Materials and Properties of Injection Molding Medical Plastics

Injection molding medical plastics is a key process in medical device manufacturing. It involves heating and melting thermoplastic medical plastics, injecting the melt into a mold, and then cooling and solidifying it to form high-precision, high-performance medical parts. The following are commonly used materials and properties for injection molding medical plastics:

1. Polypropylene (PP)

Properties: Non-toxic, odorless, chemically resistant, excellent heat resistance (melting point approximately 171℃), stable mechanical properties.

Applications: Disposable syringes, infusion sets, prescription bottles, connectors, etc.

Advantages: Low cost, can withstand autoclaving, suitable for large-scale production.

2. Polyethylene (PE)

Properties: High mechanical strength, good ductility, chemically resistant, but poor thermal stability.

Applications: Medical packaging, intravenous injection containers, artificial urethras, etc.

Advantages: Excellent processing performance, suitable for various molding processes.

3. Polycarbonate (PC)

Properties: Highly transparent, tough, heat-resistant (can withstand 120℃ steam sterilization), good biocompatibility.

Applications: IV connectors, blood centrifuge bowls, medical device housings, etc. Advantages: Combining high strength and transparency, suitable for precision parts manufacturing.

4. Polyetheretherketone (PEEK)

Characteristics: High temperature resistance (approximately 260℃), high strength, chemical corrosion resistance, and excellent biocompatibility.

Applications: Implants, surgical instruments, orthopedic parts, etc.

Advantages: High long-term stability, suitable for high-end medical fields.

5. Acrylonitrile-Butadiene-Styrene Copolymer (ABS)

Characteristics: High rigidity, impact resistance, smooth surface, and easy processing.

Applications: Medical instrument housings, equipment accessories, etc.

Advantages: Low cost, can replace metal parts, reducing equipment weight.

6. Polyvinyl Chloride (PVC)

Characteristics: Flexible or rigid options available, chemical corrosion resistance, and good flame retardancy.

Applications: Hemodialysis equipment, tubing, cardiac catheters, etc.

Advantages: Versatile, adaptable to different medical scenarios.

Qingdao Xueyu Molding Products Co., Ltd. is mainly engaged in the design and manufacturing of injection molds, injection molding and secondary processing (spraying, pad printing, ultrasonic welding, stamping), etc. For more information about injection molding medical plastics, please contact us.

Website: www.xyzmould.com

Address: No.18 Henan Head Road, Henan Head Community, Jihongtan Street, Qingdao Industrial Park, Shandong Province, China

Email: wangmiaotian8@163.com