ptfe ultrafine filtration membrane production biaxial stretching equipment

Abstract

The invention relates to a biaxial stretching device for producing a PTFE ultra-fine filtration membrane, which comprises an expander and a winding mechanism arranged at the discharge end. The conveying chain conveying through the oven, the return end of the conveying chain is located outside the oven, and the outer side of the return end of the conveying chain is provided with a multi-section cooling box, each section of the cooling box is connected with a suction pipe, and the suction pipe is connected with a cooling fan. A secondary cooling box is arranged on the outer side of the process end of the conveying chain at the front end of the oven, and the front and rear sides of the secondary cooling box are provided with blowing pipes for blowing air against the conveying chain, and the blowing pipes are connected with a blower. In the invention, the return end of the conveying chain on the expander is arranged outside the drying oven, and then cooperates with the cooling box arranged at the return end of the conveying chain, so that the temperature of the conveying chain can be lowered by suction and the temperature of the conveying chain can be lowered, and the quality of product widening can be improved.

Description

technical field [0001] The invention belongs to the technical field of film production, and in particular relates to a biaxial stretching device for producing a PTFE ultrafine filtration membrane. Background technique [0002] PTFE ultra-fine filtration membrane is prepared by biaxial stretching method, and is mainly used in chips, semiconductors, electronics and other environments that require very clean. It belongs to a high-precision product, and its filtration accuracy can reach more than 99.9995% under the particle detection condition of 0.1um. In the production process of PTFE ultra-fine filter membrane, a widening machine is required to stretch the short PTFE filter membrane in the oven, thereby Made of PTFE ultra-fine filter membrane, but the current expander is to pass the chain between the two ends of the filter membrane into and out of the oven, which causes the chain to stay in the oven for a long time. After a long time, the temperature of the chain will be grea...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a kind of bidirectional stretching equipment for producing PTFE ultra-fine filter membrane, so as to solve the problem that the temperature of the current expander chain is too high, resulting in unqualified products, and the winding mechanism needs to be manually unfolded at both ends, which not only wastes manpower, but also Labor-intensive problems

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