JP4179822B2 - Flooring - Google Patents

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JP4179822B2
JP4179822B2 JP2002225667A JP2002225667A JP4179822B2 JP 4179822 B2 JP4179822 B2 JP 4179822B2 JP 2002225667 A JP2002225667 A JP 2002225667A JP 2002225667 A JP2002225667 A JP 2002225667A JP 4179822 B2 JP4179822 B2 JP 4179822B2
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Prior art keywords
floor tile
matrix resin
weight
amorphous polymer
tile
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JP2003176621A (en
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正男 大谷
勝己 佐々木
隆洋 下打
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東リ株式会社
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Description

【0001】
【発明の属する技術分野】
本発明は、物性と施工後の耐久性に優れたタイ 関する。
【0002】
【従来の技術】
櫛目は床材施工時に櫛刷毛で接着剤を下地に塗布した後、床材をその上に載置して、床材を接着する際に床材上から櫛目跡が見える望ましくない現象である。また椅子のキャスターにより、従来のコンポジションタイルではこの櫛目の部分で割れる現象があった。
【0003】
【発明が解決しようとする課題】
本発明の課題は櫛目割が生じず、施工後の耐久性とメンテナンス性の優れた床タイルを提供することにある。
【0004】
【課題を解決するための手段】
本発明はポリ塩化ビニルよりなるマトリックス樹脂に、該マトリックス樹脂の加工温度範囲内に軟化温度を有するポリエステル共重合体よりなる非晶質ポリマーと、マトリックス樹脂と非晶質ポリマーの合計樹脂100重量部に対し100から800重量部の充填材を配合し、均一混練した樹脂層を有する床タイルに係る。
【0005】
【発明の実施の形態】
図1は本発明タイル製造工程を例示する。ホッパー1にマトリックス樹脂組成物のペレット2が投入されており、バンバリー3で180〜300℃で加熱混練される。ペレットは加工工程上0.5〜5.0mmの厚さ、さらに好ましくは1.0から4.0mmの厚さで径は1.0〜10.0mmの大きさが好ましい。マトリックス樹脂はタイル製造時のバインダーに相当し、前記マトリックス樹脂からなるペレットは、コンポジションタイル(バインダーが30%未満)に練り込むことにより、リサイクルすることができる。また、前記ペレットから構成するタイル製造時に発生する端材等も同様にリサイクルすることができる。このようなタイルリサイクル破砕品が使用でき、もちろん、それ以外の熱可塑性樹脂リサイクル破砕品も使用できる。マトリックス樹脂としてはPVC(ポリ塩化ビニル)が使用される。
【0006】
充填剤は炭酸カルシウム、タルク、クレー等で、樹脂100重量部に対し好ましくは100から800重量部配合される。
【0007】
本発明において、マトリックス樹脂と、これに均一混練可能な非晶質ポリマー及び充填剤を床材に配合する。この非晶質ポリマーとしては、ポリエステル単独重合体または共重合体が好適である。
本発明においてポリエステル共重合体は、ポリエチレンテレフタレートのエチレングライコールを他のジオールで置換したものと定義する。例えば、エチレングライコールはシクロヘキサンジメタノールで10〜80重量%、好ましくは20〜40重量%置換された共重合体が好ましい。
上記プラスチック加工温度は100から300℃が好適で、混練一体化する。上記非晶質ポリマーはこの温度範囲内に加工温度を有する。なお、ちなみに非晶質ポリプロピレンの軟化温度は107〜157℃、非晶質ポリエステルの軟化温度は67〜72℃である。
この非晶質ポリマーはマトリックス樹脂に対し0.5〜35重量%、好ましくは1〜15重量%、更に好ましくは1〜12重量%添加する。
非晶質ポリマーとしては、リサイクル品でも上記軟化温度の条件を満たすならば、使用可能である。
その他の添加剤として、顔料、帯電防止剤、滑剤等の加工助剤等が例示される。
【0008】
マトリックス樹脂、非晶質ポリマー、充填剤、可塑剤、安定剤、及び必要に応じてその他添加剤をバンバリーミキサーで混練し、得られた混練物をミルロール4で混練・圧延してパット状に成形する。さらに第1カレンダーロール6、6’、第2カレンダーロール7、7’で順次圧延し、全厚1.5〜5mmのシートに成形・冷却後、タイル状裁断機8で1辺が20〜90cm、好ましくは20〜50cmのタイル状に裁断し、本発明プラスチック床タイル9を得る。
また本発明において、組成物全体を柔軟化する配合にすることにより、例えば、可塑剤量を増やしたり、充填剤量を減らすことにより、シートとしても使用可能である。
【0009】
尚、マトリックス樹脂と、非晶質ポリマーの混練一体化されたペレットがたとえばホッパーから直接ペレットがベースシート上に2〜15mmの厚さで撒布たい積され、その後圧延されても良い。本発明においては施工後の櫛目割れのないタイルが得られる。
【0010】
本発明の床材は、従来の床タイルに比べ、物性が優れ、接着剤による櫛目が生じず、施工後も快適に使用できる。また残留凹みは少なく、外観が変化せず、耐曲げ性、及び耐衝撃性が高く、剛性度も優れている。この結果、メンテナンス性も優れる。
【0011】
【実施例】
以下に実施例及び比較例を挙げて本発明について説明するが、何らこれらに限定されるものではない。
【0012】
実施例1
バンバリミキサーで、表1の実施例1のコポリエステルを除く配合のコンポジションタイル組成物を180℃で混練後、非晶質ポリエステルペレットであるポリエチレンテレフタレートのシクロヘキサンジメタノール変性体(軟化温度68℃)である表1のコポリエステル5%を同温度混練時に添加してミルロールで加熱混練後10mmのパッドを形成し、180℃で第1,第2カレンダーロールを通して圧延し、2mmのシートを形成し、これを1辺30cmの正方形に打ち抜いて床タイルを得た。尚加工助剤は安定剤である。表2に得られた床タイルの物性値を示す。
【0013】
比較例1
表1に記載の、コポリエステルを含まない従来配合のコンポジション組成物のみを使用し、実施例1と同様に床タイルを得た。表2に得られた床タイルの物性値を示す。
【0014】
【表1】

Figure 0004179822
【0015】
【表2】
Figure 0004179822
【0016】
残留凹み: JISA1454に準じた。
剛性度: 20±2℃、湿度65±10%の条件の下、オルゼン型剛性度試験機(以下、試験機と記す)、150mm直定規(JIS C型1級、以下、直定規と記す)、マイクロメーター、及び25mm×100mmの大きさに裁断した試験片を24時間養生した。次に試験機の水平、支点間距離、及び0点の各調整を行い、マイクロメーターで前記試験片の厚みを1/100mmの位まで測定した。さらに、前記試験片を試験機にセットし、偏位角度指針が所定の偏位角度に達したときの荷重目盛を読み取った。
剛性度E(kg/cm)は次式により求めた。
【0017】
E=(4×S×M×(読み値)×C)/(W×d×100×φ)
=2.445×(読み値)/d
S:支点間距離(cm)=4cm
W:試料幅(cm)=2.5cm
d:試料厚さ(cm)
M:荷重(kg)=2.0Lb
φ:荷重目盛読み取り角度(rad)=0.1047rad
C:定数=2
n=3で行い、試料3個の平均値を測定値の1桁下でJISZ8401に準じて丸めた。
【0018】
曲げ: JISA1454に準じた。
インパクト: 20±2℃、湿度65±10%の条件の下、インパクト試験機、150mm×150mmの大きさに裁断した試験片を24時間養生した。次に試験片の表面の略中心に直径75±5mmの円を描き、インパクト試験機の落下鋼球を前記試験片から400mmの高さから同試験片の略中央に落下させ、前記試験片に生じた亀裂が前記描いた円を超える亀裂が生じるまでの落下鋼球の回数をインパクト試験の値とした。
凹み: JISA1454に準じた。
【0019】
耐キャスター試験: 3mm厚の所定の形状、及び大きさのタイル、下地板(900mm×1800mmの形状、及び8mm厚のフレキシブル板)、ゴム系ラテックス形接着剤(ロイヤルセメントS、東リ製)、櫛目ごて、及びその他施工道具(100ポンドローラー)を23℃±2℃、湿度55±10%の下、24時間養生する。接着剤を櫛目ごてで塗布し、所定のオープンタイム放置後、床材の試料を前記接着剤塗布面に貼着させ、さらに、100ポンドローラーを2往復させることにより、圧着させた。その後、7日間養生した後、キャスター試験(DIN54325 Chair CasterTest)に準拠して床材に負荷をかけた。即ち、上記貼着した各床材上で鉄製脚輪(直径75mm、幅25mm)3輪に60kgの荷重をかけながら、前記脚輪を8時間正転、及び反転させた。次に鉄輪の荷重を60kgから90kgにし、さらに8時間キャスターによる負荷をかけた。かかるキャスター負荷をかけていく中、1時間毎にキャスター負荷をかけたタイル表面に1500ルックスの高演色性3A標準光源の光を直下させ、略45°の位置から斜視し、櫛目の有無を確認した。
【0020】
この結果実施例1は比較例1に対し、残凹は約1/5、剛性度も高く優れ、耐インパクト性が高く、耐曲げ性も高く、耐キャスター試験において、従来40〜45分で櫛目割れがあらわれるのに対し、本発明の床タイルは4時間経ても櫛目割れは生じなかった。
割れやキャスターによる凹みに汚れが発生しないので、メンテナンス性も良く、タイルの使用寿命を延ばす。
さらに施工後のタイルを観察しても、歩行や重量物の通過による割れはなかった。
【0021】
実施例2〜5
表3に示す配合のコンポジションタイル組成物を使用した以外は実施例1と同様にして床タイルを得た。得られた床タイルの物性値を表4に示す。
【0022】
【表3】
Figure 0004179822
【0023】
【表4】
Figure 0004179822
【0024】
【発明の効果】
櫛目割れもなく耐キャスター性も良好で施工後の床材の使用状態が良好であった。
メンテナンス性も良く、タイルの使用寿命を延ばすことができ、ランニングコストが軽減された。
残留凹み、剛性度に優れ、耐衝撃性、耐曲げ性も良好であった。
【図面の簡単な説明】
【図1】 タイル製造工程図である。
【符号の説明】
2 ペレット
4 ミルロール
5 非晶質ポリマー
9 本発明床タイル[0001]
BACKGROUND OF THE INVENTION
The present invention relates to superior floor tiles durability after construction and physical properties.
[0002]
[Prior art]
Combing is an undesirable phenomenon in which a comb mark is visible from above the flooring material when the flooring material is applied on the ground by applying an adhesive with a comb brush to the base when the flooring material is applied. In addition, there was a phenomenon in which the conventional composition tile could break at the comb due to the caster of the chair.
[0003]
[Problems to be solved by the invention]
An object of the present invention is to provide a floor tile which does not cause comb breakage and is excellent in durability and maintenance after construction.
[0004]
[Means for Solving the Problems]
The present invention relates to a matrix resin composed of polyvinyl chloride, an amorphous polymer composed of a polyester copolymer having a softening temperature within the processing temperature range of the matrix resin, and a total resin of 100 parts by weight of the matrix resin and the amorphous polymer. And 100 to 800 parts by weight of a filler, and a floor tile having a uniformly kneaded resin layer.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 illustrates the tile manufacturing process of the present invention. Pellets 2 of the matrix resin composition are put into the hopper 1 and heated and kneaded at 180 to 300 ° C. in the banbury 3. The pellets preferably have a thickness of 0.5 to 5.0 mm, more preferably 1.0 to 4.0 mm, and a diameter of 1.0 to 10.0 mm. The matrix resin corresponds to a binder at the time of tile production, and the pellet made of the matrix resin can be recycled by kneading into the composition tile (the binder is less than 30%). Moreover, the end material etc. which generate | occur | produce at the time of the tile manufacture comprised from the said pellet can be recycled similarly. Such tile recycled products can be used, and other thermoplastic resin recycled products can be used as well. PVC (polyvinyl chloride) is used as the matrix resin.
[0006]
The filler is calcium carbonate, talc, clay or the like, and preferably 100 to 800 parts by weight per 100 parts by weight of the resin.
[0007]
In the present invention, a matrix resin, an amorphous polymer that can be uniformly kneaded therein, and a filler are blended in the flooring. As this amorphous polymer, a polyester homopolymer or a copolymer is suitable.
In the present invention, the polyester copolymer is defined as one obtained by replacing ethylene glycol of polyethylene terephthalate with another diol. For example, ethylene glycol is preferably a copolymer substituted with 10 to 80% by weight, preferably 20 to 40% by weight, of cyclohexanedimethanol.
The plastic processing temperature is preferably 100 to 300 ° C., and they are kneaded and integrated. The amorphous polymer has a processing temperature within this temperature range. Incidentally, the softening temperature of amorphous polypropylene is 107 to 157 ° C., and the softening temperature of amorphous polyester is 67 to 72 ° C.
The amorphous polymer is added in an amount of 0.5 to 35% by weight, preferably 1 to 15% by weight, more preferably 1 to 12% by weight, based on the matrix resin.
As the amorphous polymer, a recycled product can be used as long as the above softening temperature condition is satisfied.
Examples of other additives include pigments, antistatic agents, processing aids such as lubricants, and the like.
[0008]
A matrix resin, an amorphous polymer, a filler, a plasticizer, a stabilizer, and other additives as necessary are kneaded with a Banbury mixer, and the resulting kneaded product is kneaded and rolled with a mill roll 4 to form a pad shape. To do. Further, the first calendar rolls 6 and 6 ′ and the second calendar rolls 7 and 7 ′ are sequentially rolled, formed into a sheet having a total thickness of 1.5 to 5 mm and cooled, and then each side is 20 to 90 cm by the tile-shaped cutting machine 8. Then, it is cut into a tile shape of preferably 20 to 50 cm to obtain the plastic floor tile 9 of the present invention.
Moreover, in this invention, it can be used also as a sheet | seat by making the composition which softens the whole composition, for example, increasing the amount of plasticizers or reducing the amount of fillers.
[0009]
Note that the pellets obtained by kneading and integrating the matrix resin and the amorphous polymer may be spread directly on the base sheet with a thickness of 2 to 15 mm, for example, directly from the hopper, and then rolled. In the present invention, a tile free of comb cracks after construction is obtained.
[0010]
The flooring of the present invention has superior physical properties compared to conventional floor tiles, does not cause combing due to adhesive, and can be used comfortably after construction. Moreover, there are few residual dents, an external appearance does not change, bending resistance and impact resistance are high, and the rigidity is also excellent. As a result, the maintainability is also excellent.
[0011]
【Example】
Hereinafter, the present invention will be described with reference to examples and comparative examples, but the present invention is not limited thereto.
[0012]
Example 1
A composition tile composition excluding the copolyester of Example 1 in Table 1 was kneaded at 180 ° C. with a Banbury mixer, and then a modified product of cyclohexanedimethanol of polyethylene terephthalate, which is an amorphous polyester pellet (softening temperature 68 ° C.). 5% of the copolyester of Table 1 is added at the same temperature kneading, and after heating and kneading with a mill roll, a 10 mm pad is formed, rolled at 180 ° C. through first and second calender rolls to form a 2 mm sheet, This was punched into a square with a side of 30 cm to obtain a floor tile. The processing aid is a stabilizer. Table 2 shows the physical property values of the floor tiles obtained.
[0013]
Comparative Example 1
Floor tiles were obtained in the same manner as in Example 1 using only the conventional composition composition containing no copolyester described in Table 1. Table 2 shows the physical property values of the floor tiles obtained.
[0014]
[Table 1]
Figure 0004179822
[0015]
[Table 2]
Figure 0004179822
[0016]
Residual dent: Conforms to JIS A 1454.
Rigidity: Under conditions of 20 ± 2 ° C. and humidity 65 ± 10%, an Olsen-type stiffness tester (hereinafter referred to as a tester), a 150 mm straight ruler (JIS C type 1 grade, hereinafter referred to as a straight ruler) The test piece cut into a size of 25 mm × 100 mm was cured for 24 hours. Next, the tester was adjusted for horizontal, fulcrum distance, and zero point, and the thickness of the test piece was measured to 1/100 mm with a micrometer. Further, the test piece was set in a testing machine, and the load scale when the deviation angle pointer reached a predetermined deviation angle was read.
The stiffness E (kg / cm) was obtained by the following equation.
[0017]
E = (4 × S × M × (reading value) × C) / (W × d 3 × 100 × φ)
= 2.445 × (reading value) / d 3
S: Distance between supporting points (cm) = 4 cm
W: Sample width (cm) = 2.5 cm
d: Sample thickness (cm)
M: Load (kg) = 2.0 Lb
φ: Load scale reading angle (rad) = 0.1047 rad
C: Constant = 2
The measurement was performed at n = 3, and the average value of three samples was rounded according to JISZ8401 one digit below the measured value.
[0018]
Bending: According to JIS A 1454.
Impact: Under conditions of 20 ± 2 ° C. and humidity 65 ± 10%, an impact tester, a test piece cut to a size of 150 mm × 150 mm was cured for 24 hours. Next, a circle with a diameter of 75 ± 5 mm is drawn at the approximate center of the surface of the test piece, and the falling steel ball of the impact tester is dropped from the height of 400 mm to the approximate center of the test piece to the test piece. The number of dropped steel balls until the crack that occurred exceeded the circle drawn was the value of the impact test.
Recess: According to JISA1454.
[0019]
Caster resistance test: 3 mm thick tile with a predetermined shape and size, base plate (900 mm × 1800 mm shape and 8 mm thick flexible plate), rubber latex adhesive (Royal Cement S, manufactured by Tori), comb Curing iron and other construction tools (100 pound rollers) under 23 ° C. ± 2 ° C. and humidity 55 ± 10% for 24 hours. Adhesive was applied with a comb iron and allowed to stand for a predetermined open time, and then a flooring sample was adhered to the adhesive application surface, and further crimped by reciprocating a 100 pound roller twice. Thereafter, after curing for 7 days, the flooring was loaded in accordance with a caster test (DIN 54325 Chair Caster Test). That is, while applying a load of 60 kg to the three steel leg rings (diameter 75 mm, width 25 mm) on each stuck flooring, the leg rings were rotated forward and inverted for 8 hours. Next, the load of the iron wheel was changed from 60 kg to 90 kg, and a load by a caster was further applied for 8 hours. While applying such caster load, light of 1500 lux high color rendering 3A standard light source is directly applied to the tile surface subjected to caster load every hour, and it is obliquely observed from a position of about 45 ° to confirm the presence or absence of a comb. did.
[0020]
As a result, Example 1 has a remnant of about 1/5 compared to Comparative Example 1, high rigidity, excellent impact resistance, high bending resistance, and in the caster test in 40-45 minutes. While cracks appeared, the floor tile of the present invention did not cause comb cracks even after 4 hours.
No dirt is generated in the cracks and dents caused by casters, so maintenance is good and the service life of the tiles is extended.
Furthermore, even after observing the tile after construction, there was no cracking due to walking or passing heavy objects.
[0021]
Examples 2-5
A floor tile was obtained in the same manner as in Example 1 except that the composition tile composition having the composition shown in Table 3 was used. Table 4 shows the physical property values of the obtained floor tiles.
[0022]
[Table 3]
Figure 0004179822
[0023]
[Table 4]
Figure 0004179822
[0024]
【The invention's effect】
There was no comb cracking, caster resistance was good, and the flooring after use was in good condition.
Good maintainability, extending the service life of the tiles and reducing running costs.
Residual dents and rigidity were excellent, and impact resistance and bending resistance were also good.
[Brief description of the drawings]
FIG. 1 is a tile manufacturing process diagram.
[Explanation of symbols]
2 Pellet 4 Mill roll 5 Amorphous polymer 9 Floor tile of the present invention

Claims (5)

ポリ塩化ビニルよりなるマトリックス樹脂に、該マトリックス樹脂の加工温度範囲内に軟化温度を有するポリエステル共重合体よりなる非晶質ポリマーと、マトリックス樹脂と非晶質ポリマーの合計樹脂100重量部に対し100から800重量部の充填材を配合し、均一混練した樹脂層を有する床タイル。A matrix resin made of polyvinyl chloride is added to an amorphous polymer made of a polyester copolymer having a softening temperature within the processing temperature range of the matrix resin, and 100 parts by weight based on 100 parts by weight of the total resin of the matrix resin and the amorphous polymer. To 800 parts by weight of a filler and a floor tile having a uniformly kneaded resin layer. 非晶質ポリマーが樹脂層全重量の1〜15%添加された請求項1の床タイル。  The floor tile according to claim 1, wherein the amorphous polymer is added in an amount of 1 to 15% of the total weight of the resin layer. ポリエステル共重合体が、ポリエチレンテレフタートのエチレングライコールを他のジオールに置換されたポリエステルである請求項1の床タイル。  The floor tile according to claim 1, wherein the polyester copolymer is a polyester obtained by replacing ethylene glycol of polyethylene terephthalate with another diol. ポリエステル共重合体がエチレングライコールがシクロヘキサンジメタノールに置換された請求項3の床タイル。  The floor tile according to claim 3, wherein the polyester copolymer has ethylene glycol replaced with cyclohexanedimethanol. マトリックス樹脂がリサイクル粉砕品を含む請求項1の床タイル。  The floor tile of claim 1, wherein the matrix resin comprises a recycled ground product.
JP2002225667A 2001-08-10 2002-08-02 Flooring Expired - Fee Related JP4179822B2 (en)

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