GB2039919A - Method of manufacturing bonded products of cellulose or cellulose derivatives - Google Patents
Method of manufacturing bonded products of cellulose or cellulose derivativesInfo
- Publication number
- GB2039919A GB2039919A GB8005428A GB8005428A GB2039919A GB 2039919 A GB2039919 A GB 2039919A GB 8005428 A GB8005428 A GB 8005428A GB 8005428 A GB8005428 A GB 8005428A GB 2039919 A GB2039919 A GB 2039919A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cellulose
- reduced
- aldehyde
- bonded products
- manufacturing bonded
- 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
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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N1/00—Pretreatment of moulding material
- B27N1/003—Pretreatment of moulding material for reducing formaldehyde gas emission
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Wood Science & Technology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Materials Engineering (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Forests & Forestry (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
Abstract
In a method of manufacturing bonded products, comprised completely or partially of cellulose or a cellulose derivative, such as saw dust, wood chips, paper or vegetable fibres, a condensation resin between an aldehyde, preferably form aldehyde, and urea, melamine or aphenol type is used as an adhesive. The product is irradiated to at most 5 M rad with ionising radiation. Then the material will undergo a certain cross-linking. Residual quantities of uncured adhesive substances are reduced at the same time. The radiation dose is adjusted so that residual quantities of aldehyde in the material will be reduced. Preferably, also the residual quantity of formaldehyde in the material is reduced. By adding additives containing olefinic, acrylic or comparable groups the extent to which cross-linking takes place is increased.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/SE1978/000014 WO1980000142A1 (en) | 1978-07-06 | 1978-07-06 | A method of manufacturing bonded products of cellulose or cellulose derivatives |
Publications (2)
Publication Number | Publication Date |
---|---|
GB2039919A true GB2039919A (en) | 1980-08-20 |
GB2039919B GB2039919B (en) | 1983-02-09 |
Family
ID=20333567
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB8005428A Expired GB2039919B (en) | 1978-07-06 | 1978-07-06 | Method of manufacturing bonded products of cellulose or cellulose derivatives |
Country Status (3)
Country | Link |
---|---|
DE (1) | DE2857545A1 (en) |
GB (1) | GB2039919B (en) |
WO (1) | WO1980000142A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB8624557D0 (en) * | 1986-10-14 | 1986-11-19 | Borden Uk Ltd | Manufacture of fibreboard |
DE19738953C1 (en) * | 1997-09-05 | 1999-03-04 | Fritz Egger Ges M B H & Co | Method and device for the production of molded articles from comminuted material |
EP2508263B1 (en) * | 2005-03-24 | 2015-11-25 | Xyleco, Inc. | Method of densifying fibrous material |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2668133A (en) * | 1953-04-13 | 1954-02-02 | United Shoe Machinery Corp | Adhesive bonding processes |
US3077417A (en) * | 1958-02-05 | 1963-02-12 | Dow Chemical Co | Stabilization of wood and wood products with acrylic-like compounds |
BE587866A (en) * | 1959-04-01 | 1900-01-01 | ||
US3616028A (en) * | 1967-04-04 | 1971-10-26 | Weyerhaeuser Co | Process of bonding resin-impregnated overlay material to a coated substrate material utilizing high-energy radiation |
CH528957A (en) * | 1969-06-04 | 1972-10-15 | Lonza Ag | Process for the production of cellulose-containing material with improved abrasion resistance |
SE403583B (en) * | 1977-01-07 | 1978-08-28 | Akesson Arne | PROCEDURE IN THE MANUFACTURE OF GLUE PRODUCTS OF CELLULOSA OR A CELLULOSA DERIVATIVE |
-
1978
- 1978-07-06 GB GB8005428A patent/GB2039919B/en not_active Expired
- 1978-07-06 DE DE19782857545 patent/DE2857545A1/en not_active Withdrawn
- 1978-07-06 WO PCT/SE1978/000014 patent/WO1980000142A1/en unknown
Also Published As
Publication number | Publication date |
---|---|
WO1980000142A1 (en) | 1980-02-07 |
DE2857545A1 (en) | 1980-11-27 |
GB2039919B (en) | 1983-02-09 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |