Plexiglass Acrylic Sheet - UV Filtering
Plexiglass sheet in Ultra Violet formulations reduces damaging UV light waves.
NOTES ON ULTRAVIOLET LIGHT TRANSMISSION & FILTERING
Within the Ultraviolet Spectrum, Ultraviolet UVB (short wavelength high frequency) & UVA (long wavelength low frequency) are the spectrum of UV light of most concern to us. Referencing the table below, general purpose acrylic naturally filters all UV light below 345nm-(100% UVB), but only 35% of UVA light. Simliarly, ordinary window glass passes about 90% of the light above 350 nm, but blocks over 90% of the light below 300 nm. Many applications, such as document, artifact, and artwork preservation call for a material which absorbs ultraviolet light in its most damaging range from 285 to 400nm.
Many pigments and dyes absorb UV and change color, so paintings and textiles may need extra protection both from sunlight and fluorescent bulbs, two common sources of UV radiation. Old and antique paintings such as watercolor paintings, for example, usually must be placed away from direct sunlight. These factors are why many museums place black curtains over watercolor paintings and ancient textiles because watercolors can have very low pigment levels and need extra protection from UV light.
UV FILTERING ACRYLIC SHEET OP3
Acrylite® UV filtering (OP-3) acrylic sheet offers protection from the irreversible effects of UV damage. It protects from both natural and artificial light. Acrylite® UV filtering (OP-3) is a continuously manufactured acrylic sheet which filters out 98 percent of damaging UV rays, protecting paper-borne artwork, prints and documents from fading, yellowing and brittling. OP-3 acrylic sheet is light weight, has superior impact resistance and is an ideal choice for framing articles of value. The UV filtering properties are not an exterior coating, but inherent properties of the resin-and therefore will not wear off or degrade.
UV FILTERING MUSEUM GRADE ACRYLIC SHEET OP2/UF-3
UV Filtering OP-2 Acrylite®/UF-3 Plexiglas® acrylic cell cast sheet is the clear choice for museum vitrines. Easily fabricated, edges can be cut and cemented for strong nearly invisible joints. It can be thermoformed, cold-formed, screen printed and painted. This product is also available with an abrasion and chemical resistant coating upon request.ePlastics stocks UV Filtering plexiglass in 1/8" and 1/4" thickness for protecting fine art and building custom museum vitrines.
UV FILTERING NON-GLARE PLEXIGLASS/ACRYLIC SHEET OP3 P99
Acrylite® Non-Glare P99 UV filtering acrylic sheet is manufactured to minimize glare and reflection and maximize viewing of artwork and other articles of value. This special matte finish can show off artwork from almost any angle under typical lighting conditions. Non-Glare UV filtering P99 acrylic holds the same absorbing properties as the OP-3 UV filtering sheet, but adds an anti-glare capacity.
UV TRANSMITTING ACRYLIC SHEET OP4*(special order)
Acrylite® OP4 UV Transmitting acrylic sheet is manufactured for use in indoor sun tanning equipment. It offers high levels of UV light transmission and strong resistance to degradation caused by UV light. OP-4 acrylic sheet transmits a high percentage of light in the UV-A 315 – 400 nm and UV-B 280 – 315 nm regions. Only a small portion of light in the UV-C region (200 – 280 nm) is transmitted.
Thickness tolerances are plus/minus 10% on acrylic sheet. Thickness can vary throughout the sheet. Normally we see plus/minus 5% or less differences. Use this list as a guide converting fractions to what is actually produced industry-wide.
1/8" = .118" = 3mm
3/16" = .177" = 4.5mm
1/4" = .236" = 6mm