What is the primary material used for making plastic frames, commonly referred to as Zyl or Zylonite?

The primary material used for making plastic frames, commonly referred to as Zyl or Zylonite, is cellulose acetate. This material is highly valued in the eyewear industry because of its favorable qualities, such as versatility, lightweight nature, and comfort. Cellulose acetate is derived from natural sources, providing a good balance of flexibility and strength, making it ideal for creating stylish and durable frames. Its ability to be easily shaped and colored allows for a wide range of designs and aesthetic finishes in eyewear.

In contrast, while cellulose propionate is another type of plastic that can be used in frame manufacturing, it does not have the same widespread recognition as Zyl for plastic frames. Optyl, made from epoxy resin, is recognized for its light weight and durability but is not synonymous with Zyl. Polycarbonate is known for its impact resistance and is commonly used in lenses rather than frames. Each of these materials has its own applications, but when specifically referencing Zylonite frames, cellulose acetate is the correct answer.