Patent ID: 8425824

Claim:
A process for producing a hollow-fiber membrane filter element, comprising: a step of injecting a mixture of a two-liquid mixing type curable resin produced by; mixing constituents of the two-liquid mixing type curable resin, wherein the constituents are fed into a mixing channel in which two or more static mixers are arranged in series, a non-stirring portion having no mixing element is disposed between at least one of the static mixers and another one of the static mixers placed downstream thereof, and a total volume of the non-stirring portion is from 2 to 10 times as much as a total volume of mixing portions of the static mixers, and wherein each static mixer comprises a cylindrical frame containing mixing units, each made of a plurality of elements connected to each other in the longitudinal direction and each having a shape conforming to a shape obtained by twisting a plate-like body in the circumferential direction along the longitudinal direction and any tow elements adjacent to each other are twisted in mutually opposite directions so that the liquids to be mixed move while being inverted, into an end portion of a hollow-fiber membrane bundle composed of a plurality of hollow-fiber membranes and solidifying the mixture, thereby bonding and fixing the end portion of the hollow-fiber membrane bundle.