JP2020094473A - Baseboard and baseboard wound body - Google Patents

Abstract

To provide a baseboard with a high easy workability and a high shock resistance to solve the problem in which a conventional baseboard needs to be easily processed (high at easy workability) at a construction site and with high shock resistance.SOLUTION: The invention has a foam resin body 10 and a non-foam resin coating layer 20 for covering at least a part of a surface of the body 10 and the body 10 and the coating layer 20 are formed together, long and flexible and its height is less than 15 cm.SELECTED DRAWING: Figure 2

Description

The present invention relates to a skirting board and a skirting board winding body.

2. Description of the Related Art Conventionally, a long skirting board has been installed along a wall at a portion where a wall of a building such as a house and the floor meet. At a construction site, a skirting board is cut into a desired length with a table-top circular saw and fixed to a wall with an adhesive or the like. A general-purpose skirting board is a medium-density fiberboard (MDF) skirting board.
Wide (high) skirting boards have been proposed for the purpose of absorbing shock when a wheelchair collides with a wall surface.
For example, Patent Document 1 proposes a skirting board having a height of 150 to 1000 mm obtained by laminating a fiber reinforcing material and a resin surface layer on a soft foam base material and cutting the laminated material at a predetermined length. According to the invention described in Patent Document 1, dimensional stability, strength and the like are improved.

Japanese Patent No. 3117622

In the conventional technique, the baseboard is cut by a table-top circular saw or the like at the time of construction according to the length of the installation place. At this time, in an apartment house, there is a problem that the operation sound of a tabletop circular saw or the like is transmitted to the adjacent room. In addition, when a skirting board having a length suitable for transportation is used and the skirting board is installed in a long range, a seam between the skirting boards is generated. If the baseboard is made long in order to eliminate the seams, the transportation and handling of the baseboard becomes complicated.
Further, when a vacuum cleaner, chair legs, or the like collides with the skirting board, a collision sound is transmitted to the adjacent room or the skirting board is damaged. Therefore, the baseboard is required to have impact resistance.
Furthermore, in the renovation of an apartment house for rent, it is necessary to complete the construction as soon as possible so that the rental of the room can be started early.
In view of the above circumstances, the conventional baseboard is required to be easy to handle at the construction site (high in workability) and to have impact resistance.
Therefore, an object of the present invention is to provide a skirting board having high workability and high impact resistance.

<1> a foamed resin body, and a non-foamed resin coating layer that covers at least a part of the surface of the body,
The main body and the coating layer are integrally molded,
Long and flexible,
A skirting board that is less than 15 cm high.
<2> The skirting board according to <1>, which has a 100% modulus of 5 MPa to 20 MPa.
<3> The baseboard according to <1> or <2>, wherein the coating layer has a Duro hardness A of 50 to 80.
<4> The skirting board according to any one of <1> to <3>, in which the bottom surface facing the floor when installed is closer to the top surface from the front to the back.
<5> The baseboard according to any one of <1> to <4>, which is a coextrusion molded article.
<6> A skirting board wound body obtained by winding the skirting board according to any one of <1> to <5>.

INDUSTRIAL APPLICABILITY The skirting board of the present invention can improve the ease of construction and the impact resistance.

It is a perspective view which shows the installation example of the skirting board which concerns on one Embodiment of this invention. It is a perspective view of a skirting board concerning one embodiment of the present invention. It is a sectional view of a skirting board concerning one embodiment of the present invention (vertical sectional view in the installed state). It is a cross-sectional perspective view of a skirting board according to an embodiment of the present invention. It is a cross-sectional perspective view of a skirting board according to an embodiment of the present invention. It is a cross-sectional perspective view of a skirting board according to an embodiment of the present invention. It is a cross-sectional perspective view of a skirting board according to an embodiment of the present invention. It is a cross-sectional perspective view of a skirting board according to an embodiment of the present invention. It is a graph which shows the measurement result of sound insulation.

In the specification and claims, "to" indicating a numerical range means that numerical values described before and after the numerical range are included as the lower limit value and the upper limit value.

A skirting board according to an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a perspective view showing an installation example of a skirting board according to an embodiment of the present invention.
As shown in FIG. 1, the skirting board 1 is installed at a mating portion between the wall W and the floor F. The baseboard 1 is made of a flexible and soft material as a whole.

FIG. 2 is a perspective view of the skirting board 1 as viewed from the front (front side of the skirting board) 20f (inside the room when installed).
As shown in FIG. 2, the baseboard 1 has a main body 10 and a coating layer 20 located on the surface of the main body 10. The skirting board 1 has a long shape extending in one direction (X direction in FIG. 2).

The front surface 20f of the skirting board is provided with a makeup concave portion 12. The makeup recessed portion 12 is a recessed line that is recessed from the front surface 20f of the skirting board toward the back surface (back surface of the skirting board) 20b of the skirting board 1. The decorative recess 12 extends in the longitudinal direction of the skirting board 1.

Two or more vertical groove portions (not shown) are formed on the back surface 20b of the skirting board. The skirting board back surface 20b is a surface facing the wall when the skirting board 1 is installed.
The vertical groove portion is a concave line that is recessed from the skirting board rear surface 20b toward the skirting board front surface 20f. With the skirting board 1 installed on the wall W, the vertical groove portion extends in the vertical vertical direction (Y direction in FIG. 2 ). In other words, the vertical groove portion extends in the direction orthogonal to the longitudinal direction of the skirting board 1. The upper end of each vertical groove portion 11 is located slightly below the top surface (baseboard top surface) 20t of the baseboard 1. Two or more vertical groove portions are arranged at intervals in the longitudinal direction of the skirting board 1.

As shown in FIGS. 2-3, a fixing recess 16 is formed on the back surface 20b of the skirting board. The fixing recess 16 is located substantially in the middle of the baseboard 1 in the vertical direction. The fixing recess 16 is a recessed line that is recessed from the skirting board rear surface 20b toward the skirting board front surface 20f. The fixing recess 16 extends in the longitudinal direction of the skirting board 1.

As shown in FIG. 3, the bottom surface (baseboard bottom surface) 20a of the baseboard 1 approaches the top surface 20t of the baseboard from the front surface 20f of the baseboard toward the rear surface 20b of the baseboard. The angle θ formed by the extension line Q1 of the baseboard bottom surface 20a and the extension line Q2 of the surface of the floor F is preferably 10 to 60°, more preferably 20 to 45°. If the angle θ is equal to or more than the lower limit value, a gap is unlikely to be formed between the lower end of the front face of the skirting board 20f and the floor F surface. When the angle θ is equal to or less than the upper limit value, the strength at the lower end of the skirting board 1 can be further increased.

The coating layer 20 covers the front surface (main body front surface) 10f, the back surface (main body rear surface) 10b, the top surface (main body top surface) 10t, and the bottom surface (main body bottom surface) 10a of the main body 10. That is, the coating layer 20 covers the surface of the main body 10 except both end faces in the longitudinal direction.

The length of the baseboard 1 in the X direction is not particularly limited and is, for example, 50 cm or more and 30 m or less.

The height H (length in the Y direction) of the skirting board 1 is less than 15 cm (150 mm), preferably 25 mm or more and less than 150 mm, more preferably 35 to 60 mm. When the height H is equal to or less than the above upper limit value, the flexibility of the baseboard 1 in the longitudinal direction can be further enhanced and the workability can be enhanced. If the height H is equal to or higher than the lower limit value, the function as a skirting board can be enhanced.

The thickness T (length in the Z direction) of the skirting board 1 is, for example, preferably 4 to 15 mm, more preferably 5 to 9 mm. When the thickness T is equal to or less than the above upper limit value, the flexibility of the baseboard 1 in the X direction can be further enhanced and the workability can be enhanced. If the thickness T is at least the above lower limit, the impact resistance can be further enhanced.

The depth A2 of the decorative recessed portion 12 is determined in consideration of the designability, and is, for example, 1 to 5 mm.
The width W2 of the decorative recessed portion 12 is determined in consideration of the designability, and is, for example, 2 to 10 mm.

The depth A1 of the fixing recess 16 is, for example, 1 to 5 mm.
The width W1 of the fixing recess 16 is, for example, 2 to 10 mm.

The 100% modulus of the baseboard 1 is preferably 5 to 20 MPa, more preferably 10 to 15 MPa. When the 100% modulus is at least the above lower limit, the strength of the skirting board can be increased. When the 100% modulus is not more than the above upper limit value, it is sufficiently soft and more excellent in flexibility.
The 100% modulus is a value obtained by a tensile test according to "JIS K6251:2010 Method of determining tensile properties".

The main body 10 is a soft and flexible foam resin.
As the type of resin constituting the main body 10, thermoplastic resin, thermoplastic elastomer, and rubber are preferable. Examples of the thermoplastic resin include hard polyvinyl chloride (PVC) resin, polyolefin resin such as polyethylene resin and polypropylene resin, mixture of polyolefin resin and polystyrene resin, ABS resin, acrylic resin, polycarbonate resin and mixture thereof. .. As the thermoplastic elastomer, soft polyvinyl chloride resin, polyolefin-based thermoplastic elastomer, chlorinated polyethylene-based thermoplastic elastomer, polystyrene-based thermoplastic elastomer, polyurethane-based thermoplastic elastomer, polyester-based thermoplastic elastomer, polyamide-based thermoplastic elastomer and These mixtures etc. can be illustrated. Examples of the rubber include styrene/butadiene rubber, isoprene rubber, chloroprene rubber, acrylonitrile/butadiene rubber, and other diene rubbers, butyl rubber, ethylene/propylene/diene rubber, silicone rubber, and mixtures thereof.
Further, the main body 10 may contain optional components such as a foam nucleating agent, a surfactant, a lubricant, a pigment and a plasticizer.

The foamed resin forming the main body 10 is soft.

The linear expansion coefficient of the main body 10 is preferably 7.5×10 ⁻⁵ /° C. or lower, more preferably 7.0×10 ⁻⁵ /° C. or lower, and further preferably 5.0×10 ⁻⁵ /° C. or lower.
The linear expansion coefficient of the main body 10 is a value measured according to JIS K7197: 1991.

The Duro hardness A of the main body 10 is preferably 50 to 80, more preferably 60 to 70. Duro hardness A is a value measured according to JIS 7215:1986.

The density of the body 10, for example, preferably from 0.4 to 0.9 g / cm ^3, more preferably 0.4 to 0.7 g / cm ^3. When the density is at least the lower limit value, the strength of the skirting board 1 can be further increased. When the density is less than or equal to the above upper limit value, the weight of the skirting board 1 can be reduced, and the workability of the skirting board 1 can be further enhanced.
The density of the main body 10 is adjusted by a combination of the type or composition of the foaming agent, foaming conditions (heating temperature, heating time, etc.).

The coating layer 20 is a non-foamed resin. The type of resin forming the coating layer 20 is the same as that of the main body 10, and among them, thermoplastic resin, thermoplastic elastomer, and rubber are preferable.
The type of resin forming the coating layer 20 and the type of resin forming the main body 10 may be the same or different. However, since it is easy to integrally form the coating layer 20 and the main body 10, it is preferable that the resin forming the coating layer 20 and the resin forming the main body 10 include the same type of resin.

The coating layer 20 may contain optional components such as a surfactant, a lubricant, talc and a pigment.

The thickness T20 of the coating layer 20 is preferably, for example, 0.5 to 1.5 mm, more preferably 0.5 to 1.0 mm. If the thickness T20 is not less than the above lower limit value, it is possible to prevent the main body 10 from being damaged by an external impact. When the thickness T20 is not more than the above upper limit value, the flexibility can be further enhanced.

The linear expansion coefficient of the coating layer 20 is preferably 7.5×10 ⁻⁵ /° C. or lower, more preferably 7.0×10 ⁻⁵ /° C. or lower, and further preferably 5.0×10 ⁻⁵ /° C. or lower.

40-90 are preferable, as for the Duro hardness A of the coating layer 20, 50-80 are more preferable, and 60-70 are more preferable.

The pencil hardness of the coating layer 20 is preferably 5B or more.

As a method of manufacturing the baseboard 1, for example, a method of integrally molding the main body 10 and the coating layer 20 by a coextrusion method is preferable. That is, the baseboard 1 of the present invention is preferably a coextrusion molded article.
An example of a method of manufacturing the baseboard 1 by the coextrusion method will be described.
The resin, the foaming agent, and the optional components constituting the main body 10 are kneaded to obtain a first resin composition.
The resin constituting the coating layer 20 and the optional components are kneaded to obtain a second resin composition.
The first resin composition contains a resin, a foaming agent, and an optional component.
Examples of the foaming agent include decomposable foaming agents, thermally expandable capsules, compressed gas and the like.
As the decomposition type foaming agent, sodium bicarbonate (sodium hydrogen carbonate), sodium carbonate, ammonium bicarbonate, ammonium nitrite, azodicarbonamide, azobisisobutyronitrile, p,p′-oxybisbenzenesulfone hydrazide, N, Examples thereof include N'-dimethyl-N,N'-dinitrosoterephthalamide.
Examples of the heat-expandable capsules include capsules in which a volatile low-boiling point hydrocarbon is encapsulated in a thermoplastic resin.
Examples of the compressed gas include carbon dioxide, nitrogen and air.
The content of the foaming agent is preferably 10 to 20 parts by mass, and more preferably 14 to 16 parts by mass with respect to 100 parts by mass of the resin.

The molten first resin composition and the molten second resin composition are coextruded. The melting temperature of the first resin composition is, for example, 90 to 180°C. The melting temperature of the second resin composition is, for example, 90 to 180°C.
The extruded first resin composition foams at atmospheric pressure to form the main body 10. The extruded second resin composition spreads on the surface of the main body 10 along the extrusion direction and is cured to form the coating layer 20.
Thus, the long baseboard 1 is obtained. The obtained skirting board 1 may be cut into an arbitrary length if necessary. Alternatively, the long skirting board 1 may be wound to form a wound body (skirting board winding body).

A method of using the baseboard 1 will be described.
For example, bring the baseboard roll to the construction site. The skirting board winding body is made compact by winding the long skirting board 1, so that it can be easily brought into the construction site.
At the construction site, the skirting board 1 is fed out from the skirting board winding body and cut into a length according to the construction site. Since the skirting board 1 is soft, it can be easily cut with a cutter knife or the like. At this time, the skirting board 1 can be more easily cut by cutting at the position of the vertical groove formed on the back surface 20b of the skirting board. Therefore, it is not necessary to use a table-top circular saw or the like, and noise is unlikely to occur.
In addition, even if the construction site is long, the baseboard 1 can be attached without forming a joint. Therefore, the construction can be completed promptly even under the condition that construction time is limited, such as remodeling of an apartment house.

An adhesive is applied or a double-sided tape is attached to the cut-out fixing recesses 16 of the skirting board 1. Next, as shown in FIG. 3, the backboard 20b is pressed against the wall W, and the baseboard 1 is attached to the wall. In this way, the adhesive or the double-sided tape in the fixing recess 16 becomes the attaching portion 30. At this time, since the bottom surface a of the skirting board is inclined in a specific direction, it is possible to prevent the lower end of the front surface 20f of the skirting board from rising from the floor F.

Since the skirting board 1 thus installed has a foamed resin main body 10 inside, it can easily absorb the impact sound even when it receives an impact and is not easily damaged. In addition, since the baseboard 1 has the coating layer 20 of the non-foamed resin on the surface, it is hard to be damaged even when it receives an impact.

In the above-mentioned embodiment, the main body is covered with the coating layer except both end faces in the longitudinal direction of the main body. However, the present invention is not limited to this. The coating layer may cover a part of the surface of the main body or both end surfaces in the longitudinal direction. However, from the viewpoint of protecting the main body which is a foamed resin, it is preferable that at least the front surface of the main body is covered with the coating layer, and it is more preferable that the coating layer covers the front surface of the main body and the top surface of the main body. It is more preferable that the main body top surface and the main body bottom surface are covered with the coating layer, and it is particularly preferable that the main body front surface, the main body top surface, the main body bottom surface and the main body rear surface are covered with the coating layer.

In the above-described embodiment, one decorative recess is formed, but the present invention is not limited to this. The decorative recesses may be two or more, or may not be formed. Further, the decorative recess may be a recess extending in the Y direction.

In the above-described embodiment, one fixing recess extending in the longitudinal direction is formed on the back surface of the skirting board, but the present invention is not limited to this.
The number of fixing recesses may be two or more, or may not be formed.
Alternatively, instead of the recessed line, a circular or polygonal concave portion for providing the attachment portion may be formed as the fixing concave portion.

In the above-described embodiment, the bottom surface of the skirting board is inclined in a specific direction. However, the present invention is not limited to this, and the bottom surface of the skirting board may not be inclined.
Alternatively, it may have a cushion portion that projects downward (toward the floor) from the bottom surface of the skirting board. The cushion portion may be a foamed resin or a non-foamed resin. Since the skirting board has the cushion portion, it is unlikely to create a gap with the floor surface.

In the above embodiment, the main body has a solid structure made of foamed resin, but the present invention is not limited to this, and a hollow structure having a hollow portion inside the main body may be used. If the main body has a hollow structure, impact resistance can be further enhanced. If the main body has a hollow structure, even if the baseboard collides with a vacuum cleaner or furniture, the volume transmitted to the adjacent room can be significantly reduced (excellent sound insulation).
An example of a skirting board having a hollow main body will be described with reference to FIGS.

The baseboard 101 of FIG. 4 has a foamed resin main body 110, and a coating layer 120 that covers the front, back, top, and bottom of the main body 110.
A decorative recess 112 extending in the X direction is formed on the front surface of the skirting board 101. The makeup recess 112 is formed in the baseboard 101 substantially in the middle in the Y direction. The baseboard 101 has the same thickness (length in the Z direction) above and below the decorative recess 112.
Inside the main body 110, a hollow portion 130 extending in the X direction is formed. The cross-sectional shape of the hollow portion 130 is similar to the cross-sectional shape of the skirting board 101. That is, the main body 110 has a uniform thickness in the cross section in the X direction.

The baseboard 201 of FIG. 5 has a main body 210 of foamed resin and a coating layer 220 that covers the front, back, top, and bottom of the main body 210.
The thickness of the skirting board 201 is thinner than the thickness of the skirting board 201.
A decorative recess 212 extending in the X direction is formed on the front surface of the skirting board 201. The decorative recess 212 is formed in the baseboard 201 substantially in the middle in the Y direction. The baseboard 201 has the same thickness (length in the Z direction) above and below the decorative recess 212.
Inside the main body 210, a hollow portion 230 extending in the X direction is formed. The cross-sectional shape of the hollow portion 230 is similar to the cross-sectional shape of the skirting board 201. That is, the main body 210 has a uniform thickness in the cross section in the X direction.
The skirting board 201 is thinner than the skirting board 101 of the first embodiment. However, since the baseboard 201 has the hollow portion 230, impact resistance can be improved.

The baseboard 301 of FIG. 6 has a main body 310 of foamed resin and a coating layer 320 that covers the front, back, top, and bottom of the main body 310.
A cosmetic recess 312 extending in the X direction is formed on the front surface of the baseboard 301. The decorative recess 312 is formed closer to the top surface than the center of the baseboard 301 in the Y direction. That is, the height h1 from the bottom surface to the decorative recess 312 is more than half the height H of the skirting board 301. Therefore, the lower side of the decorative concave portion 312 is wider than the upper side of the decorative concave portion 312. Further, in the baseboard 301, the thickness T1 below the decorative recess 312 is thicker than the thickness t1 above the decorative recess 312.
The main body 310 is a solid foam at the position of the decorative recess 312. The main body 310 has a first hollow portion 331 extending in the X direction at a position above the decorative recess 312. The main body 310 has a second hollow portion 332 that extends in the X direction at a position below the decorative recess 312.
The baseboard 301 has a large area, a large thickness, and a second hollow portion 332 below the area where a vacuum cleaner or the like is likely to collide, and thus the impact resistance can be further improved.

The baseboard 401 of FIG. 7 has a foamed resin body 410 and a coating layer 420 that covers the front, back, top, and bottom surfaces of the body 410.
A decorative concave portion 412 extending in the X direction is formed on the front surface of the skirting board 401. The decorative recess 412 is formed in the baseboard 401 substantially in the middle in the Y direction. The baseboard 401 has the same thickness above and below the decorative recess 412.
Inside the main body 410, hollow portions 431, 432, 433, 434 extending in the X direction are formed in order from above in the Y direction. That is, the hollow portions 431, 432, 433, 434 are partitioned by the partition wall of the foamed resin in the Y direction.
The hollow portion 431 is located above the decorative recess 412. The hollow portion 434 is located below the decorative recess 412. The hollow portion 432 and the hollow portion 433 are located in the decorative recess 412.
The skirting board 401 has a hollow portion partitioned by a partition wall. Therefore, the synthesis of the skirting board 401 can be enhanced.

The baseboard 501 of FIG. 8 has a main body 510 made of foamed resin, and a coating layer 520 that covers the front surface, the back surface, the top surface, and the lower surface of the main body 510.
The thickness of the baseboard 501 is thinner than the thickness of the baseboard 401.
A decorative recess 512 extending in the X direction is formed on the front surface of the baseboard 501. The decorative recess 512 is formed in the baseboard 501 substantially in the middle in the Y direction. The baseboard 501 has the same thickness above and below the decorative recess 512.
Inside the main body 510, hollow portions 531, 532, 533, 534 extending in the X direction are formed in order from above in the Y direction. That is, the hollow portions 531, 532, 533, 534 are partitioned by the partition wall of the foamed resin in the Y direction.
The hollow portion 531 is located above the decorative recess 512. The hollow portion 534 is located below the decorative recess 512. The hollow portion 532 and the hollow portion 533 are located in the decorative recess 512.
The skirting board 501 is thinner than the skirting board 401. However, since the skirting board 501 has the hollow portions 531, 532, 533, 534, the impact resistance can be improved.

Hereinafter, the present invention will be described in detail with reference to Examples, but the present invention is not limited to the following description.

(Evaluation method)
<Impact resistance>
The impact resistance was measured according to JIS K5600-5-3:1999.

<Surface hardness (pencil hardness)>
The pencil hardness was measured according to JIS K 5600-5-4:1999.

<Sound insulation>
The existing baseboard under the wall of the wooden apartment was removed, and the manufactured baseboard with a length of 30 mm was installed. One end of a pipe having a length of 1000 mm was placed with the one end facing the front of the skirting board. At this time, the one end of the pipe is the lower end, the elevation angle between the central axis of the pipe and the floor surface is 15°, the central axis of the pipe and the longitudinal direction of the skirting board are perpendicular to each other in a top view, and the lower end of the pipe (exit) The distance between the baseboard and the baseboard was 20 mm. Further, a partition plate can be inserted into the pipe at positions of 100 mm, 300 mm, 500 mm, and 700 mm from the outlet.
An iron ball having a mass of 1.0 kg was placed in the pipe, the partition plate supported the iron ball, then the partition plate was removed, the iron ball was run, and the iron ball was applied to the skirting board. At this time, the noise (indoor noise) in the room (test room) in which the skirting board was installed and the noise in the adjacent room (noise in the adjacent room) were measured with a sound level meter (ordinary sound level meter NL-42, manufactured by Lion Corporation). The test was performed by changing the position (falling position) of the partition plate in the pipe to 100 mm, 300 mm, 500 mm, and 700 mm.
The sound collecting part of the sound level meter in the test room and the adjacent room was installed at a horizontal distance of 1.5 m from the wall and a height of 1.0 m. The boundary wall with the adjacent room was a wooden boundary wall of 13 cm in thickness in which a wooden stud of 10.5 cm in thickness was arranged between two gypsum boards of 12.5 mm in thickness.

(Example 1)
Under the following conditions, the first resin composition and the second resin composition were coextruded to produce a skirting board similar to the skirting board 1 of FIG. The specifications of the obtained skirting board were as follows.
The obtained baseboard was measured for impact resistance, surface hardness and sound insulation. The result of impact resistance was that there was no damage and the dent was 0.87 mm (0.1 mm after restoration). The surface hardness was 4B (restored later). The baseboard of this example could be easily cut with a cutter knife.

<Manufacturing conditions>
-Composition of the first resin composition: Soft polyvinyl chloride resin (mixed with 100 parts by mass of polyvinyl chloride resin ("TS-1000R" manufactured by Tokuyama Sekisui Kogyo Co., Ltd.) and 50 parts by mass of dioctyl phthalate). 15 parts by mass of a chemical foaming agent (ADCA (azodicarbonamide), manufactured by Eiwa Chemical Industry Co., Ltd.).
-Composition of the second resin composition: 100 parts by mass of soft polyvinyl chloride resin (same as the first resin composition), 1 part by mass of metallic soap (lubricant).

<Baseboard specifications>
-Height: 60 mm.
-Thickness: 5 mm.
-Length: 10 m/roll.
-Thickness of coating layer: 1 mm.
-Body density: 0.6 g/cm ³ .

(Example 2)
Under the following conditions, the first resin composition and the second resin composition were coextruded to manufacture a skirting board similar to the skirting board 301 of FIG. The specifications of the obtained skirting board were as follows.
The obtained baseboard was measured for impact resistance, surface hardness and sound insulation. The result of impact resistance was that there was no damage and the dent was 0.87 mm (0.1 mm after restoration). The surface hardness was 4B (restored later). The baseboard of this example could be easily cut with a cutter knife.

<Manufacturing conditions>
-Composition of the first resin composition: 100 parts by mass of a polystyrene-based thermoplastic elastomer ("Actimer" GA-1075N manufactured by RIKEN TECHNOS CORPORATION) and 15 parts by mass of a foaming agent ("Kureha Microsphere" H750 manufactured by Kureha Co., Ltd.).
-Composition of the second resin composition: 100 parts by mass of polystyrene-based thermoplastic elastomer ("Actimer" GA-1075N manufactured by RIKEN TECHNOS CORPORATION).

<Baseboard specifications>
-Height H1: 40 mm.
-Height h1: 28 mm.
-Thickness T1:10 mm.
-Thickness t1: 7 mm.
-Length: 10 m/roll.
-Thickness of coating layer: 1 mm.
-Body density: 0.5 g/cm ³ .

(Comparative Example 1)
Impact resistance, surface hardness and sound insulation were measured for a skirting board (MDF) having the following specifications. The result of impact resistance was 0.35 mm, and breakage was recognized. The surface hardness was 2B (not restored). Further, the skirting board of this example could not be easily cut with a cutter knife.
<Baseboard specifications>
-Height: 45 mm.
-Thickness: 9 mm.
・Length: 4m/book.
-Density: 0.87 g/cm ³ .

(Comparative example 2)
The impact resistance, surface hardness and sound insulation of a baseboard (foamed polystyrene resin) having the following specifications were measured. The result of impact resistance was 0.4 mm. The surface hardness was 4B. The baseboard of this example could be easily cut with a cutter knife.
<Baseboard specifications>
-Height: 60 mm.
-Thickness: 5 mm.
・Length: 4m/book.
-Thickness of coating layer: 1 mm.
-Body density: 0.6 g/cm ³ .

As described above, in Example 1 to which the present invention was applied, the workability was high and the impact resistance was excellent.

As shown in Table 1, in Examples 1 and 2 to which the present invention was applied, the indoor noise and the adjacent room noise were smaller than the Comparative Examples 1 and 2 at any of the fall positions of 100 to 700 mm.
In addition, the noise of the adjacent room in Example 2 having the hollow portion was smaller than that in Example 1 having no hollow portion.
FIG. 9 is a graph in which the horizontal axis represents the drop position and the vertical axis represents the noise in the adjacent room (db).
In Example 2 having a hollow portion as shown in FIG. 9, the noise in the adjoining room was a volume (40 db or less) that could not be heard as noise at any falling position.

1, 101, 201, 301, 401, 501 Baseboard 10, 110, 210, 310, 410, 510 Main body 20, 120, 220, 320, 420, 520 Cover layer 20a Baseboard bottom 20b Baseboard back 20f Baseboard front 20t Baseboard top

Claims (6)

A foamed resin body, and a non-foamed resin coating layer that covers at least a part of the surface of the body,
The main body and the coating layer are integrally molded,
Long and flexible,
A skirting board that is less than 15 cm high. The baseboard according to claim 1, having a 100% modulus of 5 to 20 MPa. The baseboard according to claim 1 or 2, wherein the coating layer has a Duro hardness A of 50 to 80. The skirting board according to any one of claims 1 to 3, wherein a bottom surface facing the floor when installed is closer to the top surface from the front surface toward the back surface. The baseboard according to any one of claims 1 to 4, which is a coextrusion molded article. A skirting board winding body obtained by winding the skirting board according to any one of claims 1 to 5.

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