Language
English Español

Two-Color Injection Molds Custom

Home / Products / Two-Color Injection Molds
Shanghai Pingzhou Plastic Products

PRODUCT

contact us

  • +86-18939901200

  • shpzsj@163.com

  • No. 88, Yechang Road, Yexie Town, Songjiang District, Shanghai, China

Two-Color Plastic Injection Molds Manufacturers

We specialize in custom two-color injection molds for applications such as home appliance panels, automotive tail lights, vehicle handles, power tool grips, and dual-material (soft/hard) buttons. Our manufacturing process utilizes precision sealing interfaces and needle-valve hot runner systems, incorporating premium creep-resistant steels to effectively prevent flash and optimize the bonding strength of the overmolded layer. Our comprehensive service covers everything from DFM reviews, rotary positioning calibration, and bond strength verification to maintenance and refurbishment for mass production. Key advantages include controllable flash, secure overmolding without delamination, single-step molding that eliminates secondary processes, stable production, and lower overall manufacturing costs.

Shanghai Pingzhou Plastic Products Co., Ltd.

Our company is an integrated solution provider specializing in injection mold design and manufacturing as well as plastic injection molding. We are committed to offering end‑to‑end services—from product development, mold design, and tooling fabrication to production injection molding—for customers in the medical, consumer goods, automotive, home appliance, and electronics sectors.

As China Double Color Injection Molding Manufacturers and Double Shot Plastic Injection Molding Suppliers, we maintain a comprehensive in‑house machining chain, equipped with high‑precision CNC machining centers, EDM (Electrical Discharge Machining), wire EDM (WEDM), precision grinders, CNC lathes, milling machines, deep‑hole drilling machines, and other mold‑making equipment. Our injection molding workshop houses more than 20 injection molding machines with various clamping‑force tonnages, covering a wide molding range from small precision components to medium‑ and large‑sized structural parts. These are complemented by auxiliary peripheral equipment such as mold temperature controllers, centralized material feeding systems, and automated robotic pick‑and‑place units. This robust infrastructure gives us the proven capability to design, develop, and manufacture medium‑ to high‑precision injection molds, as well as to undertake high‑volume production orders.

Backed by an experienced team of mold structure and process design engineers, we leverage the vertical integration advantage of integrated tooling and molding to significantly shorten the lead time from product development to mass production, while effectively reducing overall costs for our customers.

Upholding the philosophy of “Customer First, Continuous Improvement” Shanghai Pingzhou Plastic Products Co., Ltd. looks forward to providing partners across various industries with cost‑effective, rapidly responsive solutions for plastic products and injection molds.

News
Two-Color Injection Molds Industry knowledge

Two-Color Injection Molds Manufacturer

Shanghai Pingzhou Plastic Products Co., Ltd. is a specialized Two-Color Injection Molds manufacturer and supplier based in Shanghai, China. We design and build custom two-shot molds for applications ranging from automotive tail lights and power tool grips to medical device handles and consumer goods. Our integrated factory combines mold design, precision machining, and injection molding under one roof, enabling us to control quality, shorten lead times, and reduce overall project costs.

With over 20 years of experience and a team of 60+ technicians, we deliver medium to high-precision molds that support high-volume production. Our two-color molds are engineered for stable, repeatable output, with features like precision sealing interfaces and needle-valve hot runner systems to prevent flash and ensure strong material bonding.

Explore our range of Two-Color Injection Molds or view our other Products for more solutions.

Our Two-Color Mold Range

We offer custom two-color molds for a variety of product categories. Each mold is tailored to the specific material combination, part geometry, and production requirements.

Product Type Typical Materials Applications
Handle Housings ABS, PC/ABS, PA+GF, TPE/TPU Power tool grips, appliance handles, medical device grips
Toothbrushes PP, PMMA, TPE, TPU Manual toothbrushes, electric toothbrush heads, interdental brushes
Cups PP, PC, TPE, silicone Thermal flasks, sports bottles, children's training cups, travel mugs

Application Fit

Two-color injection molding is ideal for parts that require a rigid structural core combined with a soft-touch overmold. Common applications include:

  • Automotive: tail lights, interior handles, dashboard components
  • Electronics: dual-material buttons, seals, and housings
  • Medical: ergonomic grips for instruments and devices
  • Consumer goods: toothbrushes, cups, and kitchen tools

We work with a wide range of thermoplastics and elastomers, including food-grade and medical-grade materials, to meet your specific performance and regulatory requirements.

Engineering and Design Support

Our engineering team provides DFM (Design for Manufacturing) analysis at the outset of every project. We review your part design for potential issues such as shrinkage, warpage, and demolding challenges, and optimize the mold structure, gating system, and cooling channels accordingly. This proactive approach reduces trial runs and ensures the mold performs reliably in production.

We also offer rotary positioning calibration and bond strength verification to ensure the two materials adhere securely without delamination. Our goal is to deliver a mold that produces consistent, high-quality parts from the first production run.

Quality Assurance and Testing

We implement a three-level inspection system: first article inspection, in-process inspection, and final inspection. Our quality lab is equipped with 2D and 3D coordinate measuring machines to verify dimensional accuracy. We also conduct mold trials to fine-tune parameters and ensure the parts meet your specifications. All products comply with RoHS and REACH environmental standards.

Our in-house machining capabilities include CNC machining centers, EDM, wire EDM, precision grinders, and deep-hole drilling, allowing us to maintain tight tolerances and high surface quality.

Information We Use to Configure Your Solution

To prepare an accurate quotation and mold design, we need the following information from you:

  • Part drawings (2D/3D) or samples
  • Material specifications (resin types, hardness, color)
  • Expected annual production volume and cycle time targets
  • Surface finish requirements (texture, gloss)
  • Any regulatory or compliance standards (e.g., food-grade, medical)
  • Preferred injection molding machine specifications (if any)

With this data, we can provide a detailed DFM report, mold design proposal, and cost estimate tailored to your project.

Maintenance and Support

We provide maintenance and refurbishment services for two-color molds to extend their service life and maintain production quality. Our team offers technical support throughout the mold's lifecycle, including troubleshooting and spare parts supply. We also provide documentation and training for your operators to ensure smooth handover.

FAQs

What is the typical lead time for a two-color injection mold?

Lead time depends on mold complexity and your requirements. For standard molds, we typically deliver in 4-6 weeks after design approval. Complex molds with advanced features may take longer. We provide a detailed schedule with our quotation.

Can you produce molds for food-contact or medical applications?

Yes, we have experience with food-grade and medical-grade materials. We ensure that the mold design and production process meet the necessary safety and cleanliness standards, and we can provide documentation for compliance.

Do you offer injection molding services in addition to mold making?

Yes, we are an integrated manufacturer. We can handle both mold fabrication and production injection molding, which simplifies your supply chain and ensures consistent quality. We have over 20 injection molding machines with various clamping forces.

How do you ensure the two materials bond securely without delamination?

We use precision sealing interfaces and needle-valve hot runner systems to control the molding process. We also perform bond strength verification during mold trials to ensure the overmolded layer adheres properly. Material selection and surface treatment are optimized for compatibility.

What is your quality control process?

We follow a three-level inspection system: first article, in-process, and final inspection. We use 2D and 3D CMMs to verify dimensions and conduct functional tests as required. All molds are trial-run before delivery to ensure they meet your specifications.