JP3460188B2 - Floor material for stairs - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floor material for stairs, which has good sound insulation, shock absorption, slip resistance, durability, application strength and the like, and can exert an excellent effect of reducing shock noise.

[0002]

2. Description of the Related Art Conventional stairs made of iron or stairs made of concrete have a drawback that they have a large impact sound when they are moved up and down and are slippery. Therefore, by sticking a rubber sheet or a synthetic resin sheet on the tread surface of the stairs, or from the tread surface to the riser surface, it is possible to reduce the impact noise at the time of climbing the stairs and to improve the slip resistance.

[0003]

However, since the rubber sheet has poor weather resistance and durability, there is a problem that it deteriorates in a relatively short period of time. Also, since the rubber sheet cannot be firmly attached with an adhesive, it is attached to the stairs using a rubber-based adhesive, but when it is attached with a rubber-based adhesive like this, the synthetic rubber sheet is misaligned. There is a risk that pedestrians will trip because it is easy to peel off or peel off.

On the other hand, the synthetic resin sheet has better weather resistance and durability than the rubber sheet, but since the sound insulating property and the shock absorbing property are not so good, the effect of reducing the impact sound when climbing the stairs is insufficient. There was a problem. Also, the synthetic resin sheet can be attached more firmly than the rubber sheet by using an adhesive, but if there is a small unevenness on the tread of the stairs, the synthetic resin sheet is attached in a state of being in close contact with the tread. However, the adhesive strength is reduced, the synthetic resin sheet is easily peeled off, and there is a risk that the pedestrian may trip, as in the case of the rubber sheet.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide good sound insulation and shock absorption, to exhibit an excellent shock noise reduction effect, and to provide a small tread on the stairs. An object of the present invention is to provide a stair flooring material that can be firmly attached so that peeling or displacement does not occur even if there are irregularities, and that also has good slip resistance and durability.

[0006]

In order to achieve the above object, a floor material for stairs according to claim 1 of the present invention is for stairs, which is used by being attached to stairs, and which comprises a synthetic resin sheet and a soft foam layer. In the floor material, the front edge portion of the synthetic resin sheet is bent downward by approximately 90 °, a build-up portion is formed at the seat corner portion, and a convex pattern is formed on the surface of the seat horizontal portion that is the tread surface. The soft foam layer is formed and is a layer having a thickness of about 3 to 7 mm and having closed cells formed by expanding a mixed resin of polyethylene and an ethylene-vinyl acetate copolymer at a foaming ratio of about 30 to 40 times. It is adhered to at least the back surface of at least the horizontal portion of the synthetic resin sheet via an acrylic adhesive agent.

A mixed resin of polyethylene and an ethylene-vinyl acetate copolymer (hereinafter referred to as EVA) is used in an amount of 30-40.
Thickness 3 with closed cells that have been expanded at approximately twice the expansion ratio
Since the soft foam layer of about 7 mm is a layer that is flexible, has a high impact absorption property, is excellent in sound insulation, and has a proper elasticity, the soft foam layer is at least the back surface of the horizontal portion of the synthetic resin sheet. When the floor material for stairs according to claim 1 of the present invention, which is adhered to, is applied to stairs, the level of impact sound generated is significantly reduced, as evidenced by the experimental data described later.

Further, when this stair flooring material is attached to a staircase, even if there is a small unevenness on the tread surface of the staircase, the convex part bites into the soft foam layer from below, and the soft foam layer and the tread surface of the staircase. Since and are adhered in close contact, the stair flooring material can be firmly adhered.

Further, when a convex pattern is formed on the surface of the horizontal portion of the synthetic resin sheet like this floor material for stairs, this convex pattern exerts a good anti-skid action. Further, the synthetic resin sheet has better weather resistance than the rubber sheet and is less likely to deteriorate, and moreover, since the built-up portion is formed in the sheet corner portion where the friction is strongest so as not to wear in a short period of time, This floor material for stairs is also excellent in durability.

[0010]

The soft foam layer of the stair flooring material has improved adhesiveness due to the mixing of EVA, and particularly has good compatibility with an acrylic adhesive (adhesive or pressure-sensitive adhesive) and provides a large adhesive force. . Therefore, if the soft foam layer is attached to the back surface of the horizontal portion of the synthetic resin sheet via an acrylic adhesive as in the above-mentioned floor material for stairs, the soft foam layer may be peeled from the synthetic resin sheet. There is no. If this stair flooring material is applied to the stairs using an acrylic adhesive, the stair flooring material will not peel off or be displaced from the stairs due to the high adhesive strength, and pedestrians may stumble. The sex can be eliminated.

Next, the floor material for stairs according to a second aspect of the present invention is the floor material according to the first aspect, wherein the rear surface of the horizontal portion of the synthetic resin sheet and the front edge portion of the sheet bent downward by approximately 90 °. Is characterized in that a soft foam layer is adhered to the back surface of the sheet, and the inside of the back surface of the sheet corner portion to which the soft foam layer is not adhered is a gap portion for filling the adhesive agent.

If a soft foam layer is also attached to the back surface of the front edge of a synthetic resin sheet bent 90 ° downward like this floor material for stairs, the effect of reducing the impact sound level becomes more remarkable. Also, when the inside of the back surface of the sheet corner portion is a void for filling the adhesive, when applying the floor material for stairs, the adhesive having excellent adhesiveness to the synthetic resin sheet is applied to the void. Since the seat corner portion, which is filled with the most pressure, can be firmly attached to the corner portion of the stairs, the attachment strength can be further improved.

Next, in the floor material for stairs according to claim 3 of the present invention, in the floor material according to claim 1 or 2, the horizontal portion of the synthetic resin sheet is extended rearward, and the rear portion of the seat horizontal portion. A plurality of cut grooves extending in the left-right direction are formed parallel to each other on the back surface closer to the back surface, and a soft foam layer is attached to the back surface of the horizontal portion of the sheet excluding the cut groove forming portions. It is a thing.

The stair flooring material having such a structure is formed by bending the rear portion of the horizontal portion of the synthetic resin sheet, which is extended along the cut groove, upward, and sticking it over the entire tread surface and riser surface of the staircase. Therefore, the effect of reducing the impact sound level becomes more remarkable.

Next, the floor material for stairs according to a fourth aspect of the present invention is the floor material according to the first or second aspect, wherein the horizontal portion of the synthetic resin sheet is extended rearward, and the rear portion of the horizontal portion of the sheet. A plurality of cut grooves extending in the left-right direction are formed in parallel on the rear surface closer to the back surface, and a soft foam layer is attached to the back surface of the horizontal portion of the sheet excluding the cut groove forming portion and the extended portion. It is characterized by that.

The extending portion of the horizontal portion of the seat is a portion that is bent upward and is attached to the riser surface of the stairs. Since the riser surface of the stairs is a surface that generates less impact noise than the tread surface, It is not always necessary to attach a soft foam layer to the extended portion of the horizontal portion of the sheet that is attached to
Therefore, even if the soft foam layer on the back surface of the extended portion of the seat horizontal portion is omitted as in the floor material for stairs according to the fourth aspect, a sufficient effect of reducing the impact sound level is exhibited.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Specific embodiments of the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a perspective view of a floor material for stairs 10 according to an embodiment of the present invention, and FIG. 2 is a sectional view showing a partially enlarged view of the floor material for stairs 10.

The floor material 10 for stairs is a synthetic resin sheet 1.
And the soft foam layer 2. Synthetic resin sheet 1
By using an olefin resin such as polyethylene or polypropylene, or a vinyl resin such as polyvinyl chloride as a base resin, and optionally adding a plasticizer, a filler, a coloring agent, a weathering agent, a reinforcing agent, etc. The sheet has a single-layer or multi-layer structure with improved physical properties and has a thickness of about 1 to 5 mm.

The front edge portion 1a of the synthetic resin sheet 1 is heat-bent to have a certain radius and a downward angle of about 90 °.
A plurality of vertical ribs 1 that are bent to prevent warpage
b are formed at regular intervals.

The surface of the horizontal portion 1c, which serves as the tread surface of the synthetic resin sheet 1, is 0.5 by embossing.
Convex patterns 1d, 1e, 1f having a height of about 2 mm are formed, and these convex patterns impart a good anti-skid function. In this embodiment, the convex pattern 1d is formed in a rectangular shape, and the convex patterns 1e and 1f are formed in square shapes having different sizes. However, the convex pattern can be circular or any other desired shape. .

The corner portion 1g of the synthetic resin sheet 1 is provided with a built-up portion 1h having the same height as the convex patterns 1d, 1e and 1f, and the built-up portion 1h is further formed on the built-up portion 1h. A plurality of drainage grooves 1i communicating from the seat horizontal portion 1c to the seat front edge portion 1a are formed at regular intervals.
The corner portion 1g of the synthetic resin sheet 1 is the portion with the most friction, but if the built-up portion 1h is formed as described above, the corner portion 1g will not be worn out in a short period of time, improving durability. To do. When the above-mentioned drainage groove 1i is formed in this built-up portion 1h, rainwater or the like that falls on the seat horizontal portion 1c flows down and drains through the drainage groove 1i, and collects on the surface of the seat horizontal portion 1c which is the tread surface. Since it does not exist, the slip resistance is further improved.

Soft foam layers 2 and 2 are attached to the back surface of the horizontal portion 1c of the synthetic resin sheet 1 and the back surface of the sheet front edge portion 1a bent downward by approximately 90 °, respectively.
The inside of the back surface of the sheet corner portion 1g to which the soft foam layer is not adhered is a gap portion 1j for filling the adhesive agent.

The soft foam layer 2 is made of polyethylene and EV.
A layer having a thickness of about 3 to 7 mm having closed cells formed by expanding a mixed resin with A at a foaming ratio of about 30 to 40 times, which is rich in flexibility and impact absorption because EVA is mixed, It also has excellent sound insulation and, because it is a closed-cell body, it also has appropriate elasticity. Therefore, the soft foam layer 2 exhibits a good impact noise reducing action. A foam layer having a foaming ratio of less than 30 times and a thickness of less than 3 mm lacks flexibility, shock absorption, sound insulation, etc., and thus it is difficult to sufficiently reduce impact noise, while foaming ratio is 40 times. The foam layer, which is higher and thicker than 7 mm, is not only too soft but also too thick as a backing layer for stair flooring,
After all it is not preferable.

Further, the soft foam layer 2 has improved adhesiveness (adhesiveness) due to the mixing of EVA, and particularly has good compatibility with an acrylic adhesive (adhesive or pressure-sensitive adhesive) and has a large adhesive force. Is obtained. So, with this floor material for stairs 10,
As shown in a partially enlarged view in FIG. 2, the soft foam layer 2 is firmly attached to the back surfaces of the sheet horizontal portion 1c and the sheet front edge portion 1a via the coating layer of the acrylic adhesive agent 3. As a result, peeling of the soft foam layer 2 is prevented. The coating layer of the acrylic adhesive 3 is 1
With a thickness of about 00 μm, a sufficient sticking force (adhesive force) can be exhibited.

The soft foam layer 2 need only be attached to at least the back surface of the horizontal seat portion 1c, and therefore the soft foam layer 2 on the back surface of the seat front edge portion 1a can be omitted. Since the impact sound when climbing the stairs is mainly generated from the tread surface of the stairs, as described above, the seat front edge 1
Even if the soft foam layer 2 on the back surface of a is omitted, the impact noise reduction effect does not deteriorate so much.

FIG. 3 is a cross-sectional view showing an example of applying the stair flooring material 10 having the above structure.

In this construction example, the stair flooring material 10 is attached to the stairs constructed of striped steel plate or the like having an uneven surface. The stair floor material 10 is overlaid on the stair floor material, and the soft foam layer 2 on the back surface of the horizontal portion 1c of the synthetic resin sheet 1 of the stair floor material 10 is attached to the tread surface 4a of the stair floor material 10 with an acrylic adhesive (not shown). In addition, the soft foam layer 2 on the back surface of the front edge 1c of the synthetic resin sheet 1 is attached to the upper part of the riser surface 4b of the stairs.
Then, a urethane-based adhesive having excellent adhesiveness with the synthetic resin sheet 1 is provided in the adhesive-filling void formed inside the back surface of the corner 1g of the synthetic resin sheet 1 of the stair floor material 10. The agent 5 is filled and the sheet corner portion 1g is firmly attached to the stair corner portion 4c.

Many small projections 4d of striped steel plate are projected on the tread surface 4a of this staircase. As shown in FIG.
These projections 4d bite into the soft foam layer 2 of the stair flooring material 10 from below, and the soft foaming layer 2 and the step surface 4a of the stairs are brought into close contact with each other, so that the stair flooring material 10 is firmly attached, and Since the corner portion 1g of the synthetic resin sheet 1 of the stair floor material 10 is firmly adhered directly to the stair corner portion 4c with the urethane adhesive 5 as described above, the stair floor material 10 is removed from the stairs. There is no concern about peeling or misalignment. Therefore, it is possible to eliminate the risk of a pedestrian tripping over and falling off the stair flooring material 10 that has been peeled off or displaced.

When the stair flooring material 10 is applied to the stairs as described above, the impact itself when the stairs are lifted is absorbed by the soft foam layer 2 considerably, so that the impact noise generated in the stairs is reduced, and moreover, this The impact sound level is greatly reduced because the impact sound level is significantly shielded by the soft foam layer 2. Therefore, the stairs can be raised and lowered quietly.

FIG. 4 is a partially enlarged sectional view showing a stair flooring material 11 according to another embodiment of the present invention.

In this stair floor material 11, the horizontal portion 1c of the synthetic resin sheet 1 of the stair floor material 10 is extended rearward,
A plurality of cut grooves 1m extending in the left-right direction are formed in parallel on the back surface near the rear portion 1k of the sheet horizontal portion 1c, and a soft foam layer 2 is formed on the back surface of the sheet horizontal portion 1c excluding the cut groove forming portions. It is attached via an acrylic adhesive (not shown). Since the rear portion 1k of the seat horizontal portion 1c, which is extended, is attached to the riser surface of the stairs as described later, no convex pattern for slip prevention is formed on the surface of the rear portion 1k, and The soft foam layer on the back surface of the seat front edge 1a is also omitted.

Since the other construction of the floor material for stairs 11 is the same as that of the floor material for stairs 10 described above, the same members are designated by the same reference numerals in FIG. Needless to say, the soft foam layer 2 may be attached to the back surface of the front edge portion 1a of the sheet.

FIG. 5 is a cross-sectional view showing an example of applying the stair flooring material 11 having the above-mentioned structure.

In this pasting example, the floor material for stairs 1
The rear portion 1k of the synthetic resin sheet 1 of FIG.
The upper floor material 11 for the stairs is folded so as to cover the entire tread surface 4a and riser surface 4b of the staircase, and the soft foam layer 2 on the back surface is covered with an acrylic adhesive (not shown). Is firmly adhered to the step surface 4a and the riser surface 4b of the stairs, and the front edge portion 1a of the synthetic resin sheet 1 is superposed and adhered to the rear portion 1k of the synthetic resin sheet 1 of the stair floor material one step below. . Then, the inside of the back surface of the corner portion 1g of the synthetic resin sheet 1 is filled with the urethane adhesive 5 to firmly adhere the corner portion 1g to the corner portion 4c of the stairs,
The urethane adhesive 5 is also filled on the back side of the cut groove 1m forming portion bent upward, and the cut groove forming portion is firmly stuck to the entry corner 4e of the stairs, and the stair flooring 11 Does not peel off the stairs.

As described above, when the stair sheet 11 is attached over the entire tread surface 4a and riser surface 4b of the staircase,
Since the impact sound level generated when climbing the stairs is significantly reduced, it is possible to climb the stairs more quietly.

In the stair seat 11 of the embodiment shown in FIG. 4, the rear portion 1 of the horizontal portion 1c of the synthetic resin sheet 1 is extended.
Although the soft foam layer 2 is also attached to the back surface of the k, the soft foam layer 2 of the extended rear portion 1k may be omitted. The extended rear portion 1k of the seat horizontal portion 1c is a portion that is bent upward and attached to the riser surface 4b of the stairs,
Since the riser surface 4b of the staircase is a surface that generates less impact sound than the tread surface 4a, even if the soft foam layer 2 is omitted as described above, the impact sound reduction effect does not deteriorate so much. .

Next, a floor impact sound level test performed on the stair floor material of the present invention and the comparative floor materials A and B will be described.

As a sample of floor material for stairs of the present invention, polyvinyl chloride sheet (thickness 2.5 mm excluding convex pattern)
Soft foam layer with closed cells of mixed resin of polyethylene and EVA (foaming ratio 35 times, thickness 5 mm)
Was prepared by bonding the above with an acrylic adhesive.

On the other hand, as a sample of floor material A for comparison,
As a sample of the flooring material B for comparison, a polyethylene foam (foaming ratio 35 times, thickness 5 mm) was pasted on the back surface of the polyvinyl chloride sheet as a sample of the floor material B for comparison. I prepared what I wore.

Then, regarding these samples, JI
A floor impact sound level test was performed based on the test method of SA 1418 (1978), and the impact sound level at each octave band center frequency was measured. Moreover, the impact sound level of only the concrete slab to which the sample was not attached was also measured. The result is shown in the graph of FIG.

Looking at the graph of FIG. 6, the impact sound level when the sample of the floor material for stairs of the present invention or the sample of the floor material for comparison B was stuck was found to be the floor material for comparison without the foam layer. It is significantly lower than the impact sound level when the sample A is attached, and it can be seen that the foam layer is extremely effective in reducing the impact sound level.

The impact sound level when the sample of the floor material for stairs of the present invention was applied was lower than the impact sound level when the sample of the floor material B for comparison having the polyethylene foam on the back surface was applied. From this, it is understood that the soft foam made of the mixed resin of polyethylene and EVA is superior in the impact sound reducing effect to the foam made of polyethylene alone.

The sample of the comparative floor material B having a polyethylene foam on the back surface is slightly lower than the sample of the floor material for stairs of the present invention in terms of the impact noise reduction effect, but the polyethylene foam is Since it has poor adhesiveness, it has the drawback of weak adhesion to stairs and easy peeling,
It is a floor material that has problems in practical use.

[0046]

As is clear from the above description, the stair flooring material of the present invention has good sound insulation and shock absorbing properties, can exert an excellent impact sound reducing effect, and has small unevenness on the tread of the stairs. Since it can be firmly attached so that peeling or misalignment does not occur even if there is, there is no risk of a pedestrian tripping over the peeled or misaligned stair flooring material and falling.
It has many outstanding effects such as good anti-slip properties and durability.

[Brief description of drawings]

FIG. 1 is a perspective view of a floor material for stairs according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view showing the floor material for stairs in a partially enlarged manner.

FIG. 3 is a cross-sectional view showing an example of affixing the stair flooring material.

FIG. 4 is a partially enlarged sectional view showing a floor material for stairs according to another embodiment of the present invention.

FIG. 5 is a cross-sectional view showing an example of affixing the floor material for stairs.

FIG. 6 is a graph showing the results of a floor impact sound level test of the floor material for stairs of the present invention and the floor materials A and B for comparison, showing the relationship between the octave band center frequency and the floor impact sound level. is there.

[Explanation of symbols]

Floor material for stairs 1 synthetic resin sheet 1a Seat front edge 1c Horizontal seat part 1d, 1e, 1f convex pattern 1g seat corner 1h Overlay part 1j Void for filling adhesive 1k Seat horizontal rear extension 1m notch 2 Soft foam layer 3 Acrylic adhesive 5 Urethane adhesive

─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-9-151595 (JP, A) JP-A-9-248872 (JP, A) JP-A-9-264060 (JP, A) JP-A-9- 264061 (JP, A) JP 10-102713 (JP, A) Actually opened 59-30439 (JP, U) Actually opened 62-166025 (JP, U) Registered utility model 3004883 (JP, U) (58) ) Fields surveyed (Int.Cl. ⁷ , DB name) E04F 11/17

Claims (4)

(57) [Claims] 1. A floor material for stairs, which is used by being attached to stairs and is composed of a synthetic resin sheet and a soft foam layer, wherein the front edge portion of the synthetic resin sheet is bent downward by approximately 90 °, and its sheet corner. In addition to forming a built-up portion on the surface, a convex pattern is formed on the surface of the horizontal portion of the sheet that serves as a tread surface. The soft foam layer is made of a mixed resin of polyethylene and ethylene-vinyl acetate copolymer. A layer having a thickness of about 3 to 7 mm having closed cells that have been foamed at a foaming ratio of about 40 times, and attached to at least the back surface of the horizontal portion of the synthetic resin sheet via an acrylic adhesive agent. It is a floor material for stairs. 2. A soft foam layer is adhered to the back surface of the horizontal portion of the synthetic resin sheet and to the back surface of the front edge portion of the sheet bent downward by approximately 90 °, and the sheet corner portion of the sheet corner portion to which the soft foam layer is not attached is adhered. The floor material for stairs according to claim 1, wherein the inside of the back surface is a void portion for filling the adhesive agent. 3. A horizontal portion of a synthetic resin sheet is extended rearward, a plurality of cut grooves extending in the left-right direction are formed in parallel on the back surface of the sheet horizontal portion near the rear portion, and the horizontal portion of the sheet horizontal portion is formed. 3. A soft foam layer is attached to the back surface excluding the cut groove forming portion, and the soft foam layer is adhered to the back surface.
Floor material for stairs described in. 4. A horizontal portion of a synthetic resin sheet is extended rearward, a plurality of cut grooves extending in the left-right direction are formed in parallel on the back surface of the sheet horizontal portion near the rear portion, and the horizontal portion of the sheet horizontal portion is formed. The soft foam layer is attached to the back surface excluding the cut groove forming portion and the extending portion.
Alternatively, the floor material for stairs according to claim 2.