DE8521730U1 - Composite panel - Google Patents

Description

y Gfest & uysfen & .v & ft.Röhf

The invention relates to a composite panel with a core panel * Cover plate ^ preferably glued on top of the core plate a high pressure laminate board (HPL board, DIN 16926), one on the edge of the core plate glued-on edge strips and a protective film or the like glued on to the underside of the core plate, in particular in the form of a high-pressure laminate board, where, preferably, the KöfTipiätte aiii Rand äbySrüfiuet is UHu yyf. θιΠΘΠ over the OberSSitS SUf = has protruding edge bead, wherein, preferably, the cover plate to form the edge strip from the top around the edge of the core plate, is preferably pulled around up to the underside of the core plate and wherein on the underside of the core plate at a certain distance from Edge provided a drip groove running essentially parallel to the edge is.

In the case of the composite panels, which have been known in principle for a long time The core board is usually a wood chipboard, pressed wood board or the like. In principle, however, natural wood boards are also used as core boards or plates made of other materials, for example plastic, are conceivable. A cover plate is regularly on the top of a core plate glued on, which is usually a laminate board, mostly around a high pressure laminate board (HPL board according to DIN 16926), acts. However, other materials are also used here, for example thermosetting or thermoplastic plastics, veneer wood or metal, known for different applications. In any case, it is essential that the cover plate is water-resistant and heat-resistant, since the cover plate on the top of the core plate usually bores a work surface otherwise stressed surface of the composite panel is formed. A protective film or the like is usually glued onto the underside of the core plate. Instead of a protective film, a cover plate of the type explained above or of a similar type can also be glued onto the underside. This protective film or cover plate on the underside of the core plate also serves to protect the core plate against the effects of moisture and / or heat.

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With composite panels of the type in question, rounded edges or upper edges and possibly also lower edges have been of interest for a long time - on the one hand from ergonomic aspects and aspects of the risk of injury, on the other hand from optical aspects (Softline decor). With some composite panels, especially composite panels that are used as countertops for kitchens, bathrooms, laboratories or the like, as well as cover panels and window sills, the upper edge of the core panel is abruriuuny and the cover panel is pulled around to form the edge strip down to the underside of the Core plate additional Γ) importance. This is not only useful for visual reasons, but is particularly advantageous when handling water, since it avoids glue joints for the ingress of water or moisture on the upper edge and possibly also the lower edge of the composite panel. In addition, in composite panels of this type there is also often a bead protruding over the top of the cover panel, which serves as a water drainage protection.

The known composite panel, which was explained at the beginning and of the the invention proceeds (DE-OS 33 08 947), is now characterized by that a drip groove running essentially parallel to the edge is provided on the underside of the core plate at a certain distance from the edge is. This embodiment of the known composite panel takes into account the fact that water runs down the edge of the composite panel by no means naturally drips off at the lower edge. Due to the adhesive effect of water, water droplets have a tendency to from running inward of the lower edge of the composite panel on the underside. This tendency is particularly pronounced when using detergent relaxed water, as its adhesive effect is quite extraordinary is great. This is extremely uncomfortable for composite panels, since the underside of the composite panels is particularly prone to the ingress of moisture is prone to. In addition, water droplets running inward on the underside of the composite panel lead to accumulations of water in kitchen furniture and for swelling of unprotected wooden parts. By running parallel to the edge of the

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The drip groove running along the cork plate is intended to allow the water droplets to drip off be forced here.

In order to achieve the effect explained above, in the case of the known composite panel the drip groove formed in a profile strip made of a thermoplastic, moisture-repellent plastic. The cross section of the drip groove in the profile strip is semicircular or rectangular, so that between the lower edge of the aligned with the underside of the core plate Profile strip and the side of the drip groove have a drip edge that is as sharp as possible is formed. The profile strip itself is glued into a rectangular, groove-like recess in the core plate and on its lower edges Edge side with either the cover plate drawn around the edge of the core plate and / or the protective film or protective film glued to the underside. Glued cover plate. It is true that the cover plate is created in this way through the direct connection or protective film or the like / profile strip made of thermoplastic material, a glue joint cover plate or protective film that is susceptible to the ingress of moisture / Core board, in particular chipboard, avoided, but the manufacturing effort for this composite board is comparatively high. That is due on the one hand to the profile strip to be provided separately, and on the other hand to the necessary precision in the manufacture of the recess in der Kernp]> atte, since there is always an absolutely exact alignment of the lower edge of the Profile strip with the bottom of the core plate is required. In addition, there is a risk that drops of water running inwards will hit the drip groove "skip" in the profile bar, surprisingly large. This danger can only be countered by widening the drainage groove, which in turn leads to a considerable increase in the size of the profile strip and an increase in manufacturing costs.

The invention is based on the prior art explained above the underlying task of designing and developing the known composite panel with a drip groove running on the underside * that it is considerably simpler in terms of production technology and at the same time provides better protection against the ingress of water droplets on the underside the composite panel.

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The composite panel according to the invention, in which the above task is solved, is characterized in that the dripping groove directly is introduced into the core plate that the cover plate pulled around to the underside of the core plate and / or the glued on the underside Protective film or the like are drawn into the drip groove as far as possible and that of the cover plate and / or the protective film dreary Like. Uncovered area of the drip groove including the

κ free edges of the cover plate and / or the protective film or the like. Of a

Sealing strip is covered moisture-proof. First of all, it is essential Q that in the composite panel according to the invention, the drip not in üine own profile strip made of thermoplastic material, but is introduced directly into the core plate. The surfaces of the drip groove are thus initially not protected against moisture penetration. According to the invention, this protection is provided by the wrapping on the underside of the core plate Cover plate and / or by the glued-on protective film or the like itself, namely as far as possible pulled into the drip groove. How far these can be drawn into the drip groove depends on the geometric shape and the Dimensions of the drip groove, the thickness of the cover plate or the protective film or the like and also of manufacturing considerations. Essential is that the cover plate and / or the protective film or the like. Cover the surfaces of the drip groove as much as possible, so glued onto them are. The remaining area of the drip groove that is neither covered by the cover plate nor by the protective film or the like, which is normally located on the The lowest point of the drip groove is located, is covered with a sealing strip moisture-proof, in such a way that the free edges of the Cover plate and / or the protective film or the like are covered by this sealing strip. This is reset in the drip tray and with it built-in composite panel normally arranged practically invisible to the sealing strip. That in turn gives the possibility of this sealing strip to be designed unhindered by design considerations purely according to application-technical aspects, in particular for an optimal one Lay out moisture proofing.

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In the case of the composite panel according to the invention, the entire expense is eliminated was associated with the known use of a profile strip. In addition, by dispensing with the profile strip, you gain considerable freedom of design in the design of the drip groove, in particular when choosing the width of the drip groove at the level of the underside of the core plate or Composite panel. This in turn means that the width of the drip groove is so it can be chosen that a skipping of the dripping groove by water droplets is excluded.

There are a number of possibilities for embodying the teaching of the invention and further training. Examples of these possibilities as well as working examples for a composite panel designed according to the invention are explained in more detail below with reference to the drawing. In the Drawing shows

1 shows an embodiment of a composite panel in vertical section,

Fig. 2 is a fragmentary, vertical section, the area of the drip groove in a composite panel, but in a second embodiment a composite panel and

3 shows a piece in a perspective view obliquely from below

a composite panel according to FIG. 1. %>

The composite panel shown in Fig. 1 initially has a core panel 1, in the illustrated embodiment a chipboard, a cover plate 2 glued to the top of the core plate 1, in the illustrated preferred Embodiment of a high pressure laminate board (HPL board, DIN 16926), an edge strip glued to the edge 4 of the core plate 1, not provided with a separate reference number, and one on the Underside of the core plate 1 glued-on protective film 3 or the like, in here illustrated embodiment also in the form of a high pressure laminate plate on. For these basic parts of the presented

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At the beginning of the general part of the description, bundplatte is quite a bit has been explained, reference may be made to these explanations.

The illustrated embodiment of a composite panel relates to a particularly preferred embodiment of a composite plate, since the core plate 1 is rounded here at the edge 4 and one over the top has protruding edge bead 5 and as the cover plate 2 to form the edge strip from the top around the edge of the core plate 1 up to the underside of the core plate 1 is pulled around. Also on the underside of the core plate, this is rounded off in the area of the lower edge 6.

Fig. 1 now clearly shows that on the underside of the core plate 1 in a certain distance from the edge 4 a substantially parallel to the edge 4 running drip groove 7 is provided. The distance between the drip groove 7 from the edge 4 of the core plate 1 is usually between 10 mm and 50 mm. The cover plate 2 and, in the exemplary embodiment shown here, also the In the exemplary embodiment shown here, protective films 3 actually have a thickness between 0.5 mm and 1.2 mm, preferably approx. 0.8 mm, see above that the representation in Fig. 1, assuming a total thickness of the core plate 1 of about 36 mm, is exaggerated.

Fig. 1 makes it particularly clear that the drip groove 7 directly into the (j core plate 1 is introduced, that the cover plate 2 drawn around to the underside of the core plate 1 on the one hand and that on the underside Glued-on protective film 3 in the form of a further cover plate on the other hand are drawn into the drip groove 7 as far as possible and that the by the cover plate 2 and the protective film 3 not covered area of the drip groove 7 including the free edges of the cover plate 2 and the Protective film 3 is covered by a sealing strip 8 in a moisture-proof manner. The sealing strip 8 is, as' Fig. 1 in connection with FIG. 3 very much makes clear, set back in the drip groove 7, so that it is normal- ! is not recognizable when the composite panel is installed. Consequently the * sealing strip 8 can be unaffected by design considerations purely from an application point of view, in particular with regard to optimal moisture protection can be selected and designed *

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Fig. 2 shows a further embodiment of a composite panel in sections in the area of the drip groove 7, so that some particular aspects of the invention can be explained particularly clearly with the aid of this figure permit.

According to a preferred teaching of the invention, the drip groove 7, as shown in FIG. 2, has an overall approximately trapezoidal cross-section. At least such a training should be made for the edge 4 of the core plate 1. An approximately triangular cross-section of the drip groove 7 also appears expedient. In any case, it is essential that the sides of the drip groove 7 do not run parallel to one another. This results in that the dripping groove 7 is narrower at their lowest point as the level of the bottom of the core plate 1 or aer composite panel. This benefits the drip effect, as will be explained in more detail later.

Fig. 2 clearly shows that in the preferred embodiment shown here on the two non-parallel sides 11 of the drip groove 7 substantially to the bottom 10 of the drip groove 7, the cover plate 2 or the Protective film 3 can be glued on. This final state is shown in FIG. 2 in dashed lines Lines. In solid lines, FIG. 2 shows an intermediate manufacturing step, namely an intermediate step in which protruding free ends 9 of the cover plate 2 and the protective film 3 are not yet glued to the sides 11 of the drip groove 7. By appropriate and Forming tools known per se, these protruding ends 9 are then bent into the drip groove 7 and with the sides 11 of the drip groove 7 glued. Finally, the sealing strip 8 is then on the bottom 10 of the Dropping groove 7 introduced, which is also shown in dashed lines. Whether the protruding ends 9 of the cover plate 2 and the protective film 3 are glued simultaneously with the corresponding sides 11 of the drip groove 7 or one after the other, depends on the respective production process the composite panel as a whole.

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According to a preferred teaching of the invention, the inner base angle is between two the bottom 10 and the side 11 or both sides 11 of the drip groove 7 close to the edge 4 of the core plate 1 between 150 ° and 120 °, preferably about 135 °. In Fig. 1, which shows an embodiment of a composite panel shows, the drip groove 7 has the cross-section of a curvilinear trapezoid, the inner base angle is approximately 120 °. In contrast, is the inner base angle in the drip groove 7 shown in FIG the cross section of a straight trapezoid about 135 °, wös an outer one Corresponds to a base angle of about 45 °. That is a very good compromise between the production-related desire for a flat as possible Abtropfnut 7 and the application-technical desire for one as possible deep drip groove 7.

The exemplary embodiments shown in the figures show particularly preferred embodiments of composite panels according to the invention, since the transition areas between the underside of the core plate 1 and the drip groove 7 are rounded here. The radii of curvature are expediently corresponding to that of the material of the cover plate 2 or the protective film 3 or the like. Realizable minimum rounding radii matched. While the minimum rounding radii are realized in FIG. 1, in FIG. 2 the transition areas with larger rounding radii are rounded.

The rounding of the transition areas between the underside of the core plate 1 and the drip groove 7 is based on the surprising finding that in contrast to the prior art, a sharp drip edge on the Drip groove 7 is not necessary if the drip groove 7 is wide enough overall. Then in every case there is a dripping inwards running water droplets, due to the width of the drip groove 7 this does not skip the drip groove 7.

Fig. 1 shows a particularly preferred exemplary embodiment Composite panel that; is characterized in that the radius of curvature in the transition areas between the underside of the core plate 1 and

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the drip groove 7 is approximately equal to the radius of the circular portion of the transition area between the underside of the core plate 1 and the edge 4 is. This is Particularly expedient in terms of production technology and design. For the rest, the solution from FIG. 1 corresponds to this construction Cross-section of a curvilinear trapezoid or possibly also a curvilinear triangle with sides of the drainage groove that are rounded up to the bottom 10 7th

With regard to the dimensions of the drip groove 7 and / or the sealing strip 8 There is of course a considerable range of variation, which also depends essentially on the thickness of the core plate 1, the cover plate 2, the protective film 3 Od. Like. And the distance of the drip 7 from the edge 4 depends. Both Dimensions specified at the beginning or similar, it has proven to be particularly useful that the depth of the drip groove 7 between δ mm and 16 mm, preferably between 8 mm and 14 mm, in particular about 10 mm to 12 mm, and / or that the width of the drip groove 7 on the floor between 2 mm and 10 mm, preferably between 4 mm and 8 mm, in particular 5 mm to 6 mm, and / or that the maximum thickness of the sealing strip 8 between 1 mm and 5 mm, preferably about 2 mm to 3 mm. The width of the drip groove 7 on the bottom 10 is in a certain interrelationship on the one hand with the depth of the drip groove 7, on the other hand with the inner base angle between the bottom 10 and the sides 11. As in FIG. 2 clearly shows that, for manufacturing reasons, the protruding free ends 9 of the cover plate 2 and the protective film 3 should be in front Do not glue the sides 11 of the drip groove 7 to one another to make the system come. In addition, the dimensions of the drip groove 7, which were previously highlighted as being particularly preferred, have proven to be particularly expedient through tests proven to be a safeguard against water droplets jumping over.

With regard to the design of the sealing strip 8 is above has already been explained that, due to the geometric design of the composite panel according to the invention, this is practically solely based on application technology Aspects can be selected and designed. Particularly

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It is recommended that the sealing strip Ö made of plastic ■, preferably made of an injectable plastic, in particular made of polyurethane or the like, and is preferably designed as an injection-molded sealing bead. The injection molding of the sealing strip 8 as a sealing bead made of polyurethane can hardly be guaranteed with very high dimensional accuracy because of the material properties of polyurethane. But this is not a problem because of the "recessed" arrangement of the DiCntStrSifSnS 8 äüCri.

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Claims (10)

'. · GfesWuyiseci & jfonRohr. 1.Composite panel with a core panel, a cover panel glued to the top of the core panel, preferably a high-pressure laminate panel (HPL panel, DIN 16926), an edge strip glued to the edge of the core panel and a protective film or the like glued to the underside of the core panel ., in particular in the form of a high-pressure laminate board, wherein, preferably, the core board is rounded at the edge x-λ det and possibly has an edge bead protruding over the top, wherein, preferably, the cover plate to form the edge strip from the top around the edge of the core plate, preferably down to the bottom the core plate is pulled around and on the underside of the core plate at a certain distance from the edge a substantially parallel A drip groove loading to the edge is provided, characterized in that that the drip groove (7) is introduced directly into the core plate (1), that the drawn around to the underside of the core plate (1) Cover plate (2) and / or the protective film (3) or the like glued on the underside is drawn into the drip groove (7) as far as possible and that the area of the drip groove (7) not covered by the cover plate (2) and / or the protective film (3) or the like the free edges of the cover plate (2) and / or the protective film (3) Q or the like is covered moisture-tight by a sealing strip (8). 2. Composite panel according to claim 1, characterized in that the drip groove (7) at least towards the edge (4) of the core plate (1), but preferably overall, approximately trapezoidal or triangular in cross-section is and that on the two non-parallel sides (11) of the drip groove (7) essentially to the bottom (10) of the drip groove (7) the cover plate (2) and / or the protective film (3) or the like. Are glued on. 3. Composite panel according to claim 2, characterized in that the inner Base angle between the bottom (10) and the edge (4) of the core plate (1) - 1 I · «· 4 M I HIl HII
ti i * H »I • ti · i * t 4 ", '· Q & sfrmyaen SIt) KRohr near side (11), preferably both sides (11), of the drip groove (7) between 150 ° and 120 °, preferably about 135 °. 4. Composite panel according to one of claims 1 to 3, characterized in that that the transition areas between the underside of the core plate (1) and the drip groove (7) are rounded, preferably corresponding to that with the material of the cover plate (2) or the protective film (3) or the like. Realizable minimal rounding radii. 5. Composite panel according to claim 4, characterized in that the radius of curvature in the transition areas between the underside of the core plate (1) and the drip groove (7) approximately equal to the radius of curvature of the transition area between the underside of the core plate (1) and the edge (4). 6. Composite panel according to claim 4 or 5, characterized in that P the sides of the drip groove (7) are rounded as a whole down to the bottom (10). 7. Composite panel according to one of claims 1 to 6, characterized in that that the depth of the drip groove (7) between 6 mm and 16 mm, preferably between 8 mm and 14 mm, in particular about 10 mm to 12 mm. 4?
' 8. Composite panel according to one of claims 1 to 7, characterized in that Cy ,, that the width of dripping groove (7) is between 2 mm at the bottom and 10 mm ^, upstream% preferably between 4 mm and 8 mm, in particular 5 mm to 6 mm, is. 9. Composite panel according to one of claims 1 to 8, characterized in that that the maximum thickness of the sealing strip (8) is between 1 mm and 5 mm, preferably about 2 mm to 3 mm. 10. Composite panel according to one of claims 1 to 9, characterized in that that the sealing strip (8) made of plastic, preferably from an injection-molded j§ capable plastic, in particular od polyurethane. The like., Is and is preferably designed as an injection-molded sealing bead.