Custom Plastic Injection Molding Services
Get free quotes and DFM analysis for your plastic injection molding projects, with machines ranging from 30t to 3000t and various tooling options.
- No minimum order quantity
- T1 samples as fast as 2 weeks
- Parts shipped within 1 to 15 days
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- All uploads are secure and confidential.
Our Plastic Injection Molding Capabilities
Injection Mold Tooling
We provide a range of injection mold tooling, including single cavity, multi-cavity, and family molds, to meet the demands of both small-volume prototyping and large-scale production.
Overmolding
Integrating multiple materials to create durable, multi-functional components that improve ergonomics and overall part performance.
Insert Molding
Incorporating metal or other inserts into molded plastic to create stronger, more durable parts with enhanced functionality.
Rapid Tooling
Rapid tooling is an efficient and cost-effective approach for creating molds and tools, perfect for short production runs and prototypes. It leverages advanced methods like 3D printing and CNC machining to speed up development and lower costs.
How Koonze Model Injection Molding Process Work
Our Factory
Why Choose Our Injection Molding Services
Precision Manufacturing
Our ISO-certified facilities conduct rigorous in-process and post-production tests, ensuring each custom molded part meets the highest quality standards.
Quick Turnaround
With a robust supply chain and local certified factories, we fast-track development, delivering precision parts in as little as 2 weeks.
Expert Guidance
Leverage the expertise of our engineers with over 10 years of experience in injection molding, offering support on mold design, material selection, and finishing.
Cost-Effective Solutions
By optimizing production processes, we offer competitive pricing without compromising on quality, providing high-performance parts at a cost-effective rate.
Get Precision with Custom Injection Molding Solutions
Contact Koonze Model today for high-quality, cost-effective injection molding solutions tailored to your needs.
Materials for Plastic Injection Molding
ABS
Impact-resistant with a smooth or matte finish; perfect for electronics, toys, and automotive parts.
| Color: | White, Black, Cream, Milky |
| Surface: | Smooth, glossy; resistant to impact, moisture, and some chemicals. |
| Subtypes : | ABS Beige (Natural) |
ABS+PC
Combining the impact resistance of ABS and the heat resistance of PC, ideal for demanding applications in electronics, automotive, and industrial sectors.
| Color: | Black, White, Grey |
| Surface: | Smooth, glossy, durable, resistant to impact and high temperatures. |
| Subtypes : | ABS+PC Black ABS+PC White |
PC
High clarity and impact resistance; suitable for lenses, safety gear, and durable housings.
| Color: | Black, Translucent (or polished transparent) |
| Surface: | Transparent or opaque; high-gloss or textured finishes available. |
| Subtypes : | Flame Retardant Transparent PC Food Grade PC-Transparent PC Black PC Transparent PC White PC Yellowish White |
PC+GF30
Enhanced with 30% glass fiber, this material offers superior strength and rigidity, ideal for high-performance automotive and industrial applications.
| Color: | Black, Natural |
| Surface: | Smooth, matte finish, highly resistant to impact, heat, and chemicals. |
| Subtypes : | PC+GF30 Black |
PMMA
Transparent and weather-resistant; ideal for lighting, signage, and display products.
| Color: | Translucent, Black |
| Surface: | Transparent and glossy; resistant to weathering. |
| Subtypes : | PMMA Black, PMMA Transparent, PMMA White |
POM
POM is a high-performance plastic known for its outstanding dimensional stability, low friction, and high strength. It’s widely used in precision mechanical parts such as gears, bearings, and other components that require high accuracy and can withstand significant stress.
| Color: | Black, White, Blue, Dark brown |
| Surface: | Smooth or semi-gloss; resistant to wear, moisture, and chemicals. |
| Subtypes : | Dark brown (coffee) POM 100AF POM Black POM Blue POM White |
PA
Tough and wear-resistant with excellent mechanical properties; used in gears, bearings, and automotive components.
| Color: | Black, White, Beige |
| Surface: | Glossy or matte; can be reinforced with fibers for added strength. |
| Subtypes : | PA(Nylon) Blue PA6 (Nylon)+GF15 Black PA6 (Nylon)+GF30 Black PA66 (Nylon) Beige(Natural) PA66 (Nylon) Black |
PE
Polyethylene is a lightweight, durable, and impact-resistant material commonly used in packaging, containers, and piping. Its strong chemical resistance and long-lasting properties make it perfect for outdoor and high-moisture environments.
| Color: | Black, White |
| Surface: | Smooth or semi-gloss; resistant to moisture, chemicals, and wear. |
| Subtypes : | PE Black, PE White |
PEEK
High-performance thermoplastic with excellent strength, chemical resistance, and thermal stability, perfect for demanding aerospace, automotive, and medical applications.
| Color: | Natural, Black |
| Surface: | Smooth, matte finish, resistant to high temperatures, wear, and aggressive chemicals. |
| Subtypes : | PEEK Beige(Natural) PEEK Black |
PP
Flexible, chemical-resistant, and cost-effective; used in packaging, medical devices, and automotive parts.
| Color: | Many colors |
| Surface: | Semi-gloss or matte; resistant to moisture and chemicals. |
| Subtypes : | PP Black
|
PP+GF30
A reinforced thermoplastic with enhanced rigidity, chemical resistance, and dimensional stability, ideal for automotive, industrial, and electrical applications.
| Color: | Black, Gray |
| Surface: | Smooth, matte finish, resistant to impact, moisture, and high temperatures. |
| Subtypes : | PP+GF30 Black |
PPA
A high-performance material with excellent thermal stability, chemical resistance, and low moisture absorption, suitable for automotive, electrical, and industrial applications.
| Color: | Black, Natural |
| Surface: | Smooth, matte finish, resistant to high temperatures, moisture, and harsh chemicals. |
| Subtypes : | PPA Beige |
PET
PET is strong, chemical-resistant, and moisture-resistant, making it suitable for a range of applications like food containers, beverage bottles, and textiles. Its durability and recyclability make it a preferred material in packaging.
| Color: | White, black |
| Surface: | Smooth, matte, or glossy; excellent chemical resistance. |
| Subtypes : | PET Black, PET White |
PET+GF30
A glass-fiber reinforced material offering high strength, stiffness, and dimensional stability, ideal for automotive, electrical, and structural applications.
| Color: | Black, Natural |
| Surface: | Smooth, matte finish, highly resistant to heat, wear, and chemicals. |
| Subtypes : | PET+GF30 Black PET+GF30 White |
PPS
PPS offers superior chemical resistance and thermal stability, making it perfect for automotive, aerospace, and industrial applications. It’s commonly used in components exposed to high temperatures and harsh chemicals.
| Color: | Black, White |
| Surface: | Smooth or matte; highly resistant to high temperatures, moisture, and chemicals. |
| Subtypes : | PPS Black PPS White |
PPS+GF30
A glass-fiber reinforced high-performance plastic known for excellent chemical resistance, high temperature stability, and dimensional accuracy, ideal for automotive, electrical, and industrial components.
| Color: | Black, Natural |
| Surface: | Smooth, matte finish, resistant to high temperatures, wear, and chemicals. |
| Subtypes : | PPS+GF30 Black PPS+GF30 White |
PS
PS is lightweight and easy to machine, making it ideal for models, prototypes, and low-strength applications. Its moldability makes it a popular choice for packaging and disposable products.
| Color: | Transparent |
| Surface: | smooth, glossy, easy to mold. |
| Subtypes : | PS Transparent |
PVC
PVC is a flexible and affordable material known for its excellent chemical resistance and long-lasting durability. Its strength and adaptability make it commonly used in plumbing, medical devices, electrical cables, and construction materials.
| Color: | Grey |
| Surface: | smooth, matte, glossy, excellent chemical resistance. |
| Subtypes : | PVC Grey |
PTFE (Teflon)
PTFE is renowned for its superior chemical resistance and low friction, making it ideal for non-stick coatings, gaskets, seals, and bearings. It excels in extreme environments, withstanding high temperatures and harsh chemicals.
| Color: | Black, White |
| Surface: | Smooth, glossy; highly resistant to friction, chemicals, and high temperatures. |
| Subtypes : | Teflon (PTFE) Black, Teflon (PTFE) White |
HDPE
Durable, lightweight, and chemical-resistant; ideal for containers, pipes, and consumer goods.
| Color: | White, black |
| Surface: | Smooth, matte, or glossy; excellent chemical resistance. |
| Subtypes : | HDPE Black, HDPE White |
HIPS
A tough, impact-resistant material often used in applications requiring good surface finish and ease of processing, ideal for packaging, display units, and prototypes.
| Color: | White, black |
| Surface: | Smooth, glossy finish, easy to paint and thermoform. |
| Subtypes : | HIPS Board White |
LDPE
LDPE is soft, flexible, and offers excellent sealing properties, making it ideal for plastic bags, tubing, and films. Its easy processing and flexibility are perfect for heat sealing and stretchable applications.
| Color: | White |
| Surface: | Smooth, glossy; excellent sealing properties. |
| Subtypes : | LDPE White |
PBT
Strong and electrically insulating; commonly used in electrical and automotive applications.
| Color: | White to Bright Color |
| Surface: | Smooth with a high-gloss finish; easy to paint or plate. |
| Subtypes : | PBT Black PBT Milky White（Natural） |
UPE
UPE is a strong, long-lasting material known for its exceptional abrasion resistance. It is commonly used in high-wear environments like chute linings, hoppers, and conveyor systems, where impact resistance is essential.
| Color: | White, black |
| Surface: | smooth, matte, excellent abrasion resistance. |
| Subtypes : | UPE Black, UPE White |
Injection Mold Surface Finishes
At Koonze Model, we provide SPI surface finishes for injection molded parts. Our experts will guide you in selecting the ideal finish for your project. Upload your design on our quoting platform today and receive a detailed quote within 12 hours.
SPI A
| Finishing Look | High Gloss |
| SPI Finish Grades | SPI A1, A2, A3 |
| Surface Roughness Ra (μm) |
SPIA1: 0.012 to 0.025 SPIA2: 0.012 to 0.025 SPIA3: 0.05 to 0.10 |
SPI B
| Finishing Look | Semi Gloss |
| SPI Finish Grades | SPI B1, B2, B3 |
| Surface Roughness Ra (μm |
SPI B1: 0.05 to 0.10 SPI B2: 0.10 to 0.15 SPI B3: 0.28 to 0.32 |
SPI C
| Finishing Look | Low Gloss |
| SPI Finish Grades | SPI C1, C2, C3 |
| Surface Roughness Ra (μm) |
SPI C1: 0.35 to 0.40 SPI C2: 0.45 to 0.55 SPI C3: 0.63 to 0.70 |
SPI D
| Finishing Look | Matte |
| SPI Finish Grades | SPI D1, D2, D3 |
| Surface Roughness Ra (μm) |
SPI D1: 0.80 to 1.00 SPI D2: 1.00 to 2.80 SPI D3: 3.20 to 18.0 |
Plastic Injection Molding Capabilities
| Service | Details |
|---|---|
| Lead Time | Starts from 5 business days, including quick quote responses and design-for-manufacturing (DFM) feedback. |
| Materials | A wide range of plastics, including custom sourcing and matching. |
| Machines Available | Single, multi-cavity, and family molds; press tonnage ranging from 50 to over 3,700; automated side actions or manual core loading. |
| Inspection and Certification Options | ISO 9001:2015, ISO 13485:2016, IATF 16949:2016 |
| Tool Ownership | Customer-owned molds with maintenance services. |
| Mold Cavity Tolerance | +/- 0.005" during mold machining, with an additional +/- 0.002" per inch to account for shrinkage. |
| Part to Part Repeatability | +/- 0.004" or less |
| Critical Feature Tolerances | Tighter tolerances can be requested, but they may increase tooling costs due to additional sampling and refinement. Koonze Model will mill critical features to a steel-safe condition. |
| Available Mold Types | Steel and aluminum; production grades range from Class 105 (prototype molds) to Class 101 (high-volume production molds). Koonze Model typically manufactures Class 104, 103, and 102 molds. |
Custom Injection Moldings Design Guidelines
| Feature | Tip | |
|---|---|---|
| Undercuts | Minimize undercuts by incorporating pass-thru coring, which reduces the complexity and cost of the tool ejection mechanisms. | |
| Wall Thickness | Avoid wall sink and voids by ensuring consistent wall thickness. Thinner walls help shorten cycle time and lower costs. | |
| Drafts | Design parts with a minimum draft angle of 0.5° to 5° for surfaces with medium textures to ensure easy ejection. | |
| Ribs/Gussets | Ribs should be 40-60% of the wall thickness and designed with a draft angle for proper molding. | |
| Bosses | Bosses should have a depth of 30% of the wall thickness, with a 30% edge groove, and be attached to side walls or ribs for added strength. |
For detailed information on these design recommendations for manufacturing, please contact us.
Precision Quality Control for Every Injection Molding Part
At Koonze Model, quality control is at the core of our injection molding process to ensure each part meets our high standards for precision and reliability.
Start with our Design Review & DFM Feedback process, designed to optimize moldability. During production, we conduct in-process inspections using advanced tools like CMM’s, XRF analyzers, and micrometers.
To guarantee product quality, we perform First Article Inspections (FAIs), dimensional checks and functional testing on every part we manufacture to ISO 9001:2015 standards and your expectations.
Each part goes through an additional final inspection step that ensures it satisfies these stringent measures.
- More than 5 quality engineers
- Certified with ISO 9001:2015, ISO 13485, ISO 14001, and IATF 16949
- Over ten advanced inspection tools, including micrometers, height gauges, CMM (Coordinate Measuring Machines), spectrometers, Ra/Rz measuring instruments, hardness testers, Vernier calipers, thread gauges, and more, ensure precision quality control.
Applications of Injection Molding
Applications of Injection Molding
Koonze Model’s injection molding services provide reliable, cost-efficient solutions tailored to meet the unique needs of industries like automotive and electronics.
Get your custom quote today and scale up quickly.
FAQs on Custom Injection Molding Services
Plastic Injection Molding Resources
