About Acrylic Glass

 

About: Acrylic glass

Acrylic glass is the collective name for Polymethylmethacrylat (PMMA).
PMMA is a transparent thermoplastic. Chemically, it is the synthetic polymer of methyl methacrylate.
It was developed in 1933 by Dr. Otto Röhm and it is sold under the tradename Plexiglas® (in the US Acrylite®)

Properties

In general, acrylic glass is characterized by good resistance to chemicals. It is resistant at room temperature to most inorganic chemicals, to aliphatic hydrocarbons, cycloaliphatic compounds, fats and oils, and, at temperatures up to 60 degrees Celsius also resistant to dilute acids as well as dilute and concentrated solutions of most alkalis.

However, acrylic glass is attacked by chlorinated hydrocarbons, ketones, esters, ethers, alcohols and aromatic compounds.

Manufacturing

Acrylic glass is manufactured by two different processes: casting (GS) and extrusion ( XT). The technical data and properties of both product groups are comparable in many ways.
The extrusion process is cheaper. Problems may occur with extrusion rods which are cut and treated with heat. They might show fissures, cracks or optical disturbances.

Therefore I only use casted PLEXIGLAS® (GS) rods for my Marwel Roller.

Care & Cleaning

Plastics normally become statically charged and attract dust as a result. Dirt can hardly cling to the smooth surfaces ofacrylic glass. Dust is removed with water and some dishwashing liquid, using a soft, non-linting cloth or sponge. Never wipe dry and use only non-scouring agents for more intensive cleaning. To remove more obstinate and especially greasy stains from acrylic glass, petroleum ether or benzine may be used.