CN206015932U - A kind of fire-resistant light granules and the wallboard of filling polyurethane - Google Patents
A kind of fire-resistant light granules and the wallboard of filling polyurethane Download PDFInfo
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- CN206015932U CN206015932U CN201620486676.0U CN201620486676U CN206015932U CN 206015932 U CN206015932 U CN 206015932U CN 201620486676 U CN201620486676 U CN 201620486676U CN 206015932 U CN206015932 U CN 206015932U
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Abstract
The utility model discloses the wallboard of a kind of fire-resistant light granules and filling polyurethane, including bracing frame, the first edge strip, the second edge strip, shingle nail and heat-insulation layer；Two bracing frames are be arranged in parallel top surface and bottom surface as wallboard respectively up and down；The two ends of the first edge strip and the second edge strip are separately fixed at two bracing frame two ends, and used as two joint faces of wallboard, adjacent wall board by the first edge strip and the splicing of the second edge strip and forms broken line sound insulation thermal resistance path；Bracing frame, the first edge strip and the second edge strip are spliced into Wallboard-framework；Shingle nail is arranged on Wallboard-framework both sides, is spliced into hollow structure；Insulation material is fire-resistant light granules and polyurethane foam material, and synchronously fills full hollow structure.The utility model is related to building field, and a kind of heat-and sound-insulating performance of the utility model offer is good, fire resistance is high, a kind of wallboard of reusable edible.
Description
Technical field
The utility model is related to building field, more particularly to a kind of wallboard of fire-resistant light granules filling polyurethane.
Background technology
Standardization, industrialization are one of most important links in security housing development.Rate in Housing Guarantee
First realize standardized designs, industrialized production, prefabricated construction, information system management, be both realize security housing improve quality,
The important means of the requirements such as reduction of erection time, control cost, and core and the important channel of China's acceleration housing industry upgrading.
Conventional house builds the building of especially metal structure and one-piece casting cement structures, except structural load-bearing pillar
It is empty inside its building, is needed according to concrete dwelling use and inner wall is set, overall floor is divided into work(one by one
Can property room.Existing inner wall makes and usually carries out site operation using light metal keel and plasterboard, and this causes construction existing
In disorder, and the building waste such as waste material, leftover pieces is excessive, it is not appropriate for that body of wall is removable to be recycled, and live recruitment
The larger, cost of labor of amount is too high, construction dimensional accuracy is relatively low.It is response country to the environmental protection of novel building, batch production, fast
Speedization, the policy guidelines of dismantled and assembled, closed matereial cycle, greatly develop novel fabricated wall technology, according to architect's scale
Very little set conventional modulus, the large-scale production in the factory of interior outside integrated function body of wall is completed, and is transported to building construction existing
As long as field is fixedly mounted between upper and lower floor.Such as patent CN201310133598.7, CN200920019709 etc. is to adopt
Fitted with both sides concrete slab/calcium silicate board with microporous assembly with polyurethane foam slabs.These technical schemes are difficult to as carrying additionally weight
And embedded metal sheet material or shape, it is also difficult to realize that sealing is combined and spliced between body of wall overall tightness and body of wall, plate
Between material, tiling assembly causes laminating between plate to leave gap air-and water-permeable.
In addition, other are with rock wool blanket, rock wool plate, foaming perlite plate, foamed ceramic plate, foamed glass plate etc.
The body of wall of inorganic foamed plate bonding complex shingle panel in outside for intermediate insulating layer, its intermediate insulating layer are typically small, one piece
Body of wall may have 2.5 meters high to 5 meters of spring layer, and this intermediate insulating layer needs a large amount of adhesives with the bonding of both sides shingle nail, increase
Weight and cost is greatly increased, and rock wool blanket itself needs without intensity plus nail rock wool nail is fixed and a large amount of adhesives are fixed.For
In a large number using organic insulation materials such as styrofoam, polyurethane sheet or foam filled, phenolic foam plates as the wall of moderate soak material
The application of body is restricted because fire resistance is low, is that outside this both sides are compound or the body of wall of the making such as casting cement, flyash,
Sizing needs the long weight of curing time to greatly increase, site operation inconvenience.
Utility model content
The purpose of this utility model is to provide that a kind of heat-and sound-insulating performance is good, fire resistance is high, reusable edible a kind of resistance to
Fiery light granules and the wallboard of polyurethane foam filling.
To achieve the above object of the invention, the utility model discloses the wall of a kind of fire-resistant light granules and filling polyurethane
Plate, being fixed on the outside of construction wall is used for exterior-wall heat insulation, or is assembled into construction wall, including bracing frame, the first edge strip, second
Edge strip, shingle nail and heat-insulation layer；
Support frame as described above is strip section bar, and two support frames as described above are be arranged in parallel top surface and bottom as wallboard respectively up and down
Face；
First edge strip and the second edge strip are all strip section bar, and its two ends is separately fixed at two support frames as described above two
End, used as two joint faces of wallboard, adjacent wall board by the first edge strip and the splicing of the second edge strip and forms broken line sound insulation thermal resistance road
Footpath；
Described two bracing frames, the first edge strip and the second edge strip are spliced into Wallboard-framework；
The shingle nail is arranged on the Wallboard-framework both sides, and two sides of two pieces of shingle nails as wallboard are spelled
It is connected into hollow structure；
The insulation material is fire-resistant light granules and polyurethane foam material, and the fire-resistant light granules and polyurethane are sent out
Foam material is sprayed respectively, and the full hollow structure of synchronous filling.
Preferably, the fire-resistant light granules are foaming perlite particle, expanded perlite, hollow glass particles, foaming
Glass particle, glass microballoon, expanded vermiculite.
Preferably, the polyurethane foam material is made up of PPG or PEPA component A and isocyanic acid
The B component that ester is constituted is formed by mixed foaming, and the component A also includes fire retardant, foaming agent, foam modifier catalyst.
Preferably, first edge strip and the second edge strip are both provided with multi-stage stairs face, and the first edge strip and the second edge strip
Fit to form splicing by multistage cascaded surface.
Preferably, the section of first edge strip and the second edge strip is semi-surrounding, full encirclement or solid construction.
Preferably, support frame as described above is c-type or the strip section bar of rectangular cross section structure, and two support frames as described above are corresponding up and down
Arrange.
Preferably, support frame as described above, the first edge strip and the second edge strip are plasterboard, calcium silicate board, glass magnesium board, mineral wool
Plate, ceramic plate, PLASTIC LAMINATED, abatvoix, carbon felt plate, fiber reinforced cement board, foamed ceramic plate, foamed glass plate, cement board,
Pearlite slab, medium-density plate, Europe deals, metallic plate, inorganic fiberboard, wood-plastic board or woodwork plate.
Preferably, the shingle nail stacks together for one or more layers sheet material is compound.
Preferably, the sheet material is marble slab, plasterboard, calcium silicate board, glass magnesium board, ceramic wafer, pottery clay plates, fiberglass
Plate, block of glass wool, ceramic plate, PLASTIC LAMINATED, abatvoix, carbon felt plate, fiber reinforced cement board, foamed ceramic plate, foamed glass plate, send out
Soaked mud plate, pearlite slab, medium-density plate, Europe deals, metallic plate, wood-plastic board or woodwork plate.
Preferably, the shingle nail stacks together for one or more layers sheet material is compound, and its outer layer sheet material is water-proof sheet material.
Preferably, the packed density of the insulation material is 50-500Kg/m3.
Compared to the prior art the utility model, has the advantages that：
Synchronously spraying is filled in square box for the utility model fire-resistant light granules and polyurethane foam, and polyurethane foam is resistance to
Fiery light granules, both sides shingle nail and wall skeleton bonding is integrally formed, and insulation material is integrally formed without piece, is carried significantly
High integral wall intensity and heat insulating and sound insulating performance；Spray pattern avoids foaming pearl rock beam, foamed ceramic plate, foamed glass
Plate, rock cotton board need to cut and position, splice, mating formation etc. a large amount of operations as packed bed etc., especially in pre-buried electric-controlled switch
And the position such as pipeline, greatly save man-hour and expense.
The utility model occupies most spaces with the fire-resistant light granules that A levels are not fired, and greatly improves flame-retardant
Performance, and polyurethane foam forms waterproof layer, is particularly suited for water-fast Mold proof wall needs, heat-and sound-insulating effect is good, combination property
High and cost is significantly reduced.
Shingle nail of the present utility model can for one or more layers compound sound insulation to realize body of wall, insulation, fire prevention, fill
Decorations function.
Description of the drawings
Fig. 1 is inorfil composite external wall insulation schematic perspective view；
Fig. 2 is inorfil composite external wall insulation schematic cross-section；
Fig. 3 is the first edge strip and the second edge strip splicing state schematic cross-section；
Fig. 4 is the first edge strip of full encirclement and the second edge strip splicing state schematic cross-section；
Fig. 5 is solid first edge strip and the second edge strip splicing state schematic cross-section；
Fig. 6 is open square box structure schematic diagram；
Fig. 7 is insulation material spraying square box structure schematic diagram；
Fig. 8 is that schematic diagram fixed by open square box structure and mould；
Fig. 9 is the mould and wallboard schematic diagram after assembly completely.
Reference：1- bracing frames, the first edge strips of 2-, 201- splice plates, the first wing plates of 202-, the second wing plates of 203-, 3-
The all templates of second edge strip, 301- jointing plates, the 3rd wing plates of 302-, the 4th wing plates of 303-, 4- shingle nails, 5- insulation materials, 601-,
602- upper die plates, 603- lower templates, 7- fire-resistant light granules spray guns, 8-A component delivery outlets, 9-B component delivery outlets.
Specific embodiment
For making goal of the invention of the present utility model, technical scheme and beneficial effect of greater clarity, below in conjunction with the accompanying drawings
Embodiment of the present utility model is illustrated, it should be noted that in the case where not conflicting, embodiment in the application and
Feature in embodiment mutually can be combined.
Fig. 1 and Fig. 2 is the wallboard that fire-resistant light granules and polyurethane foam material are filled, and polylith wallboard is installed in building wall
External side, can be used for exterior-wall heat insulation；Multiple wallboards can mutually be spliced into whole face wall body, form building partition.Fig. 1 is that fire resisting is light
Matter particle and polyurethane foam material filled-in panel schematic perspective view, as shown in figure 1, fire-resistant light granules and polyurethane foam material
The wallboard of material filling includes bracing frame 1, the first edge strip 2, the second edge strip 3, shingle nail 4 and insulation material 5.Bracing frame 1 is strip
Section bar, two bracing frames 1 are be arranged in parallel respectively up and down, the top surface and bottom surface as wallboard；1 section of bracing frame is preferably C-shaped, bag
Include base plate and two side plates, the side plate of two bracing frames 1 is oppositely arranged, bracing frame also can rectangular wait rule and intensity high cut
Face image；The two ends of bracing frame 1 are processed into identical with the first edge strip 2 and 3 section of the second edge strip respectively, are conveniently connected with each other solid
Fixed.First edge strip 2 and the second edge strip 3 are all strip section bar, are each separately fixed at 1 corresponding two ends of bracing frame, as wallboard
Two joint faces.3 wall skeletons for being connected into quadrangle spelled by two bracing frames 1 and connected first edge strip 2 and the second connection,
Skeleton structure firm stable, shingle nail 4 are arranged on wall skeleton both sides, and two pieces of shingle nails 4 are spliced into as two sides of wallboard
Hollow structure.It is plasterboard, calcium silicate board, glass magnesium board, block of glass wool, pottery that bracing frame 1, the first edge strip 2 and the second connection spell 3
Plate, PLASTIC LAMINATED, abatvoix, carbon felt plate, fiber reinforced cement board, foamed ceramic plate, foamed glass plate, cement board, pearl
Rock beam, medium-density plate, Europe deals, metallic plate, inorganic fiberboard, wood-plastic board or woodwork plate.Insulation material 5 is synchronous even application
The fire-resistant light granules being filled in hollow structure and polyurethane foam material；Fire-resistant light granules be foaming perlite particle,
Expanded perlite, hollow glass particles, foamed glass particle, glass microballoon, expanded vermiculite；The polyurethane foam material is by gathering
The B component that the component A and isocyanates that ethoxylated polyhydric alcohol or PEPA are constituted is constituted is formed by mixed foaming, the A groups
Dividing also includes fire retardant, foaming agent, foam modifier catalyst.The packed density of insulation material 5 is 50-500Kg/m3.Work as wall
When plate is assembled into partition wall, its bracing frame is fixed with corresponding top board and base plate respectively, and two adjacent wall boards can pass through 2 He of the first edge strip
Second edge strip 3 splices, and needs to be thermally shielded sound insulation design in adjacent wallboard stitching portion, and Fig. 2 is assembled inorfil wall
Plate schematic cross-section, as shown in Fig. 2 the first edge strip 2 and the second connection spelling 3 are multi-stage stairs as the surface in wall connecting face
Face, also can will be arranged to other Tortuous Surfaces.Two adjacent wall boards can be spliced and many by the first edge strip 2 and the second edge strip 3
Broken line sound insulation thermal resistance path is formed at level step surface.When wallboard is used as exterior-wall heat insulation, splice between wallboard mutually, bracing frame,
, all as its splice, it is simple that the first edge strip 2 and the second edge strip 3 then can be processed as section for one edge strip 2 and the second edge strip 3
Strip section bar, such as c-type etc..Shingle nail 4 is composited for three ply board material, is alternatively that one or more layers sheet material is compound to stack together,
Sheet material can be plasterboard, calcium silicate board, glass magnesium board, block of glass wool, ceramic plate, PLASTIC LAMINATED, abatvoix, carbon felt plate, fiber reinforcement water
Mud plate, foamed ceramic plate, foamed glass plate, cement board, pearlite slab, medium-density plate, Europe deals, metallic plate, wood-plastic board
Or woodwork plate.In addition, when wallboard is used as exterior-wall heat insulation, the outer layer sheet material of its shingle nail 4 is water-proof sheet material.
Fig. 3 is the first edge strip and the second edge strip splicing state schematic cross-section, as shown in figure 3, the first edge strip 2 is semi-surrounding
Structure, connects respectively including splice plate 201, the first wing plate 202 and the second wing plate 203, the first wing plate 202 and the second wing plate 203
In the both sides of splice plate 201, splice plate 201 is provided with right-angle bending at two, makes the first edge strip 2 form three-level right angle platform terrace,
And bending part is provided with fillet.Second edge strip 3 is semi-surrounding structure, including jointing plate 301, the 3rd wing plate 302 and the 4th wing
Plate 303, the 3rd wing plate 302 and the 4th wing plate 303 are connected to the both sides of jointing plate 301, and jointing plate 301 is provided with straight at two
Angle bending, makes the second edge strip 3 also form three-level right angle platform terrace, and bending part is provided with fillet.First edge strip 2 and the second side
The width of the three-level right angle platform terrace of bar 3 is identical, it is ensured that splice plate 201 and jointing plate 301 can be fitted, and makes 2 He of the first edge strip
Second edge strip 3 splice after can thermal resistance sound insulation, also can stitching portion add encapsulant.Fig. 4 surrounds the first edge strip and for complete
Two edge strips splice state schematic cross-section, as shown in figure 4, the semi-surrounding relative to the first above-mentioned edge strip 2 and the second edge strip 3 is tied
Structure, the full hollow structure for surrounding connect to form hollow structure using plate between respective wing plate, with more relative to semi-surrounding structure
Good strength and stability.Meanwhile, the first edge strip 2 and the second edge strip 3 are alternatively solid construction, Fig. 5 be solid first edge strip and
Second edge strip splices state schematic cross-section, as shown in figure 5, the first edge strip 2 and the second edge strip 3 are all solid construction, same logical
Cross step surface and form splicing, the full encirclement structure relative to Fig. 4 has more preferable strength and stability again.
The production method of the wallboard of above-mentioned fire-resistant light granules polyurethane foam material filling need to reserve a shingle nail, and which is led
Want step as follows：First, a shingle nail is reserved, two bracing frames, the first edge strip, the second edge strip and a shingle nail is used self tapping
Nail is connected, and is spliced into the open square box structure of one side, as shown in fig. 6, Fig. 6 is open square box structure schematic diagram, lacks one
The hollow structure of shingle nail defines open square box structure.By synchronous to fire-resistant light granules and polyurethane foam material uniform spray
It is applied in open square box structure, square box structure bonding forming.Fire-resistant light granules and polyurethane foam material are fed by respective
Material machine is conveyed, and is synchronously sprayed.Fig. 7 is fire-resistant light granules and polyurethane foam material spraying filling schematic diagram, such as Fig. 7 institutes
Show, fire-resistant light granules deliver to fire-resistant light granules spray gun 4 by feeding machine, 7 exit of fire-resistant light granules spray gun is provided with A
Component delivery outlet 8 and B component delivery outlet 9, component A and B component are connected to respective delivery outlet by respective transfer pipeline respectively,
Component A and B component mix herein, so as to polyurethane foam material is foamed and is sticked to fire-resistant light granules surface, resistance to
Synchronously spraying is filled in square box structure for fiery light granules and polyurethane foam, and not only its internal bond is integral but also itself and side
Box structure all secure bonds are together.Fixed reserved metope is installed before insulation material is full of rear and insulation material prepattern
Plate so as to which surface is close to, makes the surface of filling that there is the fire-resistant light granules of polyurethane foam material and the shingle nail of rear installation
It is bonded to one, so as to complete the making of wallboard.
In addition, for ensureing the effect for spraying filling, wallboard being put in mould and complete spraying filling, need spraying step
By fixing mould around open square box structure before rapid, mould is close to open square box structure outer surface, as shown in figure 8,
Fig. 8 is that schematic diagram fixed by open square box structure and mould, and open square box structure horizontal positioned, lower template 603 are contacted with shingle nail 4
Face is plane, and area can be fixed not less than produced shingle nail 4, lower template 603, alternatively artificial mobile fixed or automatic
Change equipment realized by programme-control, 601 size and dimension of all templates should with the bracing frame 1 of corresponding body of wall, the first edge strip 2 and
The contact surface of the second edge strip 3 matches, and mould is not provided with upper die plate in the open-mouth for lacking shingle nail, it is ensured that insulation material
Space.And after fixed reserved shingle nail is installed, fixing mould on reserved shingle nail immediately so as to which surface is close to, such as
Shown in Fig. 9, Fig. 9 be assembled complete after mould and wallboard schematic diagram, by shingle nail 4 and corresponding bracing frame 1, the first edge strip and
Second edge strip is connected, and arranges the upper die plate 602 being close to thereon, and upper die plate 602 is fixed with all templates 601；Finally, treat
Mould is removed after insulation material shaping, the production of wallboard is completed.Fire-resistant light granules spray gun 7 according to circumstances can be arranged to removable
The structure of dynamic and rotation, in order to hollow space is filled in place or fixed without fire-resistant light granules spray gun 7 and movement is provided with
The square box structure of mould ensures that filling station is filled in place.
Synchronously spraying is filled in square box for the utility model fire-resistant light granules and polyurethane foam, and polyurethane foam is resistance to
Fiery light granules, both sides shingle nail and wall skeleton bonding is integrally formed, and insulation material is integrally formed without piece, is carried significantly
High integral wall intensity and heat insulating and sound insulating performance；Spray pattern avoids foaming pearl rock beam, foamed ceramic plate, foamed glass
Plate, rock cotton board need to cut and position, splice, mating formation etc. a large amount of operations as packed bed etc., especially in pre-buried electric-controlled switch
And the position such as pipeline, greatly save man-hour and expense.The fire-resistant light granules that A levels are not fired occupy most spaces, carry significantly
Flame-retardant performance is risen, and polyurethane foam has formed waterproof layer, is particularly suited for water-fast Mold proof wall needs, heat-and sound-insulating effect
Good, combination property is high and cost is significantly reduced.Shingle nail can be one or more layers compound sound insulation, guarantor to realize body of wall
Temperature, fire prevention, decoration functions.
Although the embodiment disclosed in the utility model is as above, its content is only to facilitate understand the utility model
Technical scheme and the embodiment that adopts, be not intended to limit the utility model.Any the utility model art
Interior technical staff, on the premise of without departing from the core technology scheme disclosed in the utility model, can be in the form that implements
With make any modification and change in details, but the protection domain limited by the utility model still must be with appending claims
The scope of restriction is defined.
Claims (9)
1. the wallboard of a kind of fire-resistant light granules and polyurethane foam material filling, is fixed on the outside of construction wall and protects for exterior wall
Temperature, or it is assembled into construction wall, it is characterised in that including bracing frame, the first edge strip, the second edge strip, shingle nail and heat-insulation layer；
Support frame as described above is strip section bar, and two support frames as described above are be arranged in parallel top surface and bottom surface as wallboard respectively up and down；
First edge strip and the second edge strip are all strip section bar, and its two ends is separately fixed at two support frame as described above two ends, makees
For two joint faces of wallboard, adjacent wall board passes through the first edge strip and the second edge strip splices and forms broken line sound insulation thermal resistance path；
Described two bracing frames, the first edge strip and the second edge strip are spliced into Wallboard-framework；
The shingle nail is arranged on the Wallboard-framework both sides, and two pieces of shingle nails are spliced into as two sides of wallboard
Hollow structure；
The insulation material is arranged in the hollow structure, is bondd including fire-resistant light granules and by the fire-resistant light granules
The polyurethane foam material of one.
2. wallboard as claimed in claim 1, it is characterised in that first edge strip and the second edge strip are both provided with multi-stage stairs
Face, and the first edge strip and the second edge strip fit to form splicing by multistage cascaded surface.
3. wallboard as claimed in claim 2, it is characterised in that the section of first edge strip and the second edge strip be semi-surrounding,
Full encirclement or solid construction.
4. wallboard as claimed in claim 1, it is characterised in that support frame as described above is the long strip type of c-type or rectangular cross section structure
Material, two support frames as described above are correspondingly arranged up and down.
5. wallboard as claimed in claim 1, it is characterised in that support frame as described above, the first edge strip and the second edge strip be plasterboard,
Calcium silicate board, glass magnesium board, block of glass wool, ceramic plate, PLASTIC LAMINATED, abatvoix, carbon felt plate, fiber reinforced cement board, foamed ceramic plate,
Foamed glass plate, cement board, pearlite slab, medium-density plate, Europe deals, metallic plate, inorganic fiberboard, wood-plastic board or carpenter
Plate.
6. wallboard as claimed in claim 1, it is characterised in that the shingle nail is for compound the stacking of one or more layers sheet material
Into.
7. wallboard as claimed in claim 6, it is characterised in that the sheet material is marble slab, plasterboard, calcium silicate board, glass
Magnesium plate, ceramic wafer, pottery clay plates, glass epoxy, block of glass wool, ceramic plate, PLASTIC LAMINATED, abatvoix, carbon felt plate, fibre reinforced cement
Plate, foamed ceramic plate, foamed glass plate, cement board, pearlite slab, medium-density plate, Europe deals, metallic plate, wood-plastic board or
Woodwork plate.
8. wallboard as claimed in claim 6, it is characterised in that the shingle nail is for compound the stacking of one or more layers sheet material
Into, and its outer layer sheet material is water-proof sheet material.
9. wallboard as claimed in claim 1, it is characterised in that the packed density of the insulation material is 50-500Kg/m3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620486676.0U CN206015932U (en) | 2016-05-25 | 2016-05-25 | A kind of fire-resistant light granules and the wallboard of filling polyurethane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620486676.0U CN206015932U (en) | 2016-05-25 | 2016-05-25 | A kind of fire-resistant light granules and the wallboard of filling polyurethane |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107435385A (en) * | 2016-05-25 | 2017-12-05 | 北新集团建材股份有限公司 | A kind of wallboard and production method of fire-resistant light granules and filling polyurethane |
| CN108166643A (en) * | 2017-12-04 | 2018-06-15 | 山东泰信幕墙工程有限公司 | For the wall plate device and installing and connecting apparatus of building |
| CN110469003A (en) * | 2019-07-30 | 2019-11-19 | 北新集团建材股份有限公司 | A kind of assembled wallboard and its installation method |
-
2016
- 2016-05-25 CN CN201620486676.0U patent/CN206015932U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107435385A (en) * | 2016-05-25 | 2017-12-05 | 北新集团建材股份有限公司 | A kind of wallboard and production method of fire-resistant light granules and filling polyurethane |
| CN108166643A (en) * | 2017-12-04 | 2018-06-15 | 山东泰信幕墙工程有限公司 | For the wall plate device and installing and connecting apparatus of building |
| CN110469003A (en) * | 2019-07-30 | 2019-11-19 | 北新集团建材股份有限公司 | A kind of assembled wallboard and its installation method |
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