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In medical device injection molding, engineering plastics that meet the requirements of the medical industry are typically selected. These plastics possess varying degrees of biocompatibility, antibacterial properties, and chemical resistance.
Injection molding is a common plastic processing technique where molten plastic is injected into a mold under high pressure, allowed to cool and solidify within the mold cavity, ultimately forming the required part or product. Medical device injection molding can be used to produce various medical device components, equipment housings, and consumables.
Medical-grade plastics are plastic materials specifically manufactured for use in medical devices and equipment. These plastics must meet stringent hygiene, biocompatibility, antibacterial, and chemical stability standards before they can be used in medical projects. Medical-grade plastics must comply with medical device regulations and standards in various countries or regions, such as those of the U.S. Food and Drug Administration (FDA).
Polyetheretherketone (PEEK) exhibits excellent mechanical properties, including high strength and hardness. It can be used stably at high temperatures of approximately 260°C for extended periods and has good corrosion resistance to many chemicals, making it suitable for medical environments involving cleaning, sterilization, and medications. Additionally, PEEK is a relatively lightweight plastic with sufficient biocompatibility, often used to manufacture implants and surgical instruments.
Polyoxymethylene, also known as polyacetal or POM, possesses outstanding mechanical properties and is frequently used to process highly wear-resistant components such as gears and bearings. POM has good resistance to many chemicals and high stability against fuels, solvents, and many oils and fats. Moreover, POM is highly processable and is a common material for injection molding.
Polyetherimide, also known as Ultem or PEI plastic, is a high-performance engineering plastic with excellent high-temperature stability, dimensional stability under temperature changes, high strength, wear resistance, chemical stability, and a degree of biocompatibility. It can be used to manufacture medical device components, transparent medical packaging, and medical equipment housings.
Polyphenylsulfone, also known as PPSU, can withstand high temperatures of about 200°C and has good stability against solvents and acidic or alkaline substances. PPSU is also radiation-resistant, making it suitable for use in radioactive environments. PPSU is transparent and can be used to manufacture transparent medical packaging and steam sterilization equipment.
Apart from the above, plastics such as polyethylene (PE), polypropylene (PP), polycarbonate (PC), silicone, polyester (PET), fluoropolymers (PTFE), and ABS are also widely used in the medical field.
When selecting a medical device injection molding factory, key considerations should include the factory's certifications and compliance with standards, extensive experience and expertise, advanced equipment and technological level, material selection and supply chain management capabilities, robust quality control systems, compliance and regulatory adherence, delivery times and service reliability, reputation, and manufacturing costs.
We chose Essai as our medical device injection molding company because it has advanced injection molding technology and equipment that can produce high-precision, high-quality medical device products. At the same time, Essai focuses on quality control and customer service, ensuring that products meet medical standards, meet customer needs, and provide quality solutions.
