Title:
CONCRETE PLACING FORM
Document Type and Number:
Japanese Patent JP2004225376
Kind Code:
A
Abstract:
To improve the service life of a sheathing board of a concrete placing form and to prevent the destruction of natural environment.
A pair of side sheathing boards 2, 2 for this concrete placing form 1, a lower sheathing board 3 provided between the lower ends of the side sheathing boards 2, 2, and an end sheathing board 4 provided between both ends of the side sheathing boards 2, 2 are composed of a polystyrene resin foam. The expansion ratio of polystyrene resin is set to 1.9-2.3 so that the strength of the respective sheathing boards is the same degree of strength as the case of forming them of plywood with the same thickness.
Inventors:
TAKIZAWA KATSUHIKO
FURUYA TOMOMASA
FURUYA TOMOMASA
Application Number:
JP2003014371A
Publication Date:
August 12, 2004
Filing Date:
January 23, 2003
Export Citation:
Assignee:
TONE KASEI KK
TAKIZAWA KATSUHIKO
FURUYA TOMOMASA
TAKIZAWA KATSUHIKO
FURUYA TOMOMASA
International Classes:
E04G9/05; (IPC1-7): E04G9/05
Attorney, Agent or Firm:
Noboru Watanabe
Harada Sanjugi
Harada Sanjugi