JP2000071394A - Floor tile - Google Patents

Floor tile

Info

Publication number
JP2000071394A
JP2000071394A JP10262324A JP26232498A JP2000071394A JP 2000071394 A JP2000071394 A JP 2000071394A JP 10262324 A JP10262324 A JP 10262324A JP 26232498 A JP26232498 A JP 26232498A JP 2000071394 A JP2000071394 A JP 2000071394A
Authority
JP
Japan
Prior art keywords
weight
parts
floor tile
vinyl acetate
eva
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP10262324A
Other languages
Japanese (ja)
Other versions
JP3811876B2 (en
Inventor
Gakuhou Sou
学方 宋
Takahisa Miyake
貴久 三宅
Katsuichi Hirata
勝一 平田
Masaaki Endo
昌昭 遠藤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Takiron Co Ltd
Original Assignee
Takiron Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Takiron Co Ltd filed Critical Takiron Co Ltd
Priority to JP26232498A priority Critical patent/JP3811876B2/en
Publication of JP2000071394A publication Critical patent/JP2000071394A/en
Application granted granted Critical
Publication of JP3811876B2 publication Critical patent/JP3811876B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
  • Laminated Bodies (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a floor tile made of an olefinic resin having good adhesion to a floor surface having proper flexibility or cushioning properties and showing a good feeling in walking. SOLUTION: A floor tile is constituted of an upper layer 1 wherein an olefinic resin is compounded with an inorg. filler and a substrate layer 2 wherein 30-50 wt.pts. of an ethylene/vinyl acetate copolymer with a vinyl acetate content of 15-70 wt.%, 15-35 pts.wt. of an ethylene/vinyl acetate copolymer with a vinyl acetate content of 71-90 wt.%, 100-400 pts.wt. of an inorg. filler and 5-15 pts.wt. of rosin are compounded with 10-50 pts.wt. of polyethylene. Pref., a glass fiber mat 3 is embedded in the intermediate part of the floor tile in the thickness thereof to laminate a fiber layer 4 to the bottom surface of the substrate layer 2.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、床面に対する接着
性が良く、柔軟性やクッション性が適度で歩行時の感触
が良い床タイルに関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floor tile having good adhesiveness to a floor surface, moderate flexibility and cushioning property, and good walking feel.

【0002】[0002]

【従来の技術】従来より、ビルやマンションのフローリ
ングには、塩化ビニル樹脂製の床タイルが多用されてい
る。しかし、塩化ビニル樹脂製の床タイルは、火災時に
有害な塩化水素ガスを含んだ煙を多量に発生するため、
人体に悪影響を及ぼし、避難行動や消火活動を妨げると
いう欠点があった。また、可塑剤や安定剤を多量に含む
ため、臭気が強いという欠点もあった。
2. Description of the Related Art Conventionally, flooring made of vinyl chloride resin has been frequently used for flooring of buildings and condominiums. However, floor tiles made of vinyl chloride resin generate a large amount of smoke containing harmful hydrogen chloride gas during a fire,
It has the disadvantage of adversely affecting the human body, preventing evacuation and fire fighting. In addition, there is also a drawback that the odor is strong because it contains a large amount of a plasticizer and a stabilizer.

【0003】このような事情から、ハロゲンを含まない
ポリプロピレンを材料樹脂として、これに炭酸カルシウ
ム等の無機質充填材を配合した床タイルが開発され、使
用されるようになってきた。
[0003] Under these circumstances, floor tiles in which halogen-free polypropylene is used as a material resin and an inorganic filler such as calcium carbonate is blended with the resin have been developed and used.

【0004】[0004]

【発明が解決しようとする課題】しかしながら、上記の
ポリプロピレン製の床タイルは、柔軟性やクッション性
が乏しいため、歩行時の感触が悪く、しかも、脆弱で割
れやすいという問題があった。
However, the above-mentioned polypropylene floor tiles have poor flexibility and cushioning properties, so that they have a poor feel when walking, and are fragile and fragile.

【0005】また、ポリプロピレン製の床タイルは、床
面に対する接着性があまり良くないので、塩化ビニル樹
脂製の床タイルのように大きい接着強度で床面に貼着で
きないという問題もあった。
[0005] In addition, since the floor tile made of polypropylene is not so good in adhesiveness to the floor, there is also a problem that it cannot be adhered to the floor with a large adhesive strength like the floor tile made of a vinyl chloride resin.

【0006】本発明はこれらの問題に鑑みてなされたも
のであって、床面に対する接着性が良く、柔軟性やクッ
ション性が適度で歩行時の感触が良いオレフィン系樹脂
製の床タイルを提供することを目的としている。
The present invention has been made in view of these problems, and provides an olefin resin floor tile having good adhesion to a floor surface, moderate flexibility and cushioning properties, and good walking feel. It is intended to be.

【0007】[0007]

【課題を解決するための手段】上記目的を達成するた
め、本発明の請求項1に係る床タイルは、オレフィン系
樹脂に無機質充填材を配合した上地層と、10〜50重
量部のポリエチレンに、酢酸ビニル含有率が15〜70
重量%のエチレン−酢酸ビニル共重合体を30〜50重
量部、酢酸ビニル含有率が71〜90重量%のエチレン
−酢酸ビニル共重合体を15〜35重量部、無機質充填
材を100〜400重量部、ロジンを5〜15重量部の
割合で配合した下地層とから成ることを特徴とするもの
である。
In order to achieve the above object, a floor tile according to claim 1 of the present invention comprises an upper layer in which an inorganic filler is blended with an olefin resin, and 10 to 50 parts by weight of polyethylene. Having a vinyl acetate content of 15 to 70
30 to 50 parts by weight of an ethylene-vinyl acetate copolymer, 15 to 35 parts by weight of an ethylene-vinyl acetate copolymer having a vinyl acetate content of 71 to 90% by weight, and 100 to 400 parts by weight of an inorganic filler. And rosin in an amount of 5 to 15 parts by weight.

【0008】そして、請求項2に係る床タイルは、ポリ
エチレンが高密度ポリエチレンであることを特徴とし、
請求項3に係る床タイルは、厚み方向の中間部にガラス
繊維マットを埋入したことを特徴とし、請求項4に係る
床タイルは、下地層の底面に寒冷紗等の繊維層を積層し
たことを特徴とするものである。
The floor tile according to claim 2 is characterized in that the polyethylene is high-density polyethylene,
The floor tile according to claim 3 is characterized in that a glass fiber mat is embedded in the middle part in the thickness direction, and the floor tile according to claim 4 has a fiber layer such as a cold gauze laminated on the bottom surface of the base layer. It is characterized by the following.

【0009】床タイルの下地層がポリエチレンに無機質
充填材を配合したものであると、脆弱で割れやすく、柔
軟性やクッション性が殆どないため、上地層をバックア
ップして歩行時の感触を改善することが困難であり、ま
た、接着性を向上させることもできない。けれども、上
記の請求項1の床タイルのように、下地層のポリエチレ
ンに、酢酸ビニル含有率が15〜70重量%のエチレン
−酢酸ビニル共重合体(以下、EVAと記す)と、酢
酸ビニル含有率が71〜90重量%のエチレン−酢酸ビ
ニル共重合体(以下、EVAと記す)と、ロジンを特
定の割合で配合すると、下地層の柔軟性、クッション
性、脆性、接着性などを改善することができる。
[0009] If the base layer of the floor tile is a mixture of polyethylene and an inorganic filler, it is fragile and fragile, and has little flexibility or cushioning. Therefore, the upper layer is backed up to improve the feeling when walking. It is difficult to improve the adhesiveness. However, as in the floor tile according to claim 1, the base layer polyethylene has an ethylene-vinyl acetate copolymer (hereinafter referred to as EVA) having a vinyl acetate content of 15 to 70% by weight and a vinyl acetate content. When the ethylene-vinyl acetate copolymer (hereinafter, referred to as EVA) having a ratio of 71 to 90% by weight and rosin are blended in a specific ratio, the flexibility, cushioning property, brittleness, adhesiveness, and the like of the underlayer are improved. be able to.

【0010】即ち、EVA、EVAはいずれも、極
性基を有する接着性の良い酢酸ビニルを含んだ共重合体
であって、ポリエチレンとの相溶性に富むものであるか
ら、これらのEVA、EVAを配合すると、下地層
の接着性の改善に有効に作用する。そして、ロジンはE
VA、EVAとの相溶性に富み、無機質充填材との
密着性にも優れるため、無機質充填材をしっかり保持し
て下地層の脆弱化を抑制し、床面との接着強度を高める
働きをする。
That is, since EVA and EVA are copolymers containing vinyl acetate having a polar group and having good adhesiveness and having high compatibility with polyethylene, when EVA and EVA are blended, Effectively acts to improve the adhesion of the underlayer. And rosin is E
It is rich in compatibility with VA and EVA and has excellent adhesion to inorganic fillers. Therefore, it functions to hold the inorganic fillers firmly, suppress the brittleness of the underlayer, and increase the adhesive strength with the floor surface. .

【0011】また、EVAは比較的軟質の共重合体で
あり、EVAは比較的硬質の共重合体であるから、上
記のようにEVAを30〜50重量部、EVAを1
5〜35重量部の割合で配合すると、下地層の柔軟性や
クッション性が適度となり、上地層をバックアップして
歩行時の感触を改善することが可能となる。
Further, since EVA is a relatively soft copolymer and EVA is a relatively hard copolymer, as described above, 30 to 50 parts by weight of EVA and 1 of EVA are used.
When it is blended at a ratio of 5 to 35 parts by weight, the flexibility and cushioning property of the base layer become appropriate, and the feel of walking can be improved by backing up the upper layer.

【0012】下地層のポリエチレンとしては、請求項2
の床タイルに用いる高密度ポリエチレンが好適である。
また、請求項3の床タイルのように厚み方向の中間部に
ガラス繊維マットを埋入すると、床タイルの反りを防止
し、寸法安定性を高めることができる。更に、請求項4
の床タイルのように下地層の底面に寒冷紗等の繊維層を
積層すると、繊維層のアンカー効果によって下地層の接
着性が一層向上するようになる。
[0012] The polyethylene of the underlayer is preferably
High-density polyethylene for floor tiles is preferred.
Further, when the glass fiber mat is embedded in the middle part in the thickness direction as in the floor tile of the third aspect, warpage of the floor tile can be prevented and dimensional stability can be improved. Claim 4
When a fiber layer such as a cold gauze is laminated on the bottom surface of the base layer as in the case of a floor tile, the adhesiveness of the base layer is further improved by the anchor effect of the fiber layer.

【0013】[0013]

【発明の実施の形態】以下、図面を参照しながら本発明
の具体的な実施形態を詳述する。
DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings.

【0014】図1は本発明の一実施形態に係る床タイル
の斜視図、図2はその概略拡大断面図である。
FIG. 1 is a perspective view of a floor tile according to an embodiment of the present invention, and FIG. 2 is a schematic enlarged sectional view thereof.

【0015】この床タイルは、一辺の長さが30〜45
cm程度の正方形に形成されたもので、上地層1と下地
層2が積層一体化されており、その層間部にガラス繊維
マット3が埋入されている。そして、下地層2の底面に
は、更に寒冷紗等の繊維層4が半ば埋入状態で積層され
ている。
This floor tile has a side length of 30 to 45.
The upper layer 1 and the lower layer 2 are laminated and integrated, and a glass fiber mat 3 is embedded between the layers. On the bottom surface of the base layer 2, a fiber layer 4 such as a cold gauze is further laminated in a partially embedded state.

【0016】上地層1は、オレフィン系樹脂に無機質充
填材を配合した厚さ1〜5mm程度の層である。好まし
い上地層1としては、ポリプロピレンやポリエチレン
に、変性ポリオレフィン(メタクリル酸、無水マレイン
酸、アクリル酸のいずれかで変性されたポリエチレン、
ポリプロピレン、エチレン−酢酸ビニル共重合体等)や
エチレン−酢酸ビニル共重合体やエチレン−メタクリル
酸共重合体などを一種又は二種以上混合し、これに無機
質充填材として炭酸カルシウムや水酸化アルミニウムの
粉末を配合したものが挙げられる。このような上地層1
は、ポリッシャーによる表面光沢の向上や回復が良く、
ワックスを使用しないで満足なメンテナンスを行えると
いった長所を有する。
The upper layer 1 is a layer having a thickness of about 1 to 5 mm in which an inorganic filler is mixed with an olefin resin. As the preferable upper layer 1, polypropylene or polyethylene, modified polyolefin (methacrylic acid, maleic anhydride, polyethylene modified with any of acrylic acid,
Polypropylene, ethylene-vinyl acetate copolymer, etc.), ethylene-vinyl acetate copolymer, ethylene-methacrylic acid copolymer, or a mixture of two or more thereof, and calcium carbonate or aluminum hydroxide as an inorganic filler. Powdered powders may be used. Upper layer 1
Has good improvement and recovery of surface gloss by polisher,
It has the advantage that satisfactory maintenance can be performed without using wax.

【0017】なお、この上地層1には、必要に応じて顔
料、過酸化系の架橋剤、カップリング剤、ビスアマイド
等の滑剤、フェノール系の酸化防止剤、ヒンダードアミ
ン系の光安定剤など、各種の添加剤を少量含有させても
よく、また、ロジンを含有させてもよい。更に、上地層
1の表面に模様や図柄を形成して美観を向上させるよう
にしてもよい。
The upper layer 1 may contain various pigments, peroxide-based crosslinking agents, coupling agents, lubricants such as bisamides, phenol-based antioxidants, hindered amine-based light stabilizers, etc., if necessary. May be contained in a small amount, or rosin may be contained. Further, a pattern or a pattern may be formed on the surface of the upper ground layer 1 to improve the appearance.

【0018】下地層2は、10〜50重量部のポリエチ
レンに、EVAを30〜50重量部、EVAを15
〜35重量部、無機質充填材を100〜400重量部、
ロジンを5〜15重量部の割合で配合した、厚さ0.5
〜5mm程度の層である。
The underlayer 2 is composed of 10 to 50 parts by weight of polyethylene, 30 to 50 parts by weight of EVA, and 15 parts of EVA.
~ 35 parts by weight, 100-400 parts by weight of inorganic filler,
Rosin was blended at a ratio of 5 to 15 parts by weight, thickness 0.5
It is a layer of about 5 mm.

【0019】ポリエチレンとしては、中・低圧法で製造
される分子の枝分れが少ない高密度ポリエチレン(比
重:0.94〜0.96程度)が好適に使用されるが、
高圧法で製造される低密度ポリエチレン(比重:0.9
2程度)や、メタロセン触媒を用いてα−エチレンを重
合して得られるメタロセンポリエチレンなども勿論使用
される。
As the polyethylene, a high-density polyethylene (specific gravity: about 0.94 to 0.96) having a small number of branches of a molecule produced by a medium / low pressure method is preferably used.
Low density polyethylene produced by high pressure method (specific gravity: 0.9
Of course, metallocene polyethylene obtained by polymerizing α-ethylene using a metallocene catalyst is also used.

【0020】EVA及びEVAは、既述したように
下地層2に適度な柔軟性とクッション性を付与すると共
に、床面に対する接着性を改善するために配合されるも
のである。即ち、EVAは酢酸ビニルを15〜70重
量%の割合で含有する比較的軟質の共重合体であり、E
VAは酢酸ビニルを71〜90重量%の割合で含有す
る比較的硬質の共重合体であるから、比較的軟質のEV
Aを30〜50重量部、比較的硬質のEVAを15
〜35重量部の割合でポリエチレンに配合すると、下地
層2の柔軟性やクッション性が適度となり、この下地層
2で上地層1をバックアップして歩行時の感触を改善で
きるのである。しかも、EVA及びEVAは極性基
を有する接着性の良い酢酸ビニルを含み、ポリエチレン
との相溶性に富むものであるから、これらのEVA、
EVAを配合すると、下地層2の接着性も改善できる
のである。
As described above, EVA and EVA are compounded to impart appropriate flexibility and cushioning properties to the underlayer 2 and to improve adhesion to the floor surface. That is, EVA is a relatively soft copolymer containing 15 to 70% by weight of vinyl acetate,
Since VA is a relatively hard copolymer containing vinyl acetate in a proportion of 71 to 90% by weight, a relatively soft EV is used.
A is 30 to 50 parts by weight, and relatively hard EVA is 15
When blended with polyethylene at a ratio of up to 35 parts by weight, the flexibility and cushioning properties of the underlayer 2 become moderate, and the underlayer 2 can back up the upper layer 1 to improve the feel when walking. Moreover, since EVA and EVA contain vinyl acetate having a polar group and good adhesion and are highly compatible with polyethylene, these EVA,
When EVA is blended, the adhesion of the underlayer 2 can be improved.

【0021】EVAが50重量部より多くなりEVA
が15重量部より少なくなると、下地層2の柔軟性や
クッション性が悪くなるので、歩行時の感触を十分に改
善し難くなると共に、下地層2が脆弱化するようにな
る。一方、EVAが30重量部より少なくなりEVA
が35重量部より多くなると、下地層2の柔軟性が増
して、耐凹み性が低下するようになる。
When EVA exceeds 50 parts by weight, EVA
If the content is less than 15 parts by weight, the flexibility and cushioning property of the underlayer 2 deteriorate, so that it is difficult to sufficiently improve the feel when walking, and the underlayer 2 becomes brittle. On the other hand, EVA becomes less than 30 parts by weight,
Exceeds 35 parts by weight, the flexibility of the underlayer 2 increases, and the dent resistance decreases.

【0022】ロジンは、既述したように下地層2の接着
性を高めるために、5〜15重量部の割合で配合される
ものである。このロジンはEVA、EVAとの相溶
性に富み、無機質充填材との密着性にも優れるため、無
機質充填材をしっかり保持して下地層の脆弱化を抑制
し、床面との接着強度を高めることができるのである。
ロジンが5重量部より少なくなると、EVA、EVA
を配合していても、下地層2の接着性を顕著に改善す
ることが難しくなり、一方、15重量部よりも多くなる
と、下地層2の抗張力の低下を招く恐れが生じる。
As described above, rosin is blended in an amount of 5 to 15 parts by weight in order to enhance the adhesiveness of the underlayer 2. This rosin is rich in compatibility with EVA and EVA, and has excellent adhesion to inorganic fillers. Therefore, the rosin holds the inorganic fillers firmly, suppresses the brittleness of the underlayer, and increases the adhesive strength with the floor surface. You can do it.
If rosin is less than 5 parts by weight, EVA, EVA
Is difficult to remarkably improve the adhesiveness of the underlayer 2, while if it exceeds 15 parts by weight, the tensile strength of the underlayer 2 may be reduced.

【0023】また、無機質充填材は、増量効果と難燃性
を高めるために配合されるもので、従来公知の種々の充
填材を使用できるが、その中でも10μm以下の平均粒
径を有する炭酸カルシウムの粉末や、この炭酸カルシウ
ム粉末と水酸化アルミニウム粉末との混合粉末が好適に
使用される。炭酸カルシウム粉末を配合するだけでも難
燃性を付与することはできるが、炭酸カルシウム粉末と
水酸化アルミニウム粉末との混合粉末を配合すると、水
酸化アルミニウムが熱分解時に水を放出するため、難燃
性の高い床タイルを得ることができる。
The inorganic filler is blended for enhancing the effect of increasing the weight and increasing the flame retardancy, and various conventionally known fillers can be used. Among them, calcium carbonate having an average particle diameter of 10 μm or less is preferred. Powder or a mixed powder of the calcium carbonate powder and the aluminum hydroxide powder is preferably used. Flame retardancy can be imparted only by blending calcium carbonate powder, but when blended powder of calcium carbonate powder and aluminum hydroxide powder is used, aluminum hydroxide releases water during thermal decomposition, resulting in flame retardancy. It is possible to obtain floor tiles with high properties.

【0024】既述したように、下地層2のポリエチレン
の配合量は10〜50重量部、無機質充填材の配合量は
100〜400重量部とすることが必要であって、ポリ
エチレンが50重量部より多くなり無機質充填材が40
0重量部より多くなると、上記のようにEVAとEV
Aとロジンを配合しても、下地層2が硬くて脆いもの
となり、接着性も低下するといった不都合が生じる。一
方、下地層2のポリエチレンが10重量部より少なくな
り無機質充填材が100重量部より少なくなると、下地
層2の耐凹み性が低下すると共に、難燃性も低下すると
いった不都合が生じる。
As described above, it is necessary that the blending amount of the polyethylene of the underlayer 2 is 10 to 50 parts by weight, the blending amount of the inorganic filler is 100 to 400 parts by weight, and the polyethylene is 50 parts by weight. More and 40 mineral fillers
If the amount exceeds 0 parts by weight, EVA and EV
Even if A and rosin are blended, the underlying layer 2 becomes hard and brittle, and disadvantages such as reduced adhesiveness occur. On the other hand, if the polyethylene of the underlayer 2 is less than 10 parts by weight and the amount of the inorganic filler is less than 100 parts by weight, there is a problem that the dent resistance of the underlayer 2 is reduced and the flame retardancy is also reduced.

【0025】なお、この下地層2にも前記の添加剤を必
要に応じて少量配合してもよいことは言うまでもない。
It goes without saying that a small amount of the above-mentioned additives may be added to the underlayer 2 if necessary.

【0026】ガラス繊維マット3は、床タイルの反りを
防止すると共に、寸法安定性を高めるものであって、こ
の実施形態の床タイルでは、上地層1と下地層2との層
間部に埋入しているが、必ずしも層間部に埋入する必要
はなく、床タイルの厚み方向の中間部に埋入すればよ
い。
The glass fiber mat 3 serves to prevent warpage of the floor tile and enhance dimensional stability. In the floor tile of this embodiment, the glass fiber mat 3 is embedded in an interlayer portion between the upper ground layer 1 and the ground layer 2. However, it is not always necessary to embed it in the interlayer, and it is sufficient to embed it in the middle part of the floor tile in the thickness direction.

【0027】また、下地層2の底面になかば埋入状態で
積層されている繊維層4は、繊維のアンカー効果によっ
て接着性を一層向上させるものであり、寒冷紗の他にも
不織布、織布、ガラス繊維、紙など、種々のものを使用
することができる。
The fiber layer 4, which is laminated on the bottom surface of the base layer 2 in a partially embedded state, further improves the adhesiveness by the anchor effect of the fibers. Various materials such as glass fiber and paper can be used.

【0028】以上のような構成の床タイルは、例えば次
の方法によって製造することができる。
The floor tile having the above structure can be manufactured, for example, by the following method.

【0029】まず、オレフィン系樹脂に無機質充填材を
配合し、押出機で造粒して上地層1形成用の粉粒体を造
る。一方、10〜50重量部のポリエチレンと、30〜
50重量部のEVAと、15〜35重量部のEVA
と、100〜400重量部の無機質充填材と、5〜15
重量部のロジンを混合し、押出機でシーティングして下
地層2となるシートを造る。
First, an inorganic filler is blended with an olefin resin, and the mixture is granulated by an extruder to produce a powdery material for forming the upper layer 1. On the other hand, 10 to 50 parts by weight of polyethylene, 30 to
50 parts by weight of EVA and 15 to 35 parts by weight of EVA
And 100 to 400 parts by weight of an inorganic filler, and 5 to 15 parts by weight.
A part of the rosin is mixed and then sheeted by an extruder to form a sheet to be the base layer 2.

【0030】そして、このシートの下面に繊維層4を敷
くと共に、シートの上面にガラス繊維マット3を重ね、
その上に前記の粉粒体を積層して加熱し、加圧ロール等
で加圧して一体化した後、所定の寸法の正方形に切断し
て床タイルを製造する。尚、繊維層4は後で下地層2の
底面に熱圧着するようにしてもよい。
Then, a fiber layer 4 is laid on the lower surface of the sheet, and a glass fiber mat 3 is stacked on the upper surface of the sheet.
The above-mentioned powder and granules are laminated thereon, heated, pressed and integrated by a pressure roll or the like, and then cut into squares of a predetermined size to produce floor tiles. The fiber layer 4 may be thermocompression-bonded to the bottom surface of the underlayer 2 later.

【0031】このようにして得られる本発明の床タイル
は、適度な柔軟性及びクッション性を有する下地層2に
よって上地層1がバックアップされているため、歩行時
の感触が良く、耐凹み性も良好であり、また、下地層2
の接着性が改善されているので、市販のウレタン系の床
用接着剤を用いて床面に大きい接着強度で貼着すること
ができる。そして、下地層2の脆性も改善されているの
で、重い物を床タイルの上に落としても、簡単に割れる
心配がなくなり、また、ガラス繊維マット3が埋入され
ているので、床タイルに反りが発生したり寸法が変動す
る心配もなくなる。
The floor tile of the present invention thus obtained has a good feel when walking and a good dent resistance because the upper layer 1 is backed up by the base layer 2 having appropriate flexibility and cushioning properties. Good and the underlayer 2
Can be adhered to a floor surface with a large adhesive strength using a commercially available urethane floor adhesive. And since the brittleness of the underlayer 2 is also improved, even if a heavy object is dropped on the floor tile, there is no fear of easily breaking, and the glass fiber mat 3 is embedded so that the floor tile can be used. There is no need to worry about warpage or dimensional fluctuation.

【0032】次に、本発明に係る床タイルの下地層の効
果を確認するための実験について説明する。
Next, an experiment for confirming the effect of the underlayer of the floor tile according to the present invention will be described.

【0033】[下地層の効果確認実験]35重量部の高
密度ポリエチレン(東ソー(株)製のHDPE240
0)に、酢酸ビニル含有率60重量%のEVAを35
重量部、酢酸ビニル含有率80重量%のEVAを30
重量部、ロジンを10重量部、平均粒径が3μmの炭酸
カルシウム粉末を350重量部の割合で均一に混練し、
押出機でシーティングして下地層となるシートa(厚さ
2mm)を得た。
[Experiment for confirming effect of underlayer] 35 parts by weight of high-density polyethylene (HDPE240 manufactured by Tosoh Corporation)
0), 35 EVA with a vinyl acetate content of 60% by weight was added.
30 parts by weight of EVA having a vinyl acetate content of 80% by weight.
Parts by weight, 10 parts by weight of rosin, and 350 parts by weight of calcium carbonate powder having an average particle size of 3 μm are uniformly kneaded,
Sheeting was performed by an extruder to obtain a sheet a (thickness: 2 mm) to be a base layer.

【0034】また、40重量部の高密度ポリエチレン
に、上記のEVAを40重量部、上記のEVAを2
0重量部、ロジンを10重量部、炭酸カルシウム粉末を
350重量部の割合で均一に混練し、押出機でシーティ
ングして下地層となるシートb(厚さ2mm)を得た。
Further, 40 parts by weight of the above EVA and 2 parts of the above EVA were added to 40 parts by weight of high-density polyethylene.
0 parts by weight, 10 parts by weight of rosin, and 350 parts by weight of calcium carbonate powder were uniformly kneaded, and sheeting was performed with an extruder to obtain a sheet b (2 mm thick) serving as a base layer.

【0035】これらのシートa,bについて、接着強
度、柔軟性、脆性、残留凹みを次の要領で調べた。
For these sheets a and b, the adhesive strength, flexibility, brittleness and residual dent were examined in the following manner.

【0036】(イ)接着強度 シートa,bをそれぞれ30×30cmの正方形に切断
して試験片を作製し、ウレタン系床用接着剤を用いて2
0分のオープンタイムで各試験片を石綿スレート板に貼
付け、室温で1週間硬化させた。硬化後、各試験片を5
cm幅の6つの帯体に切断し、両端を除く4つの帯体の
うちから3つの帯体を選択して、その帯体端部にバネば
かりを順々に引っ掛けて引き上げ、各帯体が剥離すると
きの力を測定して、その測定値の平均値を求めた。その
結果を下記の表1に示す。
(A) Adhesive Strength Each of the sheets a and b is cut into a square of 30 × 30 cm to prepare a test piece, and a test piece is prepared using a urethane floor adhesive.
Each test piece was affixed to an asbestos slate plate with an open time of 0 minutes, and cured at room temperature for one week. After curing, 5
Cut into six strips of cm width, select three strips from the four strips excluding both ends, hook the springs one by one at the end of the strip, and pull up, The force at the time of peeling was measured, and the average of the measured values was determined. The results are shown in Table 1 below.

【0037】(ロ)柔軟性 シートa,bを幅5cm、長さ25cmの帯状に切断し
て多数の試験片を作製し、直径が異なる複数のパイプに
上記の帯状試験片を巻き付ける操作を3回ずつ繰り返し
て、3回とも帯状試験片にひび割れが生じない最小直径
のパイプを調べ、そのパイプの直径の大小から柔軟性の
良否を判断した。その結果を下記の表1に示す。
(B) Flexibility Sheets a and b are cut into strips having a width of 5 cm and a length of 25 cm to produce a large number of test pieces, and the operation of winding the strip test pieces around a plurality of pipes having different diameters is performed in three steps. Each time, the pipe having the minimum diameter which did not cause cracks in the strip test piece was examined three times, and the quality of the flexibility was judged based on the diameter of the pipe. The results are shown in Table 1 below.

【0038】(ハ)脆性 1kgの鋼球をシートa,bの試験片に落下させ、試験
片が割れる高さを測定して脆性の良否を判断した。その
結果を下記の表1に示す。
(C) Brittleness 1 kg of steel ball was dropped on the test pieces of the sheets a and b, and the height at which the test pieces were cracked was measured to determine the quality of the brittleness. The results are shown in Table 1 below.

【0039】(二)残留凹み JIS A 5705の残留凹みの試験方法に基づい
て、シートa,bの試験片の残留凹みを調べた。その結
果を下記の表1に示す。
(2) Residual dents The residual dents of the test pieces of the sheets a and b were examined based on the residual dent test method of JIS A 5705. The results are shown in Table 1 below.

【0040】比較のために、下記の表1に示す組成のシ
ートc,d,e,fを作製し、上記と同様にして接着強
度、柔軟性、脆性、残留凹みを調べた。その結果を下記
の表1に示す。
For comparison, sheets c, d, e, and f having the compositions shown in Table 1 below were prepared, and the adhesive strength, flexibility, brittleness, and residual dent were examined in the same manner as described above. The results are shown in Table 1 below.

【0041】[0041]

【表1】 [Table 1]

【0042】この表1を見ると、本発明の下地層と同じ
組成のシートa,bはいずれも、接着強度が3.0kg
/5cmより大きく、良好な接着性を有することが判
る。
It can be seen from Table 1 that the sheets a and b having the same composition as the underlayer of the present invention both had an adhesive strength of 3.0 kg.
/ 5 cm, which indicates good adhesiveness.

【0043】これに対し、ロジンが2重量部と少ない比
較用のシートeは、接着強度が1.5kg/5cm未満
と小さく、シートa,bの接着強度の半分以下であり、
このことから、ロジンが接着性の向上に極めて有効であ
ることが判る。また、EVAが10重量部と少ない比
較用のシートdは、接着強度が1.5kg/5cm未満
と小さく、一方、EVAが60重量部と多い比較用の
シートcは、接着強度が5kg/5cmより大きくなっ
ており、このことから、EVAよりもEVAの方が
接着性の改善に遥かに有効であることが判る。
On the other hand, the comparative sheet e having a small amount of rosin of 2 parts by weight has a small adhesive strength of less than 1.5 kg / 5 cm, which is less than half of the adhesive strength of the sheets a and b.
This shows that rosin is extremely effective in improving the adhesiveness. The comparative sheet d having a small EVA of 10 parts by weight has a small adhesive strength of less than 1.5 kg / 5 cm, while the comparative sheet c having a large EVA of 60 parts by weight has a adhesive strength of 5 kg / 5 cm. This shows that EVA is much more effective in improving the adhesiveness than EVA.

【0044】また、本発明の下地層と同じ組成のシート
a,bはいずれも、柔軟性の試験でひび割れが生じない
最小のパイプ径が50mm以下と小さく、適度な柔軟性
を有しており、落球高さも1m以上であって、脆性が改
善されていることが判る。そして、このシートa,bの
残留凹みは10%以上であり、耐凹み性も改善されてい
ることが判る。
Further, each of the sheets a and b having the same composition as the underlayer of the present invention has a small minimum pipe diameter of 50 mm or less which does not cause cracking in the flexibility test, and has an appropriate flexibility. The falling ball height was 1 m or more, indicating that the brittleness was improved. The residual dents of the sheets a and b are 10% or more, which indicates that the dent resistance is also improved.

【0045】これに対し、比較的硬質のEVAが50
重量部と多い比較用のシートdは、最小のパイプ径が1
50mm以上と大きく、柔軟性に劣っており、落球高さ
も0.5m以上と低く、脆性が改善されていない。一
方、比較的軟質のEVAを60重量部と多量に含む比
較用のシートcは、柔軟性及び脆性の改善が顕著である
が、残留凹みが50%と高く、耐凹み性に劣っているこ
とが判る。また、ロジンが2重量部と少ない比較用のシ
ートeは、柔軟性や脆性が悪く、逆に、ロジンが20重
量部と多い比較用のシートfは、柔軟性や脆性が良くな
っており、このことから、ロジンは柔軟性や脆性の改善
に有効であることが判る。そして、ロジンが多いシート
fは残留凹みも50%以上と高く、このことから、ロジ
ンは耐凹み性の改善に悪影響を与えることが判る。
On the other hand, the relatively hard EVA is 50
The comparative sheet d, which is large in weight, has a minimum pipe diameter of 1
It is as large as 50 mm or more, inferior in flexibility, and the falling ball height is as low as 0.5 m or more, and the brittleness is not improved. On the other hand, the comparative sheet c containing a relatively large amount of relatively soft EVA of 60 parts by weight has remarkable improvement in flexibility and brittleness, but has a high residual dent of 50% and is inferior in dent resistance. I understand. In addition, the comparative sheet e having a small amount of rosin of 2 parts by weight has poor flexibility and brittleness, while the comparative sheet f having a large amount of rosin of 20 parts by weight has good flexibility and brittleness. This indicates that rosin is effective in improving flexibility and brittleness. The sheet f having a large amount of rosin has a high residual dent of 50% or more, which indicates that the rosin has an adverse effect on the improvement of the dent resistance.

【0046】[0046]

【発明の効果】以上の説明および実験データから明らか
なように、本発明の床タイルは、適度な柔軟性及びクッ
ション性を有する下地層によって上地層がバックアップ
されているため、歩行時の感触が良く、耐凹み性も良好
であり、また、下地層の接着性が良いので市販の床用接
着剤を用いて床面に強固に貼着することができ、下地層
の脆性も改善されているので簡単に割れる心配がないと
いった顕著な効果を奏する。
As is apparent from the above description and the experimental data, the floor tile of the present invention has an upper layer that is backed up by a base layer having appropriate flexibility and cushioning properties, so that the feeling when walking is improved. Good, good dent resistance, and good adhesion of the underlayer, so that it can be firmly adhered to the floor using a commercially available floor adhesive, and the brittleness of the underlayer is also improved. Therefore, there is a remarkable effect that there is no fear of being easily broken.

【0047】更に、ガラス繊維マットを埋入した床タイ
ルは、反りが発生し難く寸法安定性が良好であり、ま
た、下地層の底面に繊維層を積層した床タイルは接着性
が更に向上するといった効果を奏する。
Further, the floor tile in which the glass fiber mat is embedded has a good dimensional stability because it is hardly warped, and the adhesion of the floor tile in which the fiber layer is laminated on the bottom surface of the base layer is further improved. This has the effect.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明の一実施形態に係る床タイルを示す斜視
図である。
FIG. 1 is a perspective view showing a floor tile according to an embodiment of the present invention.

【図2】同床タイルの概略拡大断面図である。FIG. 2 is a schematic enlarged sectional view of the floor tile.

【符号の説明】[Explanation of symbols]

1 上地層 2 下地層 3 ガラス繊維マット 4 繊維層 Reference Signs List 1 upper layer 2 base layer 3 glass fiber mat 4 fiber layer

───────────────────────────────────────────────────── フロントページの続き (72)発明者 平田 勝一 大阪市中央区安土町2丁目3番13号 タキ ロン株式会社内 (72)発明者 遠藤 昌昭 大阪市中央区安土町2丁目3番13号 タキ ロン株式会社内 Fターム(参考) 4F100 AA00A AA00B AA00H AA08A AA08H AG00C AJ02B AK03A AK04B AK05B AK07A AK68B AK68K AL05B BA02 BA04 BA10A BA10B BA10D BA16 CA23A DG01C DG11C DG12D GB08 JK06 JK11 JK13 JL04 YY00B  ──────────────────────────────────────────────────続 き Continuing from the front page (72) Katsuichi Hirata, 2-3-13 Azuchicho, Chuo-ku, Osaka City Inside Takiron Co., Ltd. (72) Masaaki Endo 2-3-3, Azuchicho, Chuo-ku, Osaka City F-term (reference) in Takilon Co., Ltd.

Claims (4)

【特許請求の範囲】[Claims] 【請求項1】オレフィン系樹脂に無機質充填材を配合し
た上地層と、10〜50重量部のポリエチレンに、酢酸
ビニル含有率が15〜70重量%のエチレン−酢酸ビニ
ル共重合体を30〜50重量部、酢酸ビニル含有率が7
1〜90重量%のエチレン−酢酸ビニル共重合体を15
〜35重量部、無機質充填材を100〜400重量部、
ロジンを5〜15重量部の割合で配合した下地層とから
成る床タイル。
An upper layer in which an inorganic filler is blended with an olefin resin, 10 to 50 parts by weight of polyethylene, and 30 to 50 parts by weight of an ethylene-vinyl acetate copolymer having a vinyl acetate content of 15 to 70% by weight. Parts by weight, vinyl acetate content 7
1 to 90% by weight of ethylene-vinyl acetate copolymer
~ 35 parts by weight, 100-400 parts by weight of inorganic filler,
A floor tile comprising a base layer containing rosin in an amount of 5 to 15 parts by weight.
【請求項2】ポリエチレンが高密度ポリエチレンである
請求項1に記載の床タイル。
2. The floor tile according to claim 1, wherein the polyethylene is high density polyethylene.
【請求項3】厚み方向の中間部にガラス繊維マットを埋
入した請求項1又は請求項2に記載の床タイル。
3. The floor tile according to claim 1, wherein a glass fiber mat is embedded in an intermediate portion in a thickness direction.
【請求項4】下地層の底面に寒冷紗等の繊維層を積層し
た請求項1〜請求項3のいずれかに記載の床タイル。
4. The floor tile according to claim 1, wherein a fiber layer such as a cold gauze is laminated on the bottom surface of the underlayer.
JP26232498A 1998-08-31 1998-08-31 Floor tile Expired - Lifetime JP3811876B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP26232498A JP3811876B2 (en) 1998-08-31 1998-08-31 Floor tile

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP26232498A JP3811876B2 (en) 1998-08-31 1998-08-31 Floor tile

Publications (2)

Publication Number Publication Date
JP2000071394A true JP2000071394A (en) 2000-03-07
JP3811876B2 JP3811876B2 (en) 2006-08-23

Family

ID=17374199

Family Applications (1)

Application Number Title Priority Date Filing Date
JP26232498A Expired - Lifetime JP3811876B2 (en) 1998-08-31 1998-08-31 Floor tile

Country Status (1)

Country Link
JP (1) JP3811876B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11655638B2 (en) 2014-07-04 2023-05-23 Flooring Industries Limited, Sarl Floor panel and method for manufacturing floor panels

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11655638B2 (en) 2014-07-04 2023-05-23 Flooring Industries Limited, Sarl Floor panel and method for manufacturing floor panels
US11976474B2 (en) 2014-07-04 2024-05-07 Unilin Bv Floor panel and method for manufacturing floor panels

Also Published As

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