Method for producing cosmetic solid powder
AssigneeShanghai Zhenchun Cosmetics Co., Ltd.
InventorsSili Zeng, Xiaohua Cui, Lijuan Cheng
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Abstract
A method for producing a solid powder includes the following steps: (1) mixing the powders to obtain a material A, in which the powders include a flaky filler, a spherical filler, and a pigment; and mixing a natural polysaccharide with water, then adding an emollient moisturizer and an emulsifier to obtain a material B; (2) mixing the material A and the material B, and then adding a preservative to obtain a dispersion; (3) filling the dispersion into a mold; (4) freezing the dispersion to a preset low temperature, and then demolding to obtain a semi-finished product; and (5) drying the semi-finished product to obtain a finished product in a lyophilizer.
Claims20
A method for producing a solid powder, comprising the following steps:
- (1) mixing a powder phase uniformly to obtain a material A;
- and mixing a natural polysaccharide with a suitable amount of water uniformly, then adding an emollient moisturizer and an emulsifier, and then mixing uniformly, to obtain a material B, wherein the powder phase comprises a flaky filler, a spherical filler, and a pigment;
- (2) mixing the material A and the material B uniformly, and then adding a preservative to obtain a dispersion;
- (3) filling the dispersion into a mold;
- (4) freezing the dispersion to a preset low temperature, and then demolding to obtain a semi-finished product;
- and (5) drying the semi-finished product to obtain a finished product wherein lyophilization is adopted, which comprises:
- placing the semi-finished product in a lyophilizer, and continuously freezing at a low temperature, wherein the temperature in the lyophilizer is lower than the eutectic point;
- then evacuating, and sublimation drying by properly heating after the vacuum level reaches a preset vacuum value, to remove the ice crystal;
- and finally desorption drying after sublimation, to remove the bound water.
Dependencies are inferred from the claim text.