JPH10292606A - Flooring - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a swell of an adhesive applied to a floor base face, from abutting to a wood base material of flooring so as to prevent the generation of a squeak of a floor by forming a void of specified width on the lower face side of a tongue and groove joint part formed at the end face of the flooring. SOLUTION: Flooring A1, A2 are formed by sticking cushioning material 5 to the whole back face of wood base material 2 through an adhesive layer 6, forming tongue and groove jointing protrusions 10 and recessed grooves 20 at the end faces of the wood base material 2 and cutting out the lower parts of the protrusions 10 inside by L2. At the time of applying an adhesive (b) onto a floor base G and sliding the flooring A1 to fit the protrusion 10 of the flooring A1 into the recessed groove 20 of the flooring A2 for tongue and groove jointing, a swell of the unhardened adhesive (b) is generated between the flooring A1, A2, but since a void S is formed at the lower face of the tongue and groove joint part of the flooring A1, the adhesive (b) does not come in contact with the wood base material 2. Such a sense of incongruity that only the tongue and groove joint part feels hard is not therefore generated while preventing the squeak of a floor caused by the contact/separation between the wood base material 2 and the swollen part of the adhesive.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flooring material, and more particularly, to an improved flooring material in which a cushioning material is arranged on the back surface of a wooden base material to improve the soundproofing and vibration-proofing properties and to suppress the occurrence of floor noise. About.

[0002]

2. Description of the Related Art A plurality of ridges (males) and grooves (females) are formed around a wooden base material, and the ridges and grooves are laid on a floor substrate while being joined to each other. Thus, flooring materials for constructing so-called flooring are known. A cushioning material made of an elastic material is usually provided on the back surface of such a flooring material in order to improve soundproofing and vibrationproofing.

FIGS. 9 and 10 show an example of such a unit plate. In this example, a unit plate 1 having a ridge (male) 10 and a concave groove (female) 20 formed around the unit plate 1 has a stepped end. The wooden base material 2 is formed by performing four-step actual joining in the vertical direction while shifting the position so that the cushioning material 3 is adhered to the entire back surface of the wooden base material 2 via the adhesive layer 6. To form a floor material a. The side surfaces below the ridges 10 and the concave grooves 20 of each unit plate 1 are surfaces 11 and 21 which are slightly inclined inward, thereby forming a void 4 on the lower surface side of the actual joint. The space 4 is filled with a hot melt resin 5 at intervals. The hot-melt resin 5 ensures that the unit plates 1 are joined together, and also makes it easy for the entire flooring a to cope with unevenness of the substrate surface.

FIG. 11 shows another example of the flooring material a. In this example, the wooden base material 2 is formed as a single piece, and the cushioning material 3 is adhered to the back surface thereof through an adhesive layer 6. I have. In the case of the flooring material a in this form, the side surface below the real part (the ridges 10 and the concave grooves 20) is often a vertical surface. In any case, the surface of the wooden base material 2 is decorated by attaching an appropriate decorative surface plate or the like.

Plywood, particle board, MDF (medium fiber board), OSB (oriented strand board), or the like, or a composite material thereof is usually used as a material of the wooden base material 2. , Natural rubber,
Synthetic rubbers and their foams, synthetic resins such as polyolefin-based resins and polyurethane-based resins, and their foams, non-woven fabrics, and composites of the above materials are used.

When laying this kind of floor material having a cushioning material on the back surface on the floor substrate, as shown in FIG.
An adhesive such as an epoxy-based adhesive or a urethane-based adhesive is usually applied in an amount of about 500 to 800 g / m ^{2 on} the laying surface of the floor substrate. The floor material a1 partially broken so as to conform to the above condition is fixed to the corner. Next, another flooring material a2 to be actually joined is placed near the flooring material a1 as a direction in which the stepped end portions fit each other, and the flooring material a2 is inclined as shown by an arrow in FIG. Direction, or horizontally or vertically,
It is moved toward the floor material a1 while sliding on the uncured adhesive, and the stair-like ends are joined by real joining. Hereinafter, the same operation is repeated.

[0007]

The present inventor has laid a large number of floor materials having the above-mentioned cushioning material adhered to the back surface thereof on a floor substrate. In the process, an uncured adhesive was used. When the floor material a2 is laid while sliding on the application surface, FIG.
As shown in the figure, a part of the applied adhesive b
Gradually rises and moves at the end face on the front end side in the traveling direction, and at the time of the actual joining, it enters between the end faces of the floor material a1 and the floor material a2, and the adhesive flows from the gap d of the actual joining part. (Figure 7b). The hardened adhesive b prevents the cushioning material 3 from sinking when walking, so that the normal part sinks moderately, but only the actual joint part becomes hard and the sinking partly becomes uneven. In some cases, causing a reduction in walking sensation.

In the case of the flooring material shown in FIG. 10 in which the side surfaces below the real part (the ridges 10 and the concave grooves 20) are surfaces 11 and 12 which are slightly inclined inward, Although the gap d as described above is avoided by the adhesive b entering the formed space, the adhesive d hardened in the space still hinders the sinking of the cushioning material 3, and In some cases, the walking feeling at the joint was reduced.

As shown in FIG. 8, the end face of the cushioning material 3 is slightly retracted from the lower peripheral side surface of the wooden base material 2 so that the adhesive b which has swelled at the time of actual joining is removed from the cushioning material 3.
Even if an attempt is made to accommodate the gap in the gap e formed between them, this space is not sufficient, and the adhesive may overflow from the joint to the surface. Since the back surface 1a of the woody base material 2 abuts on the cured adhesive b, it was not possible to avoid that the actual joint portion felt hard during walking. Further, the adhesive b hardened by sinking causes the back surface 1a of the
A sound is generated when it comes into contact with and separates from the adhesive 6 for adhering the cushioning material, which is applied to the floor, and this contributes to floor noise.

An object of the present invention is to provide a flooring material which solves the above-mentioned inconvenience which is often caused when the flooring material is laid while sliding the floor material with the adhesive applied to the laying surface. Specifically, even if a swelling of the adhesive caused by sliding on the uncured adhesive surface is present in the actual joint portion, a floor material that does not cause a reduction in walking feeling due to the curing of the adhesive is obtained. It is in. It is another object of the present invention to provide a flooring material capable of suppressing generation of noise due to tackiness between a raised portion of an adhesive and an adhesive for bonding a cushioning material applied to the back surface of a wooden base material.

[0011]

Means for Solving the Problems The flooring according to the present invention for solving the above-mentioned problems is basically composed of a wooden base material, a cushioning material provided on the back surface of the base material, and a periphery of the wooden base material. A floor material having a ridge and a concave groove for a real joint to be formed on, and laying on a substrate by a real joint to each other,
The floor material is formed such that a cavity having a predetermined width is formed on the lower surface side of the actual seam joint at the time of the actual seam joint, whereby the swelling of the adhesive formed on the back surface side of the actual seam joint is reduced. It is characterized in that it does not come into contact with the back surface of the wooden base material.

According to the flooring material of the present invention, even if an adhesive is applied to the floor substrate surface in the same manner as before and the flooring material is laid in a state where the adhesive is not cured, the floor material is formed at the actual joint. When the wooden base material sinks, the raised portion of the adhesive does not come into contact with the back surface of the wooden base material and the adhesive for bonding the cushioning material applied to the back surface, and the walking feeling at the actual joint part is reduced. A decrease in walking sensation due to the feeling of being only stiff is avoided, and at the same time, a sound is prevented from being generated when the adhesives come and go.

[0013] Preferably, the cushioning material is provided such that its end surface is located at a position substantially equal to or slightly protruding from the lower peripheral surface around the wooden substrate. In this case, it is also possible to prevent the adhesive formed on the actual joint portion from coming into contact with the peripheral surface of the wooden base material, and the walking feeling is further prevented from being reduced.

In the flooring material of the present invention, as the material of the wooden base material and the material of the cushioning material, those conventionally used for flooring materials can be used as they are. Also, the configuration may be the same as the conventionally known wooden base material for flooring.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the flooring material of the present invention will be described in more detail with reference to preferred embodiments. In the flooring material of the present invention, ridges and grooves formed around the wooden base material for the real joining, that is, excluding the structures near the male and female nuts, FIG. May be the same as a conventionally known floor material described based on the above. Therefore, the same reference numerals are given to the same members, and the detailed description is omitted.

FIG. 1a shows a state in which flooring materials A1 and A2 according to an embodiment of the present invention are placed on a floor substrate G to which an adhesive b is applied. In this example, the wood substrate 2 is made of one piece of plywood as shown in FIG. 11, and a long ridge (male) 10 is formed on one long side and one short side. Groove (female) 2 on the other long side and the other short side
0 is formed. The upper peripheral side surface 22 of the female nut 20
Is lower than the upper peripheral surface 22 by a distance L1 than the upper peripheral surface 22.
The protrusion distance of the male 10 from its upper peripheral side surface 12 is D ′
(D ≧ D ′> 0), and the lower peripheral side surface 11 is positioned more inward than the upper peripheral side surface 11 by a distance L2.

The end face 3a of the cushioning member 3 on the female nut 20 side is
Slightly, for example, 2
mm, and the male material 1 of the cushioning material 3
The end surface on the 0 side is substantially the same as the surface of the lower peripheral side surface 11 on the male side 10 or protrudes by about 2 mm. In FIG. 1, one floor material A1 is fixed to the corner portion of the floor substrate G in a partially broken state as described with reference to FIG. 6, and the male part 10 side is a real joint side. I have. The floor material A2 is placed on the floor substrate G to which the adhesive b has been applied, with the female grain 20 side of the floor material A1 as the male grain 10 side of the floor material A1, and in FIG. Is slightly slid along. As shown in the figure, the uncured adhesive b is slightly raised on the end surface of the cushioning material 3.

FIG. 1B shows a state in which the floor material A2 is further slid to complete the actual joining with the floor material A1. As described above, the lower peripheral side surface 21 of the female seed 20 is located inward of the upper peripheral side surface 22 by the distance L1.
0 has a lower distance L than the upper peripheral side 12.
Since only two are located inward, a space S having a width of (L1 + L2) and a height equal to the height of the lower surface of the male nut 10 is formed on the lower surface of the actual joint portion.

Due to the movement of the floor material A2, the uncured adhesive b
Although the swelling amount becomes even larger, the whole amount is accommodated in the space S without being in contact with the wooden base material 2,
The top P and the ceiling T of the space S (that is, the ridge 10)
The lower peripheral side surface of the ridge 10 is located at a position recessed inward from the upper peripheral side surface, and a sufficient distance from the lower peripheral side surface (the lower surface of the ridge 10) is also ensured. (In fact, when the sinking amount of the flooring material (the maximum sinking distance) is Q, Q <
(TP) may be used. Therefore, even if the wooden substrate 2 descends due to the sinking of the cushioning material 3 during walking, the top P of the cured adhesive b and the back surface of the wooden substrate 2 (the space S
Collision with the ceiling T) is avoided, and the flooring can sink as intended. Therefore, the walking sensation at the actual spliced joint is hardened only at that portion, so that the walking sensation is not reduced, and no sound is generated due to the impact, and no floor noise occurs.

FIG. 2 shows a state in which floor materials according to another embodiment are joined by real joining. This floor material A 'is a cushioning material 3
The floor A shown in FIG. 1 is different only in that the end face 3a on the female grain 20 side is the same as the lower peripheral side surface 21 on the female grain 20 side.
Is different. In this case, the adhesive b raised by the sinking of the cushioning material 3 is applied to the lower peripheral side surface 2 of the female nut 20.
Although it is conceivable to touch the ceiling 1 of the empty space S, it is possible to avoid contact with the ceiling 1, so that the walking sensation does not decrease as in the case of FIG. It is also possible to prevent the floor noise from occurring due to the occurrence of the noise.

FIG. 3 shows a state in which flooring materials according to another embodiment are actually joined. The flooring material A ′ has substantially the same configuration as that shown in FIG. 2 except that the ceiling T, which is the lower surface side of the male member 10, has a step between the lower peripheral side surface 11 and the upper peripheral side surface 12. They differ in that they are meant to have.
In this case, the thickness of the male nut 10 can be increased by the amount of the step, and there is an advantage that the structural strength is increased. Of course, a step is provided so that the adhesive b raised by the sinking of the cushioning material 3 does not contact the ceiling T. Thereby, without causing a decrease in walking feeling, and
The floor noise is also avoided.

FIG. 4 shows a state in which flooring materials according to another embodiment are joined by real joining. The flooring material A ′ has substantially the same configuration as that shown in FIG. 2 except that the ceiling T, which is the lower surface side of the male member 10, has a step between the lower peripheral side surface 11 and the upper peripheral side surface 12. The difference is that the lower peripheral surface 21 of the female nut 20 is located outside the upper peripheral surface 22 by a distance L3. In this case,
The thickness of the male nut 10 can be increased by the height of the step, and in addition to the increase in structural strength, the engagement depth between the male nut 10 and the female nut 20 becomes deep, so that the cushioning material 3 sinks. This has the advantage that it is possible to suppress the generation of sliding contact noise due to the abutment of the wooden materials in the actual engagement portion by the insertion.
The occurrence of so-called floor noise can also be suppressed.

FIG. 5 shows a state in which floor materials according to another embodiment are joined by real joining. This floor material A 'has substantially the same configuration as that shown in FIG. 4, but differs only in that the ceiling Ta, which is the lower surface side of the male member 10, is an inclined surface. In this case, there is an advantage that male processing for forming the void is simplified.

In the flooring material of the present invention, the size of the space formed on the lower surface side of the actual joint portion, that is, the width and height of the space are determined by the type of the adhesive applied to the floor substrate surface. The width (distance of L1 + L2 in the embodiment of FIG. 1) is 4 mm to 10 mm, preferably about 5 mm to 8 mm, and the height is 3 mm to 8 mm. It is about. Further, it is not always necessary to provide the distance L1 between the upper peripheral side surface 22 and the lower peripheral side surface 21 of the female nut 20. The upper peripheral side surface 22 and the lower peripheral side surface 21 may be the same surface, or The side peripheral side surface 21 may be located forward of the upper side peripheral side surface 22 so that the width of the space S is formed only by the L2. In this case, there is an advantage that the joining portion does not easily rise.

As described above, the shape of the wooden base material 2 is arbitrary, and is not limited to a single sheet as shown in FIGS.
A large number of unit plates as shown in FIG. 10 may be collected. The longitudinal end of the wooden substrate 2 does not need to be stepwise, and may be linear. Male 1 of cushioning material 3
The end surface on the zero side may also be located at a position protruding from the lower peripheral side surface 11 to the space S side, so that a bump between the raised adhesive and the wooden base material is more reliably avoided.

In the description, when laying on the floor substrate G, the female base 20 of the wooden base material 2 is set in the forward direction, so that the end face of the buffer member 3 on the female base 20 side is empty. However, when the laying operation is performed with the male member 10 in the forward direction, the end surface of the buffer member 3 on the male member 10 side is protruded into the hollow member S. In any case, the protrusion amount is preferably about 1 mm to 2 mm.

[0027]

According to the flooring material of the present invention, even if the laying operation is performed in a state where the adhesive applied to the floor substrate surface is uncured,
The raised part of the adhesive formed in the real joint part does not come into contact with the back surface of the wooden base material when the cushioning material sinks, and the walking feeling of the real joint part feels hard only in that part A decrease in walking sensation is avoided. Thereby, a good walking feeling can be always maintained. Furthermore, the sinking causes the cured adhesive to come into contact with or separate from the adhesive for bonding the cushioning material applied to the back surface of the wooden base material, thereby making it possible to reliably prevent so-called floor noise.

[Brief description of the drawings]

FIG. 1A is a cross-sectional view showing a state in which a floor material according to an embodiment of the present invention is placed on a floor substrate to which an adhesive has been applied, and FIG. 1B is a cross-sectional view showing a state after actual joining. FIG.

FIG. 2 is a cross-sectional view showing a state in which floor materials according to another embodiment of the present invention are joined by actual joining.

FIG. 3 is a cross-sectional view showing a state where floor materials according to another embodiment of the present invention are joined by actual joining.

FIG. 4 is a cross-sectional view showing a state where floor materials according to another embodiment of the present invention are joined by actual joining.

FIG. 5 is a cross-sectional view showing a state where floor materials according to another embodiment of the present invention are joined by actual joining.

FIG. 6 is a diagram illustrating an operation of placing a floor material on a floor substrate.

FIG. 7A is a cross-sectional view showing a state in which a conventional floor material is placed on a floor substrate coated with an adhesive, and FIG. 7B is a cross-sectional view showing a state after the actual joining.

FIG. 8 is a cross-sectional view showing a state where floor materials according to another conventional form are joined by real joining.

FIG. 9 is a top view showing an example of a conventional floor material.

FIG. 10 is a sectional view taken along line XX of FIG. 6;

FIG. 11 is a sectional view showing another conventional floor material.

[Explanation of symbols]

A (A1, A2): floor material, 2: wood base material, 3: cushioning material,
10: convex shape (male), 11: lower peripheral side surface on the ridge side, 12
... Upper peripheral side surface on the ridge side, 20 ... concave groove (female), 21 ... lower peripheral side surface on the concave groove side, 22 ... upper peripheral side surface on the concave groove side, S: lower peripheral side surface on the convex ridge side. A void formed by being set inward from the upper peripheral side surface, b: adhesive, G
…substrate

Claims (4)

[Claims] 1. A wood base material, a cushioning material provided on the back surface of the base material, and a ridge and a concave groove formed around the wood base material for real joining, and real joining is performed. A floor material laid on a substrate by bonding, wherein the floor material is
A floor, wherein the lower peripheral side surface of the ridge is receded inward from the upper peripheral side surface so that a space of a predetermined width is formed on the lower surface side of the actual joint. Wood. 2. A wood base material, a cushioning material provided on the back surface of the base material, and a ridge and a concave groove formed around the wood base material for real joining, wherein the real base is connected to each other. A floor material laid on a substrate by bonding, wherein the floor material is
A void having such a size that the swelling of the adhesive formed on the back surface side of the real joint does not abut against the back surface of the wood base material is formed on the lower surface side of the real joint. Characteristic flooring. 3. The end face of the cushioning material is located at a position substantially equal to or slightly protruding from a peripheral surface on a lower surface side around a wooden base material. Flooring. 4. The end surface of the cushioning material, which is at least the end surface of the cushioning material which is in the forward direction at the time of laying work on the substrate, is located at a position substantially equal to or less than the peripheral surface on the lower surface side around the wooden base material. The flooring according to claim 1 or 2, wherein the flooring is slightly protruded.