A formaldehyde-free high-elasticity composite cork floor

Abstract

The application discloses a high-elasticity composite cork floor without formaldehyde, which is composed of a surface layer, a supporting connection layer, a hard wood composite layer, a soft wood composite layer and a bottom hard wood layer which are bonded layer by layer from top to bottom. The high-elasticity composite cork floor is composed of the surface layer, the supporting connection layer, the hard wood composite layer, the soft wood composite layer and the bottom hard wood layer which are bonded layer by layer. The surface layer is soft wood with desired patterns. The supporting connection layer is a connection layer made of relatively hard material in the range of soft wood and used for buffering and supporting. The hard wood composite layer and the soft wood composite layer are hard wood blocks and soft wood blocks which are arranged alternately and used as the buffering layer of the whole upper layer of the floor after bonding. The hard wood blocks and the soft wood blocks have the effect of hard wood supporting and the effect of soft wood elasticity. The high-elasticity composite cork floor effectively solves the problem of uneven elastic force distribution of the whole structure when a local force is applied to the existing composite cork floor which is composed of bonded plates.

Description

Technical Field

[0001] This invention relates to the field of cork flooring, specifically to a formaldehyde-free, highly elastic composite cork flooring. Background Technology

[0002] Flooring is the surface layer of a building's ground or floor. It is made of wood or other materials. There are many classifications of flooring, including: by structure (solid wood flooring, engineered wood flooring, three-layer engineered wood flooring, bamboo flooring, anti-corrosion flooring, cork flooring, and the most popular multi-layer engineered wood flooring); by use (residential, commercial, anti-static, outdoor, stage / dance flooring, sports hall flooring, track and field flooring); and by environmental protection level (E0 grade, E1 grade, F4 grade, JAS star standard F4 star flooring, etc.).

[0003] Cork is typically 4.5 mm thick, with high-quality cork reaching 8.9 mm. Compared to solid wood flooring, cork flooring excels in environmental performance and moisture resistance. There are three main types of cork flooring: pure cork flooring, cork sound-absorbing flooring, and cork solid wood flooring. Although they differ in classification and performance, most existing cork flooring is made from a single piece of composite material. Therefore, when the board is subjected to localized stress, the entire board cannot directly distribute the load, leading to overall twisting or irreversible deformation. This causes the flooring to easily fatigue and become damaged. Furthermore, repeated twisting and deformation can cause dust to escape and be drawn in through the seams, resulting in low overall comfort. In light of these issues, a formaldehyde-free, high-elasticity composite cork flooring is proposed. Summary of the Invention

[0004] The purpose of this invention is to provide a formaldehyde-free, highly elastic composite cork flooring to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a formaldehyde-free, highly elastic composite cork flooring, wherein the composite cork flooring is composed of, from top to bottom, a surface flooring, a support and connecting layer, a hardwood composite layer, a cork composite layer, and a bottom hardwood layer bonded together layer by layer;

[0006] The supporting connection layer is made of softwood with a hardness of medium to high.

[0007] The hardwood composite layer and the softwood composite layer are made by combining softwood blocks and hardwood blocks with different proportions. The proportion of hardwood blocks used in the hardwood composite layer is greater than that of softwood blocks. The hardwood composite layer and the softwood composite layer are interwoven and the positions of the upper and lower hardwood blocks and softwood blocks are vertically aligned.

[0008] After the surface floor, supporting connecting layer, hardwood composite layer, cork composite layer and bottom hardwood layer are composited, a groove and a locking block are opened on the long side of the composite cork floor.

[0009] Preferably, a thin film layer is attached to the outer surface of the surface floor and the back of the bottom hardwood layer after the board is formed.

[0010] Preferably, the contact points of the surface floor, supporting connecting layer, hardwood composite layer, softwood composite layer and bottom hardwood layer are bonded and composited using resin-based adhesives.

[0011] Preferably, the hardwood composite layer includes a first softwood block and a first hardwood block. The first hardwood block and the first softwood block are distributed in columns along the long side. In the short side direction, each column of the first hardwood block and the first softwood block is composed of two types of columns: alternating columns and columns composed entirely of first hardwood blocks. The two types of columns are distributed alternately in the short side direction.

[0012] Preferably, the cork composite layer includes a second cork block and a second hardwood block. The second cork block and the second hardwood block are arranged in columns along the long side. There are two ways to arrange the second cork block and the second hardwood block in columns. One way is to arrange the second cork block and the second hardwood block in columns alternately. The other way is to use only the second cork block to bond together. The columns of the two ways are arranged alternately along the short side.

[0013] Preferably, after the hardwood composite layer and the softwood composite layer are combined, the first softwood block and the first hardwood block that constitute the corresponding composite layer are respectively perpendicular to the second hardwood block and the second softwood block.

[0014] Preferably, the first cork block, the second cork block, the first hardwood block, and the second hardwood block are all regular hexagons. During processing, the first cork block, the second cork block, the first hardwood block, and the second hardwood block are first processed into long strips with regular hexagonal cross sections. After being glued together in the required sequence, they are then sliced ​​to form the corresponding hardwood composite layer and cork composite layer.

[0015] Preferably, the cross-sections of the first cork block, the second cork block, the first hardwood block, and the second hardwood block can be regular polygonal shapes with an even number of sides of a regular quadrilateral or higher.

[0016] Preferably, a semi-circular positioning strip is provided on the right side of the card slot, an engagement groove is provided on the inner side of the positioning strip, and a stop strip is formed above the engagement groove.

[0017] Preferably, the card block includes an inner semi-circular positioning groove, an engagement strip is formed on the right side of the positioning groove, and a top groove is formed directly above the engagement strip.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: The present invention provides a highly elastic composite cork flooring composed of a surface floor, a supporting connecting layer, a hardwood composite layer, a cork composite layer, and a bottom hardwood layer bonded together layer by layer. The surface floor is made of cork with the desired pattern. The supporting connecting layer is a connecting layer made of a relatively hard material within the cork range, serving as a buffer and support. The hardwood composite layer and the cork composite layer are hardwood blocks and cork blocks arranged alternately, which, after being glued together, alternately serve as the buffer layer of the entire flooring. It has the supporting effect of hardwood and the elastic effect of cork, effectively solving the problem of uneven elasticity distribution when the existing composite cork flooring is constructed by gluing together boards. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the present invention;

[0020] Figure 2 This is the front view of the present invention;

[0021] Figure 3 This is a schematic diagram of the structure from a rear view of the present invention;

[0022] Figure 4 This is an exploded view of the present invention;

[0023] Figure 5 This is an exploded view of the main composite layer of the present invention;

[0024] Figure 6 This is a schematic diagram of the hardwood composite layer structure of the present invention;

[0025] Figure 7 This is a schematic diagram of the cork composite layer structure of the present invention.

[0026] In the diagram: 1. Surface floor, 2. Supporting connection layer, 3. Hardwood composite layer, 31. First cork block, 32. First hardwood block, 4. Cork composite layer, 41. Second cork block, 42. Second hardwood block, 5. Bottom hardwood layer, 6. Slot, 61. Positioning strip, 62. Engaging groove, 63. Stop bar, 7. Block, 71. Positioning groove, 72. Engaging strip, 73. Top groove. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] Please see Figure 1-7The present invention provides a technical solution: a formaldehyde-free, high-elasticity composite cork flooring, which is composed of a surface flooring 1, a support and connecting layer 2, a hardwood composite layer 3, a cork composite layer 4 and a bottom hardwood layer 5, which are bonded together layer by layer from top to bottom.

[0029] The support connection layer 2 is made of softwood with a hardness of medium to high.

[0030] The hardwood composite layer 3 and the softwood composite layer 4 are made by combining softwood blocks and hardwood blocks with different proportions. The proportion of hardwood blocks used in the hardwood composite layer 3 is greater than that of softwood blocks. The hardwood composite layer 3 and the softwood composite layer 4 are interwoven and the positions of the upper and lower hardwood blocks and softwood blocks are vertically corresponding.

[0031] After the surface flooring 1, the supporting connecting layer 2, the hardwood composite layer 3, the cork composite layer 4 and the bottom hardwood layer 5 are composited, a groove 6 and a block 7 are opened on the long side of the composite cork flooring.

[0032] This invention provides a highly elastic composite cork flooring consisting of a surface floor 1, a supporting connecting layer 2, a hardwood composite layer 3, a cork composite layer 4, and a bottom hardwood layer 5, bonded together layer by layer. The surface floor 1 is made of cork with a desired pattern. The supporting connecting layer 2 is a connecting layer made of a relatively hard material within the cork range, serving as a buffer and support. The hardwood composite layer 3 and the cork composite layer 4 are hardwood and cork blocks arranged alternately, which, after being glued together, alternately serve as the overall buffer layer of the flooring. It has both the support effect of hardwood and the elasticity effect of cork, effectively solving the problem of uneven elasticity distribution in existing composite cork flooring, which is constructed by gluing together boards, when the overall structure is subjected to localized stress.

[0033] Specifically, a thin film layer is attached to the outer surface of the surface flooring 1 and the back of the bottom hardwood layer 5 after the board is formed. The thin film layer on the surface flooring 1 is used for wear resistance and waterproofing. The commonly used material is PE film, which is attached by heat bonding. The film on the bottom of the bottom hardwood layer 5 is used for moisture and water protection. The bottom hardwood layer 5 serves as the support layer of the entire floor and is the base layer of the floor. It is made of hardwood material. The wood materials used for the surface flooring 1, support and connection layer 2, hardwood composite layer 3, softwood composite layer 4 and bottom hardwood layer 5 can be selected from different types of wood according to the actual usage cost and user needs.

[0034] Specifically, the contact points of the surface floor 1, the supporting connecting layer 2, the hardwood composite layer 3, the cork composite layer 4, and the bottom hardwood layer 5 are bonded together using resin-based adhesives. The adhesive is preferably a polyurethane resin-based adhesive, which is non-toxic, harmless, and has a certain elasticity to work with the hardwood composite layer 3 and the cork composite layer 4.

[0035] Specifically, the hardwood composite layer 3 includes a first softwood block 31 and a first hardwood block 32. The first hardwood block 32 and the first softwood block 31 are arranged in columns along the long side. In the short side direction, each column of the first hardwood block 32 and the first softwood block 31 is composed of two types of columns: alternating columns and columns composed entirely of the first hardwood block 32. The two types of columns are arranged alternately in the short side direction. The hardwood composite layer 3 is above the softwood composite layer 4 and serves as the contact layer closest to the surface layer. It is used to transmit force. After receiving local force, it will transmit the compression caused by the force to the softwood block below, thereby achieving the purpose of high elasticity and overall structural stability. It can also locally relieve force on the ground. In use, the local force on the floor from tables, chairs, bed legs, and even feet can be elastically relieved through the corresponding combination of multiple blocks, improving the overall elasticity of the floor.

[0036] The purpose of partially bonding the first softwood block 31 in the hardwood composite layer 3 is to allow for lateral bending and stress relief in a single plane position after multiple first hardwood blocks 32 are combined, so as to facilitate the conversion of stress into elasticity and improve the support effect and comfort of the floor during use.

[0037] Specifically, the cork composite layer 4 includes a second cork block 41 and a second hardwood block 42. The second cork block 41 and the second hardwood block 42 are arranged in columns along the long side. There are two ways to arrange the second cork block 41 and the second hardwood block 42 in columns. One way is to alternate the arrangement of the second cork block 41 and the second hardwood block 42 in columns. The other way is to use only the second cork block 41 to bond together. The columns of the two combinations are alternately arranged along the short side. The cork composite layer 4 is below the hardwood composite layer 3 and above the bottom hardwood layer 5. It is used to transmit the main elasticity surface, which facilitates the conversion of pressure into elastic deformation and improves the overall elasticity of the floor.

[0038] Specifically, after the hardwood composite layer 3 and the softwood composite layer 4 are combined, the first softwood block 31 and the first hardwood block 32 that constitute the corresponding composite layer are respectively perpendicular to the second hardwood block 42 and the second softwood block 41. When the softwood block and the hardwood block are combined, the edges must be completely aligned to avoid the hardwood block edges overlapping and blocking each other during deformation, which would prevent the structure from achieving the original deformation effect.

[0039] Specifically, the first cork block 31, the second cork block 41, the first hardwood block 32, and the second hardwood block 42 are all regular hexagons. During processing, the first cork block 31, the second cork block 41, the first hardwood block 32, and the second hardwood block 42 are first processed into long strips with regular hexagonal cross sections. After being glued together in the required sequence, they are then sliced ​​to form the corresponding hardwood composite layer 3 and cork composite layer 4.

[0040] Specifically, the cross-sections of the first cork block 31, the second cork block 41, the first hardwood block 32, and the second hardwood block 42 can be regular polygons with an even number of sides, which can ensure that the overall structure is evenly stressed after being combined. In addition to regular polygons, long strips can also be used to distribute the hardwood blocks and cork blocks, such as staggered rectangular structures, which can also achieve the effect of the present invention to a certain extent.

[0041] Specifically, a semi-circular positioning strip 61 is provided on the right side of the slot 6, and an interlocking groove 62 is provided on the inner side of the positioning strip 61. A stop strip 63 is formed above the interlocking groove 62. The slot 6 and the block 7 are a combined structure. In use, the interlocking strip 72 is first inserted into the inside of the interlocking groove 62. After passing the lower outer side of the stop strip 63 and the contact position between the block 7 and the interlocking groove 62, the rotation ensures that the interlocking strip 72 flips and is inserted into the inside of the interlocking groove 62. Finally, the positioning strip 61 is sleeved inside the positioning groove 71, thereby realizing the interlocking of the floor. After interlocking, the hardwood composite layer 3 bears the pressure of the main body, thereby ensuring the support strength of the lateral tensile and compressive forces of the overall structure.

[0042] Furthermore, the preferred thickness ratio of hardwood composite layer 3 and softwood composite layer 4 is 1:1, and the thickness of hardwood composite layer 3 and softwood composite layer 4 is 60% of the thickness of the floor tile kick plate, with the remaining 40% used as other layer thicknesses. The preferred floor thickness is the commonly used standard flooring size of 18 mm. The thickness of the surface flooring 1 is usually 3 mm, the thickness of the supporting and connecting layer 2 is usually 4 mm, the thickness of hardwood composite layer 3 and softwood composite layer 4 is usually 4 mm, and the thickness of the bottom hardwood layer 5 is usually 3 mm.

[0043] Specifically, the card block 7 includes an inner semi-circular positioning groove 71, an engagement strip 72 is formed on the right side of the positioning groove 71, and a top groove 73 is formed directly above the engagement strip 72.

[0044] The purpose of pre-processing hexagonal softwood blocks and hardwood strips is to allow for the splicing of wood strips of varying lengths during the composite process. Furthermore, pre-gluing the cross-sections before cutting has the advantages of using less glue, producing more uniform cutting results, and facilitating accurate alignment of dimensions and positions compared to cutting and then gluing.

[0045] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A formaldehyde-free, high-resilience, parquet cork floor, characterized in that: The composite cork floor is composed of a surface floor (1), a supporting connection layer (2), a hard wood composite layer (3), a cork composite layer (4) and a bottom hard wood layer (5) from top to bottom. The supporting connection layer (2) is made of soft wood with medium-high hardness. The hard wood composite layer (3) comprises first soft wood blocks (31) and first hard wood blocks (32), the first hard wood blocks (32) and the first soft wood blocks (31) are distributed in columns horizontally through long edges, each column of the first hard wood blocks (32) and the first soft wood blocks (31) is divided into two kinds of columns in the short edge direction, one kind of column is composed of the first hard wood blocks (32) and the first soft wood blocks (31) alternately, and the other kind of column is composed of all the first hard wood blocks (32) alternately. The cork composite layer (4) comprises second soft wood blocks (41) and second hard wood blocks (42), the second soft wood blocks (41) and the second hard wood blocks (42) are distributed in columns horizontally through long edges, the second soft wood blocks (41) and the second hard wood blocks (42) have two kinds of combination modes, one kind of combination mode is that the second soft wood blocks (41) and the second hard wood blocks (42) are alternately arranged in columns, and the other kind of combination mode is that all the second soft wood blocks (41) are adhered to form a column, and the columns of the two kinds of combination modes are alternately arranged in the short edge direction. The hard wood composite layer (3) and the cork composite layer (4) are made of different proportions of soft wood blocks and hard wood blocks, the proportion of the hard wood blocks in the hard wood composite layer (3) is greater than that of the soft wood blocks, and the positions of the hard wood blocks and the soft wood blocks of the hard wood composite layer (3) and the cork composite layer (4) vertically correspond to each other. After the surface floor (1), the supporting connection layer (2), the hard wood composite layer (3), the cork composite layer (4) and the bottom hard wood layer (5) are combined, a clamping groove (6) and a clamping block (7) are formed on the long edge side of the composite cork floor.

2. The formaldehyde-free high-elasticity composite cork flooring according to claim 1, characterized in that: The outer surface of the surface floor (1) and the back surface of the bottom hard wood layer (5) are attached with a film layer after the plate is formed.

3. The formaldehyde-free high-elasticity composite cork flooring according to claim 1, wherein: Resin glue is used to bond and combine the surface floor (1), the supporting connection layer (2), the hard wood composite layer (3), the cork composite layer (4) and the bottom hard wood layer (5) at the contact positions of each layer.

4. The formaldehyde-free high-elasticity composite cork flooring according to claim 1, wherein: After the hard wood composite layer (3) and the cork composite layer (4) are combined, the first soft wood blocks (31) and the first hard wood blocks (32) of the corresponding composite layer respectively correspond to the second hard wood blocks (42) and the second soft wood blocks (41) in the vertical direction.

5. The formaldehyde-free, high-resilience, parquet cork flooring according to claim 4, characterized in that: The first soft wood blocks (31), the second soft wood blocks (41), the first hard wood blocks (32) and the second hard wood blocks (42) are all regular hexagons, and the first soft wood blocks (31), the second soft wood blocks (41), the first hard wood blocks (32) and the second hard wood blocks (42) are first processed into wood strips with a regular hexagonal cross section in strip shape, and then cut into pieces to form the corresponding hard wood composite layer (3) and the cork composite layer (4) after being bonded in the required order.

6. The formaldehyde-free high-elasticity composite cork flooring according to claim 5, wherein: The cross section of the first soft wood blocks (31), the second soft wood blocks (41), the first hard wood blocks (32) and the second hard wood blocks (42) is a regular polygonal geometry with an even number of sides greater than or equal to 4.

7. The formaldehyde-free, high-resilience, parquet cork flooring of claim 1, wherein: The right side of the card slot (6) is provided with a semicircular positioning strip (61), the inner side of the positioning strip (61) is provided with a clamping groove (62), and the upper side of the clamping groove (62) is formed with a blocking strip (63).

8. The formaldehyde-free, high-resilience, parquet cork flooring of claim 1, wherein: The clamping block (7) comprises a semicircular positioning groove (71) in the inner side, the right side of the positioning groove (71) is formed with a clamping strip (72), and the upper side of the clamping strip (72) is provided with a top groove (73).

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