Title:
【発明の名称】ティッシュペーパウェブ成形方法
Document Type and Number:
Japanese Patent JP2977282
Kind Code:
B2
Abstract:
A tissue web (W), which has improved formation and improved tensile properties but no appreciable deterioration of retention and layer purity, if applicable, in comparison with tissue webs produced in conventional twin wire tissue formers, may be formed in a roll type twin wire former by draining 90-99%, preferably 98-99%, of all drainable water from the slurry while on the forming roll (1), preferably a suction forming roll, the remaining 1-10%, preferably 1-2%, of the drainable water being sufficient to have a substantial amount of the papermaking fibers free in the slurry during an initial phase of a subsequent step, and, downstream of said forming roll (1), draining said remaining 1-10%, preferably 1-2%, from the slurry while vibrating the slurry sufficiently to create a micro-turbulence causing a small scale agitation of the fibers to prevent them from forming any appreciable fibrous web (W) on the two forming fabrics (3; 4) until the water remaining in the slurry is insufficient for allowing the fibers to substantially change their position relative to one another. The vibration frequency is at least 100 Hz, and the vibrations may be provided by a multiblade hydrofoil (7).
Inventors:
ERIKUSON YAN AA
KUREERERIDO INGUARU BEE EE
RARUSON YAN ERU
KUREERERIDO INGUARU BEE EE
RARUSON YAN ERU
Application Number:
JP50053095A
Publication Date:
November 15, 1999
Filing Date:
May 18, 1994
Export Citation:
Assignee:
BARUMETO KARURUSUTATSUDO AB
International Classes:
D21F1/00; D21F9/00; D21F9/02; D21F11/00; D21F11/14; (IPC1-7): D21F9/02
Domestic Patent References:
| JP63165595A | ||||
| JP6235185A | ||||
| JP45682B1 |
Attorney, Agent or Firm:
Minoru Nakamura (6 outside)