Method for recycling of old corrugated container using flotation and enzymatic hydrolysis
US6093282A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 25, 1999 |
| Grant date | Jul 25, 2000 |
| Priority date | — |
| Expiry date | Jun 25, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W30/64
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The present invention relates to a method for recycling of old corrugated container (OCC) using flotation, followed by selective enzymatic treatment to fines portion and by selective refining to long fiber stream, and more particularly, to a method for recycling of OCC, wherein OCC is treated with floatation and enzymatic hydrolysis and those recycled stock is refined, thereby having the following effects: PA1 a) The drainage property of base paper of old corrugated container is improved; and PA1 b) The strength of the same is enhanced by the refining treatment of the fractionated long fiber only; and PA1 c) The cost for disintegration and enzymatic treatment is reduced; and PA1 (d) The imported corrugated board and unbleached kraft pulp can be substituted by the Korean old corrugated container (KOCC).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.