Chinese mold engineer reviewing plastic injection mold CAD design

Plastic Injection Mold Making

We provide custom plastic injection mold making services for prototype molds and production molds. Our mold making process covers drawing review, DFM evaluation, mold structure planning, tooling manufacturing, mold trial, modification, and preparation for injection molding production.

Precision Mold manufacturing precision is controlled according to part structure, tooling requirements, material shrinkage, and final production needs.
Tolerance Mold and part tolerance can be evaluated based on part size, plastic material, wall thickness, mold structure, and molding conditions.

Service Overview

Plastic Injection Mold Making

Yinuomold provides custom plastic injection mold making services for B2B customers who need plastic part development, mold tooling, and production preparation.

Our mold making service is suitable for custom plastic parts used in consumer electronics, home appliances, industrial equipment, automotive-related parts, and other plastic component projects.

Our Mold Making Scope

Our plastic injection mold making service may include:

– Drawing and 3D file review
– DFM evaluation
– Mold structure planning
– Prototype mold making
– Production mold making
– Mold trial
– Sample inspection
– Mold modification
– Preparation for injection molding production

Mold Types

We can support different mold requirements depending on the project stage and production quantity.

Common mold types may include:

– Prototype molds
– Production molds
– Single-cavity molds
– Multi-cavity molds
– Insert molds
– Overmolding molds

Project Evaluation

Before mold making, we usually review the part structure, plastic material, wall thickness, draft angle, tolerance requirements, surface finish, gate position, ejection method, and estimated production quantity.

This evaluation helps reduce mold risks and improve production stability before mass production.

Common Plastic Materials

The final plastic material should be selected based on product function, appearance, strength, temperature resistance, flexibility, cost, and application environment.

Common materials may include:

– ABS
– PC
– POM
– Nylon
– PP
– PE
– PMMA
– TPU / TPE

Quality Control

For mold making projects, we focus on tooling accuracy, sample verification, mold trial results, and modification confirmation. The process may include drawing review, DFM evaluation, mold structure checking, trial sample inspection, dimension checking, and final mold confirmation.

From Tooling to Production

After mold confirmation, the project can move into injection molding production. This helps customers manage the full process from part development and mold making to sample approval and mass production.
Chinese workers reviewing plastic molded samples during mold trial Chinese technician inspecting a plastic injection mold beside an injection molding machine Chinese technicians assembling and checking a plastic injection mold in a workshop Chinese mold engineer reviewing plastic injection mold CAD design

Surface Treatments

Gate Location Optimization

Gate location can be evaluated according to part structure, appearance requirements, flow balance, and production stability.

Parting Line Optimization

Parting line optimization helps reduce visible mold lines and improve the appearance and assembly quality of molded parts.

Mold Texture

Mold texture can be applied to create matte, grain, or special surface effects on plastic parts.

Mold Polishing

Mold polishing is used to improve the surface quality of molded plastic parts and meet appearance or functional requirements.

EDM Surface Finish

EDM surface finish may be used for mold areas that require specific cavity shapes, details, or controlled surface effects.

Quality Control

Drawing Review

The part drawing or 3D file is reviewed before tooling to check structure, dimensions, material requirements, and mold feasibility.

DFM Evaluation

DFM evaluation is used to identify potential mold making or injection molding issues before tooling starts.

Mold Structure Check

The mold structure is checked according to part geometry, gate design, cooling layout, ejection method, and production requirements.

Mold Trial Inspection

Trial samples are checked after mold testing to evaluate dimensions, appearance, part structure, and molding performance.

Sample Dimension Check

Key dimensions of trial samples are checked according to drawings or agreed project requirements.

Modification Confirmation

Mold modifications are confirmed based on sample feedback, dimensional results, appearance issues, or production requirements.

Final Mold Confirmation

The mold is confirmed after trial, modification, and sample approval before moving to production or shipment.

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