Products Categories

2K Two-Shot Injection Molding for Automotive & Power Tools | China Suppliers & Factory Solutions

Two-shot injection molding, also known as 2K molding, is an innovative manufacturing process that integrates two different materials in a single molding operation. This technique provides components with superior structural strength while offering both functional and aesthetic surfaces. It is particularly prevalent in the automotive industry and power tool manufacturing, where parts require a combination of rigid backing and soft-touch or dual-color features.
As a leading China factory and supplier, Jinlong Electric specializes in producing high-quality 2K molds tailored for automotive components and power tool applications. Our extensive production experience highlights the effectiveness of two-shot molds for items such as dual-color electric tool housings and automotive functional parts that demand soft-touch surfaces paired with robust structural bases.
This case exemplifies Jinlong's expertise in designing and manufacturing advanced 2K two-shot injection molds, utilizing cutting-edge dual-shot injection equipment and a skilled engineering team dedicated to process development. Choose Jinlong Electric for reliable injection molding solutions that meet the highest industry standards.

Product Details

Engineering Specifications

Parameter	Specification
Product Application	Automotive components, power tool housings
Mold Type	2K / Two-Shot injection mold
Material Combination	ABS + TPE, PC + ABS, PP + TPU (custom per requirement)
Mold Size	Up to 3,200 × 1,800 × 1,600mm
Mold Steel	S136 (cavities), 718H (cores)
Cavity Layout	Single-cavity, multi-cavity
Gate System	Sequential valve gate system
Surface Finish	Class-A + soft-touch (per material combination)
Expected Mold Life	500,000+ shots per material layer
Tolerance	±0.01mm
Injection Equipment	Dedicated 2K dual-shot machine, 250T–360T

Technical Process

Step 1

Inquiry & Requirements Analysis

Customer submits product drawings, material specifications, and production targets. Jinlong evaluates 2K design feasibility and provides a quotation within 3 business days.

Step 2

2K Design Review & DFM

Jinlong reviews material pair compatibility, interface geometry, sequential injection sequence, and temperature management. DFM feedback provided within 48 hours.

Step 3

Mold Design — 2K Specific

Jinlong develops 2K mold with sequential valve gate system, isolated temperature control zones, and precision inserts for each material cavity. Designs submitted for approval.

Step 4

Precision Manufacturing

Mold machined in Jinlong's tool room with specialized attention to valve gate passages, interface surfaces, and finishes on both material cavities.

Step 5

2K Trial & Process Development

Trials on Jinlong's dedicated 2K dual-shot machine. Process engineers develop optimal parameters — valve gate timing, injection profiles, temperatures, cycle time. Full process documentation provided.

Step 6

Sample Approval & Delivery

Samples measured on CMM with complete FAI documentation. Upon approval, mold shipped with full documentation.

Step 7

Ongoing Support

Valve gate adjustments, spare parts, and engineering modifications available.

Customization Capabilities

Category	Options
Material Combinations	ABS+TPE, PC+ABS, PP+TPU, PA66+TPE, PC+PMMA
First Shot Materials	ABS, PC, PP, PA66, PC/ABS
Second Shot Materials	TPE, TPU, silicone, soft-touch elastomers
Cavity Layout	Single-cavity, multi-cavity, family molds
Overmold Design	Full overmold, partial overmold, sealing lip
Gate System	Sequential valve gate, hot runner individual nozzle control

Why Jinlong for 2K Two-Shot Molds?

Dedicated 2K dual-shot injection machines (250T–360T) for in-house trials

Sequential valve gate systems designed and manufactured in-house

Moldflow simulation for both first-shot and second-shot processes

Complete 2K process development and documentation

40+ years of precision mold manufacturing experience

Quality Assurance

ISO 9001:2016 and IATF 16949:2016 certified

Full CMM inspection for both material layers

Interface geometry and adhesion validation

Complete documentation package with every delivery

Back to Automotive Molds

Frequently Asked Questions (FAQ)

What material combinations are available for your 2K molds?

We support a wide variety of material pairings, including ABS+TPE, PC+ABS, PP+TPU, PA66+TPE, and PC+PMMA, tailored to meet your design and application requirements.

What is the maximum mold size Jinlong can manufacture?

Our precision tooling facilities can handle large-scale molds with dimensions up to 3,200 × 1,800 × 1,600mm.

What is the expected mold life of your 2K injection molds?

By utilizing high-grade steel such as S136 for cavities and 718H for cores, our 2K molds are built to deliver an expected mold life of 500,000+ shots per material layer.

What tolerances can Jinlong achieve in production?

Our advanced tooling technology allows us to maintain strict tolerances down to ±0.01mm, ensuring precision interface geometry and fit.

Do you perform in-house trials for 2K molds?

Yes, we have dedicated 2K dual-shot injection machines ranging from 250T to 360T specifically for in-house trials and process parameter optimization.

What quality certifications does Jinlong hold?

We are fully certified under ISO 9001:2016 and IATF 16949:2016 quality management systems to meet rigorous automotive and industrial standards.