Answers to the most common questions about injection molding services, mold design, pricing, and working with RCH Plastic as your manufacturing partner in China.
General Questions
What is injection molding?
Injection molding is a manufacturing process where molten plastic is injected into a closed mold under high pressure. The material cools and solidifies into the shape of the mold cavity, producing parts with high precision and repeatability. It is the most cost-effective method for producing plastic parts in medium to high volumes.
What types of plastics can be used?
Almost all thermoplastic materials can be injection molded, including ABS, PC, PA/Nylon, POM (Delrin), PP, PE, PEEK, TPU, and many others. Filled compounds such as glass-reinforced nylon are also common. Our engineers help you select the optimal resin for your application’s mechanical, thermal, and chemical requirements.
What industries does RCH Plastic serve?
We serve automotive, medical devices, consumer electronics, home appliances, industrial equipment, and telecommunications sectors across Europe and North America. Our documented quality management processes meet the strict quality requirements of these industries.
Mold Design & Manufacturing
How long does it take to manufacture a mold?
A standard injection mold typically takes 20-35 working days to manufacture, depending on complexity. Simple two-plate molds can be ready in 15 days, while complex molds with slides, lifters, or hot runner systems may take 40-50 days. We provide a detailed production schedule with every quotation.
What is DFM analysis?
Design for Manufacturing (DFM) analysis reviews your part design before mold production begins. It checks draft angles, wall thickness, gate location, ejection method, and identifies potential molding defects. This proactive review prevents costly mold modifications later and ensures first-shot success.
Do you offer mold flow analysis?
Yes. We run full mold flow analysis using industry-leading simulation software for every custom mold project. This predicts fill patterns, weld lines, air traps, warpage, and cooling performance before any steel is cut, reducing trial-and-error iterations by 50-70%.
Pricing & Quotation
How much does a mold cost?
Mold cost depends on part size, complexity, cavity count, steel grade, and features like hot runners or slides. Simple molds start around $3,000, while complex multi-cavity production molds range from $10,000 to $50,000+. We provide an itemized quotation after reviewing your part design.
How do I get a quotation?
Send your 3D CAD file (STEP or IGES) and 2D drawing to our sales team through the contact page. Include material, annual volume, and quality requirements. Our engineers review your design and deliver a detailed quotation with DFM feedback within 24 hours.
Quality & Shipping
What QC processes do you follow?
We follow a documented quality management system with a full inspection workflow: incoming material inspection, in-process machining checks, CMM dimensional measurement, trial shot inspection, and final pre-shipment inspection with a detailed report. Third-party inspection is available on request.
How do you ship molds to Europe and North America?
We ship worldwide via DHL, FedEx, UPS, and sea freight. Mold deliveries to Europe typically take 3-5 days by air or 3-4 weeks by sea. Each mold is securely packed in a wooden crate with moisture protection for international transport.