JP2531566Y2 - Flooring material for refurbishment - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a floor sticking material for a reform to be stuck on an existing floor material.

[Prior art and its problems] An existing normal flooring material is used as a soundproofing flooring material, or similarly, an existing soundproofing flooring material is used as a soundproofing flooring material with further enhanced soundproofing performance, or simply, the existing flooring material is re-designed. Conventionally, when renovating floor materials, the existing floor materials have to be completely removed and replaced.

However, in this reattachment work, the work itself is troublesome and troublesome, and the construction period is long.

In addition, the cost is extremely high, and returning to the original floor requires the same labor, time and expense, which is not easy.

Furthermore, in the case of a rental condominium or the like, the re-covering work, which is extremely difficult as described above, cannot be performed freely without permission.

In view of these points, the present invention provides a flooring material for renovation that can easily change the pattern of the existing flooring material by simply laminating and pasting it on the existing flooring material, and at the same time improve the soundproofing. The structure in which a cushion layer was stuck on the back of thin plywood was examined.

As a result, it was found that the floor adhesive material having the above configuration had the following problems.

(A) In general, the thickness of the front veneer and the back veneer among the veneers constituting the plywood is such that they are in contact with each other while the fiber direction is substantially orthogonal, and the veneer veneer (at the time of 5 plies) or the core veneer ( (3 ply time), the internal stress due to the swelling / shrinking motion due to the fiber direction of the core veneer, or the core veneer, or the core veneer and the fiber The directions are orthogonal to each other, and large stress is generated in the front veneer and the veneer veneer for suppressing the swelling / shrinking motion of the core veneer or the core veneer.

Here, when a surface thin veneer is affixed on the veneer veneer so that the fiber direction is the same as that of the veneer veneer, the veneer veneer has a reinforced shape with respect to the fiber direction. Thus, it is possible to cope with the stress caused by the swelling / shrinking motion of the core veneer or the core veneer.

As a result, the stress dispersed on the front and back veneers is:
It would concentrate on the veneer veneer, causing warpage in the plywood.

For this reason, when constructing the floor material, floating occurs, and the workability is reduced. In addition, the adhering property of adjacent floor materials is deteriorated, which results in poor finish after construction.

Further, the influence of the warp also appears at the interface between the plywood and the cushion layer adhered to the back of the plywood, and causes delamination.

(B) Adhesion of the cushion layer to the back surface of the plywood resulted in the adhesion of different materials to the wood substrate of the plywood, failing to obtain good adhesion between the two, and causing the delamination in combination with the warpage. .

[Means to solve the problem and its operation]

The present invention has created the following means to solve the above problems. That is, an odd number of veneers are applied to the flooring material for renovation so that the fiber direction is the same as the front and back veneers 2, 4 on the front and back of the plywood 1 laminated so that the fiber directions thereof are orthogonal to each other. 0.2 thinner than single veneer
The front and back thin veneers 5 and 6 each having a thickness of about 0.8 mm are adhered, and the cushion layer 7 is laminated on the back surface of the back thin veneer 6.

The flooring material for renovation of the present invention has low warpage after construction, does not cause delamination of the cushion layer, and has high soundproofing performance due to the idea of the above configuration.

[Description of configuration]

 Hereinafter, the configuration of the present invention will be described with reference to the drawings.

 FIG. 1 is a side sectional view of the floor adhesive according to the present invention.

As the plywood 1, a three-ply plywood composed of a three-layer veneer of a front veneer 2, a core veneer 3, and a back veneer 4 was used.

In this plywood 1, the fiber direction of the front veneer 2 and the back veneer 4 matches the length direction of the plywood 1, and the fiber direction of the core veneer 3 is the fiber direction of the front veneer 2 and the back veneer 4. It is arranged so as to be orthogonal to.

The number of plies of the plywood is not limited to three plies, but may be any ordinary plywood in which an odd number of single veneers such as five plies and seven plies are laminated with their fiber directions orthogonal to each other.

However, when considering that it is laminated and used on the existing flooring surface as a flooring material for renovation, 2.0 mm to 4.0 mm
It is preferred to use

When the thickness of the plywood is less than 2.0 mm, sufficient surface strength as a floor material cannot be obtained, and scratches and depressions are likely to occur.

On the other hand, if it is larger than 4.0 mm, the distance between the soundproofing layer and the surface of the existing flooring material becomes too large, resulting in a reduction in the soundproofing effect inherent in the existing flooring.

At this time, the thickness of the front veneer and the back veneer are compared with the thickness of the core veneer (for 5 plies) or the core veneer (for 3 plies), which are in contact with each other while making the fiber direction substantially orthogonal. It is composed thinly.

On the surface of the veneer 1 of the plywood 1, a surface thin veneer 5 for surface decoration is adhered in the same direction as the fiber direction of the veneer 2.

In this case, the fiber direction of the surface veneer veneer 5 is the surface veneer 2 of the plywood 1.
The reason for the lamination and adhesion in the same manner as above is, of course, in the point of the surface design, but the swelling and shrinkage of the core veneer 3 whose fiber direction is orthogonal and whose thickness is larger than that of the veneer veneer 2 This is because the front veneer is reinforced in the same fiber direction to reduce the stress that the veneer is subjected to due to the internal stress due to the movement.

The surface thin veneer 5 may be any of a hardwood veneer, a softwood veneer, an artificial veneer, or a rotary cut veneer slice cut veneer.

On the surface of the back veneer 4 of the plywood 1, a back layer thin veneer 6 is provided.
And the same in the fiber direction.

Like the surface thin veneer 5, the back layer thin veneer 6 may be any of a hardwood veneer, a softwood veneer, an artificial veneer, or a rotary cut veneer or a slice cut veneer.

Since the back veneer veneer 6 has the same fiber direction as the back veneer 4 and takes the form of reinforcing the back veneer in the same fiber direction, the fiber direction suppressed by the surface veneer veneer 5 is different and the thickness is large. Concentration of the stress on the back veneer plate 4 due to the internal stress received from the core plate 3 can be prevented, and as a result, the plywood can be stabilized against warping and warping.

For this reason, the surface thin veneer 5 and the back layer thin veneer 6 are
Since it is necessary to distribute and receive the stress due to the internal stress received in a well-balanced manner, it is preferable to use the same thickness.

Although it is preferable to use the same tree species as the tree species to be used, different tree species can be used.

The thickness of the surface thin veneers 5 and 6 is preferably about 0.2 to 0.8 mm. The surface thin veneer 5 is considered in view of its surface properties and economy, and the back layer thin veneer 6 will be described later. It is derived after considering the function as an adhesion mediator between the wooden base material and the cushion layer 7 which is a different material.

As described above, it is necessary for the surface thin veneer 5 and the back layer thin veneer 6 to be used under substantially the same conditions in order to uniformly disperse the internal stress of the core veneer 3. The intended purpose cannot be achieved with paper, non-woven fabric, or the like that is completely different from the material of the surface layer veneer 5 in place of the back layer veneer 6.

A cushion layer 7 is adhered to the back surface of the back layer thin veneer 6.

The cushion layer 7 is formed of a cushioning material capable of imparting soundproof cushioning properties, such as a synthetic resin foam, for example, a polyethylene foam, a polystyrene foam, a polyurethane foam, or the like, or a foamed rubber such as a synthetic rubber. Since the flooring material for renovation according to the invention of the present application is used by pasting it on an existing flooring material for the purpose of interior renovation, the cushion layer 7 takes into consideration the unevenness of the pasting surface like a conventional direct-attached floorboard. No need. For this reason, it is possible to use a thin cushion layer, and accordingly, the foaming ratio is increased by 20 to 30 times, compared to the cushion layer stuck on the back of the existing flooring material. Can be used.

The thickness of the action layer is preferably 17% to 63% of the thickness of the plywood including the front and back layer thin veneers used.

The thickness of the cushion layer is the plywood thickness including the front and back layer thin veneer.
If it is less than 25%, it is not possible to sufficiently back up the absorption capacity of the plywood including the front and back layer thin veneers against impacts such as lightweight floor impact sound generated on the surface thin veneer, The soundproofing is reduced.

Conversely, if the thickness of the cushion layer is greater than 63% of the plywood including the front and back layer veneers, the amount of sinking becomes conspicuously large, and there is a clear difference between the joints of the floor adhesives. Not only will it cause it, but the sink will also be noticeable to the human body, causing discomfort.

The cushion layer 7 is attached to the plywood 1 with the back layer thin veneer 6 interposed.

At this time, the back layer thin veneer 6 has good adhesion on the bonding surface with the plywood 1 because of the familiarity of the wooden substrates. Further, the bonding surface d of the back-layer thin veneer 6 with the cushion layer 7 is made resin by the adhesive c that has permeated into the back-layer thin veneer 6 when the back-layer thin veneer 6 is bonded to the plywood 1. State
Good compatibility with the cushion layer is obtained, and excellent adhesive strength is obtained.

From this point, the thickness of the thin backing veneer is limited to 0.2 to 0.8 mm.

That is, when the thickness is less than 0.2 mm, the seepage of the adhesive onto the surface becomes excessive, and the penetration into the inside of the cushion layer occurs, and the rigidity of the cushion layer is increased. I can't get it.

On the other hand, if the thickness is larger than 0.8 mm, the adhesive does not sufficiently penetrate, and the contact interface with the cushion layer cannot be made into a resin, that is, the adhesive surface of a different material with the conventional wood substrate is formed. As a result, the adhesive strength is reduced, and as a result, delamination between the plywood and the cushion layer tends to occur.

That is, through the intermediary of the backing thin veneer 6, it is possible to obtain a strong bonding effect even when bonding different materials such as the plywood 1 and the cushion layer 7.

Therefore, delamination between the plywood substrate and the cushion layer can be completely prevented.

[Function and Effect] Core single veneer 3 (at the time of 5 plies) core veneer 3 which is in contact with front veneer 2 and back veneer 4 of plywood 1 while making the fiber direction orthogonal and has a thickness larger than these. The internal stress caused by the swelling / shrinking movement caused by the fiber direction (at the time of 3 plies) is suppressed by making the fiber directions orthogonal to each other. On both surfaces of the veneer 4, the fiber direction is the same as that of both veneers, and 0.2 to 0.8 mm thinner than the veneer constituting the plywood 1.
The front veneer 2 and the back veneer 4 can be reinforced in the same fiber direction because the surface veneer veneers 5 and 6 having the thickness of 5 mm are stuck. The fiber direction is perpendicular to the back veneer 4 and the reinforcing veneer veneer or the veneer veneer has a large thickness.

At the same time, since the reinforcement balance of the stress suppressing force can be maintained uniformly, the workability and finishability can be improved without warping and warping of the floor material.

Since the back veneer veneer 6 is interposed between the back veneer 4 of the plywood and the cushion layer 7, the bonding surface of the back veneer veneer 6 having a thickness of 0.2 to 0.8 mm with the plywood is In addition, good adhesion can be obtained because of the familiarity of the wooden substrates, and the back surface thin veneer 6 is adhered to the bonding surface d with one cushion layer 7 by the adhesive c that has permeated into the back layer veneer 6. The surface is made of resin, and the affinity with the cushion layer 7 can be increased and the adhesiveness can be improved.

That is, by interposing the back layer thin veneer between the plywood back veneer and the cushion layer, an effective joint effect between the plywood and the cushion layer can be achieved, and strong adhesion without delamination can be obtained. .

By sticking and applying the floor covering material to an existing soundproofing floor material, further soundproofing performance can be provided by a synergistic effect with the soundproofing performance of the existing soundproofing flooring material.

Although it is a flooring material made of a combination of a plywood and a cushion layer, it can provide high soundproofing without any warping or undulation without excessive sinking. A flooring material for renovation can be obtained. By sticking the flooring material on an existing flooring material with a commercially available double-sided tape or the like, the construction is simple, short, and the cost is low, and the soundproofing performance is improved. Reform of flooring is possible while raising.

In addition, even if the flooring material for renovation is peeled off, the existing flooring material on which the flooring material has been affixed will not be damaged, so that it can be used in rental apartments and the like.

EXAMPLES Examples of the present invention will be described below.

A front and back thin veneer 0.25 mm using zelkova natural wood is stuck on the front and back veneer of 3-ply Laura plywood composed of front veneer 0.5 mm, core veneer 1.5 mm and back veneer 0.5 mm.

The surface of the surface veneer veneer adhered on the veneer veneer is coated to give a cosmetic property.

A polystyrene foam having a foaming ratio of 30 times and a thickness of 1.2 mm is further adhered as a cushion layer to the back layer thin veneer adhered on the back veneer.

In this way, a 4.2 mm-thick flooring material free of warpage and warping and having excellent workability and finish was obtained.

The obtained floor covering material was applied on an existing soundproof floor with a commercially available double-sided tape. As a result, the soundproofing can be further improved by a synergistic effect between the cushion layer having a high foaming ratio on the back surface of the flooring material and the existing soundproofing floor.

At this time, the reformed flooring material can be peeled off without damaging the surface of the original flooring material by attaching the flooring material to both sides of the existing flooring material with a double-sided tape or the like on the back surface of the cushion layer. Was.

[Brief description of the drawings]

The drawing is a cross-sectional view of the flooring material of the present invention. 1: Plywood, 2: Front veneer, 3: Core veneer, 4: Back veneer, 5: Surface thin veneer, 6: Back layer veneer, 7: Cushion layer, c: Plywood and front and back veneer D: adhesive surface between the back layer thin veneer and the cushion layer 7.

Claims (1)

(57) [Scope of request for utility model registration] 1. A veneer comprising an odd number of veneers laminated such that their fiber directions are orthogonal to each other, so that the fiber direction is the same as the front and back veneers 2, 4 on the front and back sides of the plywood 1. Thinner
A flooring material for renovation, comprising a back layer thin veneer 6 and a cushion layer 7 laminated on the back and back thin veneers 5 and 6 having a thickness of 0.2 to 0.8 mm.