Method for making black gypsum matrix

The preparation method of the black plaster matrix is as follows:

1, extraction of medicinal materials (stir-frying).

The oil temperature is 200-220℃. The degree of frying, the plants are fried to brown. Those with light foam on the back and bottom (flowers, grass, leaves and skins) are not resistant to frying, and other medicinal materials are added after frying until brown. Adding volatile components, mineral medicines and precious medicines, and then grinding and spreading (the temperature does not exceed 70℃).

2. refining.

The oil temperature is 300℃. The degree of refining is dripping into beads. The "old" plaster is crisp, with small adhesion and easy to fall off when applied. Too "tender" plaster is soft, easy to move after sticking, and has strong adhesion and is not easy to peel off.

3. Chardonnay becomes mushy (Youdan generates higher fatty acid lead salt).

The oil temperature in Xia Dan is 270℃. The saponification temperature of Youdan is 300℃. Oil: Dan = 500: 150 to 200 (less in winter and more in summer).

4. Go to "Fire Poison".

Immerse in water or dynamic running water. Fire poison: aldehydes, ketones, fatty acids, etc. These are irritating. Fire poison stimulation reaction: local stimulation occurs, ranging from erythema and itching to blisters and ulcers.

5. spread.

The gypsum block is melted in slow fire or water bath, kept at 60℃ to 70℃, mixed with fine materials, dipped in a specified amount of bamboo sticks, spread on the base material (leather, cloth and multi-layer bast paper), folded, packaged and stored in a cool place.

Brief introduction of gypsum matrix:

Plaster is divided into two parts, one is ointment and the other is medicine. The ointment and the medicine are combined together and smeared on the plaster cloth to make the plaster. Plaster, commonly known as plaster matrix, is the carrier of plaster traditional Chinese medicine, and also has sticky properties, which can make plaster stick to the skin surface of patients.

The components of plaster matrix are varied, and different plasters have different components of plaster matrix. Specifically, there are three kinds of plaster substrates: one is the traditional plaster substrate, which has a long production history and is mostly operated by hand. The preparation depends entirely on experience and family tradition, the second is solvent-based plaster matrix, the third is non-boiling plaster matrix, the fourth is cataplasm plaster matrix, and the fifth is new hot-melt pressure-sensitive adhesive plaster matrix.

Each gypsum matrix has its own advantages and disadvantages. However, with the development of society and technology and the appearance of new technology, the new gypsum matrix will always eliminate the old gypsum matrix, and the old gypsum matrix will have its own way of existence for the time being.