公开(公告)号：US10422079B2

公开(公告)日：2019-09-24

申请号：US15119517

申请日：2015-02-05

Applicant: ECOLAB USA INC.

Inventor： Wenli Tu ,  Yumei Lu ,  Zhi Chen ,  Yulin Zhao

IPC: D21H17/28 ,  D21B1/32 ,  D21H11/14 ,  D21H21/36 ,  D21C5/02

Abstract: The present invention provides a method for preserving recycled fiber by using biocides and a method for manufacturing paper using recycled fiber. The method for manufacturing paper, using recycled fiber as a raw material, comprises pulping procedure: pulping the raw material containing recycled fiber, and papermaking procedure: producing the paper with the pulp slurry obtained in the pulping procedure; wherein the total starch content of recycled fiber is measured before recycled fiber is pulped, and when the total starch content of recycled fiber is higher than a predetermined value, one or more biocides are added during the pulping procedure.