ANTITECK - Provide Lab Equipment, Industrial Automation, Medical Molding and Turnkey Solution.

Medical Injection Molding

Medical Molding, medical device plastic molding for medical, pharmaceutical, dental and biological industries

What is medical injection molding?

Medical injection molding is a method used to produce plastic or silicone resin components for medical use. Plastic or silicone components will most likely contain equipment used for surgical procedures or components that will be placed inside the human body. This type of shaping process is different from common plastic injection molding, because there are medical elements in this process. Every part of the medical plastic injection molding process must be absolutely aseptic. From the beginning of the process to the final use of the components, a sterile operating area environment must be established. This is particularly true in applications where molded components are used on the human body to enhance or replace the functionality of human body components.

Advantages of medical injection molding

1. High quality and high precision: 
Medical devices and equipment made by medical precision injection molding have higher precision and more reliable quality, reducing the risk of operational negligence and equipment failure.

2. High production efficiency: 
Medical precision injection molding can quickly produce high-quality medical products, which not only improves production efficiency, but also effectively reduces the scrap rate and saves production costs.

3. Low cost: 
Compared with traditional manufacturing technology, medical precision injection molding can produce a larger number of high-quality medical products, while also reducing production costs, thereby improving the competitiveness of products.

Medical injection molding applications

Below medical device components are partial medical molding cases
Medical device housing
Imaging Components
In-Vitro Diagnostics
Surgical Devices & Instruments
Home Healthcare Devices
Labware - Pipette Tips
Labware - Cuvettes
Dental Products
Dental Products
Prenatal Care
Emergency Care
IV Cannula
Interventional Catheter
BCT - Caps
Ventilator Component
BMC Ventilator Component
Oxygenerator Component

Medical Injection Molding

What type plastics can be used in medical injection molding?

Here are plastics commonly used in medical molding and its recommend wall thickness.
ResinWall thickness (mm)
Acetal (POM)0.76 - 3.05
Acrylic (PMMA)0.025 - 0.150
Acrylonitrile Butadiene Strene (ABS)1.14 - 3.56
Nylon (PA)0.76 -2.92
Polybutylene Terephthalate (PBT)2.032 - 6.350
Polycarbonate (PC)0.040 - 0.150
Polyether Ether Ketone (PEEK)0.020 - 0.200
Polyetherimide (PEI)0.080 - 0.120
Polyethylene (PE)0.030 - 0.200
Polyphenylsulfone (PPSU)0.030 - 0.250
Polypropylene (PP)0.040 - 0.150
Polystyrene (PS)0.025 - 0.125
Thermoplastic Elastomer (TPE)0.025 - 0.125
Thermoplastic Polyurethane (TPU)0.025 - 0.125

What ANTITECK help you in medical injection molding?

ANTITECK provide serives as below:

1. Provide high precision, strict and tight tolerances molds

2. Medical device or components predesign and development support

3. Contract manufacturing medical injection molding plastic parts or components

4. Medical injection molding techniques support

5. Medical injection molding room or workshop design support

6. Medical parts or components automatically assembly machine design and make it become true

How to order medical injection molding service?

1. Contact us via below form or sent email to [email protected] directly.
2. After both sides initial communication, you send samples to ANTITECK, our mold expert will analyze and evaluate, then will provide initial proper proposal.
3. Basis on your requirement, we will supply below options:
      A) Only provide you molds, you can manufacture medical parts easy
      B) If you only need high quality with strict tight tolerances medical parts, we will sign a contract manufacturing agreement, we supply you products, you no need to pay attention more time to take care molding process.
      C) If you need to build a new molding factory, we can help you on this.
      D) If you need ONE STOP SHOP solution, we can help you from products or parts predesign and development, molds creating, molding techniques support, medical parts automatically assembly production line design and manufacture ... ... etc.


    Question 1: What are some examples of medical devices made with injection molding?
    Answer 1: Some common medical devices made with injection molding include syringes, vials, inhalers, medical trays, catheters, valves, connectors, drug delivery devices, surgical tools, and components for devices like glucose meters and blood pressure monitors. Injection molding is used to produce both disposable and reusable plastic parts for the medical industry.

    Question 2: How does injection molding allow for precise tolerances needed for medical devices?
    Answer 2: Injection molding uses steel molds that can be precisely machined to yield highly repeatable tolerances down to +/- 0.001 inches or fewer. The injection molding process produces net shape parts that require little to no secondary machining. This enables complex geometries within tight tolerances at high production volumes.

    Question 3: What types of plastics are commonly used in medical injection molding?
    Answer 3: Common plastics used in medical injection molding include polyethylene, polypropylene, ABS, polycarbonate, acrylic, nylon, PVC, and TPE. The material is selected based on the strength, sterilization method, biocompatibility, clarity, and cost required for the application.

    Question 4: How does injection molding reduce costs for medical device manufacturing?
    Answer 4: Injection molding provides very high production rates in the thousands per hour, which spreads out the initial investment in the molds over many parts. Automation reduces labor costs. Low scrap rates and minimal secondary processing also improve cost efficiency. Overall, injection molding significantly reduces per part costs compared to other processes.

    Question 5: What are some size and geometry limitations of injection molded medical parts?
    Answer 5: Typical injection molded parts range from a few grams to several pounds. Wall thicknesses usually range from 0.5 mm to 6 mm. Smaller parts may require special micro-molding techniques. Geometries with extreme variations in wall thickness or deep recesses can be difficult to fill evenly. Undercuts often require side actions in the mold.
    Question 6: How does injection molding improve quality control versus other manufacturing methods?
    Answer 6: The repeatability of the injection molding process enables very tight process control. Automated monitoring of process parameters like temperature, pressure, and cycle time ensure each part meets specifications. Parts can also be readily inspected for defects visually or with automated equipment. This level of control allows detecting issues and correcting them quickly.

    Question 7: What are some regulatory requirements for injection molded medical devices?
    Answer 7: Injection molded medical devices must meet regional regulatory requirements like FDA approval in the US, CE marking in Europe, and PAL approval in Japan. The materials, manufacturing process, sterilization method, biocompatibility testing, and other factors must conform to medical device regulations and quality standards.

    Question 8: How does injection molding enable mass production of medical devices?
    Answer 8: Injection molding production rates can exceed thousands of parts per hour. Multiple cavities in a mold allow multiplying part output. The high initial cost of molds is offset by very low incremental costs for each additional part. This enables cost-effective mass production of medical components to serve large patient populations.

    Question 9: What are some innovations in injection molding technology for the medical industry?
    Answer 9: Some innovations include multi-material molding, micro-molding, rapid tooling like 3D printed molds, clean room molding, automation with robotics, and advanced process monitoring and control systems. These help improve quality, reduce costs, and enable more complex medical device designs.

    Question 10: How does injection molding allow for customization and patient-specific medical devices?
    Answer 10: Quick tooling changes enable adjusting mold cavities for custom parts. Injection molding can also be used to produce tailored devices like hearing aid shells, dental aligners, and prosthetics based on patient scans. The flexibility of injection molding allows producing customized medical products cost-effectively even down to batch sizes of one.
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