ES2625820T3 - Frame for drywall and drywall with improved acoustic properties - Google Patents

Abstract

Frame for drywall comprising a plurality of crossbars (7); and at least one U-channel (1), said U-channel comprising two opposite longitudinal side walls (2, 3) interconnected by a flat band (4), wherein said flat band comprises openings (5a, 5b, 5c, 5d, 5e, 5f); characterized in that: - said openings - are grooves having a width between 5 mm and 100 mm and a length between 80 mm and 500 mm, or - have a C, U or V configuration or generally type configurations chevron and are intertwined with each other, having a length between 10 mm and 400 mm and a width between 5 mm and 40 mm or - have the form of a grid; and - said plurality of crossbars (7) is a plurality of acoustic crossbars comprising two opposite longitudinal side walls interconnected by a section bridge having elastic properties, said section bridge comprising first and second substantially flat elements connected to the side walls corresponding and an element that interconnects said first and second planar elements, said interconnection element comprising slits arranged along the longitudinal direction of the crossbar.

Description

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DESCRIPTION

Frame for drywall and drywall with improved acoustic properties Field of the invention

The invention relates to a drywall that has improved acoustic properties and the use of a U-channel (or gma or track) to improve the acoustic properties of a drywall.

Technical background

A common construction technique for the manufacture of construction walls, and in particular of internal walls, consists of fixing sheets or sheets of wall material, such as plasterboard, to vertical crosspieces. Typically, each crossbar is secured in a horizontal beam or channel or gma secured to the floor or ceiling or both of the room in which the interior drywall is being constructed.

This wall construction technique is relatively simple and inexpensive and also allows subdividing existing living spaces if necessary, for example, when the use of an existing building is altered. This wall construction technique also allows the erection of separation walls (typically with two-frame / double-frame housing partitions) and distribution walls (typically single-frame). Also common are staggered structures, with a single gma (or U-channel) or with double angles.

Acoustic insulation has always been a problem with any interior wall.

Double frame walls have quite good insulating properties, but require space and are expensive to build.

Instead of securing a sheet of plasterboard on each side of the same wall crossbar, the common practice is to use two rows of parallel wall crossbars and secure a single sheet of plasterboard on the outer faces of each of the crossbars paired This is done to create a relatively large air space within the resulting wall that provides low frequency acoustic insulation. To further improve said double wall, double angles over large channels or individual gmas should be preferred.

However, this type of "double traverse" construction generally requires securing some form of brace between parallel crossings that span the air gap to provide the structure with adequate strength. In addition, if a double row of crossbars is used for a single wall, the cost of the materials used and the time required to install two rows of tracks, is significantly increased with respect to the costs that occur if a construction of a building could be used. just traverse

The walls of a single frame, with improved acoustic properties, are therefore of great interest.

WO-A-9623945 provides a single-frame wall comprising a metal frame that includes a plurality of crossbars located on U-tracks. The frame is adapted to facilitate its installation, but is not adapted to have better acoustic properties. Therefore, single-frame drywall requires adaptation to have better acoustic properties. Insulating material, such as rock wool or glass wool, is introduced into the air gap between the plates. The crossbars have also been modified to improve the acoustic properties.

For example, WO-A-03/102322 provides a wall traverse comprising two opposite side walls interconnected by an extension band, the extension band comprising first and second substantially flat elements connected to the respective side walls and an element which interconnects the first and second flat elements, the last element having at least one row of elongated grooves formed therein along a longitudinal axis thereof, said element interconnecting the first and second flat elements that are preferably substantially semicircular.

US-A-6381916 (or EP-A-1074671) provides a section for construction walls comprising

- two parallel section legs having two longitudinal edges and extending apart from each other, each section leg having an edge flange pointing towards the longitudinal interior that extends along one of said longitudinal edges;

- a common section bridge that connects said section legs along said longitudinal edges, opposite to said edge flanges, said bridge having at least one elastic segment with low transverse spring tempering extending in a longitudinal direction of the section;

- wherein said at least one elastic segment is formed from a plane formed by said section bridge and provides a flexible connection between said section legs;

- in which said recesses are slits that extend in the longitudinal direction of the section.

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The above solutions, like all acoustic solutions, are based on the use of an elastic section between the two side walls of the crossbar. It follows that acoustic insulation on drywall is based on elasticity.

The elements of the metal structure have received modifications in the crossbar only to a certain extent.

The channels have been known for decades. Very few modifications have been applied to them, except for modifications in “low cost” channels. Such "low cost" channels comprise, like the crossbars, two opposite longitudinal side walls interconnected by a bridge or flat section band, where said bridge or flat section band is formed, at least in part, with expanded metal ( or unfolded metal). Therefore, the amount of metal used is smaller than with standard channels, which allows a reduction in costs.

WO-A-0155525 provides a metal crossbar to support wall panels, in which curved grooves are formed and arranged specifically to increase the heat and acoustic insulation capacity of the crossbar. The grooves have a maximum width of 3 mm.

However, there is still a need for a metal structure or frame for use in interior walls that improves the acoustic properties of the final drywall and an improved drywall.

Brief Description of the Invention

The invention provides a drywall frame comprising a plurality of acoustic crossbars (7) and at least one U-channel, said U-channel comprising two opposite longitudinal side walls (2, 3) interconnected by a flat band (4) , wherein said flat band comprises openings (5a, 5b, 5c, 5d, 5e, 5f); characterized by:

- said openings

- they are grooves having a width between 5 mm and 100 mm and a length between 80 mm and 500 mm, or

- they have a configuration in C, U or V or generally cheuron type configurations and are interwoven with each other, having a length between 10 mm and 400 mm and a width between 5 mm and 40 mm, or

- they are shaped like a grid; Y

- said plurality of crossbars is a plurality of acoustic crossbars (7) comprising two opposite longitudinal side walls interconnected by a section bridge having elastic properties, said section bridge comprising first and second substantially flat elements connected to the corresponding side walls and an element that interconnects said first and second planar elements, said interconnection element comprising slits arranged along the longitudinal direction of the crossbar.

According to one embodiment, the openings are located in the central part of said flat band, or in which the openings are located in distal portions of said flat band, or the openings are located at the edges formed by the flat band and the side walls. .

According to one embodiment, the openings are slits. The slits can be arranged in rows. The slits can be arranged in a row located in the middle part of the band. The slits can be arranged in two or more rows located in the middle part of the band, in distal parts of said flat band or at the edges formed by the flat band and the side walls. The grooves can have the following dimensions: a length of 200 mm to 480 mm; a gap between the grooves of 20 mm to 150 mm, preferably 20 mm to 50 mm; a width of 5 mm to 100 mm, preferably 5 mm to 80 mm.

According to one embodiment, the openings are in the form of a grid. The grid can range from 10 to 80%, preferably from 30 to 60%, of the width of the flat web.

According to one embodiment, the openings have a configuration in C, U or V or generally cheuron type configurations and are intertwined with each other. The openings can have the following dimensions: length of the cheuron type configuration from 50 mm to 300 mm; width of the cheuron type configuration from 5 mm to 30 mm; width of the transparent part of the openings from 0.5 mm to 30 mm, preferably from 1 mm to 20 mm.

According to one embodiment, all openings have the same shape.

According to one embodiment, the openings are obtained by laser techniques, mechanical techniques with or without metal removal, including punching, punching, stamping, expansion and deployment.

The drywall frame can be a single frame.

The invention also provides a drywall comprising the drywall frame of the invention together with a plurality of plates, preferably drywall, fixed to said crossbars on each side thereof and preferably to said U-channels.

According to one embodiment, the drywall also comprises a filling material placed between the plates.

The invention also provides the use of a combination comprising a plurality of acoustic crossings 7 and a U-channel according to the invention to provide a metal structure to improve the acoustic properties of drywall.

According to one embodiment, the drywall is a single frame, a stepped frame or a double frame.

The present invention allows to improve the acoustic insulation properties of a drywall.

10 Since the channels are fixed to the floor or ceiling of the room, until the invention it was believed that they would not be used for the transmission of sound through the drywall. Unexpectedly, the inventors have discovered that the U-channel shares the acoustic properties and, even more surprisingly, that the known technical solutions for the crossbars cannot be applied to the U-channels. In fact, the crossbars simply with openings or indentations in the central flat band do not show improvements in acoustic properties while the same type of openings or indentations provides an improvement when applied to U-channels. The invention is based, at least in part, on this surprising finding. .

Brief description of the drawings

Figure 1 represents a perspective view of a first embodiment of the invention.

Figure 2 represents a perspective view of a second embodiment of the invention.

20 Figure 3 represents a top view from different embodiments of the invention.

Figure 4 represents a top view from different embodiments of the invention.

Figure 5 represents a single frame of the invention with plasterboard mounted thereon.

Detailed description of embodiments of the invention

The invention is now described in more detail in the following description.

The metal frame of the invention comprises at least one U-channel and a plurality of cross-members, said cross-members being introduced into said channels, where the longitudinal side walls of the channels will keep said cross-sections in place. This is conventional in the art and the methods for erecting drywall do not change with the invention.

The invention is based on the use of a specific U-channel (or track or track), used in combination with acoustic crossbars, to provide a metal structure in which all elements are designed to improve the acoustic properties of the drywall. final.

As shown in Figure 1, the U-channel (1) of the invention comprises two opposite longitudinal side walls (2, 3) interconnected by a flat band (4), wherein said flat band comprises openings (5a, 5b, etc.). The side walls (2, 3) are substantially parallel to each other and / or substantially equal in width. In use, the crossbars are forced to enter the U-channels, and then can be screwed if necessary. The preferred dimensions for the U-channel are the following: 48, 50, 62, 70, 75, 90, 100, 146, 150 and 200. The flat band 4 may have a width of 36 mm to 200 mm, preferably 48 mm to 150 mm. The width of the side walls (2, 3) can be from 25 mm to 50 mm, preferably from 25 mm to 35 mm. The thickness of the metal sheet used to make the U-channel is adapted and is generally 0.5 or 40 0.6 mm, although other thicknesses can be used if necessary. The metal is standard and does not need any

adaptation.

The openings can be placed in the central part of the flat web, as shown in Figure 1.

They can also be placed in a place of the band near the side walls or even at the angles formed by the band and the side walls. This last embodiment is represented in Figure 2.

45 The openings can be placed in more than one place in the band.

The openings can have several shapes. A preferred form is a groove with an elongated shape. The openings generally comprise a plurality of slits, arranged in a row or in a plurality of rows, typically 2 or 3 adjacent rows. In case there is more than one row of slits, the slits can be placed in correspondence or moved relative to each other. The offset can be 50 symmetric or not.

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Figure 3a represents the embodiment shown in Figure 1, seen from above, only for the band part 4. Figure 3b is a variant with substantially larger surface grooves. Figure 3c represents an embodiment in which the slits (5a, 5b, 5c, 5d, 5e) are arranged in two adjacent rows (6a, 6b), the slits being displaced. In the embodiment shown in Fig. 3c, rows of first and second slits are provided, the second row of slits moving along the length of the flat band 4 approximately half the length of a slit with respect to the first row of slits. The two rows of grooves are also separated from the middle line of the flat band 4. Figure 3d represents an embodiment in which the grooves (5a, 5b, 5c, 5d, 5e, 5f) are arranged in two adjacent rows (6a , 6b), the grooves being aligned from one row to another.

The length of the grooves can be from 80 mm to 500 mm, preferably from 200 mm to 480 mm. The spacing between the grooves along the direction of a given row can be 20 mm to 150 mm, preferably 20 mm to 50 mm. (The ratio of length to spacing of the slits may be approximately 4: 1 to 25: 1, preferably 5: 1 to 15: 1). The width of the slits is 5 mm to 100 mm, preferably 5 mm to 80 mm. When two or more rows are contemplated, the distance between their respective adjacent axes is calculated so that they have sufficient material to maintain mechanical strength. Typically, this distance between the adjacent axis is such that the distance between two indentations of two different parallel adjacent rows can be 10 mm to 150 mm, preferably 10 mm to 80 mm.

A row of diagonal grooves can also be used, preferably in the middle part of the flat band. The grooves then extend through part or all of the width of the flat band.

As shown in Figures 4a, 4b, 4c and 4e, the openings may also have other designs such as C or U or V shapes, usually cheuron-like shapes, where the C or U or V openings or Cheuron type are intertwined with each other, the corresponding vertices are opposite each other. There may be more than one such cheuron type opening in a row, as shown in Figure 4d. Alternatively, the rows can be repeated in different places of the U-channel band. With this geometry, the sound track is longer than for a direct connection. The sound attenuation is thus improved with this geometry.

The length of the openings in C / U / V (cheuron type) is 10 mm to 400 mm, preferably 50 mm to 300 mm. The width of the C / U / V shape (of the cheuron type) may be 5 mm to 40 mm, preferably 5 mm to 30 mm. The width of the openings (that is, the part that is transparent) can be 0.5 mm to 30 mm, preferably 1 mm to 20 mm. Two or more cheuron-type openings can be used for repeating the pattern. Otherwise, the dimensions provided above apply equally. For example, the distance between the adjacent axis of rows of interlocking openings of the cheuron type is such that the distance between two indentations of two adjacent parallel rows can be 10 mm to 150 mm, preferably 10 mm to 80 mm.

The openings can also be in the form of a grid, obtained mainly by expansion or deployment of metal. The grid may extend over a part of the flat band, or substantially over the entire width of the band. The grid can thus extend from 10 to 80%, preferably from 30 to 60% of the width of the flat web.

Holes are also allowed, for example, formed by mechanical processes. The metal that can remain after the formation of the openings will preferably remain in the internal volume of the U-channel; a flat and smooth surface can therefore remain available outside the U-channel.

Preferably, all openings have the same shape, with the same length and width.

Different techniques can be used to form the openings. Laser cutting is a technique that can be used in lmea. Other techniques that use mechanical tools can be used, as is known in the art. Punching, punching, stamping and any other known method can be used. Another possible method is also the expansion or deployment of metals. U-channels or existing tracks formed using this latest technique are already known.

Openings can be formed with or without metal removal. In the case of a mechanical technique without metal removal, the metal that is removed from the piece to form the openings preferably remains on one side of the metal sheet. Openings, for example, slits, can be stamped, and the vertical slit edges placed to one side. Said vertical slit edges preferably protrude towards an inner part of said vertical section.

Possible U-channels that can be used in the invention are MAXI-TEC® products or those manufactured by Dallan (expanded metal, optionally folded).

The U-channel band can be completely flat or have a large groove. Both embodiments are known in the field of channels. When placed simply on the wall, the flat strip will show a space, with the substrate of, for example, approximately 0.5 to 2 mm. This can be useful during channel fabrication. The embodiment with a large slot can also be useful during use, since the side walls, such as

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as a result of the flat band being forced towards the floor or the ceiling, they will bend into the channel and provide an improved grip of the crossbars.

The acoustic crossbars used in the invention for the fabrication of the frame are those crossbars that are known to improve the acoustic properties of a drywall. A crossbar will be defined as acoustic if, when used in a standard drywall instead of a standard crossbar with the same metal thickness, it provides a gain of at least 2 dB for the transmission of sound through the wall. Examples of acoustic crossings are the subjects of WO-A-03/102322 and EP-A-1074671. Acoustic performance is measured using the standards defined in the examples section.

Acoustic crossings typically comprise two opposite longitudinal side walls interconnected by a section bridge, said bridge having elastic properties. Typically, the section bridge comprises substantially first and second planar elements connected to the respective side walls and an element that interconnects the first and second planar elements, the latter element providing elasticity. The elasticity is improved in the crossbars through the use of perforations, typically grooves arranged along the longitudinal direction of the crossbar.

Although the invention can be used for double-frame walls or stepped walls, it is preferable to use the invention for single-frame walls.

The metal frame is used with standard wall panels such as plasterboard. The walls are erected according to known standards.

Figure 4 represents a unique erected frame, with plasterboard mounted on it. U-channels (also known as cranes or tracks or beams) are secured (typically with screws or glue) on the floor and ceiling of the room. The acoustic crossbars 7 are inserted into the U-channels. The plasterboard 8 is then fixed in a standard manner to the crossbars (for example, with screws). Gypsum boards are also preferably fixed to the U-channels in a standard manner (for example, with screws).

An insulating material, such as mineral wool, rock wool, glass wool, foamed plastics of interwoven polyester wool, foamed polymers or any known filler material can be used to improve the acoustic properties, to fill the interior space of the panel cast. This is conventional in the art.

The invention further relates to the use of a plurality of acoustic crossbars (7) in combination with the U-channel to provide a metal structure to improve the acoustic properties of drywall. This improvement is achieved in single-frame drywall, but also in a stepped frame or even in double-frame drywall. The present invention makes it possible to replace typically used corners / angles and still obtain improved acoustic properties.

The U-channels of the invention also provide ease of handling, particularly in comparison with corners / angles, especially at the site of use. They are also easier to align, compared again with angles / corners. The U-channels of the invention are otherwise handled in a manner similar to the standard U-channels. No acoustic improvements are obtained to the detriment of handling or mechanical resistance (once installed).

The following examples illustrate the invention without limiting it.

The acoustic performance is measured in accordance with BS standards. In ISO 140-3 Acoustics - Measurement of acoustic insulation in buildings and construction elements - Part 3 Measurement in laboratory of insulation against aerial noise of construction elements and BS EN ISO 717_1 Qualification of acoustic insulation in buildings and construction elements - Part 1 Insulation against air noise.

Examples

The Rw + C acoustic performance is measured for a double-frame drywall with 62 standard crossbars. The width of the channel and the crossbars is 62 mm. They are angles / corners, standard U channels ("standard" channel), a U channel according to the embodiment of Figure 3b ("U 1 channel") and a U channel according to the embodiment of the figure 4e and ("U2 channel") tested. The U-channel 1 comprises grooves with a length of 230 mm, a width of 45 mm and separations between two grooves of 50 mm. The U-2 channels comprise cheuron-type openings, with a length for the central part of 200 mm, flanked with inclined parts, these parts forming an angle of 45 ° with the axis of the slit and having 20 mm in length each ( thus forming a width of approximately 14.14 mm). Two parallel openings of the cheuron type are displaced with respect to another 20 mm. The transparency is approximately 1 mm.

The results are presented in the following table.

 Kind

 Angles Standard channel U-channel 1 U-channel 2

 Rw + C (d) B

 53 49 52 52

Claims (16)

5 10 fifteen twenty 25 30 35 40 Four. Five 1. Frame for drywall comprising a plurality of crossbars (7); and at least one U-channel (1), said U-channel comprising two opposite longitudinal side walls (2, 3) interconnected by a flat band (4), wherein said flat band comprises openings (5a, 5b, 5c, 5d, 5e, 5f); characterized by: - said openings - they are grooves having a width between 5 mm and 100 mm and a length between 80 mm and 500 mm, or - they have a configuration in C, U or Vo configurations generally of cheuron type and are interwoven with each other, having a length between 10 mm and 400 mm and a width between 5 mm and 40 mm or - they are shaped like a grid; Y - said plurality of crossbars (7) is a plurality of acoustic crossbars comprising two opposite longitudinal side walls interconnected by a sectional bridge having elastic properties, said sectional bridge comprising first and second substantially flat elements connected to the corresponding side walls and an element that interconnects said first and second planar elements, said interconnection element comprising slits arranged along the longitudinal direction of the crossbar. 2. Frame for drywall according to claim 1, wherein the openings (5a, 5b, 5c, 5d, 5e, 5f) are located in the central part of said flat strip (4), or in which the openings they are located in distal parts of said flat band (4), or in which the openings are located at the edges formed by the flat band (4) and the side walls (2, 3). 3. Plasterboard frame according to claim 1 or 2, wherein the openings (5a, 5b, 5c, 5d, 5e, 5f) are slits. 4. Plasterboard frame according to claim 3, wherein the grooves are arranged in rows. 5. Plasterboard frame according to claim 3, wherein the slits are arranged in a row located in the middle part of the strip. 6. Plasterboard frame according to claim 4, wherein the grooves are arranged in two or more rows located in the middle part of the band, in distal parts of said flat band or at the edges formed by the flat band and the side walls. 7. Plasterboard frame according to any one of claims 3 to 6, wherein the grooves are between 200 mm and 480 mm long, and a gap between the grooves between 20 mm and 150 mm, preferably between 20 mm and 50 mm. 8. Plasterboard frame according to claim 1 or 2, wherein the openings are in the form of a grid. 9. Plasterboard frame according to claim 8, wherein the grid extends from 10 to 80%, preferably from 30 to 60%, of the width of the flat strip. 10. Plasterboard frame according to any one of claims 1 to 9, wherein all openings have the same shape. 11. Plasterboard frame according to any one of claims 1 to 10, wherein the openings are obtained by laser techniques, mechanical techniques with or without metal removal, including punching, punching, stamping, expansion and deployment. 12. Plasterboard frame according to any one of claims 1 to 11, which is a single frame. 13. Plasterboard comprising the frame for gypsum board according to any one of claims 1 to 12 together with a plurality of plates (8), preferably plasterboard, fixed to said crossbars (7) on each side thereof and preferably to said U-channels. 14. Drywall according to claim 13, further comprising a filler material placed between the panels. 15. Use of a plurality of acoustic crossbars (7) in combination with a U-channel to provide a metal structure to improve the acoustic properties of drywall, said U-channel comprising two opposite longitudinal side walls (2, 3) interconnected by a flat band (4), wherein said flat band comprises openings (5a, 5b, 5c, 5d, 5e, 5f), said openings - they are grooves having a width between 5 mm and 100 mm and a length between 80 mm and 500 mm, or - they have a configuration in C, U or V or generally cheuron type configurations and are interwoven with each other, having a length between 10 mm and 400 mm and a width between 5 mm and 40 mm or - they are shaped like a grid; wherein said plurality of acoustic crossbars (7) comprises two opposite longitudinal side walls 5 interconnected by a section bridge having elastic properties, said section bridge comprising first and second substantially flat elements connected to the corresponding side walls and an element which interconnects said first and second planar elements, said interconnection element comprising slits arranged along the longitudinal direction of the crossbar. 16. Use according to claim 15, wherein the drywall is a single frame, a stepped frame or a double frame.