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US 7,678,321 B2Granted
Clear and resilient artificial fingernail tip
AssigneeOPI Products, Inc.
InventorsSunil J. Sirdesai, George Schaeffer
Life of this patent
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Abstract
A method for making clear and resilient artificial fingernail tips which can be applied to the forward edge of the natural fingernail using a mixture of copolymer pellets which form a plastic phase and terpolymer pellets which form a rubber phase; drying the pellets, melting the pellets, injecting the molten material into a mold to form the desired artificial fingernail tips.
Claims17
A method of making an artificial fingernail tip comprising:
- melting a material comprising a mixture of copolymer pellets and copolymer grafted on terpolymer pellets, the copolymer pellets comprising methyl methacrylate-ethyl acrylate and the terpolymer pellets comprising butyl acrylate-butadiene-methyl methacrylate backbone with methyl methacrylate-ethyl acrylate grafts;
- and
- molding the melted material to have a shape of the artificial fingernail tip,
- wherein the artificial fingernail has a refractive index substantially the same as a refractive index of a cyanoacrylate glue, and
- wherein the artificial fingernail tip is transparent.
2 more elements
A method of making artificial fingernail tips comprising:
- a) obtaining a mixture of about 700o copolymer pellets and about 30% copolymer grafted on terpolymer pellets, the copolymer pellets comprising methyl methacrylate-ethyl acrylate and the terpolymer pellets comprising butyl acrylate-butadiene-methyl methacrylate backbone with methyl methacrylate-ethyl acrylate grafts;
- b) drying the copolymer and copolymer grafted on terpolymer pellets by baking at a temperature of approximately 175-185 deg. F. for about 3-4 hours;
- c) melting the dried pellets at a temperature between approximately 410 and 470 deg. F. to form a melted material;
- d) injecting the melted material into a mold at a pressure between approximately 10000 and 20000 psi;
- e) maintaining a molding temperature of approximately 104-158 deg. F. and mold surfaces at approximately 120-140 deg. F. for approximately eight seconds;
- f) maintaining the material at a temperature of approximately 98 deg. F. for approximately 3.2 seconds until the material hardens;
- g) removing the hardened material forming the artificial fingernail tips,
- wherein the hardened material has a refractive index substantially the same as an about 1.45 refractive index of a cyanoacrylate glue such that fogging would not occur if the cyanoacrylate glue were applied to the hardened material.
5 more elements
A method of making an artificial fingernail tip comprising:
- drying a material including baking the material to remove moisture from the material;
- melting the dried material, the material comprising a mixture of about 70% copolymer pellets and about 30% copolymer grafted on terpolymer pellets, the copolymer pellets comprising methyl methacrylate-ethyl acrylate and the terpolymer pellets comprising butyl acrylate-butadiene-methyl methacrylate backbone with methyl methacrylate-ethyl acrylate grafts;
- molding the melted material into a shape of an artificial fingernail tip;
- wherein the artificial fingernail tip has a refractive index such that fogging would not occur if a cyanoacrylate glue were applied to the artificial fingernail tip, and wherein the artificial fingernail tip is transparent.
1 more element
Dependencies are inferred from the claim text.