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Injection Molding PMMA

What is Injection Molding PMMA?

Our injection moluding acrylic process ensures high optical clarity, excellent weather resistance, and superior surface quality. Using advanced molding technology, we produce acrylic plastic molding components with outstanding durability and scratch resistance.

  • Mold Design: Precision-engineered molds optimize transparency and minimize defects.
  • Processing: PMMA injection molding heats and injects acrylic resin into custom molds.
  • Cooling & Solidification: Controlled cooling minimizes internal stress and optimizes PMMA’s optical clarity.
  • Post-Processing: Treatments like polishing, UV coating, or painting enhance surface and performance.

With expertise in custom acrylic molding, material selection, and process optimization, we provide scalable injection mold acrylic solutions for industries requiring clarity, strength, and weather resistance.

Injection Molding PMMA Parameters Table

Parameter Recommended Range
Wall Thickness 1.0mm - 6.0mm
Maximum Part Size 1500mm x 1000mm x 600mm
Minimum Feature Size 0.5mm - 1.2mm
Tolerances ±0.02mm - ±0.10mm

PMMA Material Properties

Acrylic injection molding is a preferred process for manufacturing transparent and impact-resistant components. Its high optical clarity, UV resistance, and durability make it ideal for applications requiring injection moulding acrylic parts with long-lasting performance. Key Material Properties:

  • Superior transparency – Over 90% light transmittance, excellent for optical applications.
  • High impact resistance – Tougher than glass, reducing breakage risks.
  • UV and weather resistance – Maintains clarity and durability under prolonged sunlight exposure.
  • Scratch resistance – Hard surface withstands abrasion better than many plastics.
Property Density Tensile Strength Flexural Strength Impact Strength (Unnotched) Heat Deflection Temp (0.45 MPa)
Value/Description 1.17 - 1.20g/cm³ 50 - 78 MPa 90 - 130 MPa 2 - 5 kJ/m² 90 - 105℃

Advantages & Disadvantages of PMMA Injection Molding

PMMA (Polymethyl Methacrylate) injection molding is widely valued for its excellent clarity. While PMMA offers impressive visual and performance benefits, it also has some processing and durability limitations. Understanding the advantages and disadvantages of PMMA injection molding service can help you determine whether it’s the ideal fit for your application.

Advantages

Disadvantages

Applications of Acrylic Injection Molding

PMMA is widely used across industries due to its clarity, weather resistance, and durability. As a Injection molding manufacturers our custom acrylic molding services provide high-quality, cost-effective solutions for various applications.

Automotive Industry

Automtoive Injection Molding

Lighting & Optical Components

Lighting & Optical Components

Consumer Goods

High-end Furniture

Medical Devices

Medical Injection Molding Application
If you want something super clear and scratch-resistant—like lenses or LED covers—PMMA (Acrylic) is your best bet. But if the product needs to be tough and impact-resistant—like car light covers or face shields—PC (Polycarbonate) is a better choice. So go with PMMA for clarity and looks, and PC when strength matters more.
Cracks usually happen because of too much internal stress, fast cooling, or exposure to certain chemicals like alcohol or cleaners. Also, sharp corners or thin walls in the design can make it worse. To avoid cracking, it helps to tweak the mold design, lower the injection pressure a bit, and maybe use a more chemical-resistant PMMA type.
Bubbles and flow marks often come from moisture in the material or injection settings not being quite right. Drying the PMMA properly before molding, using the right mold temperature, and adjusting the injection speed usually solves the problem. A good venting design in the mold also helps a lot.
Yes, you can use PMMA in two-shot molding, usually as the outer layer when you want a nice, transparent finish. It works well with materials like ABS or PC underneath, which add strength. Just make sure the materials bond well so the parts don’t separate.
Yes, as long as you’re using FDA-approved food-grade PMMA. It’s non-toxic, has no smell, and can handle heat pretty well—so it’s great for things like food containers, cups, and kitchen tools that need to look good and stay safe.
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