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Melacoll HPMC manufacturing process includes 9 steps: cotton opening, etherification, washing, drying, crushing, sieving, packaging, and after-sales service. As a HPMC manufacturer in china, MIKEM has its own HPMC factory and we can ensure HPMC quality and provide best price.
There are two main production processes based on the capacity of different manufacturers:
One is the one-step etherification method, the hydroxypropylation reaction and the methylation reaction are carried out simultaneously.
The other is the step-by-step etherification method, which means that the hydroxypropylation operation and the methylation operation are carried out separately,
1. To make a change from cotton-shaped to powder. This process is in our open cotton workshop.
2. Combine Methyl Chloride with Propylene Oxide to complete the etherification reaction.
We need important equipment in this process, that is a reactor with a strong agitating device. For the time being, in our plant, we have 12 horizontal reactors and 6 vertical reactors. And the annual capacity of our cellulose products is 40,000 tons per year.
3. Water washing,
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4. Drying,
5. Crushing,
6. Sieving. This is where we decide the fineness of the batch.
7. The last step in HPMC manufacturing process is the packaging. In this process, we have an automatic packaging machine. and with a professional UI desining teams, we also support customize trademarks! And then we deliver our goods to every corner of the world!
And where&#;s step 8?
Our after-sale service that will We promise that you will be able to find our responsible team to solve your difficulties in time when you have queries after the sale.
Hydroxypropyl Methylcellulose (HPMC) is a synthetic polymer widely used in a variety of industries, including pharmaceuticals, food, cosmetics, and construction. The manufacturing process for HPMC is complex and requires precise control of several factors.
The raw materials used in the manufacturing of HPMC are cellulose and propylene oxide. Cellulose is a natural polymer found in plant cell walls, while propylene oxide is a synthetic chemical used as a starting material in the production of HPMC. The cellulose used in the process is typically derived from wood pulp or cotton linters, while the propylene oxide is obtained from the petrochemical industry.
The Kemox HPMC manufacturing process involves two main chemical reactions: etherification and esterification. Etherification involves the reaction of cellulose with propylene oxide to produce Hydroxypropyl Methylcellulose (HPMC). This reaction is carried out under alkaline conditions and requires a catalyst such as sodium hydroxide. The resulting HPMC is then subjected to esterification, where it is reacted with methyl chloride to produce HPMC. This reaction also takes place under alkaline conditions and requires a catalyst such as methoxide.
Once the cellulose ether has been synthesized, it is typically processed into a powder form that can be easily transported and stored. The processing steps involved in this stage of the manufacturing process include drying, milling, and sieving. First, the HPMC is dried to remove any residual moisture. Next, it is milled to break up any large particles and ensure a consistent particle size. Finally, the milled HPMC is sieved to remove any remaining impurities and ensure a uniform particle size distribution.
Quality control is a critical aspect of the Kemox HPMC manufacturing process. During each stage of the process, samples are taken and tested to ensure that the product meets the necessary quality standards. Quality control tests may include viscosity, moisture content, particle size, and purity tests. The manufacturing process is continuously monitored and adjusted to ensure consistent product quality.
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