Custom Injection Molding & Integrated Manufacturing
Custom Plastic Injection Molding Services
HingTung provides custom plastic injection molding in China through one coordinated manufacturing workflow covering DFM, Moldflow analysis, mold manufacturing, injection molding, secondary operations, assembly, inspection, and repeat production for OEM projects.
What Is Plastic Injection Molding?
Plastic injection molding produces repeatable thermoplastic parts by injecting molten resin into a precision mold. It is widely used for custom injection molded parts that require consistent geometry, surface quality, and scalable production.
HingTung supports projects from material and molding process selection through DFM, mold manufacturing, injection molding, process control, inspection, secondary operations, and repeat production.
Injection Molding Capacity
Plastic Injection Molding Capabilities
HingTung supports custom plastic injection molding projects across a range of part sizes, mold structures, and production requirements. Machine selection is reviewed against mold size, projected area, shot weight, resin, geometry, and process needs.
Production Specifications
| Specification | US | Metric |
|---|---|---|
| Injection Molding Range | 60–650T press range | 60–650T press range |
| Maximum Mold Size | 36.6 × 36.6 × 36.2 in. | 930 × 930 × 920 mm |
| Maximum Mold Weight | Approx. 22,046 lb | 10 metric tons |
| Shot Capacity | Up to 4.41 lb | Up to 2,000 g |
| Typical Part Size | Up to 25.6 in. | Up to 650 mm |
| Maximum Projected Area | Approx. 279 sq. in. | 1,800 cm² |
| Maximum Part Depth | 15.7 in. | 400 mm |
| Tooling / Fixture Precision* | Down to 0.00008 in. | Down to 0.002 mm |
*Precision: 0.002 mm applies to selected tooling, electrode, and precision fixture features. It should not be interpreted as a standard tolerance for all finished injection molded parts.
Maximum part depth depends on mold structure, mold-opening stroke, ejection requirements, and the position of the parting line.
Injection Mold Tooling Details
Final tooling specifications are defined around the production program.
Material Selection & Processing
HingTung works with commodity plastics, engineering resins, elastomers, high-performance polymers, and recycled material options. Material selection is reviewed around the finished part, molding behavior, operating environment, appearance, dimensional requirements, and expected production volume.
Material Capability
Plastic Injection Molding Materials
Common & Project-Specific Material Options
Browse All Material GuidesCommodity & General Plastics
Engineering Plastics
Elastomers & Special Grades
- TPE Thermoplastic Elastomer
- TPU Thermoplastic Polyurethane
- FR Grades Flame-Retardant Materials
-
Color Grades Project-Specific Colors
-
Filled Grades Reinforced / Modified Resins
-
Other Project-Specific Grades
High-Performance Polymers
- PPS Polyphenylene Sulfide
- PEEK Polyether Ether Ketone
- LCP Liquid Crystal Polymer
- PPA Polyphthalamide
- PPSU Polyphenylsulfone
-
Other Project-Specific High-Performance Resins
Post-consumer recycled resin can be evaluated for projects with recycled-content targets. PCR percentage, resin source, color consistency, mechanical performance, molding behavior, and validation requirements are reviewed for the actual part.
Explore PCR MaterialsMolding Process Options
Custom Injection Molding Processes
Choose the molding approach around the part structure, material combination, functional requirements, and expected production volume.
Standard Production
Conventional Plastic Injection Molding
Standard thermoplastic molding for repeatable custom parts from mold trials through stable production.
Integrated Inserts
Insert Injection Molding
Metal inserts, terminals, pins, or bushings are positioned in the mold and integrated directly into the molded plastic part.
Multi-Material Parts
Overmolding Injection Molding
A second material is molded over a substrate to add grip, sealing, protection, or another functional surface.
Two-Material Production
2-Shot / 2K Injection Molding
Two materials or colors are molded through a coordinated process to form one integrated component.
Work With HingTung
Looking for a Manufacturing Partner?
Send us your drawings and requirements. We’ll review the project and discuss the next step.
Start a ProjectBefore Steel Cutting
Tooling problems are cheaper to correct before steel is cut. HingTung reviews part geometry, material behavior, mold structure, filling conditions, and tooling requirements before injection mold manufacturing begins.
Engineering & Tooling
DFM, Moldflow and Injection Mold Tooling
Resolve Part and Mold Risks Earlier
DFM injection molding review and Moldflow analysis help identify issues that can affect filling, ejection, dimensional stability, appearance, or tooling performance before custom injection molds move into manufacturing.
Draft, wall thickness, ribs, bosses, undercuts, shut-offs, parting strategy, and areas that may complicate molding or ejection.
Gate location, filling behavior, weld lines, shrinkage, pressure requirements, and how the selected resin may behave inside the cavity.
Cavity layout, inserts, sliders, cooling, venting, ejection, and mold structure are reviewed around the planned production process.
Copper electrodes and precision fixtures can be designed and manufactured in-house to support plastic injection mold tooling, EDM work, fitting, and mold validation.
fixture features
Production & Quality
Injection Molding Production Capacity
HingTung combines injection molding, CNC machining, supporting production equipment, and in-house inspection resources for repeat OEM manufacturing.
Machines
Plastic Injection Molding
Multiple press sizes support different mold dimensions, shot requirements, cavity layouts, and repeat production programs.
CNC Machining
CNC machining supports mold components, tooling, fixtures, and precision production work.
Specialized Equipment
Supporting production and testing equipment extends capability beyond the molding machine itself.
Equipment selection and inspection requirements are defined according to the mold, material, drawing, production volume, and quality requirements of each project.
After Injection Molding
HingTung can coordinate finishing, marking, joining, assembly, inspection, and packaging after molding to reduce separate production steps for OEM projects.
Value-Added Manufacturing
Secondary Operations & Assembly
Part Finishing
- Mold Texturing
- Silk Screening
- Pad Printing
- Laser Etching
Component Integration
- Ultrasonic Welding
- Component Assembly
- Hardware Integration
- Inspection & Packaging
More Process Options
- IMD / IML
- Conductive Coating
- Vacuum Plating
- Other Finishing Processes
Secondary operations can be coordinated with molding, inspection, and assembly according to the finished-part requirements.
Molded Parts → Finished Components
Our Factory
Our Certificates
Injection Molding FAQs
Common Questions Before Starting a Project
What information is needed for an injection molding quote?
Provide 2D or 3D drawings, material, quantity, finish, and any critical dimensions. HingTung can review DFM, tooling, molding, and secondary-operation requirements together before quotation.
How much does a plastic injection mold cost?
Mold cost depends on part complexity, cavity count, steel, mold structure, finish, and expected production life. HingTung provides project-specific quotations after reviewing the drawing and production requirements.
How does plastic injection molding work?
Molten plastic is injected into a mold cavity, cooled, solidified, and then ejected as a finished molded part. The cycle repeats for production.
What are the disadvantages of plastic injection molding?
The main limitations are upfront tooling cost and the need to resolve design issues before production. DFM and Moldflow analysis can help identify many risks before mold manufacturing begins.
Can HingTung handle mold making and injection molding together?
Yes. HingTung can coordinate DFM, mold manufacturing, injection molding, secondary operations, assembly, and inspection within one project.
What materials can be used for plastic injection molding?
Common materials include PP, ABS, PC, PA, POM, PBT, TPE, TPU, PPS, and PEEK. HingTung can also evaluate PCR and other project-specific resin options.
What tolerances can plastic injection molding achieve?
Injection molding tolerances depend on geometry, resin, mold design, and process stability. HingTung reviews critical dimensions individually for tight tolerance injection molding projects.
Contact Our Engineering Team
Our team is ready to support your project with technical expertise, fast response, and reliable manufacturing solutions. Send us your drawings or requirements, and we will provide professional feedback and a quotation as soon as possible.
No. 6, Liuxian 2nd Road,Baoan District Shenzhen, Guangdong, China
+44.7716.593181 +44.7716.593181
Mon-Sat : 9am-6pm Sunday : Closed
Sale@hingtung.hk Leslie@hingtung.hk