Injection Molded Plastics/

Thermoplastics Injection Molding

The thermoplastics injection molding process is the most common method used to process thermoplastics, due to its ability to fabricate parts with a range of design variances, from simple shapes to high precision parts of geometric complexity. Thermoplastics, also referred to as thermosoftening plastics, differ than other plastic materials due to their ability to become liquid when heated and to freeze into a glassy, solid state when cooled sufficiently.

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GSH Industries, Inc.
Cleveland, OH
440-238-3009
GSH Industries is a supplier of injection molded plastics and plastic coatings. We serve a wide range of industries such as automotive, consumer, electrical, and more, with innovative custom injection molding. Visit our website today for more information on our plastic injection molded parts. Our experience with plastic injected moldings has allowed us to position ourselves into the next century.
 
Caplugs
Buffalo, NY
888-227-5847
Caplugs offers the largest, most expansive line of injection molded plastics. Stocked caps, plugs, tubes, wraps, edge liners & nettings, plus extensive custom capabilities. Injection molding presses from 7 to 400 tons. Small, high precision injection molded parts & up to 18" diameter. We are pioneers in the industry by experimenting with materials & molding techniques to make parts that perform.
 
All-State Plastics
City of Industry, CA
800-544-0370
With over 30 years of experience, All-States Plastics has specialized in plastic molding, mold making and machining. On top of our numerous capabilities, our customer service is unbeatable. We have the know-how you need and continue fine tuning to surpass our high standards for customer service & manufacture injection plastic moldings. We are armed with expanded visions of what yet may be.
 
Total Quality Plastics, Inc.
North Prairie, WI
888-335-9769
ISO 9001:2000 certified plastic molding company with complete, cutting-edge capabilities for small intricate molded plastic components to large parts (1500 tons). We specialize in insert molding, in-mold decorating, over-molding, gas-assist, ultrasonic welding, machining, hot stamping, pad printing & others. Full product development, testing & prototyping capabilities, plus stocking programs.
 
Xcentric Mold & Engineering, Inc.
Chesterfield, MI
586-598-4636
Xcentric Mold & Engineering makes buying custom plastic injection molded parts more convenient than ever. ISO 9001:2008 certified, we are leaders in rapid prototype & rapid injection molding with low cost production. No matter what kind of part you need, no matter how complicated, we`ll put it in your hands faster. Our molding expertise means no geometry limits for quality parts done right.
 
Penguin, LLC
Sturgis, MI
269-651-9488
With injection molding presses from 260 ton to 1000 ton, Penguin has the ability & resources for every step of your plastic molding requirements - from a competitive part quote to part & product development support start to finish. Penguin has an established infrastructure like no other. We can simply mold parts for you or completely assemble & ship your finished products anywhere in the world.
 

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Sturgis Molded Products
Sturgis, MI
269-651-9381
Sturgis Molded Products (SMP) is your innovative partner in plastic injection molding. With the latest technologies in scientific molding, our in-house services include tool design, production & prototype tool building, engineering and full product launch support. SMP serves the industrial, medical, automotive & consumer markets, bringing cost effective plastic solutions. Call us for your needs.
 
Johnson Plastics
Harrison, AR
870-741-5087
Since 1971, Johnson Manufacturing has been a custom plastic injection molding company with a nation-wide reputation. Manufacturing anything from shopping carts to caster wheels to agricultural tools, we specialize in filling your needs, whatever they are. We have experience with the use of polyethylene, polypropylene, styrene, polycarbonate, nylon and other materials. Call today for more details.
 
Britech Injection Molded Plastics
Stuart, FL
772-286-9278
For over 25 years, Britech, a supplier & manufacturer of injection molded plastics, has specialized in helping customers succeed in the low inventory, J-I-T environment of industrial production. Our rapid plastic molding process gives design engineers a fast & affordable way to get real injection molded parts in low volume quantities. We specialize in custom injection molded thermoplastic parts.
 
Hi-Tech Mold and Tool, Inc.
Pittsfield, MA
413-443-9184
Hi-Tech Mold & Tool was established in 1983. We are a full service injection molder of engineering thermoplastics and silicone, supplying custom molded parts for a variety of markets including Medical, Aerospace, Telecommunications, Electronics and more. We have a comprehensive secondary operations department for assembly, finishing, and packaging. We are ISO 9001:2000 and AS9100 certified.
 
American Precision Products
Huntsville, AL
800-889-7674
American Precision Products is a custom injection molding firm offering expert solutions in thermoplastic, thermoplastic elastomer & thermoset moldings. For commercial & government applications we provide short & long molding runs. Specialties include injection molding, insert molding, tight tolerance requirements, assembly & contract manufacturing. Contact us for all your molding & forming needs.
 
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Thermoplastics Injection Molding

Thermoplastic polymers differ from thermosetting polymers as because thermoplastics can be remelted and remolded. As a result, thermoplastics are the most common type of plastic used in injection molding processes. The thermoplastic materials that are most often processed using this process are acrylonitrile butadiene styrene (ABS), polyamides (such as nylon), polycarbonate, fluoropolymers, polysulfones and polyacrylates. Common applications of thermoplastic injection molding include caps, fasteners, plugs, connectors, inserts, tubing and containers. A wide range of industries that utilize thermoplastic injection molding includes electronics, plumbing, medical, automotive, aerospace, manufacturing and telecommunications.

Thermoplastics injection molding utilizes three main types of injection molding machines. The first type is a hydraulic oil injection molding machine that uses the force of hydraulic fluids to move the mold through the machine. Next in popularity is the toggle plastic molding machine. Toggle machines use mechanical links to advance the mold in the machine. Hybrid hydraulic/toggle machines are beginning to emerge in the injection molded plastics industry. Hybrid machines are used to eliminate some of the problems of other injection plastic molding machines, such as slow processing rates of parts and rapid wear and tear of machines. No matter the differences in the machine, the process itself remains the same and begins by heating the barrel of the machine. Next, thermoplastic pellets or granules are fed into a hopper where a screw pushes them to the heated barrel. In the barrel, the pellets or granules are heated to the melting point. The molten thermoplastic material is then injected into the cavity of a split die chamber/mold, which is then clamped shut. The thermoplastic resin cools as water or other fluids circulate through the cooling system of the mold, extracting the heat. The molded thermoplastic part is held in the mold under high pressure until the part solidifies. The thermoplastic part is finally ejected from the plastic mold, and the process begins again.