Hot melt adhesive net film spliced carpet and bottom covering process and equipment

Abstract

The invention discloses a hot melt adhesive net film block carpet and a bottom covering process and equipment. The hot melt adhesive net film block carpet is characterized in that a tufted blank carpet, a hot melt adhesive net film and a non-woven fabric are stacked and then are subjected to hot melting compounding; or the tufting blank blanket, the hot melt adhesive net film, the gridding cloth or the glass fiber cloth, the hot melt adhesive net film and the non-woven fabric are stacked and then are subjected to hot melting compounding, all layers of materials are compacted without gaps and are flat in surface by extruding the roller shafts, the materials enter a drying room at the temperature of 80-120 DEG C to be heated, the hot melt adhesive net film is molten in the drying room, and the tufting blank blanket, the hot melt adhesive net film, the gridding cloth or the glass fiber cloth and the non-woven fabric are subjected to two to three times of extrusion on the roller shafts. And gradually cooling the compounded wide strip-shaped carpet at the rear section of the drying room to 60-50 DEG C at the outlet of the drying room, taking the carpet out of the drying room and cooling the carpet by a cold water group roller, enabling each bonding layer to be firm and flat, forming the wide strip-shaped hot melt adhesive net film carpet, and cutting the carpet into the hot melt adhesive net film block carpet in a block cutting machine, wherein the hot melt adhesive net film and the adjacent material are mutually bonded together, and the compounded wide strip-shaped carpet is cooled at the rear section of the drying room to reach 60-50 DEG C at the outlet of the drying room and is cooled by the cold water group roller. The production process of the spliced carpet is simplified, and the production cost is saved.

Description

Technical Field

[0001] The invention relates to the field of patchwork carpets, in particular to a hot melt adhesive mesh patchwork carpet and a bottom covering process and equipment. Background Art

[0002] The patchwork carpet has many advantages: it is easy to transport, store, carry, lay and replace; the patchwork carpet is also wear-resistant, quiet, anti-fouling, anti-skid and health-care; the pattern can be assembled arbitrarily, and the laying pattern effect can be changed at will. It is widely used in office buildings, offices, reception rooms, airports and computer rooms. The structure of the patchwork carpet consists of an upper surface carpet and a backing made of different materials attached to the back of the carpet. The carpet surface and the backing are bonded together by different bonding systems. The carpet surface is made of a tufted blank carpet made of a base cloth through a tufting machine, and then a layer of pre-coated glue (the main component of the pre-coated glue is EVA latex) is applied on the back of the tufted blank carpet to prevent the tuft from falling off and increase the pull-out force of the pile. Because AI (OH) 3 aluminum hydroxide and PVA polyvinyl alcohol are added to the pre-coated glue, the carpet can also effectively play a flame retardant and antistatic role. After that, the pre-coated blank carpet is transported to a special drying room for drying in a closed environment at 155°C (referred to as the pre-coating production line) to obtain a pre-coated blanket surface. The PVC carpet with the largest consumption in the market has a mesh cloth or glass fiber cloth placed between two layers of PVC material. After being compounded with a pressure roller and a pre-coated blanket, it is plasticized in a drying room at about 145°C (referred to as the PVC production line). After leaving the drying room, the carpet is cooled into a wide strip carpet, and cut into block carpets according to customer requirements, namely PVC patchwork carpets. In the past year or so, there has been a trend of de-PVCing internationally. However, the domestic PVC carpet market is still in the ascendant. There are also hot-melt asphalt added with CaCO3 calcium carbonate, stirred into a bonding material, and bonded with tufted blankets and other material backings, and then compounded, cooled, solidified and cut to form patchwork carpets. There are also thermoplastic resins melted and added with CaCO3 calcium carbonate, stirred into a bonding material, and compounded, cooled, solidified and cut with tufted blankets and other backings to form patchwork carpets. The above-mentioned patchwork carpets made of different adhesives generally have complex processes and long routes. Natural gas and electricity are consumed to melt and stir the adhesive materials. During the production process, high-temperature drying rooms at around 150°C are required for plasticization and multiple cooling in the later stage. The entire production equipment is complex and expensive. The carpets produced have heavy weight per unit area, which brings great difficulties to transportation, handling and laying. Some adhesive materials also have potential harmful gases. Summary of the invention

[0003] The purpose of the present invention is to provide a hot melt adhesive mesh patchwork carpet and a bottom covering process and equipment which are light in weight, safe in use, simple in manufacturing process and low in energy consumption.

[0004] In order to achieve the above requirements, the hot melt adhesive mesh patchwork carpet of the present invention is characterized in that its structure is composed of three layers of materials, namely, tufted blanket, hot melt adhesive mesh, and non-woven fabric, which are stacked and hot-melt composited from top to bottom, or five layers of materials, namely, tufted blanket, hot melt adhesive mesh, mesh cloth or glass fiber cloth, hot melt adhesive mesh, and non-woven fabric, which are stacked and hot-melt composited.

[0005] The backing process of hot melt adhesive mesh patchwork carpet is characterized in that tufted blank carpet, hot melt adhesive mesh, non-woven fabric are stacked, or tufted blank carpet, hot melt adhesive mesh, mesh cloth or glass fiber cloth, hot melt adhesive mesh, non-woven fabric are stacked, and each layer of material is pressed against each other without gaps and the surface is flat by extrusion on roller shafts, and then enters into a drying room at 80℃ to 120℃ for heating, so that the hot melt adhesive mesh is melted in the drying room, and after two to three times of extrusion on roller shafts, the hot melt adhesive mesh and adjacent materials are bonded together, and the composite wide strip carpet is gradually cooled in the back section of the drying room, and the temperature is 60℃ to 50℃ at the exit of the drying room, and then cooled by cold water rollers when it leaves the drying room, so that each bonding layer is firm and flat, and a wide strip of hot melt adhesive mesh carpet is formed, and then it enters into a block cutting machine for cutting into hot melt adhesive mesh patchwork carpet.

[0006] The hot melt adhesive mesh patchwork carpet bottom covering processing line is divided into three-layer material or five-layer material bottom covering processing, and its characteristics are:

[0007] Three-layer material bottom covering processing line for hot-melt adhesive mesh patchwork carpet: from the rear end of the bottom covering processing line, a tufted blank carpet unwinding device and a blank carpet storage J-type box are arranged in sequence forward. At least two correcting unwinding devices are arranged in front of the blank carpet storage J-type box. The specific number of correcting unwinding devices and the names and front-to-back order of the unwinding materials installed on the correcting unwinding devices are determined according to the synthesized three-layer material structure of tufted blank carpet, hot-melt adhesive mesh and non-woven fabric from top to bottom. The tufted blank carpet and other unwinding materials successively enter the photoelectric centering and compounding device. After the three-layer materials are rolled by the photoelectric centering and compounding device, the three-layer materials are smoother and more closely fitted to each other. From top to bottom, the three-layer material structure of tufted blank carpet, hot-melt adhesive mesh and non-woven fabric is arranged, and they enter the tunnel drying room and the front of the tunnel drying room together with the movement of the carpet belt. The first section is a heating and compounding section. A heating device is provided in the heating and compounding section to heat the material at a temperature of 80°C to 120°C. The hot melt adhesive web in the three layers of material is melted in the heating and compounding section. The three layers of material are extruded and compounded by two to three extrusion rollers in turn in the heating and compounding section. The melted hot melt adhesive web is firmly bonded to the tufted blanket and non-woven fabric of the adjacent material layers to form a wide strip carpet. The strip carpet moves to the rear section of the tunnel-type drying room, in which a cold water plate is provided. The strip carpet with a relatively high temperature moves on the surface of the cold water plate and is cooled accordingly. The hot melt adhesive web material is bonded and solidified to the adjacent layer of material. The strip carpet moves out of the tunnel-type drying room and is separated from the carpet belt. It successively enters the carpet cold water group roller for further cooling. It then passes through the carpet storage rack, the deviation correction device, the block cutter, and the inspection table to become a qualified hot melt adhesive web patchwork carpet.

[0008] Five-layer material bottom covering processing line for hot-melt adhesive mesh patchwork carpet: from the rear end of the bottom covering processing line, there are tufted blank carpet unwinding device and blank carpet storage J-type box in sequence. In front of the blank carpet storage J-type box, there are at least 4 deviation correction unwinding devices. The specific number of deviation correction unwinding devices and the names and order of the unwinding materials installed on the deviation correction unwinding devices are determined according to the five-layer material structure of tufted blank carpet, hot-melt adhesive mesh, mesh cloth or glass fiber cloth, hot-melt adhesive mesh, and non-woven fabric from top to bottom. The tufted blank carpet and other unwinding materials successively enter the photoelectric centering and compounding device. After the five-layer material is rolled by the photoelectric centering and compounding device, the five-layer material becomes smoother and fits better to each other. From top to bottom, it is a five-layer material structure of tufted blank carpet, hot-melt adhesive mesh, mesh cloth or glass fiber cloth, hot-melt adhesive mesh, and non-woven fabric, and enters the tunnel together with the movement of the carpet belt. The front section of the drying room is a heating and compounding section, in which a heating device is provided for heating at a temperature of 80°C to 120°C. In the heating and compounding section, the hot melt adhesive webs in the five layers of materials are melted, and the five layers of materials are extruded and compounded by two to three extrusion rollers in turn in the heating and compounding section. The melted hot melt adhesive webs are firmly bonded to the tufted blanket, mesh cloth or glass fiber cloth, and non-woven fabric of the adjacent material layers to form a wide strip carpet. The strip carpet moves to the rear section of the tunnel drying room, in which a cold water plate is provided. The strip carpet with relatively high heat moves on the surface of the cold water plate and is cooled accordingly. The hot melt adhesive web material is bonded and solidified to the adjacent layer of materials. The strip carpet moves out of the tunnel drying room and is separated from the carpet belt, and successively enters the carpet cold water group roller for further cooling, and then passes through the carpet storage rack, the deviation correction device, the block cutter, and the inspection table to become a qualified hot melt adhesive web patchwork carpet.

[0009] The total length of the tunnel type drying room is 30 meters to 40 meters, wherein the length of the heating compound section accounts for 85% of the total length.

[0010] The moving speed of the blanket belt is 8 m / min-10 m / min.

[0011] The tunnel type drying room is formed by connecting single drying rooms in series.

[0012] The tufted blank carpet is coated with pre-coating fluid glue on the back of the tufted blank carpet through a pre-coating device before being covered with other materials.

[0013] The pre-coating device comprises a glue storage tank, in which an active pattern roller with grooves or pits on the surface is arranged, and a front guide roller and a rear squeezing roller are arranged in front and behind the active pattern roller respectively, and the back of the introduced tufted blank blanket is wrapped on the upper arc surface of the active pattern roller. When the glue storage tank is filled with pre-coated fluid glue, as the active pattern roller rotates, the pre-coated fluid glue in the glue storage tank is brought up and coated on the back of the tufted blank blanket, and then squeezed by the rear squeezing roller, the pre-coated fluid glue is forced to be squeezed to the root of the tuft of the tufted blank blanket, so that the tufts on the blank blanket are firmly bonded to the non-woven fabric at the root.

[0014] The advantages of a hot melt adhesive mesh carpet tile and bottom covering process and equipment designed according to the above scheme are as follows:

[0015] 1. The hot melt adhesive mesh used is an existing material, which is made of hot melt plastic particles melted and then scraped and coated by professional equipment or melt-blown equipment to form a mesh. The hot melt adhesive mesh currently used has a melting point of 80°C to 100°C and a coiled product thickness of 0.8-1.8 mm. The hot melt adhesive mesh replaces traditional adhesive materials such as paste PVC materials, EVA fluid adhesive, asphalt or thermoplastic resin adhesive, which reduces the consumption of natural gas and electricity energy, as well as the mixing, conveying and gluing devices required for the preparation of adhesive materials, and greatly simplifies the bottom coating process and equipment;

[0016] 2. Since the melting point of the hot melt adhesive web is only 80℃ to 100℃, during the compounding process, 120℃ can be used in the tunnel drying room, which further reduces energy consumption. The total energy consumption is only 70% of the traditional process (including energy consumption in the early stage of adhesive material production), which can significantly improve the working environment of workers, especially in summer.

[0017] 3. The specific gravity of the hot melt adhesive mesh used is small, 45g / m2 to 120g / m2. The weight of the hot melt adhesive mesh patchwork carpet is about 60% of the PVC patchwork carpet and about 70% of the asphalt patchwork carpet. It is significantly lighter than the traditional patchwork carpet, which is convenient for transportation, handling and installation.

[0018] 4. The bottom covering equipment used can be the same as the bottom covering combined machine of the original PVC patchwork carpet and PET patchwork carpet. It only needs to add and modify the unwinding device to the original bottom covering combined machine. For the manufacture of three-layer hot melt adhesive mesh patchwork carpet, there is no need to add an unwinding device. By adding two to three squeezing rollers in the tunnel drying room, the purpose of one machine with multiple uses can be achieved.

[0019] This invention has increased product varieties for enterprises, simplified the production process of patchwork carpets, and achieved good results in improving product quality and saving costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1This is an enlarged cross-section of a three-layer hot-melt adhesive mesh patchwork carpet;

[0021] Figure 2 This is an enlarged cross-section of a five-layer hot-melt adhesive mesh patchwork carpet;

[0022] Figure 3 Schematic diagram of the structure of the five-layer material covering processing line of the hot melt adhesive mesh patchwork carpet;

[0023] Figure 4 yes Figure 3 A partial enlarged view of the middle A area;

[0024] Figure 5 yes Figure 3 A partial enlarged view of the middle B area;

[0025] Figure 6 yes Figure 3 A partial enlarged view of the middle C area;

[0026] Figure 7 It is a schematic diagram of the structure of the pre-coating device;

[0027] Figure 8 yes Figure 4 Schematic diagram of the structure of the three-layer material bottom coating processing line.

[0028] In the figure: 1. Tufted blanket; 2. Hot melt adhesive film; 3. Non-woven fabric; 4. Mesh cloth or glass fiber cloth; 6. Tufted blanket unwinding device; 7. J-shaped blanket storage box; 8. Pre-coating device; 9. Pre-coated blanket; 10. Correction unwinding device; 11. Photoelectric centering and compounding device; 12. Blanket belt; 13. Tunnel drying room; 14. Blanket belt driving device; 15. Extrusion roller; 16. Strip carpet; 17. Cold water plate; 18. Cold water roller group; 19. Blanket storage rack; 20. Correction device; 21. Cutting machine; 22. Inspection table; 23. Single drying room; 24. Glue storage tank; 25. Active pattern roller; 26. Front guide roller; 27. Rear extrusion roller; 28. Pre-coated fluid glue. DETAILED DESCRIPTION

[0029] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0030] The hot melt adhesive mesh patchwork carpet of the present invention has a structure from top to bottom that three layers of materials, tufted blank carpet 1, hot melt adhesive mesh 2, and non-woven fabric 3, are laminated and hot-melt composited to form a three-layer hot melt adhesive mesh patchwork carpet. Figure 1 As shown, a tufted blanket 1, a hot melt adhesive mesh 2, a mesh cloth or a glass fiber cloth 4 (glass fiber cloth), a hot melt adhesive mesh 2, and a non-woven fabric 3 are laminated and hot-melt composited to form a five-layer hot melt adhesive mesh patchwork carpet as shown in FIG. Figure 2As shown. The tufted blanket 1, non-woven fabric 3, mesh cloth or glass fiber cloth 4 are the same as the materials currently used to make patchwork carpets, and the melting point temperature of the hot melt adhesive mesh 2 is 80°C to 100°C. The hot melt adhesive mesh 2 uses hot melt adhesive film or hot melt mesh produced by Jiangsu Huifeng Environmental Protection Technology Co., Ltd., such as model G8090, G7065, W4090, W5090, etc., and of course it is not ruled out that hot melt adhesive mesh materials produced by other similar companies can be used.

[0031] The backing process of hot melt adhesive mesh patchwork carpet: tufted blank carpet 1, hot melt adhesive mesh 2, non-woven fabric 3 are stacked and then hot melt composited; or tufted blank carpet 1, hot melt adhesive mesh 2, mesh cloth or glass fiber cloth 4, hot melt adhesive mesh 2, non-woven fabric 3 are stacked and then squeezed by rollers to make the layers of materials compacted to each other without gaps and the surface flat, and then enter the drying room at 80℃ to 120℃ for heating, so that the hot melt adhesive mesh is melted in the drying room, and after two to three times of squeezing by rollers, the hot melt adhesive mesh and its adjacent materials are bonded together, and the composite wide strip carpet is gradually cooled in the back section of the drying room, and the temperature is 60℃ to 50℃ at the drying room outlet, and after leaving the drying room, it is cooled by cold water rollers to make each bonding layer firm and flat, forming a wide strip of hot melt adhesive mesh carpet, which is then cut into hot melt adhesive mesh patchwork carpet by a cutting machine.

[0032] The hot melt adhesive mesh patchwork carpet backing processing line is divided into five-layer material and three-layer material backing processing, which are:

[0033] Five-layer material covering processing line for hot melt adhesive mesh patchwork carpet: Figures 3 to 7 As shown in the figure, the rear end of the bottom covering processing line is provided with a tufted blank blanket unwinding device 6 and a blank blanket storage J-shaped box 7 in sequence, and a pre-coating device 8 for coating the back of the tufted blank blanket 1 with glue is provided in front of the blank blanket storage J-shaped box 7. Figure 7As shown, the tufted blank blanket 1 is made into a tufted blank blanket with glue on the back, which is called a pre-coated blanket 9 in the industry. At least four correcting unwinding devices 10 are provided below the pre-coating device 8 and in front of the blank blanket J-shaped box. The specific number of the correcting unwinding devices 10 and the names and order of the unwinding materials installed on the correcting unwinding devices 10 are determined according to the structure of the tufted blank blanket 1, the hot melt adhesive mesh 2, the mesh cloth or the glass fiber cloth 4, the hot melt adhesive mesh 2, and the non-woven fabric 3 from top to bottom. The coated blanket 9 and other unwinding materials successively enter the photoelectric centering and compounding device 11. After the five layers of materials are rolled by the photoelectric centering and compounding device 11, the five layers of materials are made flatter and more closely fitted to each other. From top to bottom, the five layers of materials are the tufted blank blanket 1, the hot melt adhesive mesh 2, the mesh cloth or glass fiber cloth 4, the hot melt adhesive mesh 2, and the non-woven fabric 3. The five layers of materials move with the blanket belt 12 and enter the tunnel drying room 13. The blanket belt 12 is driven by the blanket belt driving device 14 to circulate in a circular manner. The tunnel The front section of the drying room 13 is a heating and compounding section, in which a heating device is provided to heat the heating and compounding section, and the temperature is maintained at 80°C to 120°C, and the hot melt adhesive web 2 in the five-layer material is melted in the heating and compounding section. Two to three extrusion rollers 15 are arranged in sequence in the heating and compounding section to extrude and compound the five-layer material, and the melted hot melt adhesive web 2 is firmly bonded with the tufted blanket 1, mesh cloth or glass fiber cloth 4, and non-woven fabric 3 of the adjacent material layers to form a wide strip carpet 16. The strip carpet 16 moves to the rear section of the tunnel drying room 13 where a cold water plate 17 is provided. The strip carpet 16 with relatively high heat moves on the surface of the cold water plate 17 and is cooled accordingly. The hot melt adhesive web 2 material is bonded and solidified with the adjacent layer material. The strip carpet 16 moves out of the tunnel drying room 13 and is separated from the carpet belt 12. It successively enters the carpet cold water roller group 18 for further cooling, and then passes through the carpet storage rack 19, the deviation correction device 20, the block cutter 21, and the inspection table 22 to become a qualified hot melt adhesive web mosaic carpet.

[0034] The three-layer material bottom covering processing line of the hot melt adhesive mesh patchwork carpet: from the rear end of the bottom covering processing line, there are arranged in sequence forward a tufted blank carpet unwinding device 6, a blank carpet storage J-type box 7, and a pre-coating device 8 for coating glue on the back of the tufted blank carpet in front of the blank carpet storage J-type box 7, so that the tufted blank carpet 1 becomes a tufted blank carpet 1 with glue on the back, which is called a pre-coating blanket 9 in the industry. Below the pre-coating device 8 and in front of the blank carpet storage J-type box 7, there are at least two correcting unwinding devices 10. The specific number of correcting unwinding devices 10 and the name and order of the unwinding materials installed on the correcting unwinding devices 10 are determined according to the structure of the tufted blank carpet 1, the hot melt adhesive mesh 2, and the non-woven fabric 3 compounded from top to bottom. The above five-layer material bottom covering processing line can also be used to install the roll materials of the hot melt adhesive mesh 1 and the non-woven fabric 3 on two of the correcting unwinding devices 10. Figure 8The tufted blank blanket 1 and other unwinding materials after the pre-coating device 8 successively enter the photoelectric centering and compounding device 11. After the three-layer material is rolled by the photoelectric centering and compounding device 11, the three-layer material is made flatter and more closely fitted to each other. From top to bottom, it is a three-layer material structure of the tufted blank blanket 1, the hot melt adhesive web 2, and the non-woven fabric 3. It moves with the blanket belt 12 and enters the tunnel drying room 13. The front section of the tunnel drying room 13 is a heating and compounding section. There is a heating device in the heating and compounding section to heat it. The temperature is kept adjustable at 80°C to 120°C. The hot melt adhesive web 2 in the three-layer material in the heating and compounding section is melted. Two to three squeezing rollers 15 are arranged in sequence in the heating and compounding section to heat the three-layer material. The three layers of materials are extruded and compounded, and the melted hot melt adhesive web 2 is firmly bonded with the tufted blank blanket 1 and the non-woven fabric 3 of the adjacent material layers to form a wide strip carpet 16. The strip carpet 16 moves to the rear section of the tunnel type drying room 13, in which a cold water plate 17 is provided. The strip carpet 16 with relatively high heat moves on the surface of the cold water plate 17 and is cooled accordingly. The hot melt adhesive web 2 material is bonded and solidified with the adjacent layer materials. The strip carpet 16 moves out of the tunnel type drying room 13 and is separated from the carpet belt 12, and successively enters the carpet cold water roller group 18 for further cooling, and then passes through the carpet storage rack 19, the deviation correction device 20, the block cutter 21, and the inspection table 22 to become a qualified hot melt adhesive web mosaic carpet.

[0035] The total length of the tunnel drying room 13 described in the above embodiments is 30 meters to 40 meters, of which the length of the heating and compounding section accounts for 85% of the total length. The moving speed of the blanket belt 12 is 8 meters / minute to 10 meters / minute. The tunnel drying room 13 is composed of a single drying room 23 connected in series. The pre-coating device 8 is as shown in FIG. Figure 7 As shown, it includes a glue storage tank 24, in which an active pattern roller 25 with grooves or pits on the surface is provided, and a front guide roller 26 and a rear squeezing roller 27 are provided in front and behind the active pattern roller 25, respectively. The back side of the introduced tufted blank blanket 1 is wrapped on the upper arc surface of the active pattern roller 25. When the glue storage tank 24 is filled with pre-coated fluid glue 28, as the active pattern roller 25 rotates, the pre-coated fluid glue 28 in the glue storage tank 24 is brought up and applied to the back side of the tufted blank blanket 1, and then squeezed by the rear squeezing roller 27, the pre-coated fluid glue 28 is forced to be squeezed to the root of the tuft of the tufted blank blanket 1, so that the tufts on the blank blanket are firmly bonded to the non-woven fabric at the root.

Claims

1. A hot melt adhesive mesh carpet tile, characterized by: Its structure consists of three layers of materials, tufted blanket, hot melt adhesive mesh and non-woven fabric, stacked and hot melt compounded from top to bottom, or five layers of materials, tufted blanket, hot melt adhesive mesh, mesh cloth or glass fiber cloth, hot melt adhesive mesh and non-woven fabric, stacked and hot melt compounded.

2. The production process of the hot melt adhesive mesh carpet patchwork according to claim 1, characterized in that The tufted blank carpet, hot melt adhesive mesh and non-woven fabric are stacked, or the tufted blank carpet, hot melt adhesive mesh, mesh cloth or glass fiber cloth, hot melt adhesive mesh and non-woven fabric are stacked, and the layers of materials are pressed against rollers to make them compact without gaps and have a smooth surface, and then enter a drying room at 80°C to 120°C for heating to melt the hot melt adhesive mesh in the drying room, and after two to three times of extrusion against rollers, the hot melt adhesive mesh and adjacent materials are bonded together, and the composite wide strip carpet is gradually cooled in the back section of the drying room to 60°C to 50°C at the drying room outlet, and then cooled by cold water rollers after leaving the drying room to make each bonding layer firm and smooth, forming a wide strip hot melt adhesive mesh carpet, which is then cut into hot melt adhesive mesh patchwork carpets by a cutting machine.

3. The hot melt adhesive mesh carpet patchwork bottom covering processing line according to claim 1 or 2 is divided into a three-layer material or a five-layer material bottom covering processing line, characterized in that: Three-layer material bottom covering processing line for hot-melt adhesive mesh patchwork carpet: from the rear end of the bottom covering processing line, a tufted blank carpet unwinding device and a blank carpet storage J-type box are arranged in sequence forward. At least two correcting unwinding devices are arranged in front of the blank carpet storage J-type box. The specific number of correcting unwinding devices and the names and front-to-back order of the unwinding materials installed on the correcting unwinding devices are determined according to the synthesized three-layer material structure of tufted blank carpet, hot-melt adhesive mesh and non-woven fabric from top to bottom. The tufted blank carpet and other unwinding materials successively enter the photoelectric centering and compounding device. After the three-layer materials are rolled by the photoelectric centering and compounding device, the three-layer materials are smoother and more closely fitted to each other. From top to bottom, the three-layer material structure of tufted blank carpet, hot-melt adhesive mesh and non-woven fabric is arranged, and they enter the tunnel drying room and the front of the tunnel drying room together with the movement of the carpet belt. The first section is a heating and compounding section. A heating device is provided in the heating and compounding section to heat the material at a temperature of 80°C to 120°C. The hot melt adhesive web in the three layers of material is melted in the heating and compounding section. The three layers of material are extruded and compounded by two to three extrusion rollers in turn in the heating and compounding section. The melted hot melt adhesive web is firmly bonded to the tufted blanket and non-woven fabric of the adjacent material layers to form a wide strip carpet. The strip carpet moves to the rear section of the tunnel-type drying room, in which a cold water plate is provided. The strip carpet with a relatively high temperature moves on the surface of the cold water plate and is cooled accordingly. The hot melt adhesive web material is bonded and solidified to the adjacent layer of material. The strip carpet moves out of the tunnel-type drying room and is separated from the carpet belt. It successively enters the carpet cold water group roller for further cooling. It then passes through the carpet storage rack, the deviation correction device, the block cutter, and the inspection table to become a qualified hot melt adhesive web patchwork carpet. Five-layer material bottom covering processing line for hot-melt adhesive mesh patchwork carpet: from the rear end of the bottom covering processing line, there are tufted blank carpet unwinding device and blank carpet storage J-type box in sequence. In front of the blank carpet storage J-type box, there are at least 4 deviation correction unwinding devices. The specific number of deviation correction unwinding devices and the names and order of the unwinding materials installed on the deviation correction unwinding devices are determined according to the five-layer material structure of tufted blank carpet, hot-melt adhesive mesh, mesh cloth or glass fiber cloth, hot-melt adhesive mesh, and non-woven fabric from top to bottom. The tufted blank carpet and other unwinding materials successively enter the photoelectric centering and compounding device. After the five-layer material is rolled by the photoelectric centering and compounding device, the five-layer material becomes smoother and fits better to each other. From top to bottom, it is a five-layer material structure of tufted blank carpet, hot-melt adhesive mesh, mesh cloth or glass fiber cloth, hot-melt adhesive mesh, and non-woven fabric, and enters the tunnel together with the movement of the carpet belt. The front section of the drying room is a heating and compounding section, in which a heating device is provided for heating at a temperature of 80°C to 120°C. In the heating and compounding section, the hot melt adhesive webs in the five layers of materials are melted, and the five layers of materials are extruded and compounded by two to three extrusion rollers in turn in the heating and compounding section. The melted hot melt adhesive webs are firmly bonded to the tufted blanket, mesh cloth or glass fiber cloth, and non-woven fabric of the adjacent material layers to form a wide strip carpet. The strip carpet moves to the rear section of the tunnel drying room, in which a cold water plate is provided. The strip carpet with relatively high heat moves on the surface of the cold water plate and is cooled accordingly. The hot melt adhesive web material is bonded and solidified to the adjacent layer of materials. The strip carpet moves out of the tunnel drying room and is separated from the carpet belt, and successively enters the carpet cold water group roller for further cooling, and then passes through the carpet storage rack, the deviation correction device, the block cutter, and the inspection table to become a qualified hot melt adhesive web patchwork carpet.

4. The hot melt adhesive mesh carpet tile bottom processing line according to claim 3 is characterized in that The total length of the tunnel type drying room is 30 meters to 40 meters, wherein the length of the heating compound section accounts for 85% of the total length.

5. The hot melt adhesive mesh carpet tile bottom covering processing line according to claim 3 or 4, characterized in that The tunnel type drying room is formed by connecting single drying rooms in series.

6. The hot melt adhesive mesh carpet tile bottom covering processing line according to claim 3, characterized in that The moving speed of the blanket belt is 8 m / min-10 m / min.

7. The hot melt adhesive mesh carpet tile bottom covering processing line according to claim 3, characterized in that The tufted blank carpet is coated with pre-coating fluid glue on the back of the tufted blank carpet through a pre-coating device before being covered with other materials.

8. The hot melt adhesive mesh carpet tile bottom covering processing line according to claim 7, characterized in that The pre-coating device comprises a glue storage tank, in which an active pattern roller with grooves or pits on the surface is arranged, and a front guide roller and a rear squeezing roller are arranged in front and behind the active pattern roller respectively, and the back of the introduced tufted blank blanket is wrapped on the upper arc surface of the active pattern roller. When the glue storage tank is filled with pre-coated fluid glue, as the active pattern roller rotates, the pre-coated fluid glue in the glue storage tank is brought up and coated on the back of the tufted blank blanket, and then squeezed by the rear squeezing roller, the pre-coated fluid glue is forced to be squeezed to the root of the tuft of the tufted blank blanket, so that the tufts on the blank blanket are firmly bonded to the non-woven fabric at the root.

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