Injection Molding Services
Unlock precision and speed with our injection molding services.
Get your custom prototype molding and production molded parts efficiently.
30t-1800t
INJECTION MOLDING
MACHINES
1 pc
NO
MOQ
10K+
INJECTION MOLDINGS
MADE MONTHLY
100+
PLASTIC &
METAL MATERIALS
What is Injection Molding?
Injection molding is the process of injecting molten plastic into a mold cavity, rapidly cooling it, then ejecting the solidified plastic part. It is the most widely used manufacturing process for plastic parts and the most affordable route to mass production. Once the metal mold or tooling has been made, hundreds, thousands, or millions of plastic duplicate parts can be made in a short timeframe, with the effective cost-per-part reducing with each additional molding as the cost of the mold is amortized. Injection molding is compatible with a very wide range of materials ¡ª including thermoplastics, thermosets, and even metals ¡ª which can be easily mixed with color pigments and other additives to tweak the function and appearance of the moldings. Furthermore, the injection molding process offers excellent consistency between units, as the tooling remains constant throughout.
At ParticlePrototype, we offer a range of injection molding services, from affordable low-volume prototyping to part production, using thermoplastics, thermosets, or metals. Our team of experienced molding specialists can guide you to the right solution, whether you need rapid aluminum tooling for a fast prototype or a more durable solution for larger production runs. Unlike many molding companies, we do not specify a minimum order quantity.
Liquid Silicone Rubber Molding Service
Inert and biocompatible, liquid silicone rubber can be used for molded medical items such as fluid management and respiratory devices
Metal Injection Molding Service
Suitable for small and detailed metal parts, MIM is cost-effective in large volumes and wastes less material than CNC machining.
Plastic Injection Molding Service
The most popular custom plastic injection molding process, thermoplastic, is suitable for consumer products, automotive components, and many other applications.
Our Injection Molding
Capabilities
We are always ready for the challenges of all types of injection molding parts, such as tight tolerances, thin wall, small draft angle, undercuts, complex part geometry, non-defect surface finishes, etc.
Overmolding
Overmolding uses injection molding to create a part from multiple materials. This process adds an injection molded layer of material over an existing injection molded component. The overmolding process produces chemically bonded parts made from multiple materials.
The overmolding process can be cheaper than creating and assembling components separately. The process can build layered parts from scratch or add a resistant outer layer to existing plastic parts and tools. An example overmolded product is a toothbrush with a solid plastic body and rubberized grip.
Insert Molding
Insert molding is similar to overmolding, but the substrate is not necessarily plastic and does not have to be produced via injection molding. For example, the process can be used to add a plastic coating to a pre-fabricated metal part.
Common parts made with insert molding include sharp handheld tools, such as scalpels that consist of a metal blade partially housed within a plastic handle. This manufacturing process is also frequently used to create parts with bushings, clips, and fasteners, which can be placed within the mold.
Addition Injection Molding Options
ParticlePrototype basic injection molding services, we also offer two variants of the process - overmolding and insert molding. Both of these can be useful in specific situations.
How Custom Plastic
Injection Molding Works
Injection molding uses an injection molding machine made up of three sections: the injection unit, the clamping unit, and the mold or tooling. Such machines are large, expensive, and require expert operators.
During the injection molding process, plastic material in the form of small pellets or granules is fed into a large hopper. The machine moves the pellets from the hopper to a heated barrel, where they melt down into a liquid. Within the barrel, a reciprocating screw ¡ª which functions as a kind of plunger ¡ª pushes the molten plastic towards the check valve. When enough material is ready to be injected, high pressures are applied, and the material is forced into the mold through a network of channels called sprues and runners. The plastic solidifies, taking the shape of the mold cavity, and is then ejected from the mold with the aid of ejector pins. The process then repeats, with cycle times ranging from a few seconds to upwards of a minute.
When ordering custom injection molding parts from ParticlePrototyoe, we will first review your design and send a quotation. When quantities and pricing have been agreed, we will quickly fabricate the tooling and, if required, send a sample molding before starting production.
