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What causes trachoma in molten spray
Date: 2020-07-03 Source: Xuanpin
Due to the epidemic, many domestic enterprises choose to cross the boundary into the melting spray mold and melting spray industry, but "every other line is like a mountain", doing well in the original industry, but the production of melting spray is frequently frustrated, encounter problems at a loss. In particular, the production of melting spray cloth trachoma, crystal, so that melting spray cloth manufacturers are very headache. Today xiaobian here a brief analysis of melting spray cloth trachoma how to return a responsibility, and the solution, I hope to help you in the melting spray process.
It is particularly important to control the production process of melting spraying cloth. The production parameter ratio will directly determine the quality of melting spraying cloth. If you want to reach the standard of the melting spraying cloth filtration level, the melting spraying technology, equipment, melting spraying die head, mixing machine technicians are all indispensable.
Trachoma, in fact, is the "crystal point", especially put on the glass to touch the whole cloth, there will be a feeling of stabbing hands. The main process factors that produce "crystal point" phenomenon include:
1. Improper setting of working temperature (too high or too low, generally too high is easy to occur);
2. After the die head is used, the die tip is dirty (sometimes the local poor silk production or large area appears, the die tip can be solved with a scraper);
3. There are carbonized substances or dirty plugging around the die tip, which may cause defective wire production (usually caused by abnormal shutdown). Generally a small amount of local, you can use a scraper die tip to solve);
4. Local viscera or physical damage of the wind knife (affecting the uniformity of normal spinning airflow, local appearance accompanied by the appearance of longitudinal thin groove);
5. The output is too high or too low (generally in a large area, reduce or increase the output to solve);
6. Melting point of raw materials is too high or too low (usually too high and easy to appear); Raw material or masterbatch is too dirty (general cloth whole, or large area appears); There is water in the raw material.
Melting spray cloth trachoma, crystal point, generally the most effective way is the scraper, through the melting spray die clean, clean air knife. The difficulty is to dredge the spinneret hole, through the hole, the risk is also high. There are also small particles that drip down from a leak somewhere in the spinnaster. It could be other oil stains. Then from the process to adjust, reduce the die head temperature, reduce the hot air temperature, reduce the drafting strength, the general role is not good, it is necessary to remove the plate, replace the spinneret. When replacing the spinneret, cleanliness is required and the die head should be released.
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