Injection Molding
Tooling and molding for your repeat plastic parts.
FOR YOUR GRIP, FIT & PROTECTION
Custom Overmolding Servicesfor Your Functional Parts
Add grip, comfort and protection with a material pair suited to your application.
Review your interface, tooling scope and sample criteria before production.
NDA available on request.
Material Pairing
Select the right material pair for your application.
Interface Review
Review your design, adhesion and tooling approach.
Sample Approval
Confirm your part’s fit and function before production.
Dallas-Area Support
Coordinate your engineering review and delivery requirements.
Build the Function Your Product Needs
The overmolding process forms a second material over a substrate to add grip, protection or other functions. Review 4 applications and 4 approval inputs for your project.
Give Your Hand a Stable Contact Surface
For overmolding grips and handles, define the contact area, expected loads and cleaning conditions.
- Mark the surfaces your user holds.
- Keep mounting and service features accessible.
Grade selection, interface design and validation are project-specific.
Choose Your Material Pair
Compare overmolding materials for your substrate, hardness and service conditions. Review TPE overmolding and TPU overmolding by exact grade.
- Confirm overmolding material compatibility before tooling.
- Review overmolding adhesion for the selected grades.
Grade selection, interface design and validation are project-specific.
Keep Your Grip Attached at Its Edges
Review the overmolding mechanical interlock and transitions around the areas your hand loads.
- Mark layer thickness and edge radii in your CAD.
- Define exposed rigid surfaces and shutoff boundaries.
Grade selection, interface design and validation are project-specific.
Approve Your Grip for Its Working Conditions
Agree the loads and surface feel your sample must satisfy before production.
Bond & Retention
Define overmolding bond strength criteria for your service conditions.
Fit & Tolerances
Agree overmolding tolerances for mating surfaces and layer boundaries.
Appearance
Set your limits for flash, color, texture and gate marks.
Functional Checks
Confirm load, use cycles and sealing checks where applicable.
Your Approval Plan
Methods, quantities and acceptance criteria are confirmed for your project.
Test Method
Define the relevant test methods.
Conditioning
Set any required conditioning.
Sample Quantity
Agree the number of samples.
Acceptance Criteria
Define clear acceptance limits.
Protect Your Housing’s Exposed Edges
For consumer electronics overmolding, map impact-prone corners while keeping ports and fasteners usable.
- Identify visible and mating surfaces.
- Define handling, cleaning and service exposure.
Grade selection, interface design and validation are project-specific.
Pair Your Bumper with Your Substrate
For thermoplastic overmolding, review exact resin grades and molding temperatures; material family names alone do not establish a bond.
- Check substrate heat resistance and dimensional stability.
- Specify color, hardness and applicable exposure.
Grade selection, interface design and validation are project-specific.
Keep Your Housing Interfaces Usable
Review overmolding shut off design around connector openings, screws and mating faces.
- Keep critical datums on agreed measurable surfaces.
- Define bumper transitions and protected openings.
Grade selection, interface design and validation are project-specific.
Agree How Your Housing Will Be Approved
Define your sample checks before production.
Bond & Retention
Define overmolding bond strength criteria for your service conditions.
Fit & Tolerances
Agree overmolding tolerances for mating surfaces and layer boundaries.
Appearance
Set your limits for flash, color, texture and gate marks.
Functional Checks
Confirm load, use cycles and sealing checks where applicable.
Your Approval Plan
Methods, quantities and acceptance criteria are confirmed for your project.
Test Method
Define the relevant test methods.
Conditioning
Set any required conditioning.
Sample Quantity
Agree the number of samples.
Acceptance Criteria
Define clear acceptance limits.
Define What Your Seal Must Contain
For overmolding seals, specify the mating surface, fluid, temperature and compression conditions.
- Mark the complete sealing path.
- Define the leak requirement and test setup.
Grade selection, interface design and validation are project-specific.
Match Your Seal to Its Exposure
Select the elastomer grade around fluid compatibility, compression and your substrate. Hardness alone does not establish sealing performance.
- Share the fluid and temperature range.
- Agree the exact material pair and conditioning.
Grade selection, interface design and validation are project-specific.
Control Your Seal’s Mating Geometry
Review overmolding wall thickness, seal compression and shutoff boundaries against your mating assembly.
- Identify the mating gap and critical datums.
- Review gates and parting lines on the sealing path.
Grade selection, interface design and validation are project-specific.
Approve Your Seal in Its Assembly
A visual sample cannot prove a leak rating. Agree the fixture, medium, pressure and acceptance limit for your test.
Bond & Retention
Define overmolding bond strength criteria for your service conditions.
Fit & Tolerances
Agree overmolding tolerances for mating surfaces and layer boundaries.
Appearance
Set your limits for flash, color, texture and gate marks.
Functional Checks
Confirm load, use cycles and sealing checks where applicable.
Your Approval Plan
Methods, quantities and acceptance criteria are confirmed for your project.
Test Method
Define the relevant test methods.
Conditioning
Set any required conditioning.
Sample Quantity
Agree the number of samples.
Acceptance Criteria
Define clear acceptance limits.
Give Your Control the Surface Your User Needs
Soft touch overmolding can add a compliant contact surface to a rigid knob or control.
- Define touch area, use force and cleaning conditions.
- Keep the shaft or pivot interface usable.
Grade selection, interface design and validation are project-specific.
Select Feel Without Losing Your Fit
Compare soft touch overmolding services using the exact substrate and elastomer grades, not color or softness alone.
- Specify hardness and texture with your sample criteria.
- Check chemical exposure and substrate compatibility.
Grade selection, interface design and validation are project-specific.
Retain Your Soft Surface Around the Core
Design your retention and layer boundaries around control loads and the rigid mounting interface.
- Review mechanical retention where the bond needs support.
- Protect shaft bores and mating surfaces from flash.
Grade selection, interface design and validation are project-specific.
Approve Your Control’s Feel and Function
Review retention, motion and fit with the mating shaft or mechanism before production.
Bond & Retention
Define overmolding bond strength criteria for your service conditions.
Fit & Tolerances
Agree overmolding tolerances for mating surfaces and layer boundaries.
Appearance
Set your limits for flash, color, texture and gate marks.
Functional Checks
Confirm load, use cycles and sealing checks where applicable.
Your Approval Plan
Methods, quantities and acceptance criteria are confirmed for your project.
Test Method
Define the relevant test methods.
Conditioning
Set any required conditioning.
Sample Quantity
Agree the number of samples.
Acceptance Criteria
Define clear acceptance limits.
Your Overmolding Design Guide
Edges & Transitions
Review your layer thickness around edges and transitions. Use the selected grade and geometry to set practical limits.
Retention & Shutoffs
Review your retention geometry, exposed boundaries and substrate support before tooling.
Your Tooling Scope
Review your overmolding mold, substrate supply, tool ownership and sample requirements.
Approve the Bond. Confirm the Fit.
Agree the checks before your samples are made.
Bond & Retention
Define your bond criteria and conditioning. An overmolding peel test needs an agreed specimen, method and acceptance limit.
Critical Dimensions
Agree tolerances and measurement conditions for your mating features; review soft surfaces separately from rigid datums.
Appearance & Function
Confirm flash limits, color, texture and applicable functional checks before production.
Prototype overmolding samples must use an agreed material pair and test scope. Inspection records do not replace required functional validation.
Bond & Retention · Fit & Tolerances →See What Your Quote Includes
The cost of overmolding depends on tooling, materials, quantities and validation.
Substrate Supply
Agree who supplies your base part, its drawing revision, incoming checks and lot identification.
Tooling & Samples
Confirm ownership, sample approval and change scope before your tool is built.
Production Quantities
Share first-order and annual demand. Low volume overmolding and repeat orders need a reviewed handling plan.
Inspection & Delivery
Agree records, part protection, packaging, delivery terms and your ship-to location.
Answers Before You Commit
Compare with Insert Molding →Is overmolding expensive?
Tooling and handling add cost. Potential assembly savings depend on your design, materials and quantity. Compare your overmolding quote with the separate-part assembly route; confirm minimum order and tooling timing in the quotation.
What files are needed for an overmolding quote?
Send substrate and finished-part CAD, drawing revisions, both material grades, first-order and annual quantities, critical interfaces and acceptance requirements. For customer-supplied substrates, agree incoming inspection, storage and responsibility for rejected lots.
Overmolding vs Two Shot Molding: Which Fits Your Part?
Overmolding can place a preformed substrate into a second tool. Two-shot molding produces the material stages within a coordinated molding cycle. Review geometry, material compatibility, quantity and tooling investment before choosing the route; two-shot equipment availability must be confirmed for your project.
