JPH0687543U - Composite decorative flooring - Google Patents

Abstract

(57) [Summary] [Structure] A composite material in which a surface base material 4 made of a reconstituted material is attached to the upper surface of a base plate 3 to which end materials 2 are attached along both side edges of a core material 1. A flooring composed of
A core board 1 made of particle board (PB) is used, and a surface base material 4 made of a reconstructed material having an expansion coefficient similar to that of PB is used.
The backing material 8 having a tensile property is attached to the lower surface of the. [Effect] Since the degree of expansion and contraction of the core material 1 and the surface base material 4 can be obtained and a good balance of expansion and contraction of both can be maintained, the occurrence of warpage, and particularly harmful valley warpage, can be prevented. You can Moreover, the backing material 8 suppresses the elongation of the floor material lower layer portion, and from this point also, it is possible to prevent the generation of harmful valley warpage. Further, by using the reconstructed material as the core material 1 and the surface base material, the use of the high-quality lauan wood or the like is limited to only the mill ends 2, so that the depletion of natural wood resources can be dealt with.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 This invention relates to a composite decorative flooring material used for floor finishing.

[0002]

[Prior art]

 Due to the depletion of natural timber resources and the social demand for nature conservation in recent years, the consumption of timber, especially high-grade timber such as high-grade lauan wood, tends to be restricted, and the construction timber sector Also in Japan, there is a strong demand for the provision of flooring materials by using Lauan substitutes, so-called Lauan saving.

As a means for reducing lauan, for example, Japanese Utility Model Laid-Open No. Sho 63-76142 discloses a floor material in which spacer members are attached to the lower portions of both side edges of a surface material and a heterogeneous material is arranged between the spacer members. Has been done.

This floor material is made of a light material such as Styrofoam as a heterogeneous material, or a Lauan substitute material such as a honeycomb core, a particle board, a fiber board, or the like for the purpose of saving the labor.

[0005]

[Problems to be solved by the device]

 However, in the above floor material, when a lightweight material such as expanded polystyrene is used as the foreign material, it is necessary to use a thick and high-strength material as the plywood for the surface material in order to prevent the strength from being lowered. In other words, a large amount of high-quality lauan plywood, etc. must be used as the surface material, which does not meet the demand for lauan saving and may increase the cost.

Further, in the case of using a relatively high-strength particle board or the like as the foreign material, the plywood of the surface material can be thinly finished, and lauan can be saved. However, the average dimensional change rate (linear expansion / contraction rate) in the length and width directions for a change in water content of 1% when absorbing and releasing moisture is about 0.015% for plywood. The particle board is about 0.045%, and the linear expansion coefficient in the length direction and the width direction per 1% of the water absorption rate when immersed in water at 25 ° C. for 24 hours is 0.0025 to 0. The average is about 0.0033% at 0053%, whereas the average is about 0.010% to about 0.075% for party boards. In this way, the expansion rate indicated by the linear expansion or contraction rate or the linear expansion rate differs greatly between plywood and particle board, and the expansion and contraction degree differs greatly. In many cases, valley warpage that is harmful at times occurs, and it has not yet been put to practical use.

The present invention solves the above-mentioned problems of the prior art, can prevent the generation of harmful valley warpage, and also can deal with the depletion of natural wood resources by saving high-quality wood and further reducing the cost. The object is to provide a composite decorative flooring material that can also be expected.

[0008]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention provides a surface base material on both side edges of a plate-shaped core material in the width direction and on an upper surface of a base plate to which end materials are attached along at least one end in the length direction. 2 is formed of a composite material in which a surface decorative material is provided on the surface base material of the composite material, and adjacent two of the sides of the composite material on which the end materials are arranged are adjacent to each other. A composite decorative flooring material, in which a connecting male part is formed on one side and a female part corresponding to the male part is formed on the remaining two sides, wherein the core material is composed of particle board. The end material is made of a material having higher mechanical strength than the core material and capable of holding nails, and the surface base material has a coefficient of expansion similar to that of particle board, and a medium fiberboard or particle board. , Hard board, wafer board, orientated strand board Made of one or more materials selected from reconfigurable materials such as cords, and a backing material having tensile strength is attached to at least the region where the core material is arranged on the lower surface of the base plate. What is done is the gist.

In this invention, it is preferable that the backing material is made of a moisture-proof material and is attached to the entire lower surface side of the base plate.

[0010]

[Action]

 In the composite decorative flooring material of this invention, a particle board is used as the core material of the base plate, and a reconstructed material whose expansion coefficient is close to that of the particle board is used as the surface base material adhered onto the base plate. Since a material made of a material is used, the degree of expansion and contraction of the core material and the surface base material can be matched, and a good balance of expansion and contraction of both can be maintained. Moreover, since a backing material having a tensile property is attached to the lower surface of the base plate, the expansion of the lower layer portion of the floor material is suppressed.

Further, by using a reconstructed material which is a substitute material for Lauan as the core material and the surface base material, the use of high-grade wood such as high-grade Lauan wood is limited to only the scraps. .

[0012] Since the male part is formed of high-strength end material that can be nailed, the nail that has been driven in is strongly held by the end material during floor material construction, and the nail is used for flooring. The material can be reliably fixed.

Further, in the present invention, when the backing material made of the moisture-proof material is attached to the entire lower surface of the base plate, it is possible to prevent moisture absorption from the lower surface side of the floor material into the floor material.

[0014]

【Example】

 1 is a partially cutaway perspective view showing a composite decorative flooring material according to an embodiment of the present invention, FIG. 2 is a sectional view taken along line II-II of FIG. 1, and FIG. 3 is a sectional view taken along line III-III of FIG. . It should be noted that, in these drawings and the following drawings, the dimension in the thickness direction is shown larger than the actual one for the purpose of facilitating understanding of the invention.

As shown in FIG. 1 to FIG. 3, the flooring material includes both end portions in the width direction of the plate-shaped core material (1) and end materials (2) and (2) along one end in the length direction. The surface base material (4) and the surface decorative material (5) are attached to the upper surface of the base plate (3) to which (2) is attached, and the backing material (8) is attached to the entire lower surface. And a joining male tongue (6) is formed on two adjacent sides of the side of the end material (2) where the end material (2) is arranged. The female tongue portion (7) corresponding to the male tongue portion (6) is formed on the other two sides except the two sides.

In this floor material, the core material (1) is made of particle board. Further, as the core material (1), a material having a thickness of 5 mm or more can be preferably used, and it is preferable to use a material having a thickness of 6 to 12 mm. If the thickness is less than 5 mm, it becomes difficult to effectively prevent the generation of harmful valley warp described later and to secure necessary strength.

The end material (2) needs to be made of a material having higher mechanical strength than the core material (1) and capable of holding a nail. Specifically, wood boards such as plywood, laminated wood, laminated veneer lumber (LVL) and peel wood, and resin materials such as synthetic wood and synthetic rubber can be preferably used. Naturally, the material is not limited.

Further, as the end material (2), a material having a thickness similar to that of the core material (1) can be preferably used.

The surface base material (4) has a linear expansion coefficient or linear expansion coefficient similar to that of particle board, that is, 0.5 to 1.7 times the linear expansion coefficient or linear expansion coefficient of particle board, A reconstitution material that preferably has a linear expansion or expansion coefficient of 0.6 to 1.4 times, and is formed by compression molding wood fibers or wood chips using an adhesive, a binder, or the like. Is used. Specifically, the linear expansion / contraction rate is 0.020 to 0.070% (% /%), preferably 0.030 to 0.060% (% /%), or the linear expansion coefficient is 0.010 to 0. 0.060% (% /%), preferably 0.010 to 0.040% (% /%), for example, 0.4 to 0.8 medium density fiberboard (MDF), particle bow. (PB), hard board (HB), wafer board (WB), oriented strand board (OSB), etc. can be used. Among them, PB, MDF and HB are preferably used from the viewpoint of surface smoothness. can do.

The surface base material (4) does not necessarily have to be made of one kind of material, and may be made of two or more kinds of materials.

In addition, a sheet material such as paper, non-woven fabric or cloth is attached to the front surface, the back surface or both surfaces of the front surface base material (4) as necessary, or a resin impregnation treatment or a resin coating treatment is performed. May be given.

As the surface decorative material (5), in addition to wood veneer, known materials such as patterned printing paper and patterned vinyl chloride can be used, but the decorative material is formed by a known coating treatment. You can also

The thickness of the surface material composed of the surface base material (4) and the surface decorative material (5) is preferably set to be thinner than that of the end material (2), specifically, 2 mm to 7 mm. The range of 3 mm to 5.5 mm is especially preferable.

As the backing material (8), a material having a tensile strength of 39.2 N (4 kgf) per width of 15 mm or more can be preferably used, and more preferably 58.8 (6 kgf) or more. It is better to use the one that becomes. Specifically, paper, non-woven cloth, cloth, wood veneer, resin-impregnated paper, vulcanized fiber paper, synthetic resin sheet or film, and combinations thereof can be used.

When manufacturing the composite decorative flooring material having this structure, for example, end materials (2), (2) and (2) are attached along a predetermined peripheral edge of the core material (1) and the base plate (3) is attached. The base material (4) and the surface decorative material (5) are adhered to the upper surface of the base plate (3), and the backing material (8) is adhered to the lower surface of the base plate (3). It is carried out by forming an attached composite material and subjecting the composite material to a tongue process to form a male tongue portion (6) and an female tongue portion (7). However, the floor material manufacturing method is not limited to this.

Construction using this flooring material is performed by attaching the flooring material to the flooring base formed of plywood, particle board, or the like with an adhesive and attaching the nail to the base end portion of the male portion (6). It is performed by driving it so that it penetrates through and fixing it to the floor base. For the second and subsequent constructions, fit the tongue portion of the floor material that has already been fixed to the floor material to the tongue portion of the floor material to be constructed next, and attach it to the floor material in the same manner as above. It will be fixed.

According to this floor material, the core material (1) of the base plate (3) is made of particle board, and the surface base material (4) adhered onto the base plate (3) is used. As a material made of a reconstructed material having an expansion coefficient similar to that of the particle board is used as the material, the degree of expansion and contraction of the core material (1) and the surface base material (4) can be matched, and the expansion and contraction of both materials can be obtained. A good balance is maintained. Therefore, it is possible to prevent the occurrence of warpage, and particularly the harmful valley warpage. Moreover, since a backing material having tensile strength is attached to the lower surface of the base plate (3), the expansion of the lower floor portion of the floor material is suppressed, and in this respect also, the occurrence of harmful valley warpage is prevented. be able to.

Further, since the male tongue portion (6) is formed on the end material (2) capable of nailing with high strength, the driven nail is strongly held by the end material (2) and nailed. The floor material can be reliably fixed by.

Furthermore, by using the reconstructed material of the Lauan substitute material as the core material (1) and the surface base material (4), it is possible to use the high quality wood such as the high quality Lauan wood as the end material (2). It is possible to deal with the depletion of natural timber resources by saving high-grade timber.

When the backing material (8) is attached to the entire back surface side of the base plate (3) as in this embodiment, a moisture-proof material such as a water impermeable material is used as the backing material (8). If it is used, even if dew condensation occurs on the floor base, it can prevent moisture absorption inside the floor material, and it will not cause adverse effects due to moisture absorption, such as valley warping, surface cosmetic material contamination, and delamination. Can be prevented.

Even if the backing material (8) itself is a hygroscopic material, if it is subjected to a moisture-proof treatment such as sticking a moisture-proof sheet or applying a moisture-proof coating to the material, Similar effects can be obtained.

By the way, in the above embodiment, the backing material (8) is adhered to the entire lower surface side of the base plate (3), but in the present invention, as shown in FIG. It is sufficient that the backing material (8) is provided on at least the region where the core material (1) is arranged on the lower surface of (3).

Further, in the above embodiment, the end material (2) is arranged on three sides of the four sides of the base plate (3), but the present invention is not limited to this, and the end material (2) is not limited to this. Alternatively, they may be arranged on all four sides of the base plate (3).

Further, in the present invention, a reinforcing material (9) is interposed at an appropriate place inside the floor material, for example, inside the core material (1) as shown in FIG. 5 (a) to enhance the strength of the floor material. Alternatively, as shown in FIG. 5B, a groove (10) for preventing warpage may be formed on the back surface side of the front surface base material (4).

[0035]

[Effect of device]

 As described above, according to the composite decorative flooring material of the present invention, the core material of the base plate is made of particle board, and the particle board and the expansion coefficient are used as the surface base material stuck on the base plate. Since a material composed of a reconstructed material that is close to is used, the degree of expansion and contraction of the core material and the surface base material is consistent, and a good balance of expansion and contraction of both is maintained. Therefore, it is possible to prevent warpage, particularly harmful valley warpage. Moreover, since the backing material having a tensile property is attached to the lower surface of the base plate, the expansion of the lower layer portion of the floor material is suppressed, and in this respect also, it is possible to prevent the occurrence of harmful valley warpage.

Further, by using the reconstructed material as the Lauan substitute material as the core material and the surface base material, the use of the high-grade wood such as the high-grade Lauan wood is limited to only the mill ends, so that It is possible to deal with the depletion of natural wood resources by reducing the quality wood. Further, the cost can be reduced by selecting the material of the surface base material.

Since the male part is formed of high-strength and nailable end material, the nail that has been driven in is strongly held by the end material during floor material construction, and the nail is used for flooring. The material can be reliably fixed.

Further, in the present invention, when a backing material made of a moisture-proof material is attached to the entire lower surface of the base plate, it is possible to prevent moisture absorption from the lower surface side of the floor material to the inside of the floor material, resulting in a valley warp and a surface. This has the advantage of preventing the adverse effects of moisture absorption, such as cosmetic material contamination and delamination.

[Submission date] June 17, 1993

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0008

[Correction method] Change

[Correction content]

[0008]

[Means for Solving the Problems]

To achieve the above object, this invention comprises an upper surface of the side edge portions and, respectively offcuts along either end even without less is adhered base plate in the length direction of the plate-shaped core material A composite material in which a surface base material is attached and a surface decorative material is provided on the surface base material, and the composite material is adjacent to a side portion where the end material is arranged. A composite decorative flooring material in which a mating male part is formed on two mating sides and a female mating part corresponding to the male part is formed on the remaining two sides, wherein the core material is composed of particle boards. The end material is made of a material having higher mechanical strength than the core material and capable of holding nails, and the surface base material has a coefficient of expansion similar to that of particle board and a medium fiberboard, Particle board, hard board, wafer board, oriented It is composed of one or more materials selected from reconfigurable materials such as a landing board, and a backing material having a tensile property is attached to at least a region on the lower surface of the base plate where the core material is arranged. The idea is to be dressed.

[Procedure 3]

[Document name to be amended] Statement

[Name of item to be corrected] 0015

[Correction method] Change

[Correction content]

[0015] As shown in FIGS. 1 to 3, the flooring, and the side edges that put the length of the plate-like core member (1), the end member along one end (2) (2 ) (2) is attached to the upper surface of the base plate (3), the surface base material (4) and the surface decorative material (5) are attached, and the backing material (8) is attached to the entire lower surface. And a mating ridge (6) is formed on the adjoining two sides of the sides of the composite material on which the end material (2) is arranged. The female tongue portion (7) corresponding to the male tongue portion (6) is formed on the other two sides except the two sides.

[Brief description of drawings]

FIG. 1 is a partially cutaway perspective view showing a composite decorative flooring material according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along line II-II in FIG.

FIG. 3 is a sectional view taken along line III-III in FIG.

FIG. 4 is a sectional view showing a modified example of the present invention.

FIG. 5 is a sectional view showing another modified example of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Core material 2 ... End material 3 ... Base plate 4 ... Surface base material 5 ... Surface decorative material 6 ... Male tongue part 7 ... Female tongue part 8 ... Lining material

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[Procedure amendment]

[Submission date] June 17, 1993

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] Claim 1

[Correction method] Change

[Correction content]

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Internal reference number FI Technical display area E04F 15/18 A 7805-2E

Claims (2)

[Scope of utility model registration request] 1. A surface base material is adhered to both side edges of a plate-shaped core material in the width direction and an upper surface of a base plate to which end materials are adhered along at least one end in the length direction. A composite material in which a surface decorative material is provided on the surface base material, and a joining male tongue portion is formed on two adjacent sides of the side portion of the composite material on which the end material is arranged. A composite decorative flooring material in which female ridges corresponding to the male ridges are formed on the remaining two sides, wherein the core material is made of particle board, and the end material is more mechanical than the core material. High strength, is composed of a material capable of holding nails, the surface base material, the expansion coefficient is similar to the particle board, and medium fiberboard, particle board, hard board, wafer board, such as oriented strand board Select from reconstituted materials And a backing material having tensile strength attached to at least a region of the lower surface of the base plate where the core material is arranged. Makeup flooring. 2. The composite decorative flooring material according to claim 1, wherein the backing material is made of a moisture-proof material and is adhered to the entire lower surface side of the base plate.