Method for making a sheet of degradable paper, use of said sheet for making a mandrel defining a roll carrier, degradable paper sheet, and mandrel including at least one of said sheets
US9034478B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 16, 2009 |
| Grant date | May 19, 2015 |
| Priority date | — |
| Expiry date | Oct 24, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31986
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A method for making a water-degradable paper sheet involves the following: providing at least one strip of a water-soluble binding material in the form of a dry film; providing at least two strips each made of at least one ply of cellulose wadding; placing the strip of water-soluble binding material between the two strips of cellulose wadding; humidifying, assembling and pressing the three strips; and drying the complex strip thus obtained. The sheet thus obtained can be used for making a roll carrier mandrel by helically winding one or more strips from the sheet about a cylinder. Articles produced from the sheet can particularly be used in the field of products for sanitary or domestic use.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.