Fiber mat for anti-crack composite layer, method of production and method of laying

Abstract

The present application relates to the technical field of building materials, in particular to a fiber mat for anti-cracking composite layer, a production method and a laying method thereof, the fiber mat for anti-cracking composite layer is irregularly fluff-shaped on at least one side of the length direction two side edges, the production method comprises the following steps: raw material preparation, dispersion and netting, adhesion and curing, and winding and packaging, when the fiber mat produced by the above method is laid in an overlapping manner, the fluff-shaped structure is convenient to place on the upper side, the overlapping thickness is reduced, and the shadow generated by the regular edge overlapping trace in the putty layer and the primer layer is avoided visually, the subsequent thickening putty material is saved, and the appearance of the decorative layer is ensured.

Description

Technical Field

[0001] This invention relates to the field of building materials technology, and in particular to fiber felt for crack-resistant composite layers, its production method, and its laying method. Background Technology

[0002] Fiber felt for crack-resistant composite layers is a multifunctional building material, often laid between mortar leveling layers and decorative layers to enhance the crack resistance of the structure. It is widely used in various aspects of building structure reinforcement, insulation, and waterproofing. During construction, after laying the fiber felt, a layer of putty is applied for leveling, followed by a primer coat before applying the decorative layer.

[0003] During the laying of fiber felt for crack-resistant composite layer, overlapping is often used between adjacent fiber felts to ensure continuity and integrity. However, it is worth noting that the overlapping fiber felts form a thickened overlap and the edge of the regular fiber felt above the overlap, which can create a shadow on the surface of the putty layer and primer layer under light, affecting the aesthetics. Usually, the putty layer needs to be thickened to avoid the shadow, which wastes labor and materials. Furthermore, the thickened putty layer requires a longer drying time, which may delay subsequent processes.

[0004] Therefore, in order to solve the above problems, there is a need for a fiber felt material and laying method for crack-resistant composite layers that better meet the application requirements. Summary of the Invention

[0005] In view of this, the purpose of this invention is to propose a fiber felt for crack-resistant composite layers, a production method thereof, and a method for laying the fiber felt. By designing the irregular edges of the fiber felt, the overlapping method during the laying process is improved, thereby reducing the use of leveling putty.

[0006] To achieve the above objectives, the present invention provides a fiber felt for a crack-resistant composite layer, wherein the fiber felt is formed by irregularly arranging and bonding fiber filaments, and at least one edge on both sides of the length direction is irregularly fuzzy.

[0007] Furthermore, the fiber filament is one of polyester fiber, glass fiber or carbon fiber, the fiber filament diameter is 3µm~6µm and its length is 5cm~10mm, the fiber felt width is 1m~2m and its length is 30m~50m, and the fiber felt is coiled and placed.

[0008] Furthermore, the production method of the fiber felt for the above-mentioned crack-resistant composite layer includes the following steps: S1: Raw material preparation: Cut the prepared fiber raw materials into fiber filaments with a length of 5cm to 10cm; S2: Dispersed into a web, short chopped fibers fall freely from a height and disperse onto a horizontally moving conveyor belt below, forming a fiber web; S3: Adhesion and curing. Adhesive is evenly laid in the fiber felt for bonding. A hot press is used to compact the fiber web by heating and applying pressure to bond the fibers and adhesive together to form a fiber felt. The fiber felt is then sent to a dryer for drying and curing to form the finished product. S4: Roll up and package the finished fiber felt. Each roll of fiber felt is 30m to 50m in length.

[0009] Preferably, in step S2, the width of the conveyor belt is 1~2m, the width of the fiber web formed by the dispersed fiber filaments on the conveyor belt is consistent with the width of the conveyor belt, and the edges are irregularly fuzzy. In step S4, the irregular fuzz on at least one side of the length direction of the finished fiber felt is not cut.

[0010] Furthermore, the method for laying the fiber felt for the crack-resistant composite layer includes the following steps: S1: Base surface preparation, cleaning and leveling the base surface; S2: Cut the fiber felt. Cut the fiber felt to the required length according to the dimensions of the base surface. A certain amount of allowance should be left when cutting to facilitate edge treatment. S3: Apply adhesive. Use a trowel or roller to apply a thin, even layer of adhesive to the substrate. Ensure the adhesive is evenly distributed during application. S4: Lay the fiber felt. Lay the cut fiber felt flat on the base surface coated with adhesive, ensuring that the length direction of the fiber felt (the side with the fluffy edge) is horizontal. When overlapping in the length direction, the fluffy side should always be on top. Use a scraper or roller to flatten the fiber felt from the middle to the perimeter, removing air and excess adhesive, and ensuring that the fiber felt is tightly attached to the wall without wrinkles. S5: Edge treatment, trimming the edges of the fiber felt that exceed the base surface dimensions.

[0011] Furthermore, in step S3, the adhesive is either a polymer mortar or a latex primer.

[0012] Optionally, step S6 can be added after step S5 to apply another layer of adhesive to the surface of the fiber felt.

[0013] The beneficial effects of this invention are: 1. This invention irregularizes the edges of the fiber felt used in the crack-resistant composite layer, improving the overlapping method in actual installation. The overlapping of the irregular fuzzy edges reduces the overlap thickness and visually avoids the shadows caused by regular edge overlap marks on the putty and primer layers. This avoids the need for subsequent putty thickening and leveling to eliminate shadows, saving materials and ensuring aesthetics.

[0014] 2. The irregular fuzzy edge design of the fiber felt for the crack-resistant composite layer of this invention simplifies the production process, saves production materials, reduces production waste, and is energy-saving and environmentally friendly. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the fiber felt structure for the crack-resistant composite layer of the present invention; Figure 2 This is a schematic diagram illustrating the laying effect of an embodiment of the present invention; Figure 3 This is a schematic diagram illustrating the comparative laying effect of the present invention. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments and comparative examples. Example

[0018] An embodiment of the present invention employs a method for producing fiber felt for crack-resistant composite layers, comprising the following steps: S1: Raw material preparation, cut the prepared glass fibers with a diameter of 3µm~6µm into 5mm~10mm; S2: Dispersed into a web, short-cut fibers fall freely from a height, dispersing and landing on a horizontally moving conveyor belt with a width of 1m to 2m below, forming a fiber web with irregular, fuzzy edges. The width of the fiber web is the same as the width of the conveyor belt, which is 1m to 2m. S4: Adhesive Hot Pressing. 0.5%~2% (by weight of the fiber web) of acrylic copolymer adhesive is evenly laid in the fiber web for bonding. A hot press is used to compact the fiber web by heating and applying pressure, causing the fibers and adhesive to bond together to form a fiber felt. The heating temperature is 100℃~150℃, and the pressure is 0.5MPa~2MPa. The fiber felt is then sent to a dryer for drying and curing. The drying and curing temperature is 100℃~120℃, and the drying and curing time is 1min~3min, forming the finished product. S5: Roll up and package. The fuzzy edges on both sides of the finished fiber felt do not need to be trimmed. The length should be coiled up in 30m~50m coils.

[0019] The fiber felt for the crack-resistant composite layer obtained by the above production method is as follows: Figure 1 As shown.

[0020] Working principle: This production method adopts dry web forming technology, which has a fast production speed, low energy consumption, and high flexibility. Compared with the traditional production process of fiber felt, it eliminates the edge cutting process because it is necessary to retain the fluffy edge, thus saving raw materials, reducing production waste, and being energy-saving and environmentally friendly.

[0021] The construction and laying method of the fiber felt for the crack-resistant composite layer used in this embodiment is as follows: S1: Base surface preparation, remove dust, dirt, oil stains and other debris from the base surface to ensure that the wall surface is flat and clean; S2: Cut the fiber felt. Cut the fiber felt to the required length according to the dimensions of the base surface. A certain amount of allowance should be left when cutting to facilitate edge treatment. S3: Apply adhesive. Use a trowel or roller to evenly apply a layer of polymer mortar adhesive to the base surface. S4: Lay the fiber felt horizontally (the width of the fiber felt is vertical) on the adhesive. Use a scraper or roller to flatten the fiber felt from the center outwards to remove air and excess adhesive. Place the irregular fuzzy edges at the overlap on top, with the overlap width similar to the width of the fuzzy edges. Use a brush to smooth and flatten the irregular fuzzy parts to ensure that the irregular fuzzy edges overlap flat. S5: Edge treatment, trimming the edges of the fiber felt that exceed the base surface dimensions.

[0022] S6: Apply adhesive a second time to enhance the bonding effect of the fiber felt.

[0023] The paving effect diagram generated based on the above paving method is as follows: Figure 2 As shown.

[0024] Working principle: When laying fiber felt in the crack-resistant composite layer, the splicing part in the length direction is much larger than that in the width direction. At the same time, the shadows formed by the overlapping thickened part and regular edges in the plaster mortar layer are more obvious in the horizontal direction. Therefore, the horizontal laying method is adopted to ensure that the irregular fluffy edges of the fiber felt are in the horizontal overlapping part. The irregular fluffy edges are the irregular arrangement of fibers. For the fluffy overlapping parts on both sides of the length direction, the overlap thickness can be reduced by the contact and interlocking of the irregular fluffy edges. At the same time, the irregular fluffy edges located at the top will not produce obvious visual shadows in the putty and primer layers.

[0025] Comparative Example This comparative example uses fiber felt with regular-edge crack-resistant composite layer overlapping. The production process is a traditional one and will not be described in detail. The laying method of fiber felt with regular crack-resistant composite layer includes the following steps: S1: Base surface preparation, remove dust, dirt, oil stains and other debris from the base surface to ensure that the wall surface is flat and clean; S2: Cut the fiber felt. Cut the fiber felt to the required length according to the dimensions of the base surface. A certain amount of allowance should be left when cutting to facilitate edge treatment. S3: Apply adhesive. Use a trowel or roller to evenly apply a layer of polymer mortar adhesive to the base surface. S4: Lay the fiber felt. Lay the fiber felt on the adhesive and use a scraper or roller to flatten it from the center of the fiber felt outwards to remove air and excess adhesive. Lay adjacent fiber felts together by directly overlapping.

[0026] S5: Edge treatment, trimming the edges of the fiber felt that exceed the base surface dimensions.

[0027] S6: Apply adhesive a second time to enhance the bonding effect of the fiber felt.

[0028] The paving effect diagram generated based on the above paving method is as follows: Figure 3 As shown.

[0029] Through comparison, it was found that... Figure 3 The overlapping edges of the fiber felt reveal obvious and regular seam marks, and a noticeable overlapping shadow will be produced at the overlapping edges of the fiber felt at the regular edges of the putty and primer layers. Figure 2 The two pieces of fiber felt with overlapping edges are integrated without obvious overlap marks. No overlap shadows will appear in the putty and primer layers, avoiding the use of extra putty to cover up overlap marks, resulting in a more aesthetically pleasing finish.

[0030] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the invention is limited to these examples; within the framework of the invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity.

Claims

1. A fiber felt for a crack-resistant composite layer, characterized in that, The fiber felt is made of irregularly arranged and bonded fiber filaments. It is used to lay on a building substrate and coat it with putty and primer. At least one edge of the fiber felt along its length is irregularly fuzzy. This irregular fuzzy edge is configured to reduce thickness abrupt changes at the overlap when adjacent fiber felts overlap, thereby preventing shadows on the subsequent putty and primer layers. The fiber filaments are one of polyester, glass, or carbon fiber, with a diameter of 3µm to 10µm and a length of 5cm to 10cm. The fiber felt is 1m to 2m wide and 30m to 50m long, and is coiled and placed. The method for producing the fiber felt for the crack-resistant composite layer specifically includes the following steps: S1: Raw material preparation: Cut the prepared fiber raw materials into fiber filaments with a length of 5cm to 10cm; S2: Dispersed into a web, short chopped fibers fall freely from a height and disperse onto a horizontally moving conveyor belt below, forming a fiber web; S3: Adhesion and curing. Adhesive is evenly laid in the fiber web for bonding. A hot press is used to compact the fiber web by heating and applying pressure to bond the fibers and adhesive together to form a fiber felt. The fiber felt is then sent to a dryer for drying and curing to form the finished product. S4: Roll up and package the finished fiber felt, with each roll of fiber felt being 30m~50m in length; In step S2, the width of the conveyor belt is 1-2m, and the width of the fiber web formed by the dispersed fiber filaments on the conveyor belt is the same as the width of the conveyor belt, with irregular fuzzy edges. In step S4, the irregular fuzz on at least one side of the length direction of the finished fiber felt packaged is not cut.

2. The method for laying fiber felt for crack-resistant composite layer as described in claim 1, characterized in that, Includes the following steps: A1: Base preparation, cleaning and leveling the base surface; A2: Cut the fiber felt. Cut the fiber felt to the required length according to the dimensions of the base surface. When cutting, a certain amount of allowance should be left to facilitate edge treatment. A3: Apply adhesive. Use a trowel or roller to apply a thin, even layer of adhesive to the wall surface, ensuring that the adhesive is evenly distributed. A4: Lay the fiber felt. Lay the cut fiber felt flat on the base surface coated with adhesive, ensuring that the fuzzy side of the fiber felt's length edge is horizontal. When overlapping along the length, the fuzzy side should always be on top, and the overlap width should be the same as the width of the fuzzy edge. Use a scraper or roller to flatten the fiber felt from the center outwards to remove air and excess adhesive, ensuring that the fiber felt adheres tightly to the wall without wrinkles. A5: Edge treatment, trimming the edges of the fiber felt that exceed the base surface dimensions.

3. The method for laying fiber felt for crack-resistant composite layer according to claim 2, characterized in that, In step A3, the adhesive is either polymer mortar or latex paint primer.

4. The method for laying fiber felt for crack-resistant composite layer according to claim 2, characterized in that, After step A5, a second adhesive application step can be added, whereby another layer of adhesive is applied to the surface of the fiber felt in the crack-resistant composite layer.

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