Wet crepe throughdry process for making absorbent sheet and novel fibrous product
US6752907B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 9, 2002 |
| Grant date | Jun 22, 2004 |
| Priority date | — |
| Expiry date | Mar 25, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24455
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An improved process for making sheet from a fibrous furnish includes: depositing the furnish on a foraminous support; compactively dewatering the furnish to form a nascent web; drying the web on a heated cylinder; creping the web therefrom and throughdrying the web to a finished product. The microstructure of the web is controlled so as to facilitate throughdrying. The product exhibits a characteristic throughdrying coefficient of from 4 to 10 when the airflow through the sheet is characterized by a Reynolds Number of less than about 1. The novel products of the invention are characterized by wet springback ratio, hydraulic diameter and an internal bond strength parameter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.