CN113931333A - External wall insulation board and production method thereof - Google Patents
External wall insulation board and production method thereof Download PDFInfo
- Publication number
- CN113931333A CN113931333A CN202111289907.0A CN202111289907A CN113931333A CN 113931333 A CN113931333 A CN 113931333A CN 202111289907 A CN202111289907 A CN 202111289907A CN 113931333 A CN113931333 A CN 113931333A
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- board
- magnesite cement
- mould
- rock wool
- heat preservation
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- 238000009413 insulation Methods 0.000 title claims abstract description 35
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 18
- 239000004568 cement Substances 0.000 claims abstract description 55
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 claims abstract description 55
- 229910000021 magnesium carbonate Inorganic materials 0.000 claims abstract description 55
- 235000014380 magnesium carbonate Nutrition 0.000 claims abstract description 55
- 239000001095 magnesium carbonate Substances 0.000 claims abstract description 55
- 239000011490 mineral wool Substances 0.000 claims abstract description 37
- 238000002156 mixing Methods 0.000 claims abstract description 19
- 238000004321 preservation Methods 0.000 claims abstract description 19
- 238000003756 stirring Methods 0.000 claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000000463 material Substances 0.000 claims abstract description 7
- 239000008187 granular material Substances 0.000 claims abstract description 5
- 239000011268 mixed slurry Substances 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 15
- 239000010410 layer Substances 0.000 claims description 12
- 229920000742 Cotton Polymers 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 8
- 239000012792 core layer Substances 0.000 claims description 7
- 239000002245 particle Substances 0.000 claims description 7
- 239000000835 fiber Substances 0.000 claims description 6
- 235000011837 pasties Nutrition 0.000 claims description 6
- 239000011230 binding agent Substances 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 claims description 3
- 239000004519 grease Substances 0.000 claims description 3
- 238000002844 melting Methods 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims description 3
- 230000002940 repellent Effects 0.000 claims description 3
- 239000005871 repellent Substances 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- 238000001723 curing Methods 0.000 claims 1
- 230000002349 favourable effect Effects 0.000 abstract description 3
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000003860 storage Methods 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920006327 polystyrene foam Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- 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
- E04B1/76—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 heat only
- E04B1/78—Heat insulating elements
- E04B1/80—Heat insulating elements slab-shaped
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/14—Producing shaped prefabricated articles from the material by simple casting, the material being neither forcibly fed nor positively compacted
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B19/00—Machines or methods for applying the material to surfaces to form a permanent layer thereon
- B28B19/0053—Machines or methods for applying the material to surfaces to form a permanent layer thereon to tiles, bricks or the like
- B28B19/0061—Means for arranging or fixing the tiles, bricks or the like in the mould
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Acoustics & Sound (AREA)
- Manufacturing & Machinery (AREA)
- Building Environments (AREA)
Abstract
The invention provides an external wall insulation board and a production method thereof, and relates to the technical field of building external wall insulation boards. This external wall insulation board and production method thereof comprises magnesite cement mixing board and heat preservation sandwich layer, heat preservation sandwich layer fixed connection is in the inside of magnesite cement mixing board, magnesite cement mixing board adds EPS granule and continues to stir after adding water and stirring by magnesite cement and forms, the heat preservation sandwich layer is formed by rock wool material pressfitting, the outside of magnesite cement mixing board is provided with the mould, the screw hole has been seted up to the side surface of mould, the inside swing joint of screw hole has the screw rod, the one end of screw rod extends to the inside of mould and contacts with the side surface of heat preservation sandwich layer, the other end of screw rod extends to the outside fixedly connected with hand wheel of mould. Through using EPS granule and rock wool panel cooperation, when guaranteeing good heat preservation performance, also can reduce the whole weight of heated board well, be favorable to easy to assemble.
Description
Technical Field
The invention relates to the technical field of building external wall insulation boards, in particular to an external wall insulation board and a production method thereof.
Background
The outer wall insulation board is also called a floor line building outer wall decoration integrated board. The external wall insulation board is formed by compounding polymer mortar, glass fiber mesh cloth, flame-retardant molded polystyrene foam board (EPS) or extruded sheet (XPS) and other materials, integrates functions, is produced in factories, is constructed by bonding on site, is a preferred material for meeting the energy-saving requirement of the current house buildings and improving the insulation level of the external walls of industrial and civil buildings, and is also a preferred material for energy-saving reconstruction of the existing buildings. It is used in high-rise outer wall, indoor market and industrial equipment, and has low cost, high corrosion resistance and no pollution.
Present external wall insulation board has some not enoughly, and for example the moisture absorption performance is poor for the insulation board, influences the life of insulation board easily, and the structure is not light enough simultaneously for difficult installation, the dead weight is heavier moreover.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides an external wall insulation board and a production method thereof, and solves the problems that the insulation board is poor in moisture absorption resistance, the service life of the insulation board is easily influenced, and meanwhile, the structure is not light enough, so that the insulation board is not easy to install and has heavy self weight.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: the utility model provides an external wall insulation board comprises magnesite cement mixing board and heat preservation sandwich layer, heat preservation sandwich layer fixed connection is in the inside of magnesite cement mixing board, magnesite cement mixing board adds EPS granule and continues to stir after adding water stirring by magnesite cement and forms, the heat preservation sandwich layer is formed by the pressfitting of rock wool material.
Preferably, the magnesite cement mixing plate's the outside is provided with the mould, the screw hole has been seted up to the side surface of mould, the inside swing joint of screw hole has the screw rod, the one end of screw rod extends to the inside of mould and contacts with the side surface of heat preservation sandwich layer, the quantity of screw hole is a plurality of.
Preferably, the other end of screw rod extends to the outside fixedly connected with hand wheel of mould, the outside fixed surface of hand wheel is connected with hexagonal spiral shell head, the outside surface of hand wheel just is close to edge fixedly connected with handle.
Preferably, the lower surface of the die is close to the edges of the periphery and is fixedly connected with a support plate, and the left side surface and the right side surface of the die are close to the top edges and are fixedly connected with handles.
A production method of an external wall insulation board is characterized by comprising the following steps: the method comprises the following process flows:
s1: manufacturing a heat preservation core layer, melting high-quality basalt at a high temperature of over 1450 ℃, centrifuging the high-quality basalt into fibers at a high speed by adopting a four-shaft centrifuge, simultaneously spraying a binder, dustproof oil and a water repellent, collecting the fibers by a cotton collecting machine, paving cotton by a pendulum bob method process and a three-dimensional method, and then curing and cutting the cotton to manufacture a rock wool board;
s2: preparing magnesite cement mixed slurry, namely adding water into finished magnesite cement and stirring the mixture into paste, and then adding finished EPS particles into the pasty magnesite cement and continuously stirring the mixture to ensure that the EPS particles are uniformly distributed in the pasty magnesite cement to prepare the magnesite cement mixed slurry;
s3: positioning a rock wool board, putting the rock wool board into a mold, and manually rotating a hand wheel or driving the hand wheel through a hexagonal screw head by using an electric screwdriver so as to drive a screw rod to rotate to move in a threaded hole, so that one end of the screw rod is in contact with the side surface of the rock wool board to position and clamp the rock wool board;
s4: coating a layer of anti-bonding grease on the surface of the screw, then pouring the magnesite cement mixed slurry into a mould to enable the magnesite cement mixed slurry to completely wrap the rock wool board, and continuously adding the magnesite cement mixed slurry to enable the magnesite cement mixed slurry to be flush with the upper surface of the mould;
s5: the mould is stacked to a cool and dry place for storage, the magnesite cement mixed plate can be directly taken out after the magnesite cement is solidified by taking out the screw.
Preferably, when the rock wool panel is positioned in S3, the rock wool panel cannot contact with the inner side wall of the mold, and the rock wool panel needs to be kept horizontal, so that the rock wool panel is located in the center of the inside of the mold.
(III) advantageous effects
The invention provides an external wall insulation board and a production method thereof. The method has the following beneficial effects:
1. through using EPS granule and rock wool panel cooperation, when guaranteeing good heat preservation performance, also can reduce the whole weight of heated board well, be favorable to easy to assemble.
2. Through using magnesite cement and rock wool panel cooperation, can improve the moisture absorption resistance ability of heated board effectively, be favorable to preventing that the heated board from influencing holistic life because of humidity is too big.
3. The insulation board is produced and processed through the die, so that the mass production is favorably realized, and the production cost is reduced.
Drawings
FIG. 1 is a perspective view of an external structure of an external wall insulation board according to the present invention;
FIG. 2 is a front view of the internal structure of the insulation board for external walls of the present invention.
Wherein, 1, magnesite cement mixing plate; 2. a heat preservation core layer; 3. a mold; 4. a handle; 5. a screw; 6. a hand wheel; 7. a hexagonal screw head; 8. a handle; 9. a threaded hole; 10. and (4) a support plate.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1-2, an embodiment of the invention provides an external wall insulation board and a production method thereof, the external wall insulation board is composed of a magnesite cement mixing board 1 and an insulation core layer 2, the insulation core layer 2 is fixedly connected inside the magnesite cement mixing board 1, the magnesite cement mixing board 1 is formed by adding water into magnesite cement, stirring the mixture, adding EPS particles, and continuously stirring the mixture, and the insulation core layer 2 is formed by pressing rock wool materials.
The outside of magnesite cement mixing plate 1 is provided with mould 3, and threaded hole 9 has been seted up to the side surface of mould 3, and threaded hole 9's inside swing joint has screw rod 5, and the one end of screw rod 5 extends to mould 3's inside and heat preservation sandwich layer 2's side surface and contacts, and threaded hole 9's quantity is a plurality of.
The other end of the screw rod 5 extends to the outer side of the die 3 and is fixedly connected with a hand wheel 6, the outer side surface of the hand wheel 6 is fixedly connected with a hexagonal screw head 7, and the outer side surface of the hand wheel 6 is fixedly connected with a handle 8 close to the edge.
The lower surface of mould 3 just is close to edge fixedly connected with extension board 10 all around, and the side surface just is close to top edge fixedly connected with handle 4 about mould 3.
A production method of an external wall insulation board comprises the following process flows:
s1: manufacturing a heat preservation core layer 2, melting high-quality basalt at a high temperature of over 1450 ℃, centrifuging the high-quality basalt at a high speed by adopting a four-shaft centrifuge to form fibers, simultaneously spraying a binder, dustproof oil and a water repellent, collecting the fibers by a cotton collecting machine, paving cotton by a pendulum bob method process and a three-dimensional method, and then curing and cutting the cotton to prepare a rock wool board;
s2: preparing magnesite cement mixed slurry, namely adding water into finished magnesite cement and stirring the mixture into paste, and then adding finished EPS particles into the pasty magnesite cement and continuously stirring the mixture to ensure that the EPS particles are uniformly distributed in the pasty magnesite cement to prepare the magnesite cement mixed slurry;
s3: positioning a rock wool board, putting the rock wool board into a mold 3, and manually rotating a hand wheel 6 or driving the hand wheel 6 through a hexagonal screw head 7 by using an electric screwdriver so as to drive a screw rod 5 to rotate to enable the screw rod 5 to move in a threaded hole 9, so that one end of the screw rod 5 is in contact with the side surface of the rock wool board to position and clamp the rock wool board;
s4: coating a layer of anti-bonding grease on the surface of the screw 5, then pouring the magnesite cement mixed slurry into the mould 3 to enable the magnesite cement mixed slurry to completely wrap the rock wool board, and continuously adding the magnesite cement mixed slurry to enable the magnesite cement mixed slurry to be flush with the upper surface of the mould 3;
s5: the mould 3 is stacked to a cool and dry place for storage, the magnesite cement mixing plate 1 can be directly taken out after the magnesite cement is solidified by taking out the screw 5.
When the rock wool panel is positioned in the S3, the rock wool panel cannot be in contact with the inner side wall of the mold 3, the rock wool panel needs to be kept in a horizontal state, and the rock wool panel is located in the center of the interior of the mold 3.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. An external wall insulation board, its characterized in that: constitute by magnesite cement mixing board (1) and heat preservation sandwich layer (2), heat preservation sandwich layer (2) fixed connection is in the inside of magnesite cement mixing board (1), magnesite cement mixing board (1) is added EPS granule and continues to stir after adding water the stirring by magnesite cement and forms, heat preservation sandwich layer (2) are formed by the pressfitting of rock wool material.
2. The exterior wall insulation board of claim 1, wherein: the outside of magnesite cement mixing plate (1) is provided with mould (3), threaded hole (9) have been seted up to the side surface of mould (3), the inside swing joint of threaded hole (9) has screw rod (5), the one end of screw rod (5) extends to the inside of mould (3) and contacts with the side surface of heat preservation sandwich layer (2), the quantity of threaded hole (9) is a plurality ofly.
3. The exterior wall insulation board of claim 2, wherein: the other end of screw rod (5) extends to outside fixedly connected with hand wheel (6) of mould (3), the outside fixed surface of hand wheel (6) is connected with hexagonal spiral shell head (7), the outside surface of hand wheel (6) just is close to edge fixedly connected with handle (8).
4. The exterior wall insulation board of claim 2, wherein: the lower surface of mould (3) just is close to edge fixedly connected with extension board (10) all around, the side surface just is close to top edge fixedly connected with handle (4) about mould (3).
5. A production method of an external wall insulation board is characterized by comprising the following steps: the method comprises the following process flows:
s1: manufacturing a heat preservation core layer (2), melting high-quality basalt at a high temperature of over 1450 ℃, centrifuging the high-quality basalt at a high speed by adopting a four-shaft centrifuge to form fibers, simultaneously spraying a binder, dustproof oil and a water repellent, collecting the fibers by a cotton collecting machine, paving cotton by a pendulum bob method process and a three-dimensional method, curing and cutting the cotton to prepare a rock wool board;
s2: preparing magnesite cement mixed slurry, namely adding water into finished magnesite cement and stirring the mixture into paste, and then adding finished EPS particles into the pasty magnesite cement and continuously stirring the mixture to ensure that the EPS particles are uniformly distributed in the pasty magnesite cement to prepare the magnesite cement mixed slurry;
s3: the rock wool board is positioned, the rock wool board is placed in the die (3), the hand wheel (6) is driven through a hand wheel (6) by manually rotating the hand wheel or through a hexagonal screw head (7) by using an electric screwdriver, and then the screw rod (5) is driven to rotate so that the screw rod (5) moves in the threaded hole (9), and one end of the screw rod (5) is in contact with the side surface of the rock wool board to position and clamp the rock wool board;
s4: coating a layer of anti-bonding grease on the surface of the screw (5), then pouring the magnesite cement mixed slurry into the mould (3) to enable the magnesite cement mixed slurry to completely wrap the rock wool board, and continuously adding the magnesite cement mixed slurry to enable the magnesite cement mixed slurry to be flush with the upper surface of the mould (3);
s5: the mould (3) is stacked to a cool and dry place to be stored for waiting for magnesite cement to solidify, and the magnesite cement mixing plate (1) can be directly taken out after the screw (5) is taken out.
6. The production method of the external wall insulation board according to claim 5, characterized in that: when the rock wool board is positioned in the S3, the rock wool board cannot be in contact with the inner side wall of the mold (3), the rock wool board needs to be kept in a horizontal state, and the rock wool board is located in the center of the interior of the mold (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111289907.0A CN113931333A (en) | 2021-11-02 | 2021-11-02 | External wall insulation board and production method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111289907.0A CN113931333A (en) | 2021-11-02 | 2021-11-02 | External wall insulation board and production method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113931333A true CN113931333A (en) | 2022-01-14 |
Family
ID=79285517
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111289907.0A Pending CN113931333A (en) | 2021-11-02 | 2021-11-02 | External wall insulation board and production method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113931333A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2247689Y (en) * | 1995-12-16 | 1997-02-19 | 仇国辉 | Magnesite concrete wall slab |
| CN102775122A (en) * | 2012-04-13 | 2012-11-14 | 杨永 | Magnesite thermal insulation board for outer wall |
| CN105507436A (en) * | 2016-01-20 | 2016-04-20 | 济南捷源新材料有限公司 | Vertical steel wire glass cotton or rock cotton heat-preserving board, pasting process and irrigation process |
| CN109732755A (en) * | 2019-03-05 | 2019-05-10 | 泗县汉能诚信电气工程有限公司 | A kind of casting platform of prefabricated panel |
| CN110469042A (en) * | 2019-07-31 | 2019-11-19 | 东南大学 | A kind of prefabricated wallboard, its manufacturing method and its mold |
| CN211917188U (en) * | 2020-04-07 | 2020-11-13 | 江西省魏氏常春水泥制品有限公司 | Cast-in-situ mould for cement floor tiles |
| CN112854742A (en) * | 2021-03-15 | 2021-05-28 | 山西三建集团有限公司 | Concrete pouring template system with built-in insulation board outer wall |
| US20210238870A1 (en) * | 2018-05-24 | 2021-08-05 | Ratec Maschinenentwicklungs- Und Verwaltungs-Gmbh | Formwork core for a formwork system for casting a bell-shaped body |
| CN214395827U (en) * | 2021-03-26 | 2021-10-15 | 济南金圣冷藏设备有限公司 | Adjustable refrigeration railway carriage or compartment heated board production is with equipment positioner |
-
2021
- 2021-11-02 CN CN202111289907.0A patent/CN113931333A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2247689Y (en) * | 1995-12-16 | 1997-02-19 | 仇国辉 | Magnesite concrete wall slab |
| CN102775122A (en) * | 2012-04-13 | 2012-11-14 | 杨永 | Magnesite thermal insulation board for outer wall |
| CN105507436A (en) * | 2016-01-20 | 2016-04-20 | 济南捷源新材料有限公司 | Vertical steel wire glass cotton or rock cotton heat-preserving board, pasting process and irrigation process |
| US20210238870A1 (en) * | 2018-05-24 | 2021-08-05 | Ratec Maschinenentwicklungs- Und Verwaltungs-Gmbh | Formwork core for a formwork system for casting a bell-shaped body |
| CN109732755A (en) * | 2019-03-05 | 2019-05-10 | 泗县汉能诚信电气工程有限公司 | A kind of casting platform of prefabricated panel |
| CN110469042A (en) * | 2019-07-31 | 2019-11-19 | 东南大学 | A kind of prefabricated wallboard, its manufacturing method and its mold |
| CN211917188U (en) * | 2020-04-07 | 2020-11-13 | 江西省魏氏常春水泥制品有限公司 | Cast-in-situ mould for cement floor tiles |
| CN112854742A (en) * | 2021-03-15 | 2021-05-28 | 山西三建集团有限公司 | Concrete pouring template system with built-in insulation board outer wall |
| CN214395827U (en) * | 2021-03-26 | 2021-10-15 | 济南金圣冷藏设备有限公司 | Adjustable refrigeration railway carriage or compartment heated board production is with equipment positioner |
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Application publication date: 20220114 |