Invention Grant
- Patent Title: Process for making absorbent towel and soft sanitary tissue paper webs
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Application No.: US16587102Application Date: 2019-09-30
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Publication No.: US10731295B2Publication Date: 2020-08-04
- Inventor: Tobias Ziegenbein
- Applicant: Mercer International Inc.
- Applicant Address: CA Vancouver
- Assignee: Mercer International Inc
- Current Assignee: Mercer International Inc
- Current Assignee Address: CA Vancouver
- Agency: Stephen T. Murphy Law LLC
- Agent Peter D. Meyer; Stephen T. Murphy
- Main IPC: D21F11/14
- IPC: D21F11/14 ; D21H15/10 ; D21H13/02 ; D21H27/00 ; D21H17/59 ; D21H21/20 ; D21H21/06 ; D21H11/12

Abstract:
A process for making an absorbent towel paper web is provided. The process steps include a) providing a papermaking furnish, b) forming a differential density wet fibrous web from the paper making furnish; and, c) drying the differential density wet fibrous web until fibrous web contains not more than about 10% by weight moisture to form the absorbent towel paper web. Step a) provides the steps of providing: i) from about 20.1% to about 99.9% by weight of a softwood pulp fiber mixture and, ii) from greater than 0% to about 79.9% by weight of a hardwood pulp fiber mixture. Step i) further provides the steps of providing u) from about 20% to about 99.8% by weight of softwood pulp fiber, v) from about 0.05% to about 20% by weight of cellulose nano-filaments, and, w) from about 0.05% to about 5.0% by weight of strengthening additive.
Public/Granted literature
- US20200024803A1 PROCESS FOR MAKING ABSORBENT TOWEL AND SOFT SANITARY TISSUE PAPER WEBS Public/Granted day:2020-01-23
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