Title:
防火戸及び防火戸組立体の製造方法
Document Type and Number:
Japanese Patent JP4221449
Kind Code:
B2
Abstract:
A method and system of forming a fire door core are provided. Hydraulic binder and resin are supplied from raw material bins and mixed to provide a submixture. Exfoliated vermiculite is then mixed with the submixture to provide a mixture that is deposited into a plurality of compression molds. Each of the filled molds are pressed in a press at a predetermined temperature at a predetermined pressure for a predetermined period of time sufficient to harden the mixture into a hardened slab. The hardened slabs are then removed from the molds, impregnated with water or steam in a water impregnation assembly and dried in a drying assembly.
More Like This:
Inventors:
Hartley Moies
Application Number:
JP2002534659A
Publication Date:
February 12, 2009
Filing Date:
October 12, 2001
Export Citation:
Assignee:
PREMDER INTERNATIONAL INC.
International Classes:
E06B3/72; A62C2/00; A62C2/06; B28B3/02; B29C43/00; B29C43/02; B29C43/04; B29C43/52; C04B28/02; C04B28/14; E06B5/16; B29C31/08; B29C33/56; B29C43/50; B29K105/16; B29L31/10
Domestic Patent References:
| JP681858B2 | ||||
| JP51386Y2 | ||||
| JP414575Y2 | ||||
| JP22695B2 | ||||
| JP5164729A | ||||
| JP9310560A |
Attorney, Agent or Firm:
Masatake Shiga
Previous Patent: JPS4221448
Next Patent: MAGNETO-OPTICAL RECORDING SYSTEM OF MAGNETIC-FIELD MODULATION TYPE RECORDING DEVICE
Next Patent: MAGNETO-OPTICAL RECORDING SYSTEM OF MAGNETIC-FIELD MODULATION TYPE RECORDING DEVICE