CN114507056A - Calcium sulfate floor component and preparation process thereof - Google Patents
Calcium sulfate floor component and preparation process thereof Download PDFInfo
- Publication number
- CN114507056A CN114507056A CN202210210521.4A CN202210210521A CN114507056A CN 114507056 A CN114507056 A CN 114507056A CN 202210210521 A CN202210210521 A CN 202210210521A CN 114507056 A CN114507056 A CN 114507056A
- Authority
- CN
- China
- Prior art keywords
- calcium sulfate
- floor
- hollow pipe
- connecting piece
- reinforcing structure
- 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.)
- Granted
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/14—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Floor Finish (AREA)
Abstract
Relates to the technical field of calcium sulfate floors, and discloses a preparation process of a calcium sulfate floor, which comprises the following steps: step one, mixing raw materials according to a formula proportion, and then feeding the mixed materials into a mould to lay so as to prepare a rough board; when the wool boards are laid, a reinforcing structure consisting of a plurality of hollow pipe bodies is embedded in the middle of each wool board, and the reinforcing structure is net-shaped; and step two, carrying out hot pressing on the finished rough board to obtain a semi-finished product. In the invention, in order to ensure the structural strength of the floor under the premise of reducing the weight of the calcium sulfate floor, a plurality of hollow pipe bodies form a net shape so as to form a reinforcing structure, and the hollow pipe bodies are preferably light high-strength pipes, such as aluminum alloy pipes and aluminum honeycomb pipes. The hollow pipe body replaces a calcium sulfate base material at a corresponding position, so that the overall weight of the calcium sulfate floor with the standard size is greatly reduced, and the transportation and installation difficulty is reduced.
Description
Technical Field
The invention relates to the technical field of calcium sulfate floors, in particular to a calcium sulfate floor component and a preparation process thereof.
Background
Currently known calcium sulfate bottom plates are generally of a three-layer structure, wherein a calcium sulfate base material is arranged in the middle, and veneers are arranged at the upper part and the lower part. The main materials of the calcium sulfate base material are natural gypsum and plant fiber, the raw materials are combined and solidified into calcium sulfate crystals through stirring, the high-strength base material is formed through long-time maintenance after pulse pressing, and different purposes can be met through processing.
The calcium sulfate floor is the heaviest of all the elevated floors and has the density of more than 1500kg/m3Equivalent to more than 18 kilograms of 600 square centimeters, one container with 20 feet can load the calcium sulfate floor with the maximum square of 450, therefore, the larger self weight not only brings difficulty to the transportation of the plate, but also has extremely high requirements on the floor components, and the whole structure is easy to be unstable. Therefore, there is a need for improvements to existing calcium sulfate flooring.
Disclosure of Invention
The invention aims to provide a calcium sulfate floor component and a preparation process thereof, and aims to solve the technical problem that the existing calcium sulfate floor is unfavorable for transportation, installation and use due to overlarge density.
In order to achieve the purpose, the invention provides the following technical scheme:
according to one aspect of the invention, a preparation process of a calcium sulfate floor is provided, which comprises the following steps:
step one, mixing raw materials according to a formula proportion, and then feeding the mixed materials into a mould to lay so as to prepare a rough board;
when the wool boards are laid, a reinforcing structure consisting of a plurality of hollow pipe bodies is embedded in the middle of each wool board, and the reinforcing structure is net-shaped;
step two, carrying out hot pressing on the finished rough board to obtain a semi-finished product;
wherein, the pre-compaction adopts the hot press, and satisfies following operating condition at least: the hot pressing temperature is 90-135 ℃, and the working pressure is 15-22 MPa;
thirdly, performing pulse pressing on the semi-finished product, and maintaining for a certain time to obtain a calcium sulfate base material;
and step four, reprocessing the calcium sulfate substrate to obtain a calcium sulfate floor finished product.
In the first step, before the reinforcing structure is embedded, the rough plate is pre-pressed for the first time, a pre-press is adopted for the first pre-pressing, and the following working conditions are at least met: pre-pressing pressure is 1-1.5 MPa;
after the reinforcing structure is embedded, the rough board is pre-pressed for the second time, a pre-press is adopted for the second pre-pressing, and the following working conditions are at least met: the pre-pressing pressure is 2.5-4 MPa.
In the first step, before the reinforcing structure is pre-embedded, connecting pieces are pre-embedded on the rough board, and then, first pre-pressing is carried out;
the connecting piece is positioned at the corner of the calcium sulfate floor with standard size and corresponds to the position of the floor component.
Wherein, in step one, the raw materials at least comprise:
calcium sulfate, plant fiber, diatomite, polypropylene fiber and mineral fiber.
In the first step, the length and width dimensions of the reinforcing structure are both larger than those of the wool board;
the inner wall of the hollow pipe body is of a concave-convex structure;
the outer diameter of the hollow pipe body is 1/4-1/3 of the thickness of the wool board.
According to another aspect of the present invention, there is provided a calcium sulfate flooring assembly comprising:
the clamping piece is used for connecting adjacent calcium sulfate floors;
the top surface of the connecting piece is used for supporting and fixing the clamping piece, and the bottom surface of the connecting piece is connected with the supporting piece;
a support member for supporting the connection member;
wherein, the fastener and the hollow pipe body are clamped.
The end part of the clamping piece is provided with two inclined planes, and the included angle between the inclined planes is 90 degrees;
the clamping piece is clamped with the connecting piece.
The locking columns are arranged on two sides of the clamping piece and correspond to the end of the hollow pipe body, and can extend into the hollow pipe body to be meshed with the concave-convex structure on the inner wall of the hollow pipe body.
The connecting piece is fixedly connected with the connecting piece on the calcium sulfate floor through a bolt structure;
the side length of the connecting piece is 1/4 of the side length of the calcium sulfate floor.
The supporting piece is of a height-adjustable structure, a supporting pad is arranged at the bottom end of the supporting piece, and the supporting pad is fixed with the ground.
Compared with the prior art, the invention has the beneficial effects that:
in the invention, in order to ensure the structural strength of the floor under the premise of reducing the weight of the calcium sulfate floor, a plurality of hollow pipe bodies form a net shape so as to form a reinforcing structure, and the hollow pipe bodies are preferably light high-strength pipes, such as aluminum alloy pipes and aluminum honeycomb pipes. The hollow pipe body replaces a calcium sulfate base material at a corresponding position, so that the whole weight of the calcium sulfate floor with a standard size is greatly reduced, and the transportation and installation difficulty is reduced.
Be equipped with a fastener between the adjacent calcium sulfate floor, and the fastener stretches into the concave-convex structure meshing on the internal locking post of hollow tube and the hollow tube body inner wall through both sides to realize the joint on fastener and calcium sulfate floor, relative and traditional concatenation mode, this scheme is simple quick more, and no longer relies on the connection of connecting piece completely between the adjacent calcium sulfate floor.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
FIG. 1 is a flow chart of a manufacturing process in one embodiment;
FIG. 2 is a schematic diagram of the internal structure of a calcium sulfate floor according to an embodiment;
FIG. 3 is a bottom view of an upper portion of a gantry crane according to one embodiment;
fig. 4 is a top view of a top surface of a gantry crane in one embodiment.
In the figure: 1. a fastener; 2. a connecting member; 3. a support member; 4. a locking post; 5. a support pad.
Detailed Description
In order to make the implementation purpose, technical scheme and advantages of the present invention clearer, the technical scheme of the present invention will be clearly and completely described below with reference to the embodiment of the present application and the attached drawings. The embodiments recited in the present application are only a part of the embodiments of the present application, and should not be considered as all embodiments. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without making any inventive step, are intended to be within the scope of the present invention, and therefore the following detailed description of the specific embodiments, which is provided in the accompanying drawings, is not intended to limit the scope of the invention as claimed, but only to represent the preferred embodiments of the invention.
Referring to fig. 1-2, fig. 1 is a flow chart of a preparation process in an embodiment, and fig. 2 is a schematic view of an internal structure of a calcium sulfate floor in an embodiment.
According to one aspect of the invention, a preparation process of a calcium sulfate floor is provided, which comprises the following steps:
step S101, mixing raw materials according to a formula proportion, and then sending the mixed materials into a mould to be laid to prepare a rough board;
when the wool boards are laid, a reinforcing structure formed by a plurality of hollow pipe bodies a is pre-buried in the middle of each wool board, and the reinforcing structure is net-shaped;
step S102, carrying out hot pressing on the finished rough board to obtain a semi-finished product;
wherein, the pre-compaction adopts the hot press, and satisfies following operating condition at least: preferably, the hot pressing temperature is 115 ℃, and the working pressure is 18.5 MPa;
step S103, performing pulse pressing on the semi-finished product, and maintaining for a certain time to obtain a calcium sulfate base material;
and step S104, reprocessing the calcium sulfate substrate to obtain a finished product of the calcium sulfate floor b.
In order to ensure the structural strength of the floor on the premise of reducing the weight of the calcium sulfate floor, a plurality of hollow pipe bodies form a net shape so as to form a reinforcing structure, and the hollow pipe bodies are preferably light high-strength pipes such as aluminum alloy pipes and aluminum honeycomb pipes.
The hollow pipe body replaces a calcium sulfate base material at a corresponding position, so that the overall weight of the calcium sulfate floor with the standard size is greatly reduced, and the transportation and installation difficulty is reduced.
In the first step, before the reinforcing structure is embedded, the rough plate is pre-pressed for the first time, a pre-press is adopted for the first pre-pressing, and the following working conditions are at least met: preferably, the prepressing pressure is 1.25MPa, so that the blank plate is compacted, hollowing is avoided, the blank plate after the first prepressing is smoother, the difficulty of laying a reinforcing structure is greatly reduced, and the laying precision is improved;
after the reinforcing structure is embedded, the rough board is pre-pressed for the second time, a pre-press is adopted for the second pre-pressing, and the following working conditions are at least met: preferably, the pre-pressing pressure is 3.25 MPa. The whole body is pre-pressed, so that the rough board is not too loose, and the rough board is stable in structure in the transfer process.
In the first step, before the reinforcing structure is pre-embedded, connecting pieces are pre-embedded on the rough board, and then, first pre-pressing is carried out;
the connecting piece is positioned at the corner of the calcium sulfate floor with the standard size and corresponds to the floor component in position; the connecting piece is located the edge on calcium sulfate floor, and the installation and the fixing in the later stage of being convenient for, and adopts pre-buried mode to arrange the connecting piece, for traditional drilling connected mode, the connecting piece is connected with the calcium sulfate floor more firmly, also is difficult for loosely after the installation.
Wherein, in step one, the raw materials at least comprise:
calcium sulfate, plant fiber, diatomite, polypropylene fiber and mineral fiber.
In the first step, the length and width dimensions of the reinforcing structure are both larger than those of the wool board; make in the pressing process, the inside can not blockked up by the raw materials of cavity body, when also being convenient for later stage is maintained hollow body end and calcium sulfate floor border and is leveled.
The inner wall of the hollow pipe body is of a concave-convex structure;
the outer diameter of the hollow pipe body is 1/4-1/3 of the thickness of the wool board. The outer diameter of the hollow pipe body is made as large as possible to replace more calcium sulfate base materials, so that the weight is reduced.
It should be noted that, in the present application, steps 103, 104 and the raw material formula are all known at present, and although specific contents are not explicitly described herein, those skilled in the art can fully implement the present technology, and steps 103, 104 and the raw material formula are not design points claimed in the present application, and therefore, are not described in detail in the present application.
According to another aspect of the present invention, there is provided a calcium sulfate flooring assembly comprising:
the clamping piece 1 is used for connecting adjacent calcium sulfate floors;
the top surface of the connecting piece 2 is used for supporting and fixing the clamping piece 1, and the bottom surface of the connecting piece 2 is connected with the supporting piece 3;
a support member 3 for supporting the connection member 2;
wherein, fastener 1 and hollow body joint.
Referring to fig. 3-4, fig. 3 is a top view of an assembly structure of the card 1 in an embodiment, and fig. 4 is a schematic view of an assembly structure of the assembly in an embodiment.
As preferred, can know in the drawing from the top, be equipped with a fastener 1 between the adjacent calcium sulfate floor, and fastener 1 stretches into the concave-convex structure meshing on locking post 4 in the hollow tube body and the cavity body inner wall through both sides to realize the joint on fastener 1 and calcium sulfate floor, relative and traditional concatenation mode, this scheme is simple quick more, and no longer relies on the connection of connecting piece 2 completely between the adjacent calcium sulfate floor.
In order to enable the end parts of the clamping pieces 1 to be spliced seamlessly, the end parts are arranged to be inclined planes with included angles of 90 degrees, and the end parts of the 4 clamping pieces 1 can be spliced seamlessly.
The connecting piece 2 is fixedly connected with the connecting piece on the calcium sulfate floor through a bolt structure, the matching clamping piece 1 and the calcium sulfate floor form integral interlocking, and the connection between the components is more stable.
The side length of the connecting piece 2 is 1/4 of the side length of the calcium sulfate floor, so that the connecting piece 2 and the calcium sulfate floor have more contact surfaces, and the support performance is improved.
Support piece 3 adopts traditional structure to can realize the adjustment of height, and the pad 5 that props of bottom is fixed with ground, makes support piece 3 can not take place the displacement, can improve the stable support.
It should be noted that, although the matching relationship between the clamping piece 1, the connecting piece 2 and the calcium sulfate floor is not explicitly described herein, the matching relationship between the clamping piece 1, the connecting piece 2 and the calcium sulfate floor can be completely realized by those skilled in the art through the prior art, and the matching relationship between the clamping piece 1, the connecting piece 2 and the calcium sulfate floor is not a design point to be protected by the present application, and therefore, details are not described in the present application.
The foregoing are merely exemplary embodiments of the present invention, which enable those skilled in the art to understand or practice the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the general inventive concept. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The preparation process of the calcium sulfate floor is characterized by comprising the following steps of:
step one, mixing raw materials according to a formula proportion, and then feeding the mixed materials into a mould to lay so as to prepare a rough board;
when the wool boards are laid, a reinforcing structure consisting of a plurality of hollow pipe bodies is embedded in the middle of each wool board, and the reinforcing structure is net-shaped;
step two, carrying out hot pressing on the finished rough board to obtain a semi-finished product;
wherein, the pre-compaction adopts the hot press, and satisfies following operating condition at least: the hot pressing temperature is 90-135 ℃, and the working pressure is 15-22 MPa;
thirdly, performing pulse pressing on the semi-finished product, and maintaining for a certain time to obtain a calcium sulfate base material;
and step four, reprocessing the calcium sulfate substrate to obtain a calcium sulfate floor finished product.
2. The process for preparing a calcium sulfate floor as claimed in claim 1, wherein:
in the first step, the wool board is pre-pressed for the first time before the reinforcing structure is pre-buried, a pre-pressing machine is adopted for the first pre-pressing, and the following working conditions are at least met: pre-pressing at 1-1.5 MPa;
after the reinforcing structure is embedded, the rough board is pre-pressed for the second time, a pre-press is adopted for the second pre-pressing, and the following working conditions are at least met: the pre-pressing pressure is 2.5-4 MPa.
3. The process for preparing a calcium sulfate floor as claimed in claim 2, wherein:
in the first step, before the reinforcing structure is pre-embedded, a connecting piece is pre-embedded on the rough board, and then, first pre-pressing is carried out;
the connecting piece is positioned at the corner of the calcium sulfate floor with standard size and corresponds to the position of the floor component.
4. The process for preparing a calcium sulfate floor according to claim 1, wherein the process comprises the following steps:
in step one, the raw materials at least comprise:
calcium sulfate, plant fiber, diatomite, polypropylene fiber and mineral fiber.
5. The process for preparing a calcium sulfate floor as claimed in claim 1, wherein:
in the first step, the length and width dimensions of the reinforcing structure are both larger than those of the wool board;
the inner wall of the hollow pipe body is of a concave-convex structure;
the outer diameter of the hollow pipe body is 1/4-1/3 of the thickness of the wool board.
6. A calcium sulfate flooring component for installation of a calcium sulfate flooring made by the manufacturing process of any one of claims 1-5, comprising:
the clamping pieces (1) are used for connecting adjacent calcium sulfate floors;
the top surface of the connecting piece (2) is used for supporting and fixing the clamping piece (1), and the bottom surface of the connecting piece (2) is connected with the supporting piece (3);
a support (3) for supporting the connecting piece (2);
wherein, the clamping piece (1) is clamped with the hollow pipe body.
7. A calcium sulfate flooring assembly as set forth in claim 6 wherein:
the end part of the clamping piece (1) is provided with two inclined planes, and the included angle between the inclined planes is 90 degrees;
the clamping piece (1) is clamped with the connecting piece (2).
8. A calcium sulfate flooring assembly as set forth in claim 7 wherein:
and locking columns (4) are arranged on two sides of the clamping piece (1), the locking columns (4) correspond to the end parts of the hollow pipe body and can extend into the hollow pipe body to be meshed with the concave-convex structure on the inner wall of the hollow pipe body.
9. A calcium sulfate flooring assembly as defined in claim 6 wherein:
the connecting piece (2) is fixedly connected with a connecting piece on the calcium sulfate floor through a bolt structure;
the side length of the connecting piece (2) is 1/4 of the side length of the calcium sulfate floor.
10. A calcium sulfate flooring assembly as defined in claim 6 wherein:
the supporting piece (3) is of a height-adjustable structure, a supporting pad (5) is arranged at the bottom end of the supporting piece (3), and the supporting pad (5) is fixed with the ground.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210210521.4A CN114507056B (en) | 2022-03-03 | 2022-03-03 | Calcium sulfate floor component and preparation process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210210521.4A CN114507056B (en) | 2022-03-03 | 2022-03-03 | Calcium sulfate floor component and preparation process thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114507056A true CN114507056A (en) | 2022-05-17 |
| CN114507056B CN114507056B (en) | 2023-02-28 |
Family
ID=81554511
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210210521.4A Active CN114507056B (en) | 2022-03-03 | 2022-03-03 | Calcium sulfate floor component and preparation process thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114507056B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2837752A1 (en) * | 2013-08-13 | 2015-02-18 | Technische Hochshule Mittelhessen | Floor system and method for manufacturing a textile layer for the floor system |
| CN104631694A (en) * | 2015-01-26 | 2015-05-20 | 上海达壁美新材料有限公司 | Manufacturing method of lightweight partition wall |
| CN105753450A (en) * | 2016-03-31 | 2016-07-13 | 孙晋玉 | Calcium sulfate antistatic floor base material |
-
2022
- 2022-03-03 CN CN202210210521.4A patent/CN114507056B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2837752A1 (en) * | 2013-08-13 | 2015-02-18 | Technische Hochshule Mittelhessen | Floor system and method for manufacturing a textile layer for the floor system |
| CN104631694A (en) * | 2015-01-26 | 2015-05-20 | 上海达壁美新材料有限公司 | Manufacturing method of lightweight partition wall |
| CN105753450A (en) * | 2016-03-31 | 2016-07-13 | 孙晋玉 | Calcium sulfate antistatic floor base material |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114507056B (en) | 2023-02-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104912230B (en) | A kind of modular assembly formula combined wall and its connected mode | |
| CN207724540U (en) | A kind of Prefabricated stacking floor production mould | |
| CN101130261B (en) | Process for producing composite and light wall plate of wire fabric reinforcement and concrete with light structure steel frame | |
| CN114507056B (en) | Calcium sulfate floor component and preparation process thereof | |
| CN207048063U (en) | A kind of single-point type steel construction up and down and PC exterior wall connecting nodes | |
| CN111231067A (en) | Cement product mould platform and method for producing cement product by using mould platform | |
| CN105904583A (en) | Production mold platform for prefabricated part and manufacturing method for production mold platform | |
| CN110080443A (en) | A kind of stone material masonry construction and its technique | |
| CN210658929U (en) | Prefabricated light partition wall | |
| CN209868946U (en) | Multilayer platform mould for preparing concrete precast slab | |
| CN207892083U (en) | Fabricated shear wall board bottom has height difference junction support system | |
| CN100585106C (en) | Foam concrete wall for buildings construction | |
| CN113001745B (en) | Method for producing assembled wallboard through flat die superposition | |
| CN215888783U (en) | Exempt from to tear open mould building carrier plate | |
| CN201043314Y (en) | Hollow polyhedron filling block | |
| CN205558021U (en) | Folded plate truss concrete member | |
| CN211007290U (en) | Prefabricated lattice type autoclaved aerated concrete block bearing wallboard | |
| CN211899174U (en) | Truss rib laminated slab with height limiting device and mold table assembly | |
| CN213674645U (en) | Cement product mould platform | |
| CN217345948U (en) | Assembly type structure wall and forming die thereof | |
| CN215971666U (en) | Transportation device for heat-preservation external formwork | |
| CN215631409U (en) | Steel form laminating device | |
| CN201208782Y (en) | Formwork for producing composite wall faceplate | |
| CN206888426U (en) | Large autoclaved lightweight aerated concrete slab component | |
| CN207794663U (en) | One kind wearing flooring ruggedized construction |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A calcium sulfate flooring component and its preparation process Effective date of registration: 20230918 Granted publication date: 20230228 Pledgee: Industrial and Commercial Bank of China Limited Changzhou Economic Development Zone sub branch Pledgor: CHANGZHOU WUJIN ZHONGTIAN COMPUTER-ROOM EQUIPMENT Co.,Ltd. Registration number: Y2023980056794 |