JP5378655B2 - A wooden decorative floor material and a method for reforming a wooden decorative floor. - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide flooring easily installable, enabling the reduction of use materials, and capable of installable with saved labor and responding to the request of labor saving and resources saving during remodeling and a method of remodeling a floor. <P>SOLUTION: In this woody decorative flooring, a mounting material 4 is stacked and joined to the upper surface of a woody base plate 2 such as a plywood through a re-peelable adhesive agent allowing the re-peeling of a member to be adhered, particularly, a hot-melt adhesive agent layer 3. The mounting material 4 includes a compound sheet having a soft synthetic resin high specific gravity sheet 41, a middle quality fiber plate 42 with a thickness of 2.0 mm or thinner stacked on the sheet, and a decorative layer 43 stacked on the fiber plate. <P>COPYRIGHT: (C)2009,JPO&amp;INPIT

Description

  The present invention relates to a wooden decorative flooring for flooring of a building such as a house, and a method of renovating flooring constructed using the flooring.

  In recent years, with increasing demand for environmental conservation on a global scale, natural wood resources used as building materials are also strongly required to save resources.

  Under such a demand, re-use by renovation is recommended for buildings as well, and flooring, that is, floors using wood-based materials for floor finishing materials, requires renewal work by replacing floor materials. There is an increasing number of things that can be done in the near future.

  Conventionally, wooden floors in detached houses, etc. have been constructed by placing a base plywood called a control panel on the joists and forming a wooden floor base. It is constructed by sticking. This wooden decorative flooring is generally made by laminating and adhering decorative materials made of name wood decorative veneer, printed decorative sheet, synthetic resin sheet, resin impregnated paper, etc. on a substrate made of plywood, etc. What laminated | stacked buffer material layers, such as a foaming synthetic resin sheet, is used for the lower surface side. Such a flooring is provided with a male and female fruit (similar) processing for joining the adjacent flooring to the periphery, and while fitting these male and female ridges, It is fixed on the floor using nails or glue and nails.

  For this reason, when renovating a floor that has been damaged or deteriorated in appearance over time, it has been necessary to remove the floor material itself from the floor base surface and then apply a new floor material to the floor base surface.

  Such flooring replacement work is, first of all, in addition to the fact that it is somewhat troublesome to peel off and remove the existing existing flooring material that has been firmly bonded and fixed to the floor basement surface with glue or nails. Therefore, it is necessary to clean and clean the floor surface after removing the existing floor material, and also to repair the damaged floor surface. There was a problem that it took time, and as a result, the construction cost was considerably high.

In response to such problems, various proposals such as those shown in the following Patent Documents 1 to 4 have recently been made as technical means for facilitating the replacement work for renovating the flooring.
Japanese Patent Application Laid-Open No. 9-24212 JP 2002-21295 A JP 2005-155189 A JP 2006-348724 A

  In the above-mentioned Patent Document 1, it is assumed that a delamination material such as cardboard or a thin non-woven fabric is laminated and integrated on the back surface of a wooden substrate (wood board) of the floor material. The floor material portion can be easily peeled from the floor base surface by delamination.

  In Patent Documents 2 and 3, the floor material is bonded and fixed to a floor base using a heat-sensitive hot melt adhesive. The adhesive is heated and melted to re-peel and remove the flooring.

  These prior arts as disclosed in Patent Documents 1 to 3 are advantageous in that any existing flooring can be peeled and removed relatively easily and without significantly damaging the floor surface. However, in all cases, the existing old flooring material including the wooden substrate portion is removed as a whole, and all of this is used as waste material. For this reason, the volume of waste materials is considerably large in volume, and in addition to the disadvantage of increasing the processing costs when disposed of by incineration, etc., it is still possible to recycle and the largest volume among flooring materials. As a result, even the wood substrate portion that occupies the area is discarded, so that the above-mentioned demand for resource conservation of wood resources is not always satisfactory.

  On the other hand, Patent Document 4 relates to a flooring material for floor heating. On the other hand, a lower layer thin plate is provided on a plate-like substrate on which a heat medium circulation pipe is constructed, while a lower surface of a laminated surface covering material corresponding to the flooring material. In addition, an upper layer thin plate is provided, the two thin plates are made to be detachable from each other, and a surface layer material is laminated on the substrate via both the thin plates. Therefore, when renewing the cover material, it is possible to peel and remove only the surface material part while leaving the base material incorporating the pipes by peeling the gap between the two thin plates, and the base material can be reused. It is supposed to be. However, the cover material itself corresponds to a flooring material in correspondence with a general wooden floor, and as a result, it only teaches that the flooring material itself is peeled and removed from the ground surface during renovation. It does not suggest a technology for responding to the above-mentioned demand for resource saving. In addition, even when the above-mentioned base material is evaluated as if it is equivalent to a flooring substrate, the technology disclosed in Patent Document 4 is based on the floor construction site in advance after laying the base material in advance. Because it is a work to paste the cover material with two thin plates on it, it takes a little work on site construction, and the base material and the cover material are laminated and combined on site However, there is a problem that the stability of the quality remains, and the structure is complicated and expensive.

  Under the background of the prior art as described above, the present invention can easily perform a replacement work for the renovation of a flooring, and even partially when necessary, and reduces the waste material processing burden. An object of the present invention is to provide a wooden decorative flooring material that can greatly contribute to resource saving and can easily perform initial floor construction, and a construction method for renovating a wooden floor using the same.

  The present invention first presents the configurations described in the following [1] to [10] for a wooden decorative flooring material.

[1] A decorative floor material in which a thin sheet-like surface covering material having a decorative layer on a surface of a wooden substrate is laminated and integrated,
The cover material is bonded onto the wooden substrate via a releasable adhesive layer that enables re-peeling, and the cover material can be peeled off from the wooden substrate after construction. This is a wooden decorative floor material.

  [2] The wooden decorative flooring according to [1], wherein the removable adhesive layer is made of a hot-melt adhesive or a hot-melt pressure-sensitive adhesive.

  [3] The wooden decorative flooring according to [1] or [2] above, wherein the covering material has a thickness of 0.5 to 3 mm.

[4] The covering material includes a high specific gravity sheet made of a soft synthetic resin having a specific gravity of 1.0 to 3.0, and a wood fiber board having a thickness of 2.0 mm or less and a specific gravity of 0.35 or more laminated thereon. The wooden decorative flooring material according to any one of [1] to [3] above, further comprising a surface decorative layer laminated thereon.
[5] The wood covering flooring according to the above [4], wherein the covering material is further laminated with a wood fiber board having a thickness of 2.0 mm or less and a specific gravity of 0.35 or more on the lower surface of the high specific gravity sheet.

  [6] The wooden decorative flooring according to [4] or [5], wherein the wood fiber board of at least the upper surface side of the high specific gravity sheet in the cover material has a specific gravity of 0.7 or more.

  [7] The aforementioned [1] to [6], wherein the wood substrate is composed of one or more laminated plates selected from the group consisting of plywood, laminated board, medium fiber board, oriented strand board, and particle board. The wooden decorative flooring material according to any one of the above.

  [8] The wooden decorative flooring according to any one of [1] to [7] above, wherein a buffer material layer is laminated and integrated on the lower surface of the wooden substrate.

  [9] The above [1] to [8], wherein one or more decorative grooves extending straight in at least one of the longitudinal direction and the width direction of the flooring material are provided on the upper surface of the covering material. The wooden decorative flooring material according to any one of the above.

  [10] The wooden decorative flooring according to [9], wherein the depth of the decorative groove is set to be less than the thickness of the covering material and does not reach the wooden substrate.

  Next, this invention presents the construction method as described in the following [11]-[13] regarding the renovation construction method of the existing wooden decorative floor.

[11] A method for reforming a wooden decorative floor constructed with the decorative flooring material according to any one of [1] to [10],
A predetermined one or a plurality of floor covering materials are separated at a portion of the releasable adhesive layer and peeled off from the wooden substrate, and a new facing material having a corresponding shape is attached to the removed region. A method for renovating a wooden decorative floor characterized by the above.

  [12] After cutting the surface covering material with a cutter knife in such a manner as to enclose the surface replacement required region in which damage or damage in the surface of the surface covering material has occurred, the surface covering material in the surface replacement required region is partially The method for renovating a wooden decorative floor according to the preceding item [11], wherein peeling and removing are performed and a new cover material is pasted.

[13] A method for reforming a wooden decorative floor constructed with the decorative flooring material according to [9] or [10] above,
In a mode that surrounds the required replacement area where damage or damage has occurred in the surface of the cover material, and the decorative groove of the cover material is used as a reference line when making a cut, a cut is made at the portion of the decorative groove The method for reforming a wooden decorative floor according to the previous item [11], in which the surface covering material in the region requiring replacement is partially peeled and removed, and a new surface covering material is pasted.

  The flooring as described in the above items [1] to [10] according to the present invention is a monolithic floor having a stable quality, in which a substrate portion and a surface covering material portion thereon are previously laminated and integrated at a factory. Therefore, at the time of new construction, it is laid out on the floor foundation surface and glued, nailed, or used in combination with glue and nails, and double-sided adhesive tape is used as well as conventional wooden decorative flooring. By fixing the substrate portion to the floor base using the fixing means, the construction can be performed efficiently without increasing the number of special man-hours.

  In addition, the flooring according to the present invention is such that the substrate and the surface covering material thereon are joined and integrated through a specific adhesive layer that can be re-peeled. If the decorative layer becomes dirty or the flooring material is damaged and the floor needs to be replaced, only the surface material part is peeled off from the releasable adhesive layer while leaving the essential substrate. Then, by replacing this with a new cover material and pasting it on the substrate with an adhesive, the floor can be entirely or partially reformed. Therefore, first of all, it is possible to achieve the saving work of the replacement. That is, since it is not necessary to remove the substrate that is firmly fixed to the floor base surface as in the prior art, the replacement work can be performed relatively easily and efficiently. Second, the amount of waste material generated by renovation can be greatly reduced. That is, since the wooden substrate is reused as it is, only the surface material portion becomes the waste material, and the disposal cost can be reduced by reducing the amount of the waste material. Third, the material cost required for renovation can be greatly reduced. In other words, since the board part that occupies the largest part of the flooring material is reused after the floor is replaced, not only can this resource be used effectively to save resources, but also for floor replacement. Since the required new material can be limited only to the cover material, floor reform costs can be further reduced than before.

  The selection of the adhesive used for the above-described removable adhesive layer is an important factor in determining the ease of the floor remodeling operation. Preferably, the use of a thermoplastic hot melt adhesive or hot melt pressure-sensitive adhesive as described in the above item [2] is recommended. When using these hot-melt adhesives or pressure-sensitive adhesives, when replacing the floor, an iron (heating board) is applied to the floor surface and heated from the surface side, or high-frequency heating is performed using a high-frequency induction heating device. Thereby, the re-peeling operation | work of a surface material can be performed very easily by heat-melting an adhesive bond layer.

  Moreover, you may use a non-aging-type removable adhesive for a removable adhesive layer. In this case, although the tack force is slightly weak, it is possible to peel and remove the cover material from the substrate surface by turning it up with a strong force from one end side or one side edge without performing the heating operation as described above. This is advantageous in that

  Therefore, in any case, the floor base surface is hardly damaged, and a new cover material can be pasted without the need for repairing the base surface.

  Moreover, such floor replacement can be easily applied not only to the entire floor surface, but also to partial replacement, particularly for only severely damaged portions of the floor surface. .

  In addition, by using a specific laminated structure as described in the above [4] as a cover material, it can be handled as a single sheet-like material as a whole as a whole, It is easy to perform both the re-peeling and update pasting operations as described above. Moreover, the wood fiber board and the high specific gravity sheet have no directionality such as the fiber direction, and the wood fiber board is hard, but the thickness is as thin as 2.0 mm or less. It can be cut, and cutting on site can be easily performed with high accuracy.

  Furthermore, since it can be cut by a cutter knife, no wood powder such as saw chips is generated, so that the surrounding environment can be maintained well without polluting the surrounding area.

  In addition, a hard wood fiber board having a specific gravity of 0.35 or more, that is, a medium fiber board is used as the front side wood fiber board, and a high specific gravity sheet having a sufficient thickness is used as the high specific gravity layer on the back side. Therefore, it is possible to improve the drop scratch resistance of the floor material surface, and to effectively prevent the occurrence of dent scratches due to dropping of articles and the like. In particular, when a wood fiber board having a specific gravity of 0.7 or more is used as the wood fiber board on the surface side, the scratch resistance can be further improved.

  Further, in the flooring of the present invention, the high specific gravity sheet on the back side has high specific gravity and has flexibility, so that the familiarity with the wooden substrate surface is good and can be laminated and integrated with the wooden substrate in a stable state. .

  Furthermore, when the cover material has a sandwich structure in which hard wood fiber boards are laminated on the upper and lower surfaces of the high specific gravity sheet as described in the above item [5], the cover material is substantially symmetrical in the vertical direction. It becomes a structure, a balance in configuration is achieved, and a high-quality flat cover material without warpage can be produced. Further, even after the construction, it is possible to prevent the occurrence of stretching deformation such as warping due to moisture absorption / release.

  In addition, since the occurrence of warpage can be prevented, even if the adhesion strength of the cover material to the substrate is low, the warp does not warp, and it is possible to prevent the edge of the cover material from rising or forming a gap on the floor surface. it can. Therefore, the stable quality of the flooring material can be maintained even when it is bonded and fixed on the substrate using a removable adhesive having low adhesive strength.

  In addition, by using the substrate as described in the above item [7], a flooring that is inferior in workability, durability, and strength can be provided.

  Further, as described in the above item [8], when the buffer material layer is laminated on the lower surface of the wooden substrate, the soundproofing and cushioning properties are excellent, or depending on the materials used, the moistureproofing and soundproofing properties may be achieved. Can also be excellent.

  Furthermore, as described in the above item [9], it is possible to improve cosmetics by providing one or more decorative grooves such as V-shaped grooves on the upper surface of the covering material. In the partial replacement of the cover material, by using the decorative groove as a reference line and making a cut in the reference line, only the required replacement part of the cover material can be accurately and partially removed. The workability of replacement can be improved.

  Further, as described in the above item [10], the depth of the decorative groove is set to be less than the thickness of the covering material, and the groove bottom does not reach the wooden substrate, thereby causing harmful effects from the wooden substrate. In addition to suppressing the emission of volatile components, the wood substrate is not exposed on the side or bottom of the groove, so coloring the high specific gravity sheet eliminates the need for groove coloring after grooving. It is advantageous.

  On the other hand, the method for reforming a decorative floor as described in the above [11] to [13] is a construction method that can be carried out by using the decorative floor material having the above configuration, and is equivalent to the effect based on the configuration of the floor material. The effects of saving construction, saving resources, and reducing waste materials can be realized.

  Next, preferred embodiments of the present invention will be described with reference to the drawings.

  Referring to FIGS. 1 and 2, the wooden decorative flooring (1) according to the present invention has a thickness of 5 to 18 mm, a width of 75 to 303 mm, according to the dimensions of a general flooring that takes into account the workability. It is formed to a length of 900 to 1818 mm.

  As shown in FIG. 2, the flooring material (1) is laminated and integrated with a wooden substrate (2) via a peculiar removable adhesive layer (3) on the top surface (4). It is made of a laminated plate material having the basic components as described above.

  The wooden board (2) is a single board such as a plywood board, a laminated board, a wooden board, a medium fiber board (MDF), an oriented strand board (OSB), a particle board, etc., in the same manner as a conventional general wood floor board. A plate or a laminated plate obtained by joining and integrating a plurality of types of plate materials and having a thickness of about 4 to 12 mm is used.

  The adhesive layer (3) for attaching the cover material (4) to the upper surface of the wooden substrate (2) is limited to a removable material in the present invention. Here, the removable adhesive is used in the meaning of an adhesive that allows the surface covering material (4), which is an adherend, to be peeled again from the surface of the substrate (2).

  The type of the specific adhesive is not particularly limited, but it is recommended to use a heat-sensitive hot-melt type adhesive or hot-melt type pressure-sensitive adhesive. In addition, a re-peelable pressure-sensitive adhesive as a non-time-curable pressure-sensitive adhesive can also be used.

  When using a hot-melt adhesive or the same adhesive, always secure a strong adhesive force, and at the time of remodeling, apply a hot plate such as a household iron to the upper surface of the cover material (4) and heat it. Thus, it is advantageous in that the releasable adhesive layer (3) can be softened and melted to easily remove the surface covering material (4) again. In order to ensure removability by heating with such a simple iron, it is preferable to use an adhesive that can be melted at a temperature of 110 ° C. or lower, preferably 100 ° C. or lower, It is more preferable to use a material that can be melted at a relatively low heat temperature of 90 ° C. or less. Specific examples of hot melt adhesives that can meet such demands include ethylene vinyl acetate and polyolefin adhesives, and specific examples of hot melt adhesives include rubber-based adhesives. Acrylic and silicone adhesives are common.

  The surface covering material (4) itself is made of a flexible laminated sheet having a thickness of about 0.5 to 3.0 mm. Specifically, as shown in the enlarged portion of FIG. High specific gravity sheet (41), soft wood fiber board (42) laminated thereon via an adhesive layer (44), and a surface laminated further thereon via an adhesive layer (45) It is a composite sheet consisting of a decorative layer (43).

  The thickness of the outer covering material (4) is not necessarily limited to the above range of 0.5 to 3 mm, but it is composed of a thin sheet of 3 mm or less, and is heated by applying an iron to the upper surface. In addition, the heat is easily transferred to the releasable adhesive layer (3), and the cover material (4) is turned up from one end using its flexibility while the iron is slidably moved on the plate surface. It becomes possible to peel easily.

The wood fiber board (42) must have a specific gravity (density) of 0.35 (g / cm ² ) or more, that is, a specific gravity of medium fiber board or more, preferably 0. 0.7 (g / cm ² ) or more, more preferably 0.8 (g / cm ² ) or more. That is, if this specific gravity is too small, sufficient hardness cannot be ensured, resulting in a decrease in fall scratch resistance, and there is a risk that dents will be created when an article is dropped on the floor surface. is there.

  Furthermore, as the wood fiber board (42), it is necessary to use one having a thickness of 2.0 mm or less, preferably 1.5 mm or less, more preferably 1.0 mm or less, and still more preferably 0.5 mm or less. Use a good one. In other words, if it is too thick, sufficient flexibility as the whole flooring cannot be obtained, and when the wood fiber board contracts due to moisture release and stress in the valley warp direction is generated, elasticity in the direction to return the valley warp The repulsive force increases, the valley warp cannot be corrected, the end of the cover material (4) may be lifted, or a gap may be formed between adjacent floor materials.

  In addition, the wood fiber board having a thickness of less than 0.25 mm is too thin to be difficult to manufacture, and may cause a drop in fall scratch resistance.

  In addition, since there are only about 2.5 mm thick wood fiber board products with a medium specific gravity or more on the market, when producing the flooring of the present invention using a commercially available wood fiber board product, The thickness of the thick fiberboard product may be divided into two or more to produce a wood fiberboard corresponding to the present invention.

  Further, as the high specific gravity sheet (41), for example, synthetic resin (polymer material) such as soft synthetic resin, synthetic rubber resin, synthetic resin rubber, etc., inorganic powder with high specific gravity such as calcium carbonate, barium sulfate, etc. A material obtained from a composition in which a filler (a filler) made of metal powder such as iron or lead is mixed can be suitably used.

  The synthetic resin as the main component of the high specific gravity sheet (41) may be a mixture of a plurality of materials, and may further contain a hard synthetic resin.

  Furthermore, as this synthetic resin, it is preferable to use a resin that does not contain chlorine that generates harmful gases when incineration after disposal is taken into consideration.

  Further, as this synthetic resin, it is preferable to use a resin that does not contain a plasticizer that is blended with a polyvinyl chloride resin, for example, a resin that contains a rubber component such as a synthetic rubber resin or a synthetic resin rubber. . That is, when a plasticizer is included, the plasticizer may gradually evaporate and contract and deform during long-term use as a flooring. Furthermore, the plasticizer dispersed throughout the high specific gravity sheet may move to the adhesive surface with the wood fiber board and cause delamination.

  As a specific composition for the high specific gravity sheet (41), a blend of a polyethylene resin, ethylene / propylene / rubber (rubber), and calcium carbonate can be cited as a preferred example.

Moreover, as a high specific gravity sheet | seat (41), it is necessary to use a specific gravity (density) of 1.0-3.0 (g / cm < ³ >), Preferably it is 1.3-3.0, More preferably The thing of 1.5-2.5 (g / cm < ³ >) is good to use. In other words, if this specific gravity is too small, the stability during laying may be reduced. On the other hand, if the specific gravity is too large, the flooring itself may be increased in weight, and the workability such as construction workability may be reduced.

  Moreover, as a high specific gravity sheet | seat (41), it is necessary to use the thing whose thickness is the range (1-10 times) of equivalent to 10 times with respect to the thickness of a wood fiber board (42), Preferably it is a minimum. A value of 2 times or more and an upper limit value of 7 times or less, more preferably a lower limit value of 3 times or more and an upper limit value of 6 times or less may be used. That is, when it is too thick, the influence by the thermal expansion of the high specific gravity sheet (41) becomes large, and there is a possibility that a gap may be generated in the floor material joint portion of the constructed floor surface. On the other hand, if it is too thin, the wood fiber board (42) has a greater behavior with temperature and humidity changes than the high specific gravity sheet (41). There is a possibility that the surface material (4) is pushed up or a gap is formed in the material joint.

  From another viewpoint, in the practice of the present invention, the specific gravity of the wood fiber board (42) is “df”, the thickness is “Tf”, and the specific gravity of the high specific gravity sheet (high specific gravity layer) is “dr”. When the thickness is “Tr”, a relationship of dr · Tr ≧ 6 × df · Tf, preferably a relationship of dr · Tr ≧ 10 × df · Tf is preferably established. In other words, the product of specific gravity and thickness (mass per unit area) in the high specific gravity sheet is 4 times, preferably 6 times, more preferably 10 times or more than the product of specific gravity and thickness of the wood fiber board. It is good to set to.

  That is, when these thickness relationships and mass relationships per unit area are less than the above specific value, the high specific gravity sheet (41) is easily affected by the expansion and contraction behavior of the wood fiber board (42), There is a possibility that the valley warp of the surface covering material (4) cannot be sufficiently suppressed.

  Moreover, in this invention, it is preferable to employ | adopt the structure by which a hardness (based on JISK6253 durometer hardness test type A) is 80 degrees or more as a high specific gravity sheet | seat (41).

  That is, as the high specific gravity sheet (41), it is preferable to use a sheet having a hardness according to durometer hardness test type A described in JIS K6253 “vulcanized rubber hardness test method” of 80 ° or more, more preferably the hardness. It is good to use a thing of 85 degrees-95 degrees.

  When the hardness is less than 80 °, when an article falls on the floor material surface, the load cannot be sufficiently received by the high specific gravity sheet, and there is a possibility that a dent is generated.

  In addition, when this hardness exceeds 95 °, the elongation due to heat increases, which may cause generation of a valley warp, which is not preferable.

  In this embodiment, as the decorative layer (43), a wood veneer made of natural wood or artificial cocoon, a pattern printing resin sheet, pattern printing paper, surface coating, or a combination thereof is used. be able to.

  The wood veneer used for the decorative layer (43) may be either a wet veneer or a dry veneer, but the dry veneer is desirable because the change in the amount of water in the laminated adhesive part to the wood fiber board is small. Further, the thickness of the decorative layer (43) is arbitrary, but about 0.2 to 0.6 mm is usually employed, and preferably about 0.2 to 0.4 mm.

  In the embodiment shown in FIG. 2, the wood fiber board (42) is laminated only on the upper surface side of the high specific gravity sheet (41). However, as shown in FIG. Similar wood fiber boards (42A) and (42B) may be laminated on the upper and lower surfaces to form a three-layer sandwich structure. In this case, the surface covering material (4) has a substantially symmetric structure in the vertical direction, and the structural balance is achieved, so that a high quality flat surface covering material (4) free from warpage can be created.

  In the above, the adhesive (44) (45) used for laminating and bonding each layer is an adhesive that does not contain a solvent such as a hot melt type (reactive hot melt type), an epoxy resin type, a urethane resin type, or a solvent such as water. It is preferable to use an agent.

  That is, since melamine type, phenol type, aqueous vinyl urethane type and the like that are usually used as an adhesive contain a solvent such as moisture, the solvent penetrates into the wood fiber board, and the solvent remains even after the adhesive is cured, This is because there is a risk of causing deformation such as harmful warping.

  The laminate bonding step of the wood fiber board (42) and the decorative layer (43) may be performed under either hot pressure or cold pressure. However, under high pressure, the high specific gravity sheet expands due to heat. In order to prevent this, it is better to use cold pressure.

  The surface material (4) is manufactured in advance as a laminated sheet, and then laminated on the wood substrate (2) via the releasable adhesive layer (3), and laminated and bonded by hot pressing or cold pressing. The floor material (1) is integrated and finished.

  Here, the wooden board (2) has a male ridge part (5) and a female ridge part (6) for joining the adjacent floor materials (1) (1) through the four sides of the four circumferences. A lower protrusion (8) is formed, or an upper protrusion (7) for phased joint is formed. In particular, when a plywood is used for the substrate (2), a substrate having a plurality of grooves (9) formed on the lower surface side is preferably used to prevent warpage as shown in FIG.

  Further, the floor material (1) has a V-shaped chamfered portion (10) for a decorative groove on the periphery within the range of the thickness region of the cover material (4), and further, the floor material (1) has a length of the floor material on the upper surface. One or more straight V-shaped decorative grooves (12) are formed in parallel with the vertical direction and / or the width direction as shown in FIG.

  It is preferable that the depth of the decorative groove (12) is set to be less than the thickness of the surface covering material (4) as shown in FIG. 2 so that the groove bottom does not reach the wooden substrate (2). By setting the depth to such a depth, the wooden substrate (2) is not exposed to the bottom of the groove, and the entire surface thereof is covered in a hermetically sealed manner with the cover material (4). 2) It is possible to prevent volatile harmful components that may be contained in the exterior from being diffused to the outside, and by using a pre-colored high specific gravity sheet (42), groove cutting of the decorative groove (12) There is no need to color the groove later, which is advantageous in that the manufacturing process of the flooring can be simplified.

  FIG. 3 shows another preferred embodiment. In this embodiment, the buffer material layer (11) is provided by being laminated and integrated on the lower surface of the wooden substrate (2). This cushioning layer (11) contributes to the improvement of the feeling of stepping down by imparting cushioning properties to the flooring material, and contributes to the improvement of soundproofing, heat insulation, etc., such as polyurethane, polyethylene, polypropylene, polystyrene, etc. A foam sheet, a polyester nonwoven fabric, a rubber sheet, or the like is used. In addition, a moisture-proof sheet such as moisture-proof paper may be provided in place of the buffer material layer (11).

  The above flooring (1) is laid as shown in FIG. 4 using an appropriate fixing means such as a nail or an adhesive on the floor base surface (G) in the same manner as a conventional ordinary flooring. And constitutes a wooden decorative floor (F).

  At the time of renovation, the hot melt type releasable adhesive layer (3) is applied by placing a heating board such as a household iron on the upper surface of the flooring (1) or contacting a high frequency induction heating device. While being heated and melted, the surface material (4) is turned up from one end and peeled off. Instead, a new cover material (4) having a corresponding dimension prepared separately is pasted on the wooden substrate (2) using an appropriate adhesive, double-sided adhesive tape, or the like, thereby completing the reform.

  On the other hand, in the case where the damaged part or the fouled part of the floor surface is partial, the flooring material (1) having the damaged part is similar to the above in the unit of the flooring material (4) for each flooring material. Can be replaced. Alternatively, in the case where the above-mentioned replacement required area is only a limited part of one floor material (1), the surface covering material (4) is surrounded by the replacement required area. After making a cut using a cutter knife or the like, it is also possible to peel off the cover material (4) of only the portion surrounded by the cut and replace it with a new one. In this case, as shown in FIG. 1, when the floor material (1) is provided with a V-shaped decorative groove (12) on its upper surface, the decorative groove (12) is used as a reference for making a cut. By using a line ruler, a cut is made in the groove bottom portion of the decorative groove (12) and the partial replacement as described above is performed, so that the partial replacement operation for only the required portion can be performed more accurately. And it can be done easily, and even a non-skilled person can finish the renovation beautifully.

Next, a specific configuration example of the flooring of the present invention will be described as an example as follows.
Surface material: 1.6mm thickness
Cosmetic material (43): Thickness 0.1mm
Olefin resin sheet
Wood fiber board (42): 0.5mm thick
Specific gravity 0.8
Medium density fiberboard (MDF)
High specific gravity sheet: Thickness 1.0mm
Specific gravity 1.5
Ethylene / propylene rubber

[Example 1]
Use a particle board with a thickness of 9.0mm as a wooden substrate, and laminate and integrate the surface material of the above specifications on the upper surface via an acrylic hot melt adhesive, and stick moisture-proof paper on the lower surface And
Thickness: 10.6mm
Length: 1.818mm
Width: 303mm
Made flooring.

[Example 2]
A flooring material having a thickness of 7.1 mm was manufactured in the same manner as in Example 1 except that MDF having a thickness of 5.5 mm was used as the wooden substrate .

[Example 3]
Except for using a Falcarta plywood having a thickness of 8.0 mm as a wooden substrate and laminating and bonding a cushioning material made of a polyethylene foam having a thickness of 2.5 mm to the lower surface, A flooring with a length of 12.1 mm was produced.

  About each flooring of the above-mentioned Examples 1-3, a household iron whose surface temperature is set to about 200 ° C. is pressed on the upper surface, and the iron is slowly moved with the heating time of 1-2 minutes as a guideline. When the material was turned up from one end, it was confirmed that it could be easily removed. And, when the wood substrate surface after the peeling and removal is observed, the surface state suitable for re-sticking a new cover material by applying the adhesive as it is, with only a slight adhesive residue seen Met.

It is a top view which shows one preferable embodiment of the essential decorative flooring which concerns on this invention. FIG. 2 is an enlarged cross-sectional view of an intermediate section taken along line II-II in FIG. 1. It is sectional drawing equivalent to FIG. 2 which shows other embodiment of this invention. It is a perspective view which shows a part of wooden decoration floor constructed with the flooring of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Flooring material 2 ... Wood substrate 3 ... Removable adhesive layer 4 ... Outer material
10 ... Chamfer
11 ... cushioning material
12 ... Makeup groove
41 ... High specific gravity sheet
42, 42A, 42B ... wood fiberboard
43 ... Makeup layer

Claims (12)

A decorative floor material in which a thin sheet-like surface covering material having a decorative layer on a surface of a wooden substrate is laminated and integrated,
The cover material is bonded onto the wooden substrate via a releasable adhesive layer that enables re-peeling, and the cover material can be peeled off from the wooden substrate after construction. ,
The covering material is a high specific gravity sheet made of a soft synthetic resin having a specific gravity of 1.0 to 3.0, a wood fiber board having a thickness of 2.0 mm or less and a specific gravity of 0.35 or more laminated thereon, and further A wooden decorative floor material comprising a surface decorative layer laminated thereon. The wood covering flooring according to claim 1 , wherein the covering material is formed by further laminating a wood fiber board having a thickness of 2.0 mm or less and a specific gravity of 0.35 or more on the lower surface of the high specific gravity sheet. 3. The wooden decorative flooring according to claim 1 , wherein a specific gravity of the wood fiber board of at least the upper surface side of the high specific gravity sheet in the covering material is 0.7 or more. Wherein the upper surface of the face material, according to any one of claims 1 to 3, the longitudinal direction and the width direction of the first to the decorative grooves of plural rows were straight extended to at least any one direction of flooring is provided Wooden decorative flooring. The wooden decorative flooring according to claim 4 , wherein the depth of the decorative groove is set to be less than the thickness of the covering material and does not reach the wooden substrate. The wooden decorative flooring according to any one of claims 1 to 5 , wherein the removable adhesive layer is made of a hot melt adhesive or a hot melt adhesive. The wood covering flooring according to any one of claims 1 to 6 , wherein the covering material has a thickness of 0.5 to 3 mm. The wood substrate, plywood, assembly plate, medium density fiberboard, oriented strand board, and consisting of one or more laminates selected from the group consisting of particle board to any one of claims 1-7 The wooden flooring described. The wooden decorative flooring according to any one of claims 1 to 8 , wherein a buffer material layer is laminated and integrated on the lower surface of the wooden substrate. A method for remodeling a wooden decorative floor constructed with the decorative flooring material according to any one of claims 1 to 9 ,
A predetermined one or a plurality of floor covering materials are separated at a portion of the releasable adhesive layer and peeled off from the wooden substrate, and a new facing material having a corresponding shape is attached to the removed region. A method for renovating a wooden decorative floor characterized by the above. After the cut surface is cut with a cutter knife in a manner that surrounds the required replacement area in the surface of the cover material that has been damaged or damaged, the cover material in the required replacement area is partially peeled and removed. The method for renovating a wooden decorative floor according to claim 10 , wherein a new cover material is pasted. One or a plurality of decorative grooves extending straight in at least one of the longitudinal direction and the width direction of the flooring are provided on the upper surface of the covering material,
In a mode that surrounds the required replacement area where damage or damage has occurred in the surface of the cover material, and the decorative groove of the cover material is used as a reference line when making a cut, a cut is made at the portion of the decorative groove The method for renovating a wooden decorative floor according to claim 10 , wherein, after putting in, a part of the covering material in the required replacement area is partially peeled and removed, and a new covering material is attached.

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