Custom injection molding

Plastic Injection Mold Development Process
  • 01
    Project Requirement Confirmation
    • Communicate with the client regarding product design requirements (dimensions, appearance, functions, materials, and estimated production volume).
    • Confirm product usage environment (heat resistance, chemical resistance, structural strength, etc.).
    • Define project timeline and budget for mold development.
  • 02
    Product Design & Feasibility Analysis
    • Obtain 3D files from the client or create CAD models internally.
    • Conduct DFM (Design for Manufacturability) review: check draft angles, wall thickness, parting lines, shrinkage, and ejection method.
    • Perform flow simulation (Moldflow/CAE) if necessary to predict filling, warpage, and cooling issues.
  • 03
    Mold Design
    • Decide mold structure (single/multi-cavity, hot runner or cold runner).
    • Design gates, runners, cooling system, and ejection mechanism.
    • Prepare 2D assembly drawings and 3D models for internal or client approval.
  • 04
    Mold Manufacturin
    • Material procurement: mold steel, mold base, etc.
    • Machining processes: milling, turning, EDM, wire cutting, grinding, etc.
    • Heat treatment: enhance hardness and wear resistance.
    • Polishing & texturing: achieve required surface finish.
  • 05
    Mold Assembly & Adjustmen
    • Assemble mold components.
    • Check fitting accuracy, clearance, and tolerance.
    • Ensure cooling channels and ejection system function properly.
  • 06
    Trial Molding (T0/T1/T2)
    • T0: initial trial to check flow, appearance, and shrinkage.
    • T1/T2: iterative mold modifications and improvements.
    • Verify product dimensions, appearance, and functionality.
  • 07
    Mold Validation & Pre-Production
    • Conduct pilot production runs to test durability and stability.
    • Confirm cycle time, yield rate, and dimensional stability.
  • 08
    Mold Delivery & Mass Production
    • Deliver mold to customer or transfer into production line.
    • Establish mold maintenance plan (cleaning, lubrication, regular inspection).
Target Customers
Global sourcing Household Goods Importers
Global sourcing Sporting & Outdoor Goods Traders
Global sourcing Aquarium & Pet Supplies Importers
Global sourcing Private Label Buyers of Major Retailers
Q&A
Q1 : What information is required to provide a product quotation?
A1:Please provide 3D drawings (STEP/IGS), 2D dimensional drawings, material requirements, estimated production volume, surface finish requirements, and expected delivery schedule.
Q2 : How long is the development lead time from design to trial molding?
A2:The typical development cycle is about 30–45 working days, depending on product complexity and the number of design revisions.
Q3 : How many shots can this mold produce? Is there any guarantee on mold lifetime?
A3:Mold life depends on the steel material and maintenance. Typically, it ranges from 300,000 to 1,000,000 shots, with a lifetime guarantee available.
Q4 : Can the mold be modified if the product design changes? Who will handle future maintenance?
A4:In most cases, the mold can be modified to meet new design requirements, and we can provide ongoing maintenance and technical support.
Q5 : After the mold is completed, can you support mass production? Do you provide after-sales technical support?
A5:Yes, we can provide trial runs, small-lot, and mass production services, along with continuous technical support and mold maintenance recommendations.
Plastic Injection Mold Machining Process
  • 01
     
    Material Preparation
    • Select suitable mold steel (e.g., P20, H13, NAK80, etc.).
    • Steel cutting and rough sizing.
  • 02
     
    Rough Machining
    • CNC Milling / Machining Center: rough milling of cavities and mold base.
    • Lathe: machining round parts (e.g., ejector pins, sleeves).
    • Drilling Machine: cooling channels, screw holes, guide pin holes.
  • 03
     
    Finish Machining
    • CNC Finish Milling: detailed cavity and core machining.
    • Grinding Machine: finishing flat surfaces, guide surfaces, and parting lines.
    • High-speed / 5-axis Machining (if required): machining complex surfaces.
  • 04
     
    Special Machining
    • EDM (Electrical Discharge Machining): deep grooves, sharp corners, complex shapes.
    • Wire Cut EDM: high-precision inserts, fine structures.
  • 05
     
    Heat Treatment
    • Improve hardness and wear resistance of mold steel (quenching, tempering, nitriding).
  • 06
     
    Surface Treatment
    • Polishing: ensure smooth finish or transparency for optical parts.
    • Sand Blasting: matte or anti-glare effect.
    • Etching / Texturing (Grain Processing): leather grain, decorative surface finish.
  • 07
     
    Inspection & Adjustment
    • Dimensional inspection and fine-tuning to ensure conformity with drawings.
  • 08
     
    Assembly & Pre-Trial Adjustment
    • Assemble mold core, cavities, and mold base.
    • Conduct pre-trial checks before trial molding.
No matter your project requirements, we provide high-quality plastic injection mold development services to ensure optimal product performance and production efficiency.
Contact us to discuss your custom mold solution!
Contact Us

contact
mdindco@mdpind.com