Disposable wipers and towels containing 40% or more post-consumer waste
US8282777B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 30, 2009 |
| Grant date | Oct 9, 2012 |
| Priority date | — |
| Expiry date | May 17, 2030 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H17/37
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A high utility (strong in both dry and wet states, highly absorbent, abrasion resistant, thick, and soft) disposable wiper or towel that contains 40% or more cellulose fibers from post-consumer waste and/or in excess of 50% pre and/or post consumer waste. The base sheet is produced in a wet-pressed, creped process and is post-treated using a DRC process. The final wiper or towel is a double re-creped, non-woven sheet having a first side and a second side. The non-woven sheet includes about 85% to about 90% by weight of-cellulose fibers. The cellulose fibers include about 40% to about 80% of cellulose fibers from post-consumer waste. The non-woven sheet includes at least about 10% to about 15% by weight of binder. The wiper meets EPA guidelines related to the level of PCW in wipers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.