High-efficiency filter sheets for air microfiltration membrane filters

Abstract

The present invention relates to a high-efficiency filter sheet for air microfiltration membrane filters. The high-efficiency filter sheet comprises a polyvinyl chloride fiber layer and a polytetrafluoroethylene fiber layer, wherein fiber filaments in the polyvinyl chloride fiber layer and the polytetrafluoroethylene fiber layer are respectively in a unidirectional arrangement, and an included angle between the fiber filaments in the polyvinyl chloride fiber layer and the fiber filaments in the polytetrafluoroethylene fiber layer is 60-65 DEG. According to the high-efficiency filter sheet, a double layer combination of the polyvinyl chloride fiber layer and the polytetrafluoroethylene fiber layer is used, and a specific angle between the fiber filaments is set, so that windage resistance and filtering effect of the filter sheet are improved; the introduced polytetrafluoroethylene fiber layer has superhigh mechanical strength and structural toughness, so that vibration caused by strongwind can be effectively suppressed, and airflow in a dust collection chamber of a vacuum cleaner is stabilized; and a filling layer is additively arranged, so that the filtering effect of the filter sheet is further improved.

Description

technical field [0001] The invention relates to a filter sheet, in particular to a high-efficiency filter sheet for an air microfiltration membrane filter. Background technique [0002] To achieve a clean room level, there must be comprehensive measures, including process layout, building layout, building structure, building decoration, personnel and material purification, air cleaning measures, maintenance management, etc. Among them, air cleaning measures are the fundamental guarantee for achieving the clean level. As far as clean air is concerned, there are mainly the following specific measures: [0003] (1) The air supply to the clean room must be air with a high degree of cleanliness. Therefore, high-efficiency or sub-high-efficiency filters (when the cleanliness level is low) must be selected as the terminal filter to perform the final stage of filtration on the air entering the clean room. In order to protect the terminal filter and prolong its life, the air must ...

AI Technical Summary

Problems solved by technology

[0007] The filter material is a very important high-frequency component in the air filter, but the filter sheets for the air filter currently in the market are prone to clogging after being used for a period of time, resulting in poor exhaust air of the vacuum cleaner and causing motor temperature Or, some filters have barely qualified air exhaust effect, but the filter effect on dust is not good, causing fine dust to pass through the filter and be discharged from the vacuum cleaner under the action of strong wind, thus damaging the indoor environment. The environment causes secondary pollution, which affects the cleanliness of the clean room and seriously affects the respiratory health of the human body

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