JP3041233U - Cork / rubber floorboard - Google Patents

Abstract

(57) [Abstract] [Problem] To realize a floor board material that is soft to the touch, has slip resistance on the floor surface such as a bathroom or poolside, and has good drainage and water resistance. SOLUTION: Cork particles having a bulk density of 0.7 to 1.0 g / cm ³ and a particle size of 1.5 mm or less are used in a volume ratio of 0.6.
Or 0.8, it is dispersed and mixed in rubber, and a protrusion having an area of about 13.4 mm to 16.8 mm diameter is formed on the surface of a panel press-molded to have a specific gravity of 0.95 to 1.10. A large number of them are formed and arranged with a density such that the total area of all the protrusions is 35% to 55% of the panel area. The protrusion is selected to have a uniform height of 0.5 mm to 1.5 mm, preferably 0.7 mm, and a rounded portion 12a having a radius of 0.7 mm to 0.3 mm is provided at a corner portion of the upper surface periphery. The cushioning properties, anti-slip properties, and friction properties are improved, and the floor plate material is suitable for walking. It is hygienic as it has antifungal, insect and bactericidal properties, and its water resistance and abrasion resistance are dramatically improved.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a cork / rubber floor plate material, and more specifically, it is suitable for preventing slippage on a floor such as a bathroom or poolside where water flows, has high stability against temperature changes, and is non-slip during bare foot walking. The present invention relates to a floor material having improved properties.

[0002]

[Prior art]

 As floorboards laid on the floors of houses, offices, vehicles, etc., PVC panels and linoleum panels have been widely used for a long time, except for fiber carpets. PVC floor materials often have, for example, a three-layer structure such as vinyl chloride sheet, inner rarer as a bulking material, and fiber sheet. That is, a cushioning material that gives a soft feeling when walking is provided as an intermediate layer, and a highly wear-resistant surface layer that has been aesthetically treated so as to sandwich the cushioning material and a bottom layer that enhances adhesiveness during construction. It consists of

PVC panels are easily deteriorated when exposed to ultraviolet rays, and chlorine gas is generated when burned. Furthermore, the color may fade in less than a year in hospitals where it is wiped with an antiseptic solution. By the way, there is expansion and contraction of -0.60% when left at -20 ° C for 24 hours and + 0.55% when left at 100 ° C for 24 hours, and the dimensional stability is low. For example, when installing in the winter, it is necessary to consider the growth in the summer by leaving a slight gap between the floor boards. Therefore, one of the difficulties is that the adhesive strength may be weakened at the joints of the panels or the skin may be partially peeled off due to hardening.

The above-mentioned linoleum panel is popular as a natural material, but the bulking material is an inner rare under the linoleum sheet, and the lowermost layer, that is, the back surface of the panel is a fiber sheet. While this has the advantage of being easy to clean, it has the drawback of excessive adhesion when walking with bare feet, cracking where heavy walking is repeated, and burning or melting immediately when touching a hot object. is there.

By the way, recently, since it is a natural material that has a high cushioning property and is hard to slip and has a good walking property, a floorboard material using cork has been attracting attention. In other words, cork is extremely airtight, but it is porous and gives a gentle touch to the skin, and as it can be seen from the fact that it is used for stoppers such as dogs, it has natural antibacterial properties. Has become.

[0006] Such cork is being made into a thin plate and is overlaid on a rubber plate to form a flooring material. However, it is not easy to achieve high adhesion between the cork and the rubber in the panel manufacturing, and it is easy to peel off or tear off during use. In addition, it is not easy to maintain the adhesion between the rubber surface and the floor surface for a long period of time, although it is not as good as a PVC panel. In addition, since it is a polymer of materials with different degrees of flexibility, there is a handling problem that it breaks easily when it is bent or impacted, and at the present stage it is still in a stage where it cannot be put to practical use.

Therefore, usually, a panel made of cork alone, a surface of which a vinyl plate is adhered, a surface finish of which is reinforced urethane, and a ceramic finish or a wax finish are adopted. ing. Of course, there is also a special one in which a sponge molded product is integrated on the cork board in order to further enhance the soundproofing effect and heat insulation.

Since all of the above-mentioned floor board materials generally have a smooth surface, they often have a bad walkability because they look good but are slippery. Since we wear shoes etc. outdoors, there are relatively few problems, but indoors where we walk with bare feet pose problems such as familiarity with the soles and the amount of slippage. Also, if the sole of the foot is excessively attached, the walking property is rather impaired.

[0009]

[Problems to be Solved by the Invention] By the way, floors that are exposed to water, such as bathrooms and poolsides, are usually porcelain tiled, and in unit baths, etc., they are often left as plastic surfaces. However, since these floor surfaces are wet or slightly slippery under running water or under flooded conditions, various measures are taken on the surface.

[0010] A typical example of improving the anti-slip property is to give unevenness to the surface of the floor material, but in a unit bath or the like, some beads having a simple shape are given, and with a linoleum panel, a gentle undulation is performed. Are given. However, its size is large close to the ground contact area of the foot due to manufacturing reasons, and the effect as a non-slip cannot be expected to be large. On the other hand, if unevenness is formed on a PVC panel or cork panel, it is undeniable that the corners of the panel easily become chipped.

As a floor board material having irregularities for preventing slippage, there is a panel mainly made of rubber. Among them, there is a floor material made of rubber mixed with cork particles, which has the advantage of extremely high flexibility and good workability. Since the panel is press-molded, it is relatively easy to form irregularities on the surface using a pressing die, and it is also superior in terms of water resistance.

As described above, there is a floorboard material in which rubber is used as a main material and cork particles are mixed, and protrusions of about 1 cm ² which are rhombic or rectangular in a plan view are densely formed on the surface. The height of the protrusions is about 1.5 mm to 2 mm, and thin grooves are formed between the protrusions. For example, if it is attached to the deck of a fishing boat, it will be very effective as a non-slip material.

This is because a certain amount of corners is left on the upper peripheral edge of the protrusion for the purpose of forming the above-mentioned protrusion and facilitating walking in boots or the like. Cork particles having a diameter of 5 mm or less are mixed, and the mixing amount is at most 3% by weight of rubber. In this way, since the panel has a high rubber content, the uneven wear is relatively small, but the improvement in cushioning property due to cork is not remarkable.

Grooves are provided on this floor plate material in consideration of drainage as described above, but the total area of the grooves is small, and the total area of all the protrusions is about 20% to 30% of the panel area. Stays in. However, if such floor boards are used for floor surfaces such as bathrooms and poolsides where walking with bare feet is unavoidable, it is easy for people to feel uncomfortable, such as stepping on pebbles. Further, since the protrusions are relatively high, water is easily dammed up, and the drainage property is significantly reduced.

Different from the above-mentioned small-area protrusions, there are also protrusions having a 2 cm square or 2.5 cm diameter provided at intervals of about 5 mm. In this case, the contact surface between the upper surface of the protrusion and the sole of the foot becomes large, and if the ground contact surface of the thumb, on which the force is most applied, happens to be completely on one protrusion, it becomes slippery. This not only causes the contact surface to be wide, but also causes water droplets to easily adhere to and accumulate on the upper surface of the protrusion.

As described above, if the area of one protrusion is too small or too large for the ground contact surface of the foot, the comfort of the sole becomes poor. In addition, when the area ratio of the protruding portion to the non-projecting portion is large and the protruding portion is high, a water channel for draining becomes complicated and a flow channel that easily collides with a side portion of the protruding portion is formed. It goes without saying that the slip resistance tends to be impaired if water stagnates between the protrusions. Conventionally, when providing protrusions, there is a tendency to attach importance to the design of the surface without considering the places and environments where they are used individually, and it may not be functionally superior. Many.

On the other hand, in the present age where the population is aging and the number of swimming people who use leisure time is increasing rapidly, it is a social issue to control the occurrence of a fall accident in the bathroom or poolside as much as possible. There is. Therefore, from an ergonomic point of view, we improved walkability such as prevention of slippage and improved touch, and related to drainage that can promote drainage in all directions. The advent of floorboards is desired.

Incidentally, one of the things often requested recently is floor renovation work. For example, if you want to replace a bathroom with porcelain tiles with a slip-resistant material as the family ages, or if you want the poolside floor to immediately have anti-slip properties without having to completely renovate the pool. It should be noted that the demand is increasing.

In such a case, the construction is carried out by a procedure in which the existing floor material such as porcelain tiles is peeled off, the ground is remade with concrete, and a new floor material is attached. This will require a great deal of time and effort for the floor replacement work. Therefore, if a new floor material can be attached directly to the existing floor material, it will be easier to solve construction problems. However, in such renovation work, there are problems in whether high adhesion with the existing floor material can be obtained and whether sufficient waterproofness can be secured.

The present invention has been made in view of the above problems, and an object thereof is to provide a comfortable touch and to prevent slippage of a floor surface which is likely to be wet or submerged in a bathroom or poolside, as much as possible. Not only is it highly water-drainable and highly waterproof, it also has very little expansion and contraction due to temperature changes, can be butt-constructed throughout the season, and can be used directly on top of existing floor materials with almost no problem. It is an object of the present invention to provide a cork / rubber floor board material that can be adhered with good adhesiveness and can speed up and simplify repair work.

[0021]

[Means for Solving the Problems]

INDUSTRIAL APPLICABILITY The present invention is applied to a floor plate material used for a floor surface that is easily exposed to a wet or flooded condition such as a bathroom or poolside. The feature is that referring to FIG. 1, the cork particles 11 having a bulk density of 0.7 g / cm ³ to 1.0 g / cm ³ and a particle diameter of 1.5 mm or less have a volume ratio of 0.6 to At 0.8, it was dispersed and mixed into rubber, and the specific gravity was 0. A large number of protrusions 12 having a diameter of 13.4 mm to 16.8 mm or an area equivalent thereto are formed on the surface of the panel press-molded to have a diameter of 95 to 1.10. The protrusions are arranged at a density such that the total added area is 35% to 55% of the panel area, and are selected to have a uniform height of 0.5 mm to 1.5 mm, preferably 0.7 mm. Then, a rounded portion 12a having a radius of 0.7 mm to 0.3 mm (see FIG. 3) is applied to the corner portion of the upper surface periphery of each protrusion 12.

[0022]

[Effect of the invention]

According to the present invention, the floor board material has a bulk density of 0.7 g / cm ³ to 1.0 g / cm ³ and the cork particles 11 having a particle diameter of 1.5 mm or less are used as rubber in a volume ratio of 0.6 to 0.8. Since it is a panel that is dispersed and mixed and press-molded to have a specific gravity of 0.95 to 1.10, it exhibits cushioning properties, slip resistance, and friction properties suitable for walking. In addition, it is mildew-proof, insect-proof, and bacteriostatic and hygienic, and its water resistance and abrasion resistance are dramatically improved, making it durable for long-term use.

A large number of protrusions having a diameter of 13.4 mm to 16.8 mm or an area corresponding thereto are formed on the surface of the panel, and the total area of all the protrusions is 35% to 55% of the panel area. Since it is arranged with a high density, the protrusions are not densely or excessively dispersed, and it gives a feeling of strangeness like stepping on pebbles on the floor surface such as a bathroom or poolside where walking with bare feet is forced. There is no. An appropriate number of projections come into contact with each grounding part of the foot to ensure a good fit with the soles of the feet. It will be improved further.

Furthermore, the protrusions are arranged at a density of 35% to 55% of the panel area as described above, and the heights are uniformly selected from 0.5 mm to 1.5 mm, preferably 0.7 mm. Since the corners of the upper surface of each protrusion are rounded with a radius of 0.7 mm to 0.3 mm, a large amount of cork particles and particles with a large particle size can be mixed, and the high cork content causes It becomes easier to exert the effect peculiar to the cork. Not only that, it is soft to the touch, has improved drainage, is less prone to dust adhesion, and is easier to clean.

The floor board material also has the following advantages. Since it has low thermal expansion and contraction, it can be easily bent and deformed, and it has high resilience, it can be easily adapted to the groundwork and simplifies floor material construction. It can be easily applied to the refurbishment of bathroom and poolside floor materials, and will be easily adaptable to renovation work in preparation for the aging population.

[0026]

[Embodiment of the invention]

 A cork / rubber floorboard material according to the present invention will be described below in detail with reference to the drawings showing an embodiment thereof. FIG. 1 is a plan view of the floor plate material 10. The vertical and horizontal sizes are 300 mm × 300 mm, and the thickness is about 3 mm. Of course, the present invention is not limited to this, and 900 mm × 1800 mm, 900 mm × 900 mm, and 450 mm × 450 mm panels can be manufactured as standard products and commercialized.

The sheet or panel as the floor board material is mainly composed of cork and rubber, and contains some additives in addition to the above. Among the main materials, cork has a bulk density of 0.7 g / cm ³ to 1.0 g / cm ³ and particles of 1.5 mm or less, and has a volume ratio to rubber of 0.6 to 0.8. It is uniformly dispersed and mixed, and is vulcanized and pressed to form a panel having a specific gravity of 0.95 to 1.10.

That is, the amount of cork particles mixed in is approximately 5% to 25% in terms of weight ratio to rubber. This is a content higher than the maximum of 3% of the conventional products described in the section of the prior art. Due to this high cork content, the characteristic of cork, that is, the cushioning property and the anti-slip property suitable for contact with bare feet can be obtained, and the bacteriostatic property can be dramatically improved. This is largely due to improvements in molding technology, but as will be described later, the height of the protrusions is significantly reduced and the corners around the upper edge of each protrusion are rounded. It was also realized by paying attention.

In the above-mentioned conventional product, since the protrusion is high and a corner is intentionally left around the upper edge thereof, a high rubber content is required. Detailed studies by the present inventor have revealed that if the cork content is 3% or less, it is difficult to exhibit the above-mentioned effects peculiar to cork, and it is not easy to avoid the adhesion of scales and scales. On the other hand, it was also found that when the cork content was more than 25%, the floorboard became brittle, and the cork content rate was selected based on these findings.

Referring to FIG. 1, a large number of protrusions 12 having a circular shape in plan view are formed on the surface of the panel. There are many ways of arranging the protrusions, but they are arranged, for example, in a grid pattern or a staggered pattern. Then, the distribution of each protrusion is made uniform so that the added area of all the protrusions becomes 35% to 55% of the panel area. Any geometrical shape can be selected for this protrusion, and it may be triangular, rectangular, or rhombic, or a small group of a few small strips in parallel arranged in different directions. You can also However, for the reasons described below, it is most preferable that the circular shape or an elliptic shape close to the circular shape is arranged in a staggered arrangement.

The protrusion 12 has a diameter of 13.4 mm to 16.8 mm or an area corresponding thereto. Especially, for example, in the case of a circular plan view, a diameter of about 15 mm is preferable, and when it is arranged with the above-mentioned density, the distance between adjacent protrusions is appropriate so as not to obstruct the flow of water. It will be If the size and the arrangement density are selected in this way, the ground contact portions of the toe portion and the heel portion respectively ride on the appropriate number, that is, 7 to 10 of the protrusions 12, which gives a discomfort to the sole of the foot. Instead, the non-contact part is left on the contrary to prevent slippage and facilitate walking. That is, if the added area of all the protrusions exceeds 55% of the panel area, the rate of contact of the foot with the upper surface of the protrusion is increased, and if the added area is 35% or less, the rate of contact with the non-projected portion 13 is high and the slip resistance It falls and becomes easy to fall.

Although the array density of the protrusions 12 is 35% to 55% of the panel area as described above, it is best to arrange the protrusions in a staggered arrangement. As shown in FIG. 2, the water flow 21 in the front-rear direction and the water flow 22 in the oblique direction are straight lines on the non-projection portion 13, and the drainage is extremely good. The flow 23 in the left-right direction collides with the protrusion 12, but since it has a roundness, it becomes an oblique flow 22a in a solid line direction or a broken line 22b depending on whether or not the floor surface is inclined. Of course, since the protrusion 12 is low, it is not hindered to directly pass over the protrusion when the amount of flowing water is large.

In the example of FIG. 1, the projection has a diameter of 15 mm, and when the virtual section 31 of 133.2 mm × 144.8 mm indicated by the alternate long and short dash line is focused, there are 48 projections. In this case, the total area of the protrusions / panel area = 8,478.0 mm ² / 19,28 7.4 mm ² = 0.44. Of course, the same value will be obtained in the sections that are increased or decreased by 1 pitch each. By the way, when there are 48 protrusions with a diameter of 13.4 mm, the total area of protrusions / panel area is 0.35, and when the protrusions have a diameter of 16.8 mm, the total area of protrusions / The panel area becomes 0.5 5.

By the way, in order to prevent the sole of the foot from being stimulated during walking, in the floor board material, the height of each protrusion is 0.5 mm to 1.5 mm, preferably 0.7 mm. It has been selected to have a uniform height. Moreover, as shown in FIG. 3A, a rounded portion 12a having a radius of 0.7 mm to 0.3 mm is formed at the corner portion around the upper edge of the protrusion 12. The R applied is determined so as to match the height of the protruding portion 12, but as shown in (b) of the figure, the rounded portion 12b is formed at the boundary between the protruding portion 12 and the non-projecting portion 13. Can be attached.

The height of the above-mentioned protrusion is obtained by the present inventor after testing various dimensions, but is significantly lower than the conventional height of 1.2 mm to 1.5 mm. When wearing shoes, a height of 1.2 mm or more may be sufficient. On the contrary, such a height is superior in walking ability, but bare feet have a height of about 0.7 mm and R is present at the corners. Then, it realizes walking without impairing the feel.

Such a low-profile floor board material is extremely suitable for a bathroom floor surface or poolside. That is, since the non-projection portion is secured to 65% to 45% of the panel area, the flow moving through the non-projection portion is not blocked by the projection portion, and water or hot water flows without stagnation. Sufficient waterways are secured. Therefore, a floor surface with as much drainage as possible is formed. Of course, because the corners are removed, the flow of water is good, but it is also easy to clean because it is less likely to get dust.

Moreover, as will be described below, it can also be used as a floorboard material that is easy for floor repair work. In other words, this type of floor board material is mainly composed of cork and rubber, and its weight ratio is approximately 1: 3 to 1:19. Therefore, it has the following characteristics and is suitable not only for new construction but also for remodeling. Is.

This floor board material has an expansion and contraction of −0.4% to −0.2% when left at −20 ° C. for 24 hours and + 0.3% to + 0.1% when left at 100 ° C. for 24 hours. is there. However, this is less than half of the above-mentioned value for PVC flooring. That is, it is ± 0.1% in the temperature range of −20 ° C. to 80 ° C., and the expansion / contraction amount is ± 0.3 mm when the panel side length is 300 mm. This is based on the fact that the cork is porous, which is a collection of air bubbles, and the fact that it is mixed with rubber makes it difficult for the size and hardness to change with temperature.

Therefore, it can be seen that, due to the low thermal expansion and contraction, there is almost no occurrence of thermal stress that causes the bonded panel to peel off from the base. Thus, dimensional stability with respect to ambient temperature is unmatched by other types of flooring. Therefore, there is no need to open a gap at any time, and it is possible to always work by abutting.

In the case of reforming, if the existing floor plate material as the base is cleaned, it can be placed directly on it. For example, epoxy is used as the adhesive, and even if the existing floor material is magnetic tile, it has the effect of filling the joints and preparing the groundwork, and when hardened it becomes harder than concrete. As mentioned above, it is sufficient to butt the ends together and the adhesive is water resistant. This floor board has no water permeability, and even if there is a slight gap between the panels, the adhesive will enter and there is no risk of water leakage.

As can be seen from this, even if the existing flooring material is a PVC panel, if it is not greatly deformed, it can be adhered on it while maintaining water resistance. It can also be applied directly on slippery marble. As will be described later, since it has a property that it is easily adapted to the base, it is possible to attach it to a place where the curved surface of the rising part such as a step of a bathtub or a pool changes so as to adapt to its shape. Therefore, when preparing for an aging family, it is easy to change from a porcelain tile to a floor with high slip resistance. Due to its low thermal expansion and contraction, the panel may be wider than 300 mm × 300 mm.

The physical and chemical characteristics of the floorboard material according to the present invention will be briefly described below. First, there is a slip test (slip resistance) that is unique to floor board materials, and generally it is required to be 0.4 or more for floor materials that are difficult to slip. According to the test of JIS A1407, it reaches 0.72 even when the floor plate material according to the present invention is not provided with a protrusion. Even if it gets wet with water, it is 0.48. As described above, the expansion and contraction with respect to heat is extremely small and the thermal deformability is extremely low. In addition, it is flame-retardant and has a flame diffusion index of 0, which means that it is extremely safe against fire, and is greatly improved over products made from PVC or linoleum. No chlorine gas was generated in the toxic gas content test, and cyanite gas was extremely small, so the safety was extremely high.

The walking comfort, especially the feel, is much more easily accepted than other panels because most of the material is cork and rubber. In the dent amount test according to JIS A7055-6.5, it is 1.32 mm to 1.46 mm at 20 ° C to 45 ° C, which is confirmed to be soft. The water resistance is extremely good, and it can be used outdoors as a floor material. The change over time is extremely small, and it does not deform like jumping up like a PVC panel.

Since the specific gravity of this panel is 0.95 to 1.10, it is lighter by about 40% than the vinyl chloride panel in terms of weight, and is extremely easy to handle during construction. Especially when using a panel with a large area, the work load is small, and it is easy to bend and restore, so handling is easy, including transportation. In addition, when it is installed, it is easy to adhere to it simply by placing it on the base, and even if there is some undulation on the base, the panel will sit comfortably. Of course, the ease of cutting with a cutter also improves workability.

The floor board material can be applied not only to a bathroom or the like but also to a normal room such as a living room. Since it is a cork and rubber, it does not accumulate static electricity, and it is easy to remove dust with a vacuum cleaner. The antibacterial action of cork exerts mildew-proof and insect-proof properties, and is hygienic without house mites. Since cork is made into particles and mixed with rubber for pressure molding, it has the same sealing effect as wine stoppers, has almost no hygroscopicity, and even if water is spilled, it will soak into the floor and reach the floor base. There is no. By the way, it also has the features of high chemical resistance and oil resistance.

[Brief description of the drawings]

FIG. 1 is an overall plan view of one panel of a floor board according to the present invention.

FIG. 2 is an enlarged plan view of a panel for explaining how water flows while avoiding a protrusion.

FIG. 3 shows an enlarged view including the roundness applied to the protrusion,
FIG. 6A is a cross-sectional view of an example in which the peripheral edge of the upper surface has no corners, and FIG.

[Explanation of symbols]

10 ... Floor board material, 11 ... Cork particles, 12 ... Projection part, 12
a ... Roundness.

Claims (1)

[Utility model registration claims] 1. A floor board material used for a floor surface that is easily exposed to a wet or flooded condition such as a bathroom or poolside, and has a bulk density of 0.7 g / cm ³ to 1.0 g / cm ^3. 13. The surface of a panel obtained by mixing cork particles having a particle diameter of 1.5 mm or less in rubber in a volume ratio of 0.6 to 0.8 and press-molding so that the specific gravity becomes 0.95 to 1.10. A large number of protrusions having a diameter of 4 mm to 16.8 mm or an area corresponding thereto are formed, and the total area of the protrusions is 35% of the panel area.
The protrusions are arranged to have a uniform density of 0.5 mm to 1.5 mm, preferably 0.7 mm, and the protrusions have a height of 0.7 mm. To 0.3
Cork / rubber floor board material with rounded radius of mm.