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

Abstract

The invention relates to the technical field of building materials, in particular to a fiber felt for an anti-crack composite layer, a production method and a laying method thereof.The fiber felt for the anti-crack composite layer is in an irregular flocculent shape on at least one side of the edges of the two sides in the length direction, and the production method of the fiber felt comprises the following steps of raw material preparation, dispersion to form a net, bonding curing and rolling packaging. When the fiber felt produced through the method is laid in a lap joint mode, the flocculent fiber felt is conveniently placed on the upper portion, the lap joint thickness is reduced, meanwhile, shadows generated by regular edge lap joint traces on a putty layer and a primer layer are avoided visually, follow-up thickening putty materials are saved, and the attractiveness of a decoration layer is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of building materials, in particular to a fiber felt for a crack-resistant composite layer, a production method and a laying method thereof. Background Art

[0002] Fiber felt for anti-crack composite layer is a multifunctional building material, which is often laid between mortar leveling layer and decorative layer to enhance the anti-crack performance of the structure. It is widely used in reinforcement, insulation, waterproofing and other aspects of building structure. During construction, after laying fiber felt, use a layer of putty for leveling, and then apply primer for decorative layer construction.

[0003] During the laying of fiber felt for anti-cracking composite layer, overlapping method is often used between adjacent fiber felts to ensure the continuity and integrity of the laid fiber felts. However, it is worth considering that the overlapping fiber felts form overlapping thickened parts and regular fiber felt edges above the overlapping parts. Under the irradiation of light, a shadow will be produced on the surface of putty layer and primer layer, affecting the appearance. It is usually necessary to thicken the putty layer to avoid the shadow, which not only wastes artificial materials, but also because the thickened putty layer takes longer to dry completely, it may delay the subsequent process.

[0004] Therefore, in order to solve the above problems, a fiber felt material and laying method for a related crack-resistant composite layer that better meets the use requirements is needed. Summary of the invention

[0005] In view of this, the purpose of the present invention is to propose a fiber felt for a crack-resistant composite layer, a production method and a laying method thereof, and to improve the overlapping method during the laying process of the fiber felt through the irregular design of the edge of the fiber felt to reduce the use of leveling putty.

[0006] Based on the above purpose, the present invention provides a fiber felt for a crack-resistant composite layer. The fiber felt is made of irregularly arranged, glued and flattened fiber filaments, and at least one edge on both sides of the length direction is irregularly fluffy.

[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.

[0008] Furthermore, the production method of the fiber felt for the above-mentioned crack-resistant composite layer comprises the following steps: S1: Raw material preparation, cutting the prepared fiber raw materials into fiber strands of 5 cm to 10 cm in length; S2: Dispersed into a web, the short-cut fiber strands fall freely from a higher place and disperse onto the horizontally moving conveyor belt below to form a fiber web; S3: bonding and curing, evenly laying the adhesive in the fiber mat for bonding, using a hot press to compact the fiber web by heating and applying pressure so that the fiber filaments and the adhesive are bonded to each other to form a fiber mat, and sending the fiber mat to a dryer for drying and curing to form a finished product; S4: Rolling and packaging. The finished fiber felt is coiled and placed. The length of each roll of fiber felt is 30m~50m.

[0009] Preferably, in step S2, the width of the conveyor belt is 1~2m, the width of the fiber web formed by the fiber filaments scattered on the conveyor belt is consistent with the width of the conveyor belt, and the edges are irregular fluffy. In step S4, the irregular fluff on at least one side of the edge of the two sides in the length direction of the rolled and packaged fiber felt finished product is not cut.

[0010] Furthermore, the method for laying the fiber felt for the anti-cracking composite layer comprises the following steps: S1: Base surface preparation, cleaning and leveling the base surface; S2: Cut the fiber felt to the required length according to the size of the base surface. A certain margin should be left during cutting to facilitate edge processing. S3: Apply the adhesive, use a trowel or roller brush to evenly apply a thin layer of adhesive on the base surface. Make sure the adhesive is evenly distributed when applying; S4: Lay the fiber mat. Lay the cut fiber mat flat on the base surface coated with adhesive. Make sure that the length direction of the fiber mat (the side with fluffy edge) is in the horizontal direction. When overlapping in the length direction, the fluffy side is always on the top. Use a scraper or roller to flatten the fiber mat from the middle to the surroundings to remove air and excess adhesive. Make sure that the fiber mat fits tightly to the wall without wrinkles. S5: Edge processing: trimming the edges of the fiber felt that exceed the base surface size.

[0011] Furthermore, in step S3, the adhesive is one of polymer mortar and latex paint primer.

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

[0013] Beneficial effects of the present invention: 1. The present invention performs irregular processing on the edge of the fiber felt for the crack-resistant composite layer, improves the overlapping method in actual laying, and the overlapping of the irregular wool edges reduces the overlapping thickness. At the same time, it visually avoids the shadows caused by the overlapping marks of the regular edges on the putty layer and the primer layer, and avoids the use of materials required for the subsequent thickening and leveling of putty to eliminate the shadows, thereby saving materials and ensuring beauty.

[0014] 2. The design and treatment of irregular fluff on the edge of the fiber felt for the crack-resistant composite layer of the present invention simplifies the production steps, saves production materials, reduces production waste, and is energy-saving and environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 This is a schematic diagram of the structure of the fiber felt for the anti-cracking composite layer of the present invention; Figure 2 This is a schematic diagram of the laying effect of an embodiment of the present invention; Figure 3 It is a schematic diagram of the laying effect of the comparative example of the present invention. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments and comparative examples. Example

[0018] A method for producing a fiber felt for a crack-resistant composite layer adopted in an embodiment of the present invention comprises the following steps: S1: Raw material preparation, cutting the prepared glass fiber with a diameter of 3µm~6µm into 5mm~10mm; S2: Dispersed into a web, the short-cut fiber strands fall freely from a higher place and land on a horizontally moving conveyor belt with a width of 1m~2m below, forming a fiber web with irregular flocculent edges. The width of the fiber web is consistent with the width of the conveyor belt, which is 1m~2m. S4: Bonding and hot pressing, evenly laying 0.5%~2% of the mass of the fiber web on the acrylate copolymer adhesive for bonding, using a hot press to compact the fiber web by heating and applying pressure so that the fiber filaments and the adhesive are bonded to each other to form a fiber mat, the heating temperature is 100℃~150℃, the pressure is 0.5MPa~2MPa, the fiber mat is sent to a dryer for drying and curing, the drying and curing temperature is 100℃~120℃, the drying and curing time is 1min~3min, and a finished product is formed; S5: Rolling and packaging. The fluffy edges on both sides of the finished fiber felt in the length direction do not need to be cut. The length is 30m~50m in coils.

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

[0020] Working principle: This production method adopts dry web forming technology, which has fast production speed, low energy consumption and high flexibility. Compared with the traditional production process of fiber felt, it needs to retain the fluffy edge, eliminating the edge cutting process, saving production raw materials, reducing production waste, and saving energy and protecting the environment.

[0021] The construction and laying method of the fiber felt for the anti-cracking composite layer used in this embodiment is as follows: S1: Prepare the base surface, remove dust, dirt, oil stains and other debris from the base, and ensure that the wall surface is flat and clean; S2: Cut the fiber felt to the required length according to the size of the base surface. A certain margin should be left during cutting to facilitate edge processing. S3: Apply the adhesive, use a trowel or roller to evenly apply a layer of polymer mortar adhesive on the base surface; S4: Lay the fiber felt, spread the fiber felt horizontally (the width direction of the fiber felt is the vertical direction) on the adhesive, use a scraper or roller to flatten the fiber felt from the middle to the surrounding, remove air and excess adhesive, place the irregular wool edge at the overlap on top, the overlap width is similar to the wool edge width, use a brush to straighten and flatten the irregular wool part, and ensure that the irregular wool edge overlaps evenly; S5: Edge processing: trimming the edges of the fiber felt that exceed the base surface size.

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

[0023] The paving effect diagram produced by the above paving method is as follows Figure 2 shown.

[0024] Working principle: When laying fiber felt in the anti-cracking 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 the regular edge in the plaster mortar layer are more obvious in the horizontal direction. Therefore, the horizontal laying method is adopted to ensure that the irregular wool edge of the fiber felt is in the horizontal overlapping part. The irregular wool edge is an irregular arrangement of fibers. For the wool-like overlapping parts on both sides of the length direction, the overlapping thickness can be reduced by the contact and engagement of the irregular wool edge. At the same time, the irregular wool edge located above will not produce obvious visual shadows in the putty and primer layer.

[0025] Comparative Example This comparative example adopts the overlapping laying of fiber felt for crack-resistant composite layer with regular edges. The production process is a traditional production process and will not be described in detail. The laying method of fiber felt for crack-resistant composite layer with regular edges includes the following steps: S1: Prepare the base surface, remove dust, dirt, oil stains and other debris from the base, and ensure that the wall surface is flat and clean; S2: Cut the fiber felt to the required length according to the size of the base surface. A certain margin should be left during cutting to facilitate edge processing. S3: Apply the adhesive, use a trowel or roller to evenly apply a layer of polymer mortar adhesive on the base surface; S4: Lay the fiber felt on the adhesive, use a scraper or roller to flatten the fiber felt from the middle to the sides to remove air and excess adhesive, and use direct overlap method to lay adjacent fiber felts.

[0026] S5: Edge processing: trimming the edges of the fiber felt that exceed the base surface size.

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

[0028] The paving effect diagram produced by the above paving method is as follows Figure 3 shown.

[0029] By comparison, it was found that Figure 3 The overlap of the fiber felt at the regular edge above reveals obvious regular seam marks, and the overlap of the fiber felt at the regular edge of the putty and primer layer will produce obvious overlap shadows. Figure 2 The two pieces of fiber felt overlapped at the edges of the wool are integrated into one without obvious overlapping marks, and no overlapping shadows will appear in the putty and primer layers, avoiding the use of excess putty to cover up the overlapping marks, making it more beautiful.

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

Claims

1. A fiber felt for a crack-resistant composite layer, characterized in that: The fiber felt is formed by irregularly arranged fiber filaments that are glued and flattened, and at least one edge on both sides in the length direction is in an irregular fluff shape.

2. The fiber felt for crack-resistant composite layer according to claim 1, characterized in that: The fiber filaments are one of polyester fiber, glass fiber or carbon fiber, the fiber filaments have a diameter of 3µm~10µm and a length of 5cm~10cm, the fiber felt has a width of 1m~2m and a length of 30m~50m, and the fiber felt is coiled.

3. The method for producing a fiber felt for a crack-resistant composite layer according to claim 1, wherein: The following steps are involved: S1: Raw material preparation, cutting the prepared fiber raw materials into fiber strands of 5 cm to 10 cm in length; S2: Dispersed into a web, the short-cut fiber strands fall freely from a higher place and disperse onto the horizontally moving conveyor belt below to form a fiber web; S3: bonding and curing, evenly laying the adhesive in the fiber web for bonding, using a hot press to compact the fiber web by heating and applying pressure so that the fiber filaments and the adhesive are bonded to each other to form a fiber mat, and sending the fiber mat to a dryer for drying and curing to form a finished product; S4: Rolling and packaging. The finished fiber felt is coiled and placed. The length of each roll of fiber felt is 30m~50m.

4. The method for producing a fiber felt for a crack-resistant composite layer according to claim 3, characterized in that: In step S2, the width of the conveyor belt is 1~2m, the width of the fiber web formed by the fiber filaments scattered on the conveyor belt is consistent with the width of the conveyor belt, and the edges are irregular fluffy. In step S4, the irregular fluff on at least one side of the edges of the rolled and packaged fiber felt product in the length direction is not cut.

5. The method for laying the fiber felt for the crack-resistant composite layer according to claims 1 to 4, characterized in that: The following steps are involved: S1: Base surface preparation, cleaning and leveling the base surface; S2: Cut the fiber felt to the required length according to the base surface size. A certain margin should be left during cutting to facilitate edge processing. S3: Apply adhesive, use a trowel or roller brush to evenly apply a thin layer of adhesive on the wall. Make sure the adhesive is evenly distributed when applying; S4: Lay the fiber mat. Lay the cut fiber mat flat on the base surface coated with adhesive. Ensure that the length direction of the fiber mat (the side with fluffy edge) is in the horizontal direction. When overlapping in the length direction, the fluffy side is always on the top. The overlapping width is consistent with the width of the fluffy edge. Use a scraper or roller to flatten the fiber mat from the middle to the surroundings to remove air and excess adhesive. Ensure that the fiber mat fits tightly to the wall without wrinkles. S5: Edge processing: trimming the edges of the fiber felt that exceed the base surface size.

6. The method for laying a fiber felt for a crack-resistant composite layer according to claim 5, characterized in that: In the step S3, the adhesive is one of polymer mortar and latex paint primer.

7. The method for laying a fiber felt for a crack-resistant composite layer according to claim 5, characterized in that: After step S5, a second step of applying adhesive may be added, in which a layer of adhesive is applied again on the surface of the fiber felt for the anti-cracking composite layer.

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