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Precision Plastic Molding Solutions from Your trusted partner

Henry Precision is a company that handles research, development, production, and sales of plastic molding. With a skilled design and technical team, we meet demanding requirements for high precision injection molding.

Our molds feature exceptional precision and smooth surfaces, earning global customer recognition for outstanding quality and performance.

Precision Plastic Molding Workshop

PRECISION PLASTIC MOLDING - EVERYTHING YOU NEED TO KNOW

What Is Precision Plastic Molding

Precision plastic injection molding is a highly accurate manufacturing process, ensuring dimensional tolerances within 0.01 mm, ideal for applications demanding exceptional precision.

Used widely in aerospace, automotive, precision instruments, sports equipment, and consumer products, it enhances reliability, functionality, and durability while minimizing material waste and costs.

At Henry, we achieve injection pressures over 25 MPa, speeds above 300 mm/s, and dimensional accuracy of 0.001 mm with a quality deviation rate under 0.1%.

We provide OEM plastic injection molding services. From prototype plastic injection molding to mass production, we excel in the this field, ensuring superior quality and reliability at every stage.

Applications of Precision Plastic Molding products

Precision injection molding is primarily used in aerospace, auto parts, precision instruments, sports equipment, testing tools, and other industrial & civil products.

MEDICAL DEVICE

NEW ENERGY AUMOTIVE PARTS

3C DIGITAL PRODUCTS

AUDIO PRODUCTS

HIGH-END BATHROOM PRODUCTS

Precision Plastic Molding Process

Design Review & DFM Analysis

Evaluate part design for manufacturability and optimal performance

Mold Fabrication

High-precision mold making for consistent results

Injection Molding

Precision plastic injection molding with tight tolerances

Quality Inspection

CMM measurement and optical inspection to ensure accuracy

Delivery & Quality Assurance

On-time delivery backed by strict quality control

Custom Plastic Injection Molding - Choose Henry as Your Trusted Partner

Industry-Specific Expertise

  • Quality Control System: Strict protocols ensure products consistently meet high standards.
  • Advanced Equipment: Our factories are equipped with cutting-edge tools, including high-end plastic injection machines, EDM, drilling, CNC machining, and milling devices.
  • Precision Control: We accurately manage injection parameters, achieving dimensional accuracy of 0.001 mm and ensuring product stability. Our capabilities include handling injection pressure over 25 MPa and injection speeds of 300 mm/s or higher.

Advanced Innovative Ability

  • Technical Strength and Innovation: Our skilled technical team excels in developing new technologies, products, and solutions.
  • Mold Design Expertise: We specialize in designcomplex plastic injection molds to meet unique product requirements.
  • Material Research: Our deep understanding of material performance helps optimize product quality.

Customer-Oriented Service

  • Custom Solutions: Tailored injection molding services based on client requirements.
  • Process Optimization: Continuous improvements reduce costs and enhance efficiency.
  • Rapid Response: We quickly address customer needs with effective solutions.

High-Quality Materials Used in Plastic Injection Molding

We work with trusted partner suppliers for raw materials. If needed, we are happy to use materials provided by client-designated suppliers or the clients themselves, provided they align with the required standards.

 polypropylene (PP) good chemical resistance, heat resistance and electrical insulation, relatively low cost, commonly used in automotive parts, daily necessities.
 polycarbonate (PC) high strength, good transparency, excellent heat resistance, commonly used in electronic appliances, optical instruments, building materials, etc..
polystyrene (PS)good insulation and processing performance, commonly used in electronic product shells, toys and so on.
acrylonitrile-butadiene-styrene copolymer (ABS)good overall performance, with high strength, toughness and surface gloss, widely used in home appliances, automobiles, electronics and other fields.
 Polyamide (PA, nylon)high abrasion resistance and mechanical strength, commonly used in gears, bearings, automotive parts and so on.
polyformaldehyde (POM)excellent mechanical properties, wear resistance and self-lubricating, commonly used in precision machinery parts, automotive parts, etc..
polymethyl methacrylate (PMMA, acrylic)extremely high transparency, good optical properties, commonly used in lighting fixtures, optical instruments.
polyethylene (PE)including high-density polyethylene (HDPE) and low-density polyethylene (LDPE), with good corrosion resistance and insulation, commonly used in packaging materials, pipelines and so on.
 polyvinyl chloride (PVC)good chemical resistance, low price, commonly used in building materials, pipelines, etc..
thermoplastic polyester (PBT)good heat resistance, moisture resistance and electrical properties, commonly used in electronic and electrical appliances, automotive parts and so on. Each of these materials has its own characteristics and scope of application in precision plastic molding, the specific choice of which material depends on the product performance requirements, cost budget and production process and other factors.
Raw materials used in high precision plastic injection molding

Cases

Medical face mask with straps and a soft nose bridge
Cases

Solving Medical Mask Production Challenges with Innovative Materials

Challenges in Medical Mask Production In medical-grade product production, especially for breathing masks, functionality, safety, and durability are critical. Henry Precision faced several challenges in designing medical masks using Covestro PC-2458 (a high-temperature-resistant polycarbonate) and JAPEN Shin Etsu2090-40 (liquid silicone rubber, LSR). These materials meet FDA’s biocompatibility requirements and provide the necessary support, sealing properties, and performance. Material Compatibility and Bonding Issues Bonding liquid silicone to plastic components is essential for maintaining structural integrity. The high fluidity of liquid silicone can cause gas traps, degumming, and non-stick defects. To address this, the adhesive process had to ensure a strong, reliable

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Medical device with a white sealing ring accessory highlighted beside it.
Cases

High-Performance Sealing Rings for Medical Devices

In the production of sealing rings for medical devices, maintaining precision and ensuring high-quality performance is crucial. Henry Precision recently encountered several challenges while manufacturing a sealing ring with WACKER 3038-70 silicone material. The product’s small size, internal instability, and complex structure required advanced design, meticulous attention to detail, and high-precision mold processing.   Challenges Internal Size InstabilityThe sealing ring had a relatively small internal size, which was prone to instability. This caused issues such as partial silicon filling, leading to potential quality defects. The solution required careful mold design and machining precision to ensure stable production. Multiple Cavities and

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Cases

Efficient Prototype Molding for Quality Respiratory Masks

For this project, Henry Precision was tasked with producing a respiratory mask using a rapid prototype mold. The product was made from Liquid Silicone Rubber (LSR) and required precise manufacturing to meet high standards. The mold size was Wx300 Lx300 H (mm), and it featured a cavity of 1. The delivery time was set at 10 days to meet the customer’s needs. Manufacturing process Rapid prototype mold (referred to as sample mold) Material LSR Insert Material Steel S136 Product size 124x109x73mm Mold size Wx300 Lx300 H (mm) (Lung Kee standard mold holder: 3030) Cavity 1 Delivery time 10 days Project

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Partner with Henry-precision to Experience:

 

Premium Precision Plastic Excellence

  • Advanced in-house tooling for precise plastic injection moldedcomponents
  • Flash-free production with minimal waste
  • Streamlined manufacturing requiring no post-processing
  • Specialized cold runner systems for optimal material control

Advanced Manufacturing Capabilities

  • State-of-the-art automated production facilities
  • High-precision injection molding systems
  • Integrated quality control processes
  • Industry-leading 6Smanagement implementation

Expert Technical Support

  • In-house mold design and fabrication expertise
  • 30+specialized technical professionals
  • Customized R&D solutions

Comprehensive project support from concept to production

Let’s build the future with innovation.

Please provide the following details to help us better understand your needs and get in touch with you as soon as possible.

You can send us 3D drawings in STL, STEP, IGES and 2D drawings in PDF. We will provide accurate quotations within 24 hours.

From concept to completion, we provide a one-stop silicone mold manufacturing service.

 

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