Preparation method of cold-formed soap

Abstract

The invention relates to a preparation method of a cold-formed soap. The method has simple process steps, and substitutes traditional aqueous solution of sodium hydroxide with sodium hydroxide or a dispersion of sodium hydroxide and glycerol; sodium hydroxide is completely soluble in glycerol but disperses in glycerol, so as to avoid fast reaction after mixing of sodium hydroxide solution with oil too, reduce the initial reaction rate of saponification, and effectively control saponification reaction rate; along with the saponification reaction, the reaction product of glycerol continuously increases to help more fully dispersion of sodium hydroxide, accelerate the reaction rate of sodium hydroxide and the remaining oil. Since the method employs an anhydrous formula, water evaporation process is not needed after soap formation by liquid soap, and the production cycle is significantly shortened; and the nutrition substances are added in solid form powder to effectively prevent the contact reaction of non-alkali-resistant nutrients and alkali hydroxide molecules, so as to retain the active nutrient ingredients in the soap and give full play to the role of skin care of the nutrients.

Description

technical field [0001] The invention relates to the technical field of preparation of handmade soap, in particular to a preparation method of cold handmade soap. Background technique [0002] In the prior art, the manufacturing process of handmade soap is generally divided into the following categories: [0003] 1) Melting and remanufacturing method, that is, the industrial soap base is heated and melted, mixed with additives, and then injected into molds together to make soaps of various shapes quickly and easily; the washing effect of handmade soap made by this process is basically the same as that of commercially available soaps No difference, no outstanding advantages; [0004] 2) Regenerative soap making method, which is to cut the made soap into small pieces or shreds, add appropriate amount of water to heat, and then re-mould it into a soap of a specific shape; this process is currently less used, and the handmade soap is not well formed , and the washing effect wil...

AI Technical Summary

Problems solved by technology

[0003] 1) Melting and remanufacturing method, that is, the industrial soap base is heated and melted, mixed with additives, and then injected into molds together to make soaps of various shapes quickly and easily; the washing effect of handmade soap made by this process is basically the same as that of commercially available soaps No difference, no outstanding advantages;

[0004] 2) Regenerative soap making method, which is to cut the made soap into small pieces or shreds, add appropriate amount of water to heat, and then re-mould it into a soap of a specific shape; this process is currently less used, and the handmade soap is not well formed , and the washing effect will decrease;

[0006] 4) Cold process, which is the oldest soap-making method for human beings. It is to add sodium hydroxide solution to oil at room temperature to undergo saponification reaction to form sodium fatty acid and glycerin, and to obtain fine and rich foam with super cleansing power Cold-processed soap with moisturizing effect, cold-processed handmade soap can be completely decomposed by the natural environment, and will not cause the burden and pollution of the soil environment; at the same time, due to the low reaction temperature, the maximum retention of oil and various natural additives Nutrients; however, this process requires high reaction control, and the saponification reaction speed is too fast, which may cause the soap liquid to solidify before entering the mold; and because it needs enough time for the oil to fully react with the remaining sodium hydroxide, it is generally produced The cycle is longer, not less than January;

[0007] 5) Thermal method, this method is to increase the saponification reaction temperature on the basis of the cold method, although the production cycle can be shortened, it will affect the fineness of the soap body, and it is easy to cause the loss of nutrients in the raw materials

[0014] 1) Saponification reaction speed is difficult to control

The concentration and temperature of lye, reaction speed, and the ratio of alkali to oil will all affect the speed of saponification reaction. If the reaction speed is too fast, it will affect the soap liquid entering the mold. Handmade soap must require soap liquid to enter the mold. If it solidifies before entering the mold, lead to preparation failure;

[0015] 2) Long production cycle

After the soap liquid is put into the mould, it takes more than one month for the lye to react completely, and at the same time, the water in the soap liquid evaporates, which leads to a long production cycle of cold handmade soap and greatly increases the production cost;

[0016] 3) It is difficult to preserve the beneficial ingredients of nutrients

In a lye environment, water will quickly dissolve water-soluble additives, and nutrients such as milk, fruit juice, hydrosol, chlorophyll, etc. that are not resistant to alkali will react with alkali to cause their beneficial ingredients to fail

In response to this problem, the Chinese invention patent "A Handmade Cold Soap and Its Preparation Method" (Application No.: 201310157112.3) with the authorized announcement number CN103224848B proposes a method, which first uses polymer materials for substances that are not resistant to alkali Wrapped, and then added in the late stage of saponification reaction, this method reduces the destructive effect of lye on alkali-resistant nutrients to a certain extent, but the dispersion effect of nutrients will decrease after being wrapped, and carbohydrates, proteins Some natural polymer materials such as lipids and lipids themselves will also react with alkali, resulting in the gradual weakening of this encapsulation during the curing process, and there is still the possibility that nutrients will fail to react with alkali

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