Patent ID: 7704436
Filing Date: 2010-04-27
Classification: A45D,B29C,C08K

Abstract:
1. A method for producing a cosmetic applicator from a foam, comprising the steps of: injecting sodium silicofluoride and air into a rubber latex while agitating the mixture at high speed to produce a stock solution for latex foam production, wherein the solution is formulated to be solidified in around two to three minutes at 29±2° C., wherein the sodium silicofluoride is the only gelling agent used in the solution; outputting the solution into an open-top belt with a closed bottom, and adjusting its thickness using a squeezee, said belt having mold release property; irradiating the solution with microwaves and continuing the irradiation exclusively for solidifying the solution to obtain a solidified foam, wherein the irradiation starts within 70 seconds of the start of the outputting step, and wherein the solution is kept at 40° C. or less while irradiating the solution with microwaves; vulcanizing the solidified foam by heat, thereby forming a vulcanized foam which has (i) a bubble fineness corresponding to 9 bubbles/mm forming a cosmetic applicator using the vulcanized foam.