EP0795671B1 - Fire and/or smoke protection door leaf - Google Patents

Abstract

The door has a continuous or frame-like filling (1) of less solid material set stabilised by a solid frame (6) whose socket is made of laminated wood veneer. Several individual veneers can be fixedly glued together on interposed layers (8) running at right angles to the plane of the door panel. The adhesive layers can each run parallel to the outer edge (2) set closest to it. The glue on the layers can be based on phenol or "Melamin" (RTM) resins. The veneer layer can be enclosed round its outer sides by one or more cover strips.

Description

The invention relates to a fire and / or smoke protection door leaf according to the preamble of appended claim 1, as for example from FR-A-1 509 126 is known. This publication will continue discussed in more detail below.

Accordingly, the invention relates to a fire and / or Smoke protection door leaf on the basis of Wood materials with a continuous or frame-like filling from less solid material leading to their outer edges or at least to their long sides Seen from the outer edges of a solid frame material stabilizing is.

Made on the basis of wood-based materials Fire and / or smoke protection door leaves of known type are, for example, at least intended for the fire protection area T30, i.e. they stop after the corresponding DIN determination of fire exposure from one side according to the status. Known fire and / or smoke protection door leaves of this type are made of chipboard manufactured, which, however, are not sufficient in terms of their stability in the fire area, to permanently attach fittings - hinges, locks, etc. That's why you have the chipboard forming the door leaf with a solid wood frame or a frame edged from medium density fiberboard material, the frame either blunt or toothed glued to the chipboard or clocked.

When used as fire protection doors have known fire and / or smoke protection door leaves furthermore a material strip area that foams up in the event of a fire or strip-shaped framing, for example Palusol, which has the task the joint area between the frame and the door leaf in the event of a fire and therefore under appropriate conditions Close heat supply. For this this foamable material strip area encompassed by a cover strip area facing the frame, the thus forms the visible front edge of the door in the rebate area and under the influence of heat from the foaming material strip area sealing against the frames is pressed. An example of such a door leaf is from GB-A-2 186 015 known. This also describes a fire door leaf based on wood-based materials one with continuous filling, seen from its solid towards its outer edges Frame material, namely medium-density fiber material is edged. The frame material is provided on its circumferential outer side with a cover strip. Between the cover strip and the frame material is the foaming one Strip of material area.

Although when using medium density fiberboard material compared to solid wood as a frame material for edging chipboard, advantages in terms of costs, Machinability and workability, constant stability of the door under influence of climate and fire conditions and avoidance of the use of tropical woods are achieved, the previously known generic fire and / or Smoke protection door leaves still need improvement in terms of fire and smoke protection. In the event of a fire, the well-known fire and / or smoke protection door leaves can become bend, which in extreme cases causes leakages between the frame and the fire and / or smoke protection door leaf arise and the desired protective function does not more is given. The tendency for the fire and / or smoke protection door leaf to bend is reinforced in the execution as a fire door by forces that through the foaming material strip area on the fire and / or smoke protection door leaf be exercised. This is all the more the case when the foaming, as is usually the case, due to the different high temperatures not uniform everywhere he follows. In addition, the heat resistance of the known frame materials is very high low.

DE-U-91 06 086 is also a door leaf with the features of the preamble of the appended claim 1. As a material for the border made of solid frame material multiplex rods, i.e. plywood rods, are used.

Finally, from the FR-A-1 509 126 mentioned at the beginning is a door leaf according to the preamble of the appended claim 1. This is also known for this door leaf Edging made of plywood, namely from layers of wood that correspond to the ordinary Technology for the production of plywood are glued together so that the Wood fibers from neighboring layers run crosswise to each other. For education of a fire protection door leaf is proposed by FR-A-1 509 126 that according to Plywood-like layers of wood are surrounded by layers of amiant and that additional layers of a stiffening material based on melanin or another suitable plastic resin between wooden layers. This Frame construction is very complex and costly.

The invention has for its object a fire and / or smoke protection door leaf in Preamble of claim 1 mentioned type with improved fire and / or smoke protection technology Properties and advantages in terms of costs as well as workability and processability to accomplish.

This task is carried out by a fire and / or smoke protection door leaf with the features of appended claim 1 solved.

Advantageous embodiments of the invention are specified in the dependent claims.

Surprisingly, it has also been shown that laminated veneer lumber except plywood greater resistance to heat than the frame materials previously used having. In addition, by gluing the veneers, which is usually under high Pressure happens, a certain remuneration effect brought into the frame.

In a preferred embodiment, individual veneers of the laminated veneer lumber are interposed, perpendicular to the door leaf level (the level of the panel) Bonding layers firmly glued together. This makes the layers arranged transversely to the bending direction and thus set a higher bending Resistance to. In a further preferred embodiment, the adhesive layers run in each case parallel to the outer edges closest to them and thus, so to speak, in the circumferential direction of the frame, which further increases the flexural rigidity elevated. In a further preferred embodiment are in the adhesive layers Glueing the veneers Glues made from phenolic or melamine resins are used are characterized by a particularly high resistance to heat. Laminated veneer lumber is used to create an optical and / or sealing finish in a more preferred embodiment on its circumferential outer side of surrounded by one or more cover strips.

In a further preferred embodiment, there can be between the cover strip and the frame material a material strip area can be arranged from laminated veneer lumber, which increases its volume under the influence of heat and thus in the event of fire The closed position brings the cover strip into firm contact against the face of the frame. The Known material strip area is precisely in the invention due to the particularly high bending stiffness of the fire and / or smoke protection door leaf according to the invention, that is less bent even when foaming is uneven becomes particularly advantageous.

In a further preferred embodiment, the cover strips are a correspondingly small one Have volume because they are especially the front edge termination and / or Seal joints in the event of fire, which can be easily removed after the fire has ended should be smooth or corresponding to the door leaf or frame construction seamed. Can cover the large areas of the door leaf "Coatings" can be provided, for example in the form of wood fiber boards or of high-density fiberboard or HDF board, which in turn may have an outside Coating are provided.

Figur 1

in perspektivischer Darstellung einen schräg geschnittenen Bereich eines stumpf ausgebildeten Türblatts;

Figur 2

einen Horizontalschnitt durch ein stumpf ausgebildetes Türblatt;

Figur 3

einen Vertikalschnitt durch ein stumpf ausgebildetes Türblatt;

Figur 4

in perspektivischer Darstellung einen schräg geschnittenen Bereich eines weiteren stumpf ausgebildeten Türblatts;

Figur 5

einen Horizontalschnitt durch ein weiteres stumpf ausgebildetes Türblatt; und

Figur 6

einen Vertikalschnitt durch ein weiteres stumpf ausgebildetes Türblatt.

An example is explained in more detail below with reference to the accompanying drawing with Figures 1 to 6. Show it

Figure 1

a perspective view of an obliquely cut area of a blunt door leaf;

Figure 2

a horizontal section through a blunt door leaf;

Figure 3

a vertical section through a blunt door leaf;

Figure 4

a perspective view of an obliquely cut area of another blunt door leaf;

Figure 5

a horizontal section through a further blunt door leaf; and

Figure 6

a vertical section through another blunt door leaf.

In the context of the drawings shown, 1 is a core consisting of one Board made of wood-based material, for example from a chipboard or alternatively also reproduced from several parts. The core 1 is on all four outer edges 2, 3, 4, 5 or optionally only on the longitudinal outer edges 2 and 3 a frame 6 made of laminated veneer lumber, which consists of several layers of Veneers 7 is constructed, which in turn on intermediate adhesive layers 8 are glued together. The laminated veneer lumber is glued so that the Bonding layers 8 of the individual veneers 7 at right angles to the board level lie. As shown in the individual figures, the adhesive layers 8 run parallel to the closest bordered outer edge 2, 3, 4, or 5.

The frame 6 is on the circumference or outside with a so-called glue 9 as Surround cover strip, in the embodiments shown in Figures 1 to 3 is glued directly to the frame 6. In other, shown in Figures 4 to 6 Embodiments is the frame 6 in the area of the upper outer edge 4 and / or the longitudinal outer edges 2 and 3 are surrounded on the outside by palusol strips 10, which foam under the influence of heat and which are attached to the palusol strip 10 Press edge band 9 against the adjacent frame sections to close the closed one To this extent, the door must be closed tightly in the event of a fire. The formed from the band 9 Cover molding frame forms the front edge of the door leaf exposed to the door view. Especially in the sense of a further version and visual improvement are the two broad sides of the door leaf with a so-called barrier 11 made of hardboard or HDF plus surface coating 12.

When manufacturing the door leaf, the frame 6 is first described in the Glued to the core 1. The frame 6 is then either directly or after glueing the palusol strips 10 the glue 9 glued. Supernatants over the Levels of the plate of the core 1 are made by a so-called calibration pass sanded down. Then the core 1 and the entire structure with the barrier 11 made of HDF and the surface 12 coated so that the door leaf for a fire or smoke protection door or a combination of both.

The frame material made of laminated veneer lumber provides greater flexural rigidity the fire and / or smoke protection door opposite door leaves with previously in this area used frame materials achieved. Decisive for the use of the door leaf on fire and / or smoke protection doors is very resistant to heat Gluing the veneers 7. For this purpose, glues based on phenolic or melamine resins used. In addition, the frame material is Gluing the veneers 7, which is done under high pressure, compensated. Because the frame 6 is high strength due to the use of laminated veneer lumber, its circumferential dimension kept small, for example in the range around 30 mm become.

The edge of the door leaf can be rebated for 1-leaf and 2-leaf doors, butt and / or butt with reveal fold, optionally also made with top cover become. If required, the door leaf can also be provided with a light cutout be closed again by a fire protection glass. Of course an embodiment is also conceivable in which the palusol strip 10 is additionally provided or alone at the area of the lower outer edge 5 between edge band 9 and Frame 6 is present.

Claims (8)

1. A fire and/or smoke protection door leaf based on wood materials with a complete or frame-like filling (1) of less-solid material which is enclosed at its outer edges (2, 3, 4, 5) or at least at its longitudinal outside edges (2, 3) in a stabilising manner by a solid frame material (6), characterised in that the enclosure with solid frame material (6) comprises veneer laminate wood, excluding plywood.
2. A fire and/or smoke protection door leaf according to claim 1, characterised in that the veneer laminate wood has individual veneers (7) which are glued solidly together on adhesion layers (8) which are disposed therebetween and which extend at right angles to the plane of the door leaf.
3. A fire and/or smoke protection door leaf according to claim 2, characterised in that the adhesion layers (8) each extend parallel to the nearest enclosed outer edge (2, 3, 4, 5).
4. A fire and/or smoke protection door leaf according to claim 2 or 3, characterised in that the adhesion layers (8) comprise glues based on phenolic or melamine resins.
5. A fire and/or smoke protection door leaf according to one of claims 1 to 4, characterised in that the veneer laminate wood is surrounded on its peripheral outer sides by one or more covering strips (9).
6. A fire and/or smoke protection door leaf according to claim 5, characterised in that a material strip area (10), which increases its volume under the effect of heat, is disposed around the veneer laminate wood, facing the frame area, this region being embraced by the cover strips (9) which spread out under the foaming material strip area (10) in the closed position to abut closely on the respective adjacent end faces of the frame spar.
7. A fire and/or smoke protection door leaf according to claim 5 or 6, characterised in that the cover strips (9) are provided with a groove gradation which faces the frame.
8. A fire and/or smoke protection door leaf according to one of claims 1 to 7, characterised in that at least one of the long sides of the fire and/or smoke protection door leaf is provided on its outside with a wood fibre panel (11), especially of highly-dense fibre plate material - HDF - optionally with an additional surface coating (12).

Images