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公开(公告)号：US10765194B2
公开(公告)日：2020-09-08
申请号：US15773761
申请日：2016-10-27
发明人： Ji Seon Jeong , Ju Hee Shin , Sung Hwan Bang , Ju Young Jung , Kil Seuk Byun , Kyong Min Lee
IPC分类号： A45D44/00 , A45D44/22 , A61K8/02 , A61K9/70 , C08J3/075 , C08J5/18 , A45D37/00 , A61Q19/00 , A61K9/00 , A61L15/60 , A61L15/28 , A61K8/73 , A61L26/00
摘要： The present invention relates to a method of preparing a dry hydrogel sheet including the steps of: preparing a cellulose ether dispersion solution; transferring the dispersion solution to a coater while maintaining the temperature of the dispersion solution in the range of a gelation temperature of the dispersion solution to a boiling point of a dispersion medium; applying the dispersion solution transferred to the coater as a sheet; preparing a hydrogel sheet by cooling the applied dispersion solution to induce gelation; and drying the hydrogel sheet. Since the dry hydrogel sheet prepared by the method has a low moisture content, it is possible to ensure the stability of active ingredients, quantify functional components to be applied to the dry hydrogel sheet, and ensure the uniformity of the surface appearance and thickness of the dry hydrogel sheet, which results in the improvement of the quality of a final product.
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公开(公告)号：US20180325244A1
公开(公告)日：2018-11-15
申请号：US15773761
申请日：2016-10-27
发明人： Ji Seon Jeong , Ju Hee Shin , Sung Hwan Bang , Ju Young Jung , Kil Seuk Byun , Kyong Min Lee
CPC分类号： A45D44/002 , A45D37/00 , A45D44/22 , A45D2200/1027 , A45D2200/1036 , A61K8/0212 , A61K8/731 , A61K9/0014 , A61K9/7007 , A61K9/7046 , A61L15/28 , A61L15/60 , A61L26/0023 , A61L26/008 , A61Q19/00 , C08J3/075 , C08J5/18 , C08J2301/28 , C08L1/26
摘要： The present invention relates to a method of preparing a dry hydrogel sheet including the steps of: preparing a cellulose ether dispersion solution; transferring the dispersion solution to a coater while maintaining the temperature of the dispersion solution in the range of a gelation temperature of the dispersion solution to a boiling point of a dispersion medium; applying the dispersion solution transferred to the coater as a sheet; preparing a hydrogel sheet by cooling the applied dispersion solution to induce gelation; and drying the hydrogel sheet. Since the dry hydrogel sheet prepared by the method has a low moisture content, it is possible to ensure the stability of active ingredients, quantify functional components to be applied to the dry hydrogel sheet, and ensure the uniformity of the surface appearance and thickness of the dry hydrogel sheet, which results in the improvement of the quality of a final product.
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