Invention Grant
US09506202B2 Furnish pretreatment to improve paper strength aid performance in papermaking
有权
提供预处理以提高造纸中纸张强度的帮助性能
- Patent Title: Furnish pretreatment to improve paper strength aid performance in papermaking
- Patent Title (中): 提供预处理以提高造纸中纸张强度的帮助性能
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Application No.: US14537055Application Date: 2014-11-10
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Publication No.: US09506202B2Publication Date: 2016-11-29
- Inventor: Yulin Zhao , Jun Li , Qing Long Rao , Weiguo Cheng
- Applicant: NALCO COMPANY
- Applicant Address: US IL Naperville
- Assignee: NALCO Company
- Current Assignee: NALCO Company
- Current Assignee Address: US IL Naperville
- Agency: Brinks Gilson & Lione
- Agent Eric D. Babych
- Priority: CN201110382058 20111125
- Main IPC: D21H21/20
- IPC: D21H21/20 ; D21H17/37 ; D21H17/44 ; D21C5/02 ; D21H17/28 ; D21H17/00 ; D21H21/18 ; D21H11/14 ; D21H23/14 ; D21H17/45

Abstract:
The invention is directed towards methods, compositions, and apparatus for increasing the strength of paper made out of a furnish having a large proportion of OCC. The method involves the following steps: 1) Providing a paper furnish having a large amount of OCC in it, 2) adding strength promoter to the furnish prior to adding a strength agent to the furnish, 3) adding a strength agent to the furnish, and 4) making a paper product from the furnish. This method allows cheap OCC material to be used in a papermaking process without the quality problems that the anionic trash in OCC typically causes. Thus paper products having low costs and high quality can be produced.
Public/Granted literature
- US20150059998A1 FURNISH PRETREATMENT TO IMPROVE PAPER STRENGTH AID PERFORMANCE IN PAPERMAKING Public/Granted day:2015-03-05
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