Arc punching light SPC floor

Abstract

The utility model relates to an arc punching light SPC floor, and relates to the field of building decoration materials. The arc punching light SPC floor comprises a protective layer, a wear-resistant layer, a printing layer and a light base layer, the protective layer, the wear-resistant layer, the printing layer and the light base layer are stacked in sequence; the back face of the light base layer is provided with plane shading, and the light base layer comprises a non-solid layer with dense air holes. The density of the light base layer is set to be 1.0-1.8 g / cm < 3 >, and the hardness is set to be 60-75 HD. According to the arc punching light SPC floor, the technical problems that in the prior art, an arc SPC floor is long in machining time, high in cost and prone to deformation are solved.

Description

Technical Field

[0001] The present application relates to the field of building decoration materials, and in particular to an arc punched lightweight SPC floor. Background Art

[0002] Arc SPC (Stone Plastic Composite Flooring) flooring has excellent performance, including but not limited to: good overall paving effect, obvious layering and no need for caulking; arc chamfers reduce edge wear and warping, and extend the life of the floor; lock-and-lock joints are easy to clean; high safety, rounded edges, and no scratches.

[0003] The existing arc SPC flooring molding process uses mechanical pressure, which can easily cause the color film on the arc edge to turn white, and the wear-resistant layer to crack or delaminate. To address this problem, the current method mainly uses tempering to 80°C-120°C to soften the entire surface before filling the mold and forming. After cooling and shaping, the semi-finished product is obtained, and then slotting is performed to obtain the finished product. Due to the high tempering temperature, the cooling time is long, the cost is high, and the floor is prone to deformation. Utility Model Content

[0004] The purpose of the embodiments of the present application is to provide a circular arc punched lightweight SPC floor, which alleviates the technical problems of the prior art of the circular arc SPC floor, such as long processing time, high cost and easy deformation of the floor.

[0005] In view of this, the technical solution provided by the present invention is:

[0006] In the first aspect, the arc punched lightweight SPC floor provided by the present invention includes a protective layer, a wear-resistant layer, a printing layer and a lightweight base layer;

[0007] The protective layer, the wear-resistant layer, the printing layer and the lightweight base layer are stacked in sequence;

[0008] The back of the lightweight base layer is provided with a plane shading, and the lightweight base layer includes a non-solid layer with dense pores;

[0009] The density of the lightweight base layer is set to 1.0-1.8 g / cm 3 , the hardness is set to 60-75HD.

[0010] In combination with the first aspect, the first implementation method of the first aspect provided by the embodiment of the present utility model is: the thickness of the lightweight base layer is set to 6.0-12.0 mm.

[0011] In combination with the first implementation of the first aspect, the second implementation of the first aspect provided by the embodiment of the present utility model is: the protective layer, the wear-resistant layer, the printing layer and the lightweight base layer are fixedly connected in sequence.

[0012] In combination with the second embodiment of the first aspect, a third embodiment of the first aspect provided by an embodiment of the present invention is as follows: the lightweight base layer includes a first solid layer and a second solid layer, the first solid layer and the second solid layer are respectively located on the upper and lower sides of the non-solid layer with dense pores, and are both fixedly connected to the non-solid layer with dense pores;

[0013] The density of the lightweight base layer is set to 1.0-1.3 g / cm 3 , the hardness is set to 65-70HD.

[0014] In combination with the second embodiment of the first aspect, the fourth embodiment of the first aspect provided by the embodiment of the present invention is: the lightweight base layer includes a third solid layer and a fourth solid layer, the third solid layer and the fourth solid layer are respectively located on the upper and lower sides of the non-solid layer with dense pores, and are both fixedly connected to the non-solid layer with dense pores;

[0015] The density of the lightweight base layer is set to 1.3-1.6 g / cm 3 , the hardness is set to 70-75HD.

[0016] In combination with the second embodiment of the first aspect, a fifth embodiment of the first aspect provided by an embodiment of the present utility model is: the lightweight base layer includes a first crust layer and a second crust layer, the first crust layer and the second crust layer are respectively located on the upper and lower sides of the non-solid belt dense porous layer, and are both fixedly connected to the non-solid belt dense porous layer;

[0017] The density of the lightweight base layer is set to 1.6-1.8 g / cm3, and the hardness is set to 60-65 HD.

[0018] In combination with the second implementation of the first aspect, the sixth implementation of the first aspect provided by the embodiment of the present utility model is: the thickness of the wear-resistant layer is set to 0.3-0.7 mm.

[0019] In combination with the first aspect, a seventh implementation of the first aspect provided by the embodiment of the present invention is as follows: a first side wall of the arc punched lightweight SPC floor is provided with a first clamping portion, a second side wall is provided with a second clamping portion, and the first clamping portion and the second clamping portion adjacent to each other in two adjacent arc punched lightweight SPC floors are clamped together;

[0020] The first side wall is arranged opposite to the second side wall.

[0021] In combination with the seventh embodiment of the first aspect, an eighth embodiment of the first aspect provided by an embodiment of the present utility model is as follows: the first clamping portion includes a first protrusion, a bottom wall of the first protrusion is provided with a first groove, and a side wall is provided with a second protrusion;

[0022] The second clamping portion includes a third protrusion and a fourth protrusion, the third protrusion and the fourth protrusion are spaced apart in the vertical direction to form a second groove therebetween, and a fifth protrusion is provided on the top wall of the fourth protrusion;

[0023] The first protrusion abuts against the third protrusion, the second protrusion is inserted into the second groove, and the fifth protrusion is inserted into the first groove.

[0024] In combination with the eighth implementation of the first aspect, a ninth implementation of the first aspect provided by an embodiment of the present utility model is as follows: the top wall of the first protrusion is configured to be arc-shaped, and the top wall of the third protrusion is configured to be arc-shaped;

[0025] The arc shape of the top wall of the first protrusion is oriented in an opposite direction to the arc shape of the top wall of the third protrusion.

[0026] Based on the above technical solutions, the technical effects that can be achieved by this utility model are analyzed as follows:

[0027] The arc punched lightweight SPC floor provided by the utility model comprises a protective layer, a wear-resistant layer, a printing layer and a lightweight base layer; the protective layer, the wear-resistant layer, the printing layer and the lightweight base layer are stacked in sequence; the back of the lightweight base layer is provided with a flat shading, and the lightweight base layer includes a non-solid layer with dense pores; the density of the lightweight base layer is set to 1.0-1.8g / cm 3, the hardness is set to 60-75HD. The arc punched lightweight SPC floor consists of a protective layer, a wear-resistant layer, a printing layer and a lightweight base layer from top to bottom; the protective layer can prevent ultraviolet rays from volatilizing the chemical substances in the board. Adding the protective layer can improve the scratch resistance, anti-pollution, antibacterial and anti-slip properties of the floor surface, and control the gloss and roughness of the floor surface; the wear-resistant layer is wear-resistant and scratch-resistant, which extends the service life of the floor. It can also provide additional anti-slip protection under wet and slippery conditions, increasing the safety of use; the protective layer, wear-resistant layer, printing layer and lightweight base layer are fixedly connected by extrusion process on a sheet-like continuous substrate, without glue and hot lamination. The printed layer can be set to various wood grains, stone grains or carpet grains as a decorative layer to meet the different needs of different occasions and tastes. The back of the lightweight base layer is provided with a flat bottom grain to make the punching force uniform. The lightweight base layer includes a non-solid layer with dense pores, which makes its hardness lower than the hardness and density of the existing SPC floor substrate. The tempering temperature of the arc punching forming process is correspondingly lower than the temperature required for the existing SPC floor, achieving the effect of cost reduction. The low tempering temperature reduces the risk of product deformation, thereby improving the stability of the product.

[0028] The arc punching lightweight SPC floor uses a lightweight base layer. When the arc punching forming process is carried out, since the lightweight base layer includes a non-solid layer with dense pores, the hardness and density of the lightweight base layer are low. The tempering temperature of the arc punching forming process only needs to be 60-80℃ to achieve overall softening and then punching to achieve the set arc punching effect, achieving the effect of reducing costs and increasing efficiency. The low tempering temperature reduces the risk of product deformation, thereby improving the stability of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0030] Figure 1 Schematic diagram of the structure of the arc punched lightweight SPC floor provided in the embodiment of this application Figure 1 ;

[0031] Figure 2 Schematic diagram of the structure of the arc punched lightweight SPC floor provided in the embodiment of this application Figure 2 ;

[0032] Figure 3 Schematic diagram of the splicing of arc punched lightweight SPC flooring provided in an embodiment of the present application.

[0033] icon:

[0034] 110 - protective layer; 120 - wear-resistant layer; 130 - printing layer; 140 - lightweight base layer; 141 - non-solid layer with dense pores; 142 - first solid layer; 143 - second solid layer;

[0035] 150 - first clamping portion; 151 - first protrusion; 152 - first groove; 153 - second protrusion; 160 - second clamping portion; 161 - third protrusion; 162 - fourth protrusion; 163 - second groove; 164 - fifth protrusion. DETAILED DESCRIPTION

[0036] To make the objectives, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all of the embodiments. Generally, the components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0037] In the description of this application, it should be noted that the terms "inner" and "outer" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or the orientations or positional relationships in which the product of this application is typically placed when in use. These terms are intended solely to facilitate the description of this application and simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first" and "second" and the like are used solely for distinction and should not be construed as indicating or implying relative importance.

[0038] It should also be noted that, in the description of this application, unless otherwise expressly specified or limited, the terms "disposed" and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to direct connections, indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0039] The existing arc SPC flooring molding process uses mechanical pressure, which can easily cause the color film on the arc edge to turn white, and the wear-resistant layer to crack or delaminate. To address this problem, the current method mainly uses tempering to 80°C-120°C to soften the entire surface before filling and molding. After cooling and shaping, the semi-finished product is obtained, and then slotting is performed to obtain the finished product. Due to the high tempering temperature, the cooling time is long, the cost is high, and the floor is easily deformed.

[0040] In view of this, the arc punched lightweight SPC floor provided by the embodiment of the present invention includes a protective layer 110, a wear-resistant layer 120, a printing layer 130 and a lightweight base layer 140; the protective layer 110, the wear-resistant layer 120, the printing layer 130 and the lightweight base layer 140 are stacked in sequence; the back of the lightweight base layer 140 is provided with a flat shading, and the lightweight base layer 140 includes a non-solid layer with dense pores 141; the density of the lightweight base layer 140 is set to 1.0-1.8g / cm 3 , the hardness is set to 60-75HD.

[0041] Specifically, see Table 1 below, which is a comparison table of production parameters and stability tests corresponding to lightweight base layers 140 with different parameters in arc punched lightweight SPC floors; wherein, stability is tested in accordance with ISO 23999 (Determination of dimensional stability and curling of resilient floor coverings after heating).

[0042]

[0043]

[0044] Table 1

[0045] In the tests numbered 1-3, the hardness, density, tempering temperature, and punching pressure of the lightweight base layer 140 were all the same. The holding time and punching depth were changed. According to the test results, the stability difference was very small. The results of the tests numbered 4-6, 7-9, and 10-13 were the same as above. In the tests numbered 9 and 10, the hardness and density of the lightweight base layer 140 changed, and the corresponding tempering temperature increased as the hardness and density of the lightweight base layer 140 increased. The tempering temperature of the test numbered 10 was not superior to the existing technology. Therefore, the density of the lightweight base layer 140 was set to 1.0-1.8g / cm 3 , the hardness is set to 60-75HD.

[0046] The arc punched lightweight SPC floor is composed of a protective layer 110, a wear-resistant layer 120, a printing layer 130 and a lightweight base layer 140 from top to bottom; the protective layer 110 can prevent ultraviolet rays from volatilizing the chemical substances in the board, increase the protective layer 110 can improve the scratch resistance, anti-pollution, antibacterial, anti-slip and other properties of the floor surface, and control the gloss and roughness of the floor surface; the wear-resistant layer 120 is wear-resistant and scratch-resistant, which extends the service life of the floor and can provide additional anti-slip protection under wet and slippery conditions, thereby increasing the safety of use; the protective layer 110, the wear-resistant layer 120, the printing layer 130 and the lightweight base layer 140 are fixedly connected by a continuous sheet substrate, The lightweight base layer 140 is produced by an extrusion process without glue and hot lamination. The printed layer 130 can be set to various wood grains, stone grains or carpet grains, and is a decorative layer that can meet the different needs of different occasions and tastes. The back of the lightweight base layer 140 is provided with a flat bottom texture to ensure uniform punching force. The lightweight base layer 140 includes a non-solid layer with dense pores 141, which makes its hardness lower than the hardness and density of the existing SPC floor substrate. The tempering temperature of the arc punching forming process is correspondingly lower than the temperature required for existing SPC floors, achieving a cost reduction effect. The low tempering temperature reduces the risk of product deformation, thereby improving product stability. The arc punching lightweight SPC floor uses a lightweight base layer 140. When the arc punching forming process is performed, since the lightweight base layer 140 includes a non-solid layer with dense pores 141, the hardness and density of the lightweight base layer 140 are low. The tempering temperature of the arc punching forming process only needs to be 60-80°C to achieve overall softening and then punching to achieve the set arc punching effect, thereby achieving the effect of reducing costs and increasing efficiency. The low tempering temperature reduces the risk of product deformation, thereby improving the stability of the product.

[0047] The following is a detailed description of the structure of the arc punched lightweight SPC floor:

[0048] In an optional solution of the embodiment of the present invention, the thickness of the lightweight base layer 140 is set to 7.0-10.0 mm.

[0049] Specifically, in this embodiment, the thickness of the lightweight base layer 140 is set to 8.0 mm. The punching and forming process includes extruding the lightweight SPC semi-finished product, tempering and heating, punching and forming, and cooling and curing.

[0050] The thickness of the lightweight base layer 140 is set to 6.0-12.0 mm, and has strong stability.

[0051] In an optional solution of the embodiment of the present invention, the protective layer 110, the wear-resistant layer 120, the printing layer 130 and the lightweight base layer 140 are fixedly connected in sequence.

[0052] Specifically, protective layer 110 is configured as a UV coating. Furthermore, the UC coating is a UV-curable coating primarily composed of oligomers, monomers, photoinitiators, and additives. Under the action of ultraviolet light, the components undergo cross-linking and polymerization, rapidly solidifying from a liquid state into a film with a three-dimensional network structure, thereby improving the surface properties of the paint film. Wear-resistant layer 120 is configured as a PVC wear-resistant layer. Furthermore, the PVC wear-resistant layer is composed of PVC resin, plasticizer DOTP, stabilizers, and additives. The protective layer 110, wear-resistant layer 120, printed layer 130, and lightweight base layer 140 are fixedly connected by adhesive-free thermal lamination via an extrusion process onto a continuous sheet substrate.

[0053] See also Figure 1 The protective layer 110, the wear-resistant layer 120, the printing layer 130 and the lightweight base layer 140 are fixedly connected in sequence to form an arc punched lightweight SPC floor.

[0054] In an optional solution of the embodiment of the present invention, the lightweight base layer 140 includes a first solid layer 142 and a second solid layer 143, and the first solid layer 142 and the second solid layer 143 are respectively located on the upper and lower sides of the non-solid belt dense pore layer 141, and are both fixedly connected to the non-solid belt dense pore layer 141; the density of the lightweight base layer 140 is set to 1.0-1.3g / cm 3 , the hardness is set to 65-70HD.

[0055] The density and hardness of the first solid layer 142 and the second solid layer 143 are the same or almost the same. The lightweight base layer 140 is a three-layer co-extrusion structure, with the upper and lower layers being solid layers and the middle layer being a non-solid layer with dense pores 141, with an overall density of 1.0-1.3 g / cm 3 , the overall hardness is 65-70HD. Preferably, the overall density is 1.2m 3 Furthermore, the arc punched lightweight SPC floor made of this lightweight base layer 140 has a tempering temperature of 70°C, a punching pressure of 14-18 MPA, and a punching time of 15-20s. By adding a foaming agent to the production raw materials, that is, by a chemical method in the extrusion stage, it can be achieved that the lightweight base layer 140 includes a first solid layer 142, a second solid layer 143 and a non-solid layer with dense pores 141, and the overall density is 1.0-1.3 g / cm 3 , the overall hardness is 65-70HD.

[0056] As another embodiment, the lightweight base layer 140 includes a third solid layer and a fourth solid layer, which are respectively located on the upper and lower sides of the non-solid belt dense pore layer 141 and are both fixedly connected to the non-solid belt dense pore layer 141; the density of the lightweight base layer 140 is set to 1.3-1.6g / cm 3, the hardness is set to 70-75HD.

[0057] The density and hardness of the third solid layer and the fourth solid layer are the same or almost the same. The lightweight base layer 140 is a three-layer co-extrusion structure, with the upper and lower layers being solid layers and the middle layer being a non-solid layer with dense pores 141, with an overall density of 1.3-1.6g / cm 3 , the overall hardness is 70-75HD. Preferably, the overall density is 1.5m 3 Furthermore, the arc punched lightweight SPC floor made of this lightweight base layer 140 has a tempering temperature of 75°C, a punching pressure of 16-20 MPA, and a punching time of 20-25 seconds. By adding a foaming agent to the production raw materials, that is, by a chemical method in the extrusion stage, it can be achieved that the lightweight base layer 140 includes a third solid layer, a fourth solid layer and a non-solid layer with dense pores 141, and the overall density is 1.3-1.6 g / cm 3 , the overall hardness is 70-75HD.

[0058] In an optional solution of the embodiment of the present invention, the lightweight base layer 140 includes a first crust layer and a second crust layer, which are respectively located on the upper and lower sides of the non-solid belt dense pore layer 141 and are both fixedly connected to the non-solid belt dense pore layer 141; the density of the lightweight base layer 140 is set to 1.6-1.8g / cm 3 , the hardness is set to 60-65HD.

[0059] The density and hardness of the first crust layer and the second crust layer are the same or almost the same. The lightweight base layer 140 is a single-layer structure, with the upper and lower layers being crust layers and the core layer being a non-solid layer with dense pores 141, with an overall density of 1.6-1.8 g / cm 3 The overall hardness is 60-65HD. The difference between the crust layer and the solid layer is that the thickness of the crust layer is smaller than that of the solid layer. Preferably, the overall density is 1.7g / cm 3 Furthermore, the arc punched lightweight SPC floor made of this lightweight base layer 140 has a tempering temperature of 65°C, a punching pressure of 12-14 MPA, and a punching time of 10-15 seconds. By adding a foaming agent to the production raw materials, that is, by a chemical method in the extrusion stage, it can be achieved that the lightweight base layer 140 includes a first crust layer, a second crust layer and a non-solid belt dense pore layer 141, and the overall density is 1.6-1.8 g / cm 3 , the overall hardness is 60-65HD.

[0060] In an optional solution of the embodiment of the present invention, the thickness of the wear-resistant layer 120 is set to 0.3-0.7 mm.

[0061] Specifically, in this embodiment, the thickness of the wear-resistant layer 120 is set to 0.5-0.7 mm to enhance the wear-resistant effect and extend the service life of the floor.

[0062] In an optional solution of the embodiment of the present invention, the tempering temperature of the arc punched lightweight SPC floor is set to 60-80°C, the punching pressure is set to 12-20MPA, the punching time is set to 10-25s, and the cooling curing temperature is set to 23-28°C.

[0063] Specifically, the tempering temperature is 60-80°C; the density of the lightweight base layer 140 is 1.0-1.3 g / cm 3 The heating temperature is 70℃; the density of the lightweight base layer 140 is 1.3-1.6g / cm 3 The heating temperature is 75℃; the density of the lightweight base layer 140 is 1.6-1.8g / cm 3 The heating temperature is 65℃; the punching pressure is 12MPA-20MPA; the punching time is 10-25S; the density of the lightweight base layer 140 is 1.0-1.3g / cm 3 The punching pressure is 14-18 MPA, and the preferred punching time is 15-20 s; the density of the lightweight base layer 140 is 1.3-1.6 g / cm 3 The punching pressure is 16-20 MPA, and the preferred punching time is 20-25 s; the density of the lightweight base layer 140 is 1.6-1.8 g / cm 3 The punching pressure is 12-14 MPA, and the preferred punching time is 10-15S; the cooling curing conditions are temperature 23-28°C, humidity 45-65%, and time 8-24 hours; preferably temperature 25°C, humidity 50%, and time 12 hours.

[0064] In an optional solution of an embodiment of the present invention, the first side wall of the arc-cut lightweight SPC floor is provided with a first clamping portion 150, and the second side wall is provided with a second clamping portion 160. The first clamping portions 150 and the second clamping portions 160 adjacent to each other in two adjacent arc-cut lightweight SPC floors are clamped; the first side wall and the second side wall are arranged opposite to each other.

[0065] The first clamping portion 150 and the second clamping portion 160 adjacent to each other in two adjacent arc-cut lightweight SPC floors are clamped together, which facilitates the installation of the arc-cut lightweight SPC floors.

[0066] In an optional scheme of an embodiment of the present utility model, the first clamping portion 150 includes a first protrusion 151, the bottom wall of the first protrusion 151 is provided with a first groove 152, and the side wall is provided with a second protrusion 153; the second clamping portion 160 includes a third protrusion 161 and a fourth protrusion 162, the third protrusion 161 and the fourth protrusion 162 are spaced apart in the vertical direction to form a second groove 163 therebetween, and the top wall of the fourth protrusion 162 is provided with a fifth protrusion 164; the first protrusion 151 abuts against the third protrusion 161, the second protrusion 153 is inserted into the second groove 163, and the fifth protrusion 164 is inserted into the first groove 152.

[0067] Specifically, the vertical direction refers to the thickness direction of the arc punching lightweight SPC floor.

[0068] See also Figure 2 and Figure 3 The first protrusion 151 abuts against the third protrusion 161, the second protrusion 153 is inserted into the second groove 163, and the fifth protrusion 164 is inserted into the first groove 152, so as to realize the clamping of the first clamping portion 150 and the second clamping portion 160 adjacent to each other in the two adjacent arc-cut lightweight SPC floors.

[0069] In an optional solution of the embodiment of the present invention, the top wall of the first protrusion 151 is set to be arc-shaped, and the top wall of the third protrusion 161 is set to be arc-shaped; the arc direction of the top wall of the first protrusion 151 is opposite to the arc direction of the top wall of the third protrusion 161.

[0070] Specifically, see Figure 3 The arc direction of the top wall of the first protrusion 151 is opposite to the arc direction of the top wall of the third protrusion 161, so that the two adjacent arc-cut lightweight SPC floors are beautiful after assembly.

[0071] It should be noted that, unless there is any conflict, the features in the embodiments of this application can be combined with each other.

[0072] The above description is merely a preferred embodiment of the present application and is not intended to limit the present application. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A circular arc punched lightweight SPC floor, characterized in that: It comprises a protective layer (110), a wear-resistant layer (120), a printing layer (130) and a lightweight base layer (140); The protective layer (110), the wear-resistant layer (120), the printing layer (130) and the lightweight base layer (140) are stacked in sequence; The back of the lightweight base layer (140) is provided with a plane shading, and the lightweight base layer (140) includes a non-solid layer (141) with dense pores; The density of the lightweight base layer (140) is set to 1.0-1.8 g / cm 3 , the hardness is set to 60-75HD.

2. The arc punched lightweight SPC floor according to claim 1, characterized in that: The thickness of the lightweight base layer (140) is set to 6.0-12.0 mm.

3. The arc punched lightweight SPC floor according to claim 2, characterized in that: The protective layer (110), the wear-resistant layer (120), the printing layer (130) and the lightweight base layer (140) are fixedly connected in sequence.

4. The arc punched lightweight SPC floor according to claim 3, characterized in that: The lightweight base layer (140) comprises a first solid layer (142) and a second solid layer (143), wherein the first solid layer (142) and the second solid layer (143) are respectively located on the upper and lower sides of the non-solid layer with dense pores (141), and are both fixedly connected to the non-solid layer with dense pores (141); The density of the lightweight base layer (140) is set to 1.0-1.3 g / cm 3 , the hardness is set to 65-70HD.

5. The arc punched lightweight SPC floor according to claim 3, characterized in that: The lightweight base layer (140) comprises a third solid layer and a fourth solid layer, wherein the third solid layer and the fourth solid layer are respectively located on the upper and lower sides of the non-solid layer with dense pores (141), and are both fixedly connected to the non-solid layer with dense pores (141); The density of the lightweight base layer (140) is set to 1.3-1.6 g / cm 3 , the hardness is set to 70-75HD.

6. The arc punched lightweight SPC floor according to claim 3, characterized in that: The lightweight base layer (140) comprises a first crust layer and a second crust layer, wherein the first crust layer and the second crust layer are respectively located on the upper and lower sides of the non-solid belt dense pore layer (141), and are both fixedly connected to the non-solid belt dense pore layer (141); The density of the lightweight base layer (140) is set to 1.6-1.8 g / cm3, and the hardness is set to 60-65 HD.

7. The arc punched lightweight SPC floor according to claim 3, characterized in that: The thickness of the wear-resistant layer (120) is set to 0.3-0.7 mm.

8. The arc punched lightweight SPC floor according to claim 1, characterized in that: The first side wall of the arc punched lightweight SPC floor is provided with a first clamping portion (150), and the second side wall is provided with a second clamping portion (160), and the first clamping portion (150) and the second clamping portion (160) adjacent to each other in two adjacent arc punched lightweight SPC floors are clamped together; The first side wall is arranged opposite to the second side wall.

9. The arc punched lightweight SPC floor according to claim 8, characterized in that: The first clamping portion (150) comprises a first protrusion (151), a bottom wall of the first protrusion (151) is provided with a first groove (152), and a side wall thereof is provided with a second protrusion (153); The second clamping portion (160) includes a third protrusion (161) and a fourth protrusion (162), the third protrusion (161) and the fourth protrusion (162) are spaced apart in a vertical direction, and a second groove (163) is formed therebetween, and a fifth protrusion (164) is provided on the top wall of the fourth protrusion (162); The first protrusion (151) abuts against the third protrusion (161), the second protrusion (153) is inserted into the second groove (163), and the fifth protrusion (164) is inserted into the first groove (152).

10. The arc punched lightweight SPC floor according to claim 9, characterized in that: The top wall of the first protrusion (151) is configured to be arc-shaped, and the top wall of the third protrusion (161) is configured to be arc-shaped; The arc-shaped direction of the top wall of the first protrusion (151) is opposite to the arc-shaped direction of the top wall of the third protrusion (161).

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