CN105421653A - Color steel plate - Google Patents
Color steel plate Download PDFInfo
- Publication number
- CN105421653A CN105421653A CN201510751142.6A CN201510751142A CN105421653A CN 105421653 A CN105421653 A CN 105421653A CN 201510751142 A CN201510751142 A CN 201510751142A CN 105421653 A CN105421653 A CN 105421653A
- Authority
- CN
- China
- Prior art keywords
- color steel
- steel
- steel plate
- centimetres
- color
- 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.)
- Pending
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 109
- 239000010959 steel Substances 0.000 title claims abstract description 109
- 230000001413 cellular effect Effects 0.000 claims abstract description 24
- 239000011490 mineral wool Substances 0.000 claims abstract description 21
- 238000010521 absorption reaction Methods 0.000 claims abstract description 14
- 239000004745 nonwoven fabric Substances 0.000 claims abstract description 11
- 230000002265 prevention Effects 0.000 claims description 47
- 230000005855 radiation Effects 0.000 claims description 19
- 239000012528 membrane Substances 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- 229920006264 polyurethane film Polymers 0.000 claims description 5
- 229910001297 Zn alloy Inorganic materials 0.000 claims description 3
- FJMNNXLGOUYVHO-UHFFFAOYSA-N aluminum zinc Chemical compound [Al].[Zn] FJMNNXLGOUYVHO-UHFFFAOYSA-N 0.000 claims description 3
- 230000003471 anti-radiation Effects 0.000 abstract description 6
- 230000006870 function Effects 0.000 abstract description 2
- 238000009413 insulation Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 14
- 238000009434 installation Methods 0.000 description 5
- 239000000428 dust Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000000758 substrate Substances 0.000 description 4
- 230000005611 electricity Effects 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 229920000742 Cotton Polymers 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 208000019155 Radiation injury Diseases 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000004049 embossing Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004079 fireproofing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 238000005246 galvanizing Methods 0.000 description 1
- 210000004209 hair Anatomy 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
- E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
- E04C2/26—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups
- E04C2/284—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups at least one of the materials being insulating
-
- 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
- E04B1/92—Protection against other undesired influences or dangers
-
- 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
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/94—Protection against other undesired influences or dangers against fire
- E04B1/941—Building elements specially adapted therefor
- E04B1/942—Building elements specially adapted therefor slab-shaped
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
- E04C2/30—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
- E04C2/30—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure
- E04C2/34—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure composed of two or more spaced sheet-like parts
- E04C2/36—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure composed of two or more spaced sheet-like parts spaced apart by transversely-placed strip material, e.g. honeycomb panels
- E04C2/365—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure composed of two or more spaced sheet-like parts spaced apart by transversely-placed strip material, e.g. honeycomb panels by honeycomb structures
-
- 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
- E04B1/92—Protection against other undesired influences or dangers
- E04B2001/925—Protection against harmful electro-magnetic or radio-active radiations, e.g. X-rays
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Electromagnetism (AREA)
- Acoustics & Sound (AREA)
- Building Environments (AREA)
Abstract
The invention discloses a color steel plate. According to the technical scheme, the color steel plate comprises two steel plates and strip steel for connecting the edges of the two steel plates. A fireproof rock wool core plate is arranged between the two steel plates, anti-radiation films are arranged on the two sides of the fireproof rock wool core plate, cellular plates are arranged on the outer sides of the anti-radiation films, anti-static films are arranged on the outer surfaces of the steel plates, sound absorption holes are formed in the steel plates and the anti-static films, and non-woven fabric is arranged between the cellular plates and the steel plates. Compared with an existing color steel plate, the color steel plate has the functions of good fireproofness, anti-radiation performance, sound insulation and anti-static performance, and the problem that the existing color steel plate cannot be applied to special plants is solved.
Description
Technical field
The present invention relates to a kind of sheet material, in particular, it relates to a kind of color steel.
Background technology
The substrate of color steel is cold-rolled substrate, hot dip galvanizing substrate or electrogalvanizing substrate.The surface state of color steel can be divided into clad plate, matrixes for embossing and printing plate, color steel is widely used in industry such as building household electrical appliances and communications and transportation etc., be mainly used in steel-structure factory building, airport, the roof wall surface of storehouse and the industry such as freezing and commercial building and door etc. for builing industry, civilian construction adopt the less of color steel.It and plastic-steel are distinguished and are that the formation of material is different. and magnet can be inhaled.
Modern architecture moulding is more and more novel unique, meanwhile also more harsh to the performance of roofing materials, both required that building materials were specious, durable convenient again, be convenient to in-site installation, profiled sheet is high from heavy and light, intensity with it, good waterproof, sound insulation, anti-seismic performance, becomes the constructional materials using now and have a large capacity and a wide range.But when applying in the factory building of some particular/special requirements, need to have excellent fire line, anti-radiation, sound-proofing and static electricity resistance etc., existing color steel does not often reach requirement.And lack good fire line the safety of factory building must be caused to be difficult to ensure, the safety of workman is also difficult to guarantee; Lack good anti-radiation and can cause radiation injury to the health of workman, or comparatively serious to the radiation of environment, cause environment pollution; Lack soundproof effect, then cause noise pollution, the hearing of workman can be made influenced on the one hand, the resident around factory building can be made disturbed on the other hand; Lack static electricity resistance, then easily cause potential safety hazard.
Summary of the invention
For the deficiency that prior art exists, the object of the present invention is to provide and a kind ofly there is excellent fire line, anti-radiation, the color steel of sound-proofing and static electricity resistance.
For achieving the above object, the invention provides following technical scheme: a kind of color steel, comprise two block plates and the band steel for being connected two steel plate edges, fire prevention rock wool central layer is provided with between two steel plates, be provided with radiation prevention film in the both sides of fire prevention rock wool central layer, be provided with cellular board in the outside of described radiation prevention film, described steel plate external surface is provided with electrostatic prevention film, described steel plate and described electrostatic prevention film are equipped with sound-absorption hole, between described cellular board and described steel plate, are provided with non-woven fabrics.
Preferably, described radiation prevention film is nanoporous metal membrane.
Preferably, described electrostatic prevention film is polyurethane film.
Preferably, described steel plate adopts zinc-plated color steel sheet, aluminum-zinc alloy color steel sheet or aludip.
Preferably, described band steel is provided with some installing holes.
Preferably, described installing hole is strip hole.
Preferably, described sound-absorption hole is circular hole.
Preferably, the thickness of described fire prevention rock wool central layer is between 10 centimetres to 20 centimetres.
Preferably, the thickness of described steel plate is between 0.2 centimetre to 2 centimetres.
Preferably, the thickness of described cellular board is between 2 centimetres to 10 centimetres.
The present invention has following advantage: the fire prevention rock wool central layer of color steel of the present invention has fireproofing function, radiation prevention film has radiation-resistant effect, cellular board has the effect of sound-absorbing, electrostatic prevention film has the effect of antistatic, the sound-absorption hole that steel plate and electrostatic prevention film are offered can improve the sound-absorbing effect of this color steel further, and between cellular board and described steel plate, be provided with non-woven fabrics, there is dust-proof effect, and this non-woven fabrics can prevent the hair shoulder of preventing fires in rock cotton board from exposing outside steel plate.Wherein, nanoporous metal membrane makes the rejection rate of solar energy be greater than 65%, but the transmitance of visible ray can not be less than 75%, rising is too fast because solar radiation causes too by force interior temperature effectively to prevent summer, slow down the heat waste of indoor in winter, avoid indoor to occur the phenomenon that hotter winter in summer is colder.Polyurethane film can prevent electrostatic, makes surface of steel plate can not dust suction again, keeps the sanitation and hygiene of surface of steel plate.Moreover the installing hole that band steel is arranged can facilitate the installation of this color steel, makes the mounting structure of adjacent color steel more stable, and strip hole has convenient feature of installing, and makes when installation color steel convenient.In addition, sound-absorption hole is circular hole, not easily forms burr, and the edge of sound-absorption hole is rounder and more smooth, has more safety.The thickness of fire prevention rock wool central layer is between 10 centimetres to 20 centimetres, not only has good flameproof effect, and can ensure the lighter weight of this color steel.The thickness of steel plate is between 0.2 centimetre to 2 centimetres, can not only ensure the support strength of this color steel, and the lighter weight of this color steel.The thickness of cellular board is between 2 centimetres to 10 centimetres, can not only ensure good sound-absorbing effect, can also ensure that the thickness of this color steel is unlikely to blocked up.Moreover, not simple superposition between above each plate, order wherein has strict requirement, why fire prevention rock wool central layer is placed on centre, that individual layer is better than the flameproof effect of multilayer because fire prevention rock cotton board should not be arranged to multilayer, the fire prevention rock wool central layer of same thickness; Why radiation prevention film is arranged on fire prevention rock wool central layer both sides, being to make cellular board have sound-absorbing effect, can not blocking the sound absorption qualities of cellular board, so radiation prevention film needs to be arranged on inside cellular board; And antistatic needs to carry out between surface of steel plate, otherwise the sanitation and hygiene of surface of steel plate can not be ensured; Non-woven fabrics is arranged on the planeness that can ensure non-woven fabrics between steel plate and cellular board, makes it fit tightly in steel plate, lived by Interal fixation, and can prevent dust from entering inside steel plate.
Accompanying drawing explanation
Fig. 1 is the structural representation of color steel of the present invention;
Fig. 2 is the sectional view of color steel of the present invention;
Fig. 3 is the lateral view of color steel of the present invention.
In figure: 1, electrostatic prevention film; 11, sound-absorption hole; 2, steel plate; 3, non-woven fabrics; 4, cellular board; 5, radiation prevention film; 6, fire prevention rock wool central layer; 7, steel is with; 71, installing hole.
Detailed description of the invention
With reference to shown in accompanying drawing, color steel of the present invention is further illustrated.
Embodiment: a kind of color steel, comprise two block plates 2 and the band steel 7 for being connected two steel plate 2 edges, fire prevention rock wool central layer 6 is provided with between two steel plates 2, radiation prevention film 5 is provided with in the both sides of fire prevention rock wool central layer 6, cellular board 4 is provided with in the outside of radiation prevention film 5, steel plate 2 external surface is provided with electrostatic prevention film 1, steel plate 2 and electrostatic prevention film 1 is equipped with sound-absorption hole 11, is provided with non-woven fabrics 3 between cellular board 4 and steel plate 2.
Wherein, steel plate 2 adopts zinc-plated color steel sheet 2, aluminum-zinc alloy color steel sheet 2 or aludip 2.
Radiation prevention film 5 is nanoporous metal membrane, nanoporous metal membrane makes the rejection rate of solar energy be greater than 65%, but the transmitance of visible ray can not be less than 75%, rising is too fast because solar radiation causes too by force interior temperature effectively to prevent summer, slow down the heat waste of indoor in winter, avoid indoor to occur the phenomenon that hotter winter in summer is colder.
Electrostatic prevention film 1 is polyurethane film, and polyurethane film can prevent electrostatic, makes steel plate 2 surface can not dust suction again, keeps the sanitation and hygiene on steel plate 2 surface.
Secondly, band steel 7 is provided with some installing holes 71, can facilitate the installation of this color steel, make the mounting structure of adjacent color steel more stable, and strip hole has convenient feature of installing, and makes when installation color steel convenient.
Wherein, sound-absorption hole 11 is circular hole, not easily forms burr, and the edge of sound-absorption hole 11 is rounder and more smooth, has more safety.
The thickness of fire prevention rock wool central layer 6 is 10 centimetres or 15 centimetres or 20 centimetres, like this, not only has good flameproof effect, and can ensure the lighter weight of this color steel.The thickness of steel plate 2 is 0.2 centimetre or 1 centimetre or 2 centimetres, can not only ensure the support strength of this color steel, can also ensure the lighter weight of this color steel.
Wherein, cellular board 4 is honeycomb aluminum plate or honeycomb cardboard, preferably uses honeycomb aluminum plate, its structural strength is higher, and fireproof performance is better, and the thickness of cellular board 4 is between 2 centimetres to 10 centimetres, good sound-absorbing effect can not only be ensured, can also ensure that the thickness of this color steel is unlikely to blocked up.
Moreover, not simple superposition between above each plate, order wherein has strict requirement, why fire prevention rock wool central layer 6 is placed on centre, that individual layer is better than the flameproof effect of multilayer because fire prevention rock wool central layer 6 should not be arranged to multilayer, the fire prevention rock wool central layer 6 of same thickness; Why radiation prevention film 5 is arranged on fire prevention rock wool central layer 6 both sides, and be to make cellular board 4 have better sound-absorbing effect, make it not affect the sound absorption qualities of cellular board 4, thus radiation prevention film 5 needs to be arranged on inside cellular board 4; And antistatic needs to carry out between steel plate 2 surface, otherwise the sanitation and hygiene on steel plate 2 surface can not be ensured; Non-woven fabrics 3 is arranged on the planeness that can ensure non-woven fabrics 3 between steel plate 2 and cellular board 4, makes it fit tightly in steel plate 2, fixed by steel plate 2, and can prevent dust from entering inside steel plate 2.
The above is only the preferred embodiment of the present invention, protection scope of the present invention be not only confined to above-described embodiment, and all technical schemes belonged under thinking of the present invention all belong to protection scope of the present invention.It should be pointed out that for those skilled in the art, some improvements and modifications without departing from the principles of the present invention, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1. a color steel, comprise two block plates and the band steel for being connected two steel plate edges, fire prevention rock wool central layer is provided with between two steel plates, it is characterized in that: be provided with radiation prevention film in the both sides of fire prevention rock wool central layer, cellular board is provided with in the outside of described radiation prevention film, described steel plate external surface is provided with electrostatic prevention film, described steel plate and described electrostatic prevention film is equipped with sound-absorption hole, is provided with non-woven fabrics between described cellular board and described steel plate.
2. color steel according to claim 1, is characterized in that: described radiation prevention film is nanoporous metal membrane.
3. color steel according to claim 1, is characterized in that: described electrostatic prevention film is polyurethane film.
4. color steel according to claim 1, is characterized in that: described steel plate is the one in zinc-plated color steel sheet, aluminum-zinc alloy color steel sheet or aludip.
5. color steel according to claim 1, is characterized in that: described band steel is provided with some installing holes.
6. color steel according to claim 5, is characterized in that: described installing hole is strip hole.
7. color steel according to claim 1, is characterized in that: described sound-absorption hole is circular hole.
8. color steel as claimed in any of claims 1 to 7, is characterized in that: the thickness of described fire prevention rock wool central layer is between 10 centimetres to 20 centimetres.
9. color steel as claimed in any of claims 1 to 7, is characterized in that: the thickness of described steel plate is between 0.2 centimetre to 2 centimetres.
10. color steel as claimed in any of claims 1 to 7, is characterized in that: the thickness of described cellular board is between 2 centimetres to 10 centimetres.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510751142.6A CN105421653A (en) | 2015-11-06 | 2015-11-06 | Color steel plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510751142.6A CN105421653A (en) | 2015-11-06 | 2015-11-06 | Color steel plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105421653A true CN105421653A (en) | 2016-03-23 |
Family
ID=55500158
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510751142.6A Pending CN105421653A (en) | 2015-11-06 | 2015-11-06 | Color steel plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105421653A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI647361B (en) * | 2016-10-05 | 2019-01-11 | 奇想創造事業股份有限公司 | Lightweight solar cell module building material and soundproof wall with the building material |
| CN109252609A (en) * | 2018-08-10 | 2019-01-22 | 安徽辰航新材料科技有限公司 | Aluminum alloy sound-absorbing radiation-absorbing ceiling board |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6471947A (en) * | 1987-09-10 | 1989-03-16 | Matsushita Electric Works Ltd | Sound-insulating panel |
| CN202866036U (en) * | 2012-10-15 | 2013-04-10 | 昆山长泰钢品有限公司 | Heat preservation color steel plate |
| CN103132645A (en) * | 2012-12-10 | 2013-06-05 | 广西交河建材科技有限公司 | Rack wool color steel sandwich board |
| CN204703387U (en) * | 2015-05-09 | 2015-10-14 | 吴江市宏达净化彩板有限公司 | Color steel |
| CN204701195U (en) * | 2015-05-09 | 2015-10-14 | 吴江市宏达净化彩板有限公司 | Battenboard |
-
2015
- 2015-11-06 CN CN201510751142.6A patent/CN105421653A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6471947A (en) * | 1987-09-10 | 1989-03-16 | Matsushita Electric Works Ltd | Sound-insulating panel |
| CN202866036U (en) * | 2012-10-15 | 2013-04-10 | 昆山长泰钢品有限公司 | Heat preservation color steel plate |
| CN103132645A (en) * | 2012-12-10 | 2013-06-05 | 广西交河建材科技有限公司 | Rack wool color steel sandwich board |
| CN204703387U (en) * | 2015-05-09 | 2015-10-14 | 吴江市宏达净化彩板有限公司 | Color steel |
| CN204701195U (en) * | 2015-05-09 | 2015-10-14 | 吴江市宏达净化彩板有限公司 | Battenboard |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI647361B (en) * | 2016-10-05 | 2019-01-11 | 奇想創造事業股份有限公司 | Lightweight solar cell module building material and soundproof wall with the building material |
| CN109252609A (en) * | 2018-08-10 | 2019-01-22 | 安徽辰航新材料科技有限公司 | Aluminum alloy sound-absorbing radiation-absorbing ceiling board |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160323 |
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| WD01 | Invention patent application deemed withdrawn after publication |