Manufacturing service
Custom Injection Molding
Plastic injection molding support from DFM and mold trials through repeat production and secondary operations.
- Mold and part DFM
- T0, T1, and T2 trial stages
- Plastic part production
- Texture, color, and assembly review
Service overview
From molded-part DFM to trial samples and repeat production.
Kewei supports custom plastic injection molding projects through part design review, mold concept coordination, tooling, trial stages, appearance approval, and repeat production. The review connects part geometry with resin behavior, mold action, ejection, gate location, and inspection needs.
T0, T1, and T2 terminology is used to organize early mold trials and correction stages; the actual trial plan depends on the tool, part risk, appearance criteria, and customer approval requirements.
Representative molded plastic part families with different colors, wall structures, and functions.
Key capabilities
Process planning connected to the drawing and end use.
The manufacturing route is reviewed around geometry, material behavior, critical features, appearance, inspection, and downstream assembly.
T0, T1, and T2 trial stages
Plastic part production
Texture, color, and assembly review
Typical parts
Parts commonly reviewed for injection molding.
Plastic housings
Covers and bezels
Functional clips
Connectors
Transparent windows
Internal structural parts
Sealing components
Electronic enclosures
Industries
Applications supported across engineering teams.
Materials
Material options linked to technical guidance.
Surface Finishes
Surface Finishes reviewed for material and application fit.
Tolerances and design guidance
Define what is functionally critical.
Molded dimensions are influenced by resin shrinkage, wall thickness, ribs, flow, cooling, mold temperature, gate location, and part ejection. Functional fits and critical dimensions should be prioritized for tool adjustment and inspection.
DG 01
Maintain practical and consistent wall thickness where possible.
DG 02
Use draft on molded faces to support reliable ejection.
DG 03
Balance ribs, bosses, snap features, and screw points to reduce sink and distortion risk.
DG 04
Mark texture, gloss, color, gate, ejector, and parting-line expectations clearly.
Quality assurance
Inspection planning starts with the drawing.
Inspection points are selected from the controlled drawing, functional risk, process behavior, appearance criteria, and documentation requested for the project.
Resin and color requirement review
Trial sample dimensional and appearance inspection
In-process checks for molding consistency
Final part, finish, assembly, and packaging review
CMM inspection supportOptical measurement supportCalipers and micrometersThread and pin gaugesInspection documentation support
Manufacturing workflow
A controlled route from RFQ to shipment.
The exact route changes with process and project risk, but each stage keeps the approved drawings and requirements in view.
- 01
Part DFM and mold concept
Review wall thickness, draft, parting line, gate, ejection, resin, and appearance.
- 02
Tooling and trial preparation
Coordinate mold manufacture, fitting, trial conditions, and sample requirements.
- 03
T0, T1, and T2 review
Inspect samples, record issues, and coordinate approved tool or process corrections.
- 04
Production and release
Mold approved parts, complete secondary operations, inspect, pack, and ship.
Related case study
A structured project type, not an invented customer story.
Project-type example
Plastic Electronic Housing
Project-type example awaiting verified mold-trial records
Review project structureFAQ
Injection Molding questions from engineering and sourcing teams.
What should I provide for a injection molding quotation?
Send a 3D CAD file when available, a 2D drawing for critical dimensions and tolerances, material, quantity, finish, inspection, and delivery requirements. An engineer reviews the package before quotation.
Does Kewei support mold trials and sample stages?
Yes. Tooling projects can be organized around trial stages such as T0, T1, and T2, with sample review and correction actions defined by the part and approval requirements.
Can color, texture, inserts, and assembly be reviewed?
Yes. Share color references, texture specifications, cosmetic zones, insert drawings, mating parts, and assembly expectations so they can be included in DFM and quotation review.
How is lead time determined?
Lead time depends on geometry, material availability, quantity, tooling or setup requirements, surface finishing, inspection, and delivery needs. Timing is reviewed with the quotation rather than presented as a fixed promise.
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View serviceStart your RFQ
Upload your drawings and receive an engineer-reviewed quotation.
Share the process, material, quantity, finish, tolerance, and delivery requirements. contact@kewei-kw.com / +86-13929495765