H.D.Plastics is a leading plastic extrusion manufacturer and exporter for custom extruded Acrylic (PMMA)Lighting diffuser and other lighting lampshade extrusion parts. We provide full design support and ensure quality and consistency by building all extrusion and extrusion dies in our in-house tooling facility.

Recently we export a big profile Acrylic (PMMA)Lighting diffuser with high lighting transmissivity required. Here is the product photo for reference.

PMMA lighting diffuser

Custom choose the acrylic diffuser because it is highly superior mechanical features.

Here is the technical report for the material we used.


Properties Test Method Test Condition Unit CM-205
Tensile Strength ASTM D638 1/8”, 6 mm/min Kg/cm2(lb/in2) 720(10200)
Tensile Elongation ASTM D638 1/8”, 6 mm/min % 5.0
Flexural Strength ASTM D790 1/4”, 2.8 mm/min Kg/cm2(lb/in2) 1100(15600)
Light Transmission ASTM D1003 1/8” % 92
Izod Impact Strength ASTM D256 1/4”, 23℃ Kg-cm/cm(ft-lb/in) 2.0(0.37)

Melt Flow Index

ASTM D1238 230℃,3.8Kg g/10min 1.8
Hardness ASTM D785 1/4” M Scale 97
Specific Gravity ASTM D792 23℃ 1.19
Vicat Softening Temp ASTM D1525 1/8”, 50℃/hr ℃(℉) 113(235)
Heat Distortion Temp ASTM D648 1/4”, 120℃/hr ℃(℉) 100(212)
Flammability UL 94 1/16”HB
Yellow Index ASTM D1003 1/8” 0.5 max
Haze ASTM D1003 1/8” 0.5 max

Acrylic Lighting diffuser with its own unique features

1. High transparency. PMMA extruded lens is considered to be the best polymer transparent material. Since the light transmittance reaches 92%, which is higher than that of glass.

2. High mechanical strength. The relative molecular content of PMMA extruded lenses is about 2 million. It is a long-chain polymer compound with soft molecular forming chains. Therefore, PMMA extruded lenses have higher strength, and their resistance to stretching and impact is better than ordinary material.

3. Lightweight. The density of the PMMA extruded lens is 1.18kg / dm3, it is just half of the ordinary glass and 43% of metal aluminum (attributable to light metals).

4. Easy to process. PMMA extruded lenses can not only be cut with a lathe, drilled with a drill, and can be bonded into various shapes.