CN213868717U - Floor block or wall panel - Google Patents

Abstract

The application relates to a floor block or a wall panel, comprising: the honeycomb substrate comprises an upper plate body, a lower plate body and a honeycomb core layer; a finishing layer; buckling; go up the plate body and be formed with the buckle between the plate body down and inlay the caulking groove, the side of going up the plate body and the side of the plate body down inlay horizontal dislocation arrangement of caulking groove department at the buckle, the top surface and the bottom surface of buckle have different width dimension on the direction of depth, the buckle imbeds the buckle and inlays the caulking groove, and with last plate body or lower plate body welding or bonding fixed, the last side cell wall that buckles top surface area 90% and buckle inlay the caulking groove leans on with arranging, buckle bottom surface area 90% at least and buckle inlay the lower side cell wall of caulking groove and lean on arranging. This application can be in the firm buckle structure of honeycomb substrate side position fixed position for the installation of can all splicing fast of the floor block of various materials or shingle nail homoenergetic.

Description

Floor block or wall panel

Technical Field

The application relates to the field of ground and wall decoration, in particular to a floor block or a wall panel.

Background

By searching, we have found a solution to construct floor boards or wall panels by applying and fixing a veneer layer on the surface of a honeycomb panel. However, due to structural limitations, the floor boards or wall panels of such honeycomb substrates cannot be neatly configured with the snap structures by themselves, which causes inconvenience to the installation work thereof.

The present application is hereby presented.

Disclosure of Invention

The technical problem that this application will solve is: the floor block or the wall panel is formed by compounding the honeycomb substrate and the veneer layer, the structure of the honeycomb substrate is optimized, and therefore the buckle structure with the fixed position at the side edge of the honeycomb substrate can be fixed, and the floor block or the wall panel made of various materials can be spliced and installed quickly.

The technical scheme of the application is as follows:

a floor or wall panel comprising:

a honeycomb substrate, comprising: the honeycomb sandwich plate comprises an upper plate body, a lower plate body and a honeycomb sandwich layer, wherein the lower plate body is arranged below the upper plate body in parallel;

the decorative layer is fixed on the upper surface of the upper plate body; and

buckling;

the honeycomb core layer is characterized in that a buckle embedded groove located on the lateral portion of the honeycomb core layer is formed between the upper plate body and the lower plate body, the lateral side of the upper plate body and the lateral side of the lower plate body are horizontally arranged in a staggered mode at the buckle embedded groove, so that the upper side groove wall and the lower side groove wall of the buckle embedded groove have different depths, the top surface and the bottom surface of the buckle have different width sizes in the depth direction, the buckle is embedded into the buckle embedded groove and is welded or bonded and fixed with the upper plate body or/and the lower plate body, at least 90% of the surface area of the top surface of the buckle is attached to the upper side groove wall of the buckle embedded groove, and at least 90% of the surface area of the bottom surface of the buckle is attached to the lower side groove wall of the buckle embedded groove.

On the basis of the technical scheme, the application also comprises the following preferable scheme:

the top outer side of the buckle is arranged in parallel with the side edge of the upper plate body.

The bottom outer side edge of the buckle is arranged in parallel with the side edge of the lower plate body.

The top outer side of the buckle is integrally provided with a positioning raised line which protrudes upwards and is horizontally abutted against the outer side of the side edge of the upper plate body.

The bottom outer side edge of the buckle is integrally provided with a positioning raised line which protrudes downwards and is horizontally abutted against the outer side of the side edge of the lower plate body.

The buckle is adhered or welded with the upper plate body or/and the lower plate body.

The buckle, the upper plate body and the lower plate body are made of metal materials, and the buckle is fixedly welded with the upper plate body or/and the lower plate body.

The decorative layer is a wood board, a marble board, a ceramic tile board, a plastic board, decorative paper, decorative cloth or a coating layer.

The application can realize the following beneficial effects:

1. this application sets up honeycomb substrate's upper and lower plate body area increase, perhaps reduces the setting with middle honeycomb sandwich layer area to form the buckle inlay groove that is located the honeycomb sandwich layer lateral part between the corresponding side of the upper and lower plate body, thereby the side of the upper and lower plate body is at buckle inlay groove department level dislocation arrangement moreover, thereby make buckle inlay groove's upside cell wall and downside cell wall have different depths, with top surface and bottom surface of equidimension on the matching buckle. Thus, after the assembly is completed, the top surface of the buckle is basically and completely arranged to be attached to the upper side groove wall of the buckle embedding groove, the bottom surface of the buckle is basically and completely attached to the lower side groove wall of the buckle embedding groove, and the upper surface and the lower surface of the buckle are basically and completely covered and fixed by the upper plate body and the lower plate body of the honeycomb substrate, so that the possibility that the upper plate body or the lower plate body of the honeycomb substrate is pressed, bent and deformed due to the stress of the buckle is reduced.

2. When the four sides of the rectangular honeycomb substrate are provided with the buckle embedding grooves with the structures, the upper plate body and the lower plate body are only required to be set to be the same in size, and the upper plate body and the lower plate body are arranged in a staggered mode in the length direction and the width direction (along the diagonal direction), so that the rectangular honeycomb substrate is convenient to implement.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings of the embodiments will be briefly introduced below, and it is apparent that the drawings in the following description only relate to some embodiments of the present application and are not limiting on the present application.

Fig. 1 is a partial structural sectional view of a floor panel in the first embodiment of the present application.

Fig. 2 is an exploded view of fig. 1.

Fig. 3 is a schematic cross-sectional structure of the floor board in the width direction in the first embodiment of the present application.

Fig. 4 is a schematic cross-sectional structure of the floor board along the length direction in the first embodiment of the application.

Fig. 5 is a schematic exploded view of a floorboard according to one embodiment of the present invention, wherein the finishing layer is removed.

Fig. 6 is a schematic cross-sectional view of a wall panel according to a second embodiment of the present invention.

Fig. 7 is a schematic perspective view of a three-honeycomb substrate according to an embodiment of the present application.

Fig. 8 is a schematic structural diagram of an upper plate of a three-honeycomb substrate according to an embodiment of the present application in a separated state.

Fig. 9 is an enlarged view of the X1 portion of fig. 8.

Fig. 10 is a schematic structural view of the lower plate of the three honeycomb substrates of the embodiment of the present application in a separated state.

Fig. 11 is an enlarged view of the X2 portion of fig. 10.

Fig. 12 is a schematic structural diagram of an upper plate of a four-honeycomb substrate according to an embodiment of the present application in a separated state.

Fig. 13 is a schematic structural view of the lower plate of the four-honeycomb substrate according to the embodiment of the present application in a separated state.

Wherein: 1-substrate, 2-finishing coat, 3-fastener and 4-wall surface;

101-upper plate body, 102-lower plate body, 103-honeycomb core layer, 104-buckle embedding groove, 104 a-upper side groove wall of buckle embedding groove, 104 b-lower side groove wall of buckle embedding groove, 1031-metal sheet, 1032-punching bulge, 1031 a-upper surface of metal sheet, 1032 a-lower surface of punching bulge, 10321-cylindrical groove, 10322-cylindrical groove, 10323-inner hole of cylindrical punching bulge, 10321 a-top end groove wall of cylindrical groove, 10322 a-bottom end groove wall of cylindrical groove, 3 a-male buckle, 3 b-female buckle, 301-top surface of buckle, 302-bottom surface of buckle, 303-positioning convex strip and W-depth.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings of the embodiments of the present application. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the application without any inventive step, are within the scope of protection of the application.

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this application belongs. The use of the terms "a" or "an" and the like in the description and in the claims of the present application do not denote a limitation of quantity, but rather denote the presence of at least one.

In the description of the present specification and claims, the terms "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present application and simplifying the description, but do not indicate or imply that the referred device or unit must have a specific direction, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.

Embodiments of the present application will now be described with reference to the accompanying drawings.

The first embodiment is as follows:

referring to fig. 1 and 2, the floor board of the present embodiment is mainly composed of a honeycomb substrate 1 at a lower layer, a finishing layer 2 at an upper layer, and a fastener 3 (commonly called a floor buckle) fixed at a side position of the honeycomb substrate 1. When the floor block is installed indoors (or outdoors), the decorative layer 2 on the upper layer is exposed in the environment for people to tread and walk, so that the decorative layer has a decorative function and also has good wear resistance. The veneer layer 2 is typically a marble, tile, wood or plastic board, including relatively soft rubber, plastic boards. The finishing layer 2 is in this embodiment a wood board and the thickness of the wood board is only a few millimeters. In addition, the finishing layer 2 may be a paint layer formed of an abrasion resistant paint applied to the upper surface of the substrate.

The above-described honeycomb substrate 1 also includes, as in the conventional honeycomb panel: the honeycomb plate comprises an upper plate body 101, a lower plate body 102 arranged below the upper plate body in parallel, and a honeycomb core layer 103 fixedly connected between the upper plate body and the lower plate body. The finishing layer 2 is attached to the upper surface of the upper plate 101 and is adhesively fixed to the upper plate 101 by an adhesive. Of course, the upper and lower plate bodies and the honeycomb core layer can also be welded and fixed.

Referring again to fig. 1 and 2, unlike the conventional honeycomb panel, the area of the honeycomb core layer 103 in the honeycomb substrate 1 is smaller than the areas of the upper and lower plate bodies 101 and 102, and each side edge of the honeycomb core layer 103 is located inside the corresponding side edge of the upper and lower plate bodies 101 and 102, so that a snap-fit groove 104 located at the side portion of the honeycomb core layer is formed between the upper and lower plate bodies 101 and 102. Also, the side edge of the upper plate body 101 and the side edge of the lower plate body 102 are horizontally disposed at the snap-fit groove 104 in a staggered manner such that the upper groove wall 104a and the lower groove wall 104b of the snap-fit groove 104 have different depths W. By "horizontal offset" is meant a distance in the horizontal direction.

The top surface 301 and the bottom surface 302 of the clip 3 have different width dimensions in the aforementioned depth W direction — the width of the clip 3 is the same direction as the depth of the clip-fitting groove 104. The clip 3 is fitted into the clip fitting groove 104, and the clip portion fitted into the aforementioned clip fitting groove 104 is welded and fixed to the upper and lower plate bodies 101 and 102, and at least 90% of the area of the top surface 301 of the clip 3 is placed in abutment with the upper groove wall 104a of the clip fitting groove 104, and at least 90% of the area of the bottom surface 302 of the clip 3 is placed in abutment with the lower groove wall 104b of the clip fitting groove 104.

Further, in the present embodiment, 95% of the area of the top surface 301 of the clip 3 is disposed abutting against the upper groove wall 104a of the clip fitting groove 104. 100% of the area of the bottom surface 302 of the clip 3 is disposed against the lower groove wall 104b of the clip-fitting groove 104, and the bottom outer side of the clip 3 is disposed flush with the side of the lower plate body 101. In some other embodiments of the present application, the top outer side of the clip 3 may be arranged flush with the side of the upper plate 101, and the top surface 301 of the clip 3 is arranged to abut against the upper groove wall 104a of the clip-engaging groove 104 in its entirety (100% area).

The clip 3 may be welded to only one of the upper plate 101 and the lower plate 102. The advantage of so designing lies in: the assembly efficiency of buckle and honeycomb substrate 1 has been promoted. But has the defects that: the connection strength of the clip and the honeycomb substrate 1 is slightly poor.

Alternatively, an adhesive may be applied to the clip 3, and the clip portion fitted into the clip fitting groove 104 may be fixed to the upper plate 101 and/or the lower plate 102 by the adhesive.

In this embodiment, the honeycomb substrate 1 is a honeycomb aluminum plate, the upper plate 101 and the lower plate 102 are both aluminum plates, and the honeycomb core layer 103 in the middle is an aluminum honeycomb. The buckle 3 is made of aluminum alloy and is formed by cutting aluminum alloy sections. Of course, the honeycomb substrate 1 and the fasteners 3 may also be made of other materials, for example, the fasteners 3 may be integrally formed plastic members, and the finishing layer 2 may be a tile board, a wood board, or a plastic board.

When the floor block is installed indoors (or outdoors), the upper surface of the decorative layer 2 is exposed in the environment for people to step on, so that the decorative layer has a decorative function and good wear resistance. The veneer layer 2 is typically a marble, tile, wood or plastic board, including relatively soft rubber, plastic boards. Further, the finishing layer 2 may be a paint layer formed of paint applied to the upper surface of the substrate. In the present embodiment, the facing layer 2 is a marble plate adhesively fixed to the upper surface of the honeycomb substrate 1.

In the manufacturing process of this floor block, when inlaying buckle 3 in buckle inlaying groove 104, the inlaying depth of buckle 3 is difficult to control, and this position that leads to buckle 3 on each floor block is not unified, and then leads to each floor block to link together the back, and the gap between adjacent floor blocks is not of uniform size, influences beautifully. Even the severe situation may result in the panels being unable to be assembled together.

On this basis, in the present embodiment, the positioning protrusion 303 protruding upward is integrally provided on the top outer side of each clip 3, and the positioning protrusion 303 on the top outer side of each clip 3 and the corresponding side of the upper plate 101 abut against each other in the horizontal direction — the positioning protrusion is disposed on the outer side of the corresponding side of the upper plate, which is why 5% of the area of the top surface 301 of each clip 3 is not disposed against the upper groove wall 104a of the clip fitting groove 104.

During assembly, the buckle 3 is aligned with the buckle embedding groove 104 and inserted inwards, and when the positioning raised line 303 on the buckle 3 abuts against the corresponding side edge of the upper plate body and cannot be further inserted, the installation of the buckle 3 is in place.

Obviously, the positioning convex strip 303 on the buckle 3 can not only position the embedded depth of the buckle 3, but also position the embedded angle of the buckle 3 very accurately.

In some other embodiments of the present application, a positioning protruding strip protruding downward and horizontally abutting against the outer side of the lower plate 102 may also be integrally disposed on the outer side of the bottom of the buckle 3, so as to accurately position the insertion depth and angle of the buckle 3.

Referring to fig. 3 to 5, in the present embodiment, the upper plate body 101 and the lower plate body 102 are rectangular plates having the same size, each side of the upper plate body 101 is arranged in parallel with the corresponding (two) sides of the lower plate body 102, and the upper plate body 101 and the lower plate body 102 are arranged in a staggered manner in the width and length directions — the sides of the upper plate body and the lower plate body are not vertically aligned. Moreover, the buckle embedding grooves 104 are formed between each side edge of the upper plate body 101 and the corresponding side edge of the lower plate body 102, so that there are four buckle embedding grooves 104, and each buckle embedding groove 104 is embedded with one buckle 3 of the above structure, so that there are four buckles 3.

In the embodiment, two of the four buckles 3 on the side edge of the floor board are set as male buckles 3a, and the other two buckles are set as female buckles 3b matched with the male buckles 3 a. Specifically, one of the male buckles 3a and one of the female buckles 3b are respectively disposed on two long sides of the upper plate 101 (also long sides of the lower plate), and the other one of the male buckles 3a and the other one of the female buckles 3b are respectively disposed on two short sides of the upper plate 101 (also short sides of the lower plate). By "adapted" is meant: the male buckle 3a and the female buckle 3b detached from the honeycomb substrate 1 can be engaged with each other. Therefore, any two floor blocks with the structure can be directly spliced and fixed with each other to form a large-area floor system.

In the present embodiment, the terms "horizontal", "up" and "down" are used with reference to fig. 1.

Example two:

fig. 6 shows a concrete embodiment of the wall panel of the present application, which has the same structure as the floor boards in the first embodiment, except that the present embodiment uses it as a wall panel, and the first embodiment uses it as a floor board.

The wall panel can be fixed on the outer wall surface of a building to serve as an outer wall panel, and can also be arranged on the inner wall surface of the building to serve as an inner wall panel.

When the wall surface system is installed, the wall surface plates with the male buckle and the female buckle on the side edges can be mutually spliced and fixed, each wall surface plate can be installed and positioned by taking the previous wall surface plate as a foundation, the installation of the wall surface system is facilitated, and the formed wall surface system has good structural integrity and attractiveness.

The decorative layer of the wall panel can be decorative paper or decorative cloth besides the marble plate, the ceramic tile plate, the wood plate, the plastic plate or the coating layer in the first embodiment, wherein the decorative cloth is preferably flocked cloth with heat preservation and moisture resistance.

Example three:

referring to fig. 7 to 11, the floor boards in this embodiment have substantially the same structure as the first embodiment, and the main difference is that the honeycomb core layer of the honeycomb substrate in this embodiment adopts another structure, so that the bonding area and bonding strength between the honeycomb core layer 103 and the upper board body 101 and the lower board body 102 are improved, and the possibility of the upper board body and the lower board body being separated from the honeycomb core layer is specifically as follows:

the honeycomb core layer 103 is made of a thin metal sheet 1031 and a plurality of downwardly protruding stamping protrusions 1032 stamped out of the metal sheet so as to be integrally formed on the metal sheet. The upper surface 1031a of the metal plate 1031 abuts against (the lower surface of) the upper plate body 101 and is adhesively fixed thereto, and the lower surface 1032a of the press projection 1032 abuts against (the upper surface of) the lower plate body 102 and is adhesively fixed thereto.

Considering that the upper surface of the lower plate body 102 is a planar structure, in order to increase the contact and bonding area of each stamping protrusion 1032 with the lower plate body 102, the present embodiment provides the lower surface 1032a of each stamping protrusion 1032 as a planar structure, and the lower surface 1032a of each stamping protrusion 1032 is arranged in the same plane.

Considering that the lower surface of the upper plate body 101 is also of a planar structure and the lower surface of the upper plate body 101 is parallel to the upper surface of the lower plate body 102, in order to increase the contact and adhesion area of the metal sheet 1031 to the upper plate body 101, the present embodiment further provides the upper surface 1031a of the metal sheet 1031 as a planar structure arranged in parallel to the lower surface 1032a of the stamping protrusion 1032.

Moreover, the sum of the areas of the lower surfaces 1032a of the stamping protrusions 1032 is equal to the area of the upper surface 1031a of the metal sheet 1031, so that the sum of the adhering areas of all the stamping protrusions 1032 and the lower plate body 102 is equal to the adhering area of the metal sheet 1031 and the upper plate body 101, the total adhering area of the honeycomb core layer is uniformly distributed, the connecting force between the honeycomb core layer 103 and the upper plate body 101 is equal to the connecting force between the honeycomb core layer 103 and the lower plate body 102, and the bonding force between the plate body on one side and the honeycomb core layer 103 is prevented from being obviously smaller than the bonding force between the plate body on the other side and the honeycomb core layer 103.

In this embodiment, the stamping protrusions 1032 are uniformly distributed in a matrix. And each punching boss 1032 is a circular cylindrical shape, and the circular cylindrical punching boss 1032 has formed therein: a cylindrical groove 10321 with an open bottom and a closed top, and a circular cylindrical groove 10322 with an open top and a closed bottom and surrounding the cylindrical groove. The upper surface of the top groove wall 10321a of the cylindrical groove 10321 abuts against and is adhesively fixed to the upper plate body 101, and the lower surface 1032a of the punched projection 1032 is formed on the bottom groove wall 10322a of the annular cylindrical groove 10322.

In order to improve the bonding area and bonding strength of the top end groove wall 10321a of the cylindrical groove and the upper plate body 101, the present embodiment sets the top end groove wall 10321a of the cylindrical groove 10321 to be a planar structure, and the upper surface of the top end groove wall 10321a of the cylindrical groove 10321 is arranged flush with the upper surface of the metal sheet 1031 — the upper surface of the top end groove wall 10321a of the cylindrical groove may be regarded as a part of the upper surface of the metal sheet 1031.

The method of manufacturing the honeycomb substrate will now be briefly described: a plurality of stamping protrusions 1032 projecting in the same direction in the thickness direction of the metal sheet 1031 are punched out of the metal sheet 1031 (by a circular cylindrical stamping head), and then the upper surface 1031a of the metal sheet 1031 is brought into contact with and adhesively fixed to the upper plate body 101, and the lower surface 1032a of each stamping protrusion 1032 is brought into contact with and adhesively fixed to the lower plate body 102.

In this embodiment, the annular cylindrical groove 10322 has a radial width gradually decreasing from the notch toward the groove bottom to facilitate the demolding of the press mold.

The metal sheet 1031 is preferably an aluminum sheet having good ductility, and the thickness thereof is generally selected to be 0.02 to 1 mm.

Example four:

referring to fig. 12 and 13, the floor board of the present embodiment has substantially the same structure as the third embodiment, and the main difference is that: the outer contour of each punch protrusion 302 in the honeycomb core layer is cylindrical.

Obviously, the stamping protrusion 302 may have other shapes, such as a polygonal prism shape.

However, the stamping protrusions 302 are preferably configured in the shape of circular columns in the third embodiment, so that the number of vertical supporting arms between the upper plate and the lower plate can be increased, and the bearing strength of the honeycomb substrate can be further improved.

It should be noted that in some other embodiments of the present application, the floor boards or wall panels can be made in other shapes, such as triangular, hexagonal, fan-shaped, and even various shapes. Moreover, the above-mentioned buckle 3 is not necessarily arranged on each side of the floor board or the wall panel, and the buckle 3 may be arranged on at least one side according to actual needs, and it is of course preferable that at least one side is provided with a male buckle, and at least another side is provided with a female buckle. Moreover, when a plurality of male buttons 3a and a plurality of female buttons 3b are provided on one floor board, each male button 3 may have a different structure, and each female button may also have a different structure, for example, the floor board disclosed in chinese patent application No. CN101910528B has two long sides respectively provided with a male button and a female button which are mutually matched in a manner of turning at an oblique angle, and two short sides respectively provided with a male button and a female button which are mutually matched in a manner of vertical displacement, which obviously is not excluded by the claims of the present application.

The above are exemplary embodiments of the present application only, and are not intended to limit the scope of the present application, which is defined by the appended claims.

Claims (8)

1. A floor panel or wall panel, comprising:

a honeycomb substrate (1) comprising: the honeycomb plate comprises an upper plate body (101), a lower plate body (102) arranged below the upper plate body in parallel, and a honeycomb core layer (103) fixedly connected between the upper plate body and the lower plate body;

a finishing layer (2) fixed to the upper surface of the upper plate (101); and

a buckle (3);

a buckle embedding groove (104) located at the side part of the honeycomb core layer is formed between the upper plate body (101) and the lower plate body (102), the side edge of the upper plate body (101) and the side edge of the lower plate body (102) are horizontally arranged at the buckle embedding groove (104) in a staggered manner, so that the upper groove wall (104a) and the lower groove wall (104b) of the buckle embedding groove (104) have different depths (W), the top surface (301) and the bottom surface (302) of the buckle (3) have different width sizes in the depth direction, the buckle (3) is embedded into the buckle embedding groove (104) and is welded or adhered and fixed with the upper plate body (101) or/and the lower plate body (102), at least 90% of the area of the top surface (301) of the buckle (3) is arranged to be attached to the upper groove wall (104a) of the buckle embedding groove (104), at least 90% of the surface (302) of the bottom of the clip (3) is arranged in contact with the lower groove wall (104b) of the clip-engaging groove (104).

2. -floor panel or wall panel according to claim 1, characterized in that the top outer side of the clasp (3) is arranged flush with the side of the upper panel (101).

3. -floor panel or wall panel according to claim 1, characterized in that the bottom outer side of the clasp (3) is arranged flush with the side of the lower plate (102).

4. -floor panel or wall panel according to claim 1, characterized in that the top outer side of the clasp (3) is integrally provided with a positioning bead (303) projecting upwards and resting horizontally against the outer side of the upper panel (101).

5. -floor panel or wall panel according to claim 1, characterized in that the bottom outer side of the clasp (3) is integrally provided with a positioning bead (303) projecting downwards and resting horizontally against the outer side of the lower plate (102).

6. -floor panel or wall panel according to claim 1, characterized in that said clasp (3) is glued or welded to said upper panel (101) or/and said lower panel (102).

7. -floor panel or wall panel according to claim 6, characterized in that said clasp (3), said upper panel (101) and said lower panel (102) are all made of metal, said clasp (3) being welded to said upper panel (101) or/and said lower panel (102).

8. -floor panel or wall panel according to claim 1, characterized in that the finishing layer (2) is a wood board, marble board, tile board, plastic board, decorative paper, decorative cloth or a paint layer.

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