PMMA (Acrylic) Injection Molding Services On Aria
At MadeAria, we specialize in PMMA (Acrylic) Injection Molding, delivering high-quality, transparent, and durable components for a wide range of industries.
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What is PMMA (Acrylic)?
PMMA, also known as acrylic or plexiglass, is a versatile material prized for its optical clarity, weather resistance, and excellent mechanical properties.
Whether you need intricate parts for medical devices, automotive components, or consumer products, our advanced injection molding capabilities ensure precision and consistency in every piece.
Our PMMA Injection Molding Process
Material Selection
We use high-grade PMMA resins to ensure optimal clarity, strength, and performance.
Mold Design
Our team designs custom molds tailored to your part’s specifications, ensuring precision and efficiency.
Injection Molding
Utilizing state-of-the-art machinery, we produce parts with tight tolerances and consistent quality.
Post-Processing
Additional finishing options, such as polishing, coating, or assembly, are available to meet your needs.
Quality Control
Every part undergoes rigorous inspection to ensure it meets our high standards and your requirements.
Description
Full Name
Acrylic
Process
Finishing options
Mold texturing，Pad printing，Laser engraving，Bead Blasting
Rockwell Hardness (R)
71-102
Prices
$$
Features
Appearance
Tansparent
Strengths
High Impact Resistance, Lightweight
Tensile Strength
9,400 psi
Elongation at Break
2–10%
Density
1.18–1.20 g/cm³
Advantages of PMMA (Acrylic) Injection Molding
Optical Clarity
PMMA offers exceptional transparency, making it an ideal choice for applications requiring clear or translucent parts.
Durability
With high impact resistance and UV stability, PMMA parts are built to last, even in harsh environments.
Lightweight
Acrylic is lighter than glass, making it a preferred material for applications where weight is a concern.
Versatility
PMMA can be easily colored, polished, or coated to meet specific design requirements.
Cost-Effective
Compared to glass, PMMA is more affordable while offering similar or superior performance.
Applications of PMMA Injection Molding
PMMA (Acrylic) Injection Molding Material Properties
PMMA (Acrylic) Plastic Properties
Value
Tensile Strength (Yield) （MPa）
70
Flexural Modulus（GPa）
2.96 - 3.30
Impact Resistance (Izod Impact, Notched)
0.999 - 3.81 ft-lb/in²
Maximum Service Temperature（℃）
90 - 150
Chemical Formula
(C5O2H8)n
Glass Transition Temperature（℃）
108 - 110
Heat Deflection Temperature（℃）
98
Drying Temperature（℃）
80
Drying Time（hr）
3
Mold Temperature（℃）
60～90
Melt Temperature（℃）
215～240
Injection Pressure（MPa）
100～170
Injection Speed（ mm/sec）
Low
Cooling Time（S）
20～30
Scrap Quantity（mm）
2～6
Back Pressure（MPa）
1３～2８
Clamping Force（ton/in2）
4
Return Speed (rpm)
60～80
Shrinkage
0.2-0.8%
PMMA (Acrylic) Injection Molding Design Guide
Wall Thickness
- Optimal Range: 1.5–4 mm (0.06–0.16 inches).
- Uniformity: Maintain consistent wall thickness to avoid warping, sink marks, or uneven cooling.
- Thin Sections: Avoid extremely thin walls (<1 mm) to prevent flow issues and brittleness.
Draft Angles
- Recommended: 1–2° per side for smooth surfaces, 2–3° for textured surfaces.
- Purpose: Draft angles facilitate easy ejection from the mold and reduce surface defects.
Radii and Corners
- Sharp Corners: Avoid sharp corners to reduce stress concentrations and improve flow.
- Recommended Radii: Minimum 0.5 mm (0.02 inches) for internal corners, larger radii for external corners.
Ribs and Bosses
- Ribs: Use ribs to strengthen parts without increasing wall thickness. Keep rib thickness ≤60% of the adjacent wall.
- Bosses: Design bosses with adequate draft and reinforcement to prevent cracking during assembly.
Gates and Runners
- Gate Type: Use edge, tab, or submarine gates for PMMA to minimize visible marks and ensure smooth flow.
- Runner Design: Use full-round runners to reduce pressure loss and improve material flow.
- Gate Location: Place gates in areas where cosmetic appearance is less critical to avoid flow lines or weld marks.
Shrinkage and Tolerances
- Shrinkage Rate: PMMA typically shrinks 0.2–0.6% during cooling. Account for this in mold design.
- Tolerances: Standard tolerances are ±0.1 mm (±0.004 inches) for small parts. Tighter tolerances may require special considerations.
Cooling and Ejection
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