JPS57170739A - Manufacture of wooden fiber board - Google Patents
Manufacture of wooden fiber boardInfo
- Publication number
- JPS57170739A JPS57170739A JP5628081A JP5628081A JPS57170739A JP S57170739 A JPS57170739 A JP S57170739A JP 5628081 A JP5628081 A JP 5628081A JP 5628081 A JP5628081 A JP 5628081A JP S57170739 A JPS57170739 A JP S57170739A
- Authority
- JP
- Japan
- Prior art keywords
- wooden
- water
- fibers
- polyisocyanate
- dimethylformamide
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000011094 fiberboard Substances 0.000 title abstract 2
- 238000004519 manufacturing process Methods 0.000 title 1
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 abstract 9
- 239000000835 fiber Substances 0.000 abstract 5
- 229920001228 polyisocyanate Polymers 0.000 abstract 3
- 239000005056 polyisocyanate Substances 0.000 abstract 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 3
- 238000010438 heat treatment Methods 0.000 abstract 2
- 239000000203 mixture Substances 0.000 abstract 2
- 238000005507 spraying Methods 0.000 abstract 2
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 abstract 1
- 229920002522 Wood fibre Polymers 0.000 abstract 1
- 238000005452 bending Methods 0.000 abstract 1
- 238000009835 boiling Methods 0.000 abstract 1
- 239000004615 ingredient Substances 0.000 abstract 1
- 239000012948 isocyanate Substances 0.000 abstract 1
- 150000002513 isocyanates Chemical class 0.000 abstract 1
- 229920005610 lignin Polymers 0.000 abstract 1
- 239000002245 particle Substances 0.000 abstract 1
- 239000012466 permeate Substances 0.000 abstract 1
- 239000002023 wood Substances 0.000 abstract 1
- 239000002025 wood fiber Substances 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L97/00—Compositions of lignin-containing materials
- C08L97/02—Lignocellulosic material, e.g. wood, straw or bagasse
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
Abstract
PURPOSE:To provide a wooden fiber board that is excellent in bending strength, water-proofness, etc. by spraying successively a mixture of polyisocyanate and dimethylformamide and water on the board and then forming it under heating and pressure. CONSTITUTION:Wooden fibers such as fibers, wood particles, etc. are dried to the moisture content of 7% or less, and into the wooden fibers with temperature over 30 deg.C a mixture of polyisocyanate and dimethylformamide is made to permeate by spraying. In this way the isocyanate base of the polyisocyanate and hydrooxyl groups in ellulose and lignin molecules that are ingredients of wood fiber are reacted to each other to produce urethane combination, so that strong bonding strength among wooden fibers is formed, and at the same time the hydrophilic hydrooxyl group is blocked to lower its water absorbing power. Next, water is sprayed to the wooden fibers are formed under heating and pressure into boards at temperature over the boiling point of dimethylformamide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5628081A JPS57170739A (en) | 1981-04-16 | 1981-04-16 | Manufacture of wooden fiber board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5628081A JPS57170739A (en) | 1981-04-16 | 1981-04-16 | Manufacture of wooden fiber board |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57170739A true JPS57170739A (en) | 1982-10-21 |
| JPS637123B2 JPS637123B2 (en) | 1988-02-15 |
Family
ID=13022675
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5628081A Granted JPS57170739A (en) | 1981-04-16 | 1981-04-16 | Manufacture of wooden fiber board |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57170739A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60180802A (en) * | 1984-02-28 | 1985-09-14 | Nippon Sekisoo Kogyo Kk | Manufacture of fibrous molded layer |
| JP2010241094A (en) * | 2009-04-01 | 2010-10-28 | Hokkaido Research Organization | Fiberboard and manufacturing method therefor |
| WO2015021541A1 (en) * | 2013-08-13 | 2015-02-19 | Enerlab 2000 Inc. | Process for the preparation of lignin based polyurethane products |
-
1981
- 1981-04-16 JP JP5628081A patent/JPS57170739A/en active Granted
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60180802A (en) * | 1984-02-28 | 1985-09-14 | Nippon Sekisoo Kogyo Kk | Manufacture of fibrous molded layer |
| JP2010241094A (en) * | 2009-04-01 | 2010-10-28 | Hokkaido Research Organization | Fiberboard and manufacturing method therefor |
| WO2015021541A1 (en) * | 2013-08-13 | 2015-02-19 | Enerlab 2000 Inc. | Process for the preparation of lignin based polyurethane products |
| US9598529B2 (en) | 2013-08-13 | 2017-03-21 | Enerlab 2000 Inc. | Process for the preparation of lignin based polyurethane products |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS637123B2 (en) | 1988-02-15 |
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