Title:
METHOD AND DEVICE FOR COLLECTING BASE PAPER FOR GYPSUM PLASTER BOARD
Document Type and Number:
WIPO Patent Application WO/2005/061133
Kind Code:
A1
Abstract:
A method of collecting a base paper for a gypsum plaster board for continuously and efficiently collecting the base paper for the gypsum plaster board from gypsum plaster board waste materials including gypsum cores and the base paper for the gypsum plaster board adhered to the gypsum cores. The method comprises a step for crushing the gypsum plaster board waste materials, a step for separating gypsum and the base paper pieces for the gypsum plaster board from the crushed gypsum plaster board waste materials, and a step for washing the separated paper pieces by using a rotary drum type washing device to remove the gypsum adhered to the paper pieces.
Inventors:
NISHI MICHIO (JP)
TANAKA TAKEHIRO (JP)
TAIRA SHIZUO (JP)
TANAKA TAKEHIRO (JP)
TAIRA SHIZUO (JP)
Application Number:
PCT/JP2004/018148
Publication Date:
July 07, 2005
Filing Date:
December 06, 2004
Export Citation:
Assignee:
YOSHINO GYPSUM CO (JP)
NISHI MICHIO (JP)
TANAKA TAKEHIRO (JP)
TAIRA SHIZUO (JP)
NISHI MICHIO (JP)
TANAKA TAKEHIRO (JP)
TAIRA SHIZUO (JP)
International Classes:
B03B9/06; B09B3/00; B09B5/00; D21B1/02; D21B1/32; (IPC1-7): B09B3/00; B09B5/00; D21B1/32
Domestic Patent References:
| WO1996019613A1 | 1996-06-27 |
Foreign References:
| JPH06142638A | 1994-05-24 | |||
| JPH08176985A | 1996-07-09 | |||
| JPH11200269A | 1999-07-27 | |||
| JPH10296224A | 1998-11-10 | |||
| JPH11278891A | 1999-10-12 | |||
| JPH06142638A | 1994-05-24 |
Other References:
See also references of EP 1712303A4
Attorney, Agent or Firm:
Itoh, Tadahiko (Yebisu Garden Place Tower 20-3, Ebisu 4-Chome, Shibuya-K, Tokyo 32, JP)
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