Wood grain sports floor production process

Abstract

The invention relates to the technical field of PVC (polyvinyl chloride) floors, and discloses a wood grain sports floor production process which comprises the following steps: S1, continuously conveyed high-temperature release paper is used as a carrier, slurry of a surface layer I is coated on the high-temperature release paper, and the high-temperature release paper enters a drying oven to be heated and cured; s2, wood grain slurry is printed to the surface of the base material output in the step S1 through a roller printing device to form a printed wood grain layer, and the printed wood grain layer enters a drying oven to be heated and cured; s3, the surface of the base material output in the step S2 is coated with slurry of a second surface layer, and the base material enters a drying oven to be heated and cured; s4, the surface of the base material output in the step S3 is coated with slurry of a foaming layer, and the base material enters a drying oven to be heated, foamed and cured; and S5, stripping the high-temperature release paper, and outputting a finished coiled material. According to the production process of the wood grain sports floor, through the mode of layer-by-layer coating and heating curing, on-line compounding of all layers can be achieved, the step of off-line compounding and additional use of bonding glue or hot pressing is avoided, and the thickness precision of the sports floor is convenient to control.

Description

Technical Field

[0001] The invention relates to the technical field of PVC floors, and in particular to a production process of a wood-grain sports floor. Background Art

[0002] PVC sports floor is a very popular new type of lightweight floor decoration material, also known as "lightweight floor material". It entered the Chinese market in the early 1980s and has been widely recognized in large and medium-sized cities in China. PVC sports floor is widely used in indoor sports venues such as volleyball halls, basketball halls, table tennis halls, badminton halls, gyms, etc. due to its excellent physical properties and cushioning performance with foam bottom.

[0003] Adding wood grain patterns on the surface of PVC sports flooring improves the appearance and enhances the visual comfort of athletes. At present, it is often produced by cold pasting or hot laminating a printed film with wood grain. The printed film needs to be purchased separately by the baseboard manufacturer and then laminated offline, that is, the printed film is fixedly connected to the top surface of the PVC sports floor. For example, the invention patent with announcement number CN109098392A uses an interface agent to bond the rubber wear-resistant layer to the PVC composite layer to obtain a new type of rubber-plastic sports floor. However, this offline bonding or hot pressing lamination method has the disadvantages of complex procedures and high costs.

[0004] Although the invention patent with announcement number CN116604958A adopts a method of directly printing wood grain online, it adopts the method of first coating a printing layer with wood grain color, curing and forming the coated printing layer, and then embossing with an embossing roller. However, this technical solution has a long distribution space and an insufficiently compact structure. The printing roller also needs to be heated and reshaped, and the processed wood grain sports floor has a poor sense of convexity on the front side.

[0005] In order to overcome the above problems, a production process of wood grain sports floor is needed. Summary of the invention

[0006] The purpose of the present invention is to provide a production process for a wood grain sports floor, in which a wood grain layer is directly arranged between surface layers, and the front side of the floor has a strong concave-convex feeling, thereby improving the foot touch feeling of athletes.

[0007] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0008] The invention discloses a wood grain sports floor, comprising a first surface layer, a wood grain layer, a second surface layer and a foaming layer stacked together from top to bottom, wherein the first surface layer as a whole generates concave-convex deformation as the texture of the wood grain layer changes.

[0009] Furthermore, the bottom surface of the foaming layer is also compounded with a bottom layer

[0010] The present invention also discloses a production process of a wood grain sports floor, comprising the following steps:

[0011] S1, using continuously conveyed high-temperature release paper as a carrier, coating the slurry of the first surface layer on it, and putting it into an oven for heating and curing;

[0012] S2, using a roller printing device to print the wood grain slurry onto the surface of the substrate output in step S1 to form a printed wood grain layer, and then putting the printed wood grain layer into an oven for heating and curing;

[0013] S3, coating the slurry of the second surface layer on the surface of the substrate output in step S2, and putting it into an oven for heating and curing;

[0014] S4, coating the slurry of the foaming layer on the surface of the substrate output in step S3, and putting it into an oven for heating and foaming and curing;

[0015] S5. Peel off the high temperature release paper and output the finished roll.

[0016] Furthermore, the wood grain slurry used in step S2 is prepared by soaking and grinding an organic pigment with a plasticizer.

[0017] Furthermore, the roller printing device used in step S2 includes a frame and a wood grain roller, a rubber roller, an ink-dipping roller, an ink-coating roller, a scraper and an ink basin arranged on the frame, the ink basin is horizontally arranged directly below the wood grain roller, the ink-dipping roller and the ink-coating roller dip the wood grain slurry in the ink basin and apply it to the wood grain roller with a concave-convex texture, the scraper is arranged on one side of the wood grain roller to remove excess wood grain slurry; the two rubber rollers attach and guide the substrate output from step S1 to the wood grain roller.

[0018] Furthermore, the roller printing device also includes an inflation roller, which is in rolling contact with the wood grain roller and presses the substrate output in step S1, and a plurality of strip grooves are evenly distributed on the circumference of the outer wall of the rubber layer of the inflation roller, and the strip grooves in contact with the wood grain roller bulge out compressed air to press the substrate output in step S1; the two inflation rollers operate in linkage to ensure that the substrate output in step S1 is continuously squeezed by compressed air.

[0019] Furthermore, the inflation roller also includes an outer cylinder base and an inner cylinder that are coaxially nested, the two ends of the inner cylinder are coaxially fixedly connected with a tube shaft, the tube shaft supports the outer cylinder base through a bearing, the outer end of the tube shaft is installed on the frame through a support seat, and one end of the tube shaft is provided with an air pipe joint for introducing compressed air; the outer wall of the outer cylinder base is bonded and composited with the adhesive layer, and an air hole that penetrates the wall of the outer cylinder base is provided at the bottom of the groove, and the inner cylinder is provided with an air outlet structure at the same axial position of the air hole.

[0020] Furthermore, the air outlet structure includes a waist-shaped hole and a sealing ring. The waist-shaped hole is opened on the wall of the inner tube, and the long side direction of the waist-shaped hole is arranged along the axial direction; an annular sealing groove with a waist-shaped contour is arranged on the periphery of the waist-shaped hole, and the sealing ring is installed in the annular sealing groove and can seal the gap between the outer tube base and the inner tube.

[0021] Furthermore, a synchronous wheel is coaxially arranged at one end of the outer cylinder base body protruding out of the end surface of the wood-grained roller, and the two synchronous wheels of the two inflation rollers are connected by a synchronous belt transmission.

[0022] Furthermore, a top screw is arranged on the support seat, and an air outlet orientation mark is arranged on the outer wall of the end of the tube shaft at the same circumferential angle position as the waist-shaped hole; the inner end of the top screw abuts against the outer wall of the end of the tube shaft.

[0023] Compared with the prior art, the beneficial technical effects of the present invention are:

[0024] The wood grain sports floor disclosed in the present invention has a wood grain layer sandwiched between the first surface layer and the second surface layer, which has good firmness and can prevent the surface layer from being worn and discolored. The first surface layer as a whole is deformed with the texture of the wood grain layer, which improves the appearance, provides better touch for the feet of athletes, and increases friction. The bottom layer has a high density after solidification, which can prevent the foaming layer from being damaged by hard objects.

[0025] The wood grain sports floor production process of the present invention can realize online compounding of each layer by means of layer-by-layer coating and heat curing, avoiding the offline compounding and the need for additional use of adhesive glue or hot pressing, and is convenient for controlling the thickness accuracy of the sports floor. Using plasticizer to soak organic pigment as ink for the wood grain layer can increase the composite strength with the surface layer without losing glass; the organic pigment has good light resistance and can resist ultraviolet radiation, and the two surface layers sandwich the wood grain layer, which can effectively prevent the printed wood grain layer made of organic pigment from being worn away. The roller printing device used in the wood grain sports floor production process of the present invention can achieve deep embossing processing using an inflatable roller, which significantly improves the bumpy feel of the product appearance compared to embossing using only a rubber roller. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The present invention will be further described below in conjunction with the accompanying drawings.

[0027] Figure 1 It is a schematic diagram of the cross-sectional structure of the wood-grain sports floor of the present invention;

[0028] Figure 2 It is a schematic diagram of the process flow of the wood grain sports floor production process of the present invention;

[0029] Figure 3It is a schematic diagram of the structure of the printing equipment in the production process of the wood grain sports floor of the present invention;

[0030] Figure 4 for Figure 3 A schematic diagram of the partially enlarged structure of the middle inflation roller;

[0031] Figure 5 for Figure 3 A schematic diagram of the structure of the middle inflation roller from a top view;

[0032] Figure 6 It is a schematic diagram of the longitudinal cross-sectional structure of the end of the inflation roller in the present invention.

[0033] Explanation of the reference numerals in the accompanying drawings: 1. Surface layer one; 2. Wood grain layer; 3. Surface layer two; 4. Middle layer; 5. Bottom layer; 6. Wood grain roller; 7. Inflatable roller; 701. Glue layer; 702. Strip groove; 703. Air vent; 704. Outer cylinder base; 705. Inner cylinder; 706. Waist-shaped hole; 707. Sealing ring; 708. Pipe shaft; 709. Air pipe joint; 710. End baffle; 711. Synchronous wheel; 8. Rubber roller; 9. Ink dipping roller; 10. Ink coating roller; 11. Scraper; 12. Ink basin; 13. Synchronous belt; 14. Support seat; 15. Top screw. DETAILED DESCRIPTION

[0034] The core of the present invention is to provide a production process for a wood grain sports floor, in which the wood grain layer is directly arranged between the surface layers, and the front side of the floor has a strong concave-convex feeling, thereby improving the foot touch feeling of athletes.

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0037] With reference to the accompanying drawings, Figure 1 It is a schematic diagram of the cross-sectional structure of the wood-grain sports floor of the present invention; Figure 2 It is a schematic diagram of the process flow of the wood grain sports floor production process of the present invention; Figure 3It is a schematic diagram of the structure of the printing equipment in the production process of the wood grain sports floor of the present invention; Figure 4 for Figure 3 A schematic diagram of the partially enlarged structure of the middle inflation roller; Figure 5 for Figure 3 A schematic diagram of the structure of the middle inflation roller from a top view; Figure 6 It is a schematic diagram of the longitudinal cross-sectional structure of the end of the inflation roller in the present invention.

[0038] Example 1

[0039] In a specific embodiment, Figure 1 As shown, the wood grain sports floor produced by the present invention includes a surface layer 1, a wood grain layer 2, a surface layer 2 3 and a foaming layer 4 stacked together from top to bottom, the surface layer 1 and the surface layer 2 3 are both transparent, the wood grain layer 2 is a color and pattern display layer, and the surface layer 1 as a whole produces concave-convex deformation as the texture of the wood grain layer 2 changes.

[0040] like Figure 1 As shown, the bottom surface of the foaming layer 4 is also compounded with a bottom layer 5. Specifically, the surface layer 1, the surface layer 2, the foaming layer 4 and the bottom layer 5 are all made by curing different fillers and different proportions of PVC resin-based materials. The surface layer 1 and the surface layer 2 have good wear resistance, and the surface layer 1 is added with a UV protection agent. Among them, the bottom layer 5 has a high density after curing, which can prevent the foaming layer 4 from being damaged by hard objects.

[0041] In a specific embodiment, the thickness of the surface layer 1 is 0.1-0.3 mm, the thickness of the wood grain layer 2 is 0.02-0.05 mm, the thickness of the surface layer 3 is 0.1-0.3 mm, the thickness of the foaming layer 4 is 2-4 mm, the thickness of the bottom layer 5 is 1-2 mm, and the total thickness is controlled at about 4.5 mm.

[0042] By sandwiching a wood grain layer 2 between the surface layer 1 and the surface layer 2 3, the surface layer 1 has good firmness and can prevent it from being worn and discolored. The surface layer 1 as a whole is deformed with the texture of the wood grain layer 2, which improves the appearance, provides a better touch for the feet of athletes, and increases friction.

[0043] Example 2

[0044] The present invention also discloses a production process of a wood grain sports floor, such as Figure 2 As shown, the following steps are included:

[0045] S1, using continuously conveyed high-temperature release paper or high-temperature cloth as a carrier, coating the slurry of the surface layer 1 on the carrier, and putting it into an oven for heating and curing;

[0046] S2, using a roller printing device to print the wood grain slurry onto the surface of the substrate output in step S1 to form a printed wood grain layer, and then putting the printed wood grain layer into an oven for heating and curing;

[0047] S3, coating the slurry of the second surface layer on the surface of the substrate output in step S2, and putting it into an oven for heating and curing;

[0048] S4, coating the slurry of the foaming layer on the surface of the substrate output in step S3, and putting it into an oven for heating, foaming and curing.

[0049] S5. Peel off the high temperature release paper and output the finished roll.

[0050] In a specific embodiment, the process for producing wood grain sports flooring of the present invention further includes a bottom layer process between steps S4 and S5, in which the bottom layer slurry is coated on the surface of the substrate outputted from step S4 and then put into an oven for heating and curing.

[0051] Through layer-by-layer coating and heat curing, the layers can be compounded online, avoiding the offline compounding steps of using adhesive or hot pressing, and making it easier to control the thickness accuracy of the sports floor.

[0052] In a specific implementation of this embodiment, Figure 2 As shown, the wood grain slurry used in step S2 is made by soaking and grinding an organic pigment with a plasticizer, and after grinding, it needs to be filtered through a 350-mesh filter before use.

[0053] Using plasticizer to soak organic pigment as ink for wood grain layer can increase the composite strength with the surface layer and will not fall off the glass; organic pigment has good light resistance and can resist ultraviolet radiation, and sandwiching wood grain layer between two surface layers can effectively prevent the printed wood grain layer made of organic pigment from being worn away.

[0054] In a specific implementation of this embodiment, Figures 3 to 6 As shown, the roller printing device used in step S2 includes a frame and a wood grain roller 6, a rubber roller 8, an ink-dipping roller 9, an ink-applying roller 10, a scraper 11 and an ink basin 12 arranged on the frame. The ink basin 12 is horizontally arranged directly below the wood grain roller 6. The ink-dipping roller 9 and the ink-applying roller 10 dip the wood grain slurry in the ink basin 12 and apply it to the wood grain roller 6 with a concave-convex texture. The scraper 11 is arranged on one side of the wood grain roller 6 to remove excess wood grain slurry. The two ends of the wood grain roller 6 are smooth roller sections with slightly increased diameters. The side edge of the scraper 11 abuts against the smooth roller section, which can avoid completely scraping off the partially protruding parts of the wood grain slurry in the wood grain section in the middle of the wood grain roller 6. Two rubber rollers 8 attach and guide the substrate output from step S1 to the wood grain roller 6 at two positions above and below the side. The temperature range of the substrate coming out of the oven in step S1 is between 40 and 60° C., that is, the substrate has good plasticity within this temperature range and can produce preliminary concave-convex textures under the pressing force of the rubber roller 8 .

[0055] The scraper 11 can ensure that the wood grain section in the middle of the wood grain roller 6 is completely coated with the wood grain slurry; the rubber roller 8 and the wood grain roller 6 cooperate to extrude the substrate output in step S1, and the concave-convex texture on the substrate can be preliminarily extruded.

[0056] In a specific implementation of this embodiment, Figures 3 to 6 As shown, the roller printing device also includes an air-filled roller 7, which rolls in contact with the wood-grain roller 6 and presses the substrate outputted in step S1. The outer wall of the rubber layer 701 of the air-filled roller 7 is evenly distributed with a plurality of strip grooves 702 on the circumference, and the strip grooves 702 in contact with the wood-grain roller 6 swell compressed air to press the substrate outputted in step S1. The strip groove 702 is opened in the center and the two ends are not open, and the length of the strip groove 702 is adapted to the wood-grain section in the middle of the wood-grain roller 6. The width of the strip groove 702 is greater than the width of the outer wall between two adjacent strip grooves 702. The two air-filled rollers 7 operate in conjunction to ensure that the substrate outputted in step S1 is continuously squeezed by compressed air.

[0057] During the rolling process of the air roller 7, when the strip groove 702 faces the wood grain roller 6, the edges of the adhesive layer around the strip groove 702 contact the release paper of the substrate output in step S1 to form a momentary sealed chamber. The compressed air filled in the sealed chamber squeezes the substrate, so that the substrate can better fit the concave and convex surface of the wood grain roller 6 and better dip the wood grain slurry. At the same time, during the extrusion process, because the surface texture of the wood grain roller 6 is connected and larger than the width of the strip groove 702, air or the wood grain slurry will not accumulate, and it is easier to form a divergent effect at the wood grain strip. Through the linkage operation of the air roller 7, the strip position of the air roller 7 that passes first without air squeezing is covered by the strip groove 702 of the next air roller 7, so that the entire surface of the strip substrate output in step S1 is continuously squeezed by compressed air, and the complete substrate as a whole is deeply embossed.

[0058] Specifically, if Figures 3 to 6 As shown, the inflatable roller 7 also includes an outer cylinder base 704 and an inner cylinder 705 which are coaxially nested. The inner cylinder 705 is coaxially welded with a pipe shaft 708 at both ends, and the inner cavity is connected. The pipe shaft 708 supports the outer cylinder base 704 through a bearing, and an end baffle 710 for positioning the bearing is provided at the end of the outer cylinder base 704, that is, the outer cylinder base 704 rotates with the wood-grained roller 6, and the inner cylinder 705 does not rotate. The outer end of the pipe shaft 708 is installed on the frame through a support seat 14, and one end of the pipe shaft 708 is provided with an air pipe joint 709 for introducing compressed air. The air pipe joint 709 is connected to a gas cylinder or an air pump storing clean and dry compressed air through a hose, and a valve assembly is provided on the air pipe as needed. The outer wall of the outer cylinder base 704 is bonded with a composite adhesive layer 701, and a vent hole 703 penetrating the wall of the outer cylinder base 704 is provided at the bottom of the groove 702, and the inner cylinder 705 is provided with an air outlet structure at the same axial position of the vent hole 703.

[0059] Specifically, the air pressure supplied to the air pipe joint 709 is 0.25-0.35 MPa, that is, the compressed air supplied to the groove 702 is low-pressure compressed air, so as to avoid cracking or breaking the substrate.

[0060] Obviously, Figure 6 As shown, the number of the vent holes 703 can be multiple and arranged at equal intervals along the length direction of the strip groove 702, and the number of the corresponding air outlet structures is also set to be multiple to be consistent with the number of vent holes 703 in one strip groove 702 and arranged one by one.

[0061] Specifically, if Figure 4 and Figure 6 As shown, the air outlet structure includes a waist-shaped hole 706 and a sealing ring 707. The waist-shaped hole 706 is provided on the wall of the inner tube 705, and the long side direction of the waist-shaped hole 706 is arranged along the axial direction. An annular sealing groove with a waist-shaped profile is arranged on the periphery of the waist-shaped hole 706, and the sealing ring 707 is installed in the annular sealing groove and can seal the gap between the outer tube base 704 and the inner tube 705.

[0062] By setting the coaxially nested outer cylinder base 704 and inner cylinder 705, during the rolling process of the outer cylinder base 704, different vents 703 are respectively connected with the waist-shaped holes 706 facing the wood-grain roller 6, and the compressed air in the inner cavity of the inner cylinder 705 is introduced into the continuously switched strip grooves 702 for air extrusion, and the substrate is deeply embossed. By setting the air outlet structure as the waist-shaped hole 706, the axial error can be bridged to ensure effective air guidance. By setting the sealing ring 707, it can be prevented that the compressed air does not enter the strip groove 702 and leaks from the gap between the outer cylinder base 704 and the inner cylinder 705.

[0063] In a specific implementation of this embodiment, Figure 3 and Figure 5 As shown, a synchronous wheel 711 is coaxially fixedly mounted on one end of the outer cylinder base 704 protruding out of the end surface of the wood-grained roller 6 , and the two synchronous wheels 711 of the two inflatable rollers 7 are connected through a synchronous belt 13 .

[0064] Obviously, the two outer cylinder bases 704 of the two inflatable rollers 7 can also be connected by a sprocket and a chain to ensure that the two outer cylinder bases 704 roll in unison, and the strip grooves 702 of the two inflatable rollers 7 are staggered to perform deep embossing on the entire surface of the substrate. Similar simple replacement methods all fall within the protection scope of the present invention.

[0065] In a specific implementation of this embodiment, Figure 5 and Figure 6As shown, a top screw 15 is provided on the support seat 14, and an air outlet orientation mark is provided on the outer wall of the end of the tube shaft 708 at the same circumferential angle position as the waist-shaped hole 706. That is, the air outlet orientation mark and the waist-shaped hole 706 are at the same angular position. The inner end of the top screw 15 abuts against the outer wall of the end of the tube shaft 708 to lock the tube shaft 708 circumferentially.

[0066] By adding a top screw 15 to the support seat 14, the circumferential position of the tube shaft 708 and the inner tube 705 can be adjusted and effectively locked; by providing the outlet orientation mark on the outer wall of the end of the tube shaft 708, it is convenient to observe when adjusting the outlet direction of the waist-shaped hole 706.

[0067] In the process of wood grain printing in the wood grain sports floor production process of the present invention: Figure 3 As shown, the ink-dipping roller 9 and the ink-spreading roller 10 dip the wood grain slurry in the ink basin 12 and apply it to the wood grain roller 6 with a concave-convex texture, and the scraper 11 removes the excess wood grain slurry on one side of the wood grain roller 6. Two rubber rollers 8 attach and guide the substrate output from step S1 to the wood grain roller 6 at two positions above and below the side. During the attachment and conveying process, the wood grain slurry on the wood grain roller 6 is transferred to the surface of the surface layer 1. In this process, the adhesive layer 701 of the two air-filled rollers 7 are in rolling contact with the wood-grain roller 6. During the rolling process of the air-filled roller 7, when the strip groove 702 faces the wood-grain roller 6, the adhesive layer edge around the strip groove 702 contacts the release paper on the back of the substrate output in step S1 to form a momentary sealed chamber. The momentary flashing sealed chamber is filled with compressed air and squeezes the substrate, so that the substrate can better fit the concave and convex surface of the wood-grain roller 6 and better dip the wood-grain slurry in the pits. The molding position and pattern texture are consistent, and deep embossing treatment can be achieved compared with the rolling method. The two outer cylinder base bodies 704 are connected by the synchronous wheel 711 and the synchronous belt 13 to ensure that the two outer cylinder base bodies 704 roll in a consistent and synchronous manner. The strip grooves 702 of the two air-filled rollers 7 are just staggered and continuously pressed, so that the entire surface of the substrate can be deeply embossed.

[0068] In summary, the wood grain sports floor production process of the present invention can realize online compounding of each layer by means of layer-by-layer coating and heat curing, avoiding the offline compounding and the need for additional adhesive glue or hot pressing, and is convenient for controlling the thickness accuracy of the sports floor. Using plasticizer-soaked organic pigments as ink for the wood grain layer can increase the composite strength with the surface layer without losing glass; organic pigments have good light resistance and can resist ultraviolet radiation, and the two surface layers sandwiching the wood grain layer can effectively prevent the printed wood grain layer made of organic pigments from being worn away. The roller printing device used in the wood grain sports floor production process of the present invention utilizes the inflatable roller 7 to achieve deep embossing processing, which significantly improves the convex and concave feel of the product appearance compared to embossing with only a rubber roller.

[0069] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0070] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A production process for wood grain sports flooring, characterized in that: The following steps are involved: S1, using continuously conveyed high-temperature release paper as a carrier, coating the slurry of the first surface layer on it, and putting it into an oven for heating and curing; S2, using a roller printing device to print the wood grain slurry onto the surface of the substrate output in step S1 to form a printed wood grain layer, and then putting the printed wood grain layer into an oven for heating and curing; S3, coating the slurry of the second surface layer on the surface of the substrate output in step S2, and putting it into an oven for heating and curing; S4, coating the slurry of the foaming layer on the surface of the substrate output in step S3, and putting it into an oven for heating and foaming and curing; S5. Peel off the high temperature release paper and output the finished roll.

2. The production process of wood grain sports floor according to claim 1, characterized in that: The wood grain slurry used in step S2 is prepared by soaking and grinding an organic pigment with a plasticizer.

3. The production process of wood grain sports floor according to claim 1, characterized in that: The roller printing device used in step S2 comprises a frame and a wood grain roller (6), a rubber roller (8), an ink-dipping roller (9), an ink-applying roller (10), a scraper (11) and an ink basin (12) arranged on the frame, wherein the ink basin (12) is arranged horizontally directly below the wood grain roller (6), the ink-dipping roller (9) and the ink-applying roller (10) dip the wood grain slurry in the ink basin (12) and apply it to the wood grain roller (6) having a concave-convex texture, and the scraper (11) is arranged on one side of the wood grain roller (6) to remove excess wood grain slurry; the two rubber rollers (8) adhere and guide the substrate output from step S1 to the wood grain roller (6).

4. The production process of wood grain sports floor according to claim 3, characterized in that: The roller printing device also includes an air-filled roller (7), the air-filled roller (7) rolling in contact with the wood-grained roller (6) and pressing the substrate outputted in step S1, a plurality of strip grooves (702) evenly distributed on the circumference of the outer wall of the rubber layer (701) of the air-filled roller (7), the strip grooves (702) in contact with the wood-grained roller (6) bulging out compressed air to press the substrate outputted in step S1; the two air-filled rollers (7) operate in conjunction to ensure that the substrate outputted in step S1 is continuously squeezed by compressed air.

5. The production process of wood grain sports floor according to claim 4, characterized in that: The inflation roller (7) further comprises an outer cylinder base (704) and an inner cylinder (705) coaxially nested, the inner cylinder (705) having a tube shaft (708) coaxially fixedly connected at both ends, the tube shaft (708) supporting the outer cylinder base (704) via a bearing, the outer end of the tube shaft (708) being mounted on the frame via a support seat (14), one end of the tube shaft (708) being provided with an air pipe joint (709) for introducing compressed air; the outer wall of the outer cylinder base (704) is bonded and composited with the adhesive layer (701), the bottom of the strip groove (702) is provided with an air vent (703) penetrating through the cylinder wall of the outer cylinder base (704), and the inner cylinder (705) is provided with an air outlet structure at the same axial position as the air vent (703).

6. The production process of wood grain sports floor according to claim 5, characterized in that: The air outlet structure comprises a waist-shaped hole (706) and a sealing ring (707); the waist-shaped hole (706) is provided on the wall of the inner tube (705); the long side direction of the waist-shaped hole (706) is arranged along the axial direction; an annular sealing groove with a waist-shaped contour is arranged on the periphery of the waist-shaped hole (706); the sealing ring (707) is installed in the annular sealing groove and can seal the gap between the outer tube base (704) and the inner tube (705).

7. The production process of wood grain sports floor according to claim 5, characterized in that: A synchronous wheel (711) is coaxially arranged at one end of the outer cylinder base (704) protruding out of the end surface of the wood-grained roller (6), and the two synchronous wheels (711) of the two inflation rollers (7) are connected by a synchronous belt (13).

8. The process for producing wood grain sports flooring according to claim 6, characterized in that: The support seat (14) is provided with a top screw (15), and an air outlet orientation mark is provided on the outer wall of the end of the tube shaft (708) at the same circumferential angle position as the waist-shaped hole (706); the inner end of the top screw (15) abuts against the outer wall of the end of the tube shaft (708).

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