JP2013204252A - Floor material and floor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a floor material of synthetic resin capable of preventing electrification, and a floor.SOLUTION: A surface layer 4 made of a synthetic resin is laminated on a base layer 3 made of a synthetic resin. Wooden powder and an antistatic agent are blended at least in the surface layer 4. A plurality of concave grooves 5 are arranged in parallel on the upper surface side of the surface layer 4 in the longitudinal direction, such that the surface layer 4 has a surface electrical resistance value of less than 1.0×10Ω/sq. The wooden powder in the surface layer 4 creates wooden texture and reduces the surface electrical resistance value of the surface layer 4 to less than 1.0×10Ω/sq. In addition to this, the concave grooves 5 arranged in parallel on the upper surface side of the surface layer 4 allows the contact area with footwear of a person traveling on the surface layer 4 to be reduced by the amount corresponding to the concave grooves 5. Consequently, the generation of static electricity can be effectively reduced.

Description

  The present invention relates to a synthetic resin floor material and a floor.

  Conventionally, for example, a floor material that is a hollow deck material containing wood powder is spreading in use because it is lightweight and rich in wood texture. However, in Patent Document 1, for example, a floor plate is along the length direction of the floor plate. Disclosed is a floor structure made of a hollow extruded material having a plurality of elongated hollow portions, and using a floor plate made of a synthetic resin containing a cellulose material such as wood flour as the floor plate. Yes.

  However, in the above floor structure, since a floor board made of synthetic resin is used, when a person walks on the floor structure, static electricity is generated due to friction between the shoe sole and the floor board. When touching the door knob, the static electricity charged on the human body was conducted, causing pain in the fingertips of the hand.

  In order to solve such a problem, for example, in Patent Document 2, a long floor material in which an antistatic agent is mixed into a synthetic resin composition is formed, and even a floor material made of a synthetic resin can be used as much as possible. An invention for reducing charging is disclosed.

JP 2005-344371 A JP 2002-276141 A

  However, although the above-mentioned long floor material is designed to reduce charging by mixing an antistatic agent, there still remains a problem that it has not yet been prevented from being charged.

  The present invention intends to provide a synthetic resin floor material and floor capable of solving the above-described problems and reducing the generation of static electricity.

In order to achieve the above object, the present invention is configured as follows.
That is, in the flooring according to the present invention, a surface layer made of a synthetic resin is laminated on a base layer made of a synthetic resin, and the surface layer is formed by mixing wood powder and an antistatic agent with the synthetic resin. The electrical resistance value is less than 1.0 × 10 ¹² Ω / □, and a plurality of concave grooves are arranged in parallel on the upper surface side.

  In the surface layer, 85 to 50 wt% of a polyolefin-based synthetic resin and 15 to 50 wt% of wood flour are blended, and an antistatic agent is 8 with respect to 100 parts by weight of the total blending amount of the synthetic resin and wood flour. It is preferable that -20 weight part is mix | blended.

  The floor according to the present invention is characterized by being formed by arranging a plurality of the above-mentioned flooring materials in parallel.

According to the flooring of the present invention, the wood texture is revealed by the wood powder of the surface layer, and the electrical resistance value of the surface layer is less than 1.0 × 10 ¹² Ω / □, The resistance value is small, and in addition to this, the concave groove arranged in parallel on the upper surface side reduces the area of contact with the person's footwear etc. moving on the upper surface side by the amount of the concave groove. Can be effectively reduced.

It is a perspective view which shows embodiment of the flooring which concerns on this invention. It is an enlarged view of the front view of the A section of FIG. It is a perspective view of the floor formed by arranging a plurality of flooring materials according to the present invention. It is a graph which shows a time-dependent change of a surface resistance value.

Next, the best mode for carrying out the present invention will be specifically described with reference to the drawings.
P is a flooring according to the present invention, has a horizontally long cross-sectional shape, and is formed with three substantially rectangular hollow portions 1 along the longitudinal direction of the flooring P. Is partitioned by two vertical ribs 2 provided in the vertical direction. And on the base layer 3 which comprises the upper side, lower side, and side wall of the hollow part 1, the surface layer 4 is laminated | stacked over the perimeter.

  Further, both end portions of the upper base layer 3a and the lower base layer 3b of the hollow portion 1 are projected to the left and right to form an upper projecting portion 31 and a lower projecting portion 32. It is bent so as to face each other and is formed in a dovetail shape. In the upper projecting portion 31 and the lower projecting portion 32, the surface layer 4 is laminated on the base layer 3.

  The surface layer 4 has a plurality of grooves 5 (35 in this embodiment are arranged at an equal pitch) arranged in the longitudinal direction on the upper surface side, and the floor material P formed in a long shape is a base material. A plurality of floors are formed on N. When the person moves on the concave groove 5, the contact area that contacts the person's footwear or the like is reduced by the amount of the concave groove compared to the case where the concave groove 5 is not provided. In this embodiment, the direction of the groove 5 is provided in the longitudinal direction of the floor material P, but the direction is not particularly limited, and may be provided in a direction orthogonal to the longitudinal direction of the floor material P. , May be provided in an oblique direction.

Both the base layer 3 and the surface layer 4 are made of synthetic resin, and the base layer 3 is blended with wood flour to satisfy the required strength of the flooring material, and the surface layer 4 also satisfies the required strength of the flooring material. In addition, wood powder is blended so that the wood texture appears on the surface, and further, an antistatic agent is blended in the surface layer 4 so that the surface layer 4 has an electric resistance value of 1.0. × 10 ¹² Ω / □. The surface layer 4 is composed of 85 to 50 wt% of a polyolefin-based synthetic resin and 15 to 50 wt% of wood flour, and an antistatic agent is added to 100 parts by weight of the total amount of the synthetic resin and wood flour. 8 to 20 parts by weight is blended, and depending on the blending ratio, the electrical resistance value of the surface is less than 1.0 × 10 ¹² Ω / □.

  Antistatic agents include ionic surfactants such as anionic, cationic, and nonionic surfactants, conductive polymer systems such as polyaniline, polythiophene, polypyrrole, and polyquinoxaline, tin oxide, antimony oxide, and oxidation. Metal oxides such as indium are generally used, and the type is not particularly limited. Moreover, these may be used independently and may use 2 or more types together.

  The blending ratio of the wood powder of the surface layer 4 may be selected as appropriate within the range of 15 to 50 wt%. However, the blending ratio of the wood powder for the base layer 3 is increased, and the blending ratio of the surface layer 4 is thereby increased. It is preferable to reduce it. The reason is that increasing the blending ratio in the base layer 3 can increase the strength, and reducing the blending ratio of the surface layer 4 prevents the brittleness caused by the wood powder and the deterioration of weather resistance. It depends on what you can do. In addition, it is preferable to mix | blend wood powder about 45-80 wt% with respect to the compounding ratio of the wood powder of the base layer 3 with respect to the total compounding quantity of the synthetic resin which comprises the base layer 3, and wood powder.

  By making the wood powder of the surface layer 4 into the blending ratio as described above, the surface layer 4 can be made more flexible and the impact absorbing performance can be further enhanced. With such a blending ratio, it is possible to prevent problems such as cracking of the surface layer 4 when an impact is applied to the surface layer 4.

  The synthetic resin used for the base layer 3 and the surface layer 4 is a polyolefin-based synthetic resin, for example, polyethylene, polypropylene, polybutene, polybutene, polyisoprene, polymethylpentene, ethylene-propylene copolymer, ethylene-vinyl acetate copolymer. Polymer, ethylene-α-olefin copolymer, ethylene-ethyl acrylate copolymer, ethylene-unsaturated carboxylic acid copolymer, neutralized metal, etc., or a mixture of two or more thereof, etc. can do. Among them, polyethylene resin is preferably used in terms of rigidity, surface hardness, linear expansion coefficient, good dimensional stability, weather resistance, and the like required as a flooring material.

  The flooring P of the present invention may be foamed as necessary. Any conventionally known technique can be used as the foaming technique. In general, chemical foaming can be classified into chemical foaming, which generates gas by thermal decomposition or chemical reaction, and physical foaming, which heats a low-boiling point liquid to vaporize, and chemical foaming agents include inorganic sodium bicarbonate and carbonic acid. Ammonium, ammonium bicarbonate, ammonium nitrite, sodium borohydride, light metal, azide compound and the like, and azo, nitroso, hydrazide and the like as organic foaming agents can be used in any combination. In particular, physical foaming is mainly used for foaming at a high foaming ratio exceeding 2 times, and carbon dioxide gas and aliphatic hydrocarbons are mainly used as foaming agents. In addition, a chemical foaming agent is often used in combination with physical foaming to adjust the cell shape of the foam.

  In addition, the flooring P of the present invention includes, for example, a heat stabilizer, an acid neutralizer, an ultraviolet absorber, a light stabilizer, a colorant such as a pigment or a dye, a filler, an antistatic agent, an antibacterial agent, An antifungal agent, a lubricant, a nucleating agent, a flame retardant, an antiblocking agent, a dehydrating agent, a gloss adjusting agent, and the like may be added.

  The base layer 3 and the surface layer 4 are preferably formed integrally by extrusion molding. In this case, the synthetic resin material used to form the base layer 3 surface layer 4 is made of a thermoplastic synthetic resin having compatibility with each other. It is preferable to use the same type, more preferably the same type. For example, when a polyethylene resin is used as the thermoplastic synthetic resin for forming the base layer 3, an ABS resin or the like may be used as the thermoplastic synthetic resin for forming the surface layer 4, and preferably a polyolefin resin such as a polypropylene resin. More preferably, it is preferably formed using a polyethylene resin in the same manner as the base layer 3.

  Further, the hollow portion 1 is not limited to the one surrounded by the base layers 3a, 3b, and 3c located on the upper side, the lower side, and the side walls as shown in the present embodiment, and the lower part of the upper base layer 3a is in a hollow state. If it is open, it may be opened downward.

  In the present embodiment, the surface layer 3 is laminated over the entire circumference of the flooring material P. However, the surface layer 3 may be laminated only on the upper surface side of the flooring material P that particularly requires shock absorbing performance. The surface layer 3 may be laminated on the upper surface side and both side surfaces of the flooring P.

Next, examples of the flooring according to the present invention will be shown.
The shape and size are the same as those shown in FIG. 1, the horizontal width including the overhanging portion 31 is 162 mm, the vertical width is 50 mm, the thickness of the base layer 3 a on the upper side of the hollow portion 1 is 3.4 mm, and the surface layer 4 The thickness is 0.8 mm, and the thickness of the vertical rib 2 is 4.2 mm. As a comparative example, a floor material of the same shape and the same size that does not contain an antistatic agent in the surface layer 4 is used.

  The flooring material of the example is a mixture of polyethylene resin and wood flour for the base layer 3, and the blending ratio of the wood flour is 45 to 80 wt with respect to the total blending amount of the polyethylene resin and wood flour. The surface layer 4 is a blend of polyethylene resin, wood powder, and antistatic agent, and the blending ratio thereof is 85-50 wt% polyethylene resin and 15-15 wood flour. 50 wt% is blended, and 8 to 20 parts by weight of an antistatic agent is blended with respect to 100 parts by weight of the total blended amount of polyethylene resin and wood flour. The base layer 3 and the surface layer 4 are obtained by coextrusion molding. As described above, the floor material of the comparative example was not co-extruded with the surface layer 4 of the floor material of the example, and was co-extruded.

These flooring materials were formed to a length of 300 mm to produce test specimens, and the test specimens were used to measure changes over time in surface resistance values in accordance with JIS K 6911. The results are shown in FIG. From this result, the surface resistance value of the example is initially less than 1.0 × 10 ¹¹ Ω / □, and even after 7 days, the surface resistance value is less than 1.0 × 10 ¹² Ω / □. Since the electric resistance value of the layer is small, this and the concave groove 5 combine to effectively reduce the generation of static electricity. On the other hand, the comparative example is 1.0 × 10 ¹³ Ω / □ or more in the initial stage, and even after 7 days, the value exceeds 1.0 × 10 ¹² Ω / □. Even if the electrical resistance value of the surface layer is large and the concave groove 5 is formed, static electricity is likely to be generated as compared with the embodiment.

  The present invention is not limited to the description of the embodiments and examples of the invention described above, and various modifications are included in the present invention without departing from the scope of the claims and within the scope of a person skilled in the art. Needless to say.

DESCRIPTION OF SYMBOLS 1 Hollow part 2 Vertical rib 3 Base layer 3a Base layer 3b Base layer 3c Base layer 31 Upper overhang part 32 Lower overhang part 4 Surface layer 5 Groove P Floor material N Base material

Claims (3)

A surface layer made of a synthetic resin is laminated on a base layer made of a synthetic resin, and the surface layer is made of a synthetic resin blended with wood flour and an antistatic agent, and the surface has an electric resistance value of 1.0 × 10. Floor material characterized in that it is less than ¹² Ω / □ and a plurality of concave grooves are arranged in parallel on the upper surface side.   In the surface layer, 85 to 50 wt% of a polyolefin-based synthetic resin and 15 to 50 wt% of wood flour are blended, and an antistatic agent is 8 with respect to 100 parts by weight of the total blending amount of the synthetic resin and wood flour. The flooring material according to claim 1, wherein -20 parts by weight is blended.   A floor formed by arranging a plurality of flooring materials according to claim 1 or 2 formed in a long shape.

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