Micro molding / Micro injection molding
Micro Molding & Micro Injection Molding Manufacturer in Taiwan
High Precision Micro Plastic Injection Molding with ±0.003mm Part Tolerance
Ming-Li Precision provides high precision micro molding and micro injection molding services for miniature plastic components, micro gears, micro connectors, micro medical parts, electronic components, automotive sensors, micro holes, thin-wall micro parts, and precision engineering applications.
Our micro injection molding capability supports part tolerance up to ±0.003mm and mold tolerance up to ±0.001mm, helping customers achieve high repeatability, stable quality, and reliable mass production for small and complex plastic parts.
With MicroPower micro injection molding equipment, in-house precision tooling, Moldflow analysis, advanced inspection capability, and monthly production capacity up to 15 million micro molded parts, Ming-Li Precision is a reliable partner for global OEM micro molding projects.
Request Micro Molding SolutionsWhat is Micro Molding?
Micro molding, also known as micro injection molding, is a specialized injection molding process used to produce extremely small plastic parts with micro-scale features, thin walls, tight tolerances, and high dimensional accuracy.
This process is different from standard injection molding because it requires precise shot control, highly accurate mold manufacturing, optimized material flow, advanced process control, and specialized part handling for miniature components.
Micro molding is widely used when the component is very small, lightweight, complex, or requires micron-level accuracy for performance-critical applications.
Ming-Li Precision Micro Injection Molding Capability
| Capability | Description |
|---|---|
| Micro Molded Part Tolerance | Up to ±0.003mm, depending on product design, material, and measurement method |
| Micro Mold Tolerance | Up to ±0.001mm for high precision micro mold manufacturing |
| Minimum Shot Weight | Micro shot weight capability for extremely small plastic parts; minimum part weight depends on material, mold design, and geometry |
| Minimum Wall Thickness | Thin-wall micro molding capability available; wall thickness can be optimized depending on material flow, part structure, and mold design |
| Micro Feature Capability | Micro gears, micro holes, micro ribs, micro connectors, micro fluid channels, and micro optical features |
| Monthly Capacity | Up to 15 million pcs of micro molding and micro injection parts |
| Mold Capacity | Up to 15 sets of molds per month |
| Micro Injection Equipment | WITTMANN BATTENFELD MicroPower micro injection molding machine |
| Cleanroom-Compatible Concept | Machine concept can support clean room-compatible production with laminar flow unit according to ISO 14644-1 class 6 clean air concept |
| Micro 2-Component Molding | COMBIMOULD concept for micro 2-component molding with two injection aggregates and rotary table design |
| Engineering Support | DFM review, mold design, material selection, Moldflow analysis, and production optimization |
MicroPower Micro Injection Molding Equipment
Ming-Li Precision uses high precision MicroPower micro injection molding technology from WITTMANN BATTENFELD. This equipment is designed for producing small, precise, and high-quality micro injection molded components with excellent process stability.
The MicroPower concept provides cost-efficiency through shorter cycle times, lower material consumption, and reduced energy usage compared with conventional injection molding machines for very small parts.
Precise Shot Control
Micro molding requires highly accurate shot volume control to produce consistent micro-sized plastic components.
Lower Material Waste
MicroPower equipment helps reduce material waste, which is important when processing high-value engineering plastics such as PEEK, LCP, PPS, and PEI.
Cleanroom-Compatible Design
The machine concept supports cleanroom-compatible production for medical micro molding, optical micro molding, and electronic micro components.
Micro 2-Component Molding
COMBIMOULD options support micro 2-component molding for advanced multi-material micro parts.
Micro 2K Molding & Micro Multi-Shot Molding
Micro 2K molding, also known as micro two-component molding or micro multi-shot molding, is an advanced process used to combine two materials or two colors in a miniature plastic component.
This technology requires extremely high mold alignment precision, stable material flow, accurate shot control, and precise rotary positioning. It is suitable for micro parts that require soft-touch areas, sealing structures, functional material combinations, or integrated multi-material features.
Micro Two-Material Parts
Combines rigid and soft materials in miniature plastic parts for sealing, grip, or functional integration.
High Alignment Precision
Micro 2K molding requires precise mold alignment and material positioning to ensure stable geometry and repeatability.
Micro Sealing Features
Suitable for small components that require integrated soft sealing areas or waterproof features.
Advanced Micro Product Design
Supports compact, high-function, multi-material micro components for medical, electronics, and precision engineering applications.
Micro Molding Materials for High Precision Plastic Components
Material selection is critical in micro injection molding. Materials must provide excellent flowability, dimensional stability, mechanical strength, thermal resistance, and compatibility with very small mold cavities and micro features.
| Material | SEO Application Keyword | Key Properties | Typical Micro Molding Applications |
|---|---|---|---|
| LCP | LCP Micro Connectors | Excellent flowability, dimensional stability, heat resistance, and electrical performance | Micro connectors, thin-wall electronic components, precision micro parts |
| PEEK | PEEK Medical Micro Components | High temperature resistance, chemical resistance, strength, and wear performance | Medical micro parts, aerospace micro components, high-performance micro gears |
| PPS | PPS Automotive Micro Sensors | Heat resistance, chemical resistance, dimensional stability, and electrical insulation | Automotive sensors, electronic micro components, industrial micro parts |
| PA / Nylon | Nylon Micro Gears | Good mechanical strength, wear resistance, toughness, and fatigue resistance | Micro gears, small mechanical parts, precision moving components |
| PBT | PBT Micro Connector Housings | Good dimensional stability, electrical properties, and heat resistance | Micro connectors, electronic housings, sensor components |
| PC | PC Micro Optical Parts | High impact resistance, transparency options, and dimensional stability | Micro optical parts, small housings, medical device components |
| PMMA | PMMA Micro Lenses | Excellent optical clarity and surface quality | Micro lenses, optical components, light guide parts |
| PEI | PEI High-Temperature Micro Components | High heat resistance, strength, and dimensional stability | High-performance electronic and medical micro components |
| POM | POM Micro Mechanical Parts | Low friction, high wear resistance, and good dimensional stability | Micro gears, micro mechanical parts, sliding components |
| ABS | ABS Micro Housings | Good toughness, easy processing, and stable surface quality | Small housings, consumer micro parts, electronic components |
Key Elements for Successful Micro Injection Molding
Precision Tooling Design
Micro molds require highly accurate cavity design, gate placement, part ejection, cooling, and surface finish control.
Material Flow Control
Micro molding materials must fill very small cavities and fine features without short shots, burn marks, or material degradation.
Micro Shot Control
Precise material dosing and injection control are essential for consistent part weight, dimensions, and repeatability.
Micro-Hole and Thin-Wall Features
Micro-hole molding and thin-wall micro molding require accurate tooling, stable process control, and material flow optimization.
Advanced Inspection
Optical measurement, microscope inspection, and dimensional verification are essential for micro molded parts.
Part Handling
Micro parts require careful handling, packaging, and automation to prevent damage, contamination, or loss.
Micro Mold Design Requirements
Micro molds are specialized tools designed to produce small and intricate plastic components with extremely tight tolerances. The mold design and manufacturing quality directly determine the success of micro injection molding projects.
| Design Factor | Micro Molding Requirement |
|---|---|
| Micro Cavity Accuracy | Micro mold cavities must be manufactured with extremely high accuracy to reproduce fine details and small features. |
| Gate Design | Gate size and location must support stable filling while minimizing gate vestige and part deformation. |
| Venting | Proper venting is critical to prevent trapped gas, burn marks, incomplete filling, and poor surface quality. |
| Cooling Control | Precise cooling design helps reduce warpage, shrinkage variation, and cycle time instability. |
| Ejection Design | Ejection must protect delicate micro features and prevent damage during part release. |
| Surface Finish | Polishing, coating, or micro-texturing may be required depending on optical, medical, or functional requirements. |
| Tool Maintenance | Micro molds require frequent inspection, cleaning, and maintenance to maintain stable quality over time. |
Micro Molding Design Guidelines
- Maintain uniform wall thickness whenever possible.
- Avoid unnecessary sharp corners and extremely deep ribs.
- Use proper draft angles to support smooth part ejection.
- Design micro holes, micro ribs, and micro gears within realistic tooling and molding capability.
- Select materials with good flow properties and dimensional stability.
- Optimize gate location for balanced filling and minimal gate marks.
- Consider part handling and packaging during early design stages.
- Validate micro part dimensions with suitable metrology equipment.
Micro Injection Molding Applications
Micro injection molding is used across industries that require miniaturization, tight tolerances, high precision, and advanced functional integration.
Medical Micro Molding
Micro molded medical components, PEEK medical micro components, microfluidic parts, micro connectors, surgical instrument components, diagnostic device parts, and drug delivery components.
Electronics Micro Molding
LCP micro connectors, micro switches, sensor housings, electronic micro parts, hearing aid components, wearable device components, and thin-wall micro parts.
Automotive Micro Molding
Automotive sensors, PPS automotive micro sensors, micro connectors, micro gears, lightweight micro components, and precision functional plastic parts.
Micro Gears and Micro Mechanics
High precision micro gears, POM micro mechanical parts, small mechanical parts, miniature housings, sliding components, and micro mechanical assemblies.
Microfluidics
Microfluidic channels, lab-on-a-chip components, diagnostic cartridges, micro valves, micro holes, and micro manifolds.
Optics and Photonics
PMMA micro lenses, PC micro optical parts, light guides, optical holders, miniature optical components, and precision transparent molded parts.
Ming-Li Capabilities in Micro Injection Molding
Ming-Li Precision provides complete micro injection molding support from early DFM review to mold manufacturing, molding trials, mass production, dimensional inspection, and quality assurance.
| Capability Area | Ming-Li Precision Support |
|---|---|
| Micro Mold Design | Custom micro mold design for small, complex, and high precision plastic components |
| In-House Tooling | High precision mold manufacturing and tooling maintenance for micro cavities, micro holes, micro gears, and thin-wall micro features |
| Micro Injection Molding | Specialized micro injection molding equipment for stable small-part production |
| Micro 2K Molding | Micro two-component molding concept for advanced multi-material micro plastic components |
| Material Selection | Engineering plastic selection based on flowability, strength, dimensional stability, and application needs |
| Quality Control | Dimensional inspection, microscope inspection, optical measurement, and process verification |
| Mass Production | Production capacity up to 15 million micro molded parts per month |
| Quality System | IATF 16949 certified manufacturing system |
New Developments in Plastic Micro Injection Molding Technology
Micro injection molding continues to evolve with improvements in micro tooling, high-performance materials, automation, microfluidics, precision inspection, and process simulation.
- Advanced engineering plastics for high performance micro parts
- PEEK micro molding for high-temperature and medical micro components
- LCP micro injection molding for thin-wall micro connectors and precision electronic parts
- Micro tooling technologies such as micro EDM, micro milling, laser machining, and precision grinding
- Micro-hole molding and thin-wall micro molding for advanced miniature components
- Microfluidic and lab-on-a-chip integration
- High-speed and high-volume production with multi-cavity micro molds
- Surface micro-texturing and precision surface control
- Simulation tools for mold design and process optimization
- Cleanroom-compatible micro molding concepts for medical and electronic applications
Looking for a Micro Molding or Micro Injection Molding Manufacturer?
Contact Ming-Li Precision for micro molding DFM review, material selection, mold design, micro injection molding production, and high precision micro plastic component manufacturing.
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