Horizon’s Injection Molding Capabilities

Plastic Injection Molding

Plastic injection molding is a reliable and efficient process for producing high-volume, high-precision plastic parts. By injecting molten plastic into custom molds, it enables consistent quality, complex geometries, and excellent surface finishes. Widely used across industries such as automotive, electronics, and consumer goods, this method supports a broad range of materials and colors. We ensure quality throughout the process — from mold making to final inspection — to meet your exact specifications.

Liquid Silicone Rubber Molding

Liquid silicone rubber molding is a precision process for producing flexible, durable, and biocompatible silicone parts. It involves injecting liquid silicone into heated molds, enabling complex shapes, fine details, and excellent consistency. Ideal for medical, automotive, and consumer applications, LSR parts offer heat resistance, chemical stability, and long-term performance. Our team ensures strict quality control from mold design to final production.

Overmolding & Insert Molding

Overmolding and insert molding are advanced injection molding techniques used to combine multiple materials or components into a single, durable part. Overmolding involves molding a soft material over a rigid base, enhancing grip, protection, or aesthetics. Insert molding embeds metal or other components into plastic during the molding process, improving strength and functionality. These methods are ideal for automotive, electronics, and medical applications, offering design flexibility and part consolidation.

Metal Injection Molding Service

Metal Injection Molding (MIM) is a manufacturing process that combines metal powder and binder materials to produce complex, high-strength metal parts through injection molding, followed by debinding and sintering. It enables high-precision production of small, intricate components with excellent mechanical properties, making it ideal for medium to large-volume manufacturing in industries like medical, electronics, automotive, and aerospace.

Material Options For Injection Molding

ABS

ABS (Acrylonitrile Butadiene Styrene) is a popular thermoplastic widely used in injection molding due to its excellent mechanical properties and versatility.

Renowned for its robustness, high impact resistance, and easy moldability, ABS finds it’s applications ranging from automotive components to consumer electronics.

Products crafted from ABS through injection molding often exhibit superior surface finish, dimensional stability, and resistance to various environmental stressors, making it a favored choice for many manufacturers.

Nylon

Nylon, often referred to by its chemical name, Polyamide (PA), is a versatile thermoplastic lauded for its excellent balance of strength, durability, and thermal resistance.

Injection-molded products crafted from Nylon exhibit superior mechanical properties, good dimensional stability, and resistance to many chemicals and environmental factors. Given its adaptability and intrinsic toughness, Nylon remains a favored choice for manufacturers seeking high-performance solutions in both high and low-temperature environments.

Predominantly utilized in automotive, electronics, and textile industries, Nylon is known for its impressive wear resistance and low coefficient of friction.

 

PP (Polypropylene)

PP (Polypropylene) is a widely used thermoplastic known for its excellent chemical resistance, low density, and good balance of mechanical properties, making it a popular choice in injection molding.

Valued for its toughness, fatigue resistance, and cost-effectiveness, PP is commonly used in applications such as automotive parts, household goods, medical devices, and packaging solutions.

Injection-molded PP products typically feature good dimensional stability, resistance to moisture and many chemicals, and the ability to withstand repeated flexing, making it a practical and versatile material for a wide range of industries.

PC (Polycarbonate)

PC (Polycarbonate) is a high-performance thermoplastic renowned for its exceptional strength, optical clarity, and impact resistance, making it a preferred material for precision injection molding applications.

Known for its toughness, heat resistance, and transparency, PC is widely used in industries such as automotive, electronics, medical devices, and safety equipment—including lenses, housings, and protective gear.

Injection-molded PC parts typically offer excellent dimensional stability, flame retardancy, and the ability to maintain mechanical integrity under demanding conditions, making it an ideal choice for both functional and aesthetic components.

 

TPU (Thermoplastic Polyurethane) 

TPU (Thermoplastic Polyurethane) is a flexible and durable thermoplastic elastomer widely used in injection molding for applications requiring both elasticity and strength.

Celebrated for its excellent abrasion resistance, high elasticity, and resistance to oils and chemicals, TPU is commonly found in footwear components, protective cases, seals, gaskets, and industrial parts.

Injection-molded TPU products offer a unique combination of rubber-like flexibility and thermoplastic processability, resulting in components that maintain performance across a broad range of temperatures and demanding use conditions.

PMMA(Polymethyl Methacrylate) 

PMMA (Polymethyl Methacrylate) is a transparent thermoplastic widely used in injection molding for its excellent optical clarity and weather resistance.

Renowned for its glass-like appearance, high light transmittance, and good dimensional stability, PMMA finds its applications in areas such as lighting components, automotive lenses, displays, and household goods.

Products crafted from PMMA through injection molding often exhibit superior surface gloss, UV resistance, and long-term clarity, making it a favored choice for manufacturers seeking both aesthetic appeal and durable performance.

 

Available surface finish options for injection molding services

SPI Texture

The SPI (Society of the Plastics Industry) surface finish standard is widely used to define the texture of injection mold surfaces, which directly affects the appearance and feel of plastic parts.
SPI finishes are categorized into four main classes: A, B, C, and D.
Class A refers to high-gloss polished surfaces, Class B includes semi-gloss finishes that provide moderate smoothness, Class C represents matte or satin surfaces, Class D involves textured or blasted surfaces.

VDI Texture

The VDI is commonly used to define the texture of injection molded parts, especially for matte or textured finishes.
VDI grades are typically created through EDM (Electrical Discharge Machining) or etching, and they range from fine to very rough textures. The most widely used range is VDI 12 to VDI 45.
VDI textures are often chosen not only for visual appearance but also for functional reasons, such as improving grip, reducing fingerprints, or hiding parting lines and defects.

Screen printing

Silk screen printing is a process that applies ink onto a product surface through a mesh screen. It’s widely used for logos, text, and patterns with strong adhesion and broad material compatibility.

Water transfer printing

Water transfer printing is a process that applies patterns to complex surfaces using a water-soluble film. It’s suitable for plastic, metal, and other materials, often used for decorative finishes.

Hot stamping

Hot stamping is a decorative process that uses heat and pressure to transfer metallic foil onto the surface of plastic parts, enhancing visual appeal and brand recognition.

Spray painting

A protective and aesthetic coating is applied to the surface, offering a smooth, uniform finish with customizable colors and textures.

Injection Molding FAQ’s

What is the injection molding process?

Raw plastic pellets are first dried and, if necessary, mixed with coloring agents. Inside the machine the pellets are heated and mixed until the resin is semi-liquid. This liquid is then injected under high pressure through a nozzle and into the gate and runner system of the mold. Resin fills the cavity, forming the shape of the part. It’s then cooled, the part ejected, and the process begins again.

What are the advantages ofinjection molding?

Once a tool is made, plastic injection molding is the fastest and most cost-effective way of manufacturing hundreds of thousands of finished plastic parts. Molded parts have excellent surface finishes with reliable and repeatable dimensional tolerances. And there are resins available to suit most common applications.

How long does it take to make an injection mold tool?

Depending on the complexity of the design and possible heat treatment, a plastic injection mold tool can be made in five days to two weeks.

What plastics can you use with injection molding?

Injection molding can use almost any type of plastic that can also be combined together. This unmatched versatility makes injection molding so popular and suitable for some of the most demanding industries in the world. You can check out the selection of available materials and finishes our injection molding service handles on this page.