Multi-ply paper products having a first stratified base sheet and a second stratified base sheet
US12331463B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 29, 2023 |
| Grant date | Jun 17, 2025 |
| Priority date | — |
| Expiry date | Aug 29, 2043 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H27/38
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Multi-ply paper products and methods of making such products includes providing a first furnish including a primary pulp having papermaking fibers with a weight-weighted average fiber length, a coarseness of about sixteen milligrams per one hundred meters or lower, and being at least eighty percent of the papermaking fibers of the first furnish, forming a nascent web having at least two layers, one of the layers being a surface layer of the nascent web and formed from the first furnish, dewatering the nascent web to form a dewatered web, and drying the dewatered web to form a multi-ply paper product. The multi-ply paper product includes a first ply and a second ply arranged such that an inner layer of the first ply is adjacent to an inner layer of the second ply and the inner layer of the first ply is attached to the inner layer of the second ply.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.