GB711659A - Process for manufacturing wood fibre panels - Google Patents
Process for manufacturing wood fibre panelsInfo
- Publication number
- GB711659A GB711659A GB10885/52A GB1088552A GB711659A GB 711659 A GB711659 A GB 711659A GB 10885/52 A GB10885/52 A GB 10885/52A GB 1088552 A GB1088552 A GB 1088552A GB 711659 A GB711659 A GB 711659A
- Authority
- GB
- United Kingdom
- Prior art keywords
- wood
- per cent
- tannin
- panels
- water
- 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.)
- Expired
Links
Classifications
-
- 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
- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/08—Moulding or pressing
- B27N3/20—Moulding or pressing characterised by using platen-presses
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
- D21B1/00—Fibrous raw materials or their mechanical treatment
- D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
- D21B1/12—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Manufacturing & Machinery (AREA)
- Forests & Forestry (AREA)
- Mechanical Engineering (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
Abstract
Wood fibre panels having a polished surface for direct use for building and decorative purposes are made as follows:- The wood, in fragmentary form, is boiled in water, then hot-treated with an aqueous sodium carbonate solution to neutralize the organic acids set free during boiling, and an aqueous sodium sulphite solution to eliminate part of the lignin contained in the wood. The wood fragments are then disintegrated to form fibres, the fibres are brought into suspension in water, and the suspension is treated in a press with a filtering bottom to form moist panels, which are then hot-moulded in a multiple press to confer thereon a patterned glossy surface. When the wood contains tannin the initial boiling in water is carried out to such an extent as to reduce the tannin content to not more than 1 per cent. based on the dry wood (large quantities of tannin form iron tannate which darkens the panels). Only 20 to 30 per cent. of the lignin may be eliminated by the sodium sulphite. The proportion of salts used may be 7 per cent. of sodium sulphite and 0.7 per cent. of sodium carbonate (based on the dry wood). The wood may be wood waste, e.g. that left by obtaining tannin from chestnut wood.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT711659X | 1951-05-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB711659A true GB711659A (en) | 1954-07-07 |
Family
ID=11314684
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB10885/52A Expired GB711659A (en) | 1951-05-05 | 1952-04-30 | Process for manufacturing wood fibre panels |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB711659A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0518017A1 (en) * | 1991-06-14 | 1992-12-16 | Pavatex Ag | Wood-fiber-board, method for its production and use of the same |
| CN104400863A (en) * | 2014-12-02 | 2015-03-11 | 王凯 | Device for compacting cork wood to hard wood |
-
1952
- 1952-04-30 GB GB10885/52A patent/GB711659A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0518017A1 (en) * | 1991-06-14 | 1992-12-16 | Pavatex Ag | Wood-fiber-board, method for its production and use of the same |
| CN104400863A (en) * | 2014-12-02 | 2015-03-11 | 王凯 | Device for compacting cork wood to hard wood |
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