Title:
COMPRESSED WOODY MATERIAL AND ITS MANUFACTURE
Document Type and Number:
Japanese Patent JP3163351
Kind Code:
B2
Abstract:
PURPOSE: To provide a compressed woody material which is excellent in bend strength, surface properties, and dimensional stability and free from a warp and a twist irrespective of its light weight by a method wherein a hard layer is formed on front and rear surfaces by raising specific gravity of only the front and rear part without raising total specific gravity of basic material.
CONSTITUTION: Woody material a water content of which is adjusted 10 a first saturation point or under is put between hot plates, and compressed after heating at a temperature of at least softening point temperature of cellulose being a crystalline component of the woody material and of at least softening point temperature at the water content after adjusting a non-crystalline component. By releasing pressure and cooling thereafter, woody material having a compacted hard layer 2 on both front and rear faces of the woody material is obtained. Waterproofing treatment is applied to a butt end fringe of the compressed woody material 1. The waterproofing treatment can be carried out by sticking fringe sticking material 5 to the butt end fringe or impregnating it with synthetic resin.
Inventors:
Tomoyasu Honda
Application Number:
JP9007795A
Publication Date:
May 08, 2001
Filing Date:
March 24, 1995
Export Citation:
Assignee:
Noda Co., Ltd.
International Classes:
B27K5/00; B27K5/06; E04C2/12; E04C2/30; (IPC1-7): B27K5/00
Domestic Patent References:
| JP6131205A | ||||
| JP8224706A | ||||
| JP6238615A | ||||
| JP754467A | ||||
| JP585937U | ||||
| JP4115604U |
Attorney, Agent or Firm:
▲桑▼原 史生
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