Custom Thermoplastic Injection Molding Built Around Your Application

Forest City Technologies provides custom thermoplastic injection molding solutions for manufacturers that need more than a molded part. We help customers solve application-specific challenges involving part performance, material selection, fastening, sealing, vibration control, assembly efficiency, and long-term durability.

From thermoplastic rubber (TPR) components to overmolded fasteners, inserts, and multi-material assemblies, Forest City Technologies brings practical molding experience, engineering support, and production discipline to help turn complex requirements into reliable manufactured parts.

What Is Thermoplastic Injection Molding?

Thermoplastic injection molding is a manufacturing process used to produce repeatable, high-volume plastic parts by heating thermoplastic resin until it flows, injecting it into a precision mold, and cooling it into a finished component. Because thermoplastics can be processed efficiently and selected for a wide range of mechanical, chemical, thermal, and appearance requirements, the process is well suited for custom molded parts used in automotive, industrial, electrical, consumer, and specialty applications.

For Forest City Technologies, thermoplastic injection molding is not simply a production method. It is a platform for solving design and assembly challenges by combining the right material, tooling approach, insert strategy, and molding process for the end-use environment.

FCT Thermoplastic Molding Capabilities

Custom thermoplastic injection molded components
Thermoplastic rubber (TPR) molding for flexible, rubber-like performance
Overmolding of fasteners, inserts, bushings, pins, sleeves, and other components
Insert molded parts that combine metal and plastic into one integrated assembly
Multi-material solutions for grip, sealing, insulation, vibration dampening, and impact resistance
Application-specific material guidance based on performance requirements
Production support from concept and prototype review through repeat manufacturing

Specialized Expertise in Thermoplastic Rubber (TPR)

Thermoplastic rubber, commonly referred to as TPR, combines rubber-like flexibility with the processing advantages of thermoplastic materials. This makes it a strong fit for applications that require softness, grip, resilience, impact absorption, vibration dampening, or sealing performance while still benefiting from injection molding efficiency.

Forest City Technologies’ experience with TPR is especially valuable for customers who need flexible molded features integrated into functional assemblies. TPR can be used for soft-touch surfaces, molded protective features, flexible contact points, sealing lips, caps, grommet-like components, anti-slip features, and vibration-isolating elements.

Common TPR Application Needs

Soft-touch or ergonomic surfaces
Non-slip contact areas
Flexible protective covers or caps
Vibration and noise reduction features
Sealing and cushioning elements
Impact-resistant molded details
Components that need rubber-like performance with thermoplastic processing efficiency

Overmolding of Fasteners and Inserts

One of Forest City Technologies’ key differentiators is the ability to combine molding expertise with a deep understanding of fasteners, inserts, and engineered assemblies. Overmolding and insert molding allow customers to integrate separate parts into one functional component, reducing secondary assembly steps and improving consistency.

By molding thermoplastic or TPR material around a fastener, insert, pin, bushing, sleeve, bracket, or other component, manufacturers can improve handling, protection, sealing, insulation, grip, alignment, or attachment performance. This is especially useful where a molded feature must stay securely attached to a metal component or where the final assembly needs to eliminate adhesives, manual placement, or extra fastening operations.

Examples of Overmolded and Insert Molded Solutions

Fasteners with molded sealing or cushioning features
Threaded inserts molded into plastic housings or brackets
Metal pins, sleeves, or bushings encapsulated in thermoplastic material
Overmolded handles, grips, caps, or protective surfaces
TPR features molded onto rigid substrates for flexibility, sealing, or anti-slip performance
Plastic-to-metal assemblies designed to reduce secondary labor and improve repeatability

Real-World Applications

Thermoplastic injection molding supports a wide range of real-world applications where performance, durability, and manufacturing repeatability matter. Forest City Technologies can support custom molded parts used in assemblies that require protection, positioning, fastening, sealing, vibration control, tactile performance, or component integration.

Industrial equipment: molded covers, protective components, anti-slip surfaces, vibration-dampening features, and insert molded assemblies.
Electrical and electronic assemblies: insulated inserts, connector-related components, protective housings, strain relief features, and molded interface parts.
Consumer and commercial products: soft-touch features, grips, caps, handles, feet, bumpers, and protective molded details.
Fastener and hardware applications: overmolded fasteners, molded-in inserts, protective coatings, sealing features, and assembly aids.
Sealing and cushioning applications: molded TPR elements, flexible contact surfaces, caps, plugs, grommet-like features, and vibration-isolating components.

Automotive Applications

Automotive programs often require molded components that can withstand demanding assembly environments while supporting repeatable performance. Thermoplastic injection molding, TPR molding, overmolding, and insert molding can help automotive manufacturers and suppliers reduce part count, simplify assembly, protect critical interfaces, and improve long-term function.

Potential Automotive Use Cases

Overmolded fasteners used to add sealing, cushioning, grip, or protective features
Insert molded brackets, clips, retainers, and mounting features
TPR components used for vibration dampening, anti-rattle performance, or flexible contact surfaces
Protective molded caps, plugs, covers, and isolators
Connector-adjacent components requiring insulation, alignment, or strain relief
Interior and under-hood components where material selection must account for temperature, chemical exposure, wear, and assembly conditions
Noise, vibration, and harshness related molded features that help reduce movement, impact, or contact noise within an assembly

For automotive customers, Forest City Technologies’ value is not only in molding the part, but in helping evaluate how the molded component will function in the full assembly. That includes reviewing geometry, material compatibility, insert retention, sealing approach, process repeatability, and manufacturability.

Why Work with Forest City Technologies?

Forest City Technologies brings a practical, application-focused approach to custom molding. Many molding projects begin with a performance issue, assembly challenge, or customer requirement that cannot be solved with an off-the-shelf molded part. Forest City Technologies helps bridge the gap between design intent and production reality by evaluating the material, part geometry, tooling needs, insert strategy, and final application together.

FCT Expertise Includes

Understanding how molded components perform inside larger assemblies
Experience with fastener-related applications and overmolded hardware
Guidance on TPR and thermoplastic material options
Support for insert retention, encapsulation, sealing, and overmold adhesion considerations
Manufacturing experience focused on repeatability, quality, and scalable production
A solutions-oriented approach that helps customers reduce complexity and improve part performance

Design and Engineering Considerations

Successful thermoplastic molding depends on early alignment between product requirements, material behavior, tooling strategy, and production expectations. Forest City Technologies can help customers think through key questions before tooling and production decisions are finalized.

What temperature, chemical, mechanical, or environmental exposure will the part experience?
Does the part need flexibility, grip, sealing, insulation, or vibration dampening?
Will the molded material be bonded to or mechanically retained around an insert?
Does the design require TPR, a rigid thermoplastic, or a multi-material approach?
Can molding reduce secondary assembly, adhesives, manual labor, or part count?
What tolerances, repeatability, and quality requirements must be maintained in production?