EB cured polypropylene floor

Abstract

The utility model provides an EB curing polypropylene floor, and relates to the field of ground pavement building materials, the EB curing polypropylene floor comprises a floor main body, the floor main body comprises an EB curing layer, a polypropylene decoration layer, a polypropylene base material layer, a polypropylene balance layer and a mute layer, the polypropylene base material layer is provided with a first butt-joint side face and a second butt-joint side face which are oppositely arranged, one of the first butt-joint side face and the second butt-joint side face is provided with a first concave-convex structure, and the other one of the first butt-joint side face and the second butt-joint side face is provided with a second concave-convex structure; the adjacent floor bodies are in butt joint through the first concave-convex structures and the second concave-convex structures. When the floor is processed at least, due to the adoption of the EB curing layer, the curing speed can be increased, the processing and manufacturing efficiency is improved, and the processing and manufacturing cost is reduced; no volatile matter is generated, and environmental protection and sanitation are achieved.

Description

Technical Field

[0001] The utility model relates to the field of ground paving building materials, in particular to an EB-cured polypropylene floor. Background Art

[0002] PVC floor is a very popular floor decoration material, but it contains chlorine and plasticizers, and it will produce highly toxic dioxins during combustion. As people pay more attention to health and environmental protection issues, the sales market of PVC floor is limited to a certain extent. Polypropylene floor does not contain PVC and does not need to add plasticizers. It makes up for the shortcomings of PVC floor with its low toxicity, low smoke and environmental protection. Polypropylene floor is mainly composed of UV layer, wear-resistant layer, decorative layer and polypropylene substrate layer, among which the wear-resistant layer, decorative layer and polypropylene substrate layer are hot-pressed and then coated with UV transparent layer. However, UV paint has the following disadvantages in actual use: after the top layer of UV paint is rolled on the polypropylene floor, the surface of the decorative film is not natural enough, and it cannot present a natural and full surface pattern, texture and texture; in addition, UV lamps are expensive, and the depreciation rate is large during the actual production process, and the service life is not long.

[0003] The inventor has found that the existing UV floor has at least the following disadvantages:

[0004] The curing speed is slow, volatile substances are easily generated, the environmental protection effect is poor and the cost is high. Utility Model Content

[0005] The utility model aims to provide an EB-cured polypropylene floor, which can increase the curing speed, improve the processing and manufacturing efficiency, and reduce the processing and manufacturing cost; and does not generate volatile matter, and is environmentally friendly and hygienic.

[0006] The embodiment of the utility model is achieved as follows:

[0007] In a first aspect, the utility model provides an EB-cured polypropylene floor, comprising:

[0008] A floor body, the floor body comprising an EB cured layer, a polypropylene decorative layer, a polypropylene base material layer, a polypropylene balancing layer and a mute layer which are stacked in sequence, the polypropylene base material layer having a first butt joint side surface and a second butt joint side surface which are oppositely arranged, one of the first butt joint side surface and the second butt joint side surface is provided with a first concavo-convex structure, and the other of the first butt joint side surface and the second butt joint side surface is provided with a second concavo-convex structure;

[0009] The adjacent floor bodies are butted against each other via the first concave-convex structure and the second concave-convex structure.

[0010] In an optional embodiment, the first concave-convex structure includes a docking protrusion convexly provided on the first docking side surface, and correspondingly, the second concave-convex structure includes a docking groove convexly provided on the second docking side surface.

[0011] Based on the above scheme, the structures of the first concave-convex structure and the second concave-convex structure are simple, and the docking protrusions and the docking grooves are plugged into each other, the assembly method is simple, the operation difficulty is low, the assembly efficiency is high, the assembly cost is low, and the overall assembly quality is high, which can extend the service life of the floor body.

[0012] In an optional embodiment, the docking protrusion has a top surface and a bottom surface that are spaced apart in the thickness direction of the floor main body, and both the top surface and the bottom surface are configured to be in a curved transition with the first docking side surface.

[0013] Based on the above scheme, the connecting surface between the docking protrusion and the first docking side surface is an arc transition. Firstly, it can reduce the stress concentration at the connecting position between the docking protrusion and the first docking side surface, making it less likely to crack or break at the connecting position, thereby extending the service life; secondly, it can increase the contact area when adjacent floor bodies are docked, thereby improving the firmness of the connection.

[0014] In an optional embodiment, the docking groove has a top groove wall and a bottom groove wall arranged at intervals in the thickness direction of the floor body, and both the top groove wall and the bottom groove wall are configured to form a curved surface transition with the second docking side surface.

[0015] Based on the above solution, the connection position between the butt joint groove and the second butt joint side surface is not prone to stress concentration and cracking, which is conducive to processing and manufacturing. In addition, by setting the arc transition, the contact area when adjacent floor bodies are butt jointed can be increased, thereby improving the structural strength of the adjacent floor bodies being butt jointed.

[0016] In an optional embodiment, the distance between the outer side surface of the docking protrusion away from the first docking surface and the first docking side surface is L1, and the distance between the groove bottom wall of the docking groove and the second docking surface is L2, and L1 is smaller than L2.

[0017] Based on the above scheme, when adjacent floor bodies are docked, since the length of the docking protrusion is smaller than the length of the docking groove, when adjacent floor bodies are docked, the top surfaces of the adjacent floor bodies will definitely abut against the docking protrusion and the docking groove first, that is, it is not easy for the docking protrusion and the docking groove to dock, resulting in the top surfaces of the adjacent floor bodies being unable to dock, and it is not easy to over-position, which can improve the assembly quality.

[0018] In an optional embodiment, the difference between L1 and L2 is 0.3-0.6 mm.

[0019] Based on the above solution, the bonding firmness can be improved while avoiding over-positioning.

[0020] In an optional embodiment, a flexible docking layer is provided on one of the outer side surface and the groove bottom wall, a first magnet is provided on the side of the flexible docking layer away from the outer side surface or the groove bottom wall, and a second magnet is provided on the other of the outer side surface and the groove bottom wall, and the first magnet and the second magnet are used for magnetic adsorption connection when adjacent floor bodies are docked.

[0021] Based on the above solution, the first magnet and the second magnet can be film magnets, which are thin, occupy a small space, and are easy to install. After the adjacent floor bodies are docked, the docking protrusions and the docking grooves are plugged and matched, and the first magnet and the second magnet are mutually adsorbed, thereby improving the firmness of the adjacent floor bodies.

[0022] In an optional embodiment, the thickness of the EB cured layer is set at 0.3-0.35 mm.

[0023] Based on the above scheme, the thickness of the EB cured layer is reasonable, which is conducive to processing and manufacturing, and is conducive to improving product quality while reducing product costs.

[0024] In an optional embodiment, the thickness of the polypropylene substrate layer is set at 10-11 mm.

[0025] Based on the above scheme, the thickness of the polypropylene substrate layer is reasonable, which is conducive to processing and manufacturing, and is conducive to improving product quality while reducing product costs.

[0026] In an optional embodiment, the sound-proof layer is configured as a foamed polypropylene layer without inorganic fillers.

[0027] Based on the above solution, the structure of the sound-proof layer is simple, easy to process and manufacture, and has low cost.

[0028] The beneficial effects of the embodiments of the utility model are:

[0029] In summary, the EB-cured polypropylene floor provided in this embodiment is improved from a UV-cured layer to an EB-cured layer on the surface of the floor body. During the processing and manufacturing process, the EB coating of the EB-cured layer is cured at room temperature under the action of an electron beam, and the coating has a short curing time. It is faster than UV curing and reduces the impact on the appearance of the decorative layer. At the same time, EB curing does not require a photoinitiator and can directly react with the resin, making the formula safer and more environmentally friendly. EB curing can also reduce the emission of carbon dioxide and VOCs. In summary, adding an EB-cured layer to the surface of the floor body can not only give the polypropylene decorative film surface scratch resistance, wear resistance, and stain resistance, but also overcome the problem of yellowing and fading of the floor after exposure to light, and has excellent weather resistance and durability. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model 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 paying creative work.

[0031] Figure 1 This is a schematic structural diagram of an EB-cured polypropylene floor according to an embodiment of the present utility model;

[0032] Figure 2 It is a schematic structural diagram of the polypropylene substrate layer of an embodiment of the utility model.

[0033] icon:

[0034] 100 - floor body; 110 - EB curing layer; 120 - polypropylene decorative layer; 130 - polypropylene base material layer; 140 - polypropylene balancing layer; 150 - soundproof layer; 160 - first docking side; 170 - second docking side; 180 - first concave-convex structure; 190 - second concave-convex structure. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0036] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. 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.

[0037] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0038] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply 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 utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0039] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0040] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] At present, the UV curing layer is set on the floor surface. During the manufacturing process, after the UV paint is rolled on the floor surface, the surface of the decorative film is not natural enough and cannot present a natural and full surface pattern, texture and texture. In addition, UV lamps are expensive, have a high depreciation rate in the actual production process, and have a short service life, which leads to an increase in the cost of floor processing and preparation.

[0042] Please combine Figure 1-Figure 2 In view of this, the designer provides an EB-cured polypropylene floor, which uses an EB-cured layer 110 to replace the UV-cured layer, which can reduce the curing cost and improve the curing quality, thereby improving the processing quality of the floor.

[0043] In this embodiment, the EB-cured polypropylene floor includes a floor body 100, which includes an EB-cured layer, a polypropylene decorative layer 120, a polypropylene substrate layer 130, a polypropylene balancing layer 140 and a sound-proof layer 150 stacked in sequence, and the polypropylene substrate layer 130 has a first docking side surface 160 and a second docking side surface 170 that are arranged opposite to each other. A first concave-convex structure 180 is provided on one of the first docking side surface 160 and the second docking side surface 170, and a second concave-convex structure 190 is provided on the other of the first docking side surface 160 and the second docking side surface 170; adjacent floor bodies 100 are docked via the first concave-convex structure 180 and the second concave-convex structure 190.

[0044] Based on the above, the EB cured polypropylene floor provided in this embodiment has at least the following advantages:

[0045] By improving the surface layer of the floor body 100 from a UV curing layer to an EB curing layer 110, during the processing and manufacturing process, the EB coating of the EB curing layer 110 is cured at room temperature under the action of an electron beam, and the coating has a short curing time. It is faster than UV curing and reduces the impact on the appearance of the decorative layer. At the same time, EB curing does not require a photoinitiator and can directly react with the resin, making the formula safer and more environmentally friendly. EB curing can also reduce the emission of carbon dioxide and VOCs. In summary, adding an EB curing layer to the surface of the floor body 100 can not only give the surface of the polypropylene decorative film scratch resistance, wear resistance, and stain resistance, but also overcome the problem of yellowing and fading of the floor after exposure to light, and has excellent weather resistance and durability.

[0046] The following examples illustrate the details of the EB-cured polypropylene floor provided in the present application by way of examples.

[0047] It should be noted that the floor body 100 may be a rectangular plate, and the first butting side surface 160 and the second butting side surface 170 are two side surfaces arranged parallel to each other and spaced apart. In order to improve the splicing firmness of the floor body 100, a mortise and tenon structure that matches each other may be provided on the other two opposite side surfaces of the floor body 100. In this embodiment, a pair of matching first butting side surfaces 160 and second butting side surfaces 170 are taken as an example for description.

[0048] In this embodiment, optionally, the first concave-convex structure 180 includes a docking protrusion convexly provided on the first docking side surface 160, and correspondingly, the second concave-convex structure 190 includes a docking groove convexly provided on the second docking side surface 170. The first concave-convex structure 180 and the second concave-convex structure 190 have simple structures, and the docking protrusion and the docking groove are plugged and matched, the assembly method is simple, the operation difficulty is low, the assembly efficiency is high, the assembly cost is low, and the overall assembly quality is high, which can extend the service life of the floor body 100.

[0049] Furthermore, the docking protrusion has a top surface and a bottom surface arranged at intervals in the thickness direction of the floor body 100, and both the top surface and the bottom surface are set to be an arc surface transition with the first docking side surface 160; correspondingly, the docking groove has a top groove wall and a bottom groove wall arranged at intervals in the thickness direction of the floor body 100, and both the top groove wall and the bottom groove wall are set to be an arc surface transition with the second docking side surface 170.

[0050] With such a design, the connection surface between the butt protrusion and the first butt side surface 160 is a camber transition, which can reduce the stress concentration at the connection position between the butt protrusion and the first butt side surface 160, and is not easy to crack or break at the connection position, thereby extending the service life; secondly, it can increase the contact area when the adjacent floor bodies 100 are butt-jointed, thereby improving the firmness of the connection. Similarly, the connection position between the butt groove and the second butt side surface 170 is not easy to generate stress concentration, is not easy to crack, and is conducive to processing and manufacturing. In addition, by setting a camber transition, the contact area when the adjacent floor bodies 100 are butt-jointed can be increased, thereby improving the structural strength of the butt joint of the adjacent floor bodies 100.

[0051] During the actual assembly process, the connection surface between the docking protrusion and the first docking side surface 160 fits with the connection surface between the docking groove and the second docking protrusion, thereby improving the tightness of the combination.

[0052] In addition, the distance between the outer side surface of the docking protrusion away from the first docking surface and the first docking side surface 160 is L1, that is, the height of the docking protrusion protruding from the first docking side surface 160 is L1. The distance between the bottom wall of the docking groove and the second docking surface is L2, that is, the groove depth of the docking groove is L2, wherein L1 is smaller than L2.

[0053] When adjacent floor bodies 100 are docked, since the length of the docking protrusion is smaller than the length of the docking groove, when adjacent floor bodies 100 are docked, the top surfaces of the adjacent floor bodies 100 will definitely abut against the docking protrusion and the docking groove first, that is, it is not easy for the docking protrusion and the docking groove to dock, resulting in the top surfaces of the adjacent floor bodies 100 being unable to dock, and it is not easy to over-position, which can improve the assembly quality.

[0054] For example, in one embodiment, the difference between L1 and L2 is 0.3-0.6 mm. Under the premise of avoiding over-positioning, the bonding firmness can be improved. It should be understood that the difference between L1 and L2 can be 0.3 mm, 0.45 mm or 0.6 mm, etc.

[0055] In other embodiments, optionally, a flexible docking layer is provided on one of the outer side surface and the groove bottom wall, a first magnet is provided on the side of the flexible docking layer away from the outer side surface or the groove bottom wall, and a second magnet is provided on the other of the outer side surface and the groove bottom wall, and the first magnet and the second magnet are used for magnetic adsorption connection when adjacent floor bodies 100 are docked.

[0056] With such a design, when the first docking protrusion and the first docking groove are plugged in, even if the size of the first docking protrusion is equal to or slightly larger than the depth of the docking groove due to manufacturing errors, the design of the flexible docking layer can cause the flexible docking layer to be squeezed and deformed during the plugging, thereby compensating for the manufacturing errors and ensuring that the surfaces of adjacent floor bodies 100 can be better docked together. In addition, the first magnet and the second magnet can be film magnets, which have a small thickness and occupy a small space, which is convenient for installation. After the adjacent floor bodies 100 are docked, the docking protrusion and the docking groove are plugged in, and the first magnet and the second magnet are attracted to each other, thereby improving the firmness of the combination of the adjacent floor bodies 100.

[0057] Optionally, the thickness of the EB curing layer 110 is set at 0.3-0.35 mm. The thickness of the EB curing layer 110 is reasonable, which is conducive to processing and manufacturing, and is conducive to improving product quality while reducing product costs. For example, the thickness of the EB curing layer 110 can be 0.3 mm, 0.32 mm or 0.35 mm.

[0058] Optionally, the thickness of the polypropylene substrate layer 130 is set at 10-11 mm. The thickness of the polypropylene substrate layer 130 is reasonable, which is conducive to processing and manufacturing, and is conducive to improving product quality while reducing product costs. It should be understood that the thickness of the polypropylene substrate layer 130 can be 10 mm, 10.5 mm or 11 mm, etc.

[0059] Optionally, the sound-proof layer 150 is configured as a foamed polypropylene layer without inorganic fillers.

[0060] With such a design, the sound-proof layer 150 has a simple structure, is easy to manufacture, has a low cost, has a large foaming ratio, and has a low density, and can achieve good impact cushioning and noise reduction effects.

[0061] In addition, the EB curing layer is a resin coating coated on the surface of the polypropylene decorative layer 120. Through electron beam irradiation, the high-energy electron beam generated by the electron accelerator is used to induce resin polymerization or cross-linking curing, so that a strong resin layer is instantly formed on the surface of the polypropylene decorative layer 120, thereby obtaining good surface properties such as scratch resistance, wear resistance, stain resistance, and weather resistance.

[0062] The polypropylene decorative layer 120 is made of high molecular weight polymer polypropylene as raw material, various additives are added, and maleic anhydride (MAH) is used to graft and modify polypropylene, and then calendered and compounded, and a specific pattern is printed to make a polypropylene decorative film with a real texture, which has excellent visual effects and physical and chemical properties. The surface wear resistance, texture three-dimensional effect, and ink adhesion of the polypropylene decorative layer 120 modified with maleic anhydride are effectively improved.

[0063] The polypropylene substrate layer 130 is a polypropylene resin filled with a certain amount of stone powder, mainly including 25-45% polypropylene, 50-70% filler, and 2-10% other additives.

[0064] The polypropylene balancing layer 140 can improve the thermal warpage of the product, enhance the dimensional stability of the product, and increase the service life of the product by adjusting the stone powder content and the thickness of the balancing layer. The polypropylene resin accounts for 15-45% and the inorganic filler accounts for 50-75%.

[0065] The EB-cured polypropylene floor provided in this embodiment has a simple structure, is easy to process and manufacture, and has low cost.

[0066] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An EB cured polypropylene floor, characterized in that: include: A floor body, the floor body comprising an EB cured layer, a polypropylene decorative layer, a polypropylene base material layer, a polypropylene balancing layer and a mute layer which are stacked in sequence, the polypropylene base material layer having a first butt joint side surface and a second butt joint side surface which are oppositely arranged, one of the first butt joint side surface and the second butt joint side surface is provided with a first concavo-convex structure, and the other of the first butt joint side surface and the second butt joint side surface is provided with a second concavo-convex structure; The adjacent floor bodies are butted against each other via the first concave-convex structure and the second concave-convex structure.

2. The EB cured polypropylene floor according to claim 1, characterized in that: The first concave-convex structure includes a docking protrusion convexly arranged on the first docking side surface, and correspondingly, the second concave-convex structure includes a docking groove convexly arranged on the second docking side surface.

3. The EB cured polypropylene floor according to claim 2, characterized in that: The butt joint protrusion has a top surface and a bottom surface which are arranged at intervals in the thickness direction of the floor main body, and both the top surface and the bottom surface are configured to form a curved surface transition with the first butt joint side surface.

4. The EB-cured polypropylene floor according to claim 3, characterized in that: The docking groove has a top groove wall and a bottom groove wall arranged at intervals in the thickness direction of the floor main body, and both the top groove wall and the bottom groove wall are configured to form a curved surface transition with the second docking side surface.

5. The EB-cured polypropylene floor according to any one of claims 2 to 4, characterized in that: The distance between the outer side surface of the docking protrusion away from the first docking side surface and the first docking side surface is L1, and the distance between the groove bottom wall of the docking groove and the second docking side surface is L2, and L1 is smaller than L2.

6. The EB-cured polypropylene floor according to claim 5, characterized in that: The difference between L1 and L2 is 0.3-0.6 mm.

7. The EB-cured polypropylene floor according to claim 5, characterized in that: A flexible docking layer is arranged on one of the outer side surface and the groove bottom wall, a first magnet is arranged on the side of the flexible docking layer away from the outer side surface or the groove bottom wall, and a second magnet is arranged on the other of the outer side surface and the groove bottom wall, and the first magnet and the second magnet are used for magnetic adsorption connection when adjacent floor bodies are docked.

8. The EB-cured polypropylene floor according to claim 1, characterized in that: The thickness of the EB cured layer is set at 0.3-0.35 mm.

9. The EB-cured polypropylene floor according to claim 1, characterized in that: The thickness of the polypropylene substrate layer is set at 10-11 mm.

10. The EB-cured polypropylene floor according to claim 1, characterized in that: The sound-proof layer is a foamed polypropylene layer containing no inorganic filler.

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