DK1719851T3

DK1719851T3 - FOLDABLE PANEL WITH ADHESIVE ZONE

Info

Publication number: DK1719851T3
Application number: DK06290741.5T
Authority: DK
Inventors: Claus Stass
Original assignee: Siniat
Priority date: 2005-05-06
Filing date: 2006-05-05
Publication date: 2017-08-21
Also published as: EP1719851B1; PL1719851T3; ES2627811T3; EP1719851A3; EP1719851A2

Description

DESCRIPTION

The invention relates to plasterboards with a cardboard lining or similar material boards which are provided at least on one side with cardboard and serve to equally form an inner corner and an outer corner (90°) by means of a transverse section milled in a particular manner, which boards can be fixed immediately with precision by means of an embedded specific profile of glued plastic or similar profiles of metal or other materials, which are provided with an adhesive tape or with other adhesive bonding means, and which also at the same time afford the possibility of additionally gluing in a durable manner the angle thus formed with a traditional glue, the outer appearance of the corner from the point of view of the sharpness of the edge not differentiating in any way with respect to the traditional preformed parts which are milled in a V shape.

To date, the traditional preformed parts in the form of plasterboards with a cardboard lining or similar material boards have a V-shaped slot corresponding to the size of the angle to be produced. Gluing takes place either with glues and suitable devices at the manufacturers which also produce the V-shaped slot or on site with traditional glues or by adhering double-sided adhesive tape in the V-shaped slot, for example as described in DE19809606A1. The disadvantages are that, depending on the size and the shape of the preformed parts to be produced, the preformed parts which are glued at the manufacturer require, where appropriate, a large volume during transport, run a considerable risk of breakage, or that, during gluing on site, the appropriate conditions for producing rational and precise gluing are not satisfied. Even the solutions consisting in inserting a double-sided adhesive tape which have been proposed to date by the manufacturers of preformed parts do not have the following characteristics of the invention described here, namely the prior precise fixing and the observance of the predefined angle with the use of a double-sided adhesive tape without a foam layer and the additional durable simultaneous gluing of the angular assembly with traditional glues which, in principle, largely exceed the method of adhering with a double-sided adhesive tape from the point of view of the robustness of the assembly, and also the formation of the outer edge in the form of a sharp edge as is the case for the traditional preformed parts milled in a V shape, and finally, for the first time, by virtue of the particular shape of the milling, the application of the preformed part as an inner corner without a gaping joint of variable opening, with at the same time simplified gluing of this inner corner given that, with this method, by metering the glue in the prescribed manner, the latter cannot escape from the joint on account of the two chambers. DE8128252U describes a construction panel in the form of a plasterboard or a similar material board provided with a lining on each side with a cutout on one side, which cutout makes it possible to fold over the parts of the panel on either side of the cutout, wherein a profile is fixed in the cutout, and an adhesive material is applied to the profile.

The object of the invention is to create preformed angle parts of different sizes and shapes from a plasterboard with a cardboard lining or a similar material board, which can then be rigidly connected by adhesive bonding using a bonding region arranged in a particular manner.

The invention is explained hereinafter with the aid of the drawings below which represent a first embodiment (Figures 1 to 5) not in accordance with the invention and a second embodiment (Figures 6 to 9) in accordance with the invention:

Figure 1 shows a perspective representation, in the flat state, of the milling with the profile inserted;

Figure 2 shows a perspective representation, in a state folded at 90°, of the milling with the profile inserted;

Figure 3 shows a cross section of the board in the unfolded, flat, position;

Figure 4 shows a section of the board in the folded position;

Figure 5 shows a section of the inserted profile;

Figure 6 shows a cross section, in the flat state, of the milling according to the second embodiment without the profile inserted;

Figure 7 shows a cross section, in a state folded at 90°, of the milling according to the second embodiment without the profile inserted;

Figure 8 shows a cross section, in a state folded at 90°, of the milling according to the second embodiment with the profile inserted;

Figure 9 shows a cross section, in a state folded at 90°, of the milling according to the second embodiment with the profile inserted, the profile being a variant of that shown in Figure 8; and

Figure 10 shows an enlargement of the region 'A' of the outer corner of the angle piece shown in Figure 9.

The problem is solved - as is illustrated by Figures 1 to 5 -in that a plasterboard 1 with a lining (cardboard) or a similar material board has formed therein a cutout in the form of a rectangular milling 7 reaching approximately to the centre of the board, and in that there is arranged in one of the sides of this milling another, triangular milling 6 extending virtually to the opposite edge of the board without completely passing through the board, and in that an adhesive material 5 is applied to the other side of the rectangular milling.

In a first embodiment not in accordance with the invention, the L-shaped profile 8, which is provided on one side with a double-sided adhesive tape 5, is glued in the milled slot 4 of the plasterboard. Longitudinal slots arranged in the profile, which absorb in a regular manner the applied glue and ensure good adherence of the profile with the glue, afford optimum distribution and adherence of the glue on the milled plaster surfaces. After having previously removed the cover film from the double-sided adhesive tape 5, the folding-over of the sides of the plaster lining board towards one another immediately affords a rigid adhesive bonding by contact between the cardboard-covered surface 2 with which the plasterboard with lining (cardboard) is provided and the surface of the adhesive tape.

The adhesive bonding of the two fold portions is ensured by the fact that the rear face of the cardboard with which the board is provided is used as an ideal adhesive surface for the adhesive bonding using a double-sided adhesive tape. The use alone of an adhesive tape without a foam layer constitutes the basis for making it possible for the first time to fix in a precise and invisible manner with an exact angle a preformed part as described in the intended form, this occurring immediately after the removal of the cover film from the double-sided adhesive tape and the folding of the fold portions, while thus obtaining an angular precision such as that obtained at the manufacturer or with methods which reguire substantially more outlay in terms of time and devices, and additionally makes it possible at the same time to glue in a permanent and solid manner the angle assembly with traditional glues applied in the V-shaped front region of the slot 6.

Moreover, the preformed part thus produced also serves as an inner corner given that there is no open joint.

Figures 6 to 10 illustrate a second embodiment in accordance with the invention, by contrast with that represented in Figures 1 to 5.

The board 11 is a plasterboard or similar material board with a lining 12, 13 on both sides, such as a cardboard lining. The board 11 is similar to that of the first embodiment described, but the cutout and the profile adhesively bonded therein are modified, as will be described in more detail hereinbelow.

As in the first embodiment, the cutout takes the form of a rectangular milling 17 in whose bottom there is additionally formed a triangular milling 16. However, the triangular milling 16 passes entirely through the material of the board 11 and opens onto the surface, but without extending into its lining. Consequently, the lining 13 holds together the two sides of the board 11 on either side of the cutout.

The profile 18 performs the same functions as the profile 8 of the first embodiment. However, instead of being simply in the form of an L, the end of the L of the profile 18 is extended by a slanting part 28 which is glued against one side of the triangular milling 16 and which extends to the level of the surface of the board. The profile 18 also bears a double-sided adhesive tape - not shown - as in the case of the first embodiment: the latter can extend in the L-shaped part only or additionally extend over the slanting part 28. An adhesive tape specific to the L-shaped part and another specific to the slanting part 28 can also be provided. If the slanting part 28 is not provided with an adhesive tape, it can be glued on site just before formation of the angle piece by folding the board 11. In a variant, the profile 18 is replaced by a first L-shaped profile similar to the profile 8 and a separate second flat profile which corresponds to the slanting part 28.

After having removed the cover film from the double-sided adhesive tape and folded the board 11 to form the angle piece, the slanting part 28 is sandwiched between the two sides of the triangular milling 16 and its free end forms the outer corner of the angle piece. The slanting part 28 thus constitutes an element for reinforcing and protecting the outer corner of the angle piece. The angle piece can thus meet the requirements of standard DTU 25-41 without having to add on additional elements for reinforcing the corner once the board has been folded into an angle piece, as is the case in the prior art.

The outer corner exhibits a perfect degree of sharpness by forming a salient edge at the free end of the slanting part 28. In a variant, the free end of the slanting part 28 can be rounded as shown in Figure 9.

The profile 18 can be made of metal, for example of galvanized metal, or of a plastic chosen to be sufficiently hard to provide the desired reinforcement for the corner of the angle piece. It is glued in the cutout with any suitable glue such as a special glue for galvanized metal.

The thickness of the slanting part 28 just as for the rest of the profile 18 is preferably chosen with a value which can range from 0.6 to 1.5 mm. The width 'a' of the slot formed by the triangular milling 16 on the surface of the board 11, and more generally the dimensions of the triangular milling 16, are determined in correspondence to the thickness of the slanting part 28, and likewise the dimensions of the rectangular milling 17 are determined in correspondence to the rest of the profile 18, in order to have a perfect assembly and corner once the angle piece has been formed.

The board 11 can conventionally have a thickness ranging from 6 mm to 25 mm, but more preferably a thickness of at least 10 mm.

Advantageously, the profile 18 can have a projection 38 below the L-shaped part of the profile. More precisely, the projection 38 is in the continuation of the branch of the L extending perpendicularly to the surface of the board 11, and projects from the other side of the other branch of the L. The projection 38 is received in a corresponding groove 27 formed in the angle of the rectangular milling 17. The projection 38 provides an additional surface for gluing the profile in the cutout, which has the effect of ensuring better anchoring of the profile 18 in the angle piece to withstand accidental impacts against its outer corner.

Preferably, the rectangular milling extends substantially to the centre of the thickness of the board 11, whereas the groove 27 can extend to 2/3, or even 3/4, of its thickness (cf. distance 'b'). For example, for a board 11 with a thickness of 13 mm, the bottom of the groove 27 can be 9 mm from the surface of the board 11.

Claims

1. A structural panel in the form of a plasterboard (11) or similar sheet material provided with a liner (12, 13) on each side and having a cutout (16, 17, 27) on one side, which cutout makes it it is possible to fold over the parts of the panel on each side of the cut, in which a profile is fixed in the cut and in which an adhesive material is applied to the profile; characterized in that - the cut is formed by a rectangular milling (17) and another triangular milling (16) is arranged on one side of the rectangular milling (17), which triangular milling passes completely through the plate, but without passing through and - the profile has an L-shaped part (18) arranged at an angle of the rectangular milling (17), the L-shaped part being extended by an inclined part (28) arranged on one side of the triangular milling (16), which inclined portion extends to the level of the surface of the plate.

Panel according to claim 1, in which the profile has a projection (38) below the L-shaped part, which projection is arranged in a groove formed at the angle of the rectangular milling (17).

The panel of claim 1 or 2, wherein the adhesive material is a double-sided tape.

Panel according to any one of claims 1 to 3, in which the profile is made of galvanized metal or hard plastic.