MULTILAYERED SOLUBLE SOLID PRODUCT AND ITS MANUFACTURING METHOD Russian patent published in 2022 - IPC C08J9/00 A61K8/00 A61Q19/00 C11D17/06 C11D3/37 C11D1/83 

FIELD: composite materials.

SUBSTANCE: present invention relates to soluble solid products containing a set of layers of flexible soluble porous sheets and to their manufacturing method. A multilayered soluble solid product is described, which contains two or more flexible soluble porous sheets, each of these two or more sheets is characterized by a percentage content of open cells from about 80% to about 100% and a total average pore size from about 100 mcm to about 2000 mcm, and it contains water-soluble polymer, and at least two adjacent sheets in such a soluble solid product are characterized by an adhesion indicator (AdS) of at least 1, and contacting surfaces of the specified at least two adjacent sheets do not essentially contain adhesives.

EFFECT: creation of a multilayered structure with an increased dissolution rate and sufficient adhesion strength between flexible and soluble layers, which does not essentially contain adhesives.

15 cl, 3 ex, 14 tbl, 7 dwg