Production process of short fibers special for high-cleanness spunlace non-woven fabric

Abstract

The invention relates to a production process of short fibers special for high-cleanness spunlace non-woven fabric. The production process comprises the steps of PTA feeding, slurry preparation, firstesterification, second esterification, pre-polycondensation, final polycondensation, spinning, tow gathering, curling, cutting, metering and packaging. Through the methods that various feeding modesare adopted, the adding mode of a catalyst is changed, process wastewater is subjected to pre-cooling treatment, a filter is adopted for automatic cleaning, an oil inlet of an oiling ring is improved,a tail filament alarm treatment device is arranged, a tow amplitude modulation device is adopted, a rotary standby cut-off mechanism is adopted, and a novel adjustable packaging briquetting method isadopted, the main problems in the production process of the short fibers special for the high-cleanness spunlace non-woven fabric at present are solved, and the production process of the short fibersspecial for the high-cleanness spunlace non-woven fabric is high in production efficiency, stable in product quality, flexible and controllable in production process, low in failure rate and low in production cost.

Description

technical field [0001] The invention relates to a production process of high-clean spunlace non-woven special short fiber, which belongs to the technical field of polyester short fiber production. Background technique [0002] Spunlace non-woven fabric is an important non-woven fabric processing technology product. Due to the unique technology of spunlace method, it is widely used in the fields of medical and health products, synthetic leather base cloth, shirts, and home decoration. Polyester staple fiber for high-clean spunlace non-woven fabric is the trade name of polyester staple fiber specially used in spunlace non-woven fabric for food hygiene and medical materials. [0003] The existing short fiber production process for high-clean spunlace nonwovens mainly has the following problems: [0004] 1. The problem of feeding process: the existing raw material PTA for the production of short fiber polyester melt mostly adopts the method of manual hoisting and feeding, and t...

AI Technical Summary

Problems solved by technology

[0004] 1. The problem of feeding process: the existing raw material PTA for the production of short fiber polyester melt mostly adopts the method of manual hoisting and feeding, and the packaging and transportation method of PTA raw materials is not only the traditional big bag packaging, but also lower cost and more efficient. Container transportation and canned transportation, so a single manual feeding method is costly and inefficient, and there are certain safety hazards, which cannot be applied to multiple raw material transportation methods (container and canned);

[0005] 2. The problem of catalyst addition process: Catalyst is one of the key processes to determine the variety of short fiber. When multiple short fiber processing production lines produce different types of short fiber products, different types of catalysts and corresponding additions are required. The existing process is in The addition of catalysts in the public slurry preparation tank cannot satisfy multiple short fiber production lines to produce different types of short fibers at the same time;

[0006] 3. The problem of process wastewater treatment: the temperature of process wastewater is high, and the high-temperature wastewater is directly discharged to the process wastewater treatment tower, which reduces the process wastewater treatment efficiency and increases the treatment cost;

[0007] 4. Cleaning of the filter element: The filter element after the polycondensation process needs to be cleaned before recycling. The existing automatic cleaning device (patent number: 200910183012.1) can only clean the filter element of the same length, and it needs to be disassembled when replacing the filter element. Remove the support tube, gear box and filter element to rotate the reducer, the process of replacing the filter element is cumbersome, and the cleaning efficiency is low; the filter elements of different lengths still need to be cleaned manually, and one filter element needs to be cleaned manually for more than 1 hour, the labor intensity of the workers is high, and the cleaning efficiency is low. Poor cleaning effect;

[0008] 5. Spinning oiling problem: The oil film is unevenly distributed in the oiling ring, resulting in uneven quality of the spun silk, more weak yarns, high unevenness, and easy breakage and fluffing in the subsequent production process. problems, which seriously affect the production rhythm and product quality;

[0009] 6. The problem of tail silk processing: in the process of spinning and trimming, tow stiffness will be generated, and there will be relatively hard agglomerates at the end of the whole tow. These stiffness or agglomerations are collectively called tail silk. When the continuous production reaches the tail, due to the lack of timely and effective alarm processing method, the hard block of tail silk enters the subsequent production equipment, causing equipment failure and shutdown; and once the tail silk is mixed into the finished product package, the product quality will decline;

[0010] 7. The problem of uneven wire width of the crimping machine: when the tow enters the crimping machine for crimping, due to the fluctuation of the width of the tow, the thickness of the tow on both sides of the crimping roller is uneven, some are too thick and some are too thin, resulting in the crimping process If it is not normal, it will easily cause the crimping machine to fail and stop;

[0011] 8. Spinning and cutting problem: when changing the blade of the cutting machine, it needs to be shut down, which affects the production rhythm, and the alarm cannot be handled when the blade breaks abnormally;

[0012] 9. Handling of abnormal packages: Abnormal packages caused by reasons such as unqualified weight and improper packaging during the production process need to wait for the production gap before processing. The processing process is more complicated. If the processing is not timely and involves many When there are abnormal packages of different varieties of products, it is also easy to cause quality accidents such as mixed varieties;

[0013] 10. Packaging problem: only 6 packing belts can be fixed, and the packing position cannot be adjusted, which cannot be applied to the situation that different varieties require different packing tape quantities and different packing positions; there is also the problem of oil pollution of the packing machine during the packing process

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