Method for manufacturing a fibreboard

Abstract

The disclosure proposes a fiberboard made of lignocellulose-containing fibers, in particular wood fibers and a binding agent for providing a fiberboard which enables to combine a high stability, on the one hand, and a comparatively small weight, on the other hand, and which can nevertheless be manufactured with a minor financial effort.

Claims

1. A method for manufacturing a fibreboard, comprising: distributing and pre-compressing a predetermined quantity of dried lignocellulose-containing fibres and a binding agent on a forming belt; activating the binding agent by introducing heat and moisture into the quantity of lignocellulose-containing fibres and the binding agent; supplying the lignocellulose-containing fibres and binding agent to a forming station; engaging a roller positioned in the forming station with the lignocellulose-containing fibres and activated binding agent to deform the quantity of fibres and binding agent into a shaped fibreboard; and curing the activated binding agent within the forming station.

2. The method according to claim 1, wherein the method starting with distributing and ending with curing is a continuous process.

3. The method according to claim 1, wherein the heat and moisture are introduced immediately before the deforming and curing operations.

4. The method according to claim 1, wherein the deforming and curing operations are realized simultaneously.

5. The method of claim 1, wherein the fibreboard comprises an inherently stable three-dimensional deformation which extends into at least one direction and periodically recurs.

6. The method of claim 5, wherein the deformation extends obliquely to a side edge of the fibreboard.

7. The method of claim 6, wherein the fibreboard is a laminate including an additional fibreboard layer.

8. The method of claim 7, wherein the deformations are arranged at angles with respect to additional deformations on the additional fibreboard.

9. The method of claim 1, wherein a ratio of a thickness of the fibreboard with respect to its volume is at least 1:3.

10. The method of claim 1, wherein the fibreboard is a laminate including a flat board layer.

11. A method for manufacturing a fibreboard, comprising: distributing and pre-compressing a predetermined quantity of dried lignocellulose-containing fibres and a binding agent on a forming belt; activating the binding agent by introducing heat and moisture into the quantity of lignocellulose-containing fibres and the binding agent; supplying the lignocellulose-containing fibres and binding agent to a forming station; deforming the lignocellulose-containing fibres and binding agent to form a first layer having waves with peaks; flattening the peaks; and gluing a second layer to the flattened peaks.

12. The method of claim 11, wherein flattening the peaks includes grinding portions of the first layer.

13. The method of claim 12, wherein the second layer includes a flat board.

Description

DRAWINGS

(1) The disclosure provides an innovative fibreboard as well as an innovative manufacturing method which enable to manufacture fibreboards, which comprise a particular mechanical stability with simultaneously a small weight with respect to the spatial volume, with a manageable economic effort by means of an innovative manufacturing unit. Other advantages and features of the disclosure will become apparent from the following description by means of the figures. Herein:

(2) FIG. 1 shows a schematic side view of a fibreboard according to the disclosure;

(3) FIG. 2 shows a perspective partial view of a fibreboard according to the disclosure and

(4) FIG. 3 shows a schematic side view of a sandwich board.

DESCRIPTION

(5) FIG. 1 shows a fibreboard 1 which comprises a progressing rectangular wave structure in the shown exemplary embodiment. As explanation the dimensioning of the board thickness 2, on the one hand, and the dimensioning of the board height 3, on the other hand, are shown. The board height is together with the circumference of the board the measure for calculating the spatial volume of the board. It becomes clear that a very great spatial volume can be obtained by means of an inherently very stable thin board 1 which only comprises the thickness 2.

(6) FIG. 2 schematically shows a board 4 having an essentially sinusoidal deformation progress.

(7) It is obvious that these boards, either in a sandwich construction or as single boards, comprise a high mechanical strength with simultaneously a small bulk density.

(8) As the representation of a sandwich board in FIG. 3 shows, both surfaces of a corrugated and deformed board 5 according to the disclosure will be laminated with two flat boards 6 and 7. Contact lines result along the wave groups. The areas designated with 8 are connection areas, in which glue is applied. The peaks of the boards 5 can be flattened before, for example by grinding them flat. The glue can be applied onto the connection areas 8 by means of a roller, by linear spraying, by means of a mask or the like. The sandwich compound is formed by subsequent pressing. Corresponding connection areas are similarly formed in the area of the lower flat board.

(9) The described exemplary embodiments only serve for explanation and are not limiting.