Plastic Injection Molding
Turning Design into Mass Production
Whether it is a design, development, or manufacturing problem, we can engineer a solution that solves it.
Premium Plastic Injection Molding of Exquisite Quality
Plastic Injection Molding Materials
The general materials listed below are for custom plastic injection molding.
If standard materials don’t meet the requirements for your custom injection molding parts, additives and fibers can enhance the material properties.
Different Types of Molds to Meet Customer Needs
| Core Advantage | CNC machining and compression&injection molding |
| Product Material | ABS, PC, PA6, PA66, PC+ABS, POM, PA6+10GF, Nylon, PE, PVC, PE, PVC, TPE, TPU, TPV, PET, PEI, LCP, PS, POM, ASA, HDPE, PEEK, PPS, |
| Product Finishing | Silkscreen, Hand oil coating, Laser etching, Spraying, Glossy coating, Matte Coating, UV Painting, Pad printing, Chrome Plating, Nickle Plating, Non-conductive, Vacuum Metallization, EMV coating, etc. |
| Mold Standard | DME, HASCO,China domestic |
| Runner System | Hot runner and cold runner, YUDO hot runner |
| Mold Lifecycle | 50k-1000k shots |
| Mould Finishing | Normal Polishing (SPI B1-B3), High Polishing (SPI A1-A3), VDI Texturing, YS1281 Texturing, EDM, Sandblasting Grinding |
| Inquiry Information | 2D:dwg,dxf,edrw 3D:step,lgs,X-T,Prt,Sldprt Physical Samples or the size of the multi-angle pictures |
| Advanced Tool Equipment | ◆ 8 Advanced CNC machines: Charmilles, Seiki, MITSUBISHI ◆ 4 Advanced EDM: CHARMILLES, SODICK ◆ 2 Advanced WEDM: CHARMILLES, SODICK |
| Inspection Standard | FAI (First Article Inspection), Dimension Report, Outgoing products inspection report |
Custom Plastic Injection Molding Capabilities at a Glance
Rilong Precision Mold provides custom thermoplastic injection molding from design review and mold manufacturing through molding, finishing, inspection, and fulfillment. The service supports prototype-to-production programs, engineering and commodity resins, hot- and cold-runner molds, and documented first-article and outgoing inspection.
| Service scope | Design review, mold making, injection molding, secondary finishing, inspection, and fulfillment |
|---|---|
| Common materials | ABS, PC, PA6, PA66, PC/ABS, POM, PE, PP, PVC, TPE, TPU, PET, PEI, LCP, PS, ASA, HDPE, PEEK, and PPS |
| Mold options | Hot- or cold-runner systems; DME, HASCO, and China domestic mold standards; project-specific mold life from 50,000 to 1,000,000 shots |
| Finishing options | SPI polishing, VDI texturing, EDM texture, sandblasting, painting, pad printing, laser marking, plating, and vacuum metallization |
| Quality records | First Article Inspection (FAI), dimensional reports, and outgoing-product inspection reports |
| Accepted project inputs | STEP, X_T, PRT, SLDPRT, DWG, DXF, EDRW, physical samples, or dimensioned multi-angle images |
How a Custom Injection Molding Project Works
- Requirement review: confirm part function, material, finish, quantity, tolerances, and quality documentation.
- Design and manufacturability review: evaluate draft, wall thickness, gates, parting lines, ejection, shrinkage, and likely molding risks before tooling.
- Mold design and manufacture: select the mold standard, cavity strategy, steel, runner system, texture, and expected tool life for the program.
- Sampling and validation: mold trial parts, inspect critical dimensions, document findings, and refine the process where required.
- Production and delivery: run the approved process, complete secondary operations and outgoing inspection, then package for shipment.
What to Send for an Accurate Injection Molding Quote
For a useful technical and commercial review, send the 3D model and 2D drawing where available, resin or performance requirements, annual and order quantities, cosmetic standard, critical tolerances, target tool life, required inspection documents, and delivery destination. If the material is undecided, describe the operating temperature, load, chemical exposure, appearance, regulatory, and cost requirements.
Related resources: mold design and tooling, injection molding material selection, and overmolding and insert molding.
Plastic Injection Molding FAQ
What files are needed for an injection molding quote?
A 3D CAD file such as STEP or X_T is the best starting point. Add a 2D drawing for critical dimensions, tolerances, threads, finishes, and inspection requirements. Physical samples or dimensioned photographs can be reviewed when CAD is not yet available.
Which plastics can Rilong injection mold?
Available materials include common resins such as ABS, PP, PE, PC, nylon, POM, PVC, TPE, and TPU, plus engineering polymers including PEEK, PPS, PEI, and LCP. Final resin selection should be based on part performance, processing, compliance, appearance, and cost.
Can one supplier handle the mold and molded parts?
Yes. Rilong’s scope covers mold design and manufacture, trial and validation, injection-molded part production, secondary finishing, inspection, packaging, and fulfillment. Keeping tooling and molding under one program reduces handoffs when resolving manufacturability or process issues.
How is part quality verified before production?
Verification can include mold trials, First Article Inspection, dimensional reports for defined characteristics, customer sample approval, and outgoing inspection. The drawing and purchase requirements should identify critical dimensions and the records required for release.
How long does a custom injection molding project take?
Timing depends on part complexity, mold construction, material availability, finishing, validation, and required design changes. Rilong confirms a project schedule after reviewing the files and requirements rather than applying one lead time to every mold.
From Part Design to Injection-Molded Production
DESIGN
Engineering review covers part geometry, draft, wall thickness, material selection, gates, parting lines, ejection, tolerances, appearance, and likely molding risks before tooling.
MANUFACTURING
Tooling trials and injection molding are planned around the approved material, part requirements, production quantity, finishing, and required inspection records.
FULFILLMENT
Approved parts proceed through specified secondary finishing, outgoing inspection, protective packaging, and shipment to the delivery destination.
Customer-Focused Partnership
At Rilong, we design and develop new product molds based primarily on our customers’ ideas. We take pride in listening to customer feedback and implementing their innovations, ensuring that their vision is brought to life.
Leaders in Innovation
Rilong Precision Mold supports this rapid pace by developing and building advanced tools that ensure we remain at the forefront of the industry, consistently leading with innovation and excellence.
