DE2026044A1 - Lightweight sheet material and methods of making the same - Google Patents

Description

Dip! - Ing. Heinz Bcrdehle

Patent attorney

0-8 Munich 26, P.O. Box 4
Phone 0811/29 20

Munich, May 27th, 1997

My reference: P 973

Applicant: Maxwell Alvin Earl Rhiando "Stonecroft", Friary Road South Ascot, Berkshire England

Weight sheet material and Method of making the same.

The invention relates to composite lightweight sheet material having a filling cellular structure and method of making the same.

The object of the invention is to provide a plate material of this type, which is suitable for mass production by a Process can be produced. "

Lightweight sheet material consisting of assembled parts is therefore characterized according to the invention » that it contains a filling made up of a multitude of individual elements consists of tubular elements of fibrous material, which τβrlaufend each other axially parallel and each with two or several adjacent elements are arranged in contact and are held together by adhesives or binders.

009882/1383

The invention makes ameM. A method for producing clay lightly weighed platon material is given, Mach the strips or bands of fibrous material are formed into tubular elements, after which the outer surface of each individual element is coated with wax-hardening ear binder and after which the elements are arranged axially parallel in a large number of layers to form a forming a compact cellular core and after which the resin bath is cured; around. cementing the tubular elements together.

The individual tubular elements can be made up of a multitude elongated materials such as baader, strips, braids or Bäm & er containing strands or seimure, which at they are pinned, held in parallel lag® land here be connected to each other at a desired distance. the borrow interconnected items, with one or several other herons can be matched into one To get core of any wftaseaten thickness, where Borrow the items before summarizing with others Rows are soaked with a binder. You individual tubular elements should be one of the desired dimensions of the flattening material have the same length. The term "tubular" includes drilling circular, square, oval, rectangular, hexagonal or otherwise Understand shaped cross-section sm.

Such tubular elements are hereinafter referred to as "Cores" called.

The invention is illustrated in the following aa & aad iron example Reference to figures explained below. Tone these figures showsi

Fig. 1 shows an echaabildlinah D®rgt®ilxmg ämr ! Reduction

the kernels \ '

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FIG. 2 shows a diagram of the device as shown below to connect the cores to horizontal panels; The Pig. 3, on a larger scale, a disposal device; 4- a view of a roller coating device on a larger scale;

5 shows a cross section through a finished plate; 6 shows a graphic representation of the elements for guiding hot air through the cores for the purpose of post-treatment;

7 shows a diagrammatic representation of a device for the production of panels according to a Yertical method in Assembly line operation;

Fig. 8 shows another vertical method suitable for mass production;

FIG. 9 is a side view of the device according to FIG. 8; FIG. 10 shows a modification of FIG. 7; 11 shows a modified arrangement of the cores; 12 shows an arrangement for arranging rows of cores in plate form;

FIG. 13 shows a further stage of that which can be seen from FIG Operation;

FIG. H shows a detail of FIG. 12 on a larger scale; FIG. 15 shows the coating device according to FIG. 12 in larger scale;

Fig. 16 rows of interconnected cores in their correct position;

17 shows a device for compressing the rows of γόη cores;

FIG. 18 is a plan view of the arrangement according to FIG. 17; Fig. 19 shows a vertical molding device; -The Fig. 20 several rows of cores entering a vertical shape;

21 shows a modified representation in perspective Type of manufacture of interconnected rows of cores;

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22 is a schematic representation of a system for Interconnection of such rows within panels; FIG. 23 shows a detail of FIG. 22 on a larger scale,

The fibrous material which forms the starting material for the cores can, for example, be made of paper or others Cellulose fiber consist. Other starting materials are also suitable, as indicated below. The fibrous Material is prepared in the form of a continuous ribbon, for which the fibers are cut to a certain length and distributed on a conveyor that supplies aqueous or synthetic resin binder that the fibers stick together on the conveyor belt. It is then subsequently cured or dried, what dated depends on the solvent used and with the help of conventional pressure and roller rollers, which the thickness and surface of the Determine the band, pressed into a continuous band. The preferred thickness of the tape is between 0.02 and 0.5 inches.

The tape obtained in this way is cut into strips of suitable width, for example from 5/16 "to ^{1.0 M} , using several saws or knives. All or some of the strips are placed in a soaking container which contains air-drying binder or the like so that a thin film of adhesive is deposited on the top or bottom surfaces, or on both surfaces of the tapes, or any other method of applying glue to the surfaces can be used.

The cores are made from such strips as shown in Fig. 1, for example. According to this figure will be a row of calibrating spindles 10 belts under one

fed, certain angle as shown at 12 / such that the Spindles act as winding mandrels. It is advantageous if the tape 12 is fed to the outer end of the mandrel in such a way that

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that the edges of each band match the edge of the neighboring one Overlap the turn when it wraps around the mandrel. Neighbors Windings are then glued together as a result of the soaked surface of the tape. The one educated in this way tubular core slides over the inner end of the spindle and is cut to a predetermined length The cores can, if necessary, consist of more than one layer of strip-shaped material, in which case more than one Tape is fed to the mandrel at the same time. In all Cases is the surface of that part of the strip which is fed first to the mandrel and so is its surface directly touched not soaked with binder to prevent the tape from sticking to the mandrel surface. It is It is advantageous that if more than one band is coiled spirally together on a spindle, the edges of each Tape butt against each other without also overlapping, as explained above, so that the core is the same everywhere Has wall thickness.

The core elements, which are cut off at the ends of the spindle, fall onto a conveyor belt H, which the cores in a collecting container 16 transported. As Fig. 1 shows, 6 core-forming devices work together with a former conveyor belt and of course there are so many Core-forming devices in operation at the same time as this with an insight into the cores to be generated per unit of time is required. As shown on the left side of FIG Is, a corresponding core-forming device 18 delivers cores to a further conveyor belt 20, which the cores into a Collecting container 22 transported.

As can be seen from Fig. 2, the plate forming device shows, the cores pass from the collecting container 16 through an opening 24 iwiEthen guides 26, between which they slide through until they hit a wall 28 of a segregation device abut, which is geieigt in Fig. 3. At this There is an atateföreiger that can be moved back and forth

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Die 30, which is normally associated with the lower guide 26 flees. There are reciprocating plungers (not shown) or magnetically actuated plungers (not shown) via a rod 32 with the punch in connection with its Generate back and forth movement between the level of the lower guide and another inclined guide 34 * u. It will therefore, when the cores 4-0 move along the guide 26, the foremost core abuts the wall 28 and then through the The punch 30 can be lifted up and onto the inclined guide 34. With the help of this device it is possible to make the cores 40 in any predetermined time intervals on the guide 34 admit. The cores 40 slide down the guide 34 and come into contact with the paint roller 36 shown in FIG is shown more fully.

This Fig. 4 aeigt that the roller 36 is rotating by a Moved container 42, the thermosetting binder or the like contains, so that on its surface a uniform Coating arises as a result of the action of the doctor blade 44, which determines the thickness of the coating, after the joint between him and the surface of the roller 36 has been determined by appropriate adjustment. the Cores 40 sliding down the guide 34 come in contact with the paint roller 36, remain and become adhered to the adhesive layer thereon while being lifted one after the other from the lower end of the inclined guide 34 and through the roller 36 to which they adhere, brought into contact with a series of fingers 46. These fingers are preferably leaf springs that approximate the shape of the paint roller, "As each core comes into contact with the row of fingers 46, it is waved to move into a the direction of rotation opposite to the direction of rotation of the paint roller IU move. In this way, when the cores 40 move through under the fingers 36, they do one Counter-rotating movement with and "was, since the fingers 46 sufficient

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Have length, at least one full turn. Furthermore, the coating of the paint roller 36 provides the space reduced in size between their surface and the inside of the fingers, the cores are pressed into this coating, so that this is partially deposited on each core. Each core then moves in the direction of rotation of the paint roller further until it abuts a deflector plate 48 which causes it to be detached from that part of the surface of the paint roller 36 before that again into the lower part of the reservoir 42 enters.

You see Pig. 2 that the above-mentioned device is provided twice, so that two sets of cores on a downstream conveyor belt 50 on which the panels are produced. As can also be seen from Fig. 2, carries the conveyor belt 50 has a number of transverse dividers 52 which determine the one dimension of the panel to be formed. These are mounted so that the space between their adjacent edges is of the desired dimension. Besides that the height of the dividers 52 is the same as the desired thickness of the plates to be formed. Located on the conveyor belt 50 there is a layer 54 of paper, foil or the like on which the falling cores get when the conveyor belt is moving 50 moves under the baffle 48.

A rotary press 56 cooperates with the conveyor belt 50, which consists of metal rods, which are connected to one another similar to a chain-shaped conveyor belt are. Above the metal rods there are rollers (not shown) which press against the entire surface of the rods to press. To prevent the resin binder from sticking to the surface of these rods, paper or Plastic material from a reel 60 is placed on the exposed surface of the cores prior to the hotationspreese reach.

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While the part of the cores that are "wipe the dividers." is moved under the rods 58 of the rotary press, these are pressed together. Through one to the Hotation press 56 belonging device that presses hot air through the cores, the resin is dried and thereby hardened. This device is shown in detail in Fig. 6, which shows a cross-section through the conveyor device shown. As can be seen, nozzles 62, which face one end of the cores 4-0, produce a motor_driven one Fan 64, an air stream that flows through a heating device (not shown) and from there through a nozzle 62 through the interior of the cores 40 and, if desired, through a return 66 back to the fan 64.

The plates of core elements produced and hardened in this way are of the one in FIG. 2 on the right Side shown end of the conveyor belt removed.

A section through part of a finished panel is shown in FIG. As can be seen, has a dividing or locking block 52 has profile grooves on its inner surface in order to enable the individual cores to be assembled correctly. In the case shown, the cores are arranged so that the first layer is the space between two dividers completely fills out. The following layer is arranged so that each core in the narrow channel between two underlying Cores lies so that lines connecting the centers of the cores enclose an angle of 60 °. It However, if desired, the cores of adjacent layers can also be placed one on top of the other so that the centers of one another lines connecting touching cores enclose an angle of 90 °.

About the delivery of the cores from the storage container to the paint rollers and to facilitate proper placement of the cores in the sheet forming sheet are a number of

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Vibrators 70 are provided. For example, some electromagnetic Vibrators should be placed in the position shown «Their vibration causes each core to rotate moves and takes a correct position. Resin coating each core further improves the in-place. Bringing the cores, as the cores tend to come together due to the adhesive effect of the above-mentioned coating place.

While as the fibrous material paper was mentioned above, other fibrous materials may _s be used, for example, asbestos fibers, glass fibers, organic fibers such as Polyprolene, cellulose, vinyl chloride, wood pulp fibers, jute and plucking, metal fibers such as aluminum, carbon fibers, rayon and cotton fibers. The fibrous material can also be of woven or wound form, or in the form of woven and pressed sheets, such as sheets of paper reinforced with meshes. Such reinforced sheet or ribbon material can include continuous reinforcing fibers. Fibrous material containing a suitable tacky binder, starch or glue varnish, base varnish or synthetic binder can also be used to ensure that the material can be formed into sheet or tape form by compression and compression.

Thermosetting resin was mentioned above as a binding material. However, synthetic resins and powders such as unsaturated polyester, melamine, urea formaldehyde, Phenols, reorzin, phenol bismuth, epoxy, polyamides, polyurethanes, Silicones, alkyd resins, rosin and animal glues are used will. To the thermoplastic powders, diapersions, pastes and solvents include e.g. polyvinyl acetate, polyvinyl chloride, Polivinyl fluoride and copolymers, polyethylene, polycarbonate, polytetrafluoroethylene, phenolate, methylpentine,

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Ethylene vinyl acetate, acrylic compounds, butadiene, styrene, Polystyrene. Such materials can be Weichmaoher, addition © «To increase elasticity, earth pitch, bitumen, tar pitch, Contain catalysts, accelerators and similar additives.

The non-flammable binders include cementitious materials such as super-sulphate binders, high-alumina binders Binder, water putty, calcium silicate. There are also suitable binders that represent gypsum derivatives and especially those that contain cellulose. Also binders, based on ceramic glazes and on water glass. Such materials contain plasticizers, quick hardening additives or organic binders. Other binders and impregnating agents contain silicate, calcium carbonate, Potassium carbonate, portland cement and plaster of paris, Den Fireproof additives can also be added to binders «

It can also be materials ₈ B. Butyl odor latex used in gum base as Z, which also include rubbery materials such as polyurethane. Flammable and non-flammable foams such as polyurethane and foamed aluminum and the like can also be used.

Of course, all types of liquid thermosetting can be used or powdered binders or polymers are used that no longer retain their original physical state by themselves assumptions, not even if they are not heated too much, if they are only able to do so at low or high temperatures or harden through electronic cold curing. Even thermoplastic polymers that soften when heated and which harden on cooling can be used.

Thermoplastic polymers that soften when heated and harden when cooled can also be used wtrden. The tubular elements can thereby be produced

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be made that strips of this material are passed through a tube that has a corresponding inner diameter with the edges of the strips overlapping and glued together, as in the case of the spiral Aufwickeins was the case. According to another method, the strip-shaped material is introduced into a tube which has perforated walls and the outside thereof is subjected to a vacuum so that the strips are on stick to the inner circumference of the tube, with the edges overlapping and sticking together.

In Fig. 7, a device is shown for the production of plates in vertical operation. In this case, the delivery and the coating of the cores goes into in the same way as was described with reference to FIG. Under the baffles 48 are a pair arranged by rollers 72 over which belts 74 »76 of paper, plastic, foil or the like move, and which are intended to form the surfaces of the panels " A limiting block 78 is initially between the two bands in a secured position and the cores that dureh As the baffle 48 is removed from the roller, it will collect on the boundary block, which together with the belts between two conveyor belts 80, 82 composed of plates, the width of which corresponds at least to the length of the cores, is moved down.

The plates of the conveyor belt 80 form a support surface, while the plates of the conveyor belt 82 by means of pressure rollers 84 are pressed against the belt 74, so that the space between the belts 76, 74, which is filled with the cores 40 has the desired thickness of the plate to be produced.

At one point on the conveyor belts 80, 82 is a drying device attached, as shown in Fig. 6,

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with which the coated kernels are dried and hardened. The sheet material moves downwards and pieces of the required length are cut off by means of a saw 86 and added by a tilting bed ΘΘ which is the finished Plate moved out of the direction of movement of the following.

FIG. 10 shows a variant of the arrangement according to Pig. 7 shown. It has four feed paths for the molded Cores which are transported by the feed conveyor belts 14, 20 to the collecting bins 16, 22. The collection container have two outlet openings so that four rows of cores are delivered to the four paint rollers 36 and 36A. The baffles 48 of the upper pair of rollers 36A run down enough to ensure that of the Cores removed from rollers 36A do not adhere to rollers 36. Incidentally, the way of manufacturing plate material the same in the vertical direction as shown in FIG. 7 was explained. FIGS. 8 and 9 serve to explain yet another filling method. With the one shown there Arrangement, the conveyor belt 90 has a number of vertical dividers 92, which extend at least as far from the conveyor belt 90 extend upwards as it corresponds to the length of a plate. The dividers 92 have a mutual distance from the desired Thickness of the plate. The conveyor belt 90 reciprocates in the horizontal direction and always will stopped when the space between two dividers is just below the two baffles 48. That The conveyor belt then stops until the required number of cores has fallen into this shaft. While During this operation, a number of vibrators 70 are in operation to assist in setting the cores in the well. If the last layer of cores is placed between the dividers, a heavy one can not be shown here Rod to be placed on the last layer, the one from the top

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of the shaft exerts a downward pressure on the cores and prevents the cores from vibrating out of their guessed right location. You can use vibrators 70 usual bracket to be attached to the underside of the support of the conveyor belt to, if desired, a to be able to achieve straight vibration.

When the shafts are filled with cores, the latter are cemented together by letting them move / through a heater fan arrangement as shown in FIG. 6, and which is arranged, for example, opposite the shafts shown in Fig. 8 on the right-hand side. In this case the mouth of the air duct must extend over the entire height of the extend more steeply and be wide / enough ^ around several shafts to be able to influence. As described above, the adhesive layer is hardened on the surface of the cores, thus the individual cores are connected to one another. Needless to say, it applies to all of the above Dry facilities required that the amount of thermosetting binder applied to the cores must be sufficient to the extent that, after a certain absorption by the cores, the best of the binder layer on the surface of which is still sufficient to ensure that the individual cores are cemented together.

When the conveyor belt 90 carrying the dividers 92 has moved in one direction, for example in the direction to the right, as shown in Fig. 8} so that all the shafts are filled and / cemented together each of the chambers is also hydraulic on one or air ram 94, as shown in FIG. 9, moved past the cemented core plates laterally out of the space between the dividers 92 moved out and onto a receptacle 96 that Has guides 98, β · that the plate completely from the

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Shafts can be removed. When all panels have been ejected, the conveyor belt moves gradually to the left in order to bring the individual shafts into their filling position.

In the arrangement shown in FIG. 12, the preformed tubular cores carried by the conveyor belt 14 into the Storage container 16 have been brought through the space 24 located between the guide plates 26 towards the separation device 28 and then between two further guide plates 100, 102. One in the vicinity Opening 104 of the plate 102 is rotatably attached to a roll of sticky tape that is unwound and against the row of Cores are pressed while they are moving downwards. Several bands are thus longitudinally spaced at suitable intervals of the kernels. For example, a band of one inch wide on the surfaces of the cores in order to connect them evenly during their downward movement. For example, if 8 foot cores are used, there will be a roll opposite each of your ends of tape and three more rolls of tape are then spaced 2 feet apart attached to both outer rollers so that 5 adhesive tapes are attached to the surfaces of the cores at the same time. The rolls of adhesive tape, such as the one marked 106, can be held by a standard spindle which is freely rotatable is or is being driven. The adhesive tape can be attached at ambient temperature «or it can be warmed up beforehand. Adhesive end material can be used which has a self-adhesive coating or which is warmed or moistened must be in order to develop an adhesive effect, such as self-adhesive thermoplastic tape or paper tape, on the animal glue is attached and must be moistened «The adhesive effect can be produced when the tape Required moving from Holle to the core rows

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if so, one or more pressure rollers 107 can be provided pressing the guide plate 102 against the taped surfaces of the cores.

The rows of cores 40 move along the guide plates down and then are placed underneath a painting device 108 which applies a coating of adhesive to the cores. In the case shown this will be Adhesive material is applied to the top surface of the core rows, but it can also be top and bottom if necessary are applied when the interconnected cores are moved freely hanging. It can be one of the well-known ^ Suitable painting methods can be used, such as spray painting, trough impregnation, roller application or the immersion bath method.

line particularly suitable method is explained with reference to FIG. 15, where a rotatable roller 110 is shown, which is shown in FIG a storage container 112 in contact with waste material comes and which is assigned a scraper plate ϊ, between which and the surface of the roll a gap is formed through which adhesive of the corresponding thickness passes. Adjacent to the lower part of the roller is another scraper plate 116 which contacts the roller and here- | it scrapes the adhesive off the roll surface as it rotates past it, causing the adhesive to face down drips onto the surface of the cores that have just moved past the stripping plate 116.

While the cores were painted here after the tapes were attached, this can be too another suitable time of the prior to covering the Cores hit cover material lying work process happen.

As can be seen in FIG. 12, this becomes the painting device leaving core row on another row painted

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Cores placed around a larger bead of the plate material xu achieve. Even more rows are being painted Cores on the devices shown in Pig * 12 accordingly Devices generated whose! Peile are arranged in floors that any number of borrow painted Cores to layers of the required board thickness can be merged. Like in Pig. 13 shows a fourth and final core row 118 on top of the third Core row is laid by moving the conveyor belt 20 from left to right, being at the upper conveyor belt is the paint conveyor belt.

The superimposed layers of cores can be mutual Exhibit location as in the pig. 11 is shown where cores corresponding to each other of each layer are interconnected align, or as shown in Fig. 16, where the cores each row in the grooves between the cores of the neighboring ones Row or rows lie. In the case that three layers are on top of each other, the cores of the middle row can have a diameter of one inch and those of the outer row Rows are 1/4 inch in diameter with the latter cores spaced such that each of them touches a neighboring larger nucleus.

The bringing together and placement of the individual rows of cores can be brought about by each of the Rows of cores is guided over synchronously rotating gears, with each of the cores in the so-formed notches must come to rest while the row is placed on the row already on the conveyor belt. It can other means of bringing the individual core rows together and inserting them into position can also be used, such as pins, which engage the open ends of the painted cores as they move along the conveyor belt.

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Separating films such as ζ.B. Paper, cellophane, decorative foil, veneer material such as plastic foils, hard cardboard or other sheet material the opposite Surfaces of the upper and lower conveyor belts fed so that the glued cores between

en

worth layering this foil material? and thus prevented will cause the adhesive to come into contact with the surfaces of the conveyor belts.

If the cores are located in the correct position on the conveyor belt, cores are compressed as in the above embodiments i with the aid of vibrators here. The tighter packing of the cores can also be accomplished by a movable device located between the upper and lower conveyor belts as shown in FIG. 17. In this case the dividers 124 run parallel to the cores between the upper conveyor belt 126 and the lower conveyor belt 128. As shown in FIG is placed, the dividers 124 press against the cores to achieve a compact layering. The pressure is reduced again when the stratification is sufficiently compact. This can be done by reducing the straight-line speed of movement of the dividers in relation to that of the conveyor belt.

As shown in FIG. 19, the core rows move similarly as explained with reference to FIG. 12, compiled were, past the painting device 108 and over the conveyor belt 130 into shafts through vertical Dividers 92 are formed which are similar to those shown in FIG. At the same time, another core series, which has been compiled in a corresponding manner / via a Conveyor belt 132 in the desired relative position to the other

borrow headed into the same shaft. If necessary, the The number of core rows introduced into the vertical shafts can be increased, for example Pig. 20 five core rows, which are in corresponding relative Layer can be inserted into a vertical shaft.

Of course, the cores also undergo a hardening process here when they are layered in the individual wells by how it was explained with reference to the exemplary embodiments described above, and which serves to to glue the individual kernels together. If the with glue provided cores have passed the curing device, the plate material emerges in the hardened state and is then cut to the length required for storage or use. It should be noted here that curing can be carried out by moistening the fibrous material of the cores, or by the fact that moisture or solvents are driven out of this material.

As applications of the plate material obtained in this way are to be mentioned above all: house subdivisions, roof ceilings, formation of walls for structural and other purposes, their stability and light weight can be used to particular advantage. It's an even more important quality is that when the sheet material is bent, each core tries to have an elliptical cross-section to assume, as is the case with bending any tubular material, and that, since the cores are very are arranged close together, each core taking on the neighboring in this experiment an elliptical cross-section so that the pressure exerted by the individual nuclei on the others is compensated by them. Due to the The high flexural strength obtained in this way is the material according to the invention also as a material in the Suitable for mechanical engineering, e.g. as a group of experts in

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Container construction, as corrugated shaped plates, as lamp frames and the construction of freezer containers, to name but a few of the possible uses to mention"

Although there has been talk of such tubular cores that are manufactured using the spiral winding technique other techniques using a single sheet or ribbon of fibrous material may also be used, whose length corresponds to the required length of the tube and whose width is slightly larger than the desired circumference of the drill and that is placed around a shape element, with the edges overlapping. May be used as a fibrous material Hard paper can be used

If necessary, the device for applying the tape 10, 106, 102, 107 can be used with slight modification the devices as shown in Figs. 2, 7, 8 and 10 are incorporated, so that the cores before their Insertion into the forming shafts running parallel to one another connected to form rows siü, "" "! In such a mechanism, as shown for example in Fig. ι τ, could as indicated in Fig. 4 with dashed lines, be arranged. In this case, the fingers 46 would be the Core elements only press against the roller 36 without them to put in a rotational movement directed against the rotational movement of the paint roller, and there would be further binding agent in the manner mentioned above on the upper surfaces of the cores connected in rows.

It should also be mentioned that the hardening or heating protiess, as described above in particular with reference to FIG. 6, according to which the tubular cores as Channels for axially flowing hot air serve the advantage offers that the heat source, such as hot air or introduced heating elements or the like, in order to produce the binding effect,

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within the whole plate only. Material on the thickness have to heat a core wall. Performing the entire Plate through a heating clip would be totally unsuitable for setting within a reasonable time achieve.

The Mg. 21 shows a modified device for the production of rows of cores, which are connected to one another by tapes are connected. In the arrangement according to this figure, the cores 140 are fed to a conveyor belt 142, which consists of its of members 14-4, which, as shown, against each other are arranged offset. From; each of the rotatable links 146 of adjacent links a pin 148 protrudes upwards, which is used to fix and separate the cores 140, so that adjacent cores are roughly midway between adjacent links between a pair of pins 148 too come lying down. The conveyor belt 142 runs around a guide roller 152 and transports the cores between two guides 150, which are bent up at their upper end and so the way determine the kernels.

As they move past the guide roller 152, the cores fall off the conveyor belt 142 and between the two guides 150, which guide them onto the toothed surface of a hollow 154. This roller moves clockwise and picks up a core at a time between a pair of adjacent teeth 156 as the cores exit the guides 150. The teeth 156 serve to discard and keep the cores spaced apart. As the roller 154 rotates, it brings the cores into contact with an adhesive tape 158 which is unwound from a spool (not shown), whereby the cores are evenly spaced from one another. The tape carrying the cores is guided by guide 162 over a crimping wheel 160 which is provided with teeth 164 which cause it to align between adjacent cores

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located Bind an dl; surface of the kernels anie ^ t, // oduroh the kernels au ^ a ^ eiuai i-Ί ^ ΎιΑ i-unfcakh brought werdon, Ditj series Ton Κυηΐϊϋΐ b - ^ '/ tgb .ni'ih umul fi-iih ^ a duroh ΊύΐΊ '.Ί ihtuiig-ni 15 ma Besehioh.t Jii, Auffci.si':: ii-t ι 3 ^ -, ϋΐ, B'.jrinen, Profj.-jtiii and iiarböii, jvie: j Ι «rorsb jhiii L b -is; ; hi * i ib-m were "Oi-mail'k ^ in ^ that one gaii2v) ATII äahl- koaxift-l ^ ηπ -οκ 'iii-r ^ or gp.' / A'ünib.M 'R : 'id, u ^; s ^ i'g ianhon sein iZoaiivtij dia jj / vriLl.) ri *, -iineia ünMoLrad auj ^ iäiohinacboL ton,

The fi. ^ J - ¹ Ji * s - jiifc Ii *) l) uijfcvl lunj 3.in ») t · Λ λ 1. μ.; ·; · ■) ¹ AIi. ' Here? .-jb ^ i lung tone PUiLh-jii, UU! KöJ? Iii? ';; ihyii, Jini in düi ¹ uiiti-H' BKiUi ^ iahjiia on FLg, 21 ji ^j l.äufcrii "boii f« iiJ-; -jiibij t-ιηύ m iJiiid, never L ^ b: io *) ing .-> ^: ·· richte!; ,, d: iis di ^. PLifcbm m \ - / ln; layers of Kitü-m har ^ j ■ sbelit - ^^ rdviiji ίά di.-j Js "->/'iii.3oliböiiL'jkö iju Si- ¹ JL) LQn ₁ Hin ut > sichtiiiih, yeLiJb * jle / in ¹ f arinufuhra babioiifcii A _} D, (J and I) on, dL-j on öM.ii'- jr or Uk) ¹ Uf-Jt ¹ On orhcihben} 3iihnon doc aiigei) i'dn? Hi ij.Lnd and 70η donen dio kernels LnfoLg.0 do ν B & l krafb öiiliaiig Führtiii ^ ii 150 an jev.iLis üLne / reltüi'ü fall, ln thorns there are "attachments"! ¹ öi'foLgb, ULe Sbabion D ILöi'erb Ii-) ruhronformLiitm Ke) CiIt) to a Pördarbnnd 168, the eich ύγηύιι> οη mi b 'der Pi u-ivor direction havrogb, dl?) DLe Platt tin, // Lc) / ire Lt-j r unton b iSühriübdn become wLrd, auimnimen ·· presses, I) L-? 'Blinder I ¹ K) Λΰ.νά-.αι von ) Lner RdLLa 166 ablokelfc "and" were brought into contact with the B'öi dar band 16t) Ln , "imböL the nuclei, which in 0 tu bär B ¹ OL ^ e to dLs Bünder 1 * 58 are delivered, to dLes-jn? n. The row ₍ aitöLnandör rfjrbundöiidr Köliiö biidet eLn <) has a flat base, btii. Bund -Lab not gebördöLb) and on the other Kfjrnr-jLhen göljgi. N-jvuhü,

DLe kernels, - dLe duröh dLsj ΡηΙιηιηκοη ifiO beL J-) dor άύν iWiii ^ lon-ni A, B and (J 4? U.: J6führung werdni,, / - ifden jäweLiu directed to sin gear 154 and dur-jh Bänloi Ii ) B, which are from RoLL. «Sn I66 ub ^ -ow.Lokslt, an d-iiien jI i iinhafi; m, zuiiamaiongöhaLten and iwar in diir üi the gear yoneinuudor ab ^ ij.jondsrtjr fjage, DLj KirnreLhiin, the "

- 22 - 009 882/1383

" ^{? /} - - 2Ü260U

; .IL;)! LiLiSItU) Ii ^ ahiir'H ^ r 151 have passed at an IW) L 'lilirad 160' / orb'iLäjöisifcet, daa core rows of the based on the PLi ^ 21 be-ü-.3hri.- ? b9xiija; \. rt era

Tieräsn on leadership biitae 170, the Ub j oa L nand ^ r tm ^ aordiiö b aind, by a spray booth 172 ipLri did, in dor sio UiIb adhesive are coated. Uaoh templates d-jr oprühkabina 172 they pass further guides 17! · (I) ¹ IJ ₀ 23), AQ dafJ dio rows susaiaaiangäführerfe and dij KyriiJ btinaohbarfcjE ¹ rows ineLnaiidar grab »Dia so ν; i.aLii! .Iiten rows j -jrdön then between the pressure belt 176 Hi »I d'3'ä li'ör-lürband 1/8 Hindu-like, where Purnisrfolien t.li..i Üb-oi'fläahe form the PLabbe, which τοη rollers 180 to 10 ,! abgo / 7ickeib viardsn and sv7is see the volume 176 and the Kot'iiö bzy ;. since α federal government 182 in the above-described W ^; ) i; 3d i5 <3 leads wördiiti.,

The oiling of the three upper layers contributes to the fact that the Ktjriiij -, yesterday. when putting the core rows together, take the correct lag =}. It is advantageous if plates 184 are arranged against Uboi 'the RoLlöii lob _for damage to döLYJölben Yörhäter, when a replacement of the bands is necessary,

In the other embodiments of the plant, there is also a device in the case not shown in the Hart "n b_T # _ä heating on some Stella along the Pöi.'darbuilder 176, Γ / Ο angöordiiatj so that the Plattaniaatrial di;) ßäiidsr Lsii g.jhärtetön Zuabasid leaves. Sometimes as tin.'jjasLgt '.IiJ ^ n KLi) bi3toff one component such as -3.B ₈ , Gipa baiauai.l ... j-jhon, dL-i di,. :: li'euohblgkaib from dam treated material iii. ihb and aüi ¹ dij.} -) Woiaa dia sum drying required Zoit Vivk'urzl * ; j: il.b _; Of course, there can also be other subotanaes, which have the same absorption properties in stables of

- 23 009882/1383

2Ü260U

Plaster of paris can be used.

Above we spoke in particular of the tubular ones Manufacture elements from fibrous material such as paper. However, if necessary, they can also be made of metal, metal alloys or made of plastic material. · In addition, the metal or metal alloy have the form of a film which is applied to a thin strip of paper.

009882/1383 - 24 -

Claims (1)

20 ^ 6044 Claims M,) A lightweight panel made up of assembled parts, characterized in that it contains a filling, which consists of a large number of individual tubular elements (40) of fibrous material, the axially parallel extending and are each arranged in contact with two or more adjacent elements and through Glues or binders are held together. (E.g. Pig. 5) 2. Plate according to claim 1, characterized in that the tubular elements (40) are arranged in superimposed rows, the number of which corresponds to the thickness of the filling certainly. (E.g. Fig. 5) 3. Plate according to claim 1 or 2, characterized in that the length of the tubular elements in their dimension corresponds to one direction. 4. Plate according to one of claims 1 to 3, characterized in that that the individual tubular elements are made by a plurality of elongate means, such as bands, Strips or the like adhering to the elements are held in their parallel position, thereby lending of tubular elements. (E.g. Fig. 11) 5. Plate according to claim 4, characterized in that a Row of interconnected elements with one or more such rows is merged to form a Generate core of predetermined thickness. (E.g. Fig. 11) 6. Plate according to one of the preceding claims, characterized in that the elements before the filling form, soaked or coated with an adhesive that is curable, causing them to adhere and harden, so that the filling forms a composite of hardened elements. 0 09882/1383 7. Plate according to one of the previous claims, thereby characterized in that adjacent rows have one such take mutual position that each tubular element in the space between two cores one or several adjacent rows. (Fig. 16) 8. Plate according to one of the preceding claims, characterized characterized in that on the opposite Each surface of the filling has an outer layer attached is. 9. Process for the production of a lightweight panel according to * one of claims 1 to 8, characterized in that Ribbons or strips of fibrous materialau tubular elements or cores are shaped that the outer The surface of each individual core is coated with a hardenable binder so that the cores are axially parallel be arranged in several layers so that they form a compact cellular *) filling, and that the binding agent is hardened to cement the cores together and to harden. 10. The method according to claim 9, characterized in that the coated cores in an essentially parallel position ([ a horizontally extending conveyor belt (50) are given, which they cover in a predetermined length and to which they run across. (Fig. 2) 11. The method according to A.n.3 claim 10, characterized in that a cover film (60) is applied to the cores, and that the conveyor belt is moved through a press zone (50/52) to compact the filling and through a hardening zone (62, 64, 66; Fig. 6) is moved to bring the grains together to cement. (Fig. 2) - 26 009882/1383 " ^2β " ■ ^ CJ 2 6 ϋ Λ 12, method according to one of claims 9 to 11, characterized t that the cores during their supply to the breaking elements and during their application to the conveyor belt (50) are exposed to vibration (70), (Mg, 2). \ 1'3. Method according to one of Claims 9 'to 12, characterized in that that the part of the conveyor belt (50) to be filled is determined by plates (52) which are transverse to it run and the opposing edges have a profile to the layers of cores in their bring the correct position. (Pig. 2) 14. The method according to claim 9 »characterized in that the Cores which run parallel and are coated with binder are placed between two cover films (74, 76), which in run vertically, with the cover sheets and the core fillings evenly downwards for compression are moved through a pressing zone (80, 82, 84) and through a heating zone for hardening the binder, and that they cut to predetermined lengths after passing through the hardening zone. (Pig. 7) 15. The method according to claim 9 »characterized in that the Cores are introduced into vertical shafts in a substantially parallel position, which are carried by a conveyor belt (90) are formed with vertically extending dividers (92), the spacing of which corresponds to the thickness of the plate, and that the Shafts are filled one after the other while the conveyor belt (90) is at a standstill, and then the hardening zone happen. (Pig. 8) 16. The method according to claim 15 »characterized in that the vertical shafts, after they have passed the hardening zone, are moved in front of a ram (94) which the plate - 27 009 882/13 03 in a direction transverse to the direction of movement of the conveyor belt running direction from the shaft ejects. (Pig. 9) 17t method for the production of a lightweight panel according to Claim 4 »characterized in that bands or strips of fibrous material are formed into tubular cores be that the cores (40) continue in a parallel position are moved, with bands, strips (106) or the like in a direction transverse to their longitudinal direction adhering to them, which the cores in parallel position with each other and thus form core rows that the surfaces of these core rows with hardenable Adhesive are coated that several such core rows are placed on top of each other to the filling and that the adhesive is hardened to cement the cores together and to harden them. (Fig. 12) 18. The method according to claim 17, characterized in that the rows of cores on a horizontally extending conveyor belt (120) are placed on top of each other. (Fig. 13) 19. The method according to claim 17, characterized in that several core rows in a certain mutual position in a vertical shaft can be inserted * (Fig. 19) 20. The method according to any one of claims 17 to 19, characterized in that that the bands or strips are attached to the tubular cores after they are separated from each other have occupied a parallel position spaced apart, and that those located between adjacent cores Parts of the tapes or strips are folded to enlarge the adhesive and flat two tape and core surface to bring the nuclei to touch each other. ÜÜ988 2/13 83 - 28 - 2026Ü44 21. The method according to any one of claims 9 to 20, characterized in that that the interior of the cores is heated for hardening. 22. The method according to claim 21, characterized in that heated air is blown through the interior of the cores. 23. Apparatus for the production of lightweight panels according to claim 1 to 8, characterized in that it has a Device (16, 26, 34, 70) for delivering tubular elements (40) or cores in a parallel position, a painting device (36) for coating the surfaces of the tubular cores with curable adhesive; Elements for arranging a number of axially parallel cores in several layers to form a filling, a pressing device (56) for compressing these layers and a curing device (62, 64, 66; Fig. 6) for curing the on the Contains cores of applied agent. (Fig. 2) 24. The device according to claim 23, characterized in that it contains spaced apart endless belts (50, 56), one of which (50) takes up the layers of cores (40) and the other with pressure rollers for compacting the Layers is provided. (Fig. 2) 25. Apparatus according to claim 24, characterized in that a curing device (62, 64, 66) mounted at a location along the belts (50, 56) beyond the pressure rollers is the one at one end of the tubular cores (40) adjoining air duct (62) and elements (64) to drive warm air axially through the cores. (Fig. 6) 26. The device according to claim 23, characterized in that they have a device (102, 106, 107) for attaching a - 29 - 009882/1383 Tape or a strip to the delivered in a parallel position Contains cores and to the south a number of interconnected cores. (Pig. 12) 27. The device according to claim 26, characterized in that it contains a toothed washer (154) which creates a distance between the parallel cores (HO), which corresponds to the tooth thickness (156) on the periphery and in which the gate direction for attaching the tape (158) then comes into action when the cores are in the offending position. (Pig. 21) 28. The apparatus according to claim 27, characterized in that it includes one or more flanging wheels (164), each fold the part of the tape located between adjacent cores (140) and thus fold adjacent cores into one another Bring touch. (Fig. 21) 29 · Device according to claim 25 »characterized in that a motor-driven air blower is connected to the air duct (62) (64) and a heating device are in operative connection, so that heated air through the interior of the cores (40) can be blown. (Fig. 6) 009882/1383