SK286816B6 - Panel, particularly a floor panel with sound insulation - Google Patents

Abstract

Method for producing a panel provided with a sound insulation, particularly a laminate floor panel, according to which the panel is produced in a first method step, and the sound insulation is produced by applying at least one liquid material to the underside of the panel in a second method step. The material of the sound insulation is joined to the underside of the panel by an at least partial hardening. The aim of the invention is to simplify the production of a panel with a sound insulating layer. This is achieved by the inventive method and by a panel produced according to this method.

Description

The present invention relates to a panel with acoustic insulation, in particular a hard floor panel, in particular for a laminate floor.

BACKGROUND OF THE INVENTION

It is known that the unfavorable sound properties of laminate floors are improved by placing special pads between the laminate floor and the substructure (e.g. screed). On the one hand, this is to improve the footfall noise - the transmission of screed noise - and the noise in the room - the back emission of sound energy to the space above the floor. The unfavorable properties of laminate floor panels arise from high density and high density fibrous material or medium density fibrous material (high density fibrous material board (HDF) or medium density fibrous material board (MD F)).

As a rule, it is necessary to predetermine different substrates for sound insulation in terms of their density and their properties. These pads are manufactured by a separate manufacturing process and are then laid loosely under the floor or during the laying of the floor or glued with it at the assembly site to achieve further improvements. It is also known in the art that pads are bonded to floor panels during the manufacture of such floor panels, thereby providing easier laying of the floor.

From DE 201 08 668 U1, a laminate floor panel is known which is provided on the back with a sound-insulating material, and fillers having a density below the density of the sound-insulating material can be introduced into the material. The sound insulation material is applied in the liquid state.

SUMMARY OF THE INVENTION

Accordingly, the present invention solves the technical problem by presenting a method of manufacturing the panel as well as the panel itself, which has improved audio technology characteristics compared to the prior art.

The foregoing technical problem according to the invention is solved by the method according to claim 1. A further advantageous extension of this method is stated in the dependent claims.

The invention therefore relates to a method for producing a sound insulating panel, in particular a laminate floor panel, in which a panel is manufactured in a first operation and a sound insulation is produced by applying at least one liquid material to the underside of the panel in a second operation. fillers having a density greater than that of the sound insulation material, the sound insulation material being bonded to the underside of the panel by at least partially curing.

The invention is characterized in that the soundproofing layer is not a separate backing prior to joining with the underside of the panel, but is only formed on the back of the panel during manufacture. This eliminates the need for a single manufacturing operation, making production less expensive and simpler.

Similarly, said technical problem is solved by a sound-insulated panel according to the features of claim 13, and in this case too, the advantageous extension of the panel solution is mentioned in the dependent claims.

To this end, a liquid or liquid material is applied to the finished back of the floor panel. This can be done across the board, in the form of strips or in the form of a mesh.

Overview of the figures in the drawing

In the following, the invention will be explained in more detail with reference to the accompanying drawing. In the drawing, FIG. 1 is a schematic three-dimensional representation of two panels with differently applied sound insulation; and FIG. 2 shows various examples of a sound insulation arrangement.

DETAILED DESCRIPTION OF THE INVENTION

Fig. 1 shows various embodiments of panels with sound insulation made according to the method of the invention.

The panel consists mainly of a layer of material 20, which may also be formed as a laminate and which may comprise laminate layers. In FIG. 1, the downward facing side 1 of the panel corresponds to the view

SK 286816 Β6 the upper side of the panel in use, the upwardly facing bottom 2 of Figure 1 carries sound insulation. This can be a full-area coating 3 or a coating in strips 4 and 5, whereby the individual strips or strands of material are not continuous in the case of the coating 5. The grid-shaped coating may be applied diagonally with respect to the outer edge of the panel - see reference numeral 6, in parallel - see reference numeral 7, or mixed - see reference numeral 8.

Distances - The spacing of individual coatings in strip or mesh design can be matched to the vibrating knots to achieve sound optimum in certain wavelength regions. For example, a sound frequency range of approximately 1.0 to 4 kHz and a sound velocity in the panel material of approximately 0.5 to 3.5 km / second may be used. The dimensions of the network structure are then adjusted to the base wave lengths in the range of meters or tens of centimeters to obtain the best possible sound insulation. The varying grid spacing can also be selected at individual locations on the surface.

For example, the liquid material may be a hot melt adhesive (based on polyvinyl acetate or a reactive hot melt based on polyurethane), but liquid materials such as elastomers, in particular two-component elastomers (such as polyurethanes), are also suitable. Said materials rapidly cure upon subsequent cooling and thus bond to the surface of the underside of the panel.

In order to improve the sound technical properties, there is the possibility of incorporating high density fillers. Mineral fillers (barite, quartz sand, titanium oxide) and metal fillers (iron, aluminum) are suitable for this purpose. The fillers may be applied as a separate layer during manufacture. To this end, they are poured onto the liquefied material and bonded to it when the material cures.

Alternatively, the material may be mixed with fillers prior to application to the panel to provide a homogeneous mixture of filler and material.

It is also conceivable that several different layers of material, such as materials with different types of filler, are applied.

In addition, a strip-shaped layer can be applied to the still liquid meat. It can be, for example, a vapor barrier film (polyethylene film, aluminum foil), impact sound insulation (extruded polyethylene, soft PVC film), or even cardboard.

Figure 2 shows sections of panels each with a layer of material 20 and associated sound insulation of various embodiments.

In Figure 2a, the material is in the form of strips and without additional fillers.

In Figure 2b, there is a full-surface deposition of material 11 in which fillers 12 are dispersed. In this case, the fillers 12 are shown by dots.

In Figure 2c, the sound insulation consists of a homogeneous material 13 on which the fillers 14 are applied as a separate layer. The fillers 14 are schematically represented by dots.

Figure 2d shows a combination of two layers of materials, the first layer consisting of a mixture of material 11 and filler 12, and a second layer of non-filler material 12, which is applied in the form of strips.

Figure 2e also depicts a multilayered embodiment consisting of a first layer as in Example 2d, a separate filler layer 15 shown here in bevel lines, and a sealing layer 16 having no fillers.

Example 2f illustrates a film 17 applied to the soundproofing 10, wherein the film may also have sound insulation properties.

Claims (20)

PATENT CLAIMS Method for producing a sound-insulating panel, in particular a laminate floor panel, in which in a first operation a panel is produced, in which the soundproofing is produced in a second operation by applying at least one liquid material to the underside (2) of the panel and The applied sound insulation is joined by fillers (12, 14, 15) whose density is higher than the density of the sound insulation material, whereby the sound insulation material is bonded to the underside (2) of the panel by at least partially curing. The method of claim 1, wherein the liquid material is applied over the entire surface. Method according to claim 1, wherein the liquid material is successively applied to the underside (2) of the panel. The method of claim 3, wherein the liquid material is applied in the form of strips. The method of claim 4, wherein the liquid material is applied in the form of a mesh. The method of claim 5, wherein the network structure adapts in an existing region of the audio frequency to the emerging spacing of the vibration nodes within the panel material. The method according to any one of claims 1 to 6, wherein a hot melt adhesive is applied which is liquefied by heating prior to application. The method according to any one of claims 1 to 6, wherein the elastomer, in particular the two-component elastomer, is applied. Method according to any one of claims 1 to 8, wherein the fillers (12, 14, 15) are applied to the outer surface of the sound insulation material. The method of any one of claims 1 to 8, wherein the fillers are mixed with the liquid material prior to application. Method according to any one of claims 1 to 11, wherein at least two different layers of liquid materials are applied to the underside (2) of the panel, which are bonded to each other and / or to the underside (2) of the panel. The method according to any one of claims 1 to 11, wherein a preformed strip-shaped layer is applied to the applied sound insulation. A panel, in particular a laminate floor panel, with a layer of panel forming material (20) having acoustic insulation which is connected to the underside (2) of the panel, wherein the acoustic insulation has been produced by any method according to claims 1 to 13 and wherein the material The sound insulation has fillers (12, 14, 15), characterized in that the density of the fillers is higher than that of the sound insulation material. Panel according to claim 13, characterized in that the sound insulation consists at least partially of strings (4, 5; 10). Panel according to claim 14, characterized in that the material strands (4, 5; 10) are arranged as a net. Panel according to claim 14 or 15, characterized in that the network structure is adapted to the vibration node spacing within the panel material in the region of the sound frequency of approximately 1.0 to 4 kHz. Panel according to one of Claims 13 to 16, characterized in that the sound insulation consists of a hot-melt adhesive. Panel according to one of Claims 13 to 16, characterized in that the sound insulation consists of an elastomer, in particular a two-component elastomer. Panel according to one of claims 13 to 18, characterized in that at least two sound insulation layers are connected to the underside (2) of the panel. A panel according to any one of claims 13 to 19, characterized in that a preformed strip-shaped layer is associated with the sound insulation.