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Medical plastic injection molding Medical plastic injection molding
Medical plastic injection molding Medical plastic injection molding
Medical plastic injection molding Medical plastic injection molding


Medical plastic injection molding

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Plastic injection molding

Injection molding, also known as plastic injection molding. Injection molding has the advantages of fast production speed, high efficiency, automatic operation , color varieties, and precision dimension. Injection molding can produce complex parts, it is suitable for mass production and complex shape products.

plastic injection mold.jpg

Plastic injection molding products have great varieties, and a wide range of applications:

Medical devices,daily necessities, mechanical equipment,and there are also complicated injection structure parts, functional parts and special applications of precision parts. 

In words, the plastic injetion molding parts are applied in all areas of life. It has become an indispensable material for production and consumption.

Plastic injection molding is widely used in medical injection molding. With low cost, medical grade plastic can be reused without sterilization, which is suitable for use as the raw material for disposable medical equipment. In addition, injection molding is simple, using its plasticity can be processed into a variety of useful medical plastic devices.

medical grade plastic

Plastic has excellent chemical inertness and biological safety. These performance advantages make plastics widely used in medical devices. The seven commonly used medical plastics are polyvinyl chloride (PVC), polyethylene (PE), polypropylene (PP), Polycarbonate (PC),Acrylonitrile Butadiene Styrene (ABS), Polytetrafluoroethylene (PTFE).


Processing conditions




Injection molding, extrusion, blowing film, rolling. Usually no drying.

Low cost, wide range of applications, easy processing, good chemical resistance.

Mechanical properties: poor thermal stability.

According to market estimates, about 25% of medical plastic products are PVC.

Hemodialysis tubing, breathing mask, oxygen tube and so on


Low water absorption, generally no need to dry

Low water absorption, generally no need to dry

LDPE:Medical packaging and intravenous injection containers.

HDPE:Artificial urethra, artificial lung, artificial trachea, artificial larynx, artificial kidney, artificial bone, orthopedic repair material.

UHMWPE: Artificial lung, artificial joint and so on.


Injection molding, extrusion, blow molding or film drying: low water absorption, no need drying.

Non-toxic, tasteless, good mechanical properties, chemical stability and heat resistance. Good insulation, low water absorption, good solvent resistance, oil resistance, weak acid resistance, weak base, good shape, no environmental stress cracking problems. However, molding shrinkage, the thickness of the manufacture of products easily trapped. The surface is inert and hard to print and bond

Disposable syringes, connectors, clear plastic caps, pipettes, parenteral nutrition packs, dialysis membranes


Generally use injection molding, less extrusion tube and blown film

Particularly good impact strength, thermal stability, transparency, gloss, inhibit bacterial properties, flame retardant properties and anti-pollution.The biggest disadvantage is that the plastic parts are easy to crack, and the fatigue strength is poor.

Hemodialysis filters, surgical tool handles,

needleless injection systems, perfusion instruments, blood centrifuge bowls and pistons and so on.


Injection molding

ABS has a certain rigidity, hardness, impact resistance and chemical resistance, resistance to radiation and ethylene oxide sterilization.

Good cold resistance, oil resistance, water resistance, chemical stability

Surgical tools, drum clips, plastic needles, tool boxes, diagnostic devices and hearing aid enclosures, especially for large medical equipment.


Injection molding, extrusion molding.

Excellent performance, non-general thermoplastics can be compared, so there is a "plastic king," said. The coefficient of friction is the lowest plastic, with good biocompatibility.

Processing difficult, forming difficulties

Artificial blood vessels directly implanted in the human body apparatus

PVC MASK with Valve.jpg

Xiamen Better Silicone Co.,ltd has rich experience on producing plastic injection molding, such as medical grade plastic injecton molding, precision injection molding parts and so on.

Plastic injection molding parts

plastic parts.JPG plastic cap

plastic cover POS plastic cover.jpg


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