develop a polyethylene material that combines high mechanical performance with long-lasting antibacterial function, suitable for high-end packaging, medical devices, and household products.
2. Material Characteristics
High Strength & Toughness: Molecular structure modification improves tensile strength by approximately 40% while maintaining good elongation and impact resistance.
Long-Lasting Antibacterial Property: Incorporation of safe inorganic antibacterial agents achieves over 99% inhibition rate against common bacteria such as E. coli and Staphylococcus aureus.
Excellent Processability: Suitable for injection molding, blow molding, and extrusion, enabling mass production of complex components.
3. Key Steps in Preparation Method
Material Pretreatment: Dry polyethylene base resin and antibacterial masterbatch at 80–90°C for 4–6 hours to prevent bubbles during processing.
Blending Modification: Use twin-screw extruder to uniformly blend polyethylene, toughening agent, and antibacterial additive at 180–200°C.
Molding Process Optimization: Adjust injection temperature (170–210°C) and holding pressure (50–70 MPa) based on product geometry (e.g., thin-walled vs. thick-walled) to ensure dimensional accuracy and surface quality.
Post-Processing: Trim flash after cooling, followed by surface cleaning and inspection to ensure defect-free products.
4、Quality Control
Raw Material Quality Control
A strict raw material approval system is established. Polyethylene base resin, antibacterial masterbatch, and toughening agents must be sourced from certified suppliers. Each batch is tested for melt index, density, antibacterial agent content, and baseline mechanical properties to ensure consistency. Key focus is on verifying the compatibility and thermal stability of antibacterial agents with polyethylene to prevent efficacy degradation during processing.
Process Quality Monitoring
Multiple stages of the production process, from compounding to molding, are monitored. During compounding, extrusion temperature (175-205°C) and torque are monitored in real-time to ensure homogeneous dispersion. In the molding stage, sensors track temperature, pressure, and cycle time, while vision systems conduct online inspections for appearance and dimensions. Key process parameters are recorded every 2 hours, with full dimensional inspection of the first and last pieces every 200 cycles.
Previous: None
Next: Thermoplastic Elastomer Pelletizer with Efficient Debris Collection
Latest News
Guangdong Jinyuan Plastic Technology Co., Ltd.
Building 13, Zone C, Wanyang Innovation Hub, Yangqiao Town, Boluo County, Huizhou City, Guangdong Province, China
