Classifications

• • D—TEXTILES; PAPER
  • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
  • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
  • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
  • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
  • D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
  • D04H1/541—Composite fibres, e.g. sheath-core, sea-island or side-by-side; Mixed fibres
  • D04H1/5418—Mixed fibres, e.g. at least two chemically different fibres or fibre blends
• • E—FIXED CONSTRUCTIONS
  • E04—BUILDING
  • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
  • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
  • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
  • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
  • E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
  • E04B1/84—Sound-absorbing elements
  • E04B1/86—Sound-absorbing elements slab-shaped
• • D—TEXTILES; PAPER
  • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
  • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
  • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
  • D04H1/02—Cotton wool; Wadding
• • D—TEXTILES; PAPER
  • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
  • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
  • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
  • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
  • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
  • D04H1/4266—Natural fibres not provided for in group D04H1/425
• • D—TEXTILES; PAPER
  • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
  • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
  • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
  • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
  • D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
  • D04H1/558—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving in combination with mechanical or physical treatments other than embossing
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
  • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
  • B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
  • B27N3/04—Manufacture of substantially flat articles, e.g. boards, from particles or fibres from fibres
• • E—FIXED CONSTRUCTIONS
  • E04—BUILDING
  • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
  • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
  • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
  • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
  • E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
  • E04B1/84—Sound-absorbing elements
  • E04B2001/8457—Solid slabs or blocks
  • E04B2001/8461—Solid slabs or blocks layered

Definitions

• the present invention relates to a method for producing an acoustic insulation board. Furthermore, the invention relates to an acoustic insulation board.
• walls and ceilings of rooms are provided with acoustic insulation panels. These reduce the reflection of sound waves on the walls and ceilings and thus reduce the noise level in the room.
• An increased noise level such as e.g. may occur in open-plan offices, sales areas or production halls, may be detrimental to the persons in them.
• acoustic insulation panels are already described, which, however, usually do not meet the technical and optical challenges.
• Such acoustic panels in addition to reducing sound reflection, must also meet certain static characteristics, e.g. Objects (such as light sources) to be attached to it.
• the acoustic insulation panels should also fit visually into the room. In particular, visible edges in the region of the joints of adjacent plates are perceived as disturbing.
• the object of the present invention is therefore to provide an acoustic insulation panel which fulfills the above-mentioned properties.
• an acoustic insulation panel comprising a mixture of wool fiber and binder with at least two areas of different density. This part of the acoustic insulation board is also referred to below as the core area.
• acoustic insulation panels not only has the advantage that wool is a naturally renewable, recyclable raw material, but it also shows that the shocks from adjacent, adjacent acoustic insulation panels are not visible to the naked eye. This is due to the fact that the acoustic insulation panels on the edges are on the one hand compressible and on the other hand have a slight roughness, so that when pushing together two edges no shock remains recognizable.
• the mixture of wool fibers with binder - especially binder fibers - also shows a very high efficiency in the reduction of sound reflection.
• the mechanical stability of such plates is sufficient, for example, to be able to record lights or light sources on the ceiling or to attach objects (pictures, panels, etc.) to walls.
• the acoustic insulation board is self-supporting.
• the acoustic insulation panel preferably also comprises a cover fleece.
• a cover fleece in the manufacturing process, first a introduction of a cover fleece in a mold and then the introduction of a mixture of wool fibers and binder fibers in the form and that on the cover fleece.
• a second cover fleece may be provided, which is arranged on the opposite side of the first cover fleece.
• the second cover fleece is introduced. This ensures a good connection between cover fleece and core area.
• the acoustic insulation panel comprises, in the presence of a cover fleece next to the cover fleece disposed thereon a mixture of wool fiber and binder, wherein the mixture has at least two areas with different density. If two cover fleeces are present, then between the two cover fleeces is the mixture of wool fiber and binder with at least two regions with different density.
• the cover fleece comprises wool and binder, preferably binder fibers. It can be provided that the cover fleece is produced by a nonwoven fabric manufacturing process of wool and binder fibers. Thus, a natural raw material is also present in the cover fleece as the main component.
• the cover fleece has an impregnation with an insect repellent, in particular with a moth repellent.
• the cover fleece can be impregnated before being introduced into the mold with an insect repellent, preferably the wool used to produce the cover fleece is impregnated with an insect repellent prior to the production of the cover fleece.
• the wool is impregnated with Aflammit - e.g. by diving - become.
• cover fleece is about 2 to 5 mm thick and / or has a basis weight of 270 to 450 g / m 2, preferably about 300 g / m 2 .
• the content of wool fibers about 80 wt.% And the content of binder fiber about 20 wt.%.
• the binder fiber is preferably PE (polyethylene) or PLA (poly (lactic acid)), PP (polypropylene) or a combination thereof.
• PE polyethylene
• PLA poly (lactic acid)
• PP polypropylene
• Such a mixture is processed by means of nonwoven production to form a non-woven material about 2 to 5 mm thick with about 300 g / m 2 .
• cover fleece can be soaked throughout with water glass and dried to ensure greater mechanical stability and adequate fire protection. Therefore, it is preferably provided that the cover fleece is impregnated with a thickening agent, preferably water glass, and then dried. The acoustic insulation panel is then designed such that the cover fleece has a thickening agent.
• the binder comprises the mixture of wool fibers and binder fibers PE, PLA or PP.
• the mixing ratio in the mixture of wool fibers and binder fibers based on the respective mass is between 70:30 and 50:50.
• the mixture of wool fibers and binder preferably have an impregnation with insect repellent.
• the wool fibers of the mixture of wool fibers and binder fibers are impregnated with an insect repellent prior to mixing.
• the acoustic insulation board in this case is characterized by a first region having a density of 250 to 350 kg / m 3 and a second region, which is different from the first, having a density of 300 to 450 kg / m 3 .
• the finished acoustic insulation board is thus produced by fiber blowing technology, ie, if necessary, the cover fleece is placed in a mold, then the wool fiber / binder fiber mixture is blown in the form of a wool fiber / binder cake. This is preferably up to about 50 cm high.
• This wool fiber / binder fiber mixture is heated by means of hot air. Once the complete heating has taken place, the mixture is also pressed with the cover fleece to a plate.
• the plate is made of standing fiber. This results in a porous structure which allows a high sound absorption and still gives a dimensionally stable plate. Due to the stiffness, the plate can be mounted on a battens without sagging. Therefore, the underlying air space additionally allows further sound absorption. At the same time the plate can be deformed 2D and 3D due to its elasticity and therefore can be used very versatile.
• the wool of the mixture may also be pretreated and e.g. be impregnated with Aflammit. Then it can be cut and mixed with binder fiber.
• a finished acoustic insulation panel may e.g. 900 mm * 900 mm with a thickness of 12 mm, showing a mass of approx. 3 kg.

Landscapes

• Engineering & Computer Science (AREA)
• Textile Engineering (AREA)
• Physics & Mathematics (AREA)
• Acoustics & Sound (AREA)
• Architecture (AREA)
• Mechanical Engineering (AREA)
• Electromagnetism (AREA)
• Civil Engineering (AREA)
• Structural Engineering (AREA)
• Soundproofing, Sound Blocking, And Sound Damping (AREA)
• Building Environments (AREA)
• Nonwoven Fabrics (AREA)

Priority Applications (3)

Applications Claiming Priority (1)

Publications (1)

Family

ID=57799612

Family Applications (2)

Family Applications After (1)

Country Status (2)

Citations (2)

• 2017
  • 2017-01-13 EP EP17151508.3A patent/EP3348727A1/fr not_active Withdrawn
• 2018
  • 2018-01-12 WO PCT/EP2018/050719 patent/WO2018130635A1/fr unknown
  • 2018-01-12 EP EP18700294.4A patent/EP3568537A1/fr not_active Withdrawn

Patent Citations (2)

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