EB-cured polypropylene film veneer composite floor

Abstract

The utility model belongs to the technical field of ground paving materials, and relates to an EB (Electron Beam) cured polypropylene film veneer composite floor, which comprises an improved three-layer solid wood composite floor base body layer, according to the improved three-layer solid wood composite floor base body layer, a base material bottom layer, a base material core layer and a base material surface layer are assembled into a sandwich type structure from bottom to top according to longitudinal, transverse and longitudinal wood grains in a staggered mode. The base material core layer is composed of a plurality of battens which are laterally spliced; a gluing layer is arranged between the surface decoration layer and the base material surface layer; and the surface decoration layer is an EB cured polypropylene film. The EB cured polypropylene film veneer composite floor disclosed by the utility model is a substitute product of a solid wood board, so that the consumption of wood can be effectively reduced, and the tension situation of shortage of forest resources is solved, so that natural resources are protected; compared with the existing composite floor and the prior art, the composite floor is more environment-friendly and relatively low in comprehensive cost.

Description

Technical Field

[0001] The utility model belongs to the technical field of ground paving materials, relates to a solid wood composite floor, and in particular to an EB-cured polypropylene film-faced composite floor. Background Art

[0002] Three-layer solid wood composite flooring is a three-layer structure solid wood composite flooring with solid wood plywood or veneer as the panel, solid wood plywood as the core layer, and veneer as the bottom layer. The surface thickness is relatively thick, at least 2mm or more, and has high requirements for the surface materials and quality.

[0003] Chinese patent CN101100897A discloses a production process for three-layer solid wood composite flooring with a fir core board. This process uses fir instead of pine, resolving the warping and deformation issues that exist in existing three-layer solid wood composite flooring core boards made of fir. This reduces the degree and ratio of deformation in the three-layer solid wood composite flooring, improves product quality, and offers significant economic and social benefits. Chinese patent CN213710202U discloses a novel three-layer solid wood composite flooring comprising a composite flooring body comprising panels, each comprising an upper panel and a lower panel. The lower panel is constructed from multiple panels, and both the upper and lower surfaces of the upper panel are provided with transverse grain. The novel three-layer solid wood composite floor is assembled between two sets of composite floor bodies by docking the first connecting plate with the second connecting plate, which reduces the amount of adhesive used and the amount of residual harmful substances, speeds up the splicing speed, and improves work efficiency. The first connecting plate and the second connecting plate are fixed by diamond-shaped fixing rods, which enhances the firmness of the two sets of composite floor bodies when spliced ​​together. The fixing plate is fixed by the insert block, which ensures the firmness of the diamond-shaped fixing rods between the first connecting plate and the second connecting plate. Summary of the Invention

[0004] To overcome the shortcomings of the existing technology, this utility model discloses an EB-cured polypropylene film-faced composite flooring. This new composite board, formed by combining an improved three-layer solid wood composite flooring base with an EB-cured polypropylene film, inherits the elegant and natural qualities of solid wood boards. From the perspective of forest resource conservation, it is a suitable alternative to solid wood boards, effectively reducing wood consumption. It exhibits excellent waterproofing, water resistance, stability, decorative properties, and durability.

[0005] Technical Solution

[0006] An EB-cured polypropylene film-faced composite floor comprises an improved three-layer solid wood composite floor base layer, wherein the improved three-layer solid wood composite floor base layer comprises, from bottom to top, a substrate bottom layer, a substrate core layer, and a substrate surface layer, which are assembled into a sandwich structure in a staggered manner according to longitudinal, transverse, and longitudinal wood grains; the substrate core layer is composed of a plurality of side-jointed strips; a glue coating layer is provided between the surface decorative layer and the substrate surface layer; and the surface decorative layer is an EB-cured polypropylene film.

[0007] In a preferred disclosed example of the present invention, the base layer of the improved three-layer solid wood composite floor has a thickness of 10 to 18 mm.

[0008] In a preferred disclosed example of the present invention, the thickness of the bottom layer of the substrate is 0.6-2.0 mm, the moisture content is 8-12%, and the substrate is made of birch, pine, poplar and other tree species, preferably pine.

[0009] In a preferred disclosed example of the present invention, the gaps between the slats of the substrate core layer are ≤1 mm, and the wood species is pine, poplar, fir, etc., preferably pine.

[0010] Furthermore, the width of the slats is 20 to 50 mm, the thickness is 8 to 13 mm, and the moisture content is 8 to 12%.

[0011] Furthermore, waste wood, forestry firewood or fast-growing wood and soft broad-leaved wood can be processed into strips and spliced ​​with tape or hot-melt adhesive lines.

[0012] In a preferred disclosed example of the present invention, the surface layer of the substrate has a thickness of 1 to 3 mm and a moisture content of 8 to 12%, and is made of hard broad-leaved wood such as birch and maple.

[0013] Furthermore, high-quality hardwood is peeled or sawn into veneer, which is required to be hard, resistant to compression, and have beautiful texture and uniform color.

[0014] In a preferred disclosed example of the present utility model, the thickness of the surface decoration layer is 0.27±0.05 mm.

[0015] Furthermore, the EB-cured polypropylene film is a film made of polypropylene as raw material using an electron beam curing process. The surface not only contains the texture of wood, but also has paint, a special plane and an antique effect, so that the wood texture and the paint effect are compounded, and it has natural wood texture, antique effect, and paint treatment effect.

[0016] In the preferred disclosed example of the present invention, the adhesive layer has a thickness of 0.1 to 0.2 mm and is formed by curing a polyurethane resin hot melt adhesive, thereby overcoming the problem that EB-cured polypropylene film is prone to surface defects on rough wood surfaces.

[0017] Beneficial effects

[0018] This EB-cured polypropylene film, which has a wood texture, antique effect, and paint finish, is applied to the surface of a flooring substrate. This multi-layer composite flooring is finished with an EB-cured polypropylene film. This inherits the elegant and natural qualities of solid wood panels. From the perspective of forest resource conservation, it is a solid wood alternative, effectively reducing wood consumption and addressing the shortage of forest resources, thereby protecting natural resources. Compared with existing composite flooring and existing technologies, it offers a simpler process, is more environmentally friendly, and has a relatively low overall cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 .Schematic diagram of the structure of EB-cured polypropylene film-faced composite flooring.

[0020] Figure 2 .Schematic diagram of substrate core layer arrangement,

[0021] The components are marked as (1) surface decorative layer, (2) adhesive layer, (3) improved three-layer solid wood composite flooring base layer, (4) base material bottom layer, (5) base material core layer, and (6) base material surface layer. DETAILED DESCRIPTION

[0022] 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.

[0023] Example 1

[0024] An EB-cured polypropylene film-faced composite floor comprises an improved three-layer solid wood composite floor base layer 3, wherein the improved three-layer solid wood composite floor base layer 3 comprises, from bottom to top, a substrate bottom layer 4, a substrate core layer 5, and a substrate surface layer 6, which are staggered in longitudinal, transverse, and longitudinal wood grains to form a sandwich structure; the substrate core layer 5 is composed of a plurality of side-jointed slats; a glue coating layer 2 is provided between a surface decorative layer 1 and the substrate surface layer 6; the surface decorative layer 1 is an EB-cured polypropylene film.

[0025] Example 2

[0026] An EB-cured polypropylene film-faced composite flooring comprises an improved three-layer solid wood composite flooring base layer 3. The improved three-layer solid wood composite flooring base layer 3 comprises, from bottom to top, a substrate bottom layer 4, a substrate core layer 5, and a substrate surface layer 6, which are assembled into a sandwich structure with a thickness of 10 to 18 mm, staggered along longitudinal, transverse, and longitudinal wood grains. The substrate core layer 5 is composed of a plurality of side-jointed slats. A glue coating layer 2 is provided between a surface decorative layer 1 and the substrate surface layer 6. The surface decorative layer 1 is an EB-cured polypropylene film with a thickness of 0.27±0.05 mm.

[0027] Example 3

[0028] An EB-cured polypropylene film-faced composite flooring comprises an improved three-layer solid wood composite flooring base layer 3, wherein the improved three-layer solid wood composite flooring base layer 3 comprises, from bottom to top, a substrate bottom layer 4, a substrate core layer 5, and a substrate surface layer 6, which are assembled into a sandwich structure with wood grains staggered in the longitudinal, transverse, and longitudinal directions, and have a thickness of 10 to 18 mm. The substrate bottom layer 4 has a thickness of 0.6 to 2.0 mm and a moisture content of 8 to 12%, and is made of birch, pine, poplar, or other wood species. The substrate core layer 5 comprises a plurality of side-jointed slats, with gaps between the slats ≤ 1 mm, and is made of pine, poplar, fir, or other wood species. The slats have a width of 20 to 50 mm, a thickness of 8 to 13 mm, and a moisture content of 8 to 12%. A glue coating layer 2 is provided between the surface decorative layer 1 and the substrate surface layer 6. The surface decorative layer 1 is an EB-cured polypropylene film with a thickness of 0.27±0.05 mm.

[0029] Example 4

[0030] An EB-cured polypropylene film-faced composite flooring comprises an improved three-layer solid wood composite flooring base layer 3, wherein the improved three-layer solid wood composite flooring base layer 3 is formed from bottom to top by a base material bottom layer 4, a base material core layer 5 and a base material surface layer 6, which are staggered in the longitudinal, transverse and longitudinal wood grains to form a sandwich structure with a thickness of 10 to 18 mm; the base material bottom layer 4 is 0.6 to 2.0 mm thick and has a moisture content of 8 to 12%, and is made of birch, pine, poplar or other species; the base material core layer 5 ... bottom layer 5 is 0.6 to 2.0 mm thick and has a moisture content of 8 to 12%, and is made of birch, pine, poplar or other species; the base material core layer 5 is 0.6 to 2.0 mm thick and has a moisture content of 8 to 12%, and is 5 is composed of a plurality of side-jointed slats, with gaps between the slats ≤ 1 mm, and the slats are made of pine, poplar, fir or other wood species, with a width of 20 to 50 mm, a thickness of 8 to 13 mm, and a moisture content of 8 to 12%. A rubber coating layer 2 is provided between the surface decorative layer 1 and the substrate surface layer 6. The surface decorative layer 1 is an EB-cured polypropylene film with a thickness of 0.27 ± 0.05 mm. The substrate surface layer 6 is made of hard broad-leaved wood such as birch and maple with a thickness of 1 to 3 mm and a moisture content of 8 to 12%.

[0031] Example 5

[0032] An EB-cured polypropylene film-faced composite flooring comprises an improved three-layer solid wood composite flooring base layer 3, wherein the improved three-layer solid wood composite flooring base layer 3 is formed from bottom to top by a substrate bottom layer 4, a substrate core layer 5, and a substrate surface layer 6, which are staggered in the longitudinal, transverse, and longitudinal wood grains to form a sandwich structure with a thickness of 10 to 18 mm; the substrate bottom layer 4 has a thickness of 0.6 to 2.0 mm and a moisture content of 8 to 12%, and is made of birch, pine, poplar, or other wood species; the substrate core layer 5 is composed of a plurality of side-jointed slats, and the slats are interlaced with each other. The gap is ≤1mm, and the wood species are pine, poplar, fir, etc. The width of the slats is 20-50mm, the thickness is 8-13mm, and the moisture content is 8-12%; a coating layer 2 is provided between the surface decorative layer 1 and the surface layer 6 of the substrate, and the coating layer 2 is 0.1-0.2mm thick and is formed by curing a polyurethane resin hot melt adhesive; the surface decorative layer 1 is an EB-cured polypropylene film with a thickness of 0.27±0.05mm; the thickness of the surface layer 6 of the substrate is 1-3mm, the moisture content is 8-12%, and it is a hard broad-leaved tree material such as birch and maple.

[0033] 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. An EB-cured polypropylene film-faced composite floor, comprising an improved three-layer solid wood composite floor base layer (3), characterized in that: The improved three-layer solid wood composite flooring base layer (3) is formed from bottom to top by a substrate bottom layer (4), a substrate core layer (5) and a substrate surface layer (6) staggered in longitudinal, transverse and longitudinal wood grains to form a sandwich structure; the substrate core layer (5) is composed of a plurality of side-jointed strips; a glue coating layer (2) is provided between the surface decorative layer (1) and the substrate surface layer (6); the surface decorative layer (1) is an EB-cured polypropylene film.

2. The EB-cured polypropylene film-faced composite flooring according to claim 1, characterized in that: The improved three-layer solid wood composite floor base layer (3) has a thickness of 10 to 18 mm.

3. The EB-cured polypropylene film-faced composite flooring according to claim 1, characterized in that: The base material bottom layer (4) has a thickness of 0.6 to 2.0 mm and a moisture content of 8 to 12%, and is made of birch, pine or poplar.

4. The EB-cured polypropylene film-faced composite flooring according to claim 3, characterized in that: The base material bottom layer (4) is pine wood.

5. The EB-cured polypropylene film-faced composite flooring according to claim 1, characterized in that: The gaps between the slats of the substrate core layer (5) are ≤1 mm and are made of pine, poplar or fir.

6. The EB-cured polypropylene film-faced composite flooring according to claim 5, characterized in that: The slats of the substrate core layer (5) are made of pine wood.

7. The EB-cured polypropylene film-faced composite flooring according to claim 1, characterized in that: The strip has a width of 20 to 50 mm, a thickness of 8 to 13 mm, and a moisture content of 8 to 12%.

8. The EB-cured polypropylene film-faced composite flooring according to claim 1, characterized in that: The substrate surface layer (6) has a thickness of 1 to 3 mm and a moisture content of 8 to 12%, and is made of birch or maple.

9. The EB-cured polypropylene film-faced composite flooring according to claim 1, characterized in that: The surface decoration layer (1) has a thickness of 0.27±0.05 mm.

10. The EB-cured polypropylene film-faced composite flooring according to claim 1, characterized in that: The adhesive coating layer (2) has a thickness of 0.1 to 0.2 mm and is formed by curing a polyurethane resin hot melt adhesive.

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