FI864120A - FOERFARANDE OCH ANORDNING FOER FRAMSTAELLNING AV EN KORRUGERAD SKIVA. - Google Patents
FOERFARANDE OCH ANORDNING FOER FRAMSTAELLNING AV EN KORRUGERAD SKIVA. Download PDFInfo
- Publication number
- FI864120A FI864120A FI864120A FI864120A FI864120A FI 864120 A FI864120 A FI 864120A FI 864120 A FI864120 A FI 864120A FI 864120 A FI864120 A FI 864120A FI 864120 A FI864120 A FI 864120A
- Authority
- FI
- Finland
- Prior art keywords
- corrugated
- mat
- order
- board units
- korrugerad
- Prior art date
Links
Landscapes
- Dry Formation Of Fiberboard And The Like (AREA)
Abstract
The invention relates to a method and an arrangement for the manufacture of a corrugated fibreboard. In the earlier manufacturing processes the density of the manufactured fibreboard was uneven. In order to keep the density constant, the method according to the invention makes use of a board unit 1, which has a working surface, which can be mechanically converted between flat and corrugated form. A mat 27 of wood chips, which has been coated with a thermosetting resin binder, is placed between spaced upper and lower board units 1 of this type. The board units 1 in a flat condition are then compressed to a limited degree for compression of the mat 27 in order to fix the chips. A horizontal force is then applied to the board units 1 in order to transform these into a corrugated configuration whilst the mat 27 remains between them. The mat 27 is thereby forced to assume the corrugated shape. The board units 1 are then compressed further and heated in order to harden the resin and to produce a corrugated chipboard. <IMAGE>
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI864120A FI86269C (en) | 1986-10-13 | 1986-10-13 | Method and apparatus for making a corrugated disc |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI864120A FI86269C (en) | 1986-10-13 | 1986-10-13 | Method and apparatus for making a corrugated disc |
FI864120 | 1986-10-13 |
Publications (4)
Publication Number | Publication Date |
---|---|
FI864120A0 FI864120A0 (en) | 1986-10-13 |
FI864120A true FI864120A (en) | 1988-04-14 |
FI86269B FI86269B (en) | 1992-04-30 |
FI86269C FI86269C (en) | 1992-08-10 |
Family
ID=8523300
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FI864120A FI86269C (en) | 1986-10-13 | 1986-10-13 | Method and apparatus for making a corrugated disc |
Country Status (1)
Country | Link |
---|---|
FI (1) | FI86269C (en) |
-
1986
- 1986-10-13 FI FI864120A patent/FI86269C/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
FI864120A0 (en) | 1986-10-13 |
FI86269B (en) | 1992-04-30 |
FI86269C (en) | 1992-08-10 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
MM | Patent lapsed | ||
MM | Patent lapsed |
Owner name: HER MAJESTY THE QUEEN IN RIGHT OF THE |