Polycarbonate (PC) Injection Molding Manufacturer
GBM Mold provides custom PC injection molding and mold tooling for impact-resistant housings, transparent covers, PC/ABS enclosures, high-precision plastic parts and export-ready mold projects.
- Custom PC injection mold tooling for prototypes, low-volume and production projects
- DFM support for PC flow, gate design, wall thickness, internal stress and warpage control
- PC, PC/ABS, transparent PC, optical-grade PC and PC + TPU molding support
- T1 samples, mold trial videos, CMM reports and sample QC reports available
- Export-ready mold delivery with drawings, spare parts list, packing photos and maintenance notes
Quick Facts
PC Injection Molding at a Glance
What It Is
Polycarbonate injection molding uses PC resin and precision molds to produce strong, durable, and dimensionally stable plastic parts.
Why Buyers Use PC
PC is selected for impact resistance, heat resistance, transparency, electrical insulation, and dimensional stability.
What GBM Provides
GBM provides PC mold tooling, injection molding, DFM review, T1 samples, CMM inspection, and export mold support.
What Is Polycarbonate (PC) Injection Molding?
Polycarbonate injection molding is a manufacturing process that melts PC resin and injects it into a precision mold to produce strong, transparent, impact-resistant, and dimensionally stable plastic parts. PC is often used for housings, covers, transparent components, electronic enclosures, automotive parts, and industrial components.
Compared with common plastics, PC requires more careful control of resin drying, mold temperature, gate design, wall thickness, cooling, and internal stress. Poor mold design or processing may lead to flow marks, bubbles, sink marks, warpage, or cracking.
GBM supports PC injection molding projects with DFM review, PC mold tooling, T1 mold trial, CMM inspection, sample QC reports, and export-ready mold delivery.
Send your 2D/3D drawings, material grade, quantity, and tolerance requirements for evaluation.
Why Polycarbonate Is Used for Injection Molded Parts
Comprehensive tooling and molding solutions tailored to your specific polycarbonate material needs.
High Impact Resistance
PC is suitable for protective housings, covers, and structural plastic components that require toughness.
Transparency
PC can be used for transparent covers, windows, guards, and light guide components.
Heat Resistance
PC is suitable for applications requiring better heat resistance than many commodity plastics.
Dimensional Stability
PC can maintain stable dimensions when mold temperature, cooling, and shrinkage are properly controlled.
Electrical Insulation
PC and PC/ABS are commonly used for electrical housings, connector parts, and electronic enclosures.
Surface Finish
PC can achieve good cosmetic surfaces, but gate design, polishing, drying, and process control are important.
Typical Applications of PC Injection Molded Parts
Electronics & Electrical
Housings, covers, connector housings, enclosures.
Automotive
Interior parts, covers, brackets, functional components.
Medical Devices
Housings, covers, holders, transparent non-implant parts.
Industrial Equip
Protective covers, machine guards, control panels.
Transparent Parts
Clear covers, light guides, display covers, windows.
Start Your Project Evaluation
Send your 2D/3D drawings, material grade, quantity, and tolerance requirements for evaluation.
PC Molding Challenges & GBM Solutions
Polycarbonate is notoriously difficult to mold due to its high viscosity and tendency for internal stress. Here is how we solve common defects.
| Pain Point | Business Impact | GBM Solution |
|---|---|---|
| High Viscosity | May cause short shots, flow marks, or high injection pressure | Optimize gate, runner, wall thickness, and filling path |
| Internal Stress | May cause cracking during assembly or use | Control gate design, mold temperature, cooling, and packing |
| Warpage | May affect assembly and dimensional stability | Optimize cooling, wall thickness, and part structure |
| Flow Marks / Bubbles | May cause cosmetic rejection, especially for transparent PC | Improve drying, venting, mold temperature, and trial process |
| Sink Marks / Voids | May affect strength and appearance | Review rib, boss, wall thickness, packing, and cooling design |
Why Choose GBM for PC Injection Molding
DFM Before Mold Cutting
We review wall thickness, draft angle, gate location, ribs, bosses, undercuts, and possible stress areas before mold manufacturing.
PC Mold Tooling Experience
GBM supports PC molds for housings, covers, transparent parts, PC/ABS enclosures, and precision components.
T1 Samples & Mold Trial Support
We provide T1 samples, mold trial pictures, trial videos, and engineering feedback before mold approval.
CMM-Based Quality Control
CMM reports, sample QC reports, FAI, and CPK reports are available based on project requirements.
Export-Ready Mold Delivery
We can provide mold drawings, spare parts lists, maintenance notes, packing photos, and secure export packaging.
PC vs ABS vs PC/ABS vs PMMA
| Material | Main Strength | Best For |
|---|---|---|
| PC | Impact resistance, heat resistance, transparency | Durable parts, transparent covers, protective housings |
| ABS | Easy molding, lower cost, good appearance | General housings and consumer parts |
| PC/ABS | Balance of toughness and processability | Electronics enclosures, automotive interior parts |
| PMMA | Excellent optical clarity | Transparent covers, lenses, display parts |
If you are not sure whether PC, PC/ABS, ABS, or PMMA is better for your part, GBM can review your drawings, application, and quality requirements before quotation.
How to Choose the Right PC Molding Solution
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Part Function Impact, transparency, heat resistance, insulation, appearance
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Material Grade PC, PC/ABS, transparent PC, optical-grade PC, flame-retardant grade
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Wall Thickness Avoid thick sections, sink marks, bubbles, and stress
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Surface Finish Transparent, polished, textured, or hidden surface
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Annual Quantity & Tolerance Affects mold steel, cavities, cost. Mark critical dimensions for CMM.
Upload your drawings and GBM will recommend a suitable PC molding solution.
Upload Drawings Now
Quality Control for PC Injection Molded Parts
Rigorous Inspection Process
- Incoming material and steel checking
- Mold component inspection during machining
- Mold assembly and water testing
- T1 sample inspection
- CMM dimension inspection
- Final fit / form / function review
Reports Available
T1 Mold Trial for PC Projects
For PC injection molding, T1 trial helps verify flow marks, bubbles, sink marks, warpage, gate marks, stress risk, dimensions, and assembly performance before mold approval.
GBM Checks
- • Filling status & Flow marks
- • Bubbles, voids, and Sink marks
- • Warpage & Gate marks
- • Dimensions & Appearance
- • Assembly fit
Buyer Receives
- • Physical T1 samples
- • Trial pictures & video
- • Sample QC report
- • CMM report (if required)
- • Engineering feedback
Export-Ready PC Injection Mold Packaging
Need an export-ready PC mold?
Send us your machine data and mold standard requirements for a precise evaluation.
Contact Engineering TeamFAQ About Polycarbonate Injection Molding
What is polycarbonate injection molding?
When should I choose PC instead of ABS?
What is the difference between PC and PC/ABS injection molding?
What are common defects in PC injection molding?
How does GBM reduce warpage in PC molded parts?
Get a Polycarbonate (PC) Injection Molding Quote with DFM Review
Send your 2D/3D drawings, resin grade, annual quantity, surface finish, and tolerance requirements. GBM engineers will review your PC part design and recommend a suitable molding solution.
Email Us
Annie@gbminjection.com
WhatsApp / Call
+86 15268369865
Factory Address
Room 101, Jiumo Technology Park, Gangsheng Road, Yabian Village, Shajing Street, Baoan District, Shenzhen City