Membrane veneer solid wood composite floor

Abstract

The utility model belongs to the technical field of home decoration materials, and relates to a film veneer solid wood composite floor which sequentially comprises a soft film, a wood composite board, a core board and a back board from top to bottom, the texture direction of the soft film is consistent with the surface texture direction of the wood composite board attached to the soft film, and the surface texture direction of the core board is consistent with the surface texture direction of the wood composite board attached to the core board. The wood composite board is formed by longitudinally assembling and arranging an upper layer board and a lower layer board according to the texture direction, and the wood composite board, the core board and the back board are longitudinally, transversely and longitudinally arranged in a staggered mode according to the wood texture. According to the utility model, low-grade hard wood, fast-growing wood plates and the like are used as raw materials, and the functions of scratch resistance, stain resistance, antibiosis, impact resistance, corrosion resistance, good thermal stability and the like of soft film materials are utilized, so that the characteristics of high-quality foot feeling, temperature regulation and humidity regulation of wood and the excellent functional performance of the soft film materials are integrated; the disclosed film veneer solid wood composite floor is good in thermal stability and good in cracking resistance, and almost no high-quality hardwood resource is used.

Description

Technical Field

[0001] The utility model belongs to the technical field of home decoration materials, relates to floors, and in particular to a film-faced solid wood composite floor. Background Art

[0002] As the laminate flooring market becomes increasingly saturated, solid wood flooring is gaining an increasing market share in the entire flooring industry. Among them, solid wood composite flooring, as a geothermal floor, is gaining increasing market favor due to its environmental friendliness, resistance to deformation, wide applicability, and attractive appearance. In the current wood resource market, precious hard surface board materials are becoming increasingly scarce, especially the light-colored, high-grade surface boards that are generally preferred by domestic end consumers. This has led to rising raw material costs, but still cannot meet the product colors and patterns required by customers. To meet the needs of end-users, by applying a soft film with a variety of colors to the surface of the floor, the color difference of the floor surface can be reduced. At the same time, the utilization of low-grade wood resources with large color differences can be improved, reducing raw material costs. While ensuring quality, it can also meet customer demand for a variety of floor patterns and patterns, which is important for the sustainable development of the company.

[0003] Patent publication number CN112455028A discloses a low-VOC water-based paint resin film-finished solid wood composite flooring and its preparation method. The flooring comprises, from top to bottom, a water-based paint top layer, a resin film decorative layer, a multi-layer substrate layer, and a backing plate. The method primarily involves preparing a water-based UV topcoat and a resin film decorative layer.

[0004] The invention patent with publication number CN118144376A discloses a specially structured EB-cured polypropylene film-faced multi-layer composite floor, comprising a substrate and a surface layer attached to the substrate, wherein the substrate comprises a surface layer, a core layer, and a substrate bottom layer, and a eucalyptus layer and a eucalyptus layer are provided between the core layer, the surface layer, and the bottom layer, with the textures of the layers arranged in a crisscross pattern. The surface layer is an EB-cured polypropylene film, and its length direction is parallel to the wood texture of the surface layer. The invention also discloses a preparation process. The present invention attaches a polypropylene film cured by an EB process with a wood texture, antique effect, and paint treatment effect to the surface of a specially structured floor substrate to produce a specially structured EB-cured polypropylene film-faced locking multi-layer composite floor.

[0005] The invention patent with publication number CN109537847A discloses a multi-layer composite floor with an EB-cured polypropylene film finish, comprising a floor substrate and a surface layer attached to the substrate, wherein the substrate is a multi-layer substrate with a thickness of 11.7 to 14.7 mm, and the surface layer is composed of a polyurethane resin adhesive layer adhered to an EB-cured polypropylene film with a thickness of 0.27 ± 0.05 mm, and the wood grain of the substrate surface layer is parallel to the length direction of the EB-cured polypropylene film. The polyurethane resin adhesive layer has a thickness of 0.1 to 0.2 mm; the substrate surface layer is made of beech or birch with a thickness of ≥0.8 mm. The present invention also discloses a production process for the floor, which solves the current shortage of wood resources and retains the natural texture characteristics of the wood; using polyurethane resin, the EB film and the multi-layer substrate are laminated and pressed together in one step, and the surface does not need to be coated with ultraviolet light-curing UV paint.

[0006] The utility model patent with announcement number CN216766638U discloses a flame-retardant polypropylene decorative film-finished floor heating floor, including a wear-resistant layer, a printing layer, a polypropylene base film layer and an aluminum alloy substrate layer; the flame-retardant polypropylene decorative film-finished floor heating floor uses PP film as the finishing layer, has good temperature resistance, does not deform or fade at high temperatures of 100°C, and does not emit harmful substances. It is biodegradable, formaldehyde-free and has excellent surface properties. The base material is aluminum plate, and the built-in wires can be plugged in. It has a high safety level and the combustion grade can reach Class A.

[0007] Utility model patent publication number CN118144376A discloses a film-faced composite flooring, comprising a wood base layer, an adhesive layer, and a decorative layer. The adhesive layer is a hot-melt adhesive layer, and the decorative layer is a polymer decorative film. This composite flooring has relatively good surface quality and can reduce production energy consumption and pollution to a certain extent, thus promoting energy conservation and clean production.

[0008] The invention patent with publication number CN1824476A discloses a method for manufacturing a solid wood multi-layer floor with a wood fiber film finish, which includes: gluing several criss-cross solid wood veneers to form a wood base plate; laying wood fiber adhesive tape flatly on the glued wood base plate; and laying a wood fiber decorative film on the wood fiber adhesive tape, hot pressing, and drying. Summary of the Invention

[0009] In order to overcome the defects of the existing technology, the utility model discloses a membrane-faced solid wood composite floor. By improving the floor structure, the utilization rate of low-grade wood is improved, and at the same time the floor surface is enriched, which meets the current aesthetic needs of the public, has a stable structure, and meets all aspects of performance requirements under floor heating conditions.

[0010] Technical Solution

[0011] A film-faced solid wood composite floor comprises, from top to bottom, a soft film, a wood composite board, a core board and a back board, wherein the wood grain direction of the surface of the soft film is consistent with the surface grain direction of the wood composite board adhered thereto, the wood composite board is assembled by an upper board and a lower board and arranged longitudinally according to the grain direction, and the wood composite board, core board and back board are staggered in longitudinal, transverse and longitudinal directions according to the wood grain.

[0012] In a preferred embodiment of the present invention, the soft film has a thickness of 0.1 to 0.6 mm and is any one of PCT, PVC, PET, PE, PP, or EB films, with a wood-textured surface. By applying the film, the color variations of low-grade wood can be covered. The soft film surface can provide a variety of texture options based on market and customer needs, including wood textures, fabric textures, marble textures, and frosted textures.

[0013] In a preferred disclosed example of the present invention, the upper plate has a thickness of 0.15 to 2.5 mm and is made of peeled poplar, eucalyptus and other fast-growing wood species, or birch and other cost-effective wood, which is softer than hardwood.

[0014] In a preferred embodiment of the present invention, the lower layer has a thickness of 0.5 to 4.0 mm and is a single sheet of sawn or planed low-grade hardwood such as oak, black walnut, cherry, monocot, birch, or sapele, or a spliced sheet of veneer spliced in both width and length. The spliced sheet is typically made of leftover logs, improving log utilization.

[0015] In the structure of wood composite panels, the upper layer is made of rotary-cut fast-growing wood or low-grade hardwood to improve wood utilization. The lower layer is made of sawn or planed hardwood species, creating a combination of soft and hard woods. This not only ensures a certain wood thickness for the wood composite panel, but also creates a more elastic feel due to the combination of soft and hard woods. The upper layer is designed to reduce end marks that may occur when the lower layer is made of plywood. Secondly, it reduces the thickness of the lower layer, allowing for more fast-growing wood resources and improving raw material utilization.

[0016] In a preferred disclosed embodiment of the present invention, the core board has a thickness of 5 to 11 mm and is made of spruce, Scots pine, poplar or fir.

[0017] In a preferred disclosed example of the present invention, the upper plate, lower plate, core plate and back plate are arranged in a longitudinal, longitudinal, transverse and longitudinal manner according to the wood grain and are assembled and hot-pressed.

[0018] In a preferred embodiment of the present invention, the backboard has a thickness of 0.4 to 4 mm and is made of birch, pine, poplar, beech or okoume, preferably pine.

[0019] In a preferred disclosed example of the present invention, a glue layer is provided between the soft film and the wood composite board, and the glue layer is formed by curing a polyurethane hot melt adhesive, and the coating amount of the polyurethane hot melt adhesive is 40 to 120 g / m2.

[0020] According to a preferred disclosed embodiment of the present invention, the back surface and the four-side notches of the membrane-faced solid wood composite floor are also sealed with a moisture-proof film.

[0021] Beneficial effects

[0022] The membrane-faced solid wood composite flooring disclosed in this utility model uses low-grade hardwood and fast-growing wood boards as its primary raw materials. It utilizes the scratch resistance, stain resistance, antibacterial, impact resistance, corrosion resistance, and thermal stability of soft membrane materials. It combines the high-quality feel and temperature and humidity control characteristics of wood with the excellent functional properties of soft membrane materials. The resulting membrane-faced solid wood composite flooring exhibits excellent thermal stability and crack resistance, using virtually no high-quality hardwood resources. It also overcomes the problem of the end marks of wood composite boards appearing on the soft membrane. The structural design fully considers key factors such as cracking, heat transfer, and deformation, significantly reducing the risk of surface cracking when used for floor heating. The surface presentation of soft membrane products can provide a variety of texture options based on market and customer needs, such as fabric, marble, wood, and frosted textures, which better meet the current living needs of the general public and have broad market development prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 .Schematic diagram of the structure of membrane-faced solid wood composite flooring;

[0024] Figure 2 .Schematic diagram of the composite panel structure;

[0025] Among them, the labels of each component are: 1. Soft film; 2. Wood composite board; 3. Core board; 4. Back board; 2-1. Upper board; 2-2. Lower board. DETAILED DESCRIPTION

[0026] The present invention will be described in detail below with reference to the embodiments so that those skilled in the art can better understand the present invention. However, the present invention is not limited to the following embodiments.

[0027] Example 1

[0028] A film-faced solid wood composite floor comprises, from top to bottom, a soft film 1, a wood composite board 2, a core board 3 and a back board 4, wherein the texture direction of the soft film 1 is consistent with the surface texture direction of the wood composite board 2 attached thereto, and the soft film is a PCT film with a thickness of 0.1 mm; the wood composite board 2 is assembled by an upper board 2-1 and a lower board 2-2 arranged longitudinally in the texture direction, and the wood composite board 2, core board 3 and back board 4 are staggered in the longitudinal, transverse and longitudinal directions according to the wood grain.

[0029] Example 2

[0030] A film-faced solid wood composite floor comprises, from top to bottom, a soft film 1, a wood composite board 2, a core board 3 and a back board 4, wherein the texture direction of the soft film 1 is consistent with the surface texture direction of the wood composite board 2 attached thereto, and the soft film is a PP film with a thickness of 0.6 mm; the wood composite board 2 is assembled and arranged longitudinally along the texture direction by an upper board 2-1 and a lower board 2-2, wherein the upper board 2-1 is 0.15 to 2.5 mm thick and is made of rotary-cut poplar wood, and the lower board 2-2 is 0.5 to 4.0 mm thick and is made of sawn or planed oak wood; the wood composite board 2, core board 3 and back board 4 are arranged alternately longitudinally, transversely and vertically according to the wood texture.

[0031] Example 3

[0032] A film-faced solid wood composite floor comprises, from top to bottom, a soft film 1, a wood composite board 2, a core board 3 and a back board 4, wherein the texture direction of the soft film 1 is consistent with the surface texture direction of the wood composite board 2 attached thereto, and the soft film is a PE film with a thickness of 0.2 mm; the wood composite board 2 is assembled and arranged longitudinally along the texture direction by an upper board 2-1 and a lower board 2-2, wherein the upper board 2-1 is 0.15 to 2.5 mm thick and is made of rotary-cut poplar, and the lower board 2-2 is 0.5 to 4.0 mm thick and is made of sawn or sliced oak; the core board 3 is 5 to 11 mm thick and is made of spruce; the wood composite board 2, core board 3 and back board 4 are staggered in the longitudinal, transverse and longitudinal directions according to the wood texture.

[0033] Example 4

[0034] A film-faced solid wood composite floor comprises, from top to bottom, a soft film 1, a wood composite board 2, a core board 3 and a back board 4, wherein the texture direction of the soft film 1 is consistent with the surface texture direction of the wood composite board 2 attached thereto, and the soft film is a PP film with a thickness of 0.3 mm; the wood composite board 2 is composed of an upper board 2-1 and a lower board 2-2 arranged longitudinally along the texture direction, the upper board 2-1 is 0.15-2.5 mm thick and is made of rotary-cut poplar, and the lower board 2-2 is 0.5-4.0 mm thick and is made of sawn or planed oak; the core board 3 is 5-11 mm thick and is made of spruce; the back board 4 is 0.4-4 mm thick and is made of Scots pine; the wood composite board 2, core board 3 and back board 4 are staggered in the longitudinal, transverse and longitudinal directions according to the wood texture.

[0035] Example 5

[0036] A film-faced solid wood composite floor comprises, from top to bottom, a soft film 1, a wood composite board 2, a core board 3 and a back board 4, wherein the texture direction of the soft film 1 is consistent with the surface texture direction of the wood composite board 2 attached thereto, and the soft film is an EB film with a thickness of 0.2 mm; the wood composite board 2 is assembled from an upper board 2-1 and a lower board 2-2 arranged longitudinally along the texture direction, the upper board 2-1 is 0.15-2.5 mm thick and is made of rotary-cut poplar, and the lower board 2-2 is 0.5-4.0 mm thick and is made of sawn or sliced oak; the core board 3 is 5-11 mm thick and is made of spruce; the back board 4 is 0.4-4 mm thick and is made of poplar; the wood composite board 2, core board 3 and back board 4 are staggered in the longitudinal, transverse and longitudinal directions according to the wood texture.

[0037] Example 6

[0038] A film-faced solid wood composite floor comprises, from top to bottom, a soft film 1, a wood composite board 2, a core board 3 and a back board 4, wherein the wood grain direction of the soft film 1 is consistent with the surface grain direction of the wood composite board 2 attached thereto, and the soft film is a PP film with a thickness of 0.3 mm; the wood composite board 2 is composed of an upper board 2-1 and a lower board 2-2 arranged longitudinally along the grain direction, the upper board 2-1 is 0.15-2.5 mm thick and is made of rotary-cut poplar, and the lower board 2-2 is 0.5-4.0 mm thick and is made of sawn or planed oak; the core board 3 is 5-11 mm thick and is made of spruce; the back board 4 is 0.4-4 mm thick and is made of Scots pine; the wood composite boards 2, core board 3 and back board 4 are staggered in longitudinal, transverse and longitudinal directions according to the wood grain; and a glue layer is provided between the soft film 1 and the wood composite board 2.

[0039] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the specification of the present invention, or directly or indirectly applied in other related technical fields, is also included in the patent protection scope of the present invention.

Claims

1. A membrane-faced solid wood composite floor, comprising, from top to bottom, a soft membrane (1), a wood composite board (2), a core board (3) and a back board (4), characterized in that: The wood grain direction of the surface of the soft film (1) is consistent with the surface grain direction of the wood composite board (2) attached thereto. The wood composite board (2) is assembled and arranged longitudinally by an upper board (2-1) and a lower board (2-2) according to the grain direction. The wood composite board (2), the core board (3) and the back board (4) are arranged in a staggered manner longitudinally, transversely and longitudinally according to the wood grain.

2. The membrane-faced solid wood composite floor according to claim 1, characterized in that: The soft film (1) has a thickness of 0.1 to 0.6 mm and is any one of PCT film, PVC film, PET film, PE film, PP film or EB film.

3. The membrane-faced solid wood composite floor according to claim 1, characterized in that: The upper plate (2-1) has a thickness of 0.15 to 2.5 mm and is made of rotary-cut poplar, eucalyptus or birch.

4. The membrane-faced solid wood composite floor according to claim 1, characterized in that: The lower layer board (2-2) has a thickness of 0.5 to 4.0 mm and is a sawn or sliced single board of oak, black walnut, cherry, monocot, birch or sapele or a spliced single board spliced in width and length directions.

5. The membrane-faced solid wood composite floor according to claim 1, characterized in that: The core board (3) has a thickness of 5 to 11 mm and is made of spruce, Scots pine, poplar or fir.

6. The membrane-faced solid wood composite flooring according to claim 1, characterized in that: The upper plate (2-1), the lower plate (2-2), the core plate (3) and the back plate (4) are assembled in a longitudinal, longitudinal, transverse, and longitudinal arrangement according to the wood grain.

7. The membrane-faced solid wood composite floor according to claim 1, characterized in that: The backboard (4) has a thickness of 0.4 to 4 mm and is made of birch, Chinese fir, poplar, beech or okoume.

8. The membrane-faced solid wood composite floor according to claim 7, characterized in that: The backboard (4) is made of Pinus sylvestris var. mongolica.

9. The membrane-faced solid wood composite floor according to claim 1, characterized in that: An adhesive layer is also provided between the soft film (1) and the wood composite board (2), and the adhesive layer is formed by solidifying a polyurethane hot melt adhesive.

10. The membrane-faced solid wood composite floor according to any one of claims 1 to 9, characterized in that: The back side and the four side notches of the membrane-faced solid wood composite floor are also sealed with moisture-proof films.

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