EP3031614A1 - Schallabsorbierende trockenlöschbare tafel - Google Patents
Schallabsorbierende trockenlöschbare tafel Download PDFInfo
- Publication number
- EP3031614A1 EP3031614A1 EP15194664.7A EP15194664A EP3031614A1 EP 3031614 A1 EP3031614 A1 EP 3031614A1 EP 15194664 A EP15194664 A EP 15194664A EP 3031614 A1 EP3031614 A1 EP 3031614A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- surface side
- sound absorbing
- perforated plate
- dry erase
- erase board
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 239000000203 mixture Substances 0.000 claims abstract description 16
- 229920000642 polymer Polymers 0.000 claims abstract description 14
- 239000011358 absorbing material Substances 0.000 claims abstract description 10
- 239000000037 vitreous enamel Substances 0.000 claims abstract description 10
- 239000000463 material Substances 0.000 claims description 9
- 239000000945 filler Substances 0.000 claims description 7
- 239000011490 mineral wool Substances 0.000 claims description 6
- 239000004593 Epoxy Substances 0.000 claims description 2
- 150000001252 acrylic acid derivatives Chemical class 0.000 claims description 2
- 125000003700 epoxy group Chemical group 0.000 claims description 2
- 239000003302 ferromagnetic material Substances 0.000 claims description 2
- 239000011810 insulating material Substances 0.000 claims description 2
- 229920000647 polyepoxide Polymers 0.000 claims description 2
- 229920000728 polyester Polymers 0.000 claims description 2
- 150000003673 urethanes Chemical class 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 description 8
- 239000002184 metal Substances 0.000 description 8
- 238000000576 coating method Methods 0.000 description 7
- 238000004534 enameling Methods 0.000 description 7
- 229910000831 Steel Inorganic materials 0.000 description 6
- 239000011248 coating agent Substances 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000000047 product Substances 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000006096 absorbing agent Substances 0.000 description 3
- 239000012467 final product Substances 0.000 description 3
- -1 polypropylene Polymers 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 2
- 210000003298 dental enamel Anatomy 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 230000005291 magnetic effect Effects 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 229920000877 Melamine resin Polymers 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229920002301 cellulose acetate Polymers 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000008199 coating composition Substances 0.000 description 1
- 150000001868 cobalt Chemical class 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- IVMYJDGYRUAWML-UHFFFAOYSA-N cobalt(ii) oxide Chemical class [Co]=O IVMYJDGYRUAWML-UHFFFAOYSA-N 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000005238 degreasing Methods 0.000 description 1
- 239000002320 enamel (paints) Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000005294 ferromagnetic effect Effects 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000003472 neutralizing effect Effects 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L1/00—Repeatedly-usable boards or tablets for writing or drawing
- B43L1/008—Repeatedly-usable boards or tablets for writing or drawing with magnetic action
-
- 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
-
- 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
- E04B2001/8476—Solid slabs or blocks with acoustical cavities, with or without acoustical filling
- E04B2001/848—Solid slabs or blocks with acoustical cavities, with or without acoustical filling the cavities opening onto the face of the element
- E04B2001/8495—Solid slabs or blocks with acoustical cavities, with or without acoustical filling the cavities opening onto the face of the element the openings going through from one face to the other face of the element
Definitions
- the present invention relates to the field of dry erase boards.
- One aspect relates to a sound absorbing dry erase board comprising:
- This product is that it can be used directly as a wall panel or may be attached to a wall as an ordinary dry erase board. In both situations, the product will assist in reducing the reverberation times and sound reflections.
- the sound absorbing dry erase board comprises a first perforated plate with a plurality of holes.
- the perforated plate has a first surface side and a second surface side; and the first surface side is opposite to the second surface side.
- the perforations/holes span from the first to the second surface side.
- the diameter and/or number and/or spacing of the holes/perforations in the perforated plate can be tuned or configured for various sound damping characteristics or applications.
- the holes are regularly spaced.
- the first surface side is coated or laminated with a cured polymer composition or with vitreous enamel that provides a virtually non-porous surface to which can be applied legible markings and writing, which can be easily erased.
- the sound absorbing dry erase board also comprises a first layer of sound absorbing material facing the second surface side of the first perforated plate.
- the perforated plate may be made of different materials, such as aluminum or a ferromagnetic metal, such as steel.
- dry erase boards are a well-known method for writing information temporarily. Writings on a dry erase board are erasable by wiping lightly with felt, dry cloth or paper.
- Suitable dry erase surfaces generally include a cured polymer composition, such as a melamine, acrylic, vinyl chloride, polypropylene, polyethylene, polyethylene terephthalate, polystyrene, cellulose acetate, or polyurethane, coated to a backing plate. Alternatively, a vitreous enamel is coated on the backing plate. A polymeric film may also be laminated to the backing plate.
- the laminate must also be perforated such that the perforations/holes match the position of the perforations/holes in the perforated plate. Otherwise, the sound absorbing effect of the perforated plate will be limited.
- the perforations in the perforated plate will either remain open during the coating process, or if it is made from pre-coated material (coil coating), the perforation will take place after the coating.
- This type of coating/laminate results in a surface that is hard, often white (but may also be of other colors), very smooth in appearance, and essentially non-porous. It is important for the coating or laminate to be essentially non-porous, as the non-permanent ink (non-bonding to the surface) may otherwise enter the porous structure in the surface, leaving visible remains, commonly termed "ghosting".
- the vitreous enamel coating consists of a layer of glass, which is thermally fused to the perforated metal plate, such as a perforated steel plate.
- a ground coat consisting of a slip of the pulverized enamel constituents is applied to the perforated metal plate, and the ground-coated perforated metal plate is fired in an enameling furnace at an elevated temperature sufficient to effect the fusing of the ground coat.
- adherence agents are included in the ground coat formulation.
- oxides of nickel, cobalt, manganese, and others are used, as well as salts of these metals, which under the enameling conditions will form oxides.
- Cobalt oxides or cobalt salts convertible to the oxide under enameling conditions are especially effective adherence agents.
- the cleaning generally consists of degreasing, pickling in acid, rinsing in a neutralizing bath, sometimes followed by a nickel solution dip to improve enameling behavior during firing, after which the articles are washed and dried.
- the ground coat is fired at temperatures as high as 800-900 degrees Celsius.
- the firing or burning of the enamel coating onto the perforated metal plate is carried out in a furnace in an oxidizing atmosphere.
- the sound absorbing material may be of any suitable type, such as acoustic felt, mineral wool or mixtures thereof.
- the sound absorbing material is preferably formed as a sheet with a first surface side and a second surface side; and the first surface side being opposite to the second surface side.
- the holes must be of a certain size to allow the sound waves to enter, and at the same time be small enough to avoid that the pen will enter when writing on the dry erase board.
- the holes have a diameter within the range of 0.1-2 mm, e.g. within the range of 0.2-1.9 mm, such as within the range of 0.3-1.8 mm, e.g. within the range of 0.4-1.7 mm, such as within the range of 0.5-1.6 mm, e.g. within the range of 0.6-1.5 mm, such as within the range of 0.7-1.4 mm, e.g. within the range of 0.8-1.3 mm, such as within the range of 0.9-1.2 mm, e.g. within the range of 1.0-1.1 mm.
- the holes have a diameter within the range of 0.3 mm-1.5 mm.
- the sound absorbing dry erase board further comprises one or more layers of filler material facing the first surface side and/or the second surface side of the layer of sound absorbing material.
- the filler material also has a sound absorbing effect, such as mineral wool.
- the filler material is a heat insulating material, such as mineral wool.
- the sound absorbing dry erase board further comprises a second perforated plate with a plurality of holes, such as regularly spaced holes.
- the second perforated plate has a first surface side and a second surface side; and the first surface side is opposite to the second surface side.
- the first surface side is coated/laminated with a cured polymer composition or with vitreous enamel that provides a virtually non-porous surface to which can be applied legible markings and writing, which can be easily erased.
- the second surface side of the second perforated plate is facing the second surface side of the first perforated plate.
- This embodiment is especially suitable as a multifunctional dry erase board (multifunctional wall panel) used e.g. to separate two classrooms.
- the sound absorbing dry erase board further comprises a second perforated plate with a plurality of holes, such as regularly spaced holes, the second perforated plate having a first surface side and a second surface side; wherein the first surface side is opposite to the second surface side; wherein the first surface side is coated with a cured polymer composition or with vitreous enamel that provides a virtually non-porous surface to which can be applied legible markings and writing which can be easily erased; wherein the second surface side of the second perforated plate is facing the second surface side of the first perforated plate, and wherein a second layer of sound absorbing material is positioned in-between the layer of filler material and the second perforated plate.
- the sound absorbing dry erase board can function as a display wall.
- the first and/or second perforated plate is of a ferromagnetic material.
- the cured polymer composition comprises polymers selected from the group consisting of polyesters, epoxies, urethanes, acrylates, and mixtures thereof.
- the dry erase board further comprises a frame structure and two or more wheels for ease of movement of the dry erase board.
- the dry erase board is attached to the frame structure, and the wheels are attached directly to the frame structure or may be attached to a rod or a similar device welded onto or attached to the frame structure.
- the dry erase board further comprises a frame structure and means for attachment onto a table, such as an office or school table. Sound may thereby be absorbed and insulated from the occupant of the table, while at the same time be used for dry erase notes and drawings, as well as a magnetic notice board.
- Another aspect of the present invention relates to a performance table, such as a school table, comprising a desktop comprising a sound absorbing dry erase board according to the present invention.
- This product is useful in for example class rooms or meeting rooms, where the rooms walls can then be used both for improving acoustics while at the same time allowing for additional surfaces to be used for writing boards and as magnetic board for attaching notes and pictures etc.
- a coil of steel, pre-coated with a cured polymer composition according to the present invention is first perforated in a coil-to-coil perforation press.
- the perforated coil is then cleaned from grease originating from the perforation process, also in a coil-to-coil process.
- a sound absorbing felt is applied (by using glue) onto the non-coated side of the steel.
- the coated, perforated steel with backside felt is then cut and bent into the desired shape of a wall panel, leaving a 2-10 cm deep enclosure/space behind the backside felt. Finally, the enclosure is filled with mineral wool.
- a frame may be added to the wall hung dry erase board for decorative or practical purposes. The final product is shown in Figure 1 .
- This product is useful in for example class rooms and office spaces, enabling both improved acoustics for the occupants, while at the same time allowing for more surface space to write notes and presentations or by using magnets, attach drawings, pictures or notes.
- a second panel (made from the coated, perforated steel with backside felt) is mounted with the backside felt facing the mineral wool, and enclosed by a frame around the two panels. Finally, a stand or wheels are mounted on the frame for stable floor placement or easy movement.
- This product is useful for allowing better acoustics for the desk occupants while at the same time allowing surface space to write notes or by using magnets, attach drawings, pictures or notes.
- the production process is the same as describe above for the freestanding and movable dry erase board.
- the size of the dry erase board panel is of a size as to fit on to the side of a work desk or school table, and instead of a stand or wheels, fastening means, such as a clamp, is mounted underneath the frame to fasten the panel onto the desk.
Landscapes
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Drawing Aids And Blackboards (AREA)
- Building Environments (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DK201400698A DK178443B1 (en) | 2014-12-01 | 2014-12-01 | Sound absorbing dry erase board |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3031614A1 true EP3031614A1 (de) | 2016-06-15 |
Family
ID=54542137
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP15194664.7A Withdrawn EP3031614A1 (de) | 2014-12-01 | 2015-11-16 | Schallabsorbierende trockenlöschbare tafel |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP3031614A1 (de) |
DK (1) | DK178443B1 (de) |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6617002B2 (en) * | 1998-07-24 | 2003-09-09 | Minnesota Mining And Manufacturing Company | Microperforated polymeric film for sound absorption and sound absorber using same |
US20050186439A1 (en) * | 2002-02-28 | 2005-08-25 | Bert Staadecker | Dry erase board for magnets |
US20080029336A1 (en) * | 2006-06-10 | 2008-02-07 | Patrick Sigler | Acoustic panel |
EP2039841A1 (de) * | 2007-09-20 | 2009-03-25 | VS Vereinigte Spezialmöbelfabriken GmbH & Co. KG | Schrank- oder Regalmöbel |
US20090130375A1 (en) * | 2007-11-07 | 2009-05-21 | Tequipment, Inc. | Interactive board cover |
WO2011094342A1 (en) * | 2010-01-26 | 2011-08-04 | 3M Innovative Properties Company | Low ghosting dry erase article and use thereof |
US20130148357A1 (en) * | 2011-12-09 | 2013-06-13 | 3M Innovative Properties Company | Acoustic light panel |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB836390A (en) * | 1957-04-03 | 1960-06-01 | Vitreous Enamelling Corp Propr | Method of flattening and sound insulating vitreous enamelled chalkboards, architectural panels and the like |
DE29809398U1 (de) * | 1998-05-14 | 1999-09-23 | Walter Hebel GmbH & Co, 57548 Kirchen | Wandtafel mit gebogener Oberfläche |
US20100099073A1 (en) * | 2008-10-22 | 2010-04-22 | Howard Michele L | Combination chalkboard and corkboard |
US20140154661A1 (en) * | 2012-11-30 | 2014-06-05 | Corning Incorporated | Durable glass articles for use as writable erasable marker boards |
-
2014
- 2014-12-01 DK DK201400698A patent/DK178443B1/en not_active IP Right Cessation
-
2015
- 2015-11-16 EP EP15194664.7A patent/EP3031614A1/de not_active Withdrawn
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6617002B2 (en) * | 1998-07-24 | 2003-09-09 | Minnesota Mining And Manufacturing Company | Microperforated polymeric film for sound absorption and sound absorber using same |
US20050186439A1 (en) * | 2002-02-28 | 2005-08-25 | Bert Staadecker | Dry erase board for magnets |
US20080029336A1 (en) * | 2006-06-10 | 2008-02-07 | Patrick Sigler | Acoustic panel |
EP2039841A1 (de) * | 2007-09-20 | 2009-03-25 | VS Vereinigte Spezialmöbelfabriken GmbH & Co. KG | Schrank- oder Regalmöbel |
US20090130375A1 (en) * | 2007-11-07 | 2009-05-21 | Tequipment, Inc. | Interactive board cover |
WO2011094342A1 (en) * | 2010-01-26 | 2011-08-04 | 3M Innovative Properties Company | Low ghosting dry erase article and use thereof |
US20130148357A1 (en) * | 2011-12-09 | 2013-06-13 | 3M Innovative Properties Company | Acoustic light panel |
Non-Patent Citations (1)
Title |
---|
ANONYMOUS: "Rust-Oleum Multi Component Product Information Sheet", 21 July 2015 (2015-07-21), pages 11PP, XP002756766, Retrieved from the Internet <URL:http://www.rustoleum.com/MSDS/ENGLISH/241140.pdf> [retrieved on 20160420] * |
Also Published As
Publication number | Publication date |
---|---|
DK178443B1 (en) | 2016-02-29 |
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