A method for mass production of plastic mesh fabric with stable target airflow value for respiratory masks

Abstract

The invention discloses a method for manufacturing plastic mesh fabric with a stabilized target airflow value for a breathing mask in batches. The method comprises the following steps: (1) manufacturing a belt-shaped plastic mesh fabric belt, and dividing the plastic mesh fabric belt into n plastic mesh fabric blocks Pn with the same area; (2) measuring the airflow passage amount Qn of area regions A in each plastic mesh fabric block Pn; (3) calculating the reserved area An of the area regions A in each plastic mesh fabric block Pn in sequence; (4) performing melting plugging on mesh holes in the area regions A besides the reserved area An in each plastic mesh fabric block Pn; (5) cutting the plastic mesh fabric belt to obtain finished products. According to the method, the airflow passage amount is adjusted by adjusting the ventilation area of the plastic mesh fabric, so that the airflow passage amount of each piece of plastic mesh fabric can be stabilized within a very small range, so that the high-yield batch production of the products becomes possible; meanwhile, the cost of the products is reduced; the quality of the products is improved.

Description

technical field [0001] The invention relates to a method for manufacturing a plastic mesh fabric, in particular to a method for manufacturing a plastic mesh fabric for a breathing mask. Background technique [0002] Plastic mesh fabric is used in a new type of low-noise breathing mask, which replaces the porous structure of traditional breathing masks and greatly reduces the noise generated by breathing. Due to the requirements of respiratory function, the plastic mesh fabric in the breathing mask usually requires that the air flow rate can be maintained within a small fluctuation range, which puts forward higher requirements for the processing and production of the plastic mesh fabric. [0003] Due to the limitations of the existing plastic mesh fabric weaving technology, the size and uniformity of the mesh holes in different regions of the plastic mesh fabric cannot be guaranteed. Therefore, even if two pieces of plastic mesh fabrics have the same area and size, the airfl...

AI Technical Summary

Problems solved by technology

For plastic mesh fabrics with different airflow throughput, different degrees of calendering are used to make the airflow throughput tend to be uniform. The improvement effect of this method is still limited by the weaving technology. The plastic mesh fabric woven by the same process passes through different areas. The amount varies greatly

The plastic mesh fabric calendered by equal thickness calendering technology still has the problem of great difference in air flow rate in different areas. In addition, the current calendering technology cannot realize real-time variable thickness calendering.

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