Sun glasses lenses made from nylon, CR39 and PC materials have their own advantages and disadvantages. Nylon is a synthetic polymer that is lightweight, durable and flexible. It has a high resistance to impact and can withstand extreme temperatures. Nylon lenses are easy to produce using a molding process and are widely available in a range of colors and tints.
CR39 is a type of plastic that is known for its clarity and scratch resistance. These lenses are lightweight, durable and relatively inexpensive compared to other materials. They are made using a casting process that allows for a high level of precision and quality control. CR39 lenses are also easy to tint and are available in a range of colors and shades.
PC (polycarbonate) is a type of thermoplastic that is known for its impact resistance and durability. These lenses are lightweight and are often used in sport and safety glasses. They are made using an injection molding process that allows for a high level of precision and consistency. PC lenses are also available in a range of colors and tints, but they are not as scratch resistant as CR39 lenses.
In terms of their advantages, nylon lenses are flexible, durable and resistant to impact. CR39 lenses are clear and scratch-resistant. PC lenses are impact-resistant and durable.
However, there are also some disadvantages to consider. Nylon lenses can be more prone to yellowing and discoloration over time. CR39 lenses can be less impact-resistant compared to other materials. PC lenses may not be as clear as CR39 lenses and are more prone to scratching.
In conclusion, the choice of material for sun glasses lenses will depend on the intended use and personal preferences. Nylon lenses are ideal for those who require flexibility and durability, CR39 lenses are suitable for those who prioritize clarity and scratch resistance, and PC lenses are ideal for those who require impact resistance and durability.
Post time: Feb-21-2023