CN205296563U - Insulation fire color steel sandwich panel - Google Patents
Insulation fire color steel sandwich panel Download PDFInfo
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- CN205296563U CN205296563U CN201520977190.2U CN201520977190U CN205296563U CN 205296563 U CN205296563 U CN 205296563U CN 201520977190 U CN201520977190 U CN 201520977190U CN 205296563 U CN205296563 U CN 205296563U
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- color steel
- sandwich plate
- steel sandwich
- corrugated plating
- insulated fire
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Abstract
The utility model discloses an insulation fire color steel sandwich panel belongs to structural lumber technical field. The utility model discloses an insulation fire color steel sandwich panel, insulation fire between and presss from both sides the buckled plate between core material and the two -layer various steel sheet including two -layer various steel sheet, and the range of buckled plate is equal to insulation fire color steel sandwich panel thickness, and the corner angle is 60 degrees, insulation fire presss from both sides the core material and fills in the space of two -layer various steel sheet and buckled plate formation, the middle evenly distributed on every inclined plane of buckled plate has the through -hole. The utility model discloses a material detachable transportation such as various steel sheet, buckled plate, a material and B material can be produced immediately, has realized that reduction cost of transportation, ectonexine combine closely and improve purpose such as life.
Description
Technical field
This utility model belongs to structural lumber technical field, is specifically related to a kind of insulated fire chromatic steel sandwich plate.
Background technology
Chromatic steel sandwich plate is a kind of to integrate load-bearing, insulation, waterproof, the novel space enclosing structure material fitted up, can be widely applied to different building needs, the multiple building field such as including industrial premises, public building, assembled house, cleaning project. Chromatic steel sandwich plate is with color painted steel strip for plane materiel, self-extinguishing type polystyrene, polyurethane, glass cotton, rock wool etc. are core, with heat-curable glue in continuous forming machine pressurized, be heating and curing, ultralight building board that deburring, fluting, the operation such as blanking are composited, thickness is typically in 25-250mm.
Chromatic steel sandwich plate has from heavy and light (1/20-1/30 for concrete roof weight), intensity is high, and (employing high intensity is base material, its anti-tensile tensile strength is up to 5600kg/cm2), insulation (its thermal conductivity value is 0.034W/mk), fast (the wet-less operation of speed of application, do not do secondary decoration, construction period can shorten more than 40%), the feature of (without incrustation, colored zinc plated steel anticorrosive coat keeps the phase at 15-20) bright in colour. Chromatic steel sandwich plate is except being applied to above-mentioned building field, and people also give full play to its feature, applies it to broader field, such as the internal partition wall of steamer, freezer, express highway sound-proof wall etc.
Existing chromatic steel sandwich plate kind includes:
(1) polystyrene foam plastics battenboard
Polystyrene foam plastics battenboard is with color steel sheet for surface layer, with flame retardant polystyrene foam plate for core, with dual-component polyurethane as cementing agent, it is combined into through laser heating pressurization, the battenboard of scale synchronous cutting, it is composited by 5 layer materials, i.e. color steel sheet-polyurethane adhesive-polystyrol plastic foam plate-polyurethane adhesive-color steel sheet.
(2) polyurethane foam plastics battenboard
Polyurethane foam plastics battenboard is with color steel sheet for surface layer, with flame-retardant polyurethane foam plastic for core, utilize continuous forming machine, after to color steel sheet die mould, at the middle spray polyurethane of two plates, (polyurethane foam is usually and sends out mixed foaming generation in high-pressure bottle with A material and B material, A material be usually combined polyether or other, B material be generally isocyanates or other), colored steel and viscoelastic polyurethane are formed composite board by sealed pressurization, i.e. polyurethane laminboard.
(3) rockwool sandwich board
Rockwool sandwich board is to make surface layer with color steel sheet, with non-combustible materials rock wool for core, is cementing agent with two-component polyurethane adhesive, through laser heating pressurization composite molding, the battenboard of scale synchronous cutting.
(4) glass cotton battenboard
Glass cotton battenboard is employing natural crystal such as quartz sand, dolomite, alabaster etc. is primary raw material, it is equipped with other and is melting into glass such as the industrial chemicals such as soda, boric acid, draw by external force, blow or get rid of into superfine fibrous material in the molten state, the sheet material being cemented to phenolic resin.
In the sandwich material of chromatic steel sandwich plate conventional at present, only rock wool, glass cotton are incombustible materials, the use in chromatic steel sandwich plate of other sandwich material very easily causes the generation of fire, and the globality of rock wool, glass cotton is poor, compressive strength is low, generally can only be used as wallboard, be not used as ceiling materials.
Additionally, in currently used color painted steel strip coating, polyvinylidene fluoride (PVDF) fluorocarbon coating owing to using the polymer with fluorine element as film-forming resin in its coating, the king making it have the resistance to atmospheric exposure of excellence, solvent resistant, contamination corrosion-resistant, anti-and good processing characteristics and become in chromatic board coating, is widely used in top-grade building exterior wall and roofing. But, there is an obvious weakness in PVDF colored steel, namely organic coating softer (its pencil hardness < F), causes that the scratch resistant performance in the course of processing is bad, it is easy to is scratched in transport and forming process.
Any of the above chromatic steel sandwich plate suffers from common technical problem:
(1) the color steel of chromatic steel sandwich plate outer layer, in order to ensure the lightweight of sheet material, generally all adopts sheet metal, and the battenboard of inside is all soft material, therefore, chromatic steel sandwich plate local pressure is bigger, such as local impact, knock, can be easy to that pit occurs;
(2) battenboard is typically all the soft material that density is little, takies volume relatively big, and cost of transportation is higher;
(3) chromatic steel sandwich plate ectonexine is all after separately producing, in conjunction with becoming chromatic steel sandwich plate, a lot of sandwich materials often produce after for a long time and are just applied to chromatic steel sandwich plate, ectonexine in conjunction with time be also performed to special handling can ensure combine compactness, if and the sandwich material production time is long, it is easy to aging, thus affecting the service life of whole chromatic steel sandwich plate.
Chinese patent publication No.: CN104631637A, the patent documentation of publication date: 2015.05.20 discloses the purified color steel sandwich panel of a kind of insulation material and preparation thereof. This insulation material is made up of light calcined magnesia, magnesium chloride, Plant fiber, glass fabric and additive, has high flame retardant, and heat conductivity can be low to moderate 0.17W/m K, has good insulation effect. This invention chromatic steel sandwich plate, including color steel battenboard main body, chromatic steel sandwich plate main body includes heat-insulating frame, and the front and rear surfaces of heat-insulating frame is coated with metal decking, the end face of heat-insulating frame is connected to side plate, and the carrying for supporting chromatic steel sandwich plate body weight is protruding and caves in. Color steel is in use, its weight acts on insulation material through side plate, act on heat-insulating frame again through insulation material, make color steel main body entirety stress, avoid the structure change because only being caused by side plate stress, therefore its structure is more firm, longer service life, and fire endurance reaches more than 3 hours. This patent application supports carrying projection and the depression of chromatic steel sandwich plate body weight by side plate, part solves chromatic steel sandwich plate local pressure and causes the technical problem of pit, but the location of production process latus inframedium and uniformly laying also improve process costs and the material cost of production.
Utility model content
1. to solve the technical problem that
Easily cave in for chromatic steel sandwich plate local pressure in prior art, volume cause greatly cost of transportation high, separately produce cause in conjunction with time need special handling and affect the problem in whole sheet material service life, this utility model provides a kind of insulated fire chromatic steel sandwich plate. It by special making structure, can separately transport and can immediately produce, it is achieved that reduce cost of transportation, ectonexine be tightly combined, can insulated fire improve the purposes such as service life.
2. technical scheme
For reaching above-mentioned purpose, technical solutions of the utility model carry out in the following manner:
A kind of insulated fire chromatic steel sandwich plate, including the corrugated plating between two-layer color steel and insulated fire sandwich material and two-layer color steel between, the amplitude of corrugated plating is equal to insulated fire chromatic steel sandwich plate thickness, and crank degree is 60 degree; Insulated fire sandwich material is filled in the space of two-layer color steel and corrugated plating formation; The centre on each inclined-plane of corrugated plating is evenly distributed with through hole.
Preferably, the joggle or clamping apparatus that arrange outside corrugated plating and in the side ports that two-layer color steel is formed it are additionally included in.
Preferably, joggle device is the concave-board being equipped with and projection plate; Clamping apparatus is public card and master card.
Preferably, the side of two-layer color steel is provided with relative interior knuckle, blocks joggle or clamping apparatus.
Preferably, insulated fire sandwich material, in two-layer color steel, adds the immediate reaction Process Production of B material again by first adding A material, and when adding B material, fire retardant first adds mix homogeneously in B material.
The processing technology of a kind of insulated fire chromatic steel sandwich plate, comprises the following steps:
A, base plate paving: first bottom color steel is tiled on the operational platform;
B, corrugated plating are laid: corrugated plating is layered on bottom color steel upper surface uniformly;
C, top board are laid: cover above corrugated plating by upper strata color steel, and corrugated plating and two-layer color steel form triangle chute;
D, sealing: seal 4 openings that two-layer color steel is formed, the reserved material hole of sealing part at each triangle chute;
E, A expect to inject: first pass through material hole and A material injects corrugated plating and the triangle chute of end face formation;
F, B expect to inject: by B material and fire retardant mix homogeneously, again through the triangle chute that B material injection corrugated plating and bottom surface are formed by material hole;
G, totally-enclosed: blocking material hole, repeatedly upset two-layer color steel, A material and B expect by through hole Homogeneous phase mixing;
H, natural foaming: chromatic steel sandwich plate is stood, natural foaming.
Preferred processing technology, also includes step I, extrudes levelling, with hydraulic pressure or oil gear, insulated fire chromatic steel sandwich plate is squeezed to the height of corrugated plating.
Preferred processing technology, in step D, arranges joggle or clamping apparatus in two the side openings being parallel to triangle chute and blocks the interior knuckle of joggle or clamping apparatus; After step H natural foaming, joggle or clamping apparatus are squeezed knuckle inside by foam, seal up this two side ends opening.
Preferred processing technology, A material is combined polyether or combination alkalescent phenol resin, and described B material is for isocyanates or low boiling alkane, wherein, combined polyether and isocyanates with the use of, combination alkalescent phenol resin and low boiling alkane with the use of; Step F and E is successively interchangeable.
Preferred processing technology, also has test and the step calculated before described step A:
-2A, test A material and B expect mixed proportion and foaming after the coefficient of expansion: first by A material and B material press 1:1 volume ratio mix, calculate A or B after foaming and expect residual ratio x, proportion coefficient computing formula is, A residual time A:B=(1-x): 1;A:B=1:(1-x during B residual); If noresidue, proportionality coefficient is 1; And the A calculating mixed proportion is expected and B material addition in container, calculating after foaming and expand volume z, if A material and B material initial volume sum are y, then the coefficient of expansion is ��=z/y;
-1A in conjunction with shot needed for each triangle chute of triangle chute volume computing: triangle chute volume is u, and each insulation chromatic steel sandwich plate intermediate cam shape chute quantity is n, then shot M=un/ �� needed for each triangle chute; The amount then injecting A material is MA=M (1-x)/(2-x); The amount injecting B material is MB=M/ (2-x).
3. beneficial effect
The technical scheme adopting this utility model to provide, compared with existing known technology, has following remarkable result:
(1) a kind of insulated fire chromatic steel sandwich plate of the present utility model, the setting of corrugated plating, take full advantage of the stability of architectonics intermediate cam structure, local pressure can be shifted to whole plate face, it is prevented effectively from the generation of concave surface during local pressure, the setting of through hole, the priority that when immediately producing for insulated fire chromatic steel sandwich plate, A material and B expect injects and Homogeneous phase mixing provides possibility, and, color steel and corrugated plating can separately transport, and take volume little, and cost of transportation effectively reduces, B material adds fire retardant, makes chromatic steel sandwich plate possess fireproof function;
(2) a kind of insulated fire chromatic steel sandwich plate of the present utility model, the setting of interior knuckle, effectively prevents joggle device or clamping apparatus extrusion insulation chromatic steel sandwich plate;
(3) a kind of insulated fire chromatic steel sandwich plate of the present utility model, the setting of joggle or clamping apparatus, improve convenience and the motility of assembling;
(4) a kind of insulated fire chromatic steel sandwich plate of the present utility model, instant production, joggle or clamping apparatus can in foaming agent expansion processes, it is extruded into interior knuckle place, and and laminboard layer seamless link, without other extra connected mode such as bonding, the fourth of the twelve Earthly Branches connects, reduce further cost of manufacture;
(5) a kind of insulated fire chromatic steel sandwich plate of the present utility model, the strong cementing viscosity produced after taking full advantage of combined polyether and isocyanates and combination alkalescent phenol resin and the foaming of low boiling alkane combination of two, in foaming agent expansion process with the bonding of outer layer color steel closely, it it is firmly seamless link, without further to process especially, further reduce cost of manufacture;
(6) a kind of insulated fire chromatic steel sandwich plate of the present utility model, carry out levelling with hydraulic pressure or oil gear, it is prevented that foaming agent expansion is excessive causes deformation, after extruding, by excessive volume by extruding return, moreover it is possible to the cementing effect of bonding of enhanced foaming and color steel;
(7) a kind of insulated fire chromatic steel sandwich plate of the present utility model, through the step of overtesting and calculating, it is possible to be prevented effectively from the waste in foaming process of A, B material and excessive expansion.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation of this utility model embodiment 3;
Fig. 3 is this utility model subwave card top view;
Fig. 4 is this utility model opening sealing state schematic diagram.
In figure: 1, color steel; 2, corrugated plating; 3, concave-board; 4, projection plate; 5, insulated fire sandwich material; 6, public card; 7, master card; 8, through hole; 9, sealing plate; 11, interior knuckle; 91, material hole.
Detailed description of the invention
For further describing this utility model, below in conjunction with accompanying drawing and example, the utility model is described in further detail:
Embodiment 1
A kind of insulated fire chromatic steel sandwich plate of this example, as it is shown in figure 1, include two-layer color steel 1 and insulated fire sandwich material 5 between, also include the corrugated plating 2 between two-layer color steel 1, the amplitude of corrugated plating 2 is 5cm, is equal to insulated fire chromatic steel sandwich plate thickness, and its crank degree is 60 degree;Insulated fire sandwich material 5 is filled in the space of two-layer color steel 1 and corrugated plating 2 formation; As it is shown on figure 3, the centre on each inclined-plane of corrugated plating 2 is evenly distributed with through hole 8: corrugated plating 2 can be formed by connecting with Z-shaped plate or W-shaped plate.
The processing technology of a kind of insulated fire chromatic steel sandwich plate of this example: comprise the following steps:
A, base plate paving: first bottom color steel 1 is tiled on the operational platform;
B, corrugated plating are laid: corrugated plating 2 is layered on bottom color steel 1 upper surface uniformly;
C, top board are laid: being covered by upper strata color steel 1 above corrugated plating 2, corrugated plating 2 and two-layer color steel 1 form triangle chute;
D, sealing: as shown in Figure 4, seal 4 openings that two-layer color steel 1 is formed, the reserved material hole 91 of sealing part at each triangle chute;
E, A expect to inject: first pass through material hole 91 and A material injects corrugated plating 2 and the triangle chute of end face formation;
F, B expect to inject: by B material and APP mix homogeneously, again through the triangle chute that B material injection corrugated plating 2 and bottom surface are formed by material hole 91;
G, totally-enclosed: blocking material hole, upset two-layer color steel 1, A material and B expect by through hole 8 Homogeneous phase mixing repeatedly;
H, natural foaming: chromatic steel sandwich plate is stood, natural foaming more than 20 minutes;
J, extrude levelling, with hydraulic pressure or oil gear, insulation chromatic steel sandwich plate is squeezed to 5cm.
A kind of insulated fire chromatic steel sandwich plate of this example, the setting of corrugated plating 2, take full advantage of the stability of architectonics intermediate cam structure, it is possible to shifted to whole plate face by local pressure, be prevented effectively from the generation of concave surface during local pressure, the setting of through hole, the priority that when immediately producing for insulated fire chromatic steel sandwich plate, A material and B expect injects and Homogeneous phase mixing provides possibility, and, color steel and corrugated plating can separately transport, taking volume little, cost of transportation effectively reduces. The addition of ammonium polyphosphate flame retardant, also makes chromatic steel sandwich plate possess fireproof function.
Embodiment 2
A kind of insulated fire chromatic steel sandwich plate of the present embodiment, basic structure is with embodiment 1, it is different in that: as shown in Figure 1, it is additionally included in corrugated plating 2 two ends the joggle device arranged in the side ports that two-layer color steel 1 is formed, joggle device is the concave-board 3 and projection plate 4 that are equipped with, and the side of two-layer color steel 1 is provided with the relative interior knuckle 11 blocking joggle device. Color steel specification is 2*1.4, and corrugated plating 2 amplitude is 5cm.
The processing technology of a kind of insulated fire chromatic steel sandwich plate of the present embodiment, basic step, with embodiment 1, thes improvement is that: A material and B expect respectively combined polyether and isocyanates. The step tested and calculate first is carried out before carrying out step A:
-2A, test combinations polyethers and isocyanates mixed proportion and foaming after the coefficient of expansion: first combined polyether and isocyanates press 1:1 volume ratio mix, combined polyether and isocyanates residual ratio x is calculated after foaming, proportion coefficient computing formula is, during combined polyether residual, combined polyether: isocyanates=(1-x): 1; During isocyanates residual, combined polyether: isocyanates=1:(1-x); If noresidue, proportionality coefficient is 1; And in container, the combined polyether and isocyanates that calculate mixed proportion are added, calculate after foaming and expand volume z, if combined polyether and isocyanates initial volume sum are y, then the coefficient of expansion is ��=z/y; In the present embodiment, through test, proportionality coefficient is 1, and the coefficient of expansion is 20;
-1A in conjunction with shot needed for each triangle chute of triangle chute volume computing: triangle chute volume is u, and each insulation chromatic steel sandwich plate intermediate cam shape chute quantity is n, then shot M=un/ �� needed for each triangle chute; The amount then injecting combined polyether is MA=M (1-x)/(2-x); The amount injecting isocyanates is MB=M/ (2-x); In the present embodiment, the defined volume of whole color steel is 2*1.4*0.05=0.14 cubic meter, forms 14 triangle chutes, then shot M=0.14/20*14=0.0005 cubic meter needed for each triangle chute altogether, namely 0.5 liter;
In step D, joggle device is set in two the side openings being parallel to triangle chute and blocks the interior knuckle 11 of joggle device; In step F, combined polyether injects: first pass through material hole and 0.5 liter of combined polyether injects the triangle chute of corrugated plating and end face formation;
G, isocyanates inject: as fire retardant, the APP accounting for isocyanate weight 10% is added mix homogeneously in 0.5 liter of isocyanates, and mixed isocyanates injects the triangle chute of corrugated plating and bottom surface formation again through material hole;
After step H natural foaming, joggle device is squeezed knuckle 11 inside by foam, seals up this two side ends opening. Finally also include step I, extrude levelling, with hydraulic means, insulated fire chromatic steel sandwich plate is squeezed to 5cm, to ensure that corrugated plating 2 is in measuring body duty.
After testing, the insulation chromatic steel sandwich plate heat conductivity��0.03W/m.K of the present embodiment.
Embodiment 3
A kind of insulated fire chromatic steel sandwich plate of the present embodiment, as in figure 2 it is shown, basic structure is with embodiment 2, is different in that: joggle device clamping apparatus replaces, and clamping apparatus is public card 6 and master card 7. The side of two-layer color steel 1 is provided with the relative interior knuckle 11 blocking clamping apparatus. A material and B material respectively combination alkalescent phenol resin and low boiling alkane; Combination alkalescent phenol resin includes alkalescent phenol resin and emulsifying agent; Low boiling alkane is preferably one or more in pentane, isopentane, normal hexane, Pentamethylene., petroleum ether, it is most preferred that for pentane-isopentane body, the present embodiment selects pentane-isopentane body;
The processing technology of a kind of insulated fire chromatic steel sandwich plate of the present embodiment, it is possible to step E and F is successively exchanged, first carries out the step tested and calculate before carrying out step A:
-2A, test combinations alkalescent phenol resin and pentane-isopentane body mixed proportion and foaming after the coefficient of expansion: first will combination alkalescent phenol resin and pentane-isopentane body press 1:1 volume ratio mix, combination alkalescent phenol resin and pentane-isopentane body residual ratio x is calculated after foaming, when proportion coefficient computing formula is for combination alkalescent phenol resin residual, combine alkalescent phenol resin: pentane-isopentane body=(1-x): 1; During pentane-isopentane body residual, combine alkalescent phenol resin: pentane-isopentane body=1:(1-x); If noresidue, proportionality coefficient is 1; And in container, the combination alkalescent phenol resin and pentane-isopentane body that calculate mixed proportion are added, calculate after foaming and expand volume z, if combination alkalescent phenol resin and pentane-isopentane body initial volume sum are y, then the coefficient of expansion is ��=z/y; In the present embodiment, through test, proportionality coefficient is 1, and the coefficient of expansion is 25;
-1A in conjunction with shot needed for each triangle chute of triangle chute volume computing: triangle chute volume is u, and each insulation chromatic steel sandwich plate intermediate cam shape chute quantity is n, then shot M=un/ �� needed for each triangle chute;The amount then injecting combination alkalescent phenol resin is MA=M (1-x)/(2-x); The amount injecting pentane-isopentane body is MB=M/ (2-x); In the present embodiment, the defined volume of whole color steel is 2*1.4*0.05=0.14 cubic meter, forms 14 triangle chutes, then shot M=0.14/25*14=0.0004 cubic meter needed for each triangle chute altogether, namely 0.4 liter.
In step D, clamping apparatus is set in two the side openings being parallel to triangle chute and blocks the interior knuckle 11 of clamping apparatus; In step F, combination alkalescent phenol resin injects: first passes through material hole 91 and combines the triangle chute of alkalescent phenol resin injection corrugated plating 2 and end face formation by 0.4 liter;
G, pentane-isopentane body injects: as fire retardant, the APP accounting for pentane-isopentane body weight 10% is added mix homogeneously in 0.4 liter of pentane-isopentane body, is injected into corrugated plating 2 and the triangle chute of bottom surface formation again through material hole 91;
After step H natural foaming, clamping apparatus is squeezed knuckle 11 inside by foam, seals up this two side ends opening. Finally also include step I, extrude levelling, with hydraulic means, insulated fire chromatic steel sandwich plate is squeezed to 5cm, to ensure that corrugated plating 2 is in measuring body duty.
After testing, the insulation chromatic steel sandwich plate heat conductivity��0.025W/m.K of the present embodiment.
Claims (4)
1. an insulated fire chromatic steel sandwich plate, including two-layer color steel (1) and insulated fire sandwich material (5) between, it is characterized in that, also include the corrugated plating (2) between two-layer color steel (1), the amplitude of described corrugated plating (2) is equal to insulated fire chromatic steel sandwich plate thickness, and crank degree is 60 degree; In the space that described insulated fire sandwich material (5) is filled in two-layer color steel (1) and corrugated plating (2) is formed; The centre on described corrugated plating (2) each inclined-plane is evenly distributed with through hole (8).
2. insulated fire chromatic steel sandwich plate according to claim 1, it is characterised in that: it is additionally included in corrugated plating (2) two ends the joggle arranged in the side ports that two-layer color steel (1) is formed or clamping apparatus.
3. insulated fire chromatic steel sandwich plate according to claim 2, it is characterised in that: described joggle device is the concave-board (3) and projection plate (4) that are equipped with; Described clamping apparatus is public card (6) and master card (7).
4. insulated fire chromatic steel sandwich plate according to claim 2, it is characterised in that: the side of described two-layer color steel (1) is provided with the relative interior knuckle (11) blocking joggle or clamping apparatus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520977190.2U CN205296563U (en) | 2015-11-26 | 2015-11-26 | Insulation fire color steel sandwich panel |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520977190.2U CN205296563U (en) | 2015-11-26 | 2015-11-26 | Insulation fire color steel sandwich panel |
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| CN205296563U true CN205296563U (en) | 2016-06-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105350709A (en) * | 2015-11-26 | 2016-02-24 | 安徽继宏环保科技有限公司 | Heat-insulation fireproof color steel sandwich board and manufacturing process thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105350709A (en) * | 2015-11-26 | 2016-02-24 | 安徽继宏环保科技有限公司 | Heat-insulation fireproof color steel sandwich board and manufacturing process thereof |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160608 Termination date: 20201126 |