Melt-blown cloth mold with multi-row-hole spray head

Abstract

The invention relates to a melt-blown cloth mold with a multi-row-hole spray head. The melt-blown cloth mold comprises a feeding plate, a spinneret plate and an air adjusting plate, wherein the feeding plate is provided with feeding holes, a feeding runner and a material distributing groove which are sequentially communicated; the spinneret plate is internally provided with a material filtering groove, a material distributing cavity and needle mounting holes which are sequentially communicated; the material filtering groove is in butt joint with the material distributing groove; a spinneret needle is mounted in each needle mounting hole; an air conveying pipe connector, an air conveying channel, an air distribution groove and spinneret needle penetrating holes which are sequentially communicated are formed in the air adjusting plate; and an annular air channel surrounding each spinneret needle is formed between the outer side wall of the spinneret needle and the inner side wall of the corresponding spinneret needle penetrating hole. The melt-blown cloth mold with the multi-row-hole spray head has the beneficial effects that even if individual spinneret needles in the same row are blocked, leakage holes are avoided; a single spinneret needle can be replaced, so that the maintenance is convenient, and the cost is low; and the periphery of each spinneret needle is independently blown to perform filament drawing, so that filaments are discharged stably and uniformly.

Description

technical field [0001] The invention relates to the field of meltblown cloth molds, in particular to a meltblown cloth mold with multiple rows of nozzles. Background technique [0002] Melt-blown cloth is the core raw material of masks, and the difficulty in making high-quality melt-blown cloth lies in the design and production of melt-blown cloth molds. The design of the melt-blown cloth molds currently made in China is already an old process in the 1970s, and the efficiency of cloth production is low. Because it is a single row of hole spray material, it cannot be randomly superimposed, which has a great impact on the stability of the product. In addition, because the existing structure is monolithic, once some holes are blocked, the entire mold needs to be dismantled for maintenance, which takes a long time to repair. If one of the spinneret holes is broken, the entire mold needs to be scrapped, and the use cost is high. Moreover, the existing melt-blown cloth molds all ...

AI Technical Summary

Problems solved by technology

The design of the melt-blown cloth molds currently made in China is already the old technology of the 1970s, and the efficiency of the cloth is low. Because it is a single row of holes, it cannot be randomly superimposed, which has a great impact on the stability of the product.

In addition, because the existing structure is integral, once a single hole is blocked, the entire mold needs to be disassembled for maintenance, which takes a long time to repair. If one of the spinneret holes is broken, the entire mold needs to be scrapped, and the cost of use is high

Moreover, the existing melt-blown cloth molds all use air knives to discharge air, and the stability and uniformity of the filaments are poor.

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