CN214461970U - Wall coating crack control structure - Google Patents

Abstract

The application relates to the field of building wall surface structures, and discloses a wall surface coating anti-cracking structure which specifically comprises a wall body and a coating coated on the surface of the wall body, wherein the coating sequentially comprises an anti-cracking structure layer, a primer layer, a putty layer and a finish paint layer from inside to outside; the anti-cracking structure layer comprises an anti-cracking net and a leveling layer for leveling the surface of the anti-cracking structure layer. This application utilizes anti structural layer to resist the wall body because the stress of deformation and production that reasons such as atress is uneven or expend with heat and contract with cold caused to reduce the phenomenon of coating knife coating inequality and shrink hollowing, thereby avoid the production of wall crackle.

Description

Wall coating crack control structure

Technical Field

The application relates to building wall structure field, concretely relates to wall coating crack control structure.

Background

In house decoration, the conventional wall surface treatment of the inner wall usually comprises the steps of coating an interface agent, scraping putty, coating a primer and finishing paint in sequence. After the wall surface is coated and brushed, the situation that the painted surface cracks frequently occurs in the using process, and the main reasons of the cracking include: (1) the foundation at the joint of the bearing wall and the brick wall is unstable and subsides; (2) shrinkage or hollowing of the cement layer or the putty layer; (3) the stress above the door beam is inconsistent with that of the side wall; (4) expansion and contraction at the joint, and the like. In fact, the cause of surface cracking in wall latex paints and the like is the cracking of the primer layer, not the topcoat layer. Therefore, in order to avoid cracking of the wall surface coating, the bottom layer should be used to improve the deformation resistance and stress balance of the bottom layer coating from the root.

SUMMERY OF THE UTILITY MODEL

In order to solve the wall coating that prior art exists and crack easily and influence pleasing to the eye and the ageing problem of wall with higher speed easily, this application provides a wall coating crack control structure.

In order to achieve the purpose, the technical scheme adopted by the application is as follows:

a wall surface coating anti-cracking structure comprises a wall body and a coating coated on the surface of the wall body, wherein the coating sequentially comprises an anti-cracking structure layer, a primer layer, a putty layer and a finish paint layer from inside to outside; the anti-cracking structure layer comprises an anti-cracking net and a leveling layer for leveling the surface of the anti-cracking structure layer.

The root of the visual surface coating crack lies in the bottom coating crack, and the main reason causing the bottom coating crack is often the reasons of uneven bottom coating blade coating, shrinkage hollowing, uneven stress or expansion with heat and contraction with cold, in order to avoid the wall coating crack, the scheme adopts the method of firstly setting the anti-crack structural layer and then sequentially coating the primer, the putty and the finish, and utilizes the anti-crack structural layer to resist the deformation and the stress caused by uneven stress or expansion with heat and contraction with cold of the wall body, and reduces the phenomena of uneven coating blade coating and shrinkage hollowing. Specifically, the anti-cracking structure layer comprises an anti-cracking net and a leveling layer, the anti-cracking net is installed on the wall surface in advance before the wall surface is coated by scraping, and then the leveling layer is coated by scraping, so that the surface of the anti-cracking structure layer is smooth. The anti-cracking net is arranged, so that the stress of the coating is more balanced, the deformation or uneven stress of the wall body can be resisted, and the wall surface is prevented from cracking.

It is worth to be noted that, in the scheme, the putty layer is coated with the primer firstly and then is scraped with the putty in batches on the primer layer, so that the arrangement of the leveling layer is adapted, the primer can seal the paint of the leveling layer firstly, and the phenomenon that the adhesive force of the putty is influenced by the fact that the leveling layer absorbs the sizing material in the putty is avoided.

Further, the anti-cracking net comprises a first net layer, a second net layer and a plurality of positioning sleeves for connecting the first net layer and the second net layer; each mesh in the first net layer and the second net layer is a rhombic mesh formed by the mesh lines with two ends connected with the positioning sleeves.

The method for preventing the wall surface coating from cracking mainly comprises two ideas of rigid cracking prevention and flexible cracking prevention, wherein the rigid cracking prevention means that the coating does not crack when the coating has enough tensile strength and ultimate stretching, but the rigid cracking prevention is difficult to achieve due to the limitation of coating materials in practical application. The flexible anti-cracking is the best anti-cracking principle, which means that the coating has certain deformability and can deform along with stress microscopically to offset uneven stress so as to avoid the generation of cracks. The anti-cracking net in the scheme adopts a flexible anti-cracking principle, overcomes the stress of uneven stress and expansion with heat and contraction with cold by using the anti-cracking net, and effectively avoids the phenomenon of uneven blade coating.

In addition, the anti-cracking net in the scheme is a double-layer net structure formed by connecting the first net layer and the second net layer, and compared with a single-layer net structure, the direction of the decomposition stress of the anti-cracking net is increased, so that the anti-cracking performance of the anti-cracking net is enhanced.

It should be noted that, in order to fix the anti-cracking net on the wall, a fixing method in the prior art may be adopted, for example, a hanging patch is fixed on the wall, but due to the special double-layer net structure of the anti-cracking net in the present scheme, the prior fixing method may cause the problems that the anti-cracking net is not fixed firmly enough or the surface is easy to bulge after being fixed, and the like.

Furthermore, the diameter of one end, close to the wall body, of the positioning sleeve is smaller than that of the other end of the positioning sleeve, so that the mesh area of the first net layer is larger than that of the second net layer. In the scheme, the diameter of the cross section of the positioning sleeve connecting the first net layer and the second net layer is changed, so that the anti-cracking net generates the phenomena of gradual change of stress layer by layer and flexible stress release between double-layer net structures on the principle of flexible anti-cracking, and the performance of avoiding cracks of the anti-cracking net is further enhanced.

Furthermore, the positioning sleeve is communicated along the axis to form a hollow structure, and at least two positioning holes are formed in the circumferential surface. In the above-mentioned scheme, the position sleeve plays the effect of connecting the net line and connecting first stratum reticulare and second stratum reticulare, carries out further improvement to the position sleeve in this scheme for when fixed crack control net, can be through the rigidity of position sleeve, be convenient for fix a position and provide the impetus for the fixed of crack control net.

Furthermore, a fastener is arranged at the center of the positioning sleeve to fixedly connect the positioning sleeve with the wall.

Furthermore, the circumference of the fastener is provided with an extension part which is buckled with the positioning hole and then contacts with the surface of the wall body.

Furthermore, a threaded through hole is formed in the center of the fastener and matched with the screw, so that the fastener and the anti-cracking net are fixed on the wall through the screw.

Furthermore, two anti-cracking structure layers are arranged between the surface of the wall body and the primer layer. Specifically, the wall body, the first layer of anti-cracking net, the first leveling layer, the second layer of anti-cracking net, the second leveling layer, the primer layer, the putty layer and the finish paint layer are sequentially arranged from inside to outside, and two anti-cracking structure layers are arranged, so that the bearing capacity of the wall body can be further improved, and the thermal expansion and cold contraction stress of the wall body can be effectively reduced.

The beneficial effect of this application is: this application utilizes anti structural layer to resist the wall body because the stress of deformation and production that reasons such as atress is uneven or expend with heat and contract with cold caused to reduce the phenomenon of coating knife coating inequality and shrink hollowing, thereby avoid the production of wall crackle.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic view of the layered structure of example 1 in the present application;

FIG. 2 is a front view of a rip fence in the present application;

FIG. 3 is a schematic structural view of a rip fence in the present application;

FIG. 4 is an enlarged partial schematic view at A of FIG. 3;

FIG. 5 is a side view of a rip fence in the present application;

FIG. 6 is a structural schematic of a locating sleeve and fastener of the present application;

FIG. 7 is a schematic diagram of the layered structure of example 3 in the present application;

in the figure: 1-a wall body; 2-crack resistant structural layer; 201-anti-cracking net; 202-a leveling layer; 3-a primer layer; 4-putty layer; 5-finishing paint layer; 6-a first web layer; 7-a second web layer; 8-positioning sleeve; 9-positioning holes; 10-a fastener; 1001-extension; 1002-a threaded through hole; 11-screws.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. 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 application.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present application, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are used for indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship which is usually placed when the product of the application is used, the description is only for convenience and simplicity, and the indication or suggestion that the referred device or element must have a specific orientation, be constructed in a specific orientation and be operated, and thus, should not be construed as limiting the present application. Furthermore, the appearances of the terms "first," "second," and the like in the description herein are only used for distinguishing between similar elements and are not intended to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like when used in the description of the present application do not require that the components be absolutely horizontal or overhanging, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present application, it should also be noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" should be interpreted broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

Example 1:

the wall surface coating anti-cracking structure shown in fig. 1 comprises a wall body 1 and a coating coated on the surface of the wall body 1, wherein the coating sequentially comprises an anti-cracking structure layer 2, a primer layer 3, a putty layer 4 and a finish paint layer 5 from inside to outside; the anti-cracking structural layer 2 comprises an anti-cracking net 201 and a leveling layer 202 for leveling the surface of the anti-cracking structural layer 2.

The working principle is as follows:

the anti-cracking structure in this application coats in 1 surperficial coating of wall body, when the construction, at first with the anti-cracking net 201 installation in the anti-cracking structure layer 2 be fixed in on wall body 1, then scrape coating screed-coat 202, cover anti-cracking net 201 and make the surfacing, be convenient for carry out the blade coating work of next layer coating. Primer, putty, and topcoat are then applied sequentially over the screed layer 202. The order of adopting earlier priming paint back putty in this application is for adapting to the design of anti structural layer 2 that splits, seals screed-coat 202 to a certain extent with the priming paint earlier, avoids screed-coat 202 because the great sizing material in the putty of absorbing of hole, influences the adhesive force between putty layer 4 and its bottom and the face coating.

The putty has the functions of further filling up the defects of high and low unevenness on the leveling layer 202, enhancing the adhesive force, color development and the like of the finish paint. In addition, in addition to the above functions, the existing putty has more functions such as environmental protection putty or mildew-proof putty due to improvement of raw materials. The finish paint is the last coating, not only has a decorative effect, but also has a protective effect on the coating at the bottom of the finish paint, and avoids the influence of the external environment on the internal coating. It should be noted that the putty layer 4 and the top coat layer 5 in the present application are only referred to as their functions, and are not limited to a layer of putty and a layer of top coat, and according to the construction method known in the art, the number of the coating layers of putty depends on the coating basis, and is often more than two, while the number of the coating layers of top coat depends on various factors such as coating quality, color rendering, construction requirements, and the like, and is often more than two.

It should be noted that, since the leveling layer 202 is a coating for covering the anti-cracking net 201 and has a certain thickness, the material of the leveling layer 202 includes, but is not limited to, cement mortar, etc. In contrast, leveling, which is well known in the art, is to fill up local unevenness of a wall surface, and gypsum and other materials with small particle size, small error after filling and large brittleness are commonly used. And the screed-coat 202 in this application should not use local leveling materials such as gypsum in order to cooperate the coating that crack control net 201 needs the blade coating of large tracts of land, uses the gypsum to cause easily because the wall large tracts of land delaminating fracture scheduling problem is caused to the fragility and the hygroscopicity of gypsum.

Example 2:

in this embodiment, the anti-cracking net 201 is further optimized and limited based on embodiment 1.

As shown in fig. 2 to 5, the anti-cracking net 201 comprises a first net layer 6, a second net layer 7 and a plurality of positioning sleeves 8 for connecting the first net layer 6 and the second net layer 7; each mesh in the first mesh layer 6 and the second mesh layer 7 is a rhombic mesh formed by mesh lines with two ends connected with the positioning sleeve 8. The diameter of one end of the positioning sleeve 8 close to the wall body 1 is smaller than that of the other end, so that the mesh area of the first mesh layer 6 is larger than that of the second mesh layer 7.

The working principle is as follows:

the anti-cracking net 201 is of a double-layer structure as shown in fig. 2, the first net layer 6 and the second net layer 7 are both of diamond-shaped mesh structures, the positioning sleeve 8 is of a truncated cone-like shape, staggered grid lines are connected in each net layer to occupy four corners of each diamond-shaped mesh, and the first net layer 6 and the second net layer 7 are connected. Due to the change of the section diameter of the positioning sleeve 8, the mesh area of the first mesh layer 6 at the position of the positioning sleeve 8 with the larger section diameter is slightly larger than that of the second mesh layer 7 at the position of the positioning sleeve 8 with the smaller section diameter. According to research, the smaller the mesh size is, the better the crack resistance of the anti-cracking mesh 201 is, and the stronger the restriction capability on the appearance of wall cracks is.

When installing crack control net 201 on wall body 1, the one end that the terminal surface diameter of position sleeve 8 is littleer is that second stratum reticulare 7 is close to wall body 1, and the second stratum reticulare 7 that the ability is stronger to appear in the restraint crack sets up with the position of being close to wall body 1 for crack control structure layer 2's anti-cracking effect increases from outside to inside, and the crack of bond coating often from inside to outside produces, is favorable to following the anti-cracking of root cause position.

In order to facilitate the installation and fixation of the anti-cracking net 201 on the wall 1, a fastener 10 is provided and is matched with the positioning sleeve 8 to form a fixed connection between the anti-cracking net 201 and the wall 1, specifically, as shown in fig. 4, in order to match the fastener 10, the positioning sleeve 8 is through and is a hollow structure along an axis, at least two positioning holes 9 are provided on a circumferential surface, and the fastener 10 is installed at the center of the positioning sleeve 8. An extension part 1001 is arranged at the edge position of the fastener 10, so that the extension part 1001 is buckled with the positioning hole 9 and then is contacted with the surface of the wall body 1. Preferably, as shown in fig. 6, the central fitting position of the fastener 10 and the positioning sleeve 8 is set to be circular, and one end of the extension 1001 is set to be at a circumferential position.

In addition, when the anti-cracking net 201 is fixed to the wall 1 by the fastening member 10, an adhesive may be applied to a surface of the fastening member 10 adjacent to the wall 1. Preferably, as shown in fig. 6, a threaded through hole 1002 is formed in the center of the fastener 10, and the threaded through hole 1002 is matched with the screw 11, so that the fastener 10 and the anti-cracking net 201 are fixed on the wall 1 through the screw 11.

It should be noted that, when the anti-cracking net 201 is fixed by using the cooperation of the fasteners 10 and the positioning sleeves 8, the fasteners 10 are not required to be arranged in each positioning sleeve 8, but the fasteners 10 are arranged on the principle that the anti-cracking net 201 is ensured to be installed smoothly according to the actual construction condition, the fasteners 10 for fixing are usually arranged at four corners, and the fasteners 10 are arranged at intervals in the middle part to prevent other positions of the anti-cracking net 201 from protruding.

Example 3:

the present embodiment is further optimized and limited based on the above embodiments.

As shown in fig. 7, two anti-crack structural layers 2 are arranged between the surface of the wall 1 and the primer layer 3. Specifically, as shown in fig. 7, the wall body 1, the first anti-cracking net 201, the first leveling layer 202, the second anti-cracking net 201, the second leveling layer 202, the primer layer 3, the putty layer 4 and the finish paint layer 5 are sequentially arranged from left to right, and the two anti-cracking structure layers 2 are arranged to further improve the bearing capacity of the wall body 1 and effectively offset the thermal expansion and cold contraction stress of the wall body 1. During construction, the first anti-cracking net 201 is fixed on the wall body 1, then the first leveling layer 202 is coated until the first anti-cracking net 201 is completely covered and the surface is smooth, the second anti-cracking net 201 is fixed after the leveling layer 202 is completely dried and fixed, then the second leveling layer 202 is coated until the second anti-cracking net 201 is completely covered and the surface is smooth, and primer is brushed after the second anti-cracking net is dried to seal and protect the two anti-cracking structure layers 2 and prevent the two anti-cracking structure layers from absorbing sizing materials in subsequent coatings. And then performing batch putty scraping, preferably using functional putty such as mildew-proof putty and the like, wherein the batch scraping layer number depends on the construction foundation, and preferably two or more layers are batch scraped. And finally, coating finish paint to play a role in protecting the internal coating and decorating.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (8)

1. The utility model provides a wall coating crack control structure, includes wall body (1) and coat in the coating on wall body (1) surface, its characterized in that: the coating comprises an anti-cracking structure layer (2), a primer layer (3), a putty layer (4) and a finish paint layer (5) from inside to outside in sequence;

the anti-cracking structural layer (2) comprises an anti-cracking net (201) and a leveling layer (202) for leveling the surface of the anti-cracking structural layer (2).

2. The wall coating anti-cracking structure of claim 1, which is characterized in that: the anti-cracking net (201) comprises a first net layer (6), a second net layer (7) and a plurality of positioning sleeves (8) for connecting the first net layer (6) and the second net layer (7);

each mesh of the first mesh layer (6) and the second mesh layer (7) is a rhombic mesh formed by mesh lines with two ends connected with the positioning sleeve (8).

3. The wall coating anti-cracking structure of claim 2, which is characterized in that: the diameter of one end of the positioning sleeve (8) close to the wall body (1) is smaller than that of the other end of the positioning sleeve, so that the mesh area of the first mesh layer (6) is larger than that of the second mesh layer (7).

4. The wall coating anti-cracking structure of claim 3, which is characterized in that: the positioning sleeve (8) is of a hollow structure in a penetrating mode along the axis, and at least two positioning holes (9) are formed in the circumferential surface.

5. The wall coating anti-cracking structure of claim 4, which is characterized in that: the center of the positioning sleeve (8) is provided with a fastener (10) to fixedly connect the positioning sleeve (8) with the wall body (1).

6. The wall coating anti-cracking structure of claim 5, wherein: the periphery of the fastener (10) is provided with an extension part (1001) which is buckled with the positioning hole (9) and then is contacted with the surface of the wall body (1).

7. The wall coating anti-cracking structure of claim 6, which is characterized in that: the center of the fastener (10) is provided with a threaded through hole (1002), and the threaded through hole (1002) is matched with the screw (11) to ensure that the fastener (10) and the anti-cracking net (201) are fixed on the wall body (1) through the screw (11).

8. The wall coating anti-cracking structure as claimed in any one of claims 1 to 7, wherein: and two anti-cracking structural layers (2) are arranged between the surface of the wall body (1) and the primer layer (3).

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