JP2010174490A

JP2010174490A - Floor material

Info

Publication number: JP2010174490A
Application number: JP2009017473A
Authority: JP
Inventors: Shoichiro Matsumura; 彰一郎松村; Hiroaki Hashimoto; 浩晃橋本
Original assignee: Toli Corp
Current assignee: Toli Corp
Priority date: 2009-01-29
Filing date: 2009-01-29
Publication date: 2010-08-12
Anticipated expiration: 2029-01-29
Also published as: JP5420919B2

Abstract

<P>PROBLEM TO BE SOLVED: To provide a floor material which has a surface pattern generated with protrusions formed on a surface of a base material, and which makes the pattern visible/invisible depending on a user's viewing position. <P>SOLUTION: This flooring material 1 is characterized as follows: a plurality of protrusions 3, which are provided on the surface of the base material, include first and second protrusions 3a and 3b which are formed like dots in a plan view; the first and second protrusions 3a and 3b are different in shape from each other; and the area or shape of a shadow formed by the first protrusion 3a is different from that of a shadow formed by the second protrusion 3b, when the light is casted at a predetermined angle to the surface of the base material. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、表面に複数の凸部が設けられた床材に関する。 The present invention relates to a flooring provided with a plurality of convex portions on the surface.

床材は、住宅等の建造物の床面に敷設されている。該床材は、主として基材を有し、必要に応じて、化粧層、裏打ち層、その他の機能層などを有する。また、該基材の表面に、エンボス加工等を施すことによって複数の凸部を形成した床材も知られている。
一般的に、エンボス加工等によって形成される凸部は、基材に積層された化粧層等の模様に立体感を付与し、意匠性を向上させることができる。 The flooring material is laid on the floor of a building such as a house. The flooring mainly has a base material and, if necessary, has a decorative layer, a backing layer, other functional layers, and the like. Also known is a flooring in which a plurality of convex portions are formed by embossing or the like on the surface of the base material.
Generally, the convex part formed by embossing etc. can give a three-dimensional effect to patterns, such as a decorative layer laminated | stacked on the base material, and can improve the designability.

例えば、特許文献１に記載の床材は、エンボス加工により凸部が形成された基材の表面に、カーペット模様の印刷層又は化粧層が積層されている。該床材は、植設パイルを模した模様印刷と凸部とが同調することで、カーペットに類似した外観を呈する。
また、該床材は、植設パイルの頂部に該当する部分を明部に、その周辺部を相対的に暗部にした陰影模様を印刷してなる透明シート等を積層することでより多彩な色彩、模様、質感を表すことができる。 For example, in the flooring described in Patent Document 1, a carpet-patterned printing layer or a decorative layer is laminated on the surface of a base material on which convex portions are formed by embossing. The flooring exhibits an appearance similar to that of a carpet by synchronizing the pattern printing imitating a planting pile and the convex portion.
In addition, the flooring has a variety of colors by laminating a transparent sheet or the like on which a shade pattern is printed with the portion corresponding to the top of the planting pile as a bright portion and the peripheral portion as a relatively dark portion. Can represent patterns, textures.

特開平７−１０９８１８号公報JP-A-7-109818

しかしながら、特許文献１の床材の模様は、凸部と陰影模様を印刷した透明シートとによって立体感を生じさせるが、その模様は床材をどの方向から見ても略変化せず一定の模様として見える。これは、床材の外観をより本物の素材に近づけるという点では好ましいが、意匠的には平凡な印象を与えかねない。また、模様はあくまで印刷層等によって印刷された色相によって表されているため、凸部のみでは床材に模様を呈することができず、単色での模様表現ができないという問題もある。 However, the pattern of the flooring of Patent Document 1 causes a three-dimensional effect by the convex portion and the transparent sheet on which the shading pattern is printed. However, the pattern does not substantially change when the flooring is viewed from any direction. Looks as. This is preferable in terms of bringing the appearance of the floor material closer to a real material, but it may give a mediocre impression in terms of design. In addition, since the pattern is represented only by the hue printed by the printing layer or the like, there is a problem that the pattern cannot be expressed on the floor material only by the convex portion, and the pattern cannot be expressed in a single color.

本発明の目的は、基材の表面に凸部が形成された床材であって、該凸部によって表面に模様が生じ、且つ使用者（歩行者など）の見る位置によってその模様が見え隠れする床材を提供することである。 An object of the present invention is a flooring in which a convex portion is formed on the surface of a base material, and a pattern is generated on the surface by the convex portion, and the pattern is visible and hidden depending on a position viewed by a user (pedestrian or the like). Is to provide flooring.

本発明の床材は、基材表面に、複数の凸部が設けられており、前記複数の凸部が、平面視ドット状の第１突起部及び第２突起部を含み、前記第１突起部及び第２突起部の形状がそれぞれ異なっており、前記基材表面に対して所定角度で光を当てたときに、前記第１突起部によって生じる影の面積又は形状が、前記第２突起部によって生じる影の面積又は形状と異なっている。 The flooring of the present invention is provided with a plurality of protrusions on the surface of the base material, and the plurality of protrusions include a first protrusion and a second protrusion that are dot-like in plan view, and the first protrusion The shape of the projection and the second projection are different from each other, and the area or shape of the shadow produced by the first projection when the light is applied to the substrate surface at a predetermined angle is the second projection. Is different from the area or shape of the shadow caused by.

本発明の好ましい床材は、前記凸部が、基材表面の全体に設けられている。 As for the preferable flooring material of this invention, the said convex part is provided in the whole base-material surface.

本発明の好ましい床材は、前記第１突起部又は第２突起部の何れか一方の上面が、平坦部を有し、他方の上面が、弧面部を有する。 In a preferred flooring material of the present invention, the upper surface of one of the first protruding portion and the second protruding portion has a flat portion, and the other upper surface has an arc surface portion.

本発明の他の好ましい床材は、前記第１突起部又は前記第２突起部の何れか一方の上面の面積が、他方の上面の面積よりも広い。 In another preferable floor material of the present invention, the area of the upper surface of either the first protrusion or the second protrusion is wider than the area of the other upper surface.

本発明の他の好ましい床材は、前記第１突起部又は第２突起部の何れか一方の基材表面からの突出高が、他方の基材表面からの突出高よりも高い。 In another preferred floor material of the present invention, the protruding height from the surface of one of the first protrusion and the second protrusion is higher than the protruding height from the other substrate surface.

本発明の他の好ましい床材は、前記基材表面において、前記第１突起部及び第２突起部の少なくとも何れか一方の複数が近接するように配設された密集領域が、基材表面上に複数箇所設けられている。 In another preferred flooring of the present invention, on the surface of the base material, a dense region disposed so that at least one of the first protrusion and the second protrusion is close to each other is on the surface of the base. Are provided at a plurality of locations.

本発明の床材は、凸部によって基材表面に模様が生じ、且つ使用者の見る位置によってその模様が見え隠れする。
よって、本発明によれば、使用者の見る位置によって模様が変化し、意外性に富んだ床材を提供できる。 In the flooring of the present invention, a pattern is generated on the surface of the base material by the convex portion, and the pattern is visible and hidden depending on the position viewed by the user.
Therefore, according to this invention, a pattern changes with the position which a user sees, and the flooring material which was rich in the unexpectedness can be provided.

１つの実施形態に係る床材の平面図。The top view of the flooring which concerns on one embodiment. 図１のＩＩ−ＩＩ線における縦断面図。ただし、中央部を省略している。The longitudinal cross-sectional view in the II-II line | wire of FIG. However, the central part is omitted. 様々な形態の突起部を示す縦断面図。The longitudinal cross-sectional view which shows the projection part of various forms. 様々な形態の密集領域を示す平面図。The top view which shows the dense area | region of various forms. 実施例の床材の観察方法を示す参考図。The reference figure which shows the observation method of the flooring of an Example.

本発明の床材は、基材表面に、複数の凸部が設けられている。該複数の凸部は、平面視ドット状の突起部を含む。該突起部は、第１突起部及び第２突起部を含み、該第１突起部及び第２突起部の形状がそれぞれ異なっている。基材表面に対して所定角度（例えば、基材表面に対して４５度の方向）で光を当てたときに、該第１突起部によって基材表面に生じる影の面積又は形状が、該第２突起部によって基材表面に生じる影の面積又は形状と異なっている。 The flooring of the present invention is provided with a plurality of convex portions on the surface of the base material. The plurality of protrusions include dot-like protrusions in plan view. The protrusion includes a first protrusion and a second protrusion, and the shapes of the first protrusion and the second protrusion are different from each other. When light is applied to the substrate surface at a predetermined angle (for example, a direction of 45 degrees with respect to the substrate surface), the area or shape of the shadow generated on the substrate surface by the first protrusion is It differs from the area or shape of the shadow produced on the substrate surface by the two protrusions.

本明細書において「第１」及び「第２」とは、形状等の異なる構成部分を区別するために便宜上用いるものであり、それらの優劣や順序を意味するわけではない。
本明細書において、「平面視ドット状の突起部（第１突起部及び第２突起部など）」とは、基材表面に対して鉛直方向から見た際に、点状に見える凸部を意味する。また、この点状は、特に限定されず、例えば、平面視円形状、平面視楕円形状、平面視正方形状、平面視長方形状、平面視六角形状、平面視星形状等が挙げられる。 In the present specification, “first” and “second” are used for convenience in order to distinguish different constituent parts such as shapes, and do not mean their superiority or inferiority.
In this specification, the “dot-like projections (first projection and second projection)” in plan view are convex portions that appear as dots when viewed from the vertical direction with respect to the substrate surface. means. Moreover, this point shape is not specifically limited, For example, planar view circular shape, planar view elliptical shape, planar view square shape, planar view rectangular shape, planar view hexagonal shape, planar view star shape, etc. are mentioned.

図１は、床材の一部省略平面図を示し、図２は、その一部断面図を示す。なお、実際の床材及び凸部の寸法は、各図に示した寸法と異なっていることに留意されたい。
図１及び図２において、床材１は、基材２と、該基材２の表面２ａに複数突設された凸部３と、該基材２の裏面に設けられた裏打ち層４と、を有する。ただし、本発明の床材１の層構成は、これに限られず、さらに他の層が設けられた複層構造であってもよいし、或いは、単層構造であってもよい。
床材１は、図１に示すように、平面視正方形状（又は長方形状）に裁断された、定形タイプのタイルでもよいし、所定幅で長尺状のシートタイプであってもよい。シートタイプの床材は、通常、ロール状に巻き取られて保管・流通に供される。 FIG. 1 shows a partially omitted plan view of a flooring, and FIG. 2 shows a partial cross-sectional view thereof. It should be noted that the actual dimensions of the flooring and the convex portion are different from the dimensions shown in the drawings.
1 and 2, the flooring 1 includes a base material 2, a plurality of protrusions 3 provided on the surface 2 a of the base material 2, a backing layer 4 provided on the back surface of the base material 2, and Have However, the layer structure of the flooring 1 of the present invention is not limited to this, and may be a multilayer structure in which other layers are provided, or may be a single layer structure.
As shown in FIG. 1, the flooring 1 may be a regular type tile cut into a square shape (or a rectangular shape) in plan view, or may be a long sheet type having a predetermined width. Sheet-type flooring materials are usually wound up in a roll shape for storage and distribution.

基材２は、特に限定されず、従来の床材に使用されているものを用いることができる。例えば、基材２は、合成樹脂、エラストマー、ゴム、木などをシート状に加工したものを用いることができる。凸部３を容易に形成できることから、基材２は、合成樹脂、エラストマー又はゴムを用いることが好ましい。
合成樹脂としては、ポリ塩化ビニル、ポリエチレン、ポリアミド、ポリスチレン、ポリエステルなどの熱可塑性樹脂等が挙げられ、好ましくはポリ塩化ビニルである。エラストマーとしては、エチレン−αオレフィンなどのオレフィン系エラストマー等が挙げられ、ゴムとしては、天然ゴム、合成ゴム等が挙げられる。
裏打ち層４は、必要に応じて設けられる。裏打ち層４としては、織布、不織布、ゴム層などが挙げられる。 The base material 2 is not specifically limited, What is used for the conventional flooring material can be used. For example, the base material 2 can use what processed synthetic resin, elastomer, rubber | gum, wood, etc. into the sheet form. Since the convex part 3 can be formed easily, it is preferable that the base material 2 uses a synthetic resin, an elastomer, or rubber | gum.
Examples of the synthetic resin include thermoplastic resins such as polyvinyl chloride, polyethylene, polyamide, polystyrene, and polyester, and preferably polyvinyl chloride. Examples of the elastomer include olefin-based elastomers such as ethylene-α olefin, and examples of the rubber include natural rubber and synthetic rubber.
The backing layer 4 is provided as necessary. Examples of the backing layer 4 include a woven fabric, a nonwoven fabric, and a rubber layer.

複数の凸部３は、基材２の幅方向及び縦方向（縦方向とは、基材２の表面において、前記幅方向に直交する方向）に間隔をあけて並設されている。
上記凸部３は、基材２の表面から突出した部分である。凸部３の形成方法は、メカニカルエンボス加工又はケミカルエンボス加工などが挙げられる。 The plurality of convex portions 3 are juxtaposed in the width direction and the vertical direction of the base material 2 (the vertical direction is a direction perpendicular to the width direction on the surface of the base material 2).
The convex portion 3 is a portion protruding from the surface of the substrate 2. Examples of the method for forming the protrusion 3 include mechanical embossing or chemical embossing.

上記凸部３は、平面視ドット状の突起部を含み、該突起部は、形状の異なる平面視ドット状の第１突起部３ａ及び第２突起部３ｂを含んでいる。
平面視ドット状の突起部（凸部３）は、基材表面の略全体に設けられている。かかる凸部３が基材表面の全体に形成された床材１は、足裏が滑り難いので好ましい。
第１突起部３ａ及び第２突起部３ｂの点状は、特に限定されず、例えば、平面視円形状、平面視楕円形状などの平面視略円形状；平面視正方形状、平面視長方形状、平面視菱形状などの平面視四角形状；平面視六角形状などの平面視多角形状；平面視三角形状；平面視星形状等が挙げられる。平面視略円形状としては、例えば、直径０．５ｍｍ〜２０ｍｍ、好ましくは直径１ｍｍ〜１０ｍｍ程度の円形状が挙げられる。平面視四角形状としては、例えば、縦横０．５ｍｍ〜２０ｍｍ、好ましくは縦横１ｍｍ〜１０ｍｍ程度の四角形状が挙げられる。 The convex part 3 includes a dot-like projection part in a plan view, and the projection part includes a first projection part 3 a and a second projection part 3 b in a plan-view dot form having different shapes.
The projection (projection 3) having a dot shape in plan view is provided on substantially the entire surface of the substrate. The flooring 1 in which the convex portions 3 are formed on the entire surface of the base material is preferable because the soles are difficult to slip.
The point shapes of the first protrusion 3a and the second protrusion 3b are not particularly limited, and are, for example, a substantially circular shape in plan view such as a circular shape in plan view and an elliptical shape in plan view; a square shape in plan view, a rectangular shape in plan view, Examples include a rectangular shape in plan view such as a rhombus shape in plan view; a polygonal shape in plan view such as a hexagonal shape in plan view; a triangular shape in plan view; and a star shape in plan view. Examples of the substantially circular shape in plan view include a circular shape having a diameter of 0.5 mm to 20 mm, preferably a diameter of about 1 mm to 10 mm. Examples of the rectangular shape in plan view include a rectangular shape having a length and width of 0.5 mm to 20 mm, preferably about 1 mm to 10 mm.

第１突起部３ａ及び第２突起部３ｂの平面視形状は、同じでもよいし、或いは、異なっていてもよい。
平面視形状が同じで、且つ形状の異なる第１突起部３ａ及び第２突起部３ｂとしては、両突起部３ａ，３ｂの平面視形状が同じ（例えば、平面視略円形状）であるが、その上面の面積が異なっている場合（相似形）、その突出高が異なっている場合、その上面の形状が異なっている場合などが挙げられる。
また、平面視形状の異なる両突起部３ａ，３ｂとしては、例えば、第１突起部３ａが平面視略円形状に形成され、第２突起部３ｂが平面視四角形状に形成されている場合などが挙げられる。 The planar view shapes of the first protrusion 3a and the second protrusion 3b may be the same or different.
As the first protrusion 3a and the second protrusion 3b having the same planar view shape and different shapes, the two protrusions 3a and 3b have the same planar view shape (for example, a substantially circular shape in plan view) The case where the area of the upper surface is different (similar shape), the case where the protruding height is different, the case where the shape of the upper surface is different, and the like can be mentioned.
Moreover, as both the projection parts 3a and 3b from which planar shape differs, for example, the 1st projection part 3a is formed in planar view substantially circular shape, and the 2nd projection part 3b is formed in planar view square shape etc. Is mentioned.

１つの実施形態では、第１突起部３ａと第２突起部３ｂとは、その横断面形状又は縦断面形状の少なくとも何れか一方の形状が異なっている。両突起部３ａ，３ｂの横断面形状が異なるとは、例えば、両者の平面視形状が異なる場合などが該当する。また、両突起部３ａ，３ｂの縦断面形状が異なるとは、例えば、両者の突出高が異なる場合や両者の上面形状が異なる場合などが該当する。 In one embodiment, the 1st projection part 3a and the 2nd projection part 3b differ in the shape of at least any one of the cross-sectional shape or the longitudinal cross-sectional shape. The case where the cross-sectional shapes of the protrusions 3a and 3b are different corresponds to, for example, a case where the shapes of the two planar views are different. Moreover, the case where both the protrusion parts 3a and 3b differ in the longitudinal cross-sectional shape corresponds, for example, when both projecting heights differ or when both upper surface shapes differ.

両突起部３ａ，３ｂは、横断面形状又は縦断面形状の少なくとも何れか一方が異なるため、基材表面に対して所定角度（基材表面に対して鋭角）で光を当てたときに、両突起部３ａ，３ｂに対応して、面積又は形状が異なる２種類以上の影が、基材表面に生じる。さらに、突起部３ａ，３ｂの側面（立ち上がり周壁面）のうち、光が当たっていない部分が暗く見える。この側面の暗い部分は、前記影と一体的に暗く見えるので、以下、側面の暗い部分と突起部に起因する影を区別せずに総称する場合には、「陰影」という。例えば、上面の面積が広い及び／又は突出高の高い突起部に起因する陰影は大きく、上面の面積が狭い及び／又は突出高の低い突起部に起因する陰影は、前記突起部に起因する陰影よりも、小さくなる。このため、上面の面積が広い及び／又は突出高の高い突起部が密集して設けられた領域は、相対的に暗く見える。
また、上面の形状が異なる両突起部３ａ，３ｂ間にコントラストが生じ、相対的に明るい部分と暗い部分が生じる。 Since both the projecting portions 3a and 3b are different in at least one of the cross-sectional shape and the vertical cross-sectional shape, both of the protrusions 3a and 3b are exposed to light at a predetermined angle (acute angle with respect to the substrate surface) with respect to the substrate surface. Corresponding to the protrusions 3a and 3b, two or more types of shadows having different areas or shapes are generated on the substrate surface. Furthermore, of the side surfaces (rising peripheral wall surfaces) of the protrusions 3a and 3b, the portions that are not exposed to light appear dark. Since the dark part on the side surface looks dark integrally with the shadow, hereinafter, the dark part on the side surface and the shadow caused by the protrusion are collectively referred to as “shadow”. For example, a shadow due to a protrusion having a large upper surface area and / or a high protrusion height is large, and a shadow attributed to a protrusion having a small upper surface area and / or a low protrusion height is a shadow attributed to the protrusion. Smaller than. For this reason, the area | region where the area of the upper surface was large and / or the protrusion part with high protrusion height was provided densely looks relatively dark.
Further, a contrast is generated between the protrusions 3a and 3b having different shapes on the upper surface, and a relatively bright part and a dark part are generated.

かかる陰影とコントラストによって、基材表面上に模様が見え、かかる陰影とコントラストは、使用者の見る位置によって変化するため、使用者が床材表面を見る位置によって、その模様が見え隠れするという効果を奏する。
ところで、基材表面の一部の領域に複数の凸部を形成した場合には、該一部の領域の凸部に起因する陰影と基材表面の光沢との明暗差によって模様が見え、又、見る位置によってその模様が見えなくなる。しかしながら、このような床材は、使用者に意外性を与えず（一部の領域に凸部が設けられ且つその周りに平坦状の基材表面が広がっていると、それを見た使用者は、凸部に起因して模様が見えることを予測する）、さらに、凸部が設けられていない領域で足が滑るおそれがある。
本発明の床材１は、基材表面の略全体に凸部３を設けて歩行時の滑りを防止しつつ、全体的に凸部３が設けられていながらも模様が見え隠れするという意外性を使用者に与えることができる。
以下、突起部の形状、その配設パターンなどについて詳述する。 A pattern appears on the surface of the substrate due to the shadow and contrast, and the shadow and contrast change depending on the position where the user sees, so the effect that the pattern appears and disappears depending on the position where the user looks at the surface of the flooring. Play.
By the way, when a plurality of convex portions are formed in a partial area of the substrate surface, a pattern can be seen due to the difference in brightness between the shadow caused by the convex portions of the partial area and the gloss of the substrate surface. Depending on the viewing position, the pattern disappears. However, such a flooring does not give unexpectedness to the user (if a convex part is provided in a part of the area and a flat substrate surface is spread around the user, the user who has seen it is seen. Predicts that the pattern can be seen due to the convex part), and there is a possibility that the foot slips in an area where the convex part is not provided.
The flooring 1 of the present invention has the surprising feature that the pattern is visible and hidden while the convex part 3 is provided as a whole while the convex part 3 is provided on substantially the entire surface of the base material to prevent slipping during walking. Can be given to the user.
Hereinafter, the shape of the protrusion, the arrangement pattern thereof, and the like will be described in detail.

（突起部の形状）
凸部３は、２種以上の異なる形状の突起部（第１突起部３ａ及び第２突起部３ｂなど）を含んでいれば特に限定されず、任意の形状とすることができる。
例えば、上述のように、両突起部３ａ，３ｂの平面視形状が異なっていたり、第１突起部３ａの上面の形状と第２突起部３ｂの上面の形状が異なっていたり、両突起部３ａ，３ｂの上面の面積が異なっていたり、両突起部３ａ，３ｂの突出高が異なっている場合などが挙げられる。 (Shape of protrusion)
The protrusion 3 is not particularly limited as long as it includes two or more types of protrusions having different shapes (such as the first protrusion 3a and the second protrusion 3b), and can have any shape.
For example, as described above, both the projections 3a and 3b have different planar shapes, the top surface of the first projection 3a and the top surface of the second projection 3b are different, or both the projections 3a. , 3b have different top surface areas, or the protrusions 3a, 3b have different protrusion heights.

１つの実施形態では、第１突起部３ａ又は第２突起部３ｂの何れか一方の上面が、平坦部を有し、他方の上面が、弧面部を有する。
このように第１突起部３ａと第２突起部３ｂの上面の形状が異なることにより、両突起部３ａ，３ｂ間に高いコントラストが生じ得る。具体的には、例えば、第１突起部３ａの上面が平坦状に形成されている場合、この平坦状の上面に当たった光は一定方向に反射され、所定位置から使用者が見た場合に、この上面が明るく見える。他方、第２突起部３ｂの上面が弧面状に形成されている場合、この弧面状の上面に当たった光は弧に沿って様々な方向に反射されるので、前記所定位置から使用者が見た場合に、この上面が相対的に暗く見える。
よって、両突起部３ａ，３ｂ間に高いコントラストが生じ得る。 In one embodiment, the upper surface of one of the first protrusion 3a or the second protrusion 3b has a flat portion, and the other upper surface has an arc surface.
As described above, the first protrusion 3a and the second protrusion 3b are different in shape on the upper surface, so that a high contrast can be generated between the protrusions 3a and 3b. Specifically, for example, when the upper surface of the first protrusion 3a is formed in a flat shape, the light that hits the flat upper surface is reflected in a certain direction and is viewed by the user from a predetermined position. This upper surface looks bright. On the other hand, when the upper surface of the second protrusion 3b is formed in an arc surface shape, light hitting the arc surface upper surface is reflected in various directions along the arc. When viewed, this top surface appears relatively dark.
Therefore, a high contrast can be generated between the protrusions 3a and 3b.

使用者が見る位置（見る角度）を変えるに従い、第１突起部３ａの上面からの反射光が目に入らなくなっていく一方で、第２突起部３ｂの上面からの反射光は目に入っているので、コントラストが低下していく。
このように使用者の見る位置によってコントラストが変化するため、このコントラストと上記陰影が相乗して、模様が見え隠れする。
なお、第２突起部３ｂの上面が平坦部を有し、且つ、第１突起部３ａの上面が弧面部を有していてもよい。 As the user changes the viewing position (viewing angle), the reflected light from the upper surface of the first protrusion 3a stops entering the eye, while the reflected light from the upper surface of the second protrusion 3b enters the eye. As a result, the contrast decreases.
Since the contrast changes depending on the position viewed by the user in this way, the contrast and the above-mentioned shadow are combined to make the pattern appear and disappear.
In addition, the upper surface of the 2nd projection part 3b may have a flat part, and the upper surface of the 1st projection part 3a may have an arc surface part.

上面が平坦部を有する突起部は、図３（ａ）に示すように、上面全体が平坦状に形成されていてもよく、図３（ｂ）及び（ｃ）に示すように、上面の中央部分が平坦状に形成されていてもよい。上面の中央部分が平坦状に形成されている場合、突起部の突出外周縁（上面の外縁）が、図３（ｃ）に示すように、弧状に角取りされていることが好ましい。このように角取りされていると、床材の使用によって粉塵などが付着したときに、これを除去し易くなる。従って、簡易に清掃でき、それによって突起部の黒ずみ防止して、突起部間のコントラストを高く維持できる。
上面が平坦部を有する突起部は、その上面全体が平坦状に形成されていることが好ましい。上面全体が平坦状に形成されていれば、光を一定方向に反射する面積が広くなり、突起部３ａ，３ｂ間のコントラストを高めることができる。 As shown in FIG. 3 (a), the entire upper surface of the protrusion having a flat portion on the upper surface may be formed flat, as shown in FIGS. 3 (b) and 3 (c). The part may be formed flat. When the central portion of the upper surface is formed in a flat shape, it is preferable that the protruding outer peripheral edge (outer edge of the upper surface) of the protrusion is rounded in an arc shape as shown in FIG. When the corners are chamfered in this way, it becomes easy to remove dust or the like when the floor material is used. Therefore, it can be easily cleaned, thereby preventing darkening of the protrusions and maintaining a high contrast between the protrusions.
It is preferable that the entire upper surface of the protruding portion having a flat upper surface is flat. If the entire upper surface is formed in a flat shape, the area for reflecting light in a certain direction is increased, and the contrast between the protrusions 3a and 3b can be increased.

また、上面が弧面部を有する突起部は、図３（ｄ）に示すように、上面全体が外側（上側）へ膨らんだ弧面状に形成されていてもよく、図３（ｅ）に示すように、上面全体が内側（下側）へ陥入する弧面状に形成されていてもよく、図３（ｆ）に示すように、上面の中央部分が内側へ陥入する弧面状に形成されていてもよい。
上面が弧面部を有する突起部は、上面全体が外側へ膨らんだ弧面状に形成されていることが好ましい。上面全体が弧面状に形成されていれば、光を様々な方向に反射し易く、且つ、床材の使用によって、粉塵などが溜まり難い。 Further, as shown in FIG. 3D, the protrusion having the arc surface portion on the upper surface may be formed in an arc surface shape in which the entire upper surface swells outward (upward), as shown in FIG. As shown in FIG. 3 (f), the entire upper surface may be formed in an arcuate shape that is recessed inwardly, as shown in FIG. 3 (f). It may be formed.
It is preferable that the protrusion having the arc surface portion on the upper surface is formed in an arc surface shape in which the entire upper surface bulges outward. If the entire upper surface is formed in an arcuate shape, light is easily reflected in various directions, and dust and the like are less likely to accumulate due to the use of flooring.

さらに、上面が平坦部を有する突起部は、図３（ｇ）又は（ｈ）に示すように、その基部（基材表面から立ち上がる、突起部と基材の境界部）が、断面曲線状又は断面傾斜状に形成されていることが好ましい。同様に、上面が弧面部を有する突起部は、その基部が、曲線状又は傾斜状に形成されていることが好ましい（図示せず）。このように突起部の基部が断面曲線状又は断面傾斜状に形成されていると、床材の使用によって粉塵などが付着したときに、これを除去し易くなる。従って、簡易に清掃でき、それによって突起部の黒ずみ防止して、突起部間のコントラストを高く維持できる。 Further, as shown in FIG. 3 (g) or (h), the protrusion having a flat upper surface has a base portion (boundary portion of the protrusion and the substrate rising from the surface of the substrate) having a curved cross-section or It is preferable that the cross section is formed in an inclined shape. Similarly, it is preferable that the base portion of the projection portion having the arc surface portion on the upper surface is formed in a curved shape or an inclined shape (not shown). Thus, when the base part of a projection part is formed in the cross-sectional curve shape or the cross-sectional inclination shape, when dust etc. adhere by use of a flooring, this will become easy to remove. Therefore, it can be easily cleaned, thereby preventing darkening of the protrusions and maintaining a high contrast between the protrusions.

両突起部３ａ，３ｂの上面の面積は、特に限定されず、任意に設定することができる。
面積を異ならせて陰影の違いを出す場合には、好ましくは、第１突起部３ａ又は第２突起部３ｂの何れか一方の上面の面積が、他方の上面の面積よりも広く形成され、より好ましくは、何れか一方の上面の面積が他方の上面の面積よりも１．１倍〜１０倍広く形成され、特に好ましくは、１．２倍〜５倍広く形成される。例えば、第１突起部３ａの上面の面積が、第２突起部３ｂの上面の面積よりも広く形成される。上面の面積が広い突起部は、上面の面積がそれより狭い突起部に比して、横断面形状が大きくなる。このため、上面の面積が広い突起部に起因する陰影が大きくなる。このため、上面の面積が広い突起部が密集して設けられた領域は、相対的に暗く見える。 The area of the upper surface of both protrusions 3a and 3b is not particularly limited and can be set arbitrarily.
In the case where a difference in shadow is produced by varying the area, preferably, the area of the upper surface of either the first protrusion 3a or the second protrusion 3b is formed wider than the area of the other upper surface, Preferably, the area of one upper surface is formed 1.1 times to 10 times wider than the area of the other upper surface, particularly preferably 1.2 times to 5 times wider. For example, the area of the upper surface of the first protrusion 3a is formed wider than the area of the upper surface of the second protrusion 3b. A protrusion having a large upper surface area has a larger cross-sectional shape than a protrusion having a smaller upper surface area. For this reason, the shadow resulting from the protrusion part with a large area of an upper surface becomes large. For this reason, the area where the protrusions having a large area on the upper surface are provided densely appears to be relatively dark.

ここで、突起部の上面の面積とは、基材表面に対して鉛直方向から突起部を見たときの、突起部の上面の外周縁によって形取られる形状の面積をいう。
このように両突起部３ａ，３ｂの上面の面積が異なることにより、突起部３ａ，３ｂの上面によって生じるコントラストが高くなる上、第１突起部３ａによって生じる陰影の面積又は形状と第２突起部３ｂによって生じる陰影の面積又は形状とが、大きく異なるようになる。よって、基材表面に、より鮮明な模様が見える上、使用者の見る位置によって、模様が見え隠れし易くなる。 Here, the area of the upper surface of the protruding portion refers to the area of the shape taken by the outer peripheral edge of the upper surface of the protruding portion when the protruding portion is viewed from the vertical direction with respect to the substrate surface.
Thus, since the areas of the upper surfaces of the protrusions 3a and 3b are different, the contrast generated by the upper surfaces of the protrusions 3a and 3b is increased, and the area or shape of the shadow generated by the first protrusions 3a and the second protrusions are increased. The area or shape of the shadow produced by 3b is greatly different. Therefore, a clearer pattern can be seen on the substrate surface, and the pattern can be easily seen and hidden depending on the position viewed by the user.

なお、両突起部３ａ，３ｂの上面の面積の具体例としては、好ましくは０．２ｍｍ^２〜３００ｍｍ^２であり、より好ましくは０．８ｍｍ^２〜８０ｍｍ^２である。
両突起部３ａ，３ｂの上面の具体的な面積が前記範囲を超える場合、１つの突起部の占める割合が大きくなり過ぎて、複数の突起部の集合による模様が良好に見えないおそれがある。一方、両突起部３ａ，３ｂの上面の具体的な面積が前記範囲を下回る場合、１つの突起部が小さ過ぎて、突起部３ａ，３ｂに起因する陰影が生じ難くなり、陰影に起因した模様自体が見え難くなる。 Incidentally, both the projections 3a, as a specific example of the area of the upper surface of 3b is preferably 0.2 mm ² to 300 mm ^2, more preferably 0.8mm ^² ~80mm ^2.
When the specific area of the upper surface of both the protrusions 3a and 3b exceeds the above range, the ratio of one protrusion is too large, and there is a possibility that the pattern due to the set of the plurality of protrusions cannot be seen well. On the other hand, when the specific area of the upper surface of both the protrusions 3a and 3b is less than the above range, one protrusion is too small to cause a shadow due to the protrusions 3a and 3b, and a pattern due to the shadow. It becomes difficult to see itself.

両突起部３ａ，３ｂの基材表面からの突出高は、特に限定されず、任意に設定することができる。
突出高を異ならせて陰影の違いを出す場合には、第１突起部３ａ又は第２突起部３ｂの何れか一方の突出高が、他方の突起部の突出高よりも高く形成される必要がある。好ましくは、一方の突起部の突出高が、他方の突起部の突出高よりも１．１倍〜３倍の範囲で高く形成され、より好ましくは、１．２倍〜１．５倍高く形成される。両突起部の突出高の差が、余りに小さすぎると、陰影の違いが出にくくなり、一方、余りに大きいと、床材の使用中に、高い突起部が基材表面から脱落するおそれがある。
このように両突起部３ａ，３ｂの突出高が異なることにより、第１突起部３ａによって生じる影の面積又は形状と第２突起部３ｂによって生じる影の面積又は形状とが大きく異なるようになる。このため、突出高の高い突起部に起因する陰影が大きくなるため、突出高の高い突起部が密集して設けられた領域は、相対的に暗く見える。
よって、基材表面に、より鮮明な模様が見える上、使用者の見る位置によって、模様が見え隠れし易くなる。 The protrusion height from the base material surface of both protrusion parts 3a and 3b is not specifically limited, It can set arbitrarily.
In the case where a difference in shadow is produced by changing the protruding height, it is necessary that the protruding height of either the first protruding portion 3a or the second protruding portion 3b is higher than the protruding height of the other protruding portion. is there. Preferably, the protrusion height of one protrusion is formed higher in the range of 1.1 to 3 times, more preferably 1.2 to 1.5 times higher than the protrusion height of the other protrusion. Is done. If the difference in protrusion height between the two protrusions is too small, the difference in shadow is difficult to occur. On the other hand, if the difference is too large, the high protrusion may fall off the surface of the base material during use of the flooring.
As described above, the protrusion heights of the protrusions 3a and 3b are different from each other, so that the shadow area or shape generated by the first protrusion 3a and the shadow area or shape generated by the second protrusion 3b are greatly different. For this reason, since the shadow resulting from the protrusion part with high protrusion height becomes large, the area | region where the protrusion part with high protrusion height was provided densely looks relatively dark.
Therefore, a clearer pattern can be seen on the substrate surface, and the pattern can be easily seen and hidden depending on the position viewed by the user.

なお、両突起部３ａ，３ｂの基材表面からの突出高の具体例としては、好ましくは０．１〜５．０ｍｍであり、より好ましくは０．３〜２．０ｍｍである。
両突起部３ａ，３ｂの具体的な突出高が前記範囲を超える場合、各突起部３ａ，３ｂ間に粉塵等が溜まり易くなる。そのため、突起部３ａ，３ｂに起因する陰影と粉塵付着に起因する黒ずみとの違いが見分け難くなり、見る位置によって陰影が見えなくなっても、使用者が黒ずみを陰影と混同してしまい、模様の見え隠れ効果が生じ難くなる。一方、両突起部３ａ，３ｂの具体的な突出高が前記範囲を下回る場合、突起部３ａ，３ｂに起因する陰影が生じ難くなり、陰影に起因した模様自体が見え難くなる。 In addition, as a specific example of the protrusion height from the base-material surface of both protrusion part 3a, 3b, Preferably it is 0.1-5.0 mm, More preferably, it is 0.3-2.0 mm.
When the specific protrusion height of both the protrusions 3a and 3b exceeds the above range, dust or the like is likely to accumulate between the protrusions 3a and 3b. Therefore, the difference between the shadow caused by the protrusions 3a and 3b and the darkening caused by dust adhesion is difficult to distinguish, and even if the shadow becomes invisible depending on the viewing position, the user confuses the darkening with the shadow. Hidden and hidden effects are less likely to occur. On the other hand, when the specific protrusion heights of both the protrusions 3a and 3b are less than the above range, the shadow due to the protrusions 3a and 3b hardly occurs, and the pattern itself due to the shadow becomes difficult to see.

（突起部の配設パターン）
上記両突起部３ａ，３ｂは、その複数が基材表面上に所定位置に配設されている。
基材表面には、第１突起部３ａ又は第２突起部３ｂの少なくとも一方が複数近接するように配設された密集領域が２箇所以上形成されている。
前記密集領域が基材上の所定箇所に形成されることによって、基材表面に、所望の模様が見える。 (Protrusion pattern)
A plurality of the protrusions 3a and 3b are arranged at predetermined positions on the surface of the base material.
Two or more dense regions are formed on the surface of the base material so that at least one of the first protrusions 3a and the second protrusions 3b is close to each other.
A desired pattern can be seen on the surface of the substrate by forming the dense region at a predetermined location on the substrate.

上記密集領域は、第１突起部３ａ又は第２突起部３ｂの少なくとも何れか一方の突起部が複数近接して配設された、基材表面上の１つの領域である。
１つの密集領域には、第１突起部３ａ又は第２突起部３ｂの何れか一方の突起部が複数含まれていてもよいし、第１突起部３ａ及び第２突起部３ｂの双方の突起部の複数が混在して含まれていてもよい。
好ましくは、ある密集領域は、複数の第１突起部３ａが近接するように配設されており、他の密集領域は、複数の第２突起部３ｂが近接するように配設されている。 The dense region is a region on the surface of the base material in which a plurality of protrusions of at least one of the first protrusion 3a and the second protrusion 3b are disposed in close proximity.
One dense region may include a plurality of projections of either the first projection 3a or the second projection 3b, or the projections of both the first projection 3a and the second projection 3b. A plurality of parts may be included together.
Preferably, a certain dense region is disposed so that the plurality of first protrusions 3a are close to each other, and another dense region is disposed so that the plurality of second protrusions 3b are close to each other.

具体的には、図１に示すように、各突起部は、基材２の幅方向及び縦方向に間隔をあけて並設されている。
以下、基材２の幅方向にあけられた間隔を「幅間隔」といい、同縦方向にあけられた間隔を「縦間隔」という。
なお、本明細書において、前記幅間隔及び縦間隔は、隣り合う突起部の基部外縁間のうち、最も短い部分の距離を意味する。 Specifically, as shown in FIG. 1, the protrusions are arranged side by side in the width direction and the vertical direction of the base material 2.
Hereinafter, the interval opened in the width direction of the substrate 2 is referred to as “width interval”, and the interval opened in the same vertical direction is referred to as “vertical interval”.
In addition, in this specification, the said width | variety space | interval and a vertical space | interval mean the distance of the shortest part among the base outer edges of an adjacent projection part.

前記幅間隔及び縦間隔は、特に限定されないが、好ましくは１ｍｍ〜２０ｍｍであり、より好ましくは２ｍｍ〜７ｍｍである。
前記幅間隔及び縦間隔が余りに長いと、密集領域において、突起部の総面積が基材表面上に占める面積割合が低くなり（突起部の密集度合いが低くなり）、模様が見え難くなる。一方、前記幅間隔及び縦間隔が余りに短いと、１つの突起部に起因した影が隣接する突起部上に重なり、陰影とコントラストによる模様が見え難くなる。この点、突起部の幅間隔及び縦間隔が前記範囲内であれば、良好な陰影とコントラストを生じさせることができる。 Although the said width | variety space | interval and a vertical space | interval are not specifically limited, Preferably they are 1 mm-20 mm, More preferably, they are 2 mm-7 mm.
If the width interval and the vertical interval are too long, the area ratio of the total area of the protrusions on the substrate surface in the dense region is low (the degree of density of the protrusions is low), and the pattern becomes difficult to see. On the other hand, if the width interval and the vertical interval are too short, a shadow caused by one protrusion overlaps on an adjacent protrusion, making it difficult to see a pattern due to shadow and contrast. In this regard, if the width interval and the vertical interval of the protrusions are within the above ranges, good shadow and contrast can be generated.

上記密集領域において、突起部の総面積が基材表面上に占める面積割合は、特に限定されず、適宜設定できる。この面積割合が高いほど、陰影の面積が大きくなるが、余りに高いと、上述のように、突起部の間隔が密になり過ぎて、陰影とコントラストによる模様が見え難くなる。
これらを考慮すると、密集領域における突起部の面積割合は、１０％〜９０％であり、好ましくは３０％〜７０％である。
なお、面積割合（％）＝｛密集領域における突起部の総面積／（密集領域における突起部の総面積＋密集領域において露出した基材表面の総面積）｝×１００、で求められる。
なお、突起部の総面積とは、各突起部の上面の面積の和であり、突起部の上面の面積とは、基材表面に対して鉛直方向から突起部を見たときの、突起部の上面の外周縁によって形取られる形状の面積をいう。 In the dense region, the area ratio of the total area of the protrusions on the substrate surface is not particularly limited and can be set as appropriate. As the area ratio increases, the shadow area increases. However, if the area ratio is too high, the distance between the protrusions becomes too close as described above, making it difficult to see the pattern due to the shadow and contrast.
Considering these, the area ratio of the protrusions in the dense region is 10% to 90%, preferably 30% to 70%.
The area ratio (%) = {total area of protrusions in the dense area / (total area of protrusions in the dense area + total area of the substrate surface exposed in the dense area)} × 100.
The total area of the protrusions is the sum of the areas of the upper surfaces of the protrusions, and the area of the upper surface of the protrusions refers to the protrusions when the protrusions are viewed from the vertical direction with respect to the substrate surface. The area of the shape taken by the outer peripheral edge of the upper surface of.

基材表面には、上記密集領域が複数箇所形成されているが、各密集領域の配設パターンは、特に限定されない。
例えば、図４（ａ）に示すように、基材表面に、第１突起部３ａが密集して配設された密集領域（以下、第１密集領域５ａという）と、第２突起部３ｂが密集して配設された密集領域（以下、第２密集領域５ｂという）とが、交互に帯状に形成されていてもよい。
この第１突起部３ａが、第２突起部３ｂに比して、その面積が広い及び／又は突出高が高い場合には、使用者の見る位置によって、第１密集領域５ａが第２密集領域５ｂに比して相対的に暗く見え、床材の表面にストライプ状の模様が見える。他方、使用者の見る位置を、基材表面に対して鉛直方向に近づけていくと、第１密集領域５ａと第２密集領域５ｂの明暗差が消失して、床材の表面から模様が見えなくなる。 A plurality of the dense areas are formed on the surface of the base material, but the arrangement pattern of the dense areas is not particularly limited.
For example, as shown in FIG. 4A, a dense region (hereinafter referred to as a first dense region 5a) in which the first protrusions 3a are densely arranged on the surface of the base material, and a second protrusion 3b. The densely arranged dense areas (hereinafter referred to as second dense areas 5b) may be alternately formed in a band shape.
When the area of the first protrusion 3a is larger and / or the protrusion height is higher than that of the second protrusion 3b, the first dense area 5a may be the second dense area depending on the position viewed by the user. It looks darker than 5b, and a striped pattern appears on the surface of the flooring. On the other hand, when the position viewed by the user is made closer to the vertical direction with respect to the substrate surface, the contrast between the first dense region 5a and the second dense region 5b disappears, and the pattern can be seen from the surface of the flooring. Disappear.

なお、第１突起部３ａ及び第２突起部３ｂの何れか一方の上面が平坦部を有し、且つ、他方が弧面部を有している場合、模様がより一層明確に見える。例えば、第１突起部３ａの上面が弧面部を有し、且つ、第２突起部３ｂの上面が平坦部を有している場合、第１突起部３ａの上面は相対的に暗く見えるので、第２突起部３ｂとの明暗差がより大きくなる。このため、コントラストが高く、模様がより一層明確に見える。
さらに、第１突起部３ａ及び第２突起部３ｂの何れか一方の突起部の上面が平坦部を有し且つこの一方の突起部の突出高及び／又は面積が小さく形成され、何れか他方の突起部の上面が弧面部を有し且つこの他方の突起部の突出高及び／又は面積が大きく形成されている場合には、前記一方の突起部が密集した領域は、より明るく見え、前記他方の突起部が密集した領域は、相対的に、より暗く見える。このため、模様が更に鮮明に見える。 In addition, when either one of the upper surfaces of the first protrusions 3a and the second protrusions 3b has a flat portion and the other has an arc surface portion, the pattern can be seen more clearly. For example, when the upper surface of the first protrusion 3a has an arc surface and the upper surface of the second protrusion 3b has a flat portion, the upper surface of the first protrusion 3a looks relatively dark. The difference in brightness from the second protrusion 3b becomes larger. For this reason, the contrast is high and the pattern looks even clearer.
Furthermore, the upper surface of any one of the first protrusion 3a and the second protrusion 3b has a flat portion, and the protrusion height and / or area of the one protrusion is small. In the case where the upper surface of the protrusion has an arc surface and the protrusion height and / or area of the other protrusion is large, the area where the one protrusion is concentrated appears brighter and the other The region where the protrusions of the two regions are densely appears darker. For this reason, the pattern looks clearer.

また、図４（ｂ）に示すように、矩形状の第１密集領域５ａが第２密集領域５ｂで囲繞されるように、両密集領域５ａ，５ｂが基材表面上に形成されていてもよい。この場合、使用者の見る位置によって、第１密集領域５ａが相対的に暗く見え、床材の表面に四角形状の模様が見える。また、見る位置を変えると、前記模様が見えなくなる。
さらに、図４（ｃ）に示すように、第１密集領域５ａが基材表面上に平面視ドーナツ状に形成され、該第１密集領域５ａの内外領域に第２密集領域５ｂが形成されていてもよい。この場合、使用者の見る位置によって、第１密集領域５ａが相対的に暗く見え、床材の表面にドーナツ状の模様が見える。
なお、密集領域は、上記のように第１密集領域５ａ及び第２密集領域５ｂの２種類からなる場合に限られず、例えば、図４（ｄ）に表すように、第１密集領域５ａと、第２密集領域５ｂと、第１突起部３ａ及び第２突起部３ｂとは異なる突起部が密集して配設された第３の密集領域５ｃとが、所定パターン（例えば、順に帯状）に形成されていてもよい。
なお、図４において、第１密集領域を網掛けで表し、第２密集領域を薄墨塗りで表し、第３の密集領域を白地で表している。
その他、密集領域をポイント的に配置しても使用者に強い印象を与えることができる。 Further, as shown in FIG. 4B, even if both dense regions 5a and 5b are formed on the surface of the base material such that the rectangular first dense region 5a is surrounded by the second dense region 5b. Good. In this case, the first dense area 5a appears relatively dark depending on the position viewed by the user, and a square pattern is visible on the surface of the flooring. Also, if the viewing position is changed, the pattern becomes invisible.
Further, as shown in FIG. 4C, the first dense region 5a is formed in a donut shape in plan view on the surface of the base material, and the second dense region 5b is formed in the inner and outer regions of the first dense region 5a. May be. In this case, the first dense area 5a appears relatively dark depending on the position viewed by the user, and a donut-shaped pattern is visible on the surface of the flooring.
Note that the dense region is not limited to the two types of the first dense region 5a and the second dense region 5b as described above. For example, as illustrated in FIG. The second dense region 5b and the third dense region 5c in which projections different from the first projection 3a and the second projection 3b are densely formed are formed in a predetermined pattern (for example, a band shape in order). May be.
In FIG. 4, the first dense area is shaded, the second dense area is lightly painted, and the third dense area is white.
In addition, a strong impression can be given to the user even if the dense area is arranged in a point manner.

上記第１密集領域５ａ及び第２密集領域５ｂにおいて、第１突起部３ａ及び第２突起部３ｂの面積割合は、上記範囲から適宜設定される。
第１突起部３ａ及び第２突起部３ｂの面積割合は、ほぼ同じでもよいし、何れか一方が大きくてもよい。なお、この面積割合は、上記式に基づいて求められる。
好ましくは、第１密集領域５ａにおける第１突起部３ａの面積割合が、第２密集領域５ｂにおける第２突起部３ｂの面積割合よりも、１．１倍以上大きく形成され、より好ましくは１．５倍以上大きく形成される。一方、その上限は特に規定できないが、一般的には、１０倍以下である。
両密集領域５ａ，５ｂの突起部の面積割合が前記範囲であれば、両密集領域５ａ，５ｂ間の明暗差が大きくなり、より鮮明な模様が見え得る。 In the first dense region 5a and the second dense region 5b, the area ratio of the first protruding portion 3a and the second protruding portion 3b is appropriately set from the above range.
The area ratio of the first protrusion 3a and the second protrusion 3b may be substantially the same, or one of them may be large. In addition, this area ratio is calculated | required based on the said formula.
Preferably, the area ratio of the first protrusions 3a in the first dense region 5a is 1.1 times or more larger than the area ratio of the second protrusions 3b in the second dense region 5b. It is formed 5 times larger. On the other hand, the upper limit is not particularly specified, but is generally 10 times or less.
If the area ratio of the protrusions of both dense areas 5a and 5b is within the above range, the difference in brightness between the dense areas 5a and 5b becomes large, and a clearer pattern can be seen.

なお、上記実施形態では、凸部３は、形状の異なる第１突起部３ａ及び第２突起部３ｂを有するが、本発明の床材は、これら２種類の突起部を有する場合に限られず、これとは異なる他の突起部が形成されていてもよい。 In addition, in the said embodiment, although the convex part 3 has the 1st projection part 3a and the 2nd projection part 3b from which a shape differs, the flooring of this invention is not restricted to having these 2 types of projection parts, Other protrusions different from this may be formed.

以下、本発明の床材の実施例を説明する。ただし、本発明は、下記実施例に限定されるものではない。 Hereinafter, examples of the flooring of the present invention will be described. However, the present invention is not limited to the following examples.

厚み４．５ｍｍのポリ塩化ビニルシートを、加熱したエンボスロール間に通し、該シートの表面にエンボス加工を施すことにより、床材を作製した。
なお、この塩化ビニルシートは、上から順に、エンボス加工が施される表面層（厚み０．５ｍｍ、ポリ塩化ビニル製）と、補強用織布と、中間層（厚み２．５ｍｍ、ポリ塩化ビニル製）と、裏打ち層（厚み１．５ｍｍ、ポリ塩化ビニル製）と、が積層された積層シートからなる。 A polyvinyl chloride sheet having a thickness of 4.5 mm was passed between heated embossing rolls and embossed on the surface of the sheet to prepare a flooring.
In addition, this vinyl chloride sheet has a surface layer (thickness 0.5 mm, made of polyvinyl chloride) to be embossed, a reinforcing woven fabric, and an intermediate layer (thickness 2.5 mm, polyvinyl chloride) in order from the top. Manufactured) and a backing layer (thickness 1.5 mm, made of polyvinyl chloride).

上記エンボス加工により、このシートの表面に、大別して下記２種類の凸部（第１突起部及び第２突起部）を、下記のパターンで形成した。
第１突起部…直径約３ｍｍ、約２．５ｍｍ、約２ｍｍの平面視真円形状に形成されている（第１突起部は、直径が３種類のものがランダムに形成されている）。この第１突起部の各上面は、その全体が平坦状に形成されている。各突出高は、約０．５ｍｍである。
第２突起部…直径約１ｍｍの平面視真円形状に形成されている。その上面は、その全体が外側へ膨らんだ弧面状に形成されている。突出高は、約０．５ｍｍである。 By the embossing, the following two types of convex portions (first and second protrusions) were roughly formed on the surface of the sheet with the following pattern.
The first protrusions are formed in a perfect circle shape in a plan view with a diameter of about 3 mm, about 2.5 mm, and about 2 mm (the first protrusions are randomly formed with three types of diameters). Each upper surface of the first protrusion is formed flat in its entirety. Each protrusion height is about 0.5 mm.
Second protrusion: formed in a perfect circle shape in plan view with a diameter of about 1 mm. The upper surface is formed in the shape of an arc which bulges outward as a whole. The protruding height is about 0.5 mm.

上記第１突起部の複数を、平面視ドーナツ状の第１密集領域内（図４（ｃ）の符号５ａに示す領域）に、近接して形成した。この際、隣接する第１突起部の幅間隔を約１．５ｍｍとし、縦間隔を約５．０ｍｍとした。
なお、ドーナツ状の第１密集領域は、その幅（図４（ｃ）の符号Ｗで示す）を約１５ｍｍ、直径（図４（ｃ）の符号Ｘで示す）を約１００ｍｍとした。
また、上記第２突起部の複数を、上記第１密集領域以外のシート表面領域に、近接して形成した。隣接する第２突起部の幅間隔を約２．５ｍｍとし、縦間隔を約５．５ｍｍとした。
従って、第２密集領域によって、ドーナツ状の第１密集領域が囲われている。 A plurality of the first protrusions were formed close to each other in the first dense region having a donut shape in plan view (a region indicated by reference numeral 5a in FIG. 4C). At this time, the width interval between adjacent first protrusions was set to about 1.5 mm, and the vertical interval was set to about 5.0 mm.
The doughnut-shaped first dense region had a width (indicated by the symbol W in FIG. 4C) of about 15 mm and a diameter (indicated by the symbol X in FIG. 4C) of about 100 mm.
In addition, a plurality of the second protrusions are formed close to the sheet surface region other than the first dense region. The width interval between adjacent second protrusions was about 2.5 mm, and the vertical interval was about 5.5 mm.
Therefore, the donut-shaped first dense region is surrounded by the second dense region.

該床材を、平らな面上に置き、図５に示すように、床材表面の観察位置に対して４５°及び９０°（９０°＝鉛直方向）の位置から蛍光灯により光を照射し、床材に模様が呈する位置を検証した。
具体的には、床材表面の観察位置に対して４５°の位置から光を照射し、観察者が観察位置を見る視線と床材表面の成す角（以下、「俯角」という）が約０°〜９０°の範囲内において、観察者の視点を移動させつつ観察した。同様に、床材表面の観察位置に対して９０°の位置から光を照射し、俯角約０°〜９０°の範囲内において、観察者の視点を移動させつつ観察した。 The flooring is placed on a flat surface, and as shown in FIG. 5, light is emitted from a fluorescent lamp from a position of 45 ° and 90 ° (90 ° = vertical direction) with respect to the observation position on the flooring surface. Then, the position where the pattern was presented on the flooring was verified.
Specifically, light is irradiated from a position of 45 ° with respect to the observation position on the floor material surface, and the angle formed by the observer's line of sight of the observation position and the floor material surface (hereinafter referred to as “the depression angle”) is about 0. Observation was performed while moving the viewpoint of the observer within the range of ° to 90 °. Similarly, light was irradiated from a position of 90 ° with respect to the observation position on the floor material surface, and observation was performed while moving the observer's viewpoint within a depression angle range of about 0 ° to 90 °.

床材表面の観察位置に対して４５°で光を照射し、俯角約０°〜３０°の範囲で視点を変化させながら表面を観察したときには、表面に模様は表れなかった。
一方、視点を俯角約３０°〜６０°の範囲で変化させながら表面を観察したときには、床材表面にドーナツ状の模様が見えた。このとき、上記第２密集領域が第１密集領域よりも相対的に明るく見えた。
また、第２密集領域と第１密集領域とのコントラストが最も高かったのは、俯角約４５°から床材を観察した場合であり、ドーナツ状の模様が最も鮮明に見えた。
更に、視点を俯角約６０°〜９０°の範囲で変化させながら表面を観察したときには、前記ドーナツ状の模様が消失した。 When light was irradiated at 45 ° with respect to the observation position on the floor material surface and the surface was observed while changing the viewpoint in the range of depression angles of about 0 ° to 30 °, no pattern appeared on the surface.
On the other hand, when the surface was observed while changing the viewpoint within a depression angle range of about 30 ° to 60 °, a donut-shaped pattern was seen on the floor material surface. At this time, the second dense region appeared brighter than the first dense region.
Further, the contrast between the second dense area and the first dense area was highest when the flooring was observed from a depression angle of about 45 °, and the donut-like pattern looked most vivid.
Furthermore, when the surface was observed while changing the viewpoint within a depression angle range of about 60 ° to 90 °, the donut-shaped pattern disappeared.

次に、床材表面の観察位置に対して９０°の位置から光を照射し、俯角約０°〜９０°の範囲で視点を移動させつつ観察した場合、上記４５°で光を照射した場合と同様に、俯角約３０°〜６０°の範囲で観察したときに、ドーナツ状の模様が見えた。
もっとも、該ドーナツ状の模様は、上記４５°で光を照射した場合に比して、やや不鮮明であった。 Next, when irradiating light from a position of 90 ° with respect to the observation position on the flooring surface and observing while moving the viewpoint in a depression angle range of about 0 ° to 90 °, when irradiating light at 45 ° Similarly, a donut-like pattern was seen when observed in a depression angle range of about 30 ° to 60 °.
However, the donut-like pattern was slightly unclear compared to the case where light was irradiated at 45 °.

本発明の床材は、住宅、オフィスビル、マンション、共同廊下、ベランダなどの床面に敷設できる。特に、本発明の床材は、見る位置によって模様が変化するため、多くの人が出入りする公共施設、ショッピングセンター、オフィスビルなどの床材として好適に使用できる。 The flooring of the present invention can be laid on the floor surface of a house, office building, apartment, common corridor, veranda or the like. In particular, since the pattern of the flooring of the present invention changes depending on the viewing position, it can be suitably used as a flooring for public facilities, shopping centers, office buildings and the like where many people come and go.

１…床材
２…基材
３…凸部
３ａ…第１突起部
３ｂ…第２突起部
５ａ…第１密集領域
５ｂ…第２密集領域 DESCRIPTION OF SYMBOLS 1 ... Flooring material 2 ... Base material 3 ... Convex part 3a ... 1st projection part 3b ... 2nd projection part 5a ... 1st congestion area 5b ... 2nd congestion area

Claims

A flooring provided with a plurality of convex portions on the surface of the substrate,
The plurality of protrusions include a first protrusion and a second protrusion that are dot-like in plan view,
The first protrusion and the second protrusion have different shapes,
The area or shape of the shadow generated by the first protrusion when the light is applied to the substrate surface at a predetermined angle is different from the area or shape of the shadow generated by the second protrusion. Flooring.

The flooring according to claim 1, wherein the convex portion is provided on the entire surface of the base material.

The flooring according to claim 1 or 2, wherein the upper surface of one of the first projecting portion and the second projecting portion has a flat portion, and the other upper surface has an arc surface portion.

The flooring material according to any one of claims 1 to 3, wherein an area of an upper surface of one of the first protrusion and the second protrusion is wider than an area of the other upper surface.

The flooring material according to any one of claims 1 to 4, wherein a protruding height from the surface of one of the first protrusion and the second protruding portion is higher than a protruding height from the surface of the other substrate. .

On the surface of the base material, a plurality of dense regions arranged so that at least one of the first protrusion and the second protrusion is close to each other are provided on the surface of the base. The flooring material according to any one of claims 1 to 5.