Soft-bottom polyurethane and polyolefin composite carpet and preparation method thereof
By designing a separation device in the composite carpet, the surface layer can be cleaned independently, which solves the problem of degradation in the performance of polyurethane foam and polyolefin glue caused by frequent cleaning of the surface layer of the carpet, extends the service life of the carpet and improves environmental protection.
Patent Information
- Application Number
- CN202311201171.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-09-18
- Publication Date
- 2025-03-18
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
When using composite carpets, the surface layer of the carpet is often trampled and needs frequent cleaning. The chemical composition of the detergent during the cleaning process may damage the polyurethane foam and polyolefin glue, resulting in reduced performance and cracking of the carpet, reducing service life.
A soft-bottom polyurethane and polyolefin composite carpet was designed, and a separation device was used to connect the polyolefin glue layer to the separation layer through the polyurethane foam layer. The surface layer can be removed and cleaned independently to avoid damage to the carpet by detergent.
By independently cleaning the surface layer, the detergent damage to the composite carpet is avoided, the service life of the carpet is extended, and the environmental protection of the carpet is improved.
Smart Images

Figure CN119636202A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of composite base carpets, in particular to a soft base polyurethane and polyolefin composite carpet and a preparation method thereof. Background Art
[0002] Carpets are floor coverings made of natural fibers such as cotton, linen, wool, silk, and grass yarn, or chemical synthetic fibers, which are knitted, planted, or woven by hand or mechanical processes. Polyurethane foam has excellent elastic recovery. Adding polyurethane foam products to the back of the carpet can play a role in heat insulation, sound absorption, and noise reduction, thereby improving the comfort of use. At the same time, polyurethane foam has a low density and high strength. By selecting high-quality raw materials, the odor, atomization value, and VOC of the foam can be greatly reduced, thereby improving the environmental friendliness of the carpet.
[0003] The inventors have discovered that in the process of using composite carpets, the surface of the carpets is often stepped on, so users need to frequently clean the surface of the carpets. However, the chemical components contained in the detergents used in the cleaning process may damage the chemical structure of the polyurethane foam in the composite carpets, resulting in a decrease in the performance of the polyurethane foams. In addition, the detergents may reduce the viscosity of the polyolefin glue, causing the carpets to crack and reducing the service life of the carpets. Summary of the invention
[0004] The present invention proposes a soft-bottomed polyurethane and polyolefin composite carpet and a preparation method thereof to solve the problem that the surface layer of the composite carpet is often stepped on and the user needs to frequently clean the surface layer of the carpet, but the chemical components contained in the detergent used in the cleaning process may damage the chemical structure of the polyurethane foam in the composite carpet, resulting in a decrease in the performance of the polyurethane foam, and the detergent may cause the viscosity of the polyolefin glue to decrease, resulting in the carpet cracking and reducing the service life of the carpet.
[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a soft-bottom polyurethane and polyolefin composite carpet, comprising a bottom layer, a polyurethane foam layer is arranged on the top of the outer surface of the bottom layer, a separation device is arranged on the top of the outer surface of the polyurethane foam layer, the separation device comprises a separation layer, the separation layer and the polyurethane foam layer are connected by a polyolefin adhesive layer, a surface layer is arranged on the top of the outer surface of the separation layer, two first groove blocks are arranged on the left and right sides of the interior of the separation layer, a rectangular groove is opened inside the first groove block, an L-shaped block is slidably connected to the inner wall of the rectangular groove, a second groove block is fixedly connected to the top of the outer surface of the L-shaped block, and two slots are arranged on the left and right sides of the interior of the surface layer.
[0006] Preferably, two positioning grooves are provided on the left and right sides of the inner wall of the slot, a rectangular block is fixedly connected to the bottom end of the outer surface of the L-shaped block, the outer surface of the rectangular block slides on the inner wall of the rectangular groove, two springs are arranged inside the rectangular groove, the front and rear ends of the outer surfaces of the two springs are respectively fixedly connected to one end on the left and right sides of the outer surface of the rectangular block and one end on the left and right sides of the inner wall of the rectangular groove, the inner wall of the second slot block is threadedly connected with a bolt, one end of the outer surface of the bolt is fixedly connected with a push block, two sliding grooves are provided inside the slot block, the inner walls of the two sliding grooves are respectively slidably connected with sliders, and the two sliders are magnetic blocks with certain magnetism.
[0007] Preferably, the outer surfaces of the two sliding blocks are arc-shaped at their edges on one side close to each other, and the outer surface of the push block is spherical.
[0008] Preferably, the length of the two sliders is greater than the length of the slide groove, and the width of one end of the outer surfaces of the two sliders close to each other is greater than the width of the slide groove.
[0009] Preferably, two cylindrical rods are fixedly connected to the left and right sides of the inner wall of the rectangular groove, and the left and right sides of the inner wall of the rectangular block slide on the outer surfaces of the two cylindrical rods respectively.
[0010] Preferably, an elastic rope is provided at one end of the outer surface of the L-shaped block away from the rectangular block, and two ends of the elastic rope are respectively fixedly connected to the left and right sides of the outer surface of the L-shaped block.
[0011] Preferably, a plurality of hooks are fixedly connected to the outer surface of the bottom layer, and the hooks are located on one side of the outer surface of the bottom layer and close to the bottom of the L-shaped block.
[0012] Preferably, the outer surface of the separation layer is provided with an auxiliary device, and the auxiliary device includes a plurality of first cloth pieces and second cloth pieces, one side of the outer surface of the first cloth piece is fixedly connected to the top end of the outer surface of the separation layer, the first cloth piece is located at the four corners of the top end of the outer surface of the separation layer, the outer surface of the first cloth piece is provided with a Velcro fleece surface, one side of the outer surface of the second cloth piece is fixedly connected to the bottom end of the outer surface of the surface layer, the second cloth piece is located at the four corners of the bottom end of the outer surface of the surface layer, and the outer surface of the second cloth piece is provided with a Velcro hook surface.
[0013] Preferably, reinforcement devices are provided on the left and right sides of the outer surface of the first slot block, and the reinforcement devices include a cloth strip, and the left and right ends of the outer surface of the cloth strip are respectively fixedly connected to one side of the outer surface of the first slot block and one side of the outer surface of the separation layer, and the outer surface of the cloth strip is provided with a plurality of sewing strips, and the sewing strips are linearly distributed on one side of the outer surface of the cloth strip, and a sewing edge is provided at one end of the outer surface of the cloth strip away from the first slot block.
[0014] Preferably, a method for preparing a soft-bottom polyurethane and polyolefin composite carpet is also included, comprising the following steps:
[0015] S1, melt the thermoplastic polyolefin particles in the extruder and extrude them into the extruder head, adjust the gap between the three rollers of the roller coater to adjust the thickness of the adhesive layer; introduce the blank blanket coated with EVA blanket latex into the calendering roller, and coat a layer of polyolefin adhesive on the back of the blanket;
[0016] S2, introducing glass fiber cloth into the blank blanket, and after cooling, coating a layer of polyolefin glue under the glass fiber cloth by roller coating, and introducing soot non-woven fabric with polyurethane foam layer at the same time, and finally cooling to complete the compounding;
[0017] S3. Apply a layer of polyolefin glue on the surface of the polyurethane foam layer, then introduce the soot non-woven fabric with the polyurethane foam layer as a separation layer, and finally cool it to complete the compounding.
[0018] In summary, the beneficial effects of the present invention are:
[0019] By setting a separation device, connecting the polyurethane foam layer and the separation layer through a polyolefin adhesive layer, inserting the second slot block into the slot and inserting the two sliders into the positioning slot to connect the surface layer and the separation layer, the surface layer can be removed and cleaned separately when the surface layer needs to be cleaned, thereby preventing the chemical components contained in the detergent used in the cleaning process from damaging the chemical structure of the polyurethane foam in the composite carpet, resulting in a decrease in the performance of the polyurethane foam and a reduction in the service life of the carpet. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 It is a three-dimensional schematic diagram of the present invention;
[0021] Figure 2 It is a schematic diagram of the three-dimensional structure of the surface layer of the present invention;
[0022] Figure 3 Schematic diagram of the three-dimensional structure of the separation layer of the present invention;
[0023] Figure 4 is a schematic diagram of the three-dimensional structure of the second cloth piece of the present invention;
[0024] Figure 5 It is a schematic diagram of a partial cross-sectional three-dimensional structure of the separation layer of the present invention;
[0025] Figure 6 The present invention Figure 5 A local enlarged three-dimensional structure schematic diagram;
[0026] Figure 7 is a schematic diagram of the three-dimensional structure of the first slot block of the present invention;
[0027] Figure 8It is a partial cross-sectional three-dimensional structural schematic diagram of the first slot block of the present invention;
[0028] Fig. 9 It is a schematic diagram of the three-dimensional structure of the rectangular block of the present invention;
[0029] Fig.10 It is a three-dimensional structural schematic diagram of the L-shaped block of the present invention.
[0030] Description of reference numerals:
[0031] 1. Bottom layer; 2. Separation device; 3. Auxiliary device; 4. Reinforcement device; 5. Polyurethane foam layer; 6. Polyolefin adhesive layer; 7. Surface layer; 21. Separation layer; 22. First slot block; 23. Rectangular slot; 24. L-shaped block; 25. Rectangular block; 26. Spring; 27. Second slot block; 28. Bolt; 29. Slider; 210. Slide; 211. Elastic rope; 212. Cylindrical rod; 213. Hook; 214. Slot; 215. Positioning slot; 216. Push block; 31. First cloth piece; 32. Velcro fleece surface; 33. Second cloth piece; 34. Velcro hook surface; 41. Cloth strip; 42. Sewing edge; 43. Sewing strip. DETAILED DESCRIPTION
[0032] Reference Figure 1-10 As shown, this embodiment discloses a soft-bottom polyurethane and polyolefin composite carpet, including a bottom layer 1, a polyurethane foam layer 5 is arranged on the top of the outer surface of the bottom layer 1, a separation device 2 is arranged on the top of the outer surface of the polyurethane foam layer 5, the separation device 2 includes a separation layer 21, the separation layer 21 and the polyurethane foam layer 5 are connected by a polyolefin adhesive layer 6, a surface layer 7 is arranged on the top of the outer surface of the separation layer 21, two first groove blocks 22 are arranged on the left and right sides of the interior of the separation layer 21, a rectangular groove 23 is opened inside the first groove block 22, an L-shaped block 24 is slidably connected to the inner wall of the rectangular groove 23, a second groove block 27 is fixedly connected to the top of the outer surface of the L-shaped block 24, and two slots 214 are arranged on the left and right sides of the interior of the surface layer 7.
[0033] Reference Figure 1-10As shown, the present embodiment discloses that two positioning grooves 215 are provided on the left and right sides of the inner wall of the slot 214, the bottom end of the outer surface of the L-shaped block 24 is fixedly connected with a rectangular block 25, the outer surface of the rectangular block 25 slides on the inner wall of the rectangular slot 23, and two springs 26 are arranged inside the rectangular slot 23, and the front and rear ends of the outer surfaces of the two springs 26 are respectively fixedly connected with one end on the left and right sides of the outer surface of the rectangular block 25 and one end on the left and right sides of the inner wall of the rectangular slot 23, and the inner wall of the second slot block 27 is threadedly connected with a bolt 28, and one end of the outer surface of the bolt 28 is fixedly connected with The push block 216 has two slide grooves 210 formed inside the groove block. The inner walls of the two slide grooves 210 are respectively connected with sliders 29 in a sliding manner. The two sliders 29 are magnetic blocks with a certain magnetism. The polyurethane foam layer 5 is connected to the separation layer 21 through the polyolefin adhesive layer 6, and the surface layer 7 is placed on the top of the outer surface of the separation layer 21. The two L-shaped blocks 24 are pulled on the left and right sides of the outer surface of the separation layer 21 to control the L-shaped block 24 and the rectangular block 25 to slide on the inner wall of the rectangular groove 23 in a direction away from the separation layer 21 and compress the spring 26, so that the surface layer 7 The bottom of the outer surface is fitted with the top of the outer surface of the separation layer 21, and then the L-shaped block 24 is loosened, the spring 26 will return to its original shape and push the rectangular block 25 to move in the direction close to the separation layer 21 on the inner wall of the rectangular groove 23 so that the second groove block 27 is inserted into the inside of the slot 214, and then the bolt 28 on one side of the outer surface of the second groove block 27 is rotated to move the bolt 28 in the direction close to the slider 29. When the push block 216 at one end of the outer surface of the bolt 28 continues to move, the two magnetically attracted sliders 29 are pushed apart and the ends of the two sliders 29 away from the push block 216 are inserted into The interior of the positioning groove 215 fixes the relative position of the surface layer 7 and the separation layer 21. When the surface layer 7 needs to be cleaned, first turn the bolt 28 to move the push block 216 away from the slider 29. At the same time, the two sliders 29 will be separated from the interior of the positioning groove 215 due to magnetic attraction. Then pull the L-shaped block 24 to control the rectangular block 25 and the second groove block 27 to move away from the separation layer 21. Pull the second groove block 27 out of the slot 214 to release the connection between the separation layer 21 and the surface layer 7, and then remove the surface layer 7 for cleaning separately.
[0034] Reference Figure 1-10As shown, this embodiment discloses that the outer surfaces of the two sliders 29 are arc-shaped at the edges on one side close to each other, and the outer surface shape of the push block 216 is spherical. By setting the outer surface shape of the push block 216 to be spherical and the outer surfaces of the two sliders 29 to be arc-shaped at the edges on one side close to each other, it is easier for the push block 216 to push the two sliders 29 to separate. The length of the two sliders 29 is greater than the length of the slide groove 210, and the width of one end of the outer surfaces of the two sliders 29 close to each other is greater than the width of the slide groove 210. By setting the width of one end of the outer surfaces of the two sliders 29 close to each other to be greater than the width of the slide groove 210, the moving range of the two sliders 29 can be limited, and the two sliders 29 can be prevented from being far apart and unable to be magnetically attracted to each other as much as possible.
[0035] Reference Figure 1-10 As shown, this embodiment discloses that two cylindrical rods 212 are fixedly connected to the left and right sides of the inner wall of the rectangular groove 23, and the left and right sides of the inner wall of the rectangular block 25 slide on the outer surfaces of the two cylindrical rods 212 respectively. When the rectangular block 25 slides on the inner wall of the rectangular groove 23, it will slide on the outer surface of the cylindrical rod 212. The angle between the rectangular block 25 and the first groove block 22 can be fixed by the cylindrical rod 212 to increase the stability of the rectangular block 25 when moving and avoid the angle of the rectangular block 25 from being deflected as much as possible.
[0036] Reference Figure 1-10 As shown, this embodiment discloses that an elastic rope 211 is provided at one end of the outer surface of the L-shaped block 24 away from the rectangular block 25, and the two ends of the elastic rope 211 are respectively fixedly connected to the left and right sides of the outer surface of the L-shaped block 24. Pulling the elastic rope 211 can more conveniently pull the L-shaped block 24 to slide on the inner wall of the rectangular groove 23. The outer surface of the bottom layer 1 is fixedly connected with a plurality of hooks 213. The hooks 213 are located on one side of the outer surface of the bottom layer 1, close to the bottom of the L-shaped block 24. When the composite carpet is used, the elastic rope 211 can be hung on the hooks 213 for fixing.
[0037] Reference Figure 1-4 As shown, this embodiment discloses that the outer surface of the separation layer 21 is provided with an auxiliary device 3, and the auxiliary device 3 includes a plurality of first cloth pieces 31 and second cloth pieces 33, one side of the outer surface of the first cloth piece 31 is fixedly connected to the top end of the outer surface of the separation layer 21, the first cloth piece 31 is located at the four corners of the top end of the outer surface of the separation layer 21, and the outer surface of the first cloth piece 31 is provided with a Velcro fleece surface 32, one side of the outer surface of the second cloth piece 33 is fixedly connected to the bottom end of the outer surface of the surface layer 7, the second cloth piece 33 is located at the four corners of the bottom end of the outer surface of the surface layer 7, and the outer surface of the second cloth piece 33 is provided with a Velcro hook surface 34. When connecting the surface layer 7 to the separation layer 21, the Velcro hook surface 34 at the bottom end of the outer surface of the surface layer 7 can be aligned with the Velcro fleece surface 32 at the top end of the outer surface of the separation layer 21 and bonded to preliminarily fix the position of the separation layer 21 and the surface layer 7.
[0038] Reference Figure 1-8 As shown, the present embodiment discloses that the left and right sides of the outer surface of the first slot block 22 are provided with a reinforcement device 4, the reinforcement device 4 includes a cloth strip 41, the left and right ends of the outer surface of the cloth strip 41 are respectively fixedly connected to one side of the outer surface of the first slot block 22 and one side of the outer surface of the separation layer 21, a plurality of sewing strips 43 are provided on the outer surface of the cloth strip 41, the sewing strips 43 are linearly distributed on one side of the outer surface of the cloth strip 41, and a sewing edge 42 is provided on the end of the outer surface of the cloth strip 41 away from the first slot block 22, and the connection between the first slot block 22 and the separation layer 21 can be reinforced by arranging the sewing strips 43, the sewing edge 42 and the cloth strip 41.
[0039] The working principle is as follows: when using the composite carpet, first place the surface layer 7 on the top of the outer surface of the separation layer 21 so that the Velcro hook surface 34 at the bottom of the outer surface of the surface layer 7 is aligned with the Velcro fur surface 32 at the top of the outer surface of the separation layer 21 and adhered to preliminarily fix the position of the separation layer 21 and the surface layer 7, and then pull the elastic ropes 211 on the outer surfaces of the two L-shaped blocks 24 on the left and right sides of the outer surface of the separation layer 21 respectively to control the L-shaped block 24 and the rectangular block 25 to slide on the inner wall of the rectangular groove 23 away from the separation layer 21 and compress the spring 26, so that the bottom end of the outer surface of the surface layer 7 is fitted with the top of the outer surface of the separation layer 21, and then release the L-shaped block 24. The spring 26 will return to its original state and push the rectangular block 25 to move on the inner wall of the rectangular groove 23 toward the separation layer 21 so that the second slot block 27 is inserted into the inside of the slot 214, and then the second slot block 27 is rotated. The bolt 28 on one side of the outer surface causes the bolt 28 to move in the direction close to the slider 29. When the push block 216 at one end of the outer surface of the bolt 28 continues to move, the two magnetically attracted sliders 29 will be pushed apart and the ends of the two sliders 29 away from the push block 216 will be inserted into the interior of the positioning groove 215 to fix the relative positions of the surface layer 7 and the separation layer 21. When the surface layer 7 needs to be cleaned, the bolt 28 can be first rotated to move the push block 216 in the direction away from the slider 29. At the same time, the two sliders 29 will be separated from the interior of the positioning groove 215 due to magnetic attraction. Then the elastic rope 211 is pulled to control the L-shaped block 24 to control the rectangular block 25 and the second slot block 27 to move in the direction away from the separation layer 21. The second slot block 27 can be pulled out from the interior of the slot 214 to release the connection between the separation layer 21 and the surface layer 7, and the surface layer 7 can be removed separately for cleaning.
[0040] The above is only the preferred embodiment of the present application, and is not intended to limit the present application in other forms. Any technician familiar with the profession may use the above disclosed technical content to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present application without departing from the technical solution of the present application still belongs to the protection scope of the technical solution of the present application. In the description of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present application can be understood by specific circumstances.
Claims
1. A soft-bottom polyurethane and polyolefin composite carpet, comprising a bottom surface layer (1), characterized in that: A polyurethane foam layer (5) is arranged at the top of the outer surface of the bottom layer (1), and a separation device (2) is arranged at the top of the outer surface of the polyurethane foam layer (5). The separation device (2) comprises a separation layer (21), and the separation layer (21) is connected to the polyurethane foam layer (5) via a polyolefin adhesive layer (6). A surface layer (7) is arranged at the top of the outer surface of the separation layer (21). Two first slot blocks (22) are arranged on the left and right sides of the interior of the separation layer (21), and a rectangular slot (23) is provided inside the first slot block (22). An L-shaped block (24) is slidably connected to the inner wall of the rectangular slot (23), and a second slot block (27) is fixedly connected to the top of the outer surface of the L-shaped block (24). Two slots (214) are arranged on the left and right sides of the interior of the surface layer (7).
2. A soft-bottom polyurethane and polyolefin composite carpet according to claim 1, characterized in that: Two positioning grooves (215) are provided on the left and right sides of the inner wall of the slot (214); a rectangular block (25) is fixedly connected to the bottom end of the outer surface of the L-shaped block (24); the outer surface of the rectangular block (25) slides on the inner wall of the rectangular slot (23); two springs (26) are arranged inside the rectangular slot (23); the front and rear ends of the outer surfaces of the two springs (26) are respectively fixedly connected to one end on the left and right sides of the outer surface of the rectangular block (25) and one end on the left and right sides of the inner wall of the rectangular slot (23); the inner wall of the second slot block (27) is threadedly connected with a bolt (28); one end of the outer surface of the bolt (28) is fixedly connected with a push block (216); two sliding grooves (210) are provided inside the slot block; the inner walls of the two sliding grooves (210) are respectively slidably connected with sliders (29); the two sliders (29) are magnetic blocks with certain magnetism.
3. The soft-bottom polyurethane and polyolefin composite carpet according to claim 2, characterized in that: The outer surfaces of the two sliding blocks (29) are arc-shaped at their edges on one side where they are close to each other, and the outer surface of the push block (216) is spherical.
4. The soft-bottom polyurethane and polyolefin composite carpet according to claim 2, characterized in that: The length of the two sliders (29) is greater than the length of the slide groove (210), and the width of one end of the outer surfaces of the two sliders (29) that are close to each other is greater than the width of the slide groove (210).
5. The soft-bottom polyurethane and polyolefin composite carpet according to claim 2, characterized in that: Two cylindrical rods (212) are fixedly connected to the left and right sides of the inner wall of the rectangular groove (23), and the left and right sides of the inner wall of the rectangular block (25) slide on the outer surfaces of the two cylindrical rods (212) respectively.
6. The soft-bottom polyurethane and polyolefin composite carpet according to claim 2, characterized in that: An elastic rope (211) is provided at one end of the outer surface of the L-shaped block (24) away from the rectangular block (25), and two ends of the elastic rope (211) are respectively fixedly connected to the left and right sides of the outer surface of the L-shaped block (24).
7. The soft-bottom polyurethane and polyolefin composite carpet according to claim 6, characterized in that: A plurality of hooks (213) are fixedly connected to the outer surface of the bottom layer (1), and the hooks (213) are located on one side of the outer surface of the bottom layer (1) and below the L-shaped block (24).
8. The soft-bottom polyurethane and polyolefin composite carpet according to claim 1, characterized in that: The outer surface of the separation layer (21) is provided with an auxiliary device (3), and the auxiliary device (3) comprises a plurality of first cloth pieces (31) and second cloth pieces (33); one side of the outer surface of the first cloth piece (31) is fixedly connected to the top of the outer surface of the separation layer (21); the first cloth piece (31) is located at the four corners of the top of the outer surface of the separation layer (21); the outer surface of the first cloth piece (31) is provided with a Velcro fleece surface (32); one side of the outer surface of the second cloth piece (33) is fixedly connected to the bottom of the outer surface of the surface layer (7); the second cloth piece (33) is located at the four corners of the bottom of the outer surface of the surface layer (7); and the outer surface of the second cloth piece (33) is provided with a Velcro hook surface (34).
9. The soft-bottom polyurethane and polyolefin composite carpet according to claim 1, characterized in that: Reinforcing devices (4) are provided on the left and right sides of the outer surface of the first slot block (22), and the reinforcing devices (4) include a cloth strip (41), and the left and right ends of the outer surface of the cloth strip (41) are respectively fixedly connected to one side of the outer surface of the first slot block (22) and one side of the outer surface of the separation layer (21), and the outer surface of the cloth strip (41) is provided with a plurality of sewing strips (43), and the sewing strips (43) are linearly distributed on one side of the outer surface of the cloth strip (41), and a sewing edge (42) is provided on one end of the outer surface of the cloth strip (41) away from the first slot block (22).
10. A preparation method, characterized in that: The method for preparing the soft-bottomed polyurethane and polyolefin composite carpet according to any one of claims 1 to 9 comprises the following steps: S1, melt the thermoplastic polyolefin particles in the extruder and extrude them into the extruder head, adjust the gap between the three rollers of the roller coater to adjust the thickness of the adhesive layer; introduce the blank blanket coated with EVA blanket latex into the calendering roller, and coat a layer of polyolefin adhesive on the back of the blanket; S2, introducing glass fiber cloth into the blank blanket, and after cooling, coating a layer of polyolefin glue under the glass fiber cloth by roller coating, and introducing soot non-woven fabric with polyurethane foam layer at the same time, and finally cooling to complete the compounding; S3, coating a layer of polyolefin glue on the surface of the polyurethane foam layer (5), then introducing the soot non-woven fabric with the polyurethane foam layer as a separation layer (21), and finally cooling to complete the compounding.