The medical injection molding process involves melting medical-grade plastics and molding them into the desired shape of medical devices. This process creates strong, durable equipment with impeccable surface finishes and precise measurements.

When it comes to medical products, such as syringes, gloves, and masks, the ability to produce high volumes with consistency is crucial. This is where injection molding excels. With this technique, once the mold is created, thousands of identical parts can be produced without the need for maintenance.

Polyetheretherketone (PEEK) is a high-quality thermoplastic known for its exceptional resistance to harsh environments, including radiation, high temperatures, chemicals, and wear and tear conditions. PEEK is perfect for creating medical and surgical implants and offers impeccable dimensional stability, even after being exposed to stress.

Medical injection molding ensures that the produced components meet all necessary regulatory requirements set by the FDA.

Liquid silicone injection molding involves heating silicone to a liquid state and then molding it into various shapes, making it a versatile solution for developing medical products. Silicone, a plastic polymer, is specifically designed to meet the needs of the medical industry. However, it’s important to note that silicone molds may not be as durable as aluminum or steel molds, making this technique more suitable for small quantities and initial prototyping stages.

Similar to overmolding, the insert molding technique involves molding a secondary component over an existing part, or the insert. What sets insert molding apart is that it is a single process and can be used with various materials, such as plastics, metals, or alloys.

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Injection molding guarantees tight tolerances and dimensional accuracy, which are crucial in the medical field. With injection molding, even the smallest deviations can be avoided, reducing the risk to patients.

Gingery publishing has two books on plastic injection molding: Plastic Injection Molding Machine and Plastic Injection Molding Attachment for the Drill Press. The first book details the construction of a full injection molding machine including the mechanism used to push the ram into the injection cylinder. The second book features a smaller machine that relies on an existing mechanism from a drill press to push the ram. Using the drill press attachment design reduces the complexity and space required for the project. For these reasons, I decided to build the drill press attachment injection molder. The temperature control for the heater is also different in the two books. The drill press attachment book uses a purchased PID controller, thermocouple and purchased cartridge heaters. I do not know the details of the other controller because I do not own the book.

Plastic injection molding involves melting plastic polymers at high temperatures to create sterile and contaminant-free medical equipment. By reshaping the plastics in aluminum or steel molds, manufacturers can produce precise and customized medical devices that meet the highest standards of hygiene.

Polyethylene (PE) is a versatile, durable medical-grade plastic polymer composed of thousands of ethylene polymers, giving it impressive tensile strength and rigidity. PE is also highly compatible with biological tissues and can withstand harsh environmental conditions, including sterilization. Thanks to these properties, PE is widely used in the medical field for manufacturing joint prostheses, connectors, tubing, pharmaceutical containers, and more.

I had been thinking about giving one of the Gingery injection molding machines a try for a long time. I was hesitant to try because I didn't know how well it would work (I hadn't seen any of the machines online). I also didn't have a good method of creating molds for the machine. After I purchased my CNC milling machine (Sieg X3) I had a tool to produce molds of significant complexity to make it really interesting so I decided to give it a try.

Overmolding is an advanced technique that involves molding one or two components over an existing structure, resulting in a strong and durable grip. This two-step process, also known as two-shot molding, may have a longer production cycle, but the benefits are well worth it. With overmolding, manufacturers can create ergonomic handles to improve the comfort of everyday devices, which adds value and functionality to a wide range of items.

Polycarbonate (PC) is transparent and has excellent mechanical properties. It’s tough, flexible, and resistant to abrasion, breakage, and temperature. Polycarbonate is also highly compatible with bodily tissues, making it ideal for manufacturing various medical equipment, from clear masks to protective gear and oxygenators.

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Did you know that injection molding is revolutionizing the medical device industry? This innovative manufacturing process ensures the creation of high-quality, precise, and cost-effective medical devices.

Injection molding is not only automated, but it also significantly reduces labor costs. With computer-controlled precision, each part is efficiently produced, resulting in lower costs per unit.

Polystyrene (PS) is a high-quality engineering-grade plastic that’s not as flexible as others, but it has exceptional mechanical properties and is compatible with body tissues. Polystyrene offers excellent dimensional stability, making it ideal for creating critical medical components like petri dishes, culture trays, and diagnostic parts.

Our injection mold manufacturing process is ideal for products and plastic parts that require large-scale production. With scalable injection molding machines, we can easily adjust to meet your needs with consistent, high-quality production every step of the way. Contact us today to learn more about injection molding for medical devices.

With additive manufacturing, medical professionals can now rely on high-quality injection parts that meet the strictest industry standards. Whether it’s intricate surgical tools or complex implantable devices, injection molding for medical devices ensures that every component is flawlessly fabricated for optimal performance. This medical parts manufacturing process is common to develop a wide range of components, devices, and parts, such as:

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Silicone, a unique chemically inert compound similar to synthetic rubber, offers exceptional mechanical properties and compatibility with biological tissues. With its exceptional flexibility, silicone is the go-to medical-grade plastic polymer for manufacturing a wide range of products and devices, such as catheters, connectors, and tubing.

Polypropylene (PP) is a highly effective plastic polymer commonly used in medical injection molding. With its exceptional strength and resistance to cracking, radiation, impact, temperature, wear, and tear, it’s no surprise that it is a top choice in the healthcare industry. From life-saving syringes and connectors to essential knee and hip replacements, PP is the preferred material for producing critical components in healthcare.

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Are you searching for high-quality, precise mold manufacturing solutions for your medical devices? At Remington Medical, we offer excellent contract manufacturing services that ensure consistent, high-volume production.

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- The injection molder attachment is designed to be used with a drill press with a spindle travel of at least 3 inches. I use a drill press stand that was originally intended for mounting a hand held drill. My drill press stand does not have a stroke of 3 inches but I found that if I set the stand height so I have to lift the injection cylinder over the mold I can still eject the last bit of plastic from the cylinder. - In the book when the depth of holes is given the depth is to the point of the hole not the depth of the full diameter. - So far I have made all of my molds out of aluminum using a CNC milling machine but the description for the injection molding machine book states that molds can be made with castable epoxy or plaster of paris. There are not any details of how to make molds out of these materials in the injection molding attachment book. The injection molding machine book may have more details (I don't know). The description of the book does say that it has instructions on how to make a knob mold (used for the adjustable table in the injection molder) and a mold that creates a small plastic container with a snap lid. These items are not in the injection molding attachment book. - The video shows that I used a toaster oven to preheat the mold. I have found that preheating the mold is not required for the parts I have been making. All of the parts pictured on this page have been made without a preheated mold. I am guessing that for longer thinner parts preheating the mold will help prevent the plastic from hardening before the mold is filled. - A lot of my molds look spotted and the parts I make have little nubbins sticking out of them. The material I use for most of my molds is aluminum that I have melted and cast into billets. The billets tend to have porosity in them. When I inject the plastic into the mold the small pores in the aluminum are filled with plastic resulting in the nubbins that stick out from the plastic parts. Since I use scrap aluminum for the molds and scrap plastic for the parts all of the material I use for plastic injection molding is free. Dial Caliper Thumb Wheel Hook with Nubbins - For the hockey stick shaped pen cap below I used a long removable insert to form the inside of the pen cap. The insert proved very difficult to remove for the first molded part. I had to heat the insert with a torch to partially melt the plastic before I could get it off. After the first mold for this part I started rubbing wax from a candle on the insert prior to molding and that worked like a charm. As long as I use wax as a mold release the insert comes out without any difficulty.

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