METHOD FOR MANUFACTURING PULP FIBER RAW MATERIAL FOR FIBER COMPOSITE REINFORCING MATERIAL, PULP FIBER RAW MATERIAL FOR FIBER COMPOSITE REINFORCING MATERIAL, FIBER COMPOSITE REINFORCING MATERIAL, PELLET, FILM, FIBER, AND NONWOVEN TEXTILE

摘要

The purpose of the present disclosure is to provide a method for manufacturing a pulp fiber raw material with which it is possible to easily form a fiber composite reinforcing material that includes cellulose nanofibers with a low hemicellulose content. This manufacturing method is as follows.　A method for manufacturing, from pulp fibers to be processed, a pulp fiber raw material for a fiber composite reinforcing material that includes cellulose nanofibers, wherein the method is characterized by including a pulp fiber raw material formation step in which ozone-containing gas is supplied to a processing liquid including the pulp fibers to be processed, whereby the pulp fiber raw material having a hemicellulose content of less than 8.0 mass% is formed from the pulp fibers to be processed.