Throat pipe type airflow drafting device for production of warm-keeping velvet materials

Abstract

The invention relates to the technical field of warm-keeping velvet material production, in particular to a throat pipe type airflow drafting device for production of warm-keeping velvet materials. The throat pipe type airflow drafting device comprises an airflow pipe and a drafting pipe; the airflow pipe is fixedly arranged outside a spinneret pipe in a sleeving mode; the drafting pipe is fixedly arranged at the lower end of the airflow pipe, and the drafting pipe communicates with the airflow pipe; the airflow pipe comprises an air inlet plate fixedly connected with the spinneret pipe; a pressurizing seat is fixedly mounted at the lower end of the air inlet plate; the drafting pipe comprises a throat pipe located at the top; a drafting sleeve is arranged at the lower end of the throat pipe; a central pipe is arranged in the drafting sleeve; and the lower end of the pressurizing seat is fixedly connected to the outside of the throat pipe in a sleeving manner. Compared with the prior art, the drafting device has the advantages that the fibers pulled out of spinneret orifices can be isolated by partition plates, so that the fibers are synchronously drafted and cannot be mutually entangled and interfered, forming and snapping of the fibers are greatly facilitated, and the product quality is improved.

Description

technical field [0001] The invention relates to the technical field of thermal fleece production, in particular to a throat type air drafter for thermal fleece production. Background technique [0002] Imitation down products (especially imitation goose down) have a potential market. The structure of imitation goose down fiber is made of PET as the down branch and PP as the down branch. The high-speed hot air evenly disperses the short PET fibers with a fineness of 15-50 μm into the air flow field of the melt blown equipment, so that PET and PP are bonded to form a goose down structure. [0003] At present, in the production process of the above-mentioned warm fleece, the air drafter is an important equipment in the production process. The tubular air drafter passes through the gap formed between the drafting cap and the central tube, driven by high-pressure air Negative pressure is used to draw the tow, and it is stretched and thinned under the hot air flow until it breaks...

AI Technical Summary

Problems solved by technology

[0003] At present, in the production process of the above-mentioned warm fleece, the air drafter is an important equipment in the production process. The tubular air drafter passes through the gap formed between the drafting cap and the central tube, driven by high-pressure air Negative pressure is used to draw the tow, and it is stretched and thinned under the hot air flow until it breaks, forming chaotically arranged superfine fibers, which fall on the surface of the single-layer fiber web on the conveying curtain of the melt blown equipment, forming a goose down imitation However, the inventor found in actual use that after the fibers are ejected from the porous spinneret, multiple fibers will easily entangle with each other when pulled out, making the fibers difficult to be broken. Or the entanglement of multiple fibers causes the fiber stem to be too large, and at the same time, there is insufficient drafting airflow strength, resulting in insufficient drafting force, which eventually leads to too large fiber stem, which seriously affects the thermal insulation effect of the warm fleece material and reduces product quality. , therefore, the present invention proposes a throat-type air drafter for the production of warm fleece that can solve the above-mentioned problems

Images