Title:
コンクリート長尺体の中空型枠
Document Type and Number:
Japanese Patent JP4445781
Kind Code:
B2
Abstract:
A formwork (10) having a hollow region defined therein for use embedded in an elongate concrete member during casting of a concrete material. The formwork (10) is arranged to be lightweight, environmentally friendly and inexpensive and to have sufficient strength. The formwork (10) includes a tubular member (11) formed by bending an oblong plate of corrugated cardboard (5). The corrugated cardboard plate includes a plurality of corrugated cardboards laminated together and each formed by bonding liner sheets to surfaces of a corrugated sheet. The corrugated cardboards are laminated together with flutes of the corrugated cardboards oriented in a direction across a thickness of the corrugated cardboard plate, and a sheet is bonded to front and rear major surfaces thereof.
Inventors:
Hisashi Yoshii
Yoshinori Hikasa
Yoshinori Hikasa
Application Number:
JP2004059105A
Publication Date:
April 07, 2010
Filing Date:
March 03, 2004
Export Citation:
Assignee:
Eco Board Co., Ltd.
PS Mitsubishi Corporation
PS Mitsubishi Corporation
International Classes:
E01D1/00; E01D2/04; B28B7/28; B28B7/34; B28B23/00; E04G15/06; E01D101/24
Domestic Patent References:
| JP51135432U | ||||
| JP63097762A | ||||
| JP6086927U | ||||
| JP57083830U | ||||
| JP47041144Y1 | ||||
| JP4024310U | ||||
| JP7331614A | ||||
| JP58160113U | ||||
| JP2006096395A | ||||
| JP10305502A |
Attorney, Agent or Firm:
Shuji Sugimoto
Masashi Noda
Kenro Tsutsumi
Masashi Noda
Kenro Tsutsumi