Search International and National Patent Collections
Some content of this application is unavailable at the moment.
If this situation persists, please contact us atFeedback&Contact
1. (WO1991005643) METHOD OF MODIFYING TREATMENT OF TIMBER AND THE LIKE
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1991/005643 International Application No.: PCT/JP1990/001332
Publication Date: 02.05.1991 International Filing Date: 16.10.1990
Chapter 2 Demand Filed: 30.04.1991
IPC:
B27K 5/00 (2006.01) ,B27K 5/04 (2006.01) ,F26B 21/06 (2006.01)
B PERFORMING OPERATIONS; TRANSPORTING
27
WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
K
PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING OR BLEACHING OF WOOD, OR FOR TREATING OF WOOD WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
5
Staining or dyeing wood; Bleaching wood; Treating of wood not provided for in groups B27K1/ or  B27K3/105
B PERFORMING OPERATIONS; TRANSPORTING
27
WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
K
PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING OR BLEACHING OF WOOD, OR FOR TREATING OF WOOD WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
5
Staining or dyeing wood; Bleaching wood; Treating of wood not provided for in groups B27K1/ or  B27K3/105
04
Combined bleaching or impregnating and drying of wood
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
26
DRYING
B
DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
21
Arrangements for supplying or controlling air or gases for drying solid materials or objects
06
Controlling, e.g. regulating, parameters of gas supply
Applicants:
MIYAGIKEN [JP/JP]; 8-1, Honcho 3-chome Aoba-ku Sendai-shi Miyagi 980, JP (AllExceptUS)
KYOGYOKUMIAI SENDAI FANICHIA [JP/JP]; 7-3, Honcho 2-chome Aoba-ku Sendai-shi Miyagi 980, JP (AllExceptUS)
TAKAHASHI, Hideaki [JP/JP]; JP
TAMAKAWA, Kinji [JP/JP]; JP (UsOnly)
SATO, Kiyoshi [JP/JP]; JP (UsOnly)
SUZUKI, Isao [JP/JP]; JP (UsOnly)
YUNOME, Satoshi [JP/JP]; JP (UsOnly)
HONMA, Katsumi [JP/JP]; JP (UsOnly)
SUZUKI, Yasuo [JP/JP]; JP (UsOnly)
Inventors:
TAKAHASHI, Hideaki; JP
TAMAKAWA, Kinji; JP
SATO, Kiyoshi; JP
SUZUKI, Isao; JP
YUNOME, Satoshi; JP
HONMA, Katsumi; JP
SUZUKI, Yasuo; JP
Agent:
OHTSU, Hiroo; Room 203, Roiyaru Haitsu Mita 7-26, Mita 3-chome Minato-ku Tokyo 108, JP
Priority Data:
1/26841016.10.1989JP
Title (EN) METHOD OF MODIFYING TREATMENT OF TIMBER AND THE LIKE
(FR) PROCEDE DE MODIFICATION DU TRAITEMENT DU BOIS ET ANALOGUE
Abstract:
(EN) Confident that, when cracks occur in a piece of timber due to the heat treatment of the timber, an acoustic emission (AE) should occur, an effective AE signal directly involved with the cracks is discriminated and detected, and, in addition to this, the total (integrated) number of events and the rate of occurrences of AE are monitored while the drying treatment process and the high temperature treatment process are discriminated to thereby put all above evidences together to predict cracks occurring during the processes of the drying treatment and the high temperature treatment, whereby the temperature and humidity are controlled on the basis of the predicted information to thereby control the atmosphere such that the cracks will not occur. Furthermore, in that case, the timber is impregnated with a specific organic solvent medium to conduct the impregnating treatment where the water and the heat react chemically with each other, whereby the interior of the piece of timber is plasticized and the cracks due to the heating treatment are prevented from occurring and the brittleness in the quality of timber due to the high temperature treatment is greatly bettered, thus improving the workability of the timber.
(FR) Le procédé décrit se fonde sur le fait que lorsqu'une fissure se produit dans un élément en bois à la suite d'un traitement thermique, il se produit une émission acoustique (AE). Selon le procédé, on détecte un signal d'émission acoustique effective se rapportant directement aux fissures, et le nombre total (intégré) d'évènements et le taux de survenance d'émissions acoustiques sont contrôlés tandis que le processus de traitement de séchage et le processus de traitement à haute température sont différenciés, de manière à réunir toutes les preuves susmentionnées afin de prévoir la formation de fissures pendant les processus de traitement de séchage et de traitement à haute température, la température et l'humidité étant régulées en fonction des informations prédites, afin de réguler l'atmosphère de manière à éviter la formation de fissures. Le bois est en outre imprégné avec un milieu solvant organique spécifique permettant d'effectuer le traitement d'imprégnation là où l'eau et la chaleur réagissant chimiquement entre elles, ce qui permet de plastifier l'intérieur de l'élément en bois et d'empêcher la formation de fissures provoquées par le traitement thermique, ainsi que d'éviter que le bois ne soit rendu fragile par le traitement à haute température, ce qui améliore l'aptitude du bois à être travaillé.
Designated States: CA, KR, US
European Patent Office (AT, BE, CH, DE, DK, ES, FR, GB, GR, IT, LU, NL, SE)
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)
Also published as:
EP0496885CA2067824KR1019920703279