Tailor's chalk and its making process
A technology of raw materials and content, applied in pencil leads, household utensils, applications, etc., can solve the problems of affecting product performance, difficult to color, rough appearance, etc., to achieve low cost increase, prevent drying and hardening, and easy raw materials. the effect
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Embodiment 1
[0013] In terms of weight percentage, PVA124 1.5%, sodium lauryl sulfate 1.0%, sodium carboxymethyl cellulose 0.3%, and water as the balance, mix them at room temperature, and heat and stir at a constant temperature of 90-95°C Dissolve it completely until it becomes a uniform colorless and transparent solution. After cooling to room temperature (about 22°C), soak the chalk in the solution, take it out after about 30 minutes, and dry it in the air at room temperature.
Embodiment 2
[0015] In terms of weight percentage, mix 1.5% PVA1788, 1.5% sodium dodecylsulfonate, 0.3% sodium carboxymethyl cellulose, and water at room temperature, and heat and stir at a constant temperature of 90-95°C Dissolve it completely until it becomes a uniform colorless and transparent solution. After cooling to 25°C, soak the chalk in the solution, take it out after about 30 minutes, and dry it in the air at room temperature.
Embodiment 3
[0017] In terms of weight percentage, mix 2.0% of PVA0588, 0.5% of sodium stearate, 0.2% of sodium carboxymethyl cellulose, and water at room temperature, and heat and stir at a constant temperature of 90 to 95°C to make it completely Dissolve until it becomes a uniform milky white transparent solution. After cooling to 30°C, soak the chalk powder in the solution, take it out after about 30 minutes, and dry it in the air at room temperature.
[0018] Comparing the coated chalk and uncoated chalk in the example, it is found that the former is still smooth and uniform in appearance, and hardly smells the smell emitted by the product, while the latter is rough in appearance and has a strong smell due to the sublimation of raw materials; After placing it for two months, it was found that the former was darker and smoother than the latter.
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