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ISO 9001 Certified Overmolding 2-Shot Injection Molding Service with Rotary Platen Technology and 300,000 – 800,000 Shots Mold Life
| Place of Origin | Xiamen, China |
|---|---|
| Brand Name | KDET |
| Certification | ISO 9001:2015, IATF 16949 |
| Model Number | KD-OV-2S007 |
| Minimum Order Quantity | 500 pieces |
| Price | Based on part complexity and volume |
| Packaging Details | Custom PE bags + export cartons + pallets |
| Delivery Time | 15-30 working days mold; 7-15 days production |
| Payment Terms | T/T, L/C at sight, PayPal |
| Supply Ability | 5,000,000 pieces per year |
Product Details
| Molding Process | 2-Shot Rotary, Insert Overmolding, Multi-Material Injection | Material Combinations | PP+TPE, PC+TPU, ABS+TPE, PA66+LSR, PC+PMMA |
|---|---|---|---|
| Machine Type | Dual-injection With Rotary Platen, 150T-450T | Mold Material | S136, H13, 718H With Nitriding/PVD Coating |
| Mold Life | 300,000 – 800,000 Shots | Cycle Time | 30-60 Seconds Per Complete Part |
| Bonding Methods | Chemical, Mechanical Interlock, Surface Treatment | Tolerance | ±0.05mm |
| Certification | ISO 9001:2015, IATF 16949 | ||
| Highlight | ISO 9001 Certified Overmolding Injection Molding Service,Rotary Platen Technology 2-Shot Injection Molding Service,300,000 – 800,000 Shots Mold Life Dual-Injection Molding Service |
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Product Description
KDET provides advanced overmolding and 2-shot (two-shot) injection molding services that combine multiple materials into a single integrated component. Our dual-injection molding capabilities enable the creation of complex parts with rigid substrates overmolded with soft-touch TPE, gasket seals directly molded onto housings, and multi-color aesthetic components — all produced in a single manufacturing cycle. Since 2007, we have delivered over 500 overmolding projects for automotive, medical, consumer electronics, and industrial clients worldwide.
Company Strength: 18 years of injection molding excellence since 2007 | ISO 9001:2015 & IATF 16949 certified | 40-50 skilled professionals | 80%-90% export to 30+ countries | 5,000,000+ pieces annual capacity | Full in-house tooling, molding, QC, and logistics.
Product Solutions
KDET provides world-class overmolding 2-shot solutions engineered for the demanding requirements of global OEM manufacturers. With 18 years of industry experience and a fully integrated manufacturing facility in Xiamen, China, we deliver end-to-end solutions from engineering consultation and DFM analysis through mold manufacturing, production, quality assurance, and global logistics. Our structured project management approach ensures clear milestones, transparent communication, and documented quality at every stage.
Key Features- 2-Shot Rotary Platen Technology: Our dedicated 2-shot injection molding machines feature rotary platen systems that mold the substrate in the first station, rotate 180°, and inject the second material, achieving precise material bonding in a single cycle with no manual handling.
- Material Bonding Expertise: We achieve excellent adhesion between substrate and overmold materials through optimized processing parameters including melt temperature profiling, mold temperature control, and injection timing. Chemical bonding, mechanical interlocking, and surface treatment techniques are selected based on material combination requirements.
- Common Material Combinations: PP+TPE (soft-grip tools), PC+TPU (protective cases), ABS+TPE (ergonomic grips), PA66+LSR (sealing gaskets), PC+PMMA (transparent windows), and PBT+TPE (automotive seals) are among our most frequently processed combinations.
- Insert Overmolding: For applications requiring metal-to-plastic bonding, we offer insert overmolding where pre-fabricated metal inserts are placed into the mold cavity and encapsulated with thermoplastic material in a single injection cycle.
- Multi-Color & Multi-Texture: 2-shot molding enables distinct color zones, transparent/opaque combinations, and hard/soft transitions within a single component, eliminating secondary assembly and painting operations.
- Design for Overmolding (DFO): Our engineering team provides detailed DFO analysis including material compatibility assessment, bonding mechanism selection, parting line optimization, and gate location planning to ensure successful overmolding from the first trial.
| Parameter | Specification |
|---|---|
| Molding Process | 2-Shot Rotary Injection Molding, Insert Overmolding, Multi-Material Molding |
| Machine Type | Dual-injection unit with rotary platen, 150T – 450T |
| Common Substrates | PP, PC, ABS, PA66, PBT, POM, PMMA |
| Common Overmold Materials | TPE, TPU, TPV, LSR (Liquid Silicone Rubber), PVC soft grade |
| Bonding Mechanism | Chemical (compatible polymers), Mechanical (interlocking geometry), Surface treatment, Adhesive primer |
| Shot Capacity | Substrate: up to 800g; Overmold: up to 400g per shot |
| Mold Material | S136, H13, 718H — with nitriding or PVD coating for wear resistance |
| Mold Life | 300,000 – 800,000 shots |
| Cycle Time | 30-60 seconds (substrate + overmold complete) |
- Automotive Interior: Soft-touch dashboard panels with PP substrate and TPE overmold, integrated seal HVAC components, multi-color switch bezels, and vibration-dampened sensor housings.
- Medical Devices: Ergonomic surgical instrument handles with rigid core and soft-grip overmold, sealed diagnostic device housings, and drug delivery device buttons with integrated seals.
- Consumer Electronics: Waterproof smartphone cases with PC substrate and TPU bumper, ergonomic power tool grips, and wearable device bands with rigid core and soft skin contact surfaces.
- Industrial Equipment: Sealed electrical enclosures with integrated gaskets, vibration-isolated mounting brackets, and chemical-resistant valve bodies with soft-seal overmold.
- Personal Care: Toothbrush handles with rigid core and soft-touch grip zones, razor handles with multi-texture surfaces, and cosmetic packaging with transparent/opaque material combinations.
Industry Success Case: A German power tool manufacturer needed to replace a 3-part assembly (rigid handle + TPE grip + seal) with a single 2-shot molded component to reduce assembly labor and improve waterproof IP67 rating. Our engineering team designed a 2-shot rotary mold with optimized gating for both materials, achieving complete PP-TPE chemical bonding and consistent seal geometry. The integrated component reduced production cost by 28%, eliminated 2 assembly stations, and achieved IP67 certification on first submission. Annual production volume is 1.2 million units with zero field failures after 3 years.
Production Cycle
- Engineering Review & DFM: 2-5 working days — Design analysis, simulation, and feasibility report
- Mold Design & Approval: 3-7 working days — Full 3D mold design for client sign-off
- Mold Manufacturing: 15-30 working days — Precision machining, EDM, assembly
- Mold Trial & Samples: 2-3 working days — T0 samples with dimensional inspection report
- Production & QC: 7-15 working days — Full production with SPC and in-line inspection
- Packaging & Shipment: 2-5 working days — Professional export packaging with full documentation
| Parameter | Details |
|---|---|
| Minimum Order Quantity | 500-5,000 pieces depending on part size and complexity |
| Mold Lead Time | 15-30 working days |
| Sample Lead Time | 3-5 days with existing molds; 5-15 days with new tooling |
| Production Lead Time | 7-15 working days after sample approval |
| Payment Terms | T/T 30% deposit, 70% before shipment; L/C at sight available |
| Shipping Methods | Sea freight (15-40 days), Air freight (3-7 days), Express (3-5 days) |
| Packaging | Custom PE bags + export cartons + fumigated pallets |
Q: What material combinations work best for 2-shot overmolding?
A: The most reliable combinations use chemically compatible materials with similar melt temperatures. PP+TPE, PC+TPU, ABS+TPE, PA66+TPE, and PC+PMMA all demonstrate excellent adhesion. We maintain a material compatibility matrix based on 18 years of processing experience and can test new combinations upon request.
Q: What is the typical cost premium for 2-shot molding vs single-shot?
A: 2-shot tooling typically costs 30%-50% more than equivalent single-shot tooling due to the rotary mechanism and dual-cavity design. However, the total manufactured cost per part is often 15%-30% lower when factoring in eliminated assembly labor, reduced part count, and improved quality consistency.
Q: Can you overmold metal inserts with plastic?
A: Yes, insert overmolding is one of our core capabilities. We can encapsulate threaded brass inserts, steel bushings, electrical contacts, and custom metal stampings. The insert is manually or robotically placed into the mold before each cycle and the plastic is injected around it to form a secure mechanical bond.
Q: What is the minimum wall thickness achievable in the overmold layer?
A: We routinely achieve overmold layer thicknesses down to 0.5mm, depending on material flow characteristics and part geometry. For TPE overmolds, typical minimum thickness is 0.5-1.0mm. Our DFM analysis will validate minimum wall thickness feasibility based on your specific design.
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