Title:
不織ウェブのフォーム製法への遠心ポンプの使用
Document Type and Number:
Japanese Patent JP3841441
Kind Code:
B2
Abstract:
A non-woven web of fibrous material is produced using a moving foraminous element in the practice of the foam process. A first foam slurry of air, water, fibers and a surfactant is generated and centrifugally pumped into contact with the moving foraminous element. Substantially fiber-free foam is withdrawn from the foraminous element while forming a non-woven web of fibrous material on the foraminous element, and at least a part of the substantially fiber-free foam is used in the generation of the first foam slurry. Recycling is also typically practiced using a centrifugal pump, and the centrifugal pumps are preferably degassing pumps which remove some of the gas from the foam. By practicing the invention it is possible to produce fibrous webs using the foam process that are more than two meters wide, and at a forming speed of more than about 100 m/min (e.g. about 200-500 m/min).
Inventors:
Eronen, Jorma
Janson, Juhany
Koso, Alto
Rocman, Kai
Janson, Juhany
Koso, Alto
Rocman, Kai
Application Number:
JP52737298A
Publication Date:
November 01, 2006
Filing Date:
December 18, 1997
Export Citation:
Assignee:
Ahlstrom Grassfibble Salmon Yukiture
International Classes:
D04H1/70; B01D19/00; D21F11/00
Domestic Patent References:
| JP55009119B1 | ||||
| JP7107398B2 | ||||
| JP6086903A |
Attorney, Agent or Firm:
Hideto Asamura
Hajime Asamura
Sadafumi Kobori
Yukihiro Ikeda
Hajime Asamura
Sadafumi Kobori
Yukihiro Ikeda