Moulding Process
First Claim
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1. A method of producing a plurality of soft contact lenses comprising the steps of:
- A. providing a sheet of solid, substantially dry material;
B. forming said material into a plurality of shaped lens blanks through controlled application of physical force to the material;
C. hydrating said plurality of shaped lens blanks;
wherein at least immediately subsequently to said physical forming step B, said plurality of shaped lens blanks remain at least partially attached to the sheet of material.
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Accused Products
Abstract
A highly effective and cost-effective method and apparatus for manufacturing soft contact lenses by physically forming the lenses form sheet (or other solid) material in a batch or continuous process.
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Citations
43 Claims
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1. A method of producing a plurality of soft contact lenses comprising the steps of:
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A. providing a sheet of solid, substantially dry material; B. forming said material into a plurality of shaped lens blanks through controlled application of physical force to the material; C. hydrating said plurality of shaped lens blanks; wherein at least immediately subsequently to said physical forming step B, said plurality of shaped lens blanks remain at least partially attached to the sheet of material. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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28. An apparatus for producing a plurality of soft contact lenses comprising:
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a forming means for applying a controlled physical force to a sheet of material in order to form a plurality of shaped lens blanks; sheet material transport means for transporting a sheet of material. - View Dependent Claims (29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43)
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Specification