Novel three-layer solid wood floor resistant to floor heating environment and dampproof

Abstract

The utility model discloses a novel three-layer solid wood floor resistant to a floor heating environment and moisture, and belongs to the field of solid wood floors. The solid wood floor comprises a solid wood base material, a face plate and a bottom plate are arranged on the upper face and the lower face of the solid wood base material respectively, the face plate comprises a wear-resisting layer and an upper balance piece, the upper balance piece is bonded between the wear-resisting layer and the solid wood base material, and the solid wood base material comprises a face plate wood veneer, an upper transverse layer, a solid wood original core layer, a lower transverse layer and a bottom plate wood veneer which are sequentially bonded from top to bottom and integrally formed. The bottom plate comprises a lower balance piece and a damp-proof layer, and the lower balance piece is bonded between the damp-proof layer and the solid wood base material. The upper balance sheet and the lower balance sheet are used as liner layers for pressing and attaching the wear-resistant layer and the waterproof layer, so that the cracking phenomenon of the solid wood floor in a geothermal environment and the bubbling phenomenon in a humid environment can be prevented at the same time; the toughness and impact resistance of the floor can be improved, and the tile deformation phenomenon of the floor is prevented.

Description

Technical Field

[0001] This utility model belongs to the field of solid wood flooring, and more specifically, it relates to a new three-layer solid wood flooring that is resistant to underfloor heating and moisture-proof. Background Technology

[0002] Currently, the new three-layer solid wood flooring with engineered wood veneer on the domestic market mainly uses two processes: direct-bonded engineered wood and MDF (medium-density fiberboard) laminated flooring. Engineered wood flooring is mainly sold in the south because underfloor heating is rare there. Direct-bonded engineered wood or other direct-bonded wood veneer flooring is prone to cracking in underfloor heating environments. In the north, almost every household has underfloor heating, and the water temperature for underfloor heating is 60℃-80℃. To prevent cracking in the extreme environment of underfloor heating, flooring manufacturers choose to sell engineered wood flooring with MDF laminated with melamine paper in the north. However, MDF also has its drawbacks. Its biggest problem is that MDF is susceptible to water and moisture. In humid environments, the subfloor is prone to bubbling. Currently, due to the high humidity, many high-density engineered wood floorings are experiencing bubbling, making them unpopular in the southern market. At the same time, engineered wood flooring cannot survive in the north.

[0003] Chinese patent application number 202022901133.X discloses a novel three-layer solid wood diamond-surface geothermal floor, comprising a solid wood core board, a solid wood veneer, and a solid wood base board. The solid wood veneer and base board are disposed on both sides of the solid wood core board. A diamond layer, made of high-density fiberboard, is disposed on the solid wood veneer. Although this utility model floor can avoid cracking in underfloor heating environments by using high-density fiberboard for the diamond layer, it is still not suitable for humid environments. Moreover, the solid wood core layer uses a single-layer solid wood structure, which has poor resistance to stress deformation. Especially in scenarios where underfloor heating and humid environments coexist, there is a need for a solid wood floor that can prevent both cracking and bubbling, and has strong resistance to stress deformation. Existing technology has not yet solved this technical problem. Summary of the Invention

[0004] The purpose of this invention is to provide a new type of three-layer solid wood flooring that is suitable for both underfloor heating and humid environments, and has strong resistance to stress deformation, thereby overcoming the aforementioned defects in the existing technology.

[0005] This utility model is achieved using the following technical solution:

[0006] A new type of three-layer solid wood flooring that is resistant to underfloor heating and moisture-proof includes a solid wood substrate. The solid wood substrate has a top panel and a bottom panel respectively. The top panel includes a wear-resistant layer and an upper balancing sheet. The upper balancing sheet is bonded between the wear-resistant layer and the solid wood substrate. The solid wood substrate includes a top panel veneer, an upper transverse layer, a solid wood core layer, a lower transverse layer, and a bottom panel veneer, which are bonded together and integrally formed from top to bottom. The bottom panel includes a lower balancing sheet and a moisture-proof layer. The lower balancing sheet is bonded between the moisture-proof layer and the solid wood substrate.

[0007] As a specific embodiment, the wear-resistant layer is melamine-impregnated paper.

[0008] As a specific embodiment, the upper and lower balance plates are made of explosion-proof fiber material.

[0009] As a specific embodiment, the wood grain direction of the solid wood core layer is arranged to intersect with the wood grain directions of the upper and lower transverse layers.

[0010] As a specific embodiment, the upper and lower transverse layers are respectively provided with intersecting transverse ribs and longitudinal ribs, and the upper and lower surfaces of the solid wood core layer are provided with intersecting transverse grooves and longitudinal grooves. The transverse ribs and longitudinal ribs on the upper and lower transverse layers are respectively connected to the transverse grooves and longitudinal grooves on the upper and lower surfaces of the solid wood core layer.

[0011] As one specific embodiment, the moisture-proof layer is a styrene-based thermoplastic elastomer.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] (1) The present invention uses an upper balance plate and a lower balance plate as a padding layer for pressing the wear-resistant layer and the waterproof layer. The upper balance plate and the lower balance plate are a water-resistant and temperature-resistant explosion-proof fiber material. Even if the core material of the floor changes in a humid environment or underfloor heating environment, the balance plate will not change in size. Therefore, it can simultaneously prevent the cracking phenomenon of solid wood flooring in underfloor heating environment and the bubbling phenomenon in humid environment.

[0014] (2) The solid wood substrate of this utility model adopts a multi-layer structure of panel veneer, upper transverse layer, solid wood core layer, lower transverse layer and bottom veneer integrally formed. The wood grain direction of the solid wood core layer is intersected with the wood grain direction of the upper transverse layer and the lower transverse layer. The fibers of each layer of board are interwoven, which not only offsets the internal stress of the wood, but also changes the unidirectional isotropic characteristics of the wood, making the flooring isotropic. Therefore, it has good stability, is not easy to deform or crack, and can improve the toughness and impact resistance of the flooring, and prevent the flooring from warping.

[0015] (3) This utility model improves the deformation resistance of the upper and lower transverse layers and the connection strength with the solid wood core layer by connecting the transverse ribs and longitudinal ribs on the upper and lower transverse layers with the transverse grooves and longitudinal grooves on the upper and lower transverse layers respectively, thereby further enhancing the overall stress deformation resistance of the solid wood substrate. Attached Figure Description

[0016] Figure 1 This is an exploded structural diagram of the present invention.

[0017] Figure 2 This is a cross-sectional structural diagram of the present invention.

[0018] Figure 3 This is a three-dimensional structural diagram of the upper horizontal layer of this utility model.

[0019] Figure 4 This is a three-dimensional structural diagram of the solid wood core layer of this utility model.

[0020] In the diagram: 1. Panel; 11. Wear-resistant layer; 12. Upper balance plate; 2. Solid wood substrate; 21. Panel veneer; 22. Upper transverse layer; 221. Transverse ribs; 222. Longitudinal ribs; 23. Solid wood core layer; 231. Transverse groove; 232. Longitudinal groove; 24. Lower transverse layer; 25. Bottom veneer; 3. Bottom plate; 31. Lower balance plate; 32. Moisture-proof layer. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings.

[0022] like Figure 1 , Figure 2 As shown, a new three-layer solid wood flooring that is resistant to underfloor heating and moisture-proof includes a solid wood substrate 2. The solid wood substrate 2 has a top panel 1 and a bottom panel 3 on its top and bottom sides, respectively. The top panel 1 includes a wear-resistant layer 11 and an upper balancing plate 12. The upper balancing plate 12 is bonded between the wear-resistant layer 11 and the solid wood substrate 2. The solid wood substrate 2 includes a top panel veneer 21, an upper transverse layer 22, a solid wood core layer 23, a lower transverse layer 24, and a bottom panel veneer 25, which are bonded together and integrally formed from top to bottom. The bottom panel 3 includes a lower balancing plate 31 and a moisture-proof layer 32. The lower balancing plate 31 is bonded between the moisture-proof layer 32 and the solid wood substrate 2.

[0023] The solid wood substrate 2 is the main structure of the flooring and serves as its impact-resistant structural layer. It is primarily used to resist external forces such as impacts and collisions, thereby enhancing the flooring's strength. The panel veneer 21, upper transverse layer 22, solid wood core layer 23, lower transverse layer 24, and bottom veneer 25 are all made of solid wood, which is environmentally friendly, durable, and highly breathable. They are bonded with formaldehyde-free adhesive and formed into a multi-layer structure through high-temperature and high-pressure molding, which enhances the flooring's toughness and further strengthens its impact resistance. The wear-resistant layer 11 increases the wear resistance of the flooring surface and has a decorative function, thereby further improving the flooring's service life and aesthetics. The moisture-proof layer 32 prevents moisture and dampness from the cement flooring from eroding the solid wood substrate 2. The upper balancing plate 12 and lower balancing plate 31 serve as padding layers for pressing the wear-resistant layer 11 and the moisture-proof layer 32, protecting the internal stress balance of the solid wood substrate 2.

[0024] In this embodiment, the wear-resistant layer 11 is made of melamine-impregnated paper. Melamine-impregnated paper has the advantages of being wear-resistant, heat-resistant, pollution-resistant, impact-resistant, fire-resistant, and mildew-resistant, as well as being aesthetically pleasing, available in various styles, and economical and practical.

[0025] In this embodiment, the upper balancing plate 12 and the lower balancing plate 31 are made of water-resistant and heat-resistant explosion-proof fiber material. The explosion-proof fiber is made of polypropylene as raw material through a special process. It is mixed evenly with other refractory materials, formed, and then baked. As the baking temperature continues to rise, when it reaches a certain temperature, the fiber begins to soften, shrink, and melt, eventually forming pores and carbonizing. These pores are distributed in the construction body to form a micro-network of pores, which can open water and air channels, reduce internal stress, prevent cracking, and improve the overall service life. Even if the solid wood substrate 2 changes in a humid environment or underfloor heating environment, the upper balancing plate 12 and the lower balancing plate 31 will not change in size. Therefore, it can simultaneously prevent the cracking of solid wood flooring in a geothermal environment and the bubbling phenomenon in a humid environment.

[0026] In this embodiment, the solid wood core layer 23 is made of pine wood. Pine wood is durable, elastic, breathable, has good thermal conductivity, and is easy to maintain. The upper transverse layer 22 and the lower transverse layer 24 are made of eucalyptus veneer. Eucalyptus wood is relatively flexible and has good impact resistance and stability. The wood grain direction of the solid wood core layer 23 is intersected with the wood grain direction of the upper transverse layer 22 and the lower transverse layer 24, which can improve the toughness of the floor and further enhance its impact resistance, preventing the floor from warping.

[0027] Furthermore, such as Figure 3 , Figure 4As shown, the upper horizontal layer 22 and the lower horizontal layer 24 are respectively provided with cross-arranged horizontal ribs 221 and vertical ribs 222. The upper and lower surfaces of the solid wood core layer 23 are provided with cross-arranged horizontal grooves 231 and vertical grooves 232. The horizontal ribs 221 and vertical ribs 222 on the upper horizontal layer 22 and the lower horizontal layer 24 are respectively connected to the horizontal grooves 231 and vertical grooves 232 on the upper and lower surfaces of the solid wood core layer 23.

[0028] The cross-shaped transverse ribs 221 and longitudinal ribs 222 enhance the structural strength of the upper transverse layer 22 and the lower transverse layer 24, while increasing the bonding area with the solid wood core layer. This improves the deformation resistance of the upper transverse layer 22 and the lower transverse layer 24, as well as the connection strength with the solid wood core layer 23, further enhancing the stress deformation resistance of the solid wood substrate 2 and preventing problems such as warping and cracking of the solid wood substrate 2.

[0029] In this embodiment, the moisture-proof layer 32 is a styrene-based thermoplastic elastomer. This material not only has a good moisture-proof effect, but also has a certain elasticity, which can improve the shock absorption effect of the wood floor.

[0030] The processing flow of this utility model is as follows: First, the solid wood core layer 23 is coated with environmentally friendly formaldehyde-free glue on both sides. Then, the upper horizontal layer 22 and the lower horizontal layer 24 are respectively covered on the top and bottom sides. After stacking to a certain height, it is sent to a cold press for pressurization at a pressure of 8-10 kg / cm² for about 1 hour. Then, the pressure is released, and it is sanded to a fixed thickness to obtain a substrate core composed of solid wood core layer 23, upper horizontal layer 22, and lower horizontal layer 24. Then, the substrate core is coated with environmentally friendly formaldehyde-free glue on both sides. The panel veneer 21 and the bottom veneer 25 are attached to the top and bottom sides of the substrate core. After stacking to a certain height, it is sent to a cold press for pressurization. Then, the pressure is released, and it is sent to a hot press for high-temperature and high-pressure hot pressing at a temperature of 125°C for 20-30 minutes. Finally, the pressure is released and it is allowed to balance and cure to obtain a solid wood substrate 2 composed of panel veneer 21, upper horizontal layer 22, solid wood core layer 23, lower horizontal layer 24, and bottom veneer 25.

[0031] Next, the solid wood substrate 2 is repaired by filling cracks or holes with bone glue or putty. After the bone glue or putty dries, the solid wood substrate 2 is sanded to a certain thickness to obtain a standard solid wood substrate 2.

[0032] Next, the wear-resistant layer 11 and the upper balance plate 12, and the moisture-proof layer 32 and the lower balance layer 31 are pressed together under high temperature and high pressure, with a pressure between 16-20 kg / cm², a temperature between 180-190℃, and a time between 18-22 seconds, to obtain the panel 1 and the base plate 2.

[0033] Finally, apply glue to both sides of the solid wood substrate 2, place the panel 1 and the baseboard 3 on the top and bottom of the solid wood substrate 2 respectively, and press them with a cold press at a pressure of 7-9 kg / cm² for 30-50 minutes. After depressurization, a floorboard blank with a balance plate is obtained. Then, the floorboard blank is sent to a hot press for hot pressing at a pressure of 6-7 kg / cm², a temperature of 125℃, and a time of 4-6 minutes. After high-temperature treatment, it also needs to go through processes such as balancing curing, splitting, tongue and groove cutting, tongue and groove sealing wax, beveling and painting, and packaging. Finally, a new three-layer solid wood flooring that is suitable for both northern and southern climates and is both moisture-proof and resistant to underfloor heating environments is obtained.

Claims

1. A new three-layer solid wood flooring resistant to underfloor heating and moisture, comprising a solid wood substrate (2), wherein the solid wood substrate (2) is provided with a top panel (1) and a bottom panel (3) on its upper and lower surfaces, characterized in that: The panel (1) includes a wear-resistant layer (11) and an upper balance plate (12). The upper balance plate (12) is bonded between the wear-resistant layer (11) and the solid wood substrate (2). The solid wood substrate (2) includes a panel veneer (21), an upper horizontal layer (22), a solid wood core layer (23), a lower horizontal layer (24), and a bottom veneer (25) bonded together from top to bottom. The bottom plate (3) includes a lower balance plate (31) and a moisture-proof layer (32). The lower balance plate (31) is bonded between the moisture-proof layer (32) and the solid wood substrate (2).

2. The new three-layer solid wood flooring with resistance to underfloor heating and moisture as described in claim 1, characterized in that: The wear-resistant layer (11) is melamine-impregnated adhesive film paper.

3. The new three-layer solid wood flooring with resistance to underfloor heating and moisture as described in claim 1, characterized in that: The upper balance plate (12) and the lower balance plate (31) are made of explosion-proof fiber material.

4. The new three-layer solid wood flooring with resistance to underfloor heating and moisture as described in claim 1, characterized in that: The wood grain direction of the solid wood core layer (23) is intersected with the wood grain direction of the upper transverse layer (22) and the lower transverse layer (24).

5. A new three-layer solid wood flooring resistant to underfloor heating and moisture-proof according to claim 4, characterized in that: The upper transverse layer (22) and the lower transverse layer (24) are respectively provided with cross-arranged transverse ribs (221) and longitudinal ribs (222). The upper and lower surfaces of the solid wood core layer (23) are provided with cross-arranged transverse grooves (231) and longitudinal grooves (232). The transverse ribs (221) and longitudinal ribs (222) on the upper transverse layer (22) and the lower transverse layer (24) are respectively connected to the transverse grooves (231) and longitudinal grooves (232) on the upper and lower surfaces of the solid wood core layer (23).

6. The new three-layer solid wood flooring with resistance to underfloor heating and moisture as described in claim 1, characterized in that: The moisture-proof layer (32) is a styrene-based thermoplastic elastomer.

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