Insert molding is a more effective alternative to the assembly of discrete parts by means of soldering, adhesives or fasteners. Read More…
Leading Manufacturers
LTM Plastics
Denver, CO | 303-592-9548For 50 years, LTM Plastics has been a leading manufacturer of injection molded plastics. When working with LTM Plastics, our customers can be assured that they are getting high quality products at a competitive price. We pride ourselves on our team’s communication and collaboration with our customers to meet their needs.
MSI Mold
Shelby Township, MI | 248-275-1978If you are in need of injection molded plastic parts that are of consistent quality, look no further than MSI Mold! We have over 30 years of experience in design, production, and tooling of custom plastic parts.
GSH Industries, Inc.
Cleveland, OH | 440-238-3009You won’t find better quality injection molded plastics anywhere else in the industry. We have built ourselves up from a small manufacturing company to a large company with decades of experience.
Britech Industries
Stuart, FL | 772-286-9278We may have started small, but today, we offer our products and services to companies around the world. We are dedicated to our customers, and our goal is to offer better service and pricing to any customer no matter the size.
Hi-Rel Plastics & Molding
Riverside, CA | 951-354-0258At R.M.Tool, we provide custom CNC Machining to help our customers solve some of their toughest machining needs. Our state-of-the-art CNC machining department is equipped with Milling, Turning and Wire EDM Machining Centers. We can process materials such as Steel, Stainless, Aluminum, and other Exotic Materials. We strive to always please our customers by always delivering quality products. From design to finished product, R.M.Tool is your one stop shop for all of your CNC machining needs.
Molded Devices, Inc.
Tempe, AZ | 951-509-6918Call Molded Devices for a fast, competitive quote on plastic molding, plastic injection molding, and medical injection molding services. A wide range of standard & proprietary caps, covers & containers plus custom components for all your needs. We are your one-stop for design consult, quick prototyping, custom formulations & secondary operations!
ZETWERK
Mesa, AZ | 818-486-1522ZETWERK provides high-quality injection molded plastics with precise configuration of all shapes and geometrics. Our products have a range of .4gms to 2kgs for part size and 15T to 1250T for press size. ZETWERK is ISO 9001:2015 and AS9100D certified. Our Injection molding plants are IATF 16949:2016 and ISO 13485:2016 certified.
Insert Molding - GSH IndustriesSome benefits of plastic insert molding include: lower costs, since multiple tasks are being done at once both labor and assembly time is saved; greater durability, the plastic resins mold to the insert more securely than other joining methods; and lighter components, plastic resin weighs less than metal connectors which would typically have joined the components. Insert molding serves industries such as electronics, medical, military, industrial, automotive, aerospace, food processing, commercial, residential, cosmetic and construction.
Insert Molding - GSH IndustriesTypical insert injection molding applications include cable embedded electronics, medical devices, printers, thermostats, aerosol nozzles, electrical plugs, screwdrivers, needle hubs, bifurcations and threaded fasteners. Materials used during the insert molding process includes polystyrene, polyvinyl chloride, polyethylene, polypropylene, thermoplastic elastomers and many more engineering plastics.
Insert molding is done through an injection molding machine. On the top of the machine is a hopper, through which the plastic granules enter the barrel of the machine. In the barrel, the plastic granules are heated until they become molten plastic. A reciprocating screw inside of the barrel carries the plastic granules into the mold cavity by way of a nozzle. The nozzle leads directly into the mold cavity. The mold is attached to a moveable platen so that it can push into and pull back from the mold cavity. An insert, which can be metal or plastic, is placed into the mold cavity just before molding.
The molten plastic is then injected into the cavity through the nozzle and molds around the insert piece. Once the plastic has cooled, the mold is opened and the newly joined components are removed. Two types of bonding occur during insert molding; mechanical and molecular. Molecular bonding takes place by either shrinking the encapsulating plastic resin around the insert as it cools or surrounding the irregularities on the insert’s surface by the plastic resin.
Mechanical bonding, however, only takes place when the insert’s material is the same as or very similar to the plastic resin. In addition there are three types of insert molding: low volume, 100-1000 parts that the operator inserts all at once; medium volume, 1000-10,000 parts that the operator loads in multiples and is aided by a loading device; and high volume, 100,000 parts or more that are loaded automatically.
