DE2243267A1 - MACHINE FOR THE PRODUCTION OF WOOD FIBER PANELS - Google Patents

Description

"Machine for the production of wood fiber boards"

The invention relates to a machine for the production of wood fiber boards, in particular chipboard, in a continuous process, with a carrier belt leading the scattered material cake (chip cake) to a press roller and compressing it with this to form a sheet of panels, as well as the wood fiber board produced with this machine.

The object of the invention is to provide such a machine to improve that with it in a rational way a material

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Saving and thus inexpensive as well as having a high strength wood fiber board, in particular chipboard, in different Strengths can be created; Furthermore, this machine should have a simple structure and few operating personnel work trouble-free.

According to the invention is a machine for the production of wood fiber boards, in particular chipboard, according to the type mentioned at the outset, characterized in that the press roller on its circumference with several provided at a distance from one another, the dams running on the carrier tape in the direction of tape movement (Elevations) scattered material cake to a plate equipped with ribs protruding beyond the thickness of the plate (plate web ) pressing recesses (grooves) is provided.

The press roller is preferably provided with annular grooves running parallel in the circumferential direction, which with their entire Circumference run at right angles to the roll axis of rotation; these annular grooves can be divided into individual chambers by individual webs so that the plate ribs to be created are interrupted in the longitudinal direction of the ribs. '

The carrier tape is from one endless to two spaced apart arranged deflecting rollers rotating steel belt formed, the upper strand carrying the material cake on both sides the one arranged between the deflection rollers in the direction of belt movement and with its surface below the supporting strand lying press roll runs in a common, preferably horizontal plane. This carrier tape is preferred for even heat dissipation to the cross section through the ribs Plate of different thicknesses designed so that it can be heated differently, for example in the plate area without ribs made more heat-permeable.

For the trouble-free removal of the ribs from the recesses as well as for the damage-free removal of the pressed sheet metal sheet

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the press roll is a roll profiling in its shape associated squeegee.

This machine is used to press a sheet of panels with the ribs pointing upwards.

In a further preferred embodiment, two are of the same kind constructed machines arranged one above the other as a unit, with the supporting strand of the two belts opposite runs.

The lower machine unit creates panels with upward facing Ribs and the upper machine unit plates with ribs also pointing upwards, but with the plate of the upper unit is moved against the lower plate and is deflected downwards after pressing, so that the ribs of the the upper plate facing downwards and with the ribs of the lower plates butting against one another or offset against one another is connectable.

An adhesive application device is assigned to each band, which the free surfaces of the ribs formed by the groove base provided with an adhesive for the panel connection. There is also a pressing device between the two belts provided, which presses the two plate webs lying against one another with their adhesive surfaces to form a unit.

Further features of the invention emerge from the other subclaims.

The subject matter of the invention extends not only to the features of the individual claims, but also to their combination.

The machine according to the invention enables the production of a material-saving and thus inexpensive in a continuous process built-up fibreboard, in particular chipboard, which

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due to the ribs, which at the same time result in material savings has high strength and flexural rigidity.

The design of the press roll creates flat panel webs in a continuous process that protrude on a surface Ribs are provided - the continuous panel production has given this machine an efficient way of working.

The entire machine is simple and cost-saving and works trouble-free with few operating personnel.

The rib plates created are due to the different arrangement of the ribs to one another or by using a different one on the ribs fixable plate a material-saving and solid plate in different strengths (thicknesses) achievable, which has a versatile purpose.

Furthermore, this machine enables two ribbed plate webs to be connected to form a plate unit in a simple manner this connection with the plate pressing takes place continuously.

It is within the scope of the invention and is preferred, instead of a press roller for the production of the wood fiber boards described above, in particular chipboard, to use an extruder with protruding ribs running in the longitudinal direction.

Such an extrusion press of a known type with an extruder screw has a channel fed by a funnel a mouthpiece or a slot nozzle with a longitudinal slot corresponding to the basic plate shape and an upper one or lower grooves to form the special rib profile. It may be preferred to have not only one extruder screw, but to arrange several extruder screws side by side, the material cake to the mouthpiece, whose clear width is the usual Plate widths corresponds, feeds. This material cake can consist of glued chips or a more or less plastic chip and / or fiber pulp.

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It is also within the scope of the invention to arrange two extrusions with their mouthpieces one above the other in such a way that the with mutually facing ribs emerging material cakes lie on top of one another, the ribs precisely to form Bars directed towards one another or are directed next to one another to form thinner plates.

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Exemplary embodiments of the invention are shown in the drawings. Show it :

Pig. 1 is a side view of a schematically illustrated machine for continuous production of fibreboard with ribs, with an endless carrier belt and associated press roller this upstream spreading and profile spreading device,

Fig. 2 is a plan view of the same machine,

3 shows a side view in a schematic representation a machine for the continuous production of fibreboard with ribs and joints two plates to form a unit with two carrier belts arranged one above the other with press rollers, Spreading devices, gluing devices and pressing devices,

Fig. 4 is a plan view of a press roll with uiflaufenden Jacket grooves and a doctor blade assigned to this roller,

FIG. 5 shows a cross section through the roller according to FIG. 4,

Fig. 6 is a plan view of a press roll with in

Roll circumference direction interrupted shell grooves,

7 shows a cross section through the roller according to FIG. 6,

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8 shows a cross section through the pressing area between the press roller and the carrier belt with an intervening Slab track,

9 shows a cross section through one of two with their Plate formed by ribs lying opposite one another,

Fig. Io shows a cross section through one of two with their

Ribs each formed between adjacent ribs on the plate webs abutting plate track parts Plate,

Figure 11 is a cross-section through one of a ribbed one provided plate web and a flat plate web glued onto these ribs,

12 shows a cross section through a plate with interrupted ribs,

13 shows a longitudinal section through an extruder with

Extruder screw and wide mouthpiece according to the section line I-I in Fig. 14,

14 is a plan view of the same extruder,

15 shows a cross section through the wide nose piece according to the section line II-II in FIG.

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16 shows a cross section through two superimposed, material cake with ribs,

17 shows a plan view of an extruder with several extruder screws lying next to one another.

An inventive machine for producing wood fiber boards, especially chipboards lo, has a the sprinkled material cake 11,12 to a press roll 13, I ² * leading and with this enhancing in a continuous process to a sheet web Io ⁰ carrier tape 15. The press roll 13, I ¹ * is provided on its circumference with several spaced apart material cakes 11, 12 sprinkled on the carrier tape 15 with dams 12 (elevations) running in the direction of tape movement to form a plate Io equipped with ribs 16 protruding beyond the thickness of the plate Recesses 17, preferably grooves, are provided so that the cake 11 sprinkled with elevations is pressed in a continuous process to form a plate web Io provided with ribs 16.

The press roller 13 is preferably equipped with annular grooves (jacket grooves) 17 running parallel in the circumferential direction, which run with their entire circumference at right angles to the roller axis of rotation, so that straight ribs in the direction of belt movement 16 are formed.

The press roller 13 has in the circumferential direction on its entire circumference by webs 19 or the like. interrupted, in individual chambers 18 subdivided annular grooves, which are also directed with their entire circumference at right angles to the axis of rotation of the waltz. the Interrupted grooves 18 can be formed by roller material that remains during the groove production or by subsequently create parts 19 inserted into the annular grooves 18 formed;

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the circumferential thickness of the webs 19 can be selected in various ways - this strength determines the Distance between the ribs 16 to be created in one direction (rib longitudinal direction) one behind the other.

In a further embodiment, not shown, the press roll has spaced apart parallel to its axis of rotation Recesses on through the transverse to the direction of tape movement Ribs are created on the slab sheets. In the case of a further non-positioned version, the grooves are inclined to the roll axis of rotation or helically in the press. roller provided.

The recesses (annular grooves XJJ and chambers 18) of the press roll 13, 14, which is preferably designed as a cylinder roll, have a preferably trapezoidal cross-section that widens towards the roll shell, the groove bottom of which is formed by a flat cross-sectional area and the shell-side cross-sectional edges are rounded and / or chamfered; In the case of the subdivided recesses 18, the cross section of the individual recesses 18 is also designed to be widened in the roll circumference direction and the basic shape delimiting edges formed by the webs 19 are also rounded and / or chamfered on the shell side.

The carrier tape of Fig. 1 and 2 is of an endless, formed around two deflecting rollers rotating around parallel axes at a distance from one another, the upper, strand 15a carrying the material cake 11,12 runs in a horizontal plane and into that between the two deflecting rollers 2o the press roller 13 is switched on. The strand 15a cooperating with the press roller 13 extends on both sides the press roll 13 in a common plane and partially wraps around the press roll 13; it is preferred to use the press roll 13 to be arranged with its outer surface below the plane of the supporting strand 15a and the press roller 13 in the direction of belt movement a belt pulley 21 upstream and downstream, through

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ORIGINAL INSPECTED

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which brought the belt strand 15a down to the roller 13 and brought it back from the roller 13 into the supporting plane will.

A device which spreads a material layer (chip layer) 11 of the cake with the same thickness onto the belt strand 15a 22, a one of this spreading device 22 downstream, the individual material dams (chip elevations) 12 on the uniform Layer 11 for the rib formation of the plate web spreading profile spreading device 23 are the press roll 13 upstream in the direction of tape movement; the profile spreading device 23 spreads the chips in dams 12 at a distance .to each other on the plate layer 11, the distance between the ribs 16 to be formed and thus the ribs 16 resulting Jacket grooves 17,18 of the roller 13,14 corresponds.

One of the press roll 13 in the exit area of the pressed plate web Io, 16 assigned, the plate web Io from the Press roll 13 lifting and in. The jacket grooves 17 for leading out of the pressed ribs 16 allows squeegee 23 a clean and damage-free pulling off of the plate web Io, 16 from the press roller 13.

The squeegee 24 corresponds in its shape (its Peel-off surface, edge) the jacket cross-section of the press roll (Fig. 4).

The press roller 13, 14 and / or the carrier belt 15 are more preferred Heated way, so that the binding agent (glue, glue) added to the chips sets during pressing and the solidified pressed plate shape.

Around the entire plate cross-section, which is of different strength due to the ribs 16, an equally large amount of heat suspend, it is preferred to equip the carrier tape 15 with differently heated zones (strips), wherein the band zones lying in the region of the ribs 16 have a greater heat dissipation than the other band zones. The band 15 leaves

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ORIGINAL INSPECTED

divide themselves parallel or transversely (perpendicular) to the feed direction into zones of different heat dissipation. For this purpose, the band 15 can be positioned in the area between two adjacent ribs 16 (elevations 12) and thus jacket grooves 17,18 with a heat dissipation inhibiting - opposite the tape strips located under the elevations 12 in the heat dissipation reduced insulation layer 25, such as insulation strips arranged on belt 15 or embedded in belt 15, weaker conductive material or the like. equip. Because of this band training, they are different for them strong material cake thicknesses and thus plate thicknesses required temperatures are the same and result on the whole Plate cross-section equal heating. The press roll 13, 14 can also have the same design, with this has a greater heat emission in the area of its recesses 17, 18 than in the area / between the recesses 17, 18 lying lateral surface.

According to the machine design according to FIGS. 1 and 2, a material cake consisting of a uniform layer of chips 11 and raised areas 12 is sprinkled on the belt 15 (strand 15a) running in the direction of the arrow, and then this cake 11, 12 is sprinkled from the belt 15 to the press roll 13, 14 guided ; the belt 15 and the press roller 13, 14 then press the loose cake 11, 12 together to form a sheet of sheets, the binding agent of the chips setting under the action of heat to solidify the sheet. The elevated spreading dams 12 are pressed in the grooves 17 ₉ 18 of the press roller 13, 14 to form the plate ribs 16 and form a one-piece workpiece with the plate Io.

Fig. 3 of the drawing discloses a further machine design for the continuous production of chipboard Io with ribs 16; this machine represents a double version the machine according to Fig. 1 - in this machine two ribs 16 provided plate webs Io are created and then connected to one another.

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41

This machine has two carrier belts 15 continuously revolving around the deflecting rollers 2o, in each of the two upper supporting strands 15a of which a press roller 13, 14 is switched on in accordance with the embodiment according to FIG. 1. The two-bearing run 15a here run in opposite directions and the Trumbereiche lying on both sides of the press roll 13.1 J ¹ each extending in a common horizontal plane.

Each carrier tape 15 as a machine unit is a spreading device 22 and a profile spreading device 23, with the spreading device 22 behind the profile spreading device in the direction of belt movement lies ; the two devices 22, 23 of the lower machine unit extend in one end of the belt and the two devices 22, 23 of the upper machine unit in the opposite other end of the belt (deflection area). The upper band 15 is shorter in length than the lower band

15 and extends in the direction of movement of the upper run 15a of the lower unit behind the press roller 13, Ik of the lower belt 15, beginning and also ending in the end region of the lower belt 15.

With the lower belt 15 and the pressing roller 13, Ik is shut off, a sheet web, the ribs 16 face upwards also j created the upper belt 15 with its press roll 13, Ik a plate web with upwardly facing ribs 16, said plate web through the deflection roll However, it is deflected so that the ribs 16 then point downwards, collide with the ribs 16 of the lower plate web Io or between the ribs

16 grasp the lower web Io.

Each tape 15 is behind the doctor blade 2k an adhesive such as glue or the like. device 26 applying to the free areas formed by the flat groove base j the gluing device 26 for the lower band 15 extends behind the press roller 13 above the supporting strand 15a and the gluing device 26 for the upper band 15 is in the deflection area ( Roller 2o) arranged.

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Behind the press roll 13 _s I ¹ I of the upper belt, above and below the two adjacent belt strands (supporting strand 15a of the lower belt 15 and loose strand of the upper belt 15), a device 27 compresses the two plate webs Io, 16 together to form a plate unit such as press belts, rollers, plates or the like, which press the superimposed plate webs Io with their ribs 16 against each other or press with their ribs 16 lying between adjacent ribs 16 against the plate surface facing away from the flat plate web surface - by the adhesive on the The plate webs Io are connected to one another in the free rib surface. The panel webs or connected panel units produced in these two machine units can be cut to any length. ".

The machine according to FIG. 1 and the upper belt 1 ° with its devices 22, 23, 13, 14 and 26 as a separate unit can also be used to connect ribbed plate webs Io with flat plates 28.

In the pig. 9 is one formed from two plate webs Io Plate made, the ribs 16 with their free surfaces determined by the groove bottom against each other and through the Adhesive are connected to one another to form a unit.

Fig. Io shows a plate in which two plate webs Io with their ribs 16 between adjacent ribs 16 grasp the two lanes Io and at the same time hold onto that of the flat surface of the plate facing away from the plate surface and are held together by the adhesive on the free rib surfaces.

Fig. 11 shows a ribbed plate web Io on its ribs 16 a flat plate 28 is glued on.

Fig. 12 is the plate Io, with in-line, interrupted ribs 16; the rib disruption is determined by the webs 19. Those broken ribs

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are particularly advantageous when moving the pressed plate web Io out of the casing grooves 18, since this plate Io in the rib area (in the longitudinal direction) is subjected to less tensile stress.

In order to be able to connect the ribbed plate webs with their ribs interlocking in a continuous process (Fig. Lo), the press roller 13, I ¹ * and the spreading device 22, 23 of the upper belt 15 are axially adjustable relative to the lower belt 16.

For the production of wood fiber boards, in particular chipboard, in a continuous process according to the present application is found Also preferably a machine is used in which the material cake is made of chips with added binding agent (glue or glue). Like.) in the extrusion process through a correspondingly shaped mouthpiece and pressed on a base, such as a conveyor belt Or the like., Is applied continuously. This extrusion machine, as shown in FIGS. 13 to 15, has an extruder screw 3o in a channel in a manner known per se 31 »in which through a funnel 32 the plasticized Chip mass is entered. The extruder screw 3o pushes the chip mass through a mouthpiece 33, the shape of which the finished fibreboard, like chipboard 3 ^ corresponds. This wide mouthpiece 33 has a wide tip 35, with upper (or lower) grooves 36, so that the material cake to be hardened runs in the desired longitudinal direction Has ribs 37 which protrude from the flat carrier plate and lie in a row next to one another (parallel).

Around the swarf soaked with binding agent during the run to set within the mouthpiece 33, a heating device 38 is assigned to the mouthpiece 33, so that the chip mass after leaving the mouthpiece 33 is at least partially tied and holds its given shape.

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FIG. 16 shows the composite of two wood fiber boards 34 with ribs 37 extruded in the manner described above Overall profile with central webs 39 between cavities 4o of the full-surface wood fiber board on both sides.

If the desired width of the wood fiber board is beyond the extent of an extruder device 31 with an extruder screw 3o goes out, it is possible to use an extruder according to Fig. I7 to be arranged in channels 42 with several adjacent extruder screws 4l, preferably moved by a drive, the one common mouthpiece 43 the plasticized material cake feed, which is added to the extruder screws 41 through a subdivided funnel 44.

It is practical and preferred to use each mouthpiece (slot nozzle) Downstream heating plates to completely harden the material cake.

As a material cake can be used in such an extruder instead Glued chips a chip or fiber pulp are added, the Moisture content is higher or lower according to the given conditions.

As in the case of the manufacture described in accordance with FIGS. 1 to 12 Positioning process using press rolls can be achieved by arranging two extrusion devices (extruders) one above the other with a mirror image (or also offset) arrangement of the grooves 36 forming the ribs 37 in the one above the other Mouthpieces 33 plates with the cross-sectional profiles shown in FIGS. 9 to 11 and 16 are produced in one operation will.

The pressed plates emerging from the mouthpiece 33, 43 34 arrive at a removal device 45, such as a conveyor belt, Support plate, roller conveyor or the like, which represents a support for these plates 34. In the drawing, FIG. 13 only a portion of this support 45 is drawn.

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The grooves 17, 18 and webs 19 of the press roll 13, I ¹ J form molded parts for the plate ribs 16 to be created and the slot 35 and the grooves 36 of the mouthpiece 33, ^ 3 are also the molded parts for the rib formation. The conveyor belt 15 and the screw conveyor 30, ¹ Q form chip material feed devices.

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The deflection rollers 2o and press roller 13 are preferably at the same height (in the same plane) with their bearing axes and are mounted in a manner known per se in a machine frame (not shown) on which the deflection rollers 21 are also mounted and on which the doctor blade 2 ¹ I, feed device 22, 23 are arranged via holding means (not shown). The same arrangement is provided for each plate production unit in the machine according to FIG. 3, but the upper unit (with a shorter carrier tape) can be adjusted in height via connecting means (not shown) such as spindles, lever rods, slides with clamping devices or the like.

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Claims (1)

Claims Machine for the production of wood fiber boards, in particular chipboard with ribs, characterized in, that the same behind a chip feed device, such as a conveyor belt or extruder screw, one in the longitudinal direction (Passage direction) of an endlessly producible panel strand has ribs generating device, those of a press roll with groove-like and / or web-like molded parts running at right angles to the axis of rotation or of a wide mouthpiece (wide slot nozzle) equipped with corresponding passage openings is formed. 2 ·. Machine according to claim 1, characterized in that the Press roller (13, 14) on its circumference with several spaced apart from one another on the carrier tape (15) with dams (12) (elevations) that run in the direction of belt movement, scattered material cakes (11, 12) to form a With ribs (16) that protrude beyond the thickness of the plate, plate (Io) compressing recesses (17) (Grooves) is provided. Machine according to claim 1 and 2, characterized in that the press roll (13) with parallel running in the circumferential direction Annular grooves (17) are provided, which run with their entire circumference at right angles to the roll axis of rotation or the press roller (14) with webs (19) or the like. interrupted annular grooves divided into individual chambers (18) is equipped, the chambers (18) of each annular groove with their entire circumference at right angles to the roll axis of rotation and the recesses (17, 18) of the press roller (13) (14) have a widening towards the roller shell, preferably have a trapezoidal cross-section, the groove of which - 17 30981 2/081 0 reason is formed by a flat cross-sectional area and its shell-side cross-sectional or basic shape edges rounded and / or chamfered. Machine according to Claims 1 to 3, characterized in that the carrier belt (15) is formed by an endless steel belt rotating around two deflecting rollers (2o) arranged at a distance from one another, the upper strand (15a) of which carries the material cake (11, 12) ) on both sides of the press roll (13, 14) arranged between the deflection rolls (2o) in the direction of belt movement in a common plane, preferably a horizontal plane, and the press roll (13, I ¹ O with its outer surface lies below the supporting belt run (15a) and with a belt deflection roller (21) is connected upstream and downstream of this press roller (13, 14) in the direction of belt movement. Machine according to claims 1 to 4, characterized in that the press roller (13, 14) moves in the direction of belt movement a device (22) which spreads a cake (11) with the same thickness on the supporting strand (15a) upstream and this spreading device (22) in the direction of belt movement one the individual dams (12) on the equally thick cake layer (11) at a distance between the jacket grooves (17, 18) and the ribs to be created (16) spreading device (profile spreading device 23) is connected downstream. Machine according to claims 1 to 5> characterized that the press roller (13, 14) and / or the carrier tape (15) is designed to be heatable and preferably the carrier tape (15) is divided parallel or transversely (perpendicular) to the feed direction into zones of different heat emission is. - 18 309812/0810 to Machine according to Claims 1 to 6, characterized in that the carrier tape (15) moves in the direction of tape movement in the area between adjacent dams (12) and thus roller grooves (17, 18) each with one the heat dissipation inhibiting, opposite to the band areas (strips) lying under the dams (12) with a heat lower temperature releasing insulation layer (25), as arranged on the tape (15) or in the same Isolation strips, different tape material or the like. Is equipped. Machine according to Claims 1 to 7, characterized in that the press roller (13) is in the exit area of the pressed plate web a plate web leading away from the roller (13) and engaging in the casing grooves (17) the ribs (16) from the grooves (17) leading out doctor blade (24) is assigned, which is one of the profiled roll shell has profiled peeling surface (edge). Machine according to Claims 1 to 8, characterized in that that two endless carrier belts (15), each with one arranged in the | upper, opposing spreading spaces (15a) Press roll (13, 14) one above the other as machine units are arranged that each press roll (13, 14) has a spreading device (22) and a profile spreading device in the direction of belt movement (23) is connected upstream and a doctor blade (24) is assigned in the exit area of the pressed panel web (Io, l6), that each of the two bands (15) has one of the free surfaces of the ribs (16) formed by the groove base with a Adhesive means, such as glue, is assigned to the adhesive device (26) provided, - 19 309812/0810 that above and below the two superimposed, the lower plate web with its ribs (16) pointing upwards and the upper plate web (Io) with its ribs (16) after being deflected by a belt deflection roller (2o) pointing downwards to the glued, device (27) that presses against each other or between the ribs (16) on the plate webs (Io) to form a plate unit pressing device, such as press belts ₉ -rolls, plates or the like are arranged, that the press roller (13) and the spreading devices (22,23) of the upper carrier tape (15) - upper machine unit - in the axial direction with respect to the lower tape (15) - lower machine unit - are designed to be adjustable. Io. Machine according to claim 1, characterized by a Extrusion press with extruder screw (3o) and upstream wide mouthpiece (33) (wide slot nozzle), its wide slot (35) with arranged parallel to the flow direction at the same or different spacing from one another Grooves (36) is connected. 11. Machine according to claim Io, characterized in that that several extruder screws (4l) next to each other, the Wide mouthpiece (43) are connected upstream and two extrusion presses are arranged one above the other, whose grooves forming the ribs are directed towards one another. 12. Machine, in particular according to claim 1, characterized in that above an endless carrier belt (15) at least one feed device (22, 23) for a material cake (11, 12) and one of these feed devices (22,23) downstream revolving press roller (13,14) with transverse to the bearing axis (in the direction of movement of the material cake) - 2o - 30981 2/0810 extending molded parts, such as grooves (17, 18) for creating a plate strand (lo) equipped with ribs (16) running in the direction of passage (longitudinal direction) and between the two strand deflection (between the upper and lower strand effecting deflection rollers (2o) of the carrier tape (15) is stored within the height of the carrier tape system and that the carrier tape (15) with its upper run (15a) in the area of the press roller (13, I ¹ O at a distance from the press roller (13, 14) forming pockets (with the formation of an abutment pocket) in the direction Lower run is deflected. 13 · Machine according to claim 12, characterized in that the press roll (13, 14) smaller in diameter than that the deflection between the upper and lower strand of the carrier tape causing deflection rollers (2o) is formed and these Deflection rollers (2o) and the press roller (13, 14) are arranged with their bearing axes approximately at the same height. 14. Machine according to claims 12 and 13, characterized in that the carrier tape (15) in the upper run (15a) two on both sides of the press roller (13,14) in the same plane, preferably horizontal plane, extending surface areas, (conveying surfaces), which by the large end-side deflection rollers (2o) and smaller (thinner) pulleys (21) are supported and that the upper run abutment pocket of the carrier tape (15) is U-shaped in cross-section, the U-opening being smaller in width than the width in The area of the press roller bearing axis is so that the material cake guided around the press roller (13, 14) opens it up a wrap angle of over 180 surrounds (wraps around). 15. Wood fiber board, produced on the machine according to claims 1 to 14, characterized in that the same consisting of two ribs protruding beyond the thickness of the plate ( " ²¹ " 30981 2/081 0 butting against each other and in the area of the ribs by one Binding agent (glue, glue) interconnected panel webs (Io) is formed. l6. Wood fiber board, produced on the machine according to claims 1 to 14, characterized in that the ^ Lbe of two ribs (16) protruding beyond the panel thickness between adjacent ribs (16) of the other panel web (Io) grasping and through a touch area between Ribs (l6) and plate web surface provided binder (Glue, glue) panel strips connected to form a unit (lo) is formed. 17. Fiberboard made on the machine according to the Claims 1 to 14, characterized in that the same is supported by a rib (16) protruding beyond the thickness of the plate. equipped plate web (Io) is formed with a flat plate (28) glued or glued to the ribs (l6) is. Wood fiber board produced on the machine according to claims 1 to 14, characterized in that the same projecting on one side of a flat carrier plate (Io), running in a row next to one another and in the longitudinal direction of the row has interrupted ribs (l6). 3 0 9 8-1 2/0810 Blank page