EP3031614A1 - Schallabsorbierende trockenlöschbare tafel - Google Patents

Schallabsorbierende trockenlöschbare tafel Download PDF

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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Withdrawn
Application number
EP15194664.7A
Other languages
English (en)
French (fr)
Inventor
Henrik Kaa Andersen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dampa ApS
Original Assignee
Dampa ApS
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Dampa ApS filed Critical Dampa ApS
Publication of EP3031614A1 publication Critical patent/EP3031614A1/de
Withdrawn legal-status Critical Current

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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)
EP15194664.7A 2014-12-01 2015-11-16 Schallabsorbierende trockenlöschbare tafel Withdrawn EP3031614A1 (de)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Patent Citations (7)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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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