LVT composite floor

Abstract

The LVT composite floor comprises a surface layer, a base material and a bottom layer which are sequentially compounded, the surface layer comprises an LVT base layer, a color film layer and a wear-resistant layer which are sequentially compounded; the base material comprises a surface plate, a core plate and a back plate which are compounded in sequence; the bottom layer is an LVT substrate; the LVT base layer of the surface layer is attached to the surface plate of the base material, and the back plate of the base material is attached to the bottom layer. According to the LVT composite floor, the wood plate and the LVT plate are combined, and the LVT composite floor has the advantages of being small in thickness, good in moisture-proof and waterproof performance and elasticity and good in size stability.

Description

Technical Field

[0001] The utility model relates to the technical field of floors, in particular to an LVT composite floor. Background Art

[0002] The wooden floors on the market are mainly divided into three categories: solid wood composite floors, laminate floors and solid wood floors. The non-wooden floors mainly include SPC floors, WPC floors, LVT floors, etc. Generally, the thickness of wooden floors is between 8 mm and 18 mm, and there are few floors with a thickness less than 8 mm. The overall elasticity is average, and they are prone to dry shrinkage and wet swelling in dry or humid environments for a long time. Generally, non-wooden floors can be made with a thickness below 8 mm, and they are moisture-proof and waterproof. For example, LVT floors also have excellent elasticity, but their dimensional stability is not good. At present, there is no floor on the market that combines wood boards with LVT and has the characteristics of a relatively thin thickness, good moisture-proof and waterproof performance, excellent elasticity, and good dimensional stability. Summary of the Utility Model

[0003] In order to solve the above technical problems, the purpose of the utility model is to provide an LVT composite floor, which combines a wood board with an LVT base and has the characteristics of a relatively thin thickness, good moisture-proof and waterproof performance, excellent elasticity, and good dimensional stability.

[0004] To achieve the above technical purpose and reach the above technical effect, the utility model is realized through the following technical solutions:

[0005] An LVT composite floor includes a surface layer, a base material and a bottom layer which are sequentially laminated; the surface layer includes an LVT base layer, a color film layer and a wear-resistant layer which are sequentially laminated; the base material includes a surface board, a core board and a back board which are sequentially laminated; the bottom layer is an LVT base; the LVT base layer of the surface layer is attached to the surface board of the base material, and the back board of the base material is attached to the bottom layer.

[0006] Further, in the base material, the surface board and the back board are wood veneers with a thickness of 0.35 - 0.8 mm, the core board is two layers of thin veneers or a single layer of thick veneer, the thickness of the thin veneer is 1.0 - 2.2 mm, and the thickness of the thick veneer is 4.0 mm.

[0007] Further, the wear-resistant layer is a PVC film layer; the thickness of the wear-resistant layer is 0.2 - 0.5 mm.

[0008] Further, the surface of the wear-resistant layer is coated with scratch-resistant paint.

[0009] Further, the thickness of the color film layer in the surface layer is 0.1 - 0.2 mm.

[0010] Further, the color film layer is a PVC transparent film, and its surface is printed with textures.

[0011] Further, the thickness of the LVT base layer of the surface layer and the LVT base of the bottom layer is 0.7 - 1.0 mm.

[0012] Further, the surface layer, the base material, and the bottom layer are compounded by hot-pressing adhesive.

[0013] Further, the thickness of this LVT composite floor is less than 8 mm.

[0014] The beneficial effects of the present utility model are as follows:

[0015] The LVT composite floor of the present utility model includes a surface layer, a base material, and a bottom layer that are compounded in sequence; the surface layer includes an LVT base layer, a color film layer, and a wear-resistant layer that are compounded in sequence; the base material includes a surface board, a core board, and a back board that are compounded in sequence; the bottom layer is an LVT base. The floor of the present utility model composites the wooden base material with the LVT board, uses the wooden base material as the central support of the floor, improves the dimensional stability of the composite floor, and arranges LVT materials on both sides of the base material, improving the elasticity, moisture-proof and waterproof performance of the composite floor; at the same time, the composite floor of the present utility model has a relatively thin thickness, meeting the thickness requirements of the market for thin floors. Description of the Drawings

[0016] Figure 1 It is a schematic structural diagram of the LVT composite floor of Embodiment 1 of the present utility model.

[0017] Figure 2 It is a schematic structural diagram of the LVT composite floor of Embodiment 2 of the present utility model. Detailed Embodiments

[0018] The technical solutions in the present utility model will be clearly and completely described below in conjunction with specific embodiments. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0019] The present utility model provides an LVT composite floor, which includes a surface layer 1, a base material 2, and a bottom layer 3 that are compounded in sequence; the surface layer 1 includes an LVT base layer 11, a color film layer 12, and a wear-resistant layer 13 that are compounded in sequence; the base material 2 includes a surface board 21, a core board 22, and a back board 23 that are compounded in sequence; the bottom layer 3 is an LVT base; the LVT base layer 11 of the surface layer is attached to the surface board 21 of the base material 2, and the back board 23 of the base material 2 is attached to the bottom layer 3.

[0020] In the base material 2, the surface board 21 and the back board 23 are veneers with a thickness of 0.35 - 0.8 mm, and the tree species of the veneers are selected from beech, birch, miscellaneous wood, etc.; the core board 22 is two layers of the same kind of thin veneers in the same direction, with the pine sides of the two thin veneers facing each other, or the core board 22 is a single-layer thick veneer; the thickness of the thin veneer is 1.0 - 2.2 mm, and the tree species of the thin veneer are selected from poplar, eucalyptus, pine, etc.; the thickness of the thick veneer is 4.0 mm, and the tree species of the thick veneer are selected from pine, spruce, paulownia, etc.

[0021] The wear-resistant layer 13 is a PVC film layer with a thickness of 0.2 - 0.5 mm; the surface of the wear-resistant layer 13 is coated with scratch-resistant paint, and two coats of scratch-resistant paint are used during coating, and the coating amount of the two coats is 16 - 20 g / m 2 。

[0022] The thickness of the color film layer 12 in the surface layer is 0.1 - 0.2 mm. The color film layer 12 is a PVC transparent film, and its surface is printed with a texture with a thickness of 0.02 - 0.05 mm.

[0023] The thicknesses of the LVT base layer 11 of the surface layer 1 and the LVT base of the bottom layer 3 are both 0.7 - 1.0 mm, and it is a high-grade vinyl floor material with a color of black.

[0024] During the production of the base material, the surface board 21, the core board 22, and the back board 23 are coated with glue and assembled into a blank, and the single-sided glue coating amount is 180 - 230 g / m 2 ,then cold-pressed for 30 - 60 min, and then hot-pressed into shape, with a hot-pressing temperature of 105 - 125 °C, a time of 6 - 10 min, and an actual unit pressure of 7 - 9 kg / cm 2 。

[0025] During the production of the surface layer 1, from top to bottom, there are a wear-resistant layer 13, a color film layer 12, and an LVT base layer 11. After the wear-resistant layer 13 is coated with two coats of paint, it is compounded with the color film layer 12 and the LVT base layer 11 together.

[0026] After the two sides of the base material 2 are coated with low-temperature hot-pressing glue, it is then compounded with the surface layer 1 and the bottom layer 3 to form a floor. The double-sided coating amount of the low-temperature hot-pressing glue is 300 - 400 g / m 2 ,cold-pressed for 30 - 45 min, with a pressure of 5 - 7 kg / cm 2 ,then hot-pressed, with a hot-pressing time of 6 - 10 min and a hot-pressing pressure of 7 - 9 kg / cm 2 ,and a hot-pressing temperature of 70 - 80 °C. The compounded floor is cooled to room temperature and then can be sliced. The compound floor is then made into a finished product through processes such as slicing, milling, applying chamfer paint, and waxing the tenon and groove.

[0027] The thickness of this LVT composite floor is less than 8 mm.

[0028] Example 1

[0029] The LVT composite floor of this Example 1 includes a surface layer 1, a base material 2, and a bottom layer 3 that are sequentially laminated; the surface layer 1 includes an LVT base layer 11, a color film layer 12, and a wear-resistant layer 13 that are sequentially laminated; the base material 2 includes a surface board 21, a core board 22, and a back board 23 that are sequentially laminated; the bottom layer 3 is an LVT base; the LVT base layer 11 of the surface layer 1 is adhered to the surface board 21 of the base material 2, and the back board 23 of the base material 2 is adhered to the bottom layer 3.

[0030] The preparation method of this LVT composite floor includes the following steps:

[0031] Step 1, preparation of the base material: Add flour to melamine-modified urea glue and stir evenly. The proportion of flour is 40-50%, and an adhesive is prepared. Stack two 2.2-mm-thick poplar veneers in the same direction (core board), with the loose sides facing each other and inward, and apply 180-230 g / m 2 of adhesive on one side, cold press for 30 min, and the pressure is 5 kg / cm 2 , then stick 0.5-mm-thick beech (surface board and back board) on the top and bottom. The beech texture is perpendicular to the poplar texture, cold press for 30 min, and the pressure is 5 kg / cm 2 . After laminating into a four-ply board, perform hot pressing. The hot pressing time is 10 min, the hot pressing pressure is 7 kg / cm 2 , and the hot pressing temperature is 105-115°C to obtain the base material for standby;

[0032] Step 2, laminating the base material with a 1.0-mm-thick surface layer and a 0.8-mm-thick bottom layer: Coat both sides of the four-ply board with low-temperature hot pressing glue, and the coating amount is 300 g / m 2 , after laminating with the surface layer and the bottom layer, cold press for 30 min, and the pressure is 5 kg / cm 2 , then perform hot pressing. The hot pressing time is 6 min, the hot pressing pressure is 7 kg / cm 2 , and the hot pressing temperature is 80°C to obtain a large board;

[0033] Step 3, cool the large board to room temperature and then it can be sliced;

[0034] Step 4, slicing: Slice the large board into six blanks;

[0035] Step 5, milling: Mill tenon grooves on the four sides of the blank;

[0036] Step 6, chamfer painting and wax sealing: Paint the chamfered surface of the board with water-based paint and seal the tenon grooves with wax;

[0037] Step 7: Pack and store in the warehouse.

[0038] Example 2

[0039] The LVT composite floor of this Example 2 includes a surface layer 1, a substrate 2, and a bottom layer 3 that are successively laminated; the surface layer 1 includes an LVT base layer 11, a color film layer 12, and a wear-resistant layer 13 that are successively laminated; the substrate 2 includes a surface board 21, a core board 22, and a back board 23 that are successively laminated; the bottom layer 3 is an LVT base; the LVT base layer 11 of the surface layer is attached to the surface board 21 of the substrate 2, and the back board 23 of the substrate 2 is attached to the bottom layer 3.

[0040] The preparation method of the LVT composite floor of this Example 2 includes the following steps:

[0041] Step 1, core board preparation: After the pine wood is steamed, it is rotary cut into 4.0 mm thick veneers for standby.

[0042] Step 2, substrate preparation: Flour is added to the melamine-modified urea glue and stirred evenly. The proportion of flour is 40-50%, and an adhesive is prepared. The 4.0 mm thick pine veneer is coated with 180-230 g / m 2 , with the pine side facing up, 0.5 mm thick beech (surface board and back board) is pasted on both sides. The beech texture is perpendicular to the pine texture, and it is cold-pressed for 30 min under a pressure of 5 kg / cm 2 . After forming a three-ply board, it is hot-pressed. The hot-pressing time is 5 min, the hot-pressing pressure is 7 kg / cm 2 , and the hot-pressing temperature is 105-115 °C to obtain a substrate for standby;

[0043] Step 3, laminating the substrate with a 1 mm thick surface layer and a 1 mm thick bottom layer: The substrate is coated with a low-temperature hot-pressing adhesive on both sides, and the coating amount is 300 g / m 2 , after laminating with the surface layer and the bottom layer, it is cold-pressed for 30 min under a pressure of 5 kg / cm 2 , and then hot-pressed. The hot-pressing time is 6 min, the hot-pressing pressure is 7 kg / cm 2 , and the hot-pressing temperature is 80 °C to obtain a large board;

[0044] Step 4, the large board can be sliced after cooling to room temperature;

[0045] Step 5, slicing: The large board is sliced into six blanks;

[0046] Step 6, milling: Mortises and tenons are milled out on the four sides of the blank;

[0047] Step 7, chamfer painting and wax sealing: The surface of the board is chamfered and painted with water-based paint, and the mortises and tenons are wax-sealed;

[0048] Step 8, packing and warehousing.

[0049] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-described exemplary embodiments, and the present utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present utility model.

[0050] In addition, it should be understood that although this specification is described in terms of embodiments, not every embodiment only contains an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An LVT composite floor, characterized in that, It includes a surface layer, a base material, and a bottom layer that are sequentially laminated; the surface layer includes an LVT base layer, a color film layer, and a wear-resistant layer that are sequentially laminated; the base material includes a surface board, a core board, and a back board that are sequentially laminated; the bottom layer is an LVT base; the LVT base layer of the surface layer is adhered to the surface board of the base material, and the back board of the base material is adhered to the bottom layer.

2. The LVT composite floor according to claim 1, characterized in that, In the base material, the surface board and the back board are wood veneers with a thickness of 0.35 to 0.8 mm, the core board is two layers of thin veneers or a single layer of thick veneer, the thickness of the thin veneer is 1.0 to 2.2 mm, and the thickness of the thick veneer is 4.0 mm.

3. The LVT composite floor according to claim 1, characterized in that, The wear-resistant layer is a PVC film layer; the thickness of the wear-resistant layer is 0.2 to 0.5 mm.

4. An LVT composite floor according to claim 1, wherein, The surface of the wear-resistant layer is coated with scratch-resistant paint.

5. A LVT composite floor according to claim 1, wherein, The thickness of the color film layer in the surface layer is 0.1 to 0.2 mm.

6. A LVT composite floor according to claim 1, characterized in that, The color film layer is a PVC transparent film, and its surface is printed with textures.

7. A LVT composite floor according to claim 1, characterized in that, The thicknesses of the LVT base layer of the surface layer and the LVT base of the bottom layer are both 0.7 to 1.0 mm.

8. An LVT composite floor according to claim 1, characterized in that, The surface layer, the base material, and the bottom layer are laminated together through hot-pressing glue.

9. A LVT composite floor according to claim 1, characterized in that, The thickness of this LVT composite floor is less than 8 mm.

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