Method for producing hollow fiber membrane modules

Abstract

The present invention provides a method for manufacturing a hollow fiber membrane module. When the end of the hollow fiber membrane assembly is cut and opened using a guillotine cutter, it can form a hollow fiber membrane module that is perpendicular to the length direction of the hollow fiber membrane and has no gaps. Good cut surface for burrs etc. The present invention relates to a method for manufacturing a hollow fiber membrane module in which the ends of two or more hollow fiber membranes are integrated with a fixing resin using a cutting device having a guillotine cutter to form a hollow fiber membrane assembly. When the end of each hollow fiber membrane is cut and the end of each hollow fiber membrane is opened, the end of the hollow fiber membrane assembly is supported from below using a support sheet with a bending elastic modulus of 1 GPa or more and a thickness of 1 to 5 mm. The end portion is cut off together with the support sheet.

Description

technical field [0001] The present invention relates to a method of manufacturing a hollow fiber membrane module used for water treatment and the like. [0002] This application claims priority based on Japanese Patent Application No. 2011-102024 for which it applied in Japan on April 28, 2011, and uses the content here. Background technique [0003] As a hollow fiber membrane module used in the manufacture of sterile water, drinking water, highly pure water, etc., there is known a hollow fiber membrane module in which a water collection case is provided at the ends of a plurality of hollow fiber membranes (e.g. Refer to Patent Document 1). [0004] Such a hollow fiber membrane module can be produced by, for example, the following method. First, a plurality of hollow fiber membranes are gathered, and the ends are placed in a container. Next, by pouring the fixing resin into the container and curing it, the ends of the hollow fiber membranes are fixed and integrated to for...

AI Technical Summary

Problems solved by technology

[0009] However, when the end is cut by this method, the cut surface may not be a vertical plane but inclined with respect to the longitudinal direction of the hollow fiber membrane, that is, there is no right angle accuracy.

In addition, cracks or burrs of the fixing resin sometimes occur on the cut surface

[0010] If the cut surface is inclined or there are gaps or burrs in the fixing resin, an unnecessary gap will be formed after the hollow fiber membrane bundle is inserted into the frame, and the bonding resin will flow into the opened end of the hollow fiber membrane through the gap. side, the hollow fiber membrane may be clogged, etc.

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