Steam heating and spray humidifying device used before tow curling and pretreatment process

Abstract

The invention provides a steam heating and spray humidifying device used before tow curling and a pretreatment process. The steam heating and spray humidifying device comprises a steam box used for conducting preliminary heating on tows; a porous partition plate is arranged in the steam box; a plurality of steam nozzles are installed on the porous partition plate, and the steam nozzles are connected with a steam generator through steam pipes; a spraying box body used for spraying and humidifying tows is arranged behind the steam box; atomizing nozzles are symmetrically arranged at the tow inlet end of the spraying box body; an air inlet pipe and a water inlet pipe are connected to the atomizing nozzles at the same time; and the air inlet pipe is connected with a high-pressure air supply device and a constant-temperature water supply device. According to the device, pretreatment before tow curling is achieved in the mode that the steam heating technological process and the spraying humidifying technological process are combined, the tow performance and the elastic modulus are effectively improved, the process can be suitable for research and development of high-single-fiber low-total-denier tows, the strength, the curling number, the curling performance and the appearance of the tows are the same as those of conventional products, and the requirements of customers are met.

Description

technical field [0001] The invention belongs to the field of chemical fiber spinning equipment, in particular to a steam heating and spray humidifying device and a pretreatment process before the tow is crimped. Background technique [0002] The crimping process usually used in the dry spinning process is relatively simple, and the oiled ribbon is sent to the crimping machine to complete the process route. For some tow specifications with a large crimp modulus, this simple method is not appropriate, so The crimp is unstable, the rebound is large, the crimp wave is not strong enough, the specific surface area of ​​the tow is not large enough, the appearance of the ribbon is poor, and the crimp can not meet the process requirements. In response to the above problems, our company also discloses CN108411516A, a pretreatment device for cellulose acetate curling, a pretreatment liquid and a pretreatment method. In this technical solution, the spraying device is used as a pretreatm...

AI Technical Summary

Problems solved by technology

[0002] The crimping process usually used in the dry spinning process is relatively simple, and the oiled ribbon is sent to the crimping machine to complete the process route. For some tow specifications with a large crimp modulus, this simple method is not appropriate, so The crimp is unstable, the rebound is large, the crimp wave is not strong enough, the specific surface area of ​​the tow is not large enough, the appearance of the ribbon is poor, and the crimp can not meet the process requirements

In response to the above problems, our company also discloses CN108411516A, a pretreatment device for cellulose acetate curling, a pretreatment liquid and a pretreatment method. In this technical solution, the spraying device is used as a pretreatment process before curling, and the above process is improved to a certain extent. The subsequent curling performance of the tow is guaranteed, but the acetone remaining on the tow cannot be removed during the pre-spinning process, and the elastic modulus of the tow cannot be guaranteed

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