Damp-proof film coating agent and salt film coating method

Abstract

The invention belongs to the technical field of film coating and discloses a damp-proof film coating agent. The damp-proof film coating agent comprises components in parts by mass as follows: a film forming agent and a solvent in a ratio being 1:(2-10), wherein the film forming agent is selected from one or more of stearic acid, beewax, collodion, ethyl cellulose and prolamine; the solvent is selected from one or more of ethanol, acetone, propane, ethyl ether and dimethyl ether. The preparation method of the damp-proof film coating agent comprises steps as follows: the raw materials in the formula ratio are taken, mixed and stirred until the film forming agent is dissolved completely, and the mixture is uniformly stirred. The invention further discloses a salt film coating method. The salt film coating method comprises steps as follows: the film coating agent and the solvent in the formula ratio in Claim1 are taken, mixed and stirred until the film forming agent is completely dissolved, the mixture is uniformly stirred, and a film coating solution is obtained; (2), salt and the prepared film coating solution are uniformly stirred, mixed and air-dried. The damp-proof film coating agent and the salt film coating method have good application prospect in the aspect of film coating damp-proof processing of low sodium salt and granules containing magnesium sulfate, potassium chloride, sodium chloride, calcium chloride and the like.

Description

technical field [0001] The invention belongs to the field of coating technology, and in particular relates to a moisture-proof coating agent and a salt coating method. Background technique [0002] The ideal salt intake for humans is 1.5-2.3g / d, and the excess sodium salt is excreted with urine. Eating too much salt can lead to a series of adverse physiological reactions, the most important of which is increased blood pressure. The more salt you eat, the higher your blood pressure. Excessive salt intake is a medical consensus that leads to high blood pressure. At present, in order to reduce salt intake, salty agents such as potassium chloride, magnesium sulfate, and magnesium chloride are usually used to replace 25-30% sodium chloride to produce low-sodium salt with a sodium chloride content of 70-75%. The United States defines low-sodium salt with a sodium chloride content of ≤30% as ultra-low-sodium salt. [0003] Magnesium chloride, magnesium sulfate, sodium chloride, p...

AI Technical Summary

Problems solved by technology

This coating moisture-proof method needs to increase the corresponding workshop, equipment, manpower and energy consumption, and it is not suitable for materials such as magnesium chloride and magnesium sulfate containing crystal water, because the crystal water of these materials can quickly absorb moisture and evaporate in large quantities at room temperature , deliquescent, affect the quality stability after the crystal water evaporates during the heating process