Method of manufacturing pulp fiber raw material for fiber composite reinforcing material, pulp fiber raw material for fiber composite reinforcing material, fiber composite reinforcing material, pellets, film, fiber, non-woven fabric

摘要

An object of the present disclosure is to provide a method for producing a pulp fiber raw material having a low hemicellulose content and capable of easily forming a fiber composite reinforcing material containing cellulose nanofibers. The manufacturing method of the present disclosure is as follows. A method for producing a pulp fiber raw material for a fiber composite reinforcing material containing cellulose nanofibers from pulp fibers to be treated, which is described above by supplying an ozone-containing gas to the treatment liquid containing the pulp fibers to be treated. A method comprising a pulp fiber raw material forming step of forming the pulp fiber raw material having a hemicellulose content of less than 8.0% by mass from the pulp fiber to be treated.