JP2003515469A - Method and apparatus for edge joining veneer veneers - Google Patents

Abstract

(57) [Summary] At least one edge of the veneer to be joined is coated with a hot melt adhesive, and then the edges of the elements (42, 48) are pressed together before the adhesive solidifies. A method and apparatus for edge joining strip-like veneers or elements (42, 48) by applying a coating to a central area of an associated edge or edges. The method and the apparatus described above are characterized in that the adhesive is applied under completely melted conditions through heating nozzle means (40, 44) such that the adhesive is directed directly as a jet or stream. The support area (2) of the opposite veneer strip (48) is preferably located at a higher level (50) and is preferably partially above the nozzles (40, 44). Using the method and apparatus described above, it is achieved to reduce the total edge area of the veneer element that is heated during adhesive bonding, without causing significant drying effects on the veneer element.

Description

Detailed Description of the Invention

The present invention relates to a method and a device for edge joining plate members made of veneer. Such joints include plate members having a surface that mimics many joined pieces of wood, especially for use in the manufacture of doors, cupboard doors, other furniture, and building components, including floors. It is suitable because it has been found in practice that it is desirable to make it. This makes it possible to produce larger plate members which have a pattern as if they were composed of parquet but which can be joined and supported in a much easier way than using individual blocks.

With this, the cut veneer can be made into a small plate shape and can be put into an equipment capable of performing edge joining of plate pieces. There is a known machine that applies adhesive to the edge surfaces of thin veneer pieces and then presses the edges together, but this technique prevents the adhesive from leaking to the upper edge of the joint. Is almost impossible, which means that the finished plate member needs to be subjected to finishing, so that a reasonable quality standard cannot be achieved.

Another popular technique is to use so-called adhesive filaments, ie fine carrier filaments with a coating of thermoplastic adhesive. The filaments are made to move across the joint in a zigzag fashion on the underside of the plate member, while being pressed against the underside while the adhesive is heat softened. In this method, a kind of suturing of the edge area is performed, which results in both a reasonable bond and a complete removal of the adhesive from the surface.

Although the use of this technique has yielded excellent results, it is likely to be overtaken by ongoing developments. In that development, the veneer thickness is minimized so that even a thin "adhesive thread" will show its thickness when the joined veneer members are placed on the underlying carrier plate. . The filaments stand out as localized protrusions on the veneer surface in the bonding zone. Since it is the carrier filament itself that provides the strength at the juncture, there is a limit to how thin this filament can be, and consequently the filament itself began to stand out in an undesirable manner.

Assuming this background, even a very thin veneer plate piece does not leak adhesive to the upper side of the joining zone, and without providing a joining means for adding thickness to the bottom side, a very thin single plate piece. New thin joining methods have been investigated which can give good edge joints to plates.

From German Patent No. 1026066, it is controlled that the adhesive is placed directly between the edges of the veneer pieces that are brought together, so that the adhesive remains in the joint. It is known to use adhesive filaments which are capable of adjusting the amount of adhesive applied with such precision that there is no problem with leakage. However, heat activated adhesives require heating, which makes them sticky and can interfere with the migration of the filaments. This has been resolved in the publications mentioned above.
In that case, the adhesive filaments are fed in cold non-sticky conditions and activation of the adhesive takes place by heating the entire bonding zone. However, while this technique solves the adhesive problem, it can be overheated until the edge zones of thin veneer strips are excessively dry,
This is practically useless because it creates material blistering and creates a new and serious problem that quickly makes the process completely uncontrollable.

According to the invention, the principle of well-controlled adhesive supply to the edge-bonding zone is maintained, but the external heating of the adhesive ensures that no problems arise with respect to the bonding process and movement of the plate pieces. Done.

German Patent No. 3510147 conveys veneer pieces between each pair of conveyor belts on both sides of the sword, with vertical nozzles arranged at the ends of the sword. Sends hot glue downwards to the carrier belt just below the still open joint between the plate pieces. This belt closes the bottom of the joint and its speed is adjustable, which makes it possible to spread a kind of liquid thread with a controllable thickness just before the final closure of the joint. However, the mouth of the nozzle is located somewhat above the top level of the plate pieces, and due to the narrow space conditions it is difficult to prevent the buildup of adhesive in the top edge area of both plate pieces. Of course, if the adhesive was applied well before the actual joining area where both veneer edges were still wide open, it would be possible to prevent the buildup of adhesion, but in this case The adhesive strip between the zone and the bond zone should be fairly long before the adhesive strip enters the bond zone and the adhesive strip should undergo undesired cooling. Obviously, the reference document for this purpose discloses not only the use of hot glue, but also the use of hot air blown against the extracted glue, which is still undesirable in the context of the present invention.

The invention relating to a method according to the beginning of claim 1 in the claims,
The main feature is the content described in this characterization part. This ensures that the adhesive supplied under already fully heated and softened conditions, and in a metered amount so that there is no excess adhesive at the joints, causes the joint edge area of the veneer piece itself. It is important not to be heated after the application of the adhesive, which should also affect.
The hot adhesive supplied obviously causes some heating of these areas by itself, but this heating concentrates and acts on the adhesive itself before the application of the adhesive, making it very limited. Since it is supplied in a given amount, the overall heating of the edge area will be very limited. Therefore, since heating to the entire edge area does not cause any drying effect on the important wood, the manufacturer can carry out the production without the problems resulting from such drying, and the adhesion on the veneer edge surface. The application of the agent is very accurate.

Even when hot melt or normal temperature adhesive is applied laterally from the nozzle to the edge surface, when the adhesive is directly applied to the edge of the veneer, the veneer is used to create a space for the nozzle. The pieces should be well separated. In the past, this meant that there was a fairly long distance between the coating tip and the area that pressed the veneer edges together. This distance is
Placing the veneer pieces to be delivered to the nozzle area at two different levels, namely above the nozzle and beyond the nozzle top, can significantly reduce the horizontal spacing, thereby eliminating the edge without wiping the adhesive. It is an important aspect of the invention that it can be made extremely small enough to be at the same level. The veneer flexes easily outside and inside of its own plane, thus in this way it is very easy to push the edges laterally together.

[0011]   The present invention will now be described in more detail with reference to the accompanying drawings.

FIG. 1 shows a machine table top 2 on which two veneer pieces 4 to be moved in the direction of the arrow are placed. Another plate piece 4 ′ may be edge-joined to one or both of the plate pieces in advance. These plate pieces are located on both sides below the longitudinally arranged T-rail 6. The top flange of the T-rail is inclined forward. Further forward, the plate piece 4 is a pair of horizontal discs 8 that rotate in opposite directions.
Pass through. These rotating discs 8 carry out a slight compression on the plate pieces 4 by friction with the aid of an upper pressure roller (not shown). Immediately before this stage, the strip passes through the centrally located guide tube 10. The guide tube 10 is a guide
The adhesive filament 12 is discharged through the pointed discharge tip 14 of the tube 10 and carries the adhesive filament 12 to the abutting joint area between the two plate pieces 6. Thereafter, the joined plate pieces pass through one pressure roller 16 and a pair of pull rollers 18.

This device belongs to the prior art, but apart from the system for supplying the adhesive filaments 12, the device is fully usable in connection with the present invention.

One embodiment of the present invention is shown in FIG. 2, in which the adhesive is brought to the joint as a narrow jet 32 of heated liquid adhesive ejected from a nozzle 30 to form a veneer plate. Just before the pieces are brought together, the jet is precisely applied to the edge surface of at least one of the veneer pieces. The supply tube 34 to the nozzle 30 passes through a heating unit 36, which is preferably of the electrical type, which heats the nozzle itself in response to the start after a certain rest period to solidify and bond therein. It is placed near the nozzle 30 so as to melt the agent. The heating unit 36 can also be combined with height adjustment means such as a perimeter adjustment screw 38 to finely adjust the height of the nozzle so that the jet of adhesive 32 strikes its target zone accurately.

It will be appreciated that the adhesive must be supplied to the heating unit 36 at sufficient pressure, presumably in preheated conditions, but this presents technical details that do not require further consideration here. It is considered to be configured. The result is that a directed jet can be established that is as accurate as the use of hot glue filaments.

In FIG. 3, a height-adjustable block 33 can be placed immediately after the end of the T-rail 6, which block has a narrow hole 35 from which a narrow passage 37 is blocked. Is shown leading to the sides of The hole 35 is connected to a vertical channel, which is connected to a magnetic valve 39 to control the supply of adhesive from the hose with adhesive. A heating element (not shown) for locally heating the adhesive supply zone is attached to the tip of the block 33 so that the adhesive becomes completely liquid during application to the veneer edge. Can be The holes 35 can be very narrow, for example 0.2 to 0.4 mm, which allows the adhesive to be applied with high precision to the thin edge surface of the veneer. It is preferable to use pressure rollers or spring fingers at the application site so that the application will be accurate even if the veneer is slightly curved.

In FIG. 4, a nozzle is designated by the reference numeral 40 and a thin laterally oriented nozzle hole 4
4 shows a preferred embodiment made as a small rounded unit with a wall surface 46 with 4. The unit 40 is preferably supported so that its height can be adjusted finely according to the thickness of the veneer to be joined,
In addition, the pivot of the nozzle hole 44 is slightly tilted in the forward movement direction of the veneer, so that the delivery of the adhesive from the nozzle hole is not blocked directly by the relevant veneer edge, so that it can be swiveled. It can also be adjustable in angle for orientation.

As an important feature, one veneer plate piece designated by 48 is on the base 2 and the nozzle
Since it is supported by the carrier plate 50 at a level above the top of the unit 40, the edge of this plate piece is placed over the top of the nozzle unit as shown in FIG. 5 when viewed horizontally. There is. This is because the combination of guiding the plate pieces 48 downward very quickly immediately after applying the adhesive and laterally bringing the plate pieces 42 and 48 together on the base 2 together makes it possible to join them together. It means that the edges of the plate pieces can be juxtaposed close to each other immediately before the application of the adhesive. This is conditional on the fact that the bonding can be carried out immediately after the application of the adhesive, so that the adhesive has a temperature and a consistency which guarantees the efficiency of the edge-bonding operation.

It is shown in FIG. 5 that the wall surface 46 may be arcuate or corrugated so that the veneer edge never blocks ejection or adhesive from the nozzle holes 44.

In this regard, it is important to emphasize that the adhesive supply should be adjusted so that it corresponds to the desired adhesive flow and is carried by the moving veneer edge. Is. The adhesive is simply supplied as a block to the space between the nozzle holes 44 and the associated veneer edge, without any overpressure, so as to meet the desired degree of adhesive coverage of the veneer edge. Therefore, the adhesive is not "sprayed" against the edges of the veneer as shown in FIG. This again becomes a matter of adhesive properties and viscosity, but experts in the relevant art will be able to determine these process parameters in more detail. The product RAKALL M 2000 is likely to be recommended.

This adhesion is achieved by adhering the conveyed adhesive to the relevant veneer edges, all according to the desired amount of adhesive to be applied to the veneer edges, as particularly proposed in FIG. It is possible to achieve a small or large flow fill of the groove 37 with the agent. Of course, the same adhesive can be applied to the more confined space outside the nozzle holes 44 in FIG. 4, even if the associated controlled spacing is established. Adhesive consumption can be rather low, for example in the range of 10 to 50 mg / m, typically about 25 mg / m.

An overall machine according to the invention is schematically illustrated in FIG. The veneer plate pieces enter from both sides of the sword-shaped object 6 in the machine base 2 and pass under the opposing pressure roller 52. The pressure roller 52 may cooperate with the top of a driven roller 54 underneath the platform 2. According to FIG. 4, there is a slightly raised support 50 on one side of the sword. A double roller 56 is placed on the delivery end of the sword 6 and directly above the nozzle 40, and a wide roller 58 is provided on the base 2.
It is placed so as to cooperate with the friction disc 8 of FIG. A wide delivery roller 60 cooperates with a drive roller 62 below.

The rollers are preferably arranged in such a way that they can be pressed downwards against the platform 2, but here the gantry element 68 extends from the right side of the platform 2 onto the platform. Is shown as a collective mount on beam 64 held by pressure cylinder 66. This leaves a space above the pedestal for joining yet another veneer plate piece to the already assembled plate members.

[0024]   More pressure rollers can be provided between rollers 58 and 60.

[Brief description of drawings]

[Figure 1]   It is a schematic perspective view of the joining apparatus for veneer board pieces.

[Fig. 2]   It is a side view of the joining apparatus modified by this invention.

[Figure 3]   FIG. 7 is a detailed perspective view of another modified joining device.

[Figure 4]   1 is a perspective view of a preferred embodiment of the present invention.

[Figure 5]   It is sectional drawing of the nozzle unit.

[Figure 6]   Figure 3 is a perspective view of a complete device according to the invention.

[Procedure for Amendment] Submission for translation of Article 34 Amendment of Patent Cooperation Treaty

[Submission date] November 2, 2001 (2001.11.2)

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] Full text

[Correction method] Change

[Contents of correction]

Title: Method and apparatus for edge joining single veneer plates

[Claims]

Detailed Description of the Invention

The present invention relates to a method and a device for edge joining plate members made of veneer. Such joints include plate members having a surface that mimics many joined pieces of wood, especially for use in the manufacture of doors, cupboard doors, other furniture, and building components, including floors. It is suitable because it has been found in practice that it is desirable to make it. This makes it possible to produce larger plate members which have a pattern as if they were composed of parquet but which can be joined and supported in a much easier way than using individual blocks.

With this, the cut veneer can be made into a small plate shape and can be put into an equipment capable of performing edge joining of plate pieces. There is a known machine that applies adhesive to the edge surfaces of thin veneer pieces and then presses the edges together, but this technique prevents the adhesive from leaking to the upper edge of the joint. Is almost impossible, which means that the finished plate member needs to be subjected to finishing, so that a reasonable quality standard cannot be achieved.

Another popular technique is to use so-called adhesive filaments, ie fine carrier filaments with a coating of thermoplastic adhesive. The filaments are made to move across the joint in a zigzag fashion on the underside of the plate member, while being pressed against the underside while the adhesive is heat softened. In this method, a kind of suturing of the edge area is performed, which results in both a reasonable bond and a complete removal of the adhesive from the surface.

Although the use of this technique has yielded excellent results, it is likely to be overtaken by ongoing developments. In that development, the veneer thickness is minimized so that even a thin "adhesive thread" will show its thickness when the joined veneer members are placed on the underlying carrier plate. . The filaments stand out as localized protrusions on the veneer surface in the bonding zone. Since it is the carrier filament itself that provides the strength at the juncture, there is a limit to how thin this filament can be, and consequently the filament itself began to stand out in an undesirable manner.

Assuming this background, even a very thin veneer plate piece does not leak adhesive to the upper side of the joining zone, and without providing a joining means for adding thickness to the bottom side, a very thin single plate piece. New thin joining methods have been investigated which can give good edge joints to plates.

From German Patent No. 1026066, it is controlled that the adhesive is placed directly between the edges of the veneer pieces that are brought together, so that the adhesive remains in the joint. It is known to use adhesive filaments which are capable of adjusting the amount of adhesive applied with such precision that there is no problem with leakage. However, heat activated adhesives require heating, which makes them sticky and can interfere with the migration of the filaments. This has been resolved in the publications mentioned above.
In that case, the adhesive filaments are fed in cold non-sticky conditions and activation of the adhesive takes place by heating the entire bonding zone. However, while this technique solves the adhesive problem, it can be overheated until the edge zones of thin veneer strips are excessively dry,
This is practically useless because it creates material blistering and creates a new and serious problem that quickly makes the process completely uncontrollable.

According to the invention, the principle of well-controlled adhesive supply to the edge-bonding zone is maintained, but the external heating of the adhesive ensures that no problems arise with respect to the bonding process and movement of the plate pieces. Done.

German Patent No. 3510147 conveys veneer pieces between each pair of conveyor belts on both sides of the sword, with vertical nozzles arranged at the ends of the sword. Sends hot glue downwards to the carrier belt just below the still open joint between the plate pieces. This belt closes the bottom of the joint and its speed is adjustable, which makes it possible to spread a kind of liquid thread with a controllable thickness just before the final closure of the joint. However, the mouth of the nozzle is located somewhat above the top level of the plate pieces and it is difficult to prevent the adhesive buildup in the top edge areas of both plate pieces due to the narrow space conditions. Of course, if the adhesive was applied well before the actual joining area where both veneer edges were still wide open, it would be possible to prevent the buildup of adhesion, but in this case The adhesive strip between the zone and the bond zone should be fairly long before the adhesive strip enters the bond zone and the adhesive strip should undergo undesired cooling. Obviously, the reference document for this purpose discloses not only the use of hot glue, but also the use of hot air blown against the extracted glue, which is still undesirable in the context of the present invention.

According to one aspect of the invention, there is provided a method for edge joining a veneered strip-like plate or sheet element according to claim 1 in the claims. in this case,
Adhesives that are already supplied under fully heated and softened conditions should also affect the joint edge area of the veneer plate itself It is important that the adhesive is not heated after it is supplied. is there. The hot adhesive supplied apparently causes some heating of these areas by itself, but if this heating is concentrated and acts on the adhesive itself before the application of the adhesive, the adhesive becomes very limited. Since it is supplied in a given amount, the overall heating of the edge area will be very limited. Therefore, since the entire heating to the edge area does not cause any drying effect on the important wood, the manufacturer can carry out the production without the problems resulting from such partial drying, the veneer edge surface The application of the adhesive in is very accurate.

Even when hot melt or normal temperature adhesive is applied laterally from the nozzle to the edge surface, when the adhesive is directly applied to the edge of the veneer, the veneer is used to create a space for the nozzle. The pieces should be well separated. In the past, this meant that there was a fairly long distance between the coating tip and the area that pressed the veneer edges together. This distance is
Placing the veneer pieces to be delivered to the nozzle area at two different levels, namely above the nozzle and beyond the nozzle top, can significantly reduce the horizontal spacing, thereby eliminating the edge without wiping the adhesive. It is an important aspect of the invention that it can be made extremely small enough to be at the same level. The veneer flexes easily outside and inside of its own plane, thus in this way it is very easy to push the edges laterally together.

[0011]   The present invention will now be described in more detail with reference to the accompanying drawings.

FIG. 1 shows a machine table top 2 on which two veneer pieces 4 to be moved in the direction of the arrow are placed. Another plate piece 4 ′ may be edge-joined to one or both of the plate pieces in advance. These plate pieces are located on both sides below the longitudinally arranged T-rail 6. The top flange of the T-rail is inclined forward. Further forward, the plate piece 4 is a pair of horizontal discs 8 that rotate in opposite directions.
Pass through. These rotating discs 8 carry out a slight compression on the plate pieces 4 by friction with the aid of an upper pressure roller (not shown). Immediately before this stage, the strip passes through the centrally located guide tube 10. The guide tube 10 is a guide
The adhesive filament 12 is discharged through the pointed discharge tip 14 of the tube 10 and carries the adhesive filament 12 to the abutting joint area between the two plate pieces 6. Thereafter, the joined plate pieces pass through one pressure roller 16 and a pair of pull rollers 18.

This device belongs to the prior art, but apart from the system for supplying the adhesive filaments 12, the device is fully usable in connection with the present invention.

One embodiment of the present invention is shown in FIG. 2, in which the adhesive is brought to the joint as a narrow jet 32 of heated liquid adhesive ejected from a nozzle 30 to form a veneer plate. Just before the pieces are brought together, the jet is precisely applied to the edge surface of at least one of the veneer pieces. The supply tube 34 to the nozzle 30 passes through a heating unit 36, which is preferably of the electrical type, which heats the nozzle itself in response to the start after a certain rest period to solidify and bond therein. It is placed near the nozzle 30 so as to melt the agent. The heating unit 36 can also be combined with height adjustment means such as a perimeter adjustment screw 38 to finely adjust the height of the nozzle so that the jet of adhesive 32 strikes its target zone accurately.

It will be appreciated that the adhesive must be supplied to the heating unit 36 at sufficient pressure, presumably in preheated conditions, but this presents technical details that do not require further consideration here. It is considered to be configured. The result is that a directed jet can be established that is as accurate as the use of hot glue filaments.

In FIG. 3, a height-adjustable block 33 can be placed immediately after the end of the T-rail 6, which block has a narrow hole 35 from which a narrow passage 37 is blocked. Is shown leading to the sides of The hole 35 is connected to a vertical channel, which is connected to a magnetic valve 39 to control the supply of adhesive from the hose with adhesive. A heating element (not shown) for locally heating the adhesive supply zone is attached to the tip of the block 33 so that the adhesive becomes completely liquid during application to the veneer edge. Can be The holes 35 can be very narrow, for example 0.2 to 0.4 mm, which allows the adhesive to be applied with high precision to the thin edge surface of the veneer. It is preferable to use pressure rollers or spring fingers at the application site so that the application will be accurate even if the veneer is slightly curved.

In FIG. 4, a nozzle is designated by the reference numeral 40 and a thin laterally oriented nozzle hole 4
4 shows a preferred embodiment made as a small rounded unit with a wall surface 46 with 4. The unit 40 is preferably supported so that its height can be adjusted finely according to the thickness of the veneer to be joined,
In addition, the pivot of the nozzle hole 44 is slightly tilted in the forward movement direction of the veneer, so that the delivery of the adhesive from the nozzle hole is not blocked directly by the relevant veneer edge, so that it can be swiveled. It can also be adjustable in angle for orientation.

As an important feature, one veneer plate piece designated by 48 is on the base 2 and the nozzle
Since it is supported by the carrier plate 50 at a level above the top of the unit 40, the edge of this plate piece is placed over the top of the nozzle unit as shown in FIG. 5 when viewed horizontally. There is. This is because the combination of guiding the plate pieces 48 downward very quickly immediately after applying the adhesive and laterally bringing the plate pieces 42 and 48 together on the base 2 together makes it possible to join them together. It means that the edges of the plate pieces can be juxtaposed close to each other immediately before the application of the adhesive. This is conditional on the fact that the bonding can be carried out immediately after the application of the adhesive, so that the adhesive has a temperature and a consistency which guarantees the efficiency of the edge-bonding operation.

It is shown in FIG. 5 that the wall surface 46 may be arcuate or corrugated so that the veneer edge never blocks ejection or adhesive from the nozzle holes 44.

In this regard, it is important to emphasize that the adhesive supply should be adjusted so that it corresponds to the desired adhesive flow and is carried by the moving veneer edge. Is. The adhesive is simply supplied as a block to the space between the nozzle holes 44 and the associated veneer edge, without any overpressure, so as to meet the desired degree of adhesive coverage of the veneer edge. Therefore, the adhesive is not "sprayed" against the edges of the veneer as shown in FIG. This again becomes a matter of adhesive properties and viscosity, but experts in the relevant art will be able to determine these process parameters in more detail. The product RAKALL M 2000 is likely to be recommended.

This adhesion is achieved by adhering the conveyed adhesive to the relevant veneer edges, all according to the desired amount of adhesive to be applied to the veneer edges, as particularly proposed in FIG. It is possible to achieve a small or large flow fill of the groove 37 with the agent. Of course, the same adhesive can be applied to the more confined space outside the nozzle holes 44 in FIG. 4, even if the associated controlled spacing is established. Adhesive consumption can be rather low, for example in the range of 10 to 50 mg / m, typically about 25 mg / m.

An overall machine according to the invention is schematically illustrated in FIG. The veneer plate pieces enter from both sides of the sword-shaped object 6 in the machine base 2 and pass under the opposing pressure roller 52. The pressure roller 52 may cooperate with the top of a driven roller 54 underneath the platform 2. According to FIG. 4, there is a slightly raised support 50 on one side of the sword. A double roller 56 is placed on the delivery end of the sword 6 and directly above the nozzle 40, and a wide roller 58 is provided on the base 2.
It is placed so as to cooperate with the friction disc 8 of FIG. A wide delivery roller 60 cooperates with a drive roller 62 below.

The rollers are preferably arranged in such a way that they can be pressed downwards against the platform 2, but here the gantry element 68 extends from the right side of the platform 2 onto the platform. Is shown as a collective mount on beam 64 held by pressure cylinder 66. This leaves a space above the pedestal for joining yet another veneer plate piece to the already assembled plate members.

[0024]   More pressure rollers can be provided between rollers 58 and 60.

[Brief description of drawings]

[Figure 1]   It is a schematic perspective view of the joining apparatus for veneer board pieces.

[Fig. 2]   It is a side view of the joining apparatus modified by this invention.

[Figure 3]   FIG. 7 is a detailed perspective view of another modified joining device.

[Figure 4]   1 is a perspective view of a preferred embodiment of the present invention.

[Figure 5]   It is sectional drawing of the nozzle unit.

[Figure 6]   Figure 3 is a perspective view of a complete device according to the invention.

[Procedure Amendment 2]

[Document name to be corrected] Drawing

[Name of item to be corrected] Fig. 4

[Correction method] Change

[Contents of correction]

[Figure 4]

[Procedure 3]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 5

[Correction method] Change

[Contents of correction]

[Figure 5]

[Procedure amendment 4]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 6

[Correction method] Change

[Contents of correction]

[Figure 6]

─────────────────────────────────────────────────── ─── Continued front page    (81) Designated countries EP (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, I T, LU, MC, NL, PT, SE, TR), OA (BF , BJ, CF, CG, CI, CM, GA, GN, GW, ML, MR, NE, SN, TD, TG), AP (GH, G M, KE, LS, MW, MZ, SD, SL, SZ, TZ , UG, ZW), EA (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM), AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, B Z, CA, CH, CN, CR, CU, CZ, DE, DK , DM, DZ, EE, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS, J P, KE, KG, KP, KR, KZ, LC, LK, LR , LS, LT, LU, LV, MA, MD, MG, MK, MN, MW, MX, MZ, NO, NZ, PL, PT, R O, RU, SD, SE, SG, SI, SK, SL, TJ , TM, TR, TT, TZ, UA, UG, US, UZ, VN, YU, ZA, ZW

Claims (6)

[Claims] 1. A veneer by applying hot melt adhesive to at least one of the veneer edges to be joined, and then pressing the edges together of the elements together before the adhesive sets. A method for edge-joining strip-shaped plate or sheet elements, wherein the applied adhesive is directed directly as a jet or stream to a central area of the edge or edges concerned. A method of applying the adhesive under the condition of being completely melted through the heating nozzle means configured as described above. 2. When the veneer plate pieces move forward side by side while passing through the adhesive application station, first with side-by-side laterally narrow spacing between adjacent veneer edges, with some narrowing. The veneer pieces are joined together by pressing the edges together, and the opposing veneer pieces are relatively laterally spaced apart as the pieces pass through the adhesive application station. At least one of which is guided or supported in such a way that it is also vertically spaced to the extent that it can pass through a nozzle element, which can be wider than the lateral spacing between the edges, after which the plate pieces are brought to a common level. Guided and pressed together to join the edges of the plate pieces.
The method described in. 3. Adhesive is applied to one edge of the veneer through a heated nozzle that directly contacts the edge of the veneer, thereby typically about 25 mg per edge meter.
The method of claim 1, wherein the adhesive is provided at a flow rate such that it is ejected from a nozzle to deposit a desired layer thickness on the veneer edge in an amount of. 4. Means for continuously pressing the veneer plate pieces conveyed in parallel, and means for supplying an adhesive to at least one of the edges of the two plate pieces to be joined. 2. An apparatus comprising means for carrying out the method of claim 1 having means and adapted to function with an adhesive of the type activated by cooling from a heated state. A means comprises a heating nozzle configured adjacent the support area of the veneer plate edge so as to deliver a jet or stream of hot adhesive directly to the central area of the edge surface of the veneer plate piece. An apparatus for performing the method of claim 1, comprising: 5. The nozzle is located immediately adjacent to the conveyance path at the edge of the veneer.
The device according to. 6. The supporting area of the opposite edge of the veneer plate is located at a higher level,
Device according to claim 4, preferably located partially above the nozzle.