GB693490A - A method of producing porous fibre boards or plates - Google Patents
A method of producing porous fibre boards or platesInfo
- Publication number
- GB693490A GB693490A GB5725/50A GB572550A GB693490A GB 693490 A GB693490 A GB 693490A GB 5725/50 A GB5725/50 A GB 5725/50A GB 572550 A GB572550 A GB 572550A GB 693490 A GB693490 A GB 693490A
- Authority
- GB
- United Kingdom
- Prior art keywords
- digestion
- pulp
- lye
- wood fibres
- mixed
- 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
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21J—FIBREBOARD; MANUFACTURE OF ARTICLES FROM CELLULOSIC FIBROUS SUSPENSIONS OR FROM PAPIER-MACHE
- D21J1/00—Fibreboard
Landscapes
- Paper (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
Abstract
693,490. Porous fibre-board. OMAN, E. March 7, 1950 [March 12, 1949], No. 5725/50. Class 96. Straw or similar fibrous material is digested with an aqueous solution or suspension of lime, the resulting pulp is mixed with wood fibres, e.g. bark or peat, and the mixture is formed into porous fibre-board utilizing some of the waste lye from the digestion as a binder. Digestion may take place in a vessel A and at 95 to 100‹C in a liquid containing waste lye from a preceding digestion. Insoluble substances may be removed from the solution, suspension or lye during or after digestion. From 50 to 80 per cent by weight of the waste lye from the digestion may be mixed with the pulp and wood fibres. The pulp may be milled with waste lye and water in a mill E, e.g. a pulp engine, before being mixed with the wood fibres in a mixer G. The mixture may be drained, e.g. on a wire K, and formed into boards, e.g. under pressure. Most of the lye draining off may be returned to the mixer G and some may be returned to the mill E. The dried fibre-board may contain from 20 to 30 per cent by weight of straw, including the binder, and from 80 to 70 per cent of wood fibres. Specifications 671,251 and 686,250, [Group IV (a)], are referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE693490X | 1949-03-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB693490A true GB693490A (en) | 1953-07-01 |
Family
ID=20315262
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5725/50A Expired GB693490A (en) | 1949-03-12 | 1950-03-07 | A method of producing porous fibre boards or plates |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB693490A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3013935A (en) * | 1959-03-30 | 1961-12-19 | Hawaiian Dev Company Ltd | Printing paper containing low-strength, nonwoody lignocellulose and process of making the same |
| GB2183597A (en) * | 1985-11-26 | 1987-06-10 | Peter Daniel Lloyd Robin | Pallets |
-
1950
- 1950-03-07 GB GB5725/50A patent/GB693490A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3013935A (en) * | 1959-03-30 | 1961-12-19 | Hawaiian Dev Company Ltd | Printing paper containing low-strength, nonwoody lignocellulose and process of making the same |
| GB2183597A (en) * | 1985-11-26 | 1987-06-10 | Peter Daniel Lloyd Robin | Pallets |
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