The present invention relates to a floor panel, wherein the floor panel has a joining member adhered to the floor panel in an offset relationship, and in particular, to a floor panel in which the bottom surface of the joining member and the bottom surface of the floor panel are essentially flush which each other.
Floor panels for use in floating floor systems typically comprise a top layer and a bottom layer adhered together in an offset relationship such that a substantially L-shaped marginal end portion of a top surface of the bottom layer and a substantially L-shaped marginal end portion of a bottom surface of the top layer are exposed. The top layer typically comprises at least one mix layer, a print film, a wear layer, and a top coat. The bottom layer typically comprises at least one mix layer. The bottom layer has a thickness about equal to or greater than the top layer. A ratio of a thickness of the top layer to a thickness of the bottom layer is typically in the range of about 2 or less. For example, the SURFACE SOURCE product sold by Lowe's Home Centers, Inc. has a top layer with a thickness of about 64 mils (about 1.63 millimeters), and a bottom layer with a thickness of about 61 mils (about 1.55 millimeters). Thus, the ratio of the thickness of the top layer to the bottom layer is about 1.05 (64 mils/61 mils=1.05).
In order to assemble the floating floor system, at least one of the marginal end portions of each of the floor panels is provided with an adhesive. The marginal end portion provided with the adhesive is engaged with the marginal end portion of an adjacent floor panel to form the floating floor system. The floor panels may be formed, for example, such that when the floating floor system is assembled on a sub-floor ends of the top layers of the adjacent floor panels substantially abut, while ends of the bottom layers of the adjacent floor panels are spaced apart a desired distance so that a gap is formed there between. Alternatively, the floor panels may be formed, for example, such that when the floating floor system is assembled on the sub-floor the ends of the top layers of the adjacent floor panels substantially abut and the ends of the bottom layers of the adjacent floor panels substantially abut.
Because the thickness of the bottom layer is significantly large (about 98 mils (about 2.5 millimeters)), when the floor panels are assembled such that a gap is formed between the ends of the bottom layers of the adjacent floor panels, the gap can telescope through the floor panels thereby significantly altering the aesthetic and structural characteristics of the top layer. For example, the gaps may cause deformation at a top surface of the top layer. Alternatively, when the floor panels are assembled such that the ends of the bottom layers of the adjacent floor panels substantially abut, unwanted gaps or overlapping can occur between the ends of the top layers due to deviations in the size of the marginal end portions and/or errors occurring during installation. These unwanted gaps or overlaps can additionally telescope through the floor panel thereby also significantly altering the aesthetic and structural characteristics of the top layer.
Additionally, the marginal end portions of the top layer of a first row of the floor panels, which are typically positioned adjacent a wall, remain unsupported when the floating floor system is assembled, because the marginal end portions of the top layer of the first row of the floor panels will not engage with an adjacent floor panel. Thus, because the thickness of the bottom layer is significantly large, the gap occurring between the sub-floor and the marginal end portion of the top layer will also negatively impact the aesthetic and structural characteristics of the top layer. For example, deformation at the top surface of the top layer can occur. Also, because the bottom layer and the top layer comprise mix layers, which contain fillers, the bottom layer and the top layer are prone to absorb moisture thereby further affecting the aesthetic and structural characteristics of the floor panels. This is particularly problematic, since the bottom layer is installed directly on a sub-floor.
Still further, because the bottom layer has a thickness greater than the top layer, when the floor panels are stacked, for example, during shipping, a space exists between the marginal end portions of the top layer of the adjacent flooring panels equal to the thickness of the bottom layer. Thus, during shipping, the unsupported marginal end portions of the top layer are prone to bend and/or curl an amount equal to the thickness of the bottom layer. Because of the structural characteristics of the top layer and the “vinyl memory” of the panels, these bends and/or curls remain in the marginal end portions of the top layer during installation and can thereby significantly alter the aesthetic and structural characteristics of the floor panel. For example, deformation can occur at the top surface of the top layer and/or the bond strength between the marginal end portions of the adjacent floor panels could be negatively affected.
In an attempt to provide better visuals for the flooring system, co-pending U.S. patent application Ser. No. 12/412,419 discloses a floor panel and a floating floor system incorporating the floor panel include a floor panel having a top layer and a bottom layer. The top layer has a top surface and a bottom surface. The top surface has a visible decorative pattern. The bottom layer has a top surface and a bottom surface. The top surface of the bottom layer is adhered to the bottom surface of the top layer such that the bottom layer is offset from the top layer in a direction of length and width and a marginal end portion of the top surface of the bottom layer and a marginal end portion of the bottom surface of the top layer is exposed. At least one of the marginal end portions has an adhesive, and a ratio of a thickness of the top layer to a thickness of the bottom layer is about 5 or greater. Because the thickness of the bottom layer of the floor panels is significantly less than the thickness of the top layer, when the adjacent floor panels are engaged, any unwanted gaps or overlapping that may occur between the first and second ends of the bottom layers of the adjacent floor panels due to deviations in the size of the marginal end portions and/or errors occurring during installation will minimize the aesthetic and/or structural characteristics of the top layer. However, this solution requires a bottom layer that almost completely covers a bottom side of the top layer with a bottom layer of rigid vinyl PVC film or some vinyl composite material of certain thickness to create the ship lap structure. This demands a significant amount of back material as well as adhesive to attach the bottom layer to the top layer. In addition, most of the liner use on the bottom layer must be stripped off and thrown away during the assembly process. The assembly of such large bottom layer onto the top layer is difficult and labor intensive and the use of the rigid bottom layer, which is harder than the top layer itself, may cause the offset lines from the bottom layer to transfer visual imprint defects to the top layer.
In view of the foregoing, there still remains a need to develop a floor panel that overcomes the above-described problems. Additionally, there still remains a need to simplify the manufacturing process for such floor panels and reduce the expense associated therewith.
An exemplary embodiment of a floor panel includes a top surface and a bottom surface. The top surface has a visible decorative pattern and the bottom surface has a recess which extends about the periphery of the bottom surface. The recess has a recess surface. The floor panel includes a joining member with a top surface and a bottom surface. The top surface of the joining member is adhered to the recess surface of the recess. The bottom surface of the joining member and the bottom surface of the floor panel are essentially flush which each other. The use of the joining member does not create any imprints on the top surface of the floor panel.
An exemplary embodiment of a floor panel for use in a floating flooring system has a top surface and a bottom surface. The top surface has a visible decorative pattern and the bottom surface has recesses which extend about the periphery of the bottom surface. The recesses have recess surfaces with recess thicknesses which are substantially less than a thickness of the floor panel. The floor panel includes joining members with top surfaces and bottom surfaces. The joining members are positioned in the recesses with the top surfaces of the joining members being adhered to the recess surfaces of the recesses by an adhesive. The thickness of each recess is essentially equivalent to the thickness of the respective joining member and adhesive provided therein. The bottom surfaces of the joining members and the bottom surface of the floor panel are essentially flush which each other such that the use of the joining members does not create any imprints on the top surface of the floor panel.
An exemplary embodiment of a floating floor system includes at least two adjacent floor panels. Each of the floor panels has a top surface and a bottom surface. The bottom surface has recesses which extend about the periphery of the bottom surface. The recesses having recess surfaces and recess thicknesses which are substantially less than a thickness of the floor panel. Joining members of the floor panels are positioned in the recesses. The joining members have top surfaces and bottom surfaces, with the top surfaces of the joining members being adhered to the recess surfaces of the recesses by an adhesive. The thickness of each recess being essentially equivalent to the thickness of the respective joining member and adhesive provided therein. The bottom surfaces of the joining members and the bottom surface of the floor panel being essentially flush which each other. The joining members of one respective floor panel are offset from the floor panel to expose marginal portions of the top surfaces of the offset joining members. Respective recesses of a second adjacent floor panel have exposed recess surfaces. At least one of the exposed marginal portions or the exposed recess surfaces has an adhesive. The exposed marginal end portions of the joining members of one respective floor panel are adhered to the exposed recess surfaces of the recesses of the second adjacent floor panel.
Other features and advantages of the present invention will be apparent from the following more detailed description of the exemplary embodiment, taken in conjunction with the accompanying drawings which illustrate, by way of example, the principles of the invention.
In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of various embodiments. However, those skilled in the art will understand that the embodiments may be practiced without these specific details, that the embodiments are not limited to the depicted embodiments, and that the embodiments may be practiced in a variety of alternative embodiments. In other instances, well known methods, procedures, and components have not been described in detail.
Further, various operations may be described as multiple discrete steps performed in a manner that is helpful for understanding the embodiments. However, the order of description should not be construed as to imply that these operations need be performed in the order they are presented, or that they are even order-dependent. Moreover, repeated usage of the phrase “in an embodiment” does not necessarily refer to the same embodiment, although it may. Lastly, the terms “comprising,” “including,” “having,” and the like, as used in the present application, are intended to be synonymous unless otherwise indicated.
The floor panel 10 has a top surface 14 with a visible decorative pattern and a bottom surface 15. In the illustrated exemplary embodiment, the floor panel 10 comprises at least one mix layer, a print film provided with the visible decorative pattern, a wear layer, and a top coat, respectively. It will be appreciated by those skilled in the art that although the floor panel 10 is shown and described herein as comprising multiple layers that the floor panel 10 may alternatively comprise a single layer. Additionally, the types of layers constituting the floor panel 10 and the visible decorative pattern could be varied depending on the desired characteristics of the floor panel 10.
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In the illustrated exemplary embodiment, the recesses 11 are substantially rectangular in shape. Recesses 11 along the long side of the floor panel 10 have a length LR1, while recesses 11 along the short side of the floor panel 10 have a length LR2. The width WR of the recesses 11 may vary depending upon the width WT of the floor panel 10. In the exemplary embodiment shown, the width WR of the recesses is about 1 inch (about 2.54 centimeters). It will be appreciated by those skilled in the art that the geometrical shape, including the length LR and the width WR of the recesses 11 of the floor panel 10 may be varied. For example, the width WR of the recesses may be less than 1 inch or more than 1 inch, including, but not limited to, about 1½ inches, about 2 inches, or wider or any measurement inbetween.
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As shown in the exemplary embodiment, the joining members 12 may be in strips which can be cut to the appropriate length to be positioned in respective recesses 11 on the long side of the floor panel 10 or on the short side of the floor panel 10. Alternatively, the joining members 12 may be cut into L-shaped members which can be inserted into one long side recesses and one short side recesses of the floor panel 10.
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In the illustrated exemplary embodiment, each strip of joining member 12 is substantially rectangular in shape and has the length LB1 of about 36 inches (about 91.4 centimeters) or a length LB2 of about 6 inches (about 15.2 centimeters). The width of the strips of joining member 12 is about 2 inches (3.1 centimeters). However, it will be appreciated by those skilled in the art that the geometrical shape and the length the width of the strips of joining member 12 may be varied depending on the desired dimension and geometrical configuration of the recesses 11 of the floor panel 10.
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It will be appreciated by those skilled in the art that the adhesive 20 may also be provided on the surfaces 16 of the recesses 11 instead of or in addition to the top surfaces 18 of the joining members 12 depending on the type and characteristics of the adhesive 20 used to achieve optimum adhesion and bond strength when adhering the adjacent floor panels 10, as described in more detail below with reference to
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Because the thickness TB of the joining members 12 of the floor panels 10 is significantly less than the thickness TT of the floor panel 10, when the adjacent floor panels 10 are engaged, any unwanted gaps or overlapping that may occur between the first and second ends 22, 24 of the joining members 12 of the adjacent floor panels 10 due to deviations in the size of the marginal end portions and/or errors occurring during installation will not impact the aesthetic and/or structural characteristics of the floor panel 10. Also, the size of any gaps occurring between the sub-floor and the unsupported marginal end portions of the floor panel 10 of a first row of the floor panels 10 is reduced. Therefore, by reducing the thickness TB of the joining members 12, deformation at the top surface 18 of the floor panel 10 can be prevented. Additionally, because the thickness TB of the joining members 12 is smaller than the thickness TT of the floor panel 10, when the floor panels 10 are stacked, for example, during shipping, the distance between the unsupported marginal end portions of the adjacent floor panels 10 is decreased such that any bending and/or curling of the unsupported marginal end portions of the floor panels 10 is reduced.
This use of the joining members 12 reduces the overall film, adhesive and liner usage considerably over the known art. In addition, the configuration of the floor panels 10 and joining members 12 allows for easier assembly of the floor in the field and on the job site. In one exemplary embodiment, the floor panel is a smooth back vinyl, thereby allowing reducing the amount of adhesive required to complete the floor/assembly and the locking of the planks to each other. The positioning of the joining members 12 in recesses 11 has the potential to eliminate any imprint transfer to the front face of the floor panel 10, as recesses 11 around the perimeter of the floor panel 10 that allow the backing strips or joining members 12 to be attached flush with the back of the floor panel without creating a ledge.
Thus, in exemplary embodiments, the joining members and adhesive required to create the shiplap is reduced by approximately 75% over the prior art, and the release member or liner to be disposed of would be reduced by approximately 50% to 75% when compared to the prior art. In addition, the use of the narrow strips of backing is more easily assembled and much simpler to automate. As the bottom surface of the floor tile and the bottom surface of the joining members are flush when assembled, the use of the joining members does not create any imprints on the top surface of the floor panel during shipping, even with double pallet stacking, thereby allowing for more packaging options.
While the written description has referred to a preferred embodiment, it will be understood by those skilled in the art that various changes and modifications may be made and equivalents may be substituted for elements thereof without departing from the patentable scope as defined by the claims. Therefore, it is intended that the patentable scope not be limited to the particular embodiments disclosed as the best mode contemplated, but rather other embodiments are intended to be within the scope of the claims if they have structural elements that do not differ from the literal language of the claims, or if they include equivalent structural elements with insubstantial differences from the literal language of the claims.
The present application is a continuation of U.S. Nonprovisional patent application Ser. No. 13/214,318, filed Aug. 22, 2011, to be issued as U.S. Pat. No. 8,950,147, the entirety of which is hereby incorporated by reference.
Number | Date | Country | |
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Parent | 13214318 | Aug 2011 | US |
Child | 14615944 | US |