High Transparency, Low Cost. Polymethyl Methacrylate (PMMA), often known as Acrylic, serves a vital role in the global eyewear market.
While not suited for high-impact sports or complex prescription optics, Acrylic is the undisputed king of the volume market. It offers exceptional optical clarity (higher light transmission than Polycarbonate) at a fraction of the cost. For promotional sunglasses, over-the-counter (OTC) reading glasses, and brand-new frame "demo lenses," PMMA provides the perfect balance of visual appeal and economic efficiency.
-------------- Cost-Effective Clarity ---------------
Don't let the low price tag fool you. PMMA is scientifically renowned for its transmission properties.
-------------- Key Applications ---------------
Acrylic is the backbone of three specific eyewear sectors where cost and volume are the primary drivers.
-------------- Limitations & Considerations ---------------
While excellent for budget applications, PMMA has specific physical properties that must be respected during manufacturing.
Acrylic is rigid and brittle. It cannot be used for drill-mount (rimless) frames as it will crack immediately. It is best for full-rim plastic or metal frames.
PMMA is sensitive to alcohol and certain solvents. Cleaning agents must be chosen carefully to avoid clouding (crazing) the surface.
Raw acrylic scratches easily. Jings Eyewear recommends applying a basic Hard Coating (HC) even for budget lines to extend shelf life and user value.
| Attribute | Acrylic (PMMA) | Polycarbonate (PC) |
|---|---|---|
| Cost | Lowest ($) | Moderate ($$) |
| Impact Resistance | Low (Brittle) | Excellent |
| Refractive Index | 1.49 | 1.59 |
| Optical Clarity | High (Clearer) | Lower |
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