What Do you Need to Know about Cast Moulding Technology?

 The process of engineering by carving liquid or flexible raw substances via a mold or matrix is referred as moulding. It has been designed with the help of a pattern or model of the final object. But casting means the whole manufacturing process in which molten metal is immunised or discharged into a mold to become an object of a desired shape. Cast moulding technology has promoted the production of several life-changing things such as- cast molding contact lenses.

 

Casting has the following benefits over other manufacturing processes.

  • It can form any complicated structure economically.
  • The dimensions of an object don’t matter for casting.
  • The casting objects have high compressive strength.
  • All structure composed by casting has a wide array of properties.
  • This can produce an accurate object.

This invention equips with an approach for cast-molding hydrogel contact lenses, peculiarly silicone hydrogel contact lenses by including plastic casts of a poly (cycloalkylene-dialkylene terephthalate) copolymer. These plastic molds do not demand to be degassed and kept in an oxygen-free atmosphere (e.g., N2 or Ar) before utilizing them for cast-molding silicone hydrogel contact lenses in the absence of oxygen and subsequent silicone hydrogel lenses can still reflect high ion relatively penetrability and temperately less variation in targeted optical power, when associated with silicone hydrogel lenses produced by utilizing a regular mold material, such as polypropylene. The invention also offer plastic molds for cast-molding silicone hydrogel contact lenses

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