Cell casting

<p>Cell casting is a method used for creating <a href="/facts/Poly(methyl_methacrylate)/CnCRBo5F">poly(methyl methacrylate)</a> (PMMA) sheets. Liquid <a href="/facts/Monomer/Gw3CltMb">monomer</a> is poured between two flat sheets of <a href="/facts/Toughened_glass/I2Q7fX7n">toughened glass</a> sealed with a <a href="/facts/Rubber/CbsjJxhY">rubber</a> <a href="/facts/Gasket/gQ3bnuPK">gasket</a> and heated for <a href="/facts/Polymerization/1hmBz7Ur">polymerization</a>. Because the glass sheets may contain surface scratches or sag during the process, this traditional method has some disadvantages: among other problems, the PMMA sheets may contain variations in thickness and surface defects. For many applications it has since been replaced by other methods for making PMMA such as <a href="/facts/Extrusion/wM2kJ6wc">extrusion</a>, which gives uniform surface features. However, for applications where strength is critical cell casting techniques are still employed in conjunction with stretching, which produces a stronger overall material.
</p><p>"Cell Casting - A process in which a casting liquid is poured between two plates, usually glass, that have a gasket between them to form a cell to contain the casting liquid; then the resin solidifies, usually through polymerization or crosslinking." - A. Brent Strong
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Cell casting open-in-new

Cell casting