Custom Insert Molding Service

Get strong, high-strength, functional components with insert molding.
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injection insert molding

We offer insert injection molding service that combines metal or other materials into custom molded parts.

Erye is equipped with 30+ sets of advanced molding machines, which allow us to work with various materials, ensuring that the molded parts are not only strong but also optimzied for their intended applications performance.

Our insert molding solution includes:

Insert Molding Service Specifications

We offer a range of insert molding options tailored to meet precise manufacturing requirements. The table below provides an overview of our key capabilities.
Service Details
Process Materials Most plastics and rubber, including custom sourcing, see material list below
Standard Finishes SPI and VDI
Mold Service DFM report and mold flow analysis
Mold Ownership Customer owned with mold maintenance
Mold Cavities Single or multi-cavities
Mold Life Unlimited (If the mold worn out, Erye will cover the cost of new mold)

Materials for Insert Injection Molding

Erye can mold any commercially available thermoplastic and elastomers. Please reach out with your specific resin needs.
ABS

ABS

Full Name

Acrylonitrile Butadiene Styrene

ABS Injection Molding is a manufacturing process where Acrylonitrile Butadiene Styrene (ABS) plastic is melted and injected into a mold to create parts with high precision and strength. ABS is a tough, durable thermoplastic commonly used for products that need to withstand impact and stress, such as automotive components, consumer electronics, and household goods. The injection molding process ensures efficient mass production with consistent quality, offering versatility in design, easy post-processing (like painting), and a cost-effective solution for high-volume production.
The key advantages of ABS injection molding include its excellent strength-to-weight ratio, impact resistance, and ease of customization. It is widely favored across industries for producing reliable, high-performance components.

abs injection molding
PC

PC

Full Name

Polycarbonate

Polycarbonate (PC) material is a high-performance plastic widely used in injection molding for producing durable, transparent, and impact-resistant parts. Known for its excellent strength, optical clarity, and heat resistance, PC is ideal for applications requiring both mechanical durability and visual appeal. It is commonly used in industries like automotive, electronics, medical devices, and consumer goods, where parts need to withstand high temperatures and physical stress.
Injection molding with PC offers advantages such as precise molding of complex shapes and tight tolerances, making it a preferred material for producing high-quality, intricate components.

pc injection molding
PA

PA

Full Name

Polyamide

Polyamide (PA), commonly known as Nylon, is a highly versatile thermoplastic material used extensively in injection molding. Known for its excellent mechanical properties, such as high strength, toughness, and wear resistance, PA is ideal for producing durable parts in automotive, electrical, and industrial applications. It also offers good resistance to chemicals, oils, and abrasion, making it suitable for components that undergo continuous wear or operate in harsh environments.
In injection molding, PA allows for the creation of complex, high-precision parts with excellent surface finish and dimensional stability. Its ability to be reinforced with glass fibers or other additives enhances its strength and rigidity.

pa injection molding
PP

PP

Full Name

Polypropylene

Polypropylene (PP) is a commonly used thermoplastic material in injection molding due to its lightweight, durable, and chemical-resistant properties. It is highly resistant to acids, bases, and organic solvents, making it ideal for applications in industries such as automotive, packaging, medical, and consumer goods. PP also offers low moisture absorption and excellent fatigue resistance, which contributes to the material’s longevity and reliability in various applications.
In injection molding, PP is easy to process, offering good flow characteristics and high molding efficiency. It can be molded into a wide range of complex shapes with fine details.

pp injection molding
PMMA

PMMA

Full Name

Polymethyl Methacrylate

PMMA (Polymethyl Methacrylate), often referred to as acrylic or acrylic glass, is a transparent thermoplastic known for its excellent optical clarity, UV stability, and high impact resistance. It is widely used in injection molding to create clear and durable components, making it ideal for applications in automotive, lighting, signage, medical devices, and consumer products.
In injection molding, PMMA can be processed easily, offering good flowability and the ability to create intricate, high-quality parts. It can be molded into complex shapes with precise detail and a glossy finish.

pmma injection molding
POM

POM

Full Name

Polyoxymethylene

POM (Polyoxymethylene), also known as acetal, is a versatile engineering plastic commonly used in injection molding for parts requiring high strength, low friction, and excellent dimensional stability. It offers outstanding mechanical properties, such as high stiffness, durability, and resistance to wear. POM is also highly resistant to solvents, oils, and fuels, which enhances its reliability in demanding industrial environments.
In injection molding, POM allows for the production of complex, high-precision components with tight tolerances and smooth surface finishes. Its excellent flow characteristics make it easy to process, resulting in efficient production cycles.

pom injection molding
LDPE

LDPE

Full Name

Low-Density Polyethylene

LDPE is a widely used thermoplastic polymer characterized by its lightweight, flexible, and durable properties. LDPE is derived from the polymerization of ethylene monomers, resulting in a material that exhibits a low density of approximately 0.917 to 0.930 g/cmÂł, and has a relatively low melting point, making it easy to mold into a variety of shapes.
In injection molding, LDPE is ideal for producing parts like containers, bottles, films, and tubing. Its low-cost and ease of processing make it a popular choice for high-volume manufacturing.

ldpe injection molding
HDPE

HDPE

Full Name

High-Density Polyethylene

HDPE (High-Density Polyethylene) is a versatile thermoplastic known for its high strength-to-density ratio, making it ideal for injection molding applications that require durability and resistance to impact. It has excellent chemical resistance, low moisture absorption, and can perform well in outdoor environments. These properties make HDPE suitable for manufacturing a wide range of products, including containers, bottles, automotive parts, and pipes.
In injection molding, HDPE is favored for its ease of processing and ability to produce parts with high stiffness and excellent impact resistance. It is highly efficient in mass production due to its fast cycle times and ability to be molded into complex shapes.

hdpe injection molding
PVC

PVC

Full Name

Polyvinyl Chloride

PVC (Polyvinyl Chloride) is a widely used thermoplastic material in injection molding due to its versatility, durability, and ease of processing. It comes in two primary forms: rigid and flexible. Rigid PVC is commonly used for pipes, fittings, and profiles, while flexible PVC is used for applications requiring elasticity, such as cables and flooring. PVC is resistant to chemicals, abrasion, and weathering, making it an ideal material for a broad range of industrial applications.
In injection molding, PVC offers excellent dimensional stability and the ability to mold complex shapes with high precision. It is highly cost-effective and can be easily processed, which makes it suitable for high-volume production.

pvc injection molding
PTFE

PTFE

Full Name

Polytetrafluoroethylene

PTFE (Polytetrafluoroethylene) is a high-performance plastic known for its exceptional chemical resistance, low friction properties, and high thermal stability. It is commonly used in injection molding for applications that demand superior performance in harsh environments, such as in the chemical, pharmaceutical, and food processing industries.
In injection molding, PTFE can be challenging to process due to its high melting point and low flowability, requiring specialized equipment and techniques. However, once molded, PTFE components offer excellent durability, low friction, and resistance to corrosion and electrical conductivity.

ptfe injection molding
PS

PS

Full Name

Polystyrene

Polystyrene (PS) is a thermoplastic material widely used in injection molding for producing rigid, transparent parts with excellent clarity. It is known for its ease of processing, affordability, and ability to create intricate shapes with precise detail. PS is commonly used in applications where transparency is important, such as in packaging, disposable cutlery, and cosmetic containers, due to its crystal-clear finish.
In injection molding, PS is ideal for high-volume production of simple and lightweight parts. It offers good dimensional stability and can be easily molded into complex designs.

ps injection molding
PU

PU

Full Name

Polyurethane

Polyurethane (PU) is commonly used in urethane cast molding due to its excellent flexibility, durability, and ability to mimic various hardness levels. It can be formulated to be soft or rigid, making it suitable for a wide range of applications, from automotive parts to medical devices. PU castings offer good resistance to abrasion, tear, and impact, making them ideal for parts that will be exposed to wear and mechanical stress.
In urethane cast molding, PU is typically used for creating prototypes, low-volume production parts, and customized components. The material is highly customizable in terms of color, texture, and finish, offering manufacturers the ability to meet specific design requirements.

urethane casting
TPU

TPU

Full Name

Thermoplastic Elastomer

TPE (Thermoplastic Elastomer) is a versatile material that combines the flexibility of rubber with the ease of processing typical of plastics. It is known for its excellent elasticity, weather resistance, and ability to be molded at high temperatures. It is also recyclable, making it an eco-friendly choice for many applications.
In injection molding, TPE is a popular choice for producing parts that require soft-touch surfaces, impact resistance, and flexibility, such as seals, grips, and gaskets. Its thermoplastic nature allows it to be easily molded into complex shapes, offering excellent precision and cost-effectiveness.

tpe injection molding
TPU

TPU

Full Name

TPU is a highly flexible and durable material known for its excellent abrasion resistance, tensile strength, and impact resistance. It combines the processing advantages of thermoplastics with the elastic properties of rubber, making it ideal for a wide range of applications, including automotive parts, footwear, medical devices, and electronics. TPU offers good chemical resistance, low-temperature flexibility, and high wear resistance, which makes it suitable for both industrial and consumer products.

TPU is a highly flexible and durable material known for its excellent abrasion resistance, tensile strength, and impact resistance. It combines the processing advantages of thermoplastics with the elastic properties of rubber, making it ideal for a wide range of applications, including automotive parts, footwear, medical devices, and electronics. TPU offers good chemical resistance, low-temperature flexibility, and high wear resistance, which makes it suitable for both industrial and consumer products.

tpu injection molding
TPV

TPV

Full Name

Thermoplastic Vulcanizate

TPV is a high-performance material that combines the processing ease of thermoplastics with the rubber-like properties of vulcanized rubber. TPV is created by blending vulcanized rubber particles with a thermoplastic resin, giving it excellent flexibility, durability, and resistance to heat, oils, chemicals, and weathering. It is known for its high strength, good abrasion resistance, and low compression set, making it ideal for demanding applications such as automotive seals, gaskets, hoses, and electrical connectors. TPV’s ability to be processed using traditional thermoplastic molding techniques while maintaining the properties of rubber makes it a versatile material for a variety of industries.

tpv injectionn molding
Silicone

Silicone

Full Name

Silicone Rubber

Silicone rubber is a highly flexible and durable material used in injection molding to produce a wide range of products. Known for its excellent heat resistance, flexibility, and electrical insulation properties, it is ideal for applications requiring high performance in extreme conditions. Silicone rubber maintains its properties even at high temperatures and resists aging, UV exposure, and ozone damage.
In injection molding, silicone rubber is commonly used to manufacture seals, gaskets, medical devices, and electrical components. Its unique combination of high elasticity and low compression set ensures long-lasting performance. The material is also biocompatible, which makes it suitable for medical and food-grade applications.

silicone injection molding
EPDM

EPDM

Full Name

Ethylene Propylene Diene Monomer

EPDM (Ethylene Propylene Diene Monomer) rubber is commonly used in compression molding for applications requiring excellent weather, ozone, and UV resistance. It maintains its flexibility and durability even under extreme temperatures, from -40°F to 275°F, making it ideal for outdoor and automotive applications.
In compression molding, EPDM rubber is used to create seals, gaskets, weather strips, and hoses. Its resistance to aging, water, and steam makes it a preferred material for industries such as automotive, construction, and electronics, ensuring long-lasting and reliable performance in demanding environments.

epdm compression molding
NR

NR

Full Name

Natural Rubber

Natural Rubber (NR), is a highly versatile material widely used in compression molding for producing durable and flexible parts. Known for its excellent elasticity, resilience, and abrasion resistance, NR is ideal for applications that require high flexibility and tensile strength. It also offers good resistance to wear, tear, and environmental conditions.
In compression molding, NR is heated and compressed into molds to form parts with complex shapes and fine details. This process ensures uniformity and consistency in the final product, making it efficient for large-scale production.

nr compression molding
NBR

NBR

Full Name

Nitrile Butadiene Rubber

NBR commonly known as nitrile rubber, is a synthetic rubber known for its excellent resistance to oils, fuels, and chemicals. NBR’s key properties include superior resistance to oil, grease, and petroleum-based products, making it particularly valuable in the automotive, industrial, and oil and gas industries.
The compression molding process involves placing the NBR compound into a heated mold where it is compressed to take the shape of the mold cavity, ensuring precise and consistent part production. This method is ideal for manufacturing parts that require tight tolerances and complex shapes.

nbr compression molding
CR

CR

Full Name

Chloroprene Rubber

CR commonly known as Neoprene, is a synthetic rubber with excellent weather, ozone, and aging resistance. It is widely used in compression molding due to its versatile properties, including good flexibility, high tensile strength, and resistance to oil, heat, and chemicals. CR is especially valuable in applications that require durability in challenging environments, such as automotive, electrical insulation, and marine products.
The material’s excellent flow characteristics allow for compression molding of complex and durable parts, such as gaskets, seals, and protective covers. Neoprene is able to maintain its physical properties over time, even under exposure to environmental stressors.

cr compression molding
SBR

SBR

Full Name

Styrene-Butadiene Rubber

SBR (Styrene-Butadiene Rubber) is a synthetic rubber commonly used in compression molding for manufacturing durable and cost-effective parts. It offers excellent resistance to abrasion, aging, and heat, making it ideal for applications requiring toughness and longevity.
In compression molding, SBR rubber is used to produce components such as seals, gaskets, and automotive parts. Its versatility and ease of processing enable efficient production of high-quality molded products that meet strict specifications for performance and durability.

sbr compression molding
IIR

IIR

Full Name

Isobutylene isoprene rubber

IIR (Butyl Rubber) is a synthetic rubber known for its excellent air and moisture impermeability, making it an ideal choice for sealing applications. It is highly resistant to chemicals, UV light, and oxidation, which makes it suitable for use in harsh environments.
In compression molding, IIR butyl rubber is used to create durable, high-quality components like seals, gaskets, and vibration dampeners. The material’s ability to withstand extreme temperatures and its flexibility make it perfect for molding complex shapes with tight tolerances.

iir compression molding

Inserts Types for Insert Molding

Metal

Plastic

Magnet

Glass Fiber

Ceramic

Insert Molding Surface Finishing Standard

To meet diverse aesthetic and functional requirements, Erye offers mold surface finishes according to both the SPI and VDI standards. Our injection mold standards guide the texture and smoothness of molded surfaces, ensuring that each part achieves the desired finish, from mirror-like surfaces to textured patterns.
Finishing Description Price Range SPI Grades
glossy surface SPI A:
Glossy Finish
Provides a highly reflective surface, ideal for aesthetic applications such as consumer products. $$$ SPI A1, A2, A3
semi-gloss surface SPI B:
Semi-Gloss Finish
Offers a moderate sheen, balancing gloss and matte, suitable for parts needing some visual appeal without being overly shiny. $ SPI B1, B2, B3
matte surface SPI C:
Matte Finish
Features a non-reflextive surface that reduce glare, often used for functional parts where aesthetics are less critical. $$ SPI C1, C2, C3
texture surface SPI D:
Dull Finish
Enhances grip and durability, commonly applied to functional components to improve handling and reduce wear. $$$ SPI D1, D2, D3

Gallery of Insert Molding Parts

Advantages of Insert Molding with Us

At Erye, we specialize in delivering high-quality insert-molded parts that seamlessly integrate metals, ceramics, or other components with plastics or rubber. With advanced machinery, expert craftsmanship, and over 40 years of experience, we ensure superior part durability, precision, and performance tailored to your unique requirements.

Insert Molding Applications

Insert Molding FAQs

Inserts can include metal, ceramic, glass, or other plastics.
Mold lifespan depends on material and usage but generally lasts thousands of cycles. At Erye, if the mold worn out, we will open a new mold for you.
Yes, we can integrate multiple inserts into a single component.
Insert molding combines components in a single step, while overmolding adds layers of material onto a pre-formed part.
Yes, prototype samples are available for approval before full-scale production.
Yes, our engineering team provides design optimization services.
We need design files, material specifications, and production volume.

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