WO2008080278A1

WO2008080278A1 - A double layer seamless wood composite floor

Info

Publication number: WO2008080278A1
Application number: PCT/CN2007/001862
Authority: WO
Inventors: Yong Zhang
Original assignee: Yong Zhang
Priority date: 2006-12-29
Filing date: 2007-06-13
Publication date: 2008-07-10
Also published as: CN1995657A; CN100389242C

Abstract

A double layer seamless wood composite floor and a manufacturing method thereof are provided, wherein the floor comprises a board body (3) which is composed of a surface layer (1) and a stress equalization layer (2), a tenon (4) and a groove (5) are provided at the side of the board body (3), an edge angle (8) of the board body (3) at the groove side is a right angle without chamfering, an edge angle (6) of the board body (3) at the tenon side is an angle (A) less than or equal to 90 degree, and back troughs (7) are set at the board bottom for relieving stress.

Description

Two-layer solid wood seamless composite floor and manufacturing method thereof

The invention relates to a two-layer solid wood seamless composite floor and a manufacturing method thereof, and belongs to the technical field of wooden floors. Background technique

In the prior art, when the solid wood floor is manufactured, the corners of the male and female sides of the board body usually have a chamfer of a certain radius, and the chamfering refers to processing the edge of the side of the side of the board into an arc. Or beveled shape. The height of the chamfer is usually between 0.2 and 2 mm, which is due to the limitation of the processing technology, such as the bending of the edge when the tongue is made, and the residual paint on the side of the wooden floor when painting, which leads to the joint between the wooden floors during the installation. The connection position is large, it is easy to accumulate dust and bacteria, and affects the beauty of the wooden floor, so the chamfering can make the solid wood floor more compact. Due to the change of temperature and humidity of solid wood materials throughout the year, the wood will have a natural phenomenon of expansion and contraction. If ordinary solid wood flooring does not have a certain gap, the stress between the wooden floors during expansion will be large, and even damage will occur. Therefore, the ordinary solid wood flooring can not be completely seamlessly spliced, and there will be a gap between the two wooden floors that can be seen by the naked eye. Summary of the invention

It is an object of the present invention to provide a two-layer solid wood seamless composite floor and a method of making same. The solid wood floors can be seamlessly joined together and the effects of stress on the solid wood floor expansion can be eliminated.

According to a first aspect of the invention, a two-layer solid wood seamless composite floor, comprising a plate body, the side of the plate body is provided with a male and female body, the plate body is divided into a surface layer and a stress balance layer, and the plate body is The corners of the cymbal and the female are at a right angle to the chamfer; a back groove for stress relief is provided on the back of the plate.

Preferably, in the above two-layer solid wood seamless composite floor, the thickness of the surface layer is 2 - 6 mm, and the thickness of the stress balance layer is 4 - 15 mm. Preferably, in the above two-layer solid wood seamless composite floor, the surface layer is made of high quality wood floor wood, and the stress balance layer is made of multi-layer birch.

Preferably, in the above two-layer solid wood seamless composite floor, the angle of the side of the male side of the plate body is 88. ~ 90°.

Preferably, in the above two-layer solid wood seamless composite floor, the depth of the back groove is 2 to 10 mm.

According to another aspect of the present invention, a method for manufacturing a two-layer solid wood seamless composite floor is provided, wherein a surface layer of a wooden floor is first made of high quality wood, a stress balance layer is made of a birch, and a surface layer and a stress balance layer are adhered. After obtaining the plate body, the plate body is sanded and painted, and then the tongue-and-groove structure on the side of the plate body is produced.

Preferably, in the above-mentioned two-layer solid wood seamless composite floor manufacturing method, when the painted wooden floor board body is subjected to the tongue-and-groove processing, two sets of blades are used for processing, and the first set of blades is used to make the mouth of the tongue and the mouth. The mother layer, the paint layer leaving the surface of the board is processed on the second set of blades to obtain a seamless composite floor.

A major problem to be solved with seamless wood flooring is that the sides of the panels that are obtained during the production of the tongue are not compactly joined together. In the present invention, the corners of the plate body on the side of the male and female sides are formed at a right angle of zero chamfering, so that the plate body is closely spliced, and the gap between the plates is less than 30 micrometers, which cannot be observed by the naked eye, and is installed. The wooden floor is just like a whole piece, beautiful and generous, so it is called seamless solid wood floor.

In addition, in the present invention, since the surface of the wooden floor is formed by a plurality of lacquers, a thin layer of paint is formed on the surface, and the density of the paint layer is high, the hardness is good, and the lacquer is higher than the other parts under the wooden floor. After the completion of the production of the mouth, the mouth can be smooth and detailed, and the paint remaining on the side of the wooden floor can be removed. Therefore, the wooden floor of the present invention is very flat, and the gap between the installed wooden floors is very small, which cannot be observed by the naked eye, and it is not easy to accumulate dust and breed bacteria.

Another major problem to be solved with seamless wood flooring is how to eliminate the stress generated by the expansion of solid wood flooring. The solid wood material is different from the reinforced floor material processed by the manual method. The solid wood has a certain expansion ratio. If the splicing is too compact, the wooden floor will be damaged during the expansion, so the ordinary solid wood floor cannot produce the seamless wooden floor. In the present invention, the wooden floor is divided into two layers, and the upper layer is a surface layer, which can be composed of each from the original forest. Made of precious high-quality wood, the thickness of the surface layer is 2 - 6 mm, which can fully reflect the comfortable, beautiful and noble quality of high-quality wood flooring wood. The following is the stress balance layer made of birch composite layer. The expansion rate of birch is very small. Therefore, the stress of the wooden floor can be eliminated. At the same time, considering the difference between the material of the surface layer and the stress balance layer, the expansion ratio is also different. If the surface layer is deformed a little, the two ends of the wooden floor will be tilted up. Therefore, the back groove is opened on the back of the stress balance layer to eliminate different materials. The resulting stress; when the wood floor is heated and the humidity is increased, it can also transfer heat energy and store moisture in the back groove, further reducing the influence of stress. Moreover, the lower layer is made of birch, which also saves a lot of original high-quality wood, reduces the cherished cherished forest trees, and is more environmentally friendly.

Therefore, compared with the prior art, the invention has zero chamfering on the side of the wooden floor, has no gaps in the splicing, is elegant and elegant, and can eliminate the stress of the solid wood material and has the advantages of long service life. DRAWINGS

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a schematic illustration of a two-layer solid wood seamless composite floor structure in accordance with a preferred embodiment of the present invention;

Fig. 2 is a diagram showing the state of the mouthpiece processing according to a preferred embodiment of the present invention. detailed description

Next, a preferred embodiment of the present invention will be described with reference to the accompanying drawings.

First, as shown in Fig. 1, the two-layer solid wood seamless composite floor of the present invention comprises a plate body 3, which is divided into a face layer 1 and a stress balance layer 2. The side of the plate body 3 is formed with a male cymbal 4 and a female cymbal 5, and the corners 6 and the corners 8 of the plate body 3 on the side of the male cymbal 4 and the female cymbal 5 are at right angles to which they are chamfered. Here, "zero chamfering" means that no chamfering is made on the corners 6, so that no gap can be seen when the wooden floor is spliced. In addition, a back groove 7 is provided on the back surface of the plate body 3 for stress relief.

In a preferred embodiment of the present invention, the surface layer 1 has a thickness of 2 - 6 mm for the use of the wood floor, the stress balance layer 2 has a thickness of 4 to 15 mm, and the back groove 7 has a depth of 2 - 10 mm. Millimeter. Moreover, in the present invention, the side of the wooden floor is curved The curvature is not more than 30 microns, and the height difference between the two plates 3 is not more than 20 microns, so that the wooden floor can be spliced without seeing a gap, achieving a seamless effect.

Further, in the preferred embodiment of the present invention, the seamless effect is better for the splicing of the panel 3, and the angle A of the corner 6 of the panel 3 on the side of the knob 4 is less than 90. Sharp angle. Thus, even if there are some slight errors in the processing of the side of the wooden floor panel 3, the panel 3 can be spliced well.

Moreover, in some preferred embodiments of the invention, the angle A of the corner 6 of the plate 3 on the side of the male cymbal 4 is set to 88. ~ 90°, so that the splicing effect of the plate 3 is best.

Next, a preferred embodiment of the method for producing a two-layer solid wood seamless composite floor of the present invention will be described with reference to the flow chart shown in FIG.

First, the plate body 3 is produced. Firstly, the top layer 1 of the wooden floor is made of high-quality wood (such as teak, oak, black walnut, red sandalwood and other precious woods with better quality than birch), the stress balance layer 2 is made of birch, and the stress balance layer 2 is composed of multiple layers. The birch is compounded, and then the top layer 1 and the stress balance layer 2 are bonded to each other to obtain the plate body 3.

Then, the plate body 3 is sanded and painted. After the back groove 7 and the like are processed on the back surface, the tongue-and-groove structure on the side of the plate body 3 is formed.

Further, in the present invention, since the surface of the wooden floor is subjected to a plurality of lacquers, a thin layer of paint layer is formed on the surface, and the paint layer 9 has a high density and a good hardness as compared with other portions under the wooden floor. Therefore, during processing, as shown in FIG. 2, when the painted wooden floor panel 3 is subjected to the tongue-and-groove processing, two sets of blades are used for processing, and the first set of blades is used to produce the male gong 4 and the female 榫 5 of the tongue-and-groove. The paint layer leaving the surface of the plate 3 is processed on the second set of blades to obtain a seamless composite floor.

The present invention has been described above by way of specific embodiments, but the present invention is not limited to the above embodiments. It is to be understood by those skilled in the art that various changes and modifications can be made in the present invention without departing from the scope of the invention.

Claims

Rights request:

1. A two-layer solid wood seamless composite floor, comprising a plate body (3), the side of the plate body (3) is provided with a male weir (4) and a female weir (5), characterized in that: the plate body (3) The surface layer (1) and the stress balance layer (2); the corners (8) of the plate body (3) on the side of the mother raft (5) are at right angles to the chamfer; on the side of the gong (4) The corner (6) of the plate (3) is zero chamfered and its angle (A) is less than or equal to 90. ; The back groove (7) for stress relief is provided on the back of the plate (3).

2. The two-layer solid wood seamless composite floor according to claim 1, wherein: the surface layer (1) has a thickness of 2 to 6 mm, and the stress balance layer (2) has a thickness of 4 to 15 mm.

3. The two-layer solid wood seamless composite floor according to claim 1, characterized in that: the surface layer (1) is made of high quality wood floor wood, and the stress balance layer (2) is made of multi-layer birch.

The two-layer solid wood seamless composite floor according to claim 4, wherein the angle (A) of the corner (6) of the plate body (3) on the side of the male cymbal (4) is 88°~ 90°.

5. The two-layer solid wood seamless composite floor according to claim 1, wherein: the back groove (7) has a depth of 2 to 10 mm.

The method for manufacturing a two-layer solid wood seamless composite floor according to any one of claims 1 to 5, characterized in that: the surface layer (1) of the wooden floor is first made of high quality wood, and the stress balance is made with birch wood. Layer (2), the surface layer (1) and the stress balance layer (2) are bonded to obtain a plate body (3), and the plate body (3) is sanded and painted, and then the plate body is produced (3) ) The side of the tongue and mouth structure.

The method for manufacturing a two-layer solid wood seamless composite floor according to claim 6, wherein: when the painted wooden floor panel (3) is subjected to the tongue-and-groove processing, two sets of blades are used for processing, the first group The blade is made of the male (4) and the female (5) of the tongue, and the paint layer leaving the surface of the plate (3) is processed on the second set of blades to obtain a seamless composite floor.