Melt-blown yarn online plasma material surface modification device and method

Abstract

The invention relates to a melt-blown yarn online plasma material surface modification device. The device comprises a spinneret plate; a feeding plate is connected to the bottom of the spinneret plate; a side protruding part and a middle protruding part are arranged at the upper end of the spinneret plate; an air outlet is formed in the upper end of the middle protruding part; an air flow plate is arranged between the middle protruding part and the side protruding part; and a plasma discharge electrode structure is arranged at the contact part of the air flow plate and the middle protruding part. A plasma electrode structure is adopted for material surface modification, and a modifier is not needed, so that the environment friendliness is achieved; special performance materials are not needed, so that the investment is reduced; the plasma electrode structure is introduced into a melt-blowing process to improve the surface performance of a melt-blown yarn, improve the product performance, and solve the problem that the inner layer structure of a finished cloth roll cannot be treated; the device is simple in structure, easy to disassemble and assemble, convenient and fast, and electrode materials can be replaced; and a use method is simple, safe and efficient.

Description

technical field [0001] The invention belongs to the technical field of melt-blown nonwovens, and in particular relates to an online plasma material surface modification device and method for melt-blown filaments. Background technique [0002] Melt-blown nonwovens were first developed by the U.S. Navy in 1954. Through the air jet method, the fiber diameter can be controlled below 5 μm. Because the fiber diameter is small and soft, it is made into a nonwoven fabric. With the continuous development and improvement of technology, the application of melt-blown non-woven materials in filtration, waterproof, adsorption, anti-bacteria, warmth, medical and health care has increased. In recent years, new materials, new processes and new products of melt-blown nonwovens have emerged continuously, and the application fields have continued to expand. [0003] Chinese patent CN111334875A discloses an air deflector for a spinneret nozzle of a melt blown loom, comprising a melt feed plate...

AI Technical Summary

Problems solved by technology

[0003] Chinese patent CN111334875A discloses an air deflector for a spinneret nozzle of a melt blown loom, comprising a melt feed plate and a spinneret main body, the upper surface of the melt feed plate is provided with a melt channel; There are symmetrical gas jet plates on both sides of the protrusion on the upper part of the main body of the spinneret; the upper surface of the main body of the spinneret is provided with an air cavity, and a row of evenly distributed spinneret holes is arranged on the top of the protrusion; the gas jet There are air intake holes and diversion grooves on the board. The patent forms a guide flow through the diversion grooves to make the air jet flow more stable, so that the traction of the fused filament fibers is more stable and uniform in size, and the quality of the melt-blown non-woven fabric is improved; but In the process of using this invention, there are few melt flow channels, the processing process is slow, and there is no pretreatment and filtration process before spinning, and impurities may exist in the sprayed silk, and the quality is difficult to guarantee.

The special properties of the dielectric in the plasma device are also conducive to the generation of large-area uniform plasma; and electrons are required to have higher energy; electrons with lower energy can only input electrical energy through vibration loss, which cannot meet the reaction conditions of chemical reactions

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