Laminated floor with water blocking connection system and production method thereof

Abstract

The invention relates to the technical field of laminate flooring, in particular to a laminate flooring with a water blocking connecting system and a production method thereof, the laminate flooring comprises a flooring block, a male tenon edge band and a female tenon edge band, and the male tenon edge band and the female tenon edge band are respectively bonded on two opposite side vertical surfaces of the flooring block; the male tenon edge band comprises a male tenon edge band body, one side face of the male tenon edge band body is a male tenon bonding face, the other side face of the male tenon edge band body is a male tenon connecting face, and a connecting strip is arranged on the male tenon connecting face. The female tenon edge sealing strip comprises a female tenon edge sealing strip body, one side face of the female tenon edge sealing strip body is a female tenon bonding face, the other side face of the female tenon edge sealing strip body is a female tenon connecting face, and a connecting groove is formed in the female tenon connecting face. The connecting strips and the connecting grooves are arranged in the axial direction of the side vertical faces, mechanical locking between the two floor blocks can be achieved through clamping matching of the connecting strips and the connecting grooves, and at the moment, the male tenon connecting faces are attached to the female tenon connecting faces. The waterproof edge banding of the cutting section of the laminate flooring and the arrangement of a connecting system can be simultaneously realized.

Description

Technical Field

[0001] The present application relates to the technical field of laminate flooring, specifically to a laminate flooring with a water-blocking connection system; the present application also relates to a production method for the laminate flooring with a water-blocking connection system. Background Art

[0002] Laminate flooring, also known as impregnated paper laminated wood flooring, usually consists of a wear-resistant layer, a decorative layer, a high-density fiberboard and a balancing (moisture-proof) layer. High-density fiberboard is a man-made board made by hot-pressing wood fibers and adhesives. Compared with solid wood materials or multi-layer composite boards, it has higher water absorption. The surface of the laminate flooring is bonded and covered with decorative paper and wear-resistant paper, and the back is bonded and covered with balancing (moisture-proof) paper. All three papers are waterproof, so the setting of the three papers greatly improves the waterproof performance of the laminate flooring.

[0003] The four sides of the laminate floor are milled to form a connection system, which is generally a lock structure. The lock structure is formed by milling after hot pressing and pasting three papers, so the material part of the high-density fiberboard at the lock structure is exposed to the outside. For example, the Chinese invention patent application with publication number CN114575551A and titled "Floor and method for manufacturing floor" discloses a connection part, which is at least partially realized by the substrate of the floor, and the connection part allows mechanical locking between two such floors. Since the connection part is partially realized by the substrate, the connection part also has a high water absorption due to the material properties of the substrate.

[0004] In the technical solutions provided by the prior art, the problem of high water absorption of the connection part can be overcome by coating and wax sealing. For example, a coating method for a locking system is disclosed in a Chinese invention patent application with publication number CN115043015A and titled "A coating device for a floor locking system". Another example is a wax sealing method for a locking system is disclosed in a Chinese invention patent application with publication number CN116460938A and titled "Locking processing device for ultra-micro solid wood floor".

[0005] However, the special shapes inside the lock structure are very complex and precise. When laminating, the moisture-proof film may not adhere tightly to the wood surface in some areas, which makes the water-blocking effect of the laminating treatment unsatisfactory. In addition, the moisture-proof film has a certain thickness, which will affect the lock fit, such as making it difficult to assemble or making noise after assembly. The wax layer formed by the sealing wax is easy to fall off, and the water-blocking effect of the wax layer itself is not ideal. Summary of the invention

[0006] Although high-density fiberboard has high water absorption, which makes it easy to absorb water vapor in the air, or it is easy to absorb water quickly after contacting water, which eventually causes the high-density fiberboard to expand. However, the inventors have found that high-density fiberboard also has good adhesion. In other words, compared with solid wood floors, laminate flooring has stronger hygroscopicity and is more likely to expand when contacting water, but the cut section of laminate flooring has better adhesion performance and is easier to form a strong and stable bonding connection with other accessories.

[0007] Based on the above findings, the present application designs and provides a laminate floor with a water-blocking connection system, which can simultaneously achieve waterproof edge sealing of the cut section of the high-density fiberboard and the setting of the connection system by bonding male and female tenon edge sealing strips with waterproof functions on the side elevations of the floor blocks. The present application specifically adopts the following technical solutions: A laminate floor with a water-blocking connection system comprises a floor block, a male-tenon edge banding strip and a female-tenon edge banding strip, wherein the male-tenon edge banding strip and the female-tenon edge banding strip are respectively bonded to two opposite side elevations of the floor block; the male-tenon edge banding strip comprises a male-tenon edge banding strip body, one side of the male-tenon edge banding strip body is a male-tenon bonding surface, the other side of the male-tenon connecting surface is provided with a connecting strip; the female-tenon edge banding strip comprises a female-tenon edge banding strip body, one side of the female-tenon edge banding strip body is a female-tenon bonding surface, the other side of the female-tenon connecting surface is provided with a connecting groove; the connecting strip and the connecting groove are both arranged along the axial direction of the side elevation, and the snap-fitting of the connecting strip and the connecting groove can realize mechanical locking between the two floor blocks, and at this time, the male-tenon connecting surface and the female-tenon connecting surface are in contact with each other.

[0008] Preferably, the connecting strip comprises an upper cylindrical strip and a lower cylindrical strip, and the cross-sectional shape of the connecting groove is the same as the cross-sectional shape of the connecting strip.

[0009] As a further preference, the upper cylindrical strip and the lower cylindrical strip are connected to form a concave arc connecting surface on the facade.

[0010] Preferably, the male tenon edge banding strip and the female tenon edge banding strip are PVC edge banding strips, ABS edge banding strips or PP edge banding strips.

[0011] Preferably, the thickness of the connecting strip is not greater than 5 mm.

[0012] Preferably, the side facade has, from top to bottom, an upper side portion, a mounting groove and a lower side portion arranged along the axial direction of the side facade, and the male tenon bonding surface and the female tenon bonding surface are respectively attached to the inner wall surfaces of the mounting grooves opened on two opposite side facades.

[0013] As a further preference, when the connecting strip is snap-fitted with the connecting groove, there is a gap of not less than 0.6 mm between the lower portions of the side surfaces arranged on the two opposite side facades.

[0014] As a further preference, compared with the bottom wall of the installation groove, the outer facade of the lower part of the side surface is recovered inwardly by 0.2mm-0.3mm.

[0015] As a further preference, the lower portion of the mounting groove is connected to the lower portion of the side surface via a triangular groove.

[0016] A method for producing the aforementioned laminate flooring with a water-blocking connection system, Providing the floorboards, and applying glue on the side facades of the floorboards; Providing an edge banding strip, processing the connecting strip or the connecting groove on one side of the edge banding strip to obtain the male tenon edge banding strip or the female tenon edge banding strip accordingly, and at the same time, the side becomes the male tenon connecting surface or the female tenon connecting surface, and the other side becomes the male tenon bonding surface or the female tenon bonding surface; The male tenon bonding surface or the female tenon bonding surface is bonded to the side elevation surface.

[0017] To sum up, compared with the prior art, the laminate flooring with a water-blocking connection system and the production method thereof provided by the present application have at least the following advantages: by bonding male and female tenon edge banding strips with waterproof functions to the side facades of the floor blocks, it is possible to simultaneously achieve the waterproof edge banding and connection system setting of the cut section of the high-density fiberboard; at the same time, there are relatively mature equipment and process methods for edge banding the side facades of high-density fiberboards with relatively regular shapes. Therefore, the production method of the product provided by the present application does not require major changes to the process flow and equipment of the prior art, and can basically use the production equipment of the prior art.

[0018] Furthermore, the PVC, ABS, PP and other materials used in the edge banding strips of the prior art have a certain structural strength, which can fix the positional relationship between adjacent floorboards when the floorboards shrink and avoid misalignment. At the same time, they have a certain elasticity, which can adapt to the new size specifications of the floorboards when the floorboards expand and avoid arching. In other words, it is only necessary to design a suitable structure and shape of the connecting strip to basically replace the function of the original locking system. The connecting strip is waterproof and can be easily and firmly bonded to the side elevation of the floorboard. Of course, among PVC, ABS and PP, ABS is preferred.

[0019] As an additional advantage, the male and female tenon edge bands are not easily damaged by knocks, thus solving the technical problem in the prior art that the locking system of the laminate floor is easily damaged, thus affecting the assembly efficiency and assembly effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 A schematic structural diagram of a laminate floor with a water-blocking connection system provided in Example 1 of the present application.

[0022] Figure 2 A front view of the male-tenon edge banding provided in Example 1 of the present application.

[0023] Figure 3 A front view of the female tenon edge banding strip provided in Example 1 of the present application.

[0024] Figure 4 A schematic flow chart of a method for producing a laminate floor with a water-blocking connection system provided in Example 1 of the present application.

[0025] Figure 5 A front view of the male-tenon edge banding provided in Example 2 of the present application.

[0026] Figure 6 A front view of the female tenon edge banding strip provided in Example 2 of the present application.

[0027] Figure 7 A front view of the male-tenon edge banding provided in Example 3 of the present application.

[0028] Figure 8 A front view of the female tenon edge banding strip provided in Example 3 of the present application.

[0029] Fig. 9 A schematic diagram of the coordination between the male and female edge bands after expansion of the floorboards provided in Example 3 of the present application. DETAILED DESCRIPTION

[0030] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of this application. Example

[0031] Reference Figure 1 The laminate floor with a water-blocking connection system shown in the figure comprises a floor block 100, a male-tenon edge banding strip 200 and a female-tenon edge banding strip 300, wherein the male-tenon edge banding strip 200 and the female-tenon edge banding strip 300 are respectively bonded to two opposite side elevations of the floor block 100. In this embodiment, bonding the male-tenon edge banding strip 200 and the female-tenon edge banding strip 300 to the side elevations of the long sides of the floor block 100 is taken as an example.

[0032] The floor block 100 is made by pressing and covering the surface of a high-density fiberboard sawed into a rectangular shape with decorative paper and wear-resistant paper, and pressing and covering the back side with balancing paper. It has four flat side elevations.

[0033] Reference Figure 2 As shown, the male tenon edge banding strip 200 is a PVC edge banding strip, which includes a male tenon edge banding strip body 210, one side of the male tenon edge banding strip body 210 is a male tenon bonding surface 220, and the other side is a male tenon connecting surface 230, and the male tenon connecting surface 230 has a connecting strip 240. The connecting strip 240 includes an upper cylindrical strip 241 and a lower cylindrical strip 242, and the upper cylindrical strip 241 and the lower cylindrical strip 242 are connected to form a concave arc connecting surface 243 at the facade.

[0034] Reference Figure 3 The female tenon edge banding strip 300 is a PVC edge banding strip, which includes a female tenon edge banding strip body 310, one side of the female tenon edge banding strip body 310 is a female tenon bonding surface 320, and the other side is a female tenon connecting surface 330, and a connecting groove 340 is provided on the female tenon connecting surface 330. The cross-sectional shape of the connecting groove 340 is the same as the cross-sectional shape of the connecting strip 240.

[0035] Reference Figure 4As shown, the bonding of the male tenon edge banding strip 200, the female tenon edge banding strip 300 and the floor block 100 is implemented using the equipment of the prior art. The conveying device of the equipment can provide the floor block 100, and the edge banding strip 400 is provided on the side elevation of one side of the floor block 100. At this time, the edge banding strip 400 is a PVC edge banding strip with a certain width, thickness, and continuity. Of course, it can also be an ABS edge banding strip, as long as it has a certain elasticity and can be milled. The material can be used. Subsequently, the gluing mechanism applies glue to the side elevation of the floor block 100 to be edge-sealed this time. The applied adhesive is generally a thermosetting adhesive. At the same time, the milling mechanism makes a connecting strip 240 on a side of the edge banding strip 400 away from the floor block 100 by milling. The thickness of the connecting strip 240 is 3mm. In order to avoid the edge banding strip 400 being too thick, the thickness of the connecting strip 240 should not exceed 5mm. The side is defined as the male tenon connection surface 230, and the other side is defined as the male tenon bonding surface 220. At this time, the edge banding strip 400 is processed into the male tenon edge banding strip 200 described in the embodiment. The pulling belt mechanism and the leaning belt mechanism can bring the male tenon edge banding strip 200 closer to the floor block 100, and make the male tenon bonding surface 220 bonded to the side elevation of the floor block 100 to be edge-sealed this time, so that the male tenon edge banding strip 200 is bonded to a side elevation of the floor block 100, and the connecting strip 240 is arranged along the axial direction of the side elevation.

[0036] As the floor block 100 continues to be fed, the side elevation on the other side of the floor block 100 is edge-sealed. Specifically, the conveying device continues to supply the floor block 100, and the edge banding strip 400 is provided on the side elevation on the other side of the floor block 100. Subsequently, the gluing mechanism applies glue to the side elevation of the floor block 100 to be edge-sealed this time. At the same time, the milling mechanism makes a connection groove 340 on one side of the edge banding strip 400 away from the floor block 100 by milling, and defines the side as the female tenon connection surface 330, and the other side as the female tenon bonding surface 320. At this time, the edge banding strip 400 is processed into the female tenon edge banding strip 300 described in the embodiment. The pulling belt mechanism and the leaning belt mechanism can bring the female tenon edge banding strip 300 closer to the floor block 100, and make the female tenon bonding surface 320 bonded to the side vertical surface of the floor block 100 to be edge-sealed this time, so that the female tenon edge banding strip 300 is bonded to a side vertical surface of the floor block 100, and the connecting groove 340 is arranged along the axial direction of the side vertical surface.

[0037] Through the above, the laminate floor with a water-blocking connection system of this embodiment can be prepared.

[0038] As is known to all, before the edge banding process is performed, the side elevation of the floor block 100 is pre-milled to form an upper chamfer connected to the surface and a lower chamfer connected to the bottom surface. During the process of bonding and curing the edge banding strips 200, 300 to the side elevation, the edge banding strips 200, 300 are deformed by the action of hot air and can form a semi-bracket shape on the bonding surface 220, 230 that is adapted to the upper chamfer, the side elevation and the lower chamfer.

[0039] Take two identical floorboards 100, and mechanical locking between the two floorboards 100 can be achieved through the snap fit between the connecting strip 240 and the connecting groove 340, and at this time, the male tenon connecting surface 230 and the female tenon connecting surface 330 are in contact. Since the PVC material has a certain elasticity, the snap fit between the connecting strip 240 and the connecting groove 340 can be achieved through plug-in action. Example

[0040] The difference between this embodiment and embodiment 1 is that the male tenon edge banding strip 200 and the female tenon edge banding strip 300 are PP edge banding strips. Figure 5 , Figure 6 As shown, the side elevation of the floor block 100 has, from top to bottom, an upper side portion 110, a mounting groove 120, and a lower side portion 130 arranged along the axial direction of the side elevation. The upper side portion 110 is an area defined on the floor block 100 by the upper chamfer and the top wall of the mounting groove 120. The middle part (middle elevation) of the side elevation in the thickness direction is retreated to the inside of the floor block 100 by a certain thickness to form a new side elevation part, which is connected to the upper side portion 110 and the lower side portion 130 through a pair of inclined surfaces, respectively, so as to form an open mounting groove 120 with a flared trapezoidal cross section. The lower side portion 130 is an area defined on the floor block 100 by the lower chamfer, the top wall of the mounting groove 120, and the lower elevation between the two.

[0041] The upper side portion 110 , the mounting groove 120 and the lower side portion 130 may be manufactured in advance by milling, or may be manufactured online by milling.

[0042] In order to enable the male tenon edge banding strip 200 and the female tenon edge banding strip 300 to be embedded in the installation groove 120, it is necessary to additionally mill the male tenon bonding surface 220 and the female tenon bonding surface 320 to form the same shape as the inner wall surface of the installation groove 120, so that after the male tenon edge banding strip 200 and the female tenon edge banding strip 300 are embedded, the male tenon bonding surface 220 and the female tenon bonding surface 320 can both be in contact with the inner wall surface of the installation groove 120.

[0043] Preferably, compared with the farthest point of the upper side portion 110 in the lateral direction, the lower elevation of the lower side portion 130 retreats inward by a distance of 0.3mm-0.5mm, so that when the connecting strip 240 is snap-fitted with the connecting groove 340, there is a gap of not less than 0.6mm between the lower side portions 130 arranged on two opposite side elevations. Example

[0044] The difference between this embodiment and embodiment 1 is that the male tenon edge banding strip 200 and the female tenon edge banding strip 300 are ABS edge banding strips. Figure 7 , Figure 8 As shown, the upper side portion 110 is an area defined on the floor block 100 by the upper chamfer and the top wall of the mounting groove 120. The middle part (middle elevation) of the thickness direction of the side elevation is retreated to the inside of the floor block 100 by a certain thickness to form a new side elevation part, and the part of the side elevation is connected to the upper side portion 110 through an inclined surface, so as to form a mounting groove 120 with a flared cross section and open in two directions. The mounting groove 120 is connected to the triangular groove 140. The lower side portion 130 is an area defined on the floor block 100 by the lower wall, the lower elevation and the lower chamfer of the triangular groove 140. Therefore, compared with the groove bottom wall of the mounting groove 120, the outer elevation of the lower side portion 130 is retracted inward by 0.2mm-0.3mm.

[0045] In order to enable the male tenon edge banding strip 200 and the female tenon edge banding strip 300 to be embedded in the installation groove 120, it is necessary to additionally mill the male tenon bonding surface 220 and the female tenon bonding surface 320 to form the same shape as the inner wall surface of the installation groove 120, so that after the male tenon edge banding strip 200 and the female tenon edge banding strip 300 are embedded, the male tenon bonding surface 220 and the female tenon bonding surface 320 can both be in contact with the inner wall surface of the installation groove 120.

[0046] Preferably, at the lower edges of the male tenon bonding surfaces 220 and the female tenon bonding surfaces 320 of the male tenon edge banding strip 200 and the female tenon edge banding strip 300, milling processing is performed to form a male tenon buckle edge 250 and a female tenon buckle edge 350 that can extend into the triangular groove 140. The male tenon buckle edge 250 and the female tenon buckle edge 350 are both triangular convex ridges protruding above the bonding surfaces 220, 320, and have a hypotenuse that is bonded to the triangular groove 140 and a right-angled side extending from the lower bottom surface of the male tenon edge banding strip 200 and the female tenon edge banding strip 300.

[0047] More preferably, the triangular groove 140 has an acute angle of 55°--60°, and correspondingly, the male tenon edge 250 and the female tenon edge 350 have an acute angle of 28°--30°.

[0048] Reference Fig. 9As shown, by the cooperation between the male and female tenon buckle edges 250 and 350 and the triangular groove 140, when the floorboard 100 expands due to moisture absorption or water absorption, the male and female tenon edge banding strips 200 and 300 can adapt to the new size specification of the floorboard 100 by their own elasticity and can also adapt to the larger expansion by extrusion deformation. The part deformed by extrusion can enter the gap between the pair of side lower parts 130.

[0049] The above description is intended to be illustrative and not limiting. Many embodiments and many applications beyond the examples provided will be apparent to those skilled in the art upon reading the above description. Therefore, the scope of the present teachings should not be determined with reference to the above description, but rather with reference to the appended claims and the full scope of equivalents to which such claims are entitled. For the purpose of comprehensiveness, all articles and references, including the disclosures of applications and publications, are incorporated herein by reference. The omission of any aspect of the subject matter disclosed herein in the preceding claims is not intended to be a waiver of such subject matter, nor should it be considered that the applicant has not considered such subject matter to be part of the disclosed subject matter of the application.

Claims

1. A laminate floor with a water-blocking connection system, characterized in that: The invention comprises a floor block (100), a male-tenon edge banding strip (200) and a female-tenon edge banding strip (300), wherein the male-tenon edge banding strip (200) and the female-tenon edge banding strip (300) are respectively bonded to two opposite side elevations of the floor block (100); the male-tenon edge banding strip (200) comprises a male-tenon edge banding strip body (210), one side surface of the male-tenon edge banding strip body (210) is a male-tenon bonding surface (220), and the other side surface is a male-tenon connecting surface (230), and the male-tenon connecting surface (230) has a connecting strip (240); the female-tenon edge banding strip (300) comprises a female-tenon An edge banding strip body (310), wherein one side of the female tenon edge banding strip body (310) is a female tenon bonding surface (320), and the other side is a female tenon connecting surface (330), and a connecting groove (340) is provided on the female tenon connecting surface (330); the connecting strip (240) and the connecting groove (340) are both arranged along the axial direction of the side elevation, and the snap-fitting of the connecting strip (240) and the connecting groove (340) can achieve mechanical locking between the two floorboards (100), and at this time, the male tenon connecting surface (230) and the female tenon connecting surface (330) are in contact with each other.

2. The laminate flooring with a water-blocking connection system according to claim 1, characterized in that: The connecting strip (240) comprises an upper cylindrical strip (241) and a lower cylindrical strip (242), and the cross-sectional shape of the connecting groove (340) is the same as the cross-sectional shape of the connecting strip (240).

3. The laminate flooring with a water-blocking connection system according to claim 2, characterized in that: The upper cylindrical strip (241) and the lower cylindrical strip (242) are connected to each other, and a concave arc connecting surface (243) is formed on the outer facade.

4. The laminate flooring with a water-blocking connection system according to claim 1, characterized in that: The male tenon edge banding strip (200) and the female tenon edge banding strip (300) are PVC edge banding strips, ABS edge banding strips or PP edge banding strips.

5. The laminate flooring with a water-blocking connection system according to claim 1, characterized in that: The thickness of the connecting strip (240) is no greater than 5 mm.

6. The laminate flooring with a water-blocking connection system according to claim 1, characterized in that: The side elevation has, from top to bottom, an upper side portion (110), a mounting groove (120), and a lower side portion (130) arranged along the axial direction of the side elevation, and the male tenon bonding surface (220) and the female tenon bonding surface (320) are respectively in contact with inner wall surfaces of the mounting groove (120) provided on two opposite side elevations.

7. The laminate flooring with a water-blocking connection system according to claim 6, characterized in that: When the connection strip (240) is snap-fitted with the connection groove (340), a gap of not less than 0.6 mm exists between the side lower portions (130) arranged on two opposite side elevations.

8. The laminate flooring with a water-blocking connection system according to claim 6, characterized in that: Compared to the groove bottom wall surface of the installation groove (120), the outer facade surface of the lower side portion (130) is retracted inward by 0.2 mm to 0.3 mm.

9. The laminate flooring with a water-blocking connection system according to claim 8, characterized in that: The lower portion of the installation groove (120) and the lower portion of the side surface (130) are connected via a triangular groove (140).

10. A method for producing a laminate flooring with a water-blocking connection system as claimed in claim 1, characterized in that: Providing the floorboard (100), and applying glue on the side elevation surface of the floorboard (100); Providing an edge banding strip (400), processing the connecting strip (240) or the connecting groove (340) on one side of the edge banding strip (400) to obtain the male tenon edge banding strip (200) or the female tenon edge banding strip (300) accordingly, and the side becomes the male tenon connecting surface (230) or the female tenon connecting surface (330), and the other side becomes the male tenon bonding surface (220) or the female tenon bonding surface (320); The male tenon bonding surface (220) or the female tenon bonding surface (320) is bonded to the side elevation surface.

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