Patent ID: 11970588
Assignee: nan
Field: Basic materials chemistry (Chemistry)
Classification: CPC C  B  Y | IPC B  C

Claim 0:
1. A press-sealing method of anionic polysaccharide films, comprising:
(1) preparation of chitosan quaternary ammonium salt solution: adding 0.5-1.5 g of chitosan quaternary ammonium salt into 100 ml distilled water and stirring at a room temperature until the chitosan quaternary ammonium salt is completely dissolved to obtain a chitosan quaternary ammonium salt solution;
(2) pretreating an anionic polysaccharide film in an environment under a temperature of 20-30° C. and a humidity of 43%-75% RH for 6-12 h;
(3) applying the chitosan quaternary ammonium salt solution to a part to be sealed between two anionic polysaccharide films, and pressing the part be sealed for 1-2 s under conditions of a pressure of 0.3-0.5 MPa and a temperature of 20-30° C., so as to complete the press-sealing of the anionic polysaccharide films.