Lightweight high-strength gypsum plaster board
By introducing a waterproof structure and reinforcing layer into the paper-faced gypsum board, the softening and deformation problems caused by moisture penetration in high humidity environments are solved, achieving long service life and high strength performance in humid environments.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUIZHOU TAI FU GYPSUM CO LTD
- Filing Date
- 2025-04-27
- Publication Date
- 2026-05-01
AI Technical Summary
In high-humidity environments, paper-faced gypsum board is susceptible to moisture penetration, which can lead to softening and deformation, thus shortening its service life.
A waterproof structure is introduced into the paper-faced gypsum board, including an antibacterial and mildew-proof layer and a water-resistant layer, combined with fiberglass mesh and a reinforcing layer to form double waterproof protection, enhancing impact resistance and flexural strength.
It effectively prevents moisture penetration and accumulation, extends the service life of gypsum board, improves impact and flexural strength, and reduces the risk of deformation and breakage.
Smart Images
Figure CN224183914U_ABST
Abstract
Description
A lightweight, high-strength paper-faced gypsum board Technical Field
[0001] This utility model relates to the field of paper-faced gypsum board technology, and in particular to a lightweight, high-strength paper-faced gypsum board. Background Technology
[0002] Lightweight, high-strength paper-faced gypsum board is a type of board made primarily from building gypsum, with appropriate additives and fibers as the core, and a specially made paper face. It is lightweight, high-strength, fire-resistant, sound-insulating, heat-insulating, and humidity-regulating, and is widely used in interior walls and ceilings of buildings. It has the following structure:
[0003] 1. Core: Mainly composed of building gypsum, appropriate additives and fibers. Building gypsum is the main cementing material of the core. It will undergo a hydration reaction and harden after contact with water, forming a structure with certain strength and stability. The role of additives is to regulate the setting time of gypsum and improve the performance of the core. Fibers play a role in enhancing the strength and toughness of the core, so that the gypsum board has high flexural and compressive strength while being lightweight.
[0004] 2. Face paper and back paper: Face paper and back paper are usually made of special paperboard with high strength and toughness. They are pasted on both sides of the core board, and their main function is to protect the core board.
[0005] The core of paper-faced gypsum board is mainly composed of building gypsum. Gypsum itself has strong water absorption. When in high-humidity environments such as bathrooms, kitchens, and basements, moisture can easily penetrate into the core, causing the gypsum board to soften and deform, thus shortening its service life. Summary of the Invention
[0006] To address the shortcomings of existing technologies, this utility model provides a lightweight, high-strength paper-faced gypsum board that solves the technical problem that when in high-humidity environments such as bathrooms, kitchens, and basements, moisture easily penetrates into the core of the board, causing the gypsum board to soften, deform, and shorten its service life.
[0007] To achieve the above objectives, this utility model provides the following technical solution:
[0008] A lightweight, high-strength paper-faced gypsum board includes a core, a face paper, and a back paper. The side of the core corresponding to the back paper has a waterproof structure, which includes an antibacterial and mildew-proof layer and a water-resistant layer. The antibacterial and mildew-proof layer is located on the upper surface of the core, and the water-resistant layer is laid on the upper surface of the antibacterial and mildew-proof layer. The back paper is laid on the upper surface of the water-resistant layer, and an anti-wear layer is laid on the upper surface of the back paper. The side of the core corresponding to the face paper has a waterproof layer, and the face paper is located on the lower surface of the waterproof layer. An anti-wear layer is laid on the lower surface of the face paper.
[0009] Preferably, an isolation layer 1 is laid on the side of the core corresponding to the backing paper, an insulation layer is laid on the upper surface of the isolation layer 1, a fiberglass mesh is laid on the upper surface of the insulation layer, and an antibacterial and mildew-proof layer is laid on the upper surface of the fiberglass mesh.
[0010] Preferably, an isolation layer 2 is laid on one side of the core corresponding to the face paper.
[0011] Preferably, the lower surface of the second isolation layer is covered with a reinforcing layer, the lower surface of the reinforcing layer is covered with a sound-absorbing layer, the waterproof layer is laid on the lower surface of the sound-absorbing layer, the lower surface of the waterproof layer is covered with a moisture-proof and breathable layer, and the face paper is laid on the lower surface of the waterproof layer.
[0012] Compared with the prior art, the present invention has the following beneficial effects:
[0013] 1. The waterproof structure between the core and the backing paper consists of an antibacterial and mildew-proof layer and a water-proof layer. The antibacterial and mildew-proof layer can inhibit microbial erosion, and the water-proof layer prevents moisture from penetrating the core. A waterproof layer is set between the core and the backing paper, which, together with the moisture-proof and breathable layer, forms a two-way protection. It can prevent external moisture from penetrating and allow internal moisture to escape. The double waterproof mechanism makes the gypsum board less prone to deformation or mold in humid environments, thereby extending its service life.
[0014] Second, the core board provides initial strength as a foundation, while the fiberglass mesh and reinforcing layer reinforce the top and bottom surfaces of the board, improving its impact resistance, flexural strength, and load-bearing capacity. This enhances the gypsum board's ability to withstand its own weight and external loads when used as building components such as ceilings and partitions, reducing the risk of deformation or breakage. Attached Figure Description
[0015] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings.
[0016] Figure 1 is a three-dimensional structural diagram of this utility model;
[0017] Figure 2 is a structural diagram of the core plate in Figure 1 of this utility model;
[0018] Figure 3 is an enlarged structural view of point A in Figure 2 of this utility model;
[0019] Figure 4 is an enlarged structural view of point B in Figure 2 of this utility model.
[0020] Legend: 1. Core; 2. Face paper; 3. Back paper; 4. Antibacterial and mildew-proof layer; 5. Waterproof layer; 6. Abrasion-resistant layer one; 7. Waterproof layer; 8. Abrasion-resistant layer two; 9. Isolation layer one; 10. Thermal insulation layer; 11. Fiberglass mesh; 12. Isolation layer two; 13. Reinforcing layer; 14. Sound-absorbing layer; 15. Moisture-proof and breathable layer. Detailed Implementation
[0021] This application provides a lightweight, high-strength paper-faced gypsum board that effectively solves the technical problem that when in high-humidity environments such as bathrooms, kitchens, and basements, moisture easily penetrates into the core of the board, causing the gypsum board to soften, deform, and shorten its service life.
[0022] Example
[0023] As shown in Figures 1, 2, 3, and 4, the technical solution in this embodiment effectively solves the problem that when in high-humidity environments such as bathrooms, kitchens, and basements, moisture easily penetrates into the core of the gypsum board, causing it to soften, deform, and shorten its service life. The overall approach is as follows:
[0024] To address the problems existing in the prior art, this utility model provides a lightweight, high-strength paper-faced gypsum board, comprising a core 1, a face paper 2, and a back paper 3. The side of the core 1 corresponding to the back paper 3 is provided with a waterproof structure, which includes an antibacterial and mildew-proof layer 4 and a water-proof layer 5. The antibacterial and mildew-proof layer 4 is disposed on the upper surface of the core 1, the water-proof layer 5 is laid on the upper surface of the antibacterial and mildew-proof layer 4, the back paper 3 is laid on the upper surface of the water-proof layer 5, and an anti-wear layer 6 is laid on the upper surface of the back paper 3. The side of the core 1 corresponding to the face paper 2 is provided with a waterproof layer 7, the face paper 2 is disposed on the lower surface of the waterproof layer 7, and an anti-wear layer 8 is laid on the lower surface of the face paper 2.
[0025] The core board 1 has an isolation layer 9 on the side corresponding to the backing paper 3. An insulation layer 10 is laid on the upper surface of the isolation layer 9. A fiberglass mesh 11 is laid on the upper surface of the insulation layer 10. An antibacterial and mildew-proof layer 4 is laid on the upper surface of the fiberglass mesh 11.
[0026] The core board 1 has an isolation layer 12 laid on one side corresponding to the face paper 2. The lower surface of the isolation layer 12 has a reinforcing layer 13 laid on the lower surface of the reinforcing layer 13. The lower surface of the reinforcing layer 13 has a sound-absorbing layer 14 laid on the lower surface of the sound-absorbing layer 14. The lower surface of the waterproof layer 7 has a moisture-proof and breathable layer 15 laid on the lower surface of the waterproof layer 7. The face paper 2 is laid on the lower surface of the waterproof layer 7.
[0027] Isolation layer 1 9 and isolation layer 2 12: are located on one side of the core board 1 corresponding to the back paper 3 and the face paper 2, respectively, and play an isolation and buffering role, reducing the impact of the functional layers at both ends of the core board 1 on the performance of the core board 1, and can also block moisture and humidity from directly penetrating the core board 1 to a certain extent.
[0028] Insulation layer 10: It uses insulation materials such as polystyrene foam board and polyurethane foam. Air has a very low thermal conductivity, which can effectively hinder heat transfer and achieve thermal insulation.
[0029] Fiberglass mesh 11: On the upper surface of the insulation layer 10, fiberglass has high strength and high modulus characteristics. When the gypsum board is subjected to external impact, bending or deformation due to temperature changes, the mesh can evenly disperse the stress, prevent the core 1 from cracking, and enhance the gypsum board's impact resistance and deformation resistance.
[0030] Antibacterial and mildew-proof layer 4: Contains antibacterial and mildew-proof agents to inhibit the growth and reproduction of microorganisms on the surface of core board 1, and prevent damage to the board and the generation of odors due to microbial erosion;
[0031] Waterproof layer 5: blocks external moisture and water from penetrating the core board 1, preventing the core board 1 from absorbing water, softening, and reducing its strength;
[0032] Wear-resistant layer 6 and wear-resistant layer 8: These are laid on the upper surface of the backing paper 3 and the lower surface of the face paper 2, respectively. They are made of wear-resistant materials. During the handling, installation and daily use of gypsum board, the wear-resistant layers can resist the damage to the paper surface caused by external forces such as friction and scratching, and prevent the paper surface from being damaged, thus affecting the appearance and performance of the board.
[0033] Reinforcing layer 13: Using high-strength materials such as carbon fiber cloth and glass fiber cloth, and through close bonding with the core 1, the reinforcing layer 13 can further improve the flexural strength and load-bearing capacity of the gypsum board;
[0034] Sound-absorbing layer 14: Generally composed of porous materials such as sound-absorbing cotton and sound-absorbing panels, it improves the sound insulation performance of gypsum board;
[0035] Waterproof layer 7: Waterproof coatings or films such as silicone waterproofing agent and acrylic emulsion are used to further enhance the waterproof performance of gypsum board. Together with waterproof layer 5, they form double waterproof protection to ensure that the core 1 of the board is not eroded by water.
[0036] Moisture-proof and breathable layer 15: Made of special polymer material, it has one-way breathability, preventing external moisture from entering the interior of the gypsum board, while moisture inside the board can be discharged through the vents, avoiding moisture accumulation that could cause the board to deform or become moldy.
[0037] Working principle:
[0038] In the first step, regarding waterproofing and moisture-proofing, between the core board 1 and the backing paper 3, the antibacterial and mildew-proof layer 4 contains antibacterial components that can destroy the cell structure of bacteria and mold, inhibit the growth of microorganisms, and prevent the performance of the board from deteriorating due to microbial erosion. The waterproof layer 5 can block the contact between external moisture and the core board 1, preventing moisture from penetrating the core board 1. Between the core board 1 and the face paper 2, the waterproof layer 7 is in direct contact with the outside, blocking moisture from entering. The moisture-proof and breathable layer 15 utilizes special material properties to prevent external moisture from entering while allowing moisture inside the board to escape, avoiding problems such as board deformation and mold caused by moisture accumulation.
[0039] In the second step, the core board 1 provides initial strength as the foundation, while the fiberglass mesh 11 and the reinforcing layer 13 reinforce the upper and lower surfaces of the board, effectively dispersing external forces and improving impact resistance, flexural strength and load-bearing capacity. This enables the gypsum board to stably bear its own weight and external loads when used as building components such as ceilings and partitions, reducing the risk of deformation and breakage.
[0040] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.
Claims
1. A lightweight, high-strength paper-faced gypsum board, comprising a core (1), a facing paper (2), and a backing paper (3), characterized in that, The core board (1) is provided with a waterproof structure on the side corresponding to the back paper (3). The waterproof structure includes an antibacterial and mildew-proof layer (4) and a water-proof layer (5). The antibacterial and mildew-proof layer (4) is provided on the upper surface of the core board (1). The water-proof layer (5) is laid on the upper surface of the antibacterial and mildew-proof layer (4). The back paper (3) is laid on the upper surface of the water-proof layer (5). The upper surface of the back paper (3) is provided with a first anti-wear layer (6). The core board (1) is provided with a waterproof layer (7) on the side corresponding to the face paper (2). The face paper (2) is provided on the lower surface of the waterproof layer (7). The lower surface of the face paper (2) is provided with a second anti-wear layer (8).
2. The lightweight, high-strength paper-faced gypsum board as described in claim 1, characterized in that, The core board (1) has an isolation layer (9) laid on the side corresponding to the back paper (3).
3. The lightweight, high-strength paper-faced gypsum board as described in claim 2, characterized in that, The upper surface of the isolation layer (9) is covered with an insulation layer (10).
4. The lightweight, high-strength paper-faced gypsum board as described in claim 3, characterized in that, The upper surface of the insulation layer (10) is covered with a glass fiber mesh (11); wherein, the antibacterial and mildew-proof layer (4) is laid on the upper surface of the glass fiber mesh (11).
5. A lightweight, high-strength paper-faced gypsum board as described in claim 1, characterized in that, The core board (1) has an isolation layer (12) laid on one side of the face paper (2).
6. The lightweight, high-strength paper-faced gypsum board as described in claim 5, characterized in that, The lower surface of the second isolation layer (12) is covered with a reinforcing layer (13).
7. A lightweight, high-strength paper-faced gypsum board as described in claim 6, characterized in that, The lower surface of the reinforcing layer (13) is covered with a sound-absorbing layer (14); wherein, the waterproof layer (7) is laid on the lower surface of the sound-absorbing layer (14).
8. A lightweight, high-strength paper-faced gypsum board as described in claim 1, characterized in that, The lower surface of the waterproof layer (7) is covered with a moisture-proof and breathable layer (15); wherein, the face paper (2) is laid on the lower surface of the waterproof layer (7).