The most commonly used plastics
in eyeglass frames are cellulose acetate, Kevlar, nylon, cellulose propionate
and Optyl. cellulose acetate comes in a wide variety of colors textures and
patterns but tends to get brittle with age while cellulose propionate is light
weight material that is ideal for intricate designs , overheating will shrink
and ruin this material . Kevlar plastics are limited used in cool glasses frames because it will
not shrink and it comes in few colors. Nylon plastics are unbreakable so these
are mainly used for sports and safety glasses, can be manufactured only in dark
colors and become brittle overtime. Optyl material is lightweight than
cellulose acetate and is hypo allergic, an advantage to skin allergic.
Composites
of these materials also used like carbon fiber graphite provide the endurance
of metal frames and Copolyamide is a blend nylon manufactured for frame injection
molding. A material Flexon7 is also available made from titanium based alloy
that enable a twisted frame to its original shape. The most desirable material
for manufacturing frames is titanium which is non corrosive and fifty percent
lighter than most of metal frame material used in cool glasses. For more information please visit Monoqool.com.
