Airflow guide plate for spinneret of melt-blown loom

Abstract

The invention discloses an airflow guide plate for a spinneret of a melt-blown loom. The airflow guide plate comprises a melt feeding plate and a spinneret plate body, wherein the bottom of the spinneret plate body is connected with the melt feeding plate; a melt flow channel is formed in the upper surface of the melt feeding plate; and the melt flow channel communicates with an inner cavity of the spinneret plate body to form a molten mass channel. The airflow guide plate is characterized in that symmetrical air jet plates are arranged on the two sides of a protrusion on the upper portion ofthe spinneret plate body; an air cavity is formed in the upper surface of the spinneret plate body, and a row of spinneret orifices which are evenly distributed are formed in the top end of the protrusion; air inlet holes and guide grooves are formed in the air jet plates, the air inlet holes communicate with the air cavity, form guide flow through the guide grooves and form symmetrical high-speedair flow with a certain included angle with the spinneret orifices. According to the airflow guide plate, air jet is more stable, so that the traction of melt fibers is more stable, the size is uniform, and the quality of melt-blown non-woven fabric is improved.

Description

technical field [0001] The invention relates to an airflow deflector for a spinneret nozzle of a meltblown loom. Background technique [0002] The melt-blown cloth filter material is made of polypropylene superfine fibers randomly distributed and bonded together. The appearance is white, flat and soft. The material fiber fineness is 0.5-1.0 μm. The random distribution of fibers provides more thermal bonding between fibers. Opportunity, so that the melt-blown gas filter material has a larger specific surface area and higher porosity (≥75%); after high-pressure electret filtration efficiency, the product has the characteristics of low resistance, high efficiency, and high dust holding capacity. [0003] Melt-blown cloth uses high-speed hot air flow to draw the thin stream of polymer melt extruded from the spinneret hole of the die head; the products currently on the market use small holes to divide the flow and then enter the air cavity, and the jet flow channel is a narrow ga...

AI Technical Summary

Problems solved by technology

[0003] Melt-blown cloth uses high-speed hot air flow to draw the thin stream of polymer melt extruded from the spinneret hole of the die head; the products currently on the market use small holes to divide the flow and then enter the air cavity, and the jet flow channel is a narrow gap to exit the air There is no guide tooth design of the present invention; and due to the uneven distribution of air flow, the fiber grinding nozzle direction of the melt-blown cloth will be unevenly distributed, and the finished product level of the cloth is limited, thereby forming ultra-fine fibers and collecting them on the condensation net curtain or drum At the same time, it is self-adhesive and becomes a melt-blown nonwoven fabric; the quality of the spinneret assembly directly determines the product performance of the melt-blown nonwoven fabric

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