Ningbo Konger Chameleon Series CMS Injection Molding Machine features true sandwich co-injection one-step molding. It focuses on maintaining quality in the outer layer, reducing costs in the inner layer, and improving efficiency throughout the process. Suitable for medium-to-large and precision products across multiple industries, it can lower overall costs by 15%–25%.

Its most breakthrough design is the parallel dual injection units with a single shared nozzle, enabling seamless compatibility with existing single-color molds. No mold modification or mold base replacement is required to directly produce sandwich, two-color, or mixed-color products. It provides one of the industry’s most mold-universal and lowest-cost upgrading solutions, fully balancing practicality, productivity, and product competitiveness.

I. Core Process & Equipment Features

1. Basic Process & Configuration

True Sandwich (Co-Injection) Molding

Dual barrels with precise sequential control: virgin material for the outer layer, recycled or low-cost material for the inner layer. One-shot molding forms a skin-core sandwich structure without secondary assembly, eliminating delamination risks.

Machine Specifications

Clamping force: 140–700T

Parallel injection units

Compatible with PP, PE, ABS, PC, PA, TPE and other mainstream plastics

Supports hard-soft composite and multi-color integrated molding.

Precision & Stability

Dual-cylinder injection with closed-loop pressure control

Toggle-type clamping for stable mold movement

High molding repeatability and long service life, greatly reducing maintenance costs.

2. Highlight: Parallel Dual Injection Units + Single Shared Nozzle

Structural Design: Main injection unit horizontal parallel + auxiliary unit inclined horizontally, sharing one nozzle and three-way runner system. Materials converge at the nozzle tip via an internal three-way valve / check valve for a more compact structure.

Sequential Control: Closed-loop electric control + servo drive accurately adjusts injection sequence, speed, pressure, and layer ratio (5%–95% adjustable) to meet various cost and performance requirements.

Seamless Compatibility with Single-Color Molds: Nozzle size, locating ring, and installation distance match Konger standard single-color machines. Runner and gate systems are fully interchangeable. No repositioning, hole expansion, nozzle replacement, or hot runner / diverter plate modification is needed.

Fast Mode Switching: Connect water and electric circuits per single-color machine standards. Switch between single-color and sandwich / two-color production in just 10–30 minutes without complex debugging.

II. Applicable Industries & Typical Products

1. Automotive (Core Application)

Focus: weight reduction, cost saving, sound insulation, weather resistance

Interior: door panels, instrument panels, armrests, pillar trims, glove boxes

(Outer: ABS / PC+ABS; Inner: recycled PP)

Exterior & Structural Parts: bumper skins, mirror housings, wheel covers, battery pack housings

Functional Parts: gear shifters, air vents, wiring harness brackets

(Supports hard-soft composite & multi-color one-shot molding)

2. Consumer Electronics & Home Appliances

Electronics: mobile / tablet frames, earphone cases, router / set-top box housings, connectors

Home Appliances: refrigerator / washing machine panels, air conditioner housings, rice cooker bases, small appliance handles

3. Daily Necessities & Packaging

Daily Use: plastic tableware, food containers, bins, baskets, toy shells, toothbrush handles

Packaging: food crates, logistics boxes, cosmetic bottles / caps, beverage preforms

4. Medical & Healthcare

Consumables: syringes, infusion components, medical trays, pill boxes

Devices: monitor housings, rehabilitation handles, diagnostic equipment shells

5. Building Materials & Logistics

Building Materials: pipe fittings, trunking, decorative panels, floor drains

Logistics: pallets, parts boxes, forklift guards

III. Core Advantages vs. Traditional Machines

1. Mold & Cost Advantages

Zero Mold Modification: Direct reuse of existing single-color molds, saving 50%–80% of mold development & trial costs.

High Flexibility: One mold supports 4 processes: single-color, sandwich, two-color, mixed-color.

Longer Mold Life: No rotary plate; uniform force reduces wear, extending life by 30%+.

Material Cost Reduction: Inner layer uses high recycled content; overall material cost reduced by 15%–25%.

2. Production & Efficiency Advantages

Fast Switching: 10–30 minutes vs. hours for traditional two-color machines.

Shorter Cycle: 20%–40% faster cycle time than rotary two-color machines; output increased by 30%+.

Higher Yield: Smooth surface, no weld lines, flashing or delamination. Yield improved by 5%–10%.

3. Process & Quality Advantages

Excellent Molding Quality: Strong molecular bonding between skin and core; no delamination.

Wide Material Compatibility: Supports PP, PE, ABS, PC, PA, TPE, hard-soft combinations.

Stable Precision: Closed-loop control for high-precision parts.

4. Investment & Operation Advantages

Lower Investment: 30%–50% cheaper than imported sandwich / two-color machines.

Simpler Maintenance: No complex rotary mechanism; low failure rate.

Space Saving: Footprint 15%–25% smaller than rotary two-color machines.

Energy Saving: Servo system reduces power consumption by 20%–80%.

IV. Product Market Competitive Advantages

1. Outstanding Cost Competitiveness

Raw material cost reduced by 15%–25%, plus savings on labor, assembly, and energy. Offers clear price advantage while maintaining quality.

2. Premium Quality & Performance

Outer virgin layer ensures appearance, scratch resistance, weatherability, or disinfection resistance. Performance matches full-virgin products, supporting higher pricing and profit margins.

3. Short Delivery & Fast Response

Short cycles and fast mode switching support quick order response, especially for multi-variety small-batch production. Delivery efficiency improved by over 30%.

4. Strong Differentiation

Produces sandwich, two-color, mixed-color, and hard-soft integrated products, helping customers avoid low-end homogeneous competition.

5. Eco-Friendly & Compliant

High recycled material usage aligns with circular economy and carbon neutrality policies, meeting high-end brand environmental standards.

V. Conclusion

Ningbo Konger CMS Sandwich / Co-Injection Molding Machine is built around true sandwich one-shot molding and the revolutionary parallel dual injection + single shared nozzle design. It enables zero-modification upgrade from single-color molds and fully optimizes cost, efficiency, quality, and sustainability.

It serves automotive, electronics, home appliances, daily necessities, medical, building materials, logistics, and other industries, supporting both large-scale precision manufacturing and cost-effective flexible production for SMEs.

With its comprehensive advantages, CMS machines help plastic injection enterprises lower upgrading costs, improve efficiency, avoid price wars, and strengthen market position — making it one of the optimal choices for transformation and upgrading in the injection molding industry.