JP2005162965A - Decorative film - Google Patents

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JP2005162965A
JP2005162965A JP2003406964A JP2003406964A JP2005162965A JP 2005162965 A JP2005162965 A JP 2005162965A JP 2003406964 A JP2003406964 A JP 2003406964A JP 2003406964 A JP2003406964 A JP 2003406964A JP 2005162965 A JP2005162965 A JP 2005162965A
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decorative film
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polyethylene
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Kenichi Toba
健一 鳥羽
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SHINSEISHA KK
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SHINSEISHA KK
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Abstract

<P>PROBLEM TO BE SOLVED: To prepare a decorative film of excellent versatility that does not occur toxic hydrogen chloride gas, or the like, on waste incineration or in a fire, does not become a release source of dioxins, can largely decrease the addition of a plasticizer that is pointed out to disrupt the hormone actions in the bodies of animals, thus excelling in environmental protection, manifests suitable tensile strength, elongation and cutting properties as those of a decorative film made of a polyvinyl chloride resin and can have a suitable level of wetting exponent (surface tension). <P>SOLUTION: This decorative film is obtained by forming a composition comprising a polyethylene polymer and an annular olefin polymer wherein the weight ratio of the polyethylene polymer to the annular olefin polymer is 40 to 99 wt.%/1 to 60 wt.%, preferably 65 to 99 wt.%/1 to 35 wt.%. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、建築内装材等の装飾フィルム、広告看板用フィルム等の化粧フィルムに関するものである。   The present invention relates to a decorative film such as a building interior material and a decorative film such as a billboard film.

従来より、建築内装材等の室内装飾フィルム、広告看板用フィルム等の化粧フィルムは、塩化ビニル樹脂製で形成されているものが多くみられる。塩化ビニル樹脂製の化粧フィルムは、顔料の分散性,柔軟性,加工性,耐候性,表面光沢性等に優れ、適当な引張切断強さ及び伸びを有しているので、着色が容易で装飾性に優れ、またカッティング性に優れ原反フィルムを容易に所定の大きさに切断することができ、さらに寸法安定性及び耐久性に優れているからである。
しかしながら、塩化ビニル樹脂製の化粧フィルムに柔軟性を付与するために添加される可塑剤が、動物の体内のホルモン作用を攪乱し、生殖機能を阻害したり悪性腫瘍を引き起こす等の可能性があると指摘されている。また、廃棄焼却時や火災時に有毒な塩化水素ガス等を発生したりダイオキシン類等の発生源となることが指摘されている。
そこで、このような塩化ビニル樹脂製の化粧フィルムが有する問題点を解決するために、種々の技術が開発されている。
2. Description of the Related Art Conventionally, decorative films such as interior decoration films such as building interior materials and advertising billboard films are often made of a vinyl chloride resin. The decorative film made of vinyl chloride resin is excellent in pigment dispersibility, flexibility, processability, weather resistance, surface gloss, etc., and has appropriate tensile cutting strength and elongation, so it can be easily colored and decorated. This is because the raw film can be easily cut into a predetermined size and has excellent dimensional stability and durability.
However, plasticizers added to give flexibility to cosmetic films made of vinyl chloride resin may disrupt the hormonal action in the animal's body, impairing reproductive functions and causing malignant tumors. It is pointed out. In addition, it has been pointed out that toxic hydrogen chloride gas, etc. is generated during incineration or fire, and it becomes a source of dioxins.
Therefore, various techniques have been developed to solve the problems of such a vinyl chloride resin decorative film.

例えば、ポリエチレンテレフタレート(PET),ポリブチレンテレフタレート(PBT),アクリロニトリル/ブタジエン/スチレン(ABS),ポリオキシメチレン(POM),ポリメタクリル酸メチル(PMMA),ポリフェニレンエーテル(PPE),ポリエーテルエーテルケトン(PEEK)等を用いる試みがなされている。しかし、これらの樹脂で作成された化粧フィルムは、標準的な塩化ビニル樹脂製の化粧フィルムと比較して、引張切断強さが強く伸びが小さいため、柔軟性に欠けるとともにカッティング性に欠けるという問題点を有している。   For example, polyethylene terephthalate (PET), polybutylene terephthalate (PBT), acrylonitrile / butadiene / styrene (ABS), polyoxymethylene (POM), polymethyl methacrylate (PMMA), polyphenylene ether (PPE), polyether ether ketone ( Attempts have been made to use PEEK). However, the decorative film made with these resins has a problem that it lacks flexibility and cutting properties due to its high tensile cutting strength and small elongation compared to the standard vinyl chloride resin decorative film. Has a point.

また、生分解性樹脂であるヒアルロン酸化合物(HA),ポリ水酸化アルカノエート(PHA)やポリビニルアルコール(PVA)等を用いる試みもなされている。これらの樹脂は環境保全性等に優れているが、これらの樹脂で作成された化粧フィルムは、塩化ビニル樹脂製の化粧フィルムと比較して、耐候性、表面光沢性に欠けるという問題点を有している。   Attempts have also been made to use hyaluronic acid compounds (HA), polyhydroxyalkanoates (PHA), polyvinyl alcohol (PVA), etc., which are biodegradable resins. Although these resins are excellent in environmental conservation, etc., decorative films made with these resins have the problem of lack of weather resistance and surface gloss compared to decorative films made of vinyl chloride resin. doing.

そこで、これらの問題点を解決すべく、種々研究されている。廃棄焼却時や火災時に有毒な塩化水素ガス等を発生したりダイオキシン類等の発生源となる塩素を含有しないフィルムとして、例えば(特許文献1)には「非晶質環状オレフィン系重合体の全含有量が21〜95重量%、ポリプロピレン系樹脂等のポリオレフィン系重合体の全含有量が79〜5重量%であるカード用フィルム」が開示されている。
特開平9−104767号公報
Therefore, various studies have been conducted to solve these problems. As a film that does not contain chlorine that generates toxic hydrogen chloride gas or the like, or is a source of generation of dioxins at the time of waste incineration or fire, for example, (Patent Document 1) states that “all of amorphous cycloolefin polymers” A card film having a content of 21 to 95% by weight and a total content of polyolefin polymers such as polypropylene resins of 79 to 5% by weight is disclosed.
JP-A-9-104767

しかしながら上記従来の技術においては、以下のような課題を有していた。
(1)(特許文献1)に開示の技術は、プリペイドカード,キャッシュカード,クレジットカード等のカード用に好適に使用できるものなので、優れた復元性,耐屈曲性等に優れているが、化粧フィルムとして用いる場合に必要な最適な引張切断強さや伸びを有しておらず柔軟性や加工性等に欠けるという課題を有していた。具体的には、(特許文献1)の実施例1(厚さ200μm)に、伸び10〜18%が記載されているが、塩化ビニル製樹脂で形成された一般的な化粧フィルムの伸びが500%程度(厚さ100μmの場合)であるのに対して著しく小さく、柔軟性や加工性に著しく欠けるという課題を有していた。
(2)柔軟性に欠けるため、被着体の形状に応じて貼着して用いる建築内装用フィルムや広告看板用フィルム等の化粧フィルムとして用いることができないという課題を有していた。
However, the above conventional techniques have the following problems.
(1) Since the technique disclosed in (Patent Document 1) can be suitably used for cards such as prepaid cards, cash cards, and credit cards, it has excellent restoration properties, flex resistance, etc. There is a problem that the film does not have the optimum tensile cutting strength and elongation necessary for use as a film and lacks flexibility and workability. Specifically, Example 1 (thickness: 200 μm) of (Patent Document 1) describes an elongation of 10 to 18%, but the elongation of a general decorative film formed of a vinyl chloride resin is 500. % (In the case of a thickness of 100 μm), which is extremely small and has a problem that flexibility and workability are remarkably lacking.
(2) Since it lacks flexibility, it has a problem that it cannot be used as a decorative film such as a film for building interiors or a film for advertising billboards, which is used by sticking according to the shape of the adherend.

本発明は上記従来の課題を解決するもので、廃棄焼却時や火災時に有毒な塩化水素ガス等を発生したりダイオキシン類等の発生源とならず、また動物の体内のホルモン作用を攪乱すると指摘されている可塑剤の添加量を大幅に削減することができ環境保全性に優れ、また塩化ビニル樹脂製の化粧フィルムと同等かそれ以上の適当な引張切断強さ、伸び及びカッティング性を発現させることができ、柔軟性,加工性,寸法安定性,耐候性,表面光沢性等に優れ、さらに適度なぬれ指数(表面張力)を付与するので、表面の印刷性を高めるとともに他の合成樹脂との付着性を高めることができ汎用性に優れる化粧フィルムを提供することを目的とする。   The present invention solves the above-mentioned conventional problems, and it is pointed out that it does not generate toxic hydrogen chloride gas or the like at the time of waste incineration or fire, does not become a source of dioxins, and disturbs the hormonal action in the animal body. The amount of plasticizer added can be greatly reduced, and environmental protection is excellent, and appropriate tensile cutting strength, elongation, and cutting properties equivalent to or better than those made of vinyl chloride resin decorative films are exhibited. It has excellent flexibility, workability, dimensional stability, weather resistance, surface gloss, etc., and gives an appropriate wetting index (surface tension), which improves surface printability and other synthetic resins. An object of the present invention is to provide a decorative film that can enhance the adhesion of the film and is excellent in versatility.

上記従来の課題を解決するために本発明の化粧フィルムは、以下の構成を有している。
本発明の請求項1に記載の化粧フィルムは、ポリエチレン重合体と環状オレフィン重合体とを含有する組成物を形成して得られる化粧フィルムであって、前記組成物中の前記ポリエチレン重合体及び前記環状オレフィン重合体の配合比が、前記ポリエチレン重合体が40〜99wt%好ましくは65〜99wt%、前記環状オレフィン重合体が1〜60wt%好ましくは1〜35wt%である構成を有している。
この構成により、以下のような作用が得られる。
ポリエチレン重合体で形成された化粧フィルムは、引張切断強さが弱く伸びが大きいため寸法安定性やカッティング性が乏しく、また耐候性が乏しいという欠点を有している。一方、環状オレフィン重合体で形成された化粧フィルムは、引張切断強さが強く伸びが小さいため柔軟性に乏しいという欠点を有しているが、透明性や耐薬品性に優れた特性を有している。そこで、これらの長所を伸ばし短所を補完するために種々検討を行った結果、ポリエチレン重合体及び環状オレフィン重合体の配合比を、ポリエチレン重合体が40〜99wt%好ましくは65〜99wt%、環状オレフィン重合体が1〜60wt%好ましくは1〜35wt%とすることによって、以下の作用を見出した。即ち、
(1)塩化ビニル樹脂製の化粧フィルムと同等かそれ以上の適当な引張切断強さ及び伸びを発現させることができ、柔軟性,加工性,カッティング性,寸法安定性,耐候性,表面光沢性等に優れる。また、塩素を含有しないので、廃棄焼却時や火災時に有毒な塩化水素ガス等を発生したりダイオキシン類等の発生源とならず環境保全性に優れる。
(2)溶融温度又は粘度を低下させ成形加工性を改善したり柔軟性や弾性を付与する可塑剤を添加しなくても、良好な成形加工性,柔軟性等を発現させることができるので、動物の体内のホルモン作用を攪乱し生殖機能を阻害したり悪性腫瘍を引き起こす等の可能性があると指摘されている可塑剤の添加量を大幅に削減することができ環境保全性に優れる。
(3)ポリエチレン重合体及び環状オレフィン重合体が所定の配合比で配合されているので、理由は不明であるが、フィルムに適度なぬれ指数(表面張力)を付与して、表面の印刷性を高めるとともに他の合成樹脂との付着性を高め容易に積層体を形成することができ汎用性に優れる。
In order to solve the above conventional problems, the decorative film of the present invention has the following configuration.
The decorative film according to claim 1 of the present invention is a decorative film obtained by forming a composition containing a polyethylene polymer and a cyclic olefin polymer, the polyethylene polymer in the composition, and the The composition ratio of the cyclic olefin polymer is such that the polyethylene polymer is 40 to 99 wt%, preferably 65 to 99 wt%, and the cyclic olefin polymer is 1 to 60 wt%, preferably 1 to 35 wt%.
With this configuration, the following effects can be obtained.
A decorative film formed of a polyethylene polymer has the disadvantages that it has a low tensile cut strength and a large elongation, so that it has poor dimensional stability and cutting properties and poor weather resistance. On the other hand, a decorative film formed from a cyclic olefin polymer has the disadvantage of poor flexibility due to its strong tensile cutting strength and small elongation, but has excellent properties such as transparency and chemical resistance. ing. Therefore, as a result of various studies to extend these advantages and supplement the disadvantages, the blending ratio of the polyethylene polymer and the cyclic olefin polymer is 40 to 99 wt%, preferably 65 to 99 wt% for the polyethylene polymer. The following effects were found when the polymer content was 1 to 60 wt%, preferably 1 to 35 wt%. That is,
(1) Appropriate tensile cutting strength and elongation equivalent to or better than those made of vinyl chloride resin decorative films can be expressed, and flexibility, workability, cutting properties, dimensional stability, weather resistance, surface glossiness Etc. In addition, since it does not contain chlorine, it generates excellent toxic hydrogen chloride gas or other sources during disposal incineration or fire, and is not a source of dioxins, etc.
(2) Since it is possible to express good moldability, flexibility, etc. without adding a plasticizer that lowers the melting temperature or viscosity to improve moldability and imparts flexibility and elasticity, It is possible to greatly reduce the amount of plasticizers that have been pointed out to disrupt the hormonal action in the animal's body to inhibit reproductive functions or cause malignant tumors, resulting in excellent environmental conservation.
(3) Since the polyethylene polymer and the cyclic olefin polymer are blended at a predetermined blending ratio, the reason is unknown, but an appropriate wetting index (surface tension) is imparted to the film to improve the surface printability. In addition to enhancing the adhesion to other synthetic resins, it is possible to easily form a laminate and to have excellent versatility.

ここで、ポリエチレン重合体としては、短鎖,長鎖分岐の多いLDPEや直鎖状低密度ポリエチレン(LLDPE)等の低密度ポリエチレン、直鎖状の高密度ポリエチレン(HDPE)、LDPEとHDPEの中間の密度をもつ中密度ポリエチレン等の1種若しくは複数種を混合して用いることができる。
低密度ポリエチレン、中密度ポリエチレン、高密度ポリエチレン等の混合量を任意の配合比にすることによって、メルトフローレート及び密度を調整することができる。メルトフローレートは高密度ポリエチレンで小さく低密度ポリエチレンで大きく、密度は高密度ポリエチレンで大きく低密度ポリエチレンで小さいため、適量配合することによって化粧フィルムの成形性を高めることができるとともに、密度を用途に応じて最適に調整することができる。
Here, examples of the polyethylene polymer include low-density polyethylene such as LDPE and linear low-density polyethylene (LLDPE) having many short chains and long-chain branches, linear high-density polyethylene (HDPE), and intermediate between LDPE and HDPE. One kind or a plurality of kinds such as medium density polyethylene having a density of 1 can be mixed and used.
The melt flow rate and density can be adjusted by adjusting the mixing amount of low-density polyethylene, medium-density polyethylene, high-density polyethylene and the like to an arbitrary blending ratio. The melt flow rate is high density polyethylene and small and low density polyethylene is large, and the density is high density polyethylene and large and low density polyethylene is small. It can be adjusted optimally accordingly.

ポリエチレン重合体は、低密度ポリエチレン、中密度ポリエチレン、高密度ポリエチレン等を所定の配合比で混合してメルトフローレートが0.3〜8g/10分(JIS K 7210に準じ、温度190℃の条件下で10分間当たりに押し出された材料の重量)に調整されたものを用いることができる。
ポリエチレン重合体のメルトフローレートが0.3g/10分より小さくなるにつれ成形性に欠け生産性が低下する傾向がみられ、8g/10分より大きくなるにつれ成形された化粧フィルムの弾性率が低下しフィルムの腰が弱くなり汎用性が低下する傾向がみられるため、いずれも好ましくない。
The polyethylene polymer is a mixture of low density polyethylene, medium density polyethylene, high density polyethylene and the like at a predetermined blending ratio and a melt flow rate of 0.3 to 8 g / 10 minutes (according to JIS K 7210, at a temperature of 190 ° C. The weight adjusted to the weight of the material extruded per 10 minutes below can be used.
As the melt flow rate of the polyethylene polymer becomes smaller than 0.3 g / 10 min, the moldability tends to be lacking and the productivity tends to decrease, and as it becomes larger than 8 g / 10 min, the elastic modulus of the molded decorative film decreases. However, since the film tends to become weak and versatility tends to be reduced, neither is preferable.

環状オレフィン重合体としては、(a)環式炭化水素でエチレン結合をもつシクロプロペン,シクロブテン,シクロペンテン,シクロへキセン,シクロヘプテン,シクロオクテン,シクロノネン,シクロデセン等の環状オレフィンの付加重合体、(b)水素化された環状オレフィン重合体、(c)環状オレフィンとエチレン,プロピレン等のα−オレフィンとのランダム共重合体、(d)前記(a)〜(c)の重合体を不飽和カルボン酸やその誘導体等で変性したグラフト変性体等を用いることができる。
環状オレフィン重合体は、ガラス転移点が120〜170℃好ましくは140〜170℃のものが好適に用いられる。ガラス転移点が140℃より低くなるにつれ得られる化粧フィルムの寸法安定性や耐熱性が低下する傾向がみられ、特に120℃より低くなるとこの傾向が著しくなるので好ましくない。また、ガラス転移点が170℃より高くなると成形性が悪化し生産性が低下するとともに硬くなり柔軟性に欠けるため好ましくない。
Cyclic olefin polymers include: (a) cyclic olefin addition polymers of cycloolefins such as cyclopropene, cyclobutene, cyclopentene, cyclohexene, cycloheptene, cyclooctene, cyclononene, cyclodecene, etc., which are cyclic hydrocarbons and ethylene bonds; A hydrogenated cyclic olefin polymer, (c) a random copolymer of a cyclic olefin and an α-olefin such as ethylene, propylene, (d) the polymers (a) to (c) described above with an unsaturated carboxylic acid or Graft modified products modified with derivatives thereof and the like can be used.
As the cyclic olefin polymer, those having a glass transition point of 120 to 170 ° C, preferably 140 to 170 ° C are suitably used. As the glass transition point becomes lower than 140 ° C., the dimensional stability and heat resistance of the resulting decorative film tend to be lowered. Particularly, when the temperature is lower than 120 ° C., this tendency becomes remarkable, which is not preferable. On the other hand, if the glass transition point is higher than 170 ° C., the moldability deteriorates, the productivity is lowered, and it becomes hard and lacks flexibility.

環状オレフィン重合体の配合比が、1wt%より少なくなるにつれ、塩化ビニル樹脂製の化粧フィルムと比較して引張切断強さが小さく、かつ、伸びが増大しカッティング性等の加工性や寸法安定性等が低下する傾向がみられ、35wt%より多くなるにつれ、引張切断強さが大きく、かつ、伸びが低下し柔軟性等が低下する傾向がみられる。特に、60wt%より多くなると、この傾向が著しくなるので好ましくない。   As the compounding ratio of the cyclic olefin polymer is less than 1 wt%, the tensile cutting strength is smaller and the elongation is increased compared to the decorative film made of vinyl chloride resin, and the workability and dimensional stability such as cutting properties are increased. Etc. tend to be reduced, and as it exceeds 35 wt%, the tensile cut strength tends to be large, and the elongation and the flexibility tend to decrease. In particular, if it exceeds 60 wt%, this tendency becomes remarkable, which is not preferable.

化粧フィルムの厚さとしては、5〜250μmに形成されたものが好適に用いられる。厚さが5μmより薄くなるにつれ使用時や生産時に化粧フィルムが絡み易く使用性や生産性が低下し、また使用時に広告用看板や内装材等として貼着する際に皺が寄り易く作業性が低下する傾向がみられ、250μmより厚くなるにつれ硬く柔軟性に欠けてくるとともに単位面積当りの重量が増加するため広告用看板や内装材等として貼着する際に作業者の負担が大きく取扱性に欠け、また製造に際して原反フィルムを切断し難く生産性等が低下する傾向がみられるため好ましくない。   As the thickness of the decorative film, one having a thickness of 5 to 250 μm is preferably used. As the thickness becomes thinner than 5μm, the decorative film tends to get entangled during use and production, and the usability and productivity are reduced. It tends to decrease, and as it becomes thicker than 250 μm, it becomes harder and less flexible, and the weight per unit area increases, so the burden on the operator is large when sticking as advertising signs or interior materials, etc. In addition, it is not preferable because it is difficult to cut the raw film during production and the productivity tends to decrease.

ポリエチレン重合体と環状オレフィン重合体の組成物に、酸化防止剤,光安定剤,難燃剤等の添加剤を添加することもできる。
酸化防止剤としては、フェノール系,リン系,イオウ系等の種々の酸化防止剤を用いることができる。酸化防止剤を添加することにより、化粧フィルムの製造時並びに使用時に空気中の酸素による酸化劣化や焼けを防止することができる。
光安定剤としては、ベンゾトリアゾール系,ベンゾフェノン系,サリシレート系等の紫外線吸収剤、ヒンダードアミン系光安定剤等を用いることができる。光安定剤の添加により、化粧フィルムの光酸化劣化を防止することができる。
難燃剤としては、水酸化アルミニウム,水酸化マグネシウム等の無機系難燃剤、リン酸エステル等の有機系難燃剤等を用いることができる。これにより、化粧フィルムの燃焼を抑制することができる。
その他の添加剤として、熱安定剤、核剤、抗菌・防かび剤、帯電防止剤、滑り剤等を添加することもできる。
Additives such as antioxidants, light stabilizers, and flame retardants may be added to the composition of the polyethylene polymer and the cyclic olefin polymer.
As the antioxidant, various antioxidants such as phenol, phosphorus and sulfur can be used. By adding an antioxidant, it is possible to prevent oxidative deterioration and burning due to oxygen in the air during production and use of the decorative film.
As the light stabilizer, ultraviolet absorbers such as benzotriazole, benzophenone, and salicylate, hindered amine light stabilizers, and the like can be used. Addition of the light stabilizer can prevent the photo-oxidative deterioration of the decorative film.
As the flame retardant, an inorganic flame retardant such as aluminum hydroxide or magnesium hydroxide, an organic flame retardant such as phosphate ester, or the like can be used. Thereby, combustion of a decorative film can be suppressed.
As other additives, heat stabilizers, nucleating agents, antibacterial / antifungal agents, antistatic agents, slipping agents, and the like can be added.

酸化防止剤,光安定剤,難燃剤等の添加剤の合計の添加量は、ポリエチレン重合体及び環状オレフィン重合体を含有する組成物100重量部に対し、1〜20重量部が好適に用いられる。添加量が1重量部より少なくなるにつれ、添加剤の添加効果が得られず種々の特性が向上され難い傾向がみられ、20重量部より多くなるにつれ製造時に成形性等が低下する傾向がみられるため、いずれも好ましくない。   The total amount of additives such as antioxidants, light stabilizers and flame retardants is preferably 1 to 20 parts by weight per 100 parts by weight of the composition containing the polyethylene polymer and the cyclic olefin polymer. . As the amount added is less than 1 part by weight, the effect of adding the additive cannot be obtained and various characteristics tend to be difficult to improve. As the amount added exceeds 20 parts by weight, the moldability and the like tend to decrease during production. Therefore, neither is preferable.

また、必要に応じて、顔料又は染料からなる着色剤を添加して必要な色彩をもたせることもできる。用途に応じて、透明、不透明な着色が用いられるが、一般的には、被着体の表面を隠蔽することが必要であり、不透明に着色される。
着色剤としては、チタン白、亜鉛華、弁柄、朱、群青、コバルトブルー、チタン黄、カーボンブラック等の無機顔料、イソインドリノン、バンザイエローA、キナクリドン、パーマネントレッド4R、フタロシアニンブルー等の有機顔料あるいは染料、アルミニウム、真珠等の金属顔料、二酸化チタン被覆雲母、塩基性炭酸亜鉛等、の箔粉からなる真珠光沢顔料等が用いられる。また、必要に応じて、無機充填剤を添加してもよく、炭酸カルシウム、硫酸バリウム、クレー、タルク、酸化ケイ素、酸化アルミニウム等の粉末等が挙げられる。
Further, if necessary, a colorant composed of a pigment or a dye can be added to give a necessary color. Depending on the application, transparent and opaque coloring may be used, but generally it is necessary to conceal the surface of the adherend and it is colored opaque.
Examples of colorants include inorganic pigments such as titanium white, zinc white, petal, vermilion, ultramarine, cobalt blue, titanium yellow, and carbon black, and organic such as isoindolinone, banza yellow A, quinacridone, permanent red 4R, and phthalocyanine blue. A pigment or dye, a metallic pigment such as aluminum or pearl, a pearlescent pigment made of foil powder such as titanium dioxide-coated mica, basic zinc carbonate, or the like is used. Moreover, you may add an inorganic filler as needed, and powders, such as calcium carbonate, barium sulfate, clay, talc, silicon oxide, aluminum oxide, etc. are mentioned.

化粧フィルムは、種々の製膜法によって成形することができ、カレンダフィルム、キャストフィルム、Tダイフィルム、インフレーションフィルム等として提供することができる。   The decorative film can be formed by various film forming methods, and can be provided as a calendar film, a cast film, a T-die film, an inflation film, and the like.

化粧フィルムは、壁仕上げ材や床仕上げ材等の建築内装材等の装飾フィルム、屋外や屋内に設置する懸垂幕や横断幕,看板等に被着させて用いる広告看板用フィルム等に用いられる。表面に印刷用インクが定着されるインク受容層を形成することにより、インクジェット印刷等の各種印刷に好適な化粧フィルムを製造することができる。   The decorative film is used as a decorative film such as a building interior material such as a wall finishing material or a floor finishing material, an advertising billboard film used by being attached to a banner or banner installed outdoors or indoors, a signboard, or the like. A decorative film suitable for various printing such as ink jet printing can be produced by forming an ink receiving layer on which printing ink is fixed.

本発明の請求項2に記載の発明は、請求項1に記載の化粧フィルムであって、前記ポリエチレン重合体及び前記環状オレフィン重合体の混合物100重量部に対し、1〜50重量部のポリプロピレン、ポリブチレンテレフタレート,ポリアリレート等の芳香族ポリエステル、変性ポリフェニレンエーテル,ポリエーテルサルホン,ポリサルホン等の非晶性熱可塑性樹脂、超高分子量ポリエチレン等の内いずれか1種以上の熱可塑性樹脂が配合された構成を有している。
この構成により、請求項1で得られる作用に加え、以下のような作用が得られる。
(1)ポリブチレンテレフタレート,ポリアリレート等の芳香族ポリエステル、変性ポリフェニレンエーテル,ポリエーテルサルホン,ポリサルホン等の非晶性熱可塑性樹脂、超高分子量ポリエチレン等のエンジニアリング樹脂やポリプロピレン等の熱可塑性樹脂が配合されているので、引張切断強さや表面張力をほとんど変えずに伸びを抑え寸法安定性を向上させることができるとともに、柔軟性,加工性,カッティング性,寸法安定性等の諸特性を要求される特性に適合させることができ自在性に優れる。
(2)耐熱性を付与することができる他、配合された熱可塑性樹脂の特性に応じて、自己消火性を付与して難燃性を高めたり、耐薬品性、耐熱老化性、耐候性、耐磨耗性等を付与して付加価値を高めることができる。具体的には、ポリブチレンテレフタレート,ポリアリレート等の芳香族ポリエステルを配合することにより耐熱性、難燃性、耐候性等を付与することができ、変性ポリフェニレンエーテル,ポリエーテルサルホン,ポリサルホン等の非晶性熱可塑性樹脂を配合することにより耐熱性、難燃性、耐薬品性等を付与することができ、超高分子量ポリエチレン等のエンジニアリング樹脂を配合することにより耐熱性、耐薬品性、耐磨耗性等を高めることができ、ポリプロピレンを配合することにより耐熱性を付与するとともに比重を小さくし軽量化することができる。
Invention of Claim 2 of this invention is a decorative film of Claim 1, Comprising: 1-50 weight part polypropylene with respect to 100 weight part of the mixture of the said polyethylene polymer and the said cyclic olefin polymer, One or more of thermoplastic resins such as aromatic polyesters such as polybutylene terephthalate and polyarylate, amorphous thermoplastic resins such as modified polyphenylene ether, polyether sulfone and polysulfone, and ultrahigh molecular weight polyethylene are blended. It has a configuration.
With this configuration, in addition to the operation obtained in the first aspect, the following operation can be obtained.
(1) Aromatic polyesters such as polybutylene terephthalate and polyarylate, amorphous thermoplastic resins such as modified polyphenylene ether, polyether sulfone and polysulfone, engineering resins such as ultra-high molecular weight polyethylene, and thermoplastic resins such as polypropylene As it is blended, it can suppress elongation and improve dimensional stability with almost no change in tensile cutting strength and surface tension, and is required to have various characteristics such as flexibility, workability, cutting performance, and dimensional stability. It can be adapted to the characteristics of the machine and has excellent flexibility.
(2) In addition to being able to impart heat resistance, depending on the characteristics of the blended thermoplastic resin, self-extinguishing properties are given to increase flame retardancy, chemical resistance, heat aging resistance, weather resistance, Added value can be increased by imparting wear resistance and the like. Specifically, heat resistance, flame retardancy, weather resistance, etc. can be imparted by blending aromatic polyesters such as polybutylene terephthalate and polyarylate, such as modified polyphenylene ether, polyether sulfone and polysulfone. By adding amorphous thermoplastic resin, heat resistance, flame resistance, chemical resistance, etc. can be imparted, and by adding engineering resin such as ultra-high molecular weight polyethylene, heat resistance, chemical resistance, resistance Abrasion properties and the like can be improved, and by blending polypropylene, heat resistance can be imparted and specific gravity can be reduced to reduce weight.

ここで、ポリブチレンテレフタレート,ポリアリレート等の芳香族ポリエステル、変性ポリフェニレンエーテル,ポリエーテルサルホン,ポリサルホン等の非晶性熱可塑性樹脂、超高分子量ポリエチレン等のエンジニアリング樹脂やポリプロピレン等の熱可塑性樹脂の内いずれか1種以上の配合量が、ポリエチレン重合体及び環状オレフィン重合体の混合物100重量部に対し1重量部より少なくなるにつれ、芳香族ポリエステル、非晶性熱可塑性樹脂、エンジニアリング樹脂等の添加効果が現れず硬度、引張切断強さ及び伸び等を調節することが困難になるとともに耐熱性等を付与することができなくなる傾向がみられ、50重量部より多くなるにつれ硬度、引張切断強さが大きくなる一方で伸びが低下し、柔軟性が低下する傾向がみられるため好ましくない。   Here, aromatic polyesters such as polybutylene terephthalate and polyarylate, amorphous thermoplastic resins such as modified polyphenylene ether, polyether sulfone and polysulfone, engineering resins such as ultra-high molecular weight polyethylene, and thermoplastic resins such as polypropylene Addition of aromatic polyester, amorphous thermoplastic resin, engineering resin, etc. as the blending amount of any one or more of them becomes less than 1 part by weight with respect to 100 parts by weight of the mixture of polyethylene polymer and cyclic olefin polymer There is a tendency that it becomes difficult to adjust the hardness, tensile cutting strength, elongation, etc. without any effect, and there is a tendency to be unable to impart heat resistance, etc. Hardness, tensile cutting strength as it exceeds 50 parts by weight However, there is a tendency for elongation to decrease and flexibility to decrease Undesirable since.

本発明の請求項3に記載の発明は、請求項1又は2に記載の化粧フィルムであって、前記ポリエチレン重合体及び前記環状オレフィン重合体の混合物100重量部に対し、0.0005〜10重量部のブロッキング防止剤が配合された構成を有している。
この構成により、請求項1又は2で得られる作用に加え、以下のような作用が得られる。
(1)ポリエチレン重合体及び環状オレフィン重合体の混合物100重量部に対し、0.0005〜10重量部のブロッキング防止剤が配合されているので、保管時等に化粧フィルム同士が接着するブロッキングの発生を抑制することができ保管性に優れる。
Invention of Claim 3 of this invention is a decorative film of Claim 1 or 2, Comprising: 0.0005-10 weight with respect to 100 weight part of the mixture of the said polyethylene polymer and the said cyclic olefin polymer. Part of the antiblocking agent is mixed.
With this configuration, in addition to the operation obtained in the first or second aspect, the following operation can be obtained.
(1) Since 0.0005 to 10 parts by weight of an antiblocking agent is blended with 100 parts by weight of the mixture of polyethylene polymer and cyclic olefin polymer, the occurrence of blocking where the decorative films adhere to each other during storage, etc. Can be suppressed, and the storage property is excellent.

ここで、ブロッキング防止剤の配合量が、ポリエチレン重合体及び環状オレフィン重合体の混合物100重量部に対し0.0005重量部より少なくなるにつれ、製造時にブロッキング防止剤を混練する経費が増加するだけでブロッキング防止効果が小さく、配合量が10重量部より多くなるにつれ、化粧フィルムの表面に凹凸が多く形成され平滑性や表面光沢性が低下する傾向がみられるため、いずれも好ましくない。   Here, as the blending amount of the anti-blocking agent is less than 0.0005 parts by weight with respect to 100 parts by weight of the mixture of the polyethylene polymer and the cyclic olefin polymer, the cost of kneading the anti-blocking agent at the time of production only increases. Since the anti-blocking effect is small and the blending amount is more than 10 parts by weight, both the surface of the decorative film are more uneven and the smoothness and the surface gloss tend to be lowered.

ブロッキング防止剤としては、酸化ケイ素(天然及び合成シリカを含む)、炭酸カルシウム、タルク(ケイ酸マグネシウム)、ケイ酸アルミニウム、カルシウムシリケート、珪藻土、カオリン(陶土)、酸化アルミニウム、酸化チタン、酸化マグネシウム、酸化亜鉛、炭酸マグネシウム、硫酸カルシウム、硫酸バリウム等の無機系のブロッキング防止剤、脂肪酸アミド系滑剤、高級脂肪酸ポリビニルエステル、n−オクタデシルウレア、N,N'−ジオレイルオキサアミド、N−エタノールステアリン酸アミド、ジカルボン酸エステルアミド等の有機系ブロッキング防止剤を用いることができる。これらは、混合して用いることもできる。なかでも球形粒子状の無機系ブロッキング防止剤が好適に用いられる。分散性に優れるとともに粒子の形状や粒径を整えるのが容易だからである。   Anti-blocking agents include silicon oxide (including natural and synthetic silica), calcium carbonate, talc (magnesium silicate), aluminum silicate, calcium silicate, diatomaceous earth, kaolin (porcelain), aluminum oxide, titanium oxide, magnesium oxide, Inorganic antiblocking agents such as zinc oxide, magnesium carbonate, calcium sulfate, barium sulfate, fatty acid amide lubricant, higher fatty acid polyvinyl ester, n-octadecyl urea, N, N'-dioleyl oxaamide, N-ethanol stearic acid Organic blocking inhibitors such as amides and dicarboxylic ester amides can be used. These can also be mixed and used. Among them, a spherical particle-like inorganic antiblocking agent is preferably used. This is because it is excellent in dispersibility and it is easy to adjust the shape and particle size of the particles.

ブロッキング防止剤の平均粒子径としては、0.3〜20μmのものが好ましく、0.5〜15μmのものがより好適である。平均粒子径が0.5μmより小さくなるにつれ、凝集性が強く化粧フィルムに均一に分散され難いため局所的にブロッキングが発生し易くなる傾向がみられ、平均粒子径が15μmより大きくなるにつれ、フィルム表面にブロッキング防止剤の粒子が現れ表面の凹凸が大きく平滑性や表面光沢性が低下する傾向がみられる。特に、平均粒子径が0.3μmより小さくなるか20μmより大きくなると、これらの傾向が著しくなるため、いずれも好ましくない。   The average particle size of the anti-blocking agent is preferably from 0.3 to 20 μm, more preferably from 0.5 to 15 μm. As the average particle size becomes smaller than 0.5 μm, the cohesive property is strong and it is difficult to uniformly disperse in the decorative film, so that there is a tendency for local blocking to occur, and as the average particle size becomes larger than 15 μm, the film Particles of the antiblocking agent appear on the surface, and the surface irregularities are large, and there is a tendency that the smoothness and surface glossiness are lowered. In particular, when the average particle size is smaller than 0.3 μm or larger than 20 μm, these tendencies become remarkable, so that neither is preferable.

以上のように、本発明の化粧フィルムによれば、以下のような有利な効果が得られる。
請求項1に記載の発明によれば、
(1)ポリエチレン重合体及び環状オレフィン重合体の配合比が、ポリエチレン重合体が40〜99wt%好ましくは65〜99wt%、環状オレフィン重合体が1〜60wt%好ましくは1〜35wt%であるから、塩化ビニル樹脂製の化粧フィルムと同等かそれ以上の適当な引張切断強さ及び伸びを発現させることができ、柔軟性,加工性,カッティング性,寸法安定性,耐候性,表面光沢性等に優れた化粧フィルムを提供することができる。また、塩素を含有しないので、廃棄焼却時や火災時に有毒な塩化水素ガス等を発生したりダイオキシン類等の発生源とならず環境保全性に優れた化粧フィルムを提供することができる。
(2)溶融温度又は粘度を低下させ成形加工性を改善したり柔軟性や弾性を付与する可塑剤を添加しなくても、良好な成形加工性,柔軟性等を発現させることができるので、動物の体内のホルモン作用を攪乱し生殖機能を阻害したり悪性腫瘍を引き起こす等の可能性があると指摘されている可塑剤の添加量を大幅に削減することができ環境保全性に優れた化粧フィルムを提供することができる。
(3)ポリエチレン重合体及び環状オレフィン重合体が所定の配合比で配合されているので、フィルムに適度なぬれ指数(表面張力)を付与して表面の印刷性を高めるとともに他の合成樹脂との付着性を高めることができ汎用性に優れる。
As described above, according to the decorative film of the present invention, the following advantageous effects can be obtained.
According to the invention of claim 1,
(1) Since the blending ratio of the polyethylene polymer and the cyclic olefin polymer is 40 to 99 wt%, preferably 65 to 99 wt% for the polyethylene polymer, and 1 to 60 wt%, preferably 1 to 35 wt% for the cyclic olefin polymer. Appropriate tensile cutting strength and elongation equivalent to or better than those made of vinyl chloride resin decorative film can be expressed, and excellent in flexibility, workability, cutting performance, dimensional stability, weather resistance, surface gloss, etc. A decorative film can be provided. In addition, since it does not contain chlorine, it is possible to provide a cosmetic film excellent in environmental conservation because it generates toxic hydrogen chloride gas or the like during disposal incineration or fire, and does not become a source of dioxins.
(2) Since it is possible to express good moldability, flexibility, etc. without adding a plasticizer that lowers the melting temperature or viscosity to improve moldability and imparts flexibility and elasticity, Cosmetics with excellent environmental conservation that can greatly reduce the amount of plasticizers that have been pointed out to disrupt the hormonal action in animals and inhibit reproductive functions or cause malignant tumors. A film can be provided.
(3) Since the polyethylene polymer and the cyclic olefin polymer are blended at a predetermined blending ratio, an appropriate wetting index (surface tension) is imparted to the film to enhance the surface printability, and with other synthetic resins. Adhesiveness can be increased, and versatility is excellent.

請求項2に記載の発明によれば、請求項1の効果に加え、
(1)引張切断強さや表面張力をほとんど変えずに伸びを抑え寸法安定性を向上させることができるとともに、柔軟性,加工性,カッティング性,寸法安定性等の諸特性を要求される特性に適合させることができ自在性に優れた化粧フィルムを提供することができる。
(2)耐熱性を付与することができる他、配合された熱可塑性樹脂の特性に応じて、自己消火性を付与して難燃性を高めたり、耐薬品性、耐熱老化性、耐候性、耐磨耗性等を付与することができ付加価値の高い化粧フィルムを提供することができる。
According to invention of Claim 2, in addition to the effect of Claim 1,
(1) It is possible to suppress elongation and improve dimensional stability with almost no change in tensile cutting strength and surface tension, and to achieve required characteristics such as flexibility, workability, cutting performance, and dimensional stability. A decorative film that can be adapted and has excellent flexibility can be provided.
(2) In addition to being able to impart heat resistance, depending on the characteristics of the blended thermoplastic resin, self-extinguishing properties are given to increase flame retardancy, chemical resistance, heat aging resistance, weather resistance, A decorative film with high added value can be provided that can be provided with wear resistance and the like.

請求項3に記載の発明によれば、請求項1又は2の効果に加え、
(1)ポリエチレン重合体及び環状オレフィン重合体の混合物100重量部に対し、0.0005〜10重量部のブロッキング防止剤が配合されているので、保管時等に化粧フィルム同士が接着するブロッキングの発生を抑制することができ保管性に優れた化粧フィルムを提供することができる。
According to invention of Claim 3, in addition to the effect of Claim 1 or 2,
(1) Since 0.0005 to 10 parts by weight of an antiblocking agent is blended with 100 parts by weight of the mixture of polyethylene polymer and cyclic olefin polymer, the occurrence of blocking where the decorative films adhere to each other during storage, etc. It is possible to provide a decorative film having excellent storage properties.

以下、本発明を実施例により具体的に説明する。なお、本発明はこれらの実施例に限定されるものではない。   Hereinafter, the present invention will be specifically described by way of examples. The present invention is not limited to these examples.

(実施例1)
密度0.910〜0.925g/cm、メルトフローレート(以下、MFRという)0.5〜8g(JIS K 7210に準じて温度190℃,荷重21.18Nで測定)の低密度ポリエチレン(LDPE)(LG石油化学製)52重量部と、密度0.941〜0.965g/cm、MFR0.02〜0.3g(JIS K 7210に準じて温度190℃,荷重21.18Nで測定)の高密度ポリエチレン(HDPE)(LG石油化学製)22重量部と、密度1.00〜1.20g/cm、MFR5〜30g(JIS K 7210に準じて温度260℃,荷重21.18Nで測定)の環状オレフィン重合体(一雄PLATECH製)13重量部と、ブロッキング防止剤として酸化ケイ素(商品名:シルトンPF−6,水沢化学工業(株)製)6重量部と、酸化防止剤としてフェノール系酸化防止剤のオクタデシル−3−(3,5−ジ−t−ブチル−4−ヒドロキシフェニル)プロピオネート(商品名:イルガノックス1076,日本チバガイギー(株)製)4重量部と、紫外線吸収剤(韓国LG化学社、品名:UV327)3重量部からなる組成物を、150℃に設定されたTダイを装着した押出機に供給し、溶融混練して押し出し成形した。次いで、表面温度40℃に設定された巻取りロールで冷却し、厚さ100μmの実施例1の化粧フィルムを得た。
(Example 1)
Low density polyethylene (LDPE) having a density of 0.910 to 0.925 g / cm 3 and a melt flow rate (hereinafter referred to as MFR) of 0.5 to 8 g (measured at a temperature of 190 ° C. and a load of 21.18 N according to JIS K 7210). ) (Made by LG Petrochemical Co., Ltd.) 52 parts by weight, density 0.941 to 0.965 g / cm 3 , MFR 0.02 to 0.3 g (measured at a temperature of 190 ° C. and a load of 21.18 N according to JIS K 7210) High-density polyethylene (HDPE) (manufactured by LG Petrochemical) 22 parts by weight, density 1.00-1.20 g / cm 3 , MFR 5-30 g (measured according to JIS K 7210 at a temperature of 260 ° C. and a load of 21.18 N) 13 parts by weight of a cyclic olefin polymer (manufactured by Kazuo PLATECH) and silicon oxide (trade name: Shilton PF-6, Mizusawa Chemical Industries, Ltd. as an anti-blocking agent) )) 6 parts by weight, and phenolic antioxidant octadecyl-3- (3,5-di-t-butyl-4-hydroxyphenyl) propionate (trade name: Irganox 1076, Nippon Ciba Geigy ( Co., Ltd.) 4 parts by weight and a composition comprising 3 parts by weight of an ultraviolet absorber (Korea LG Chemical Co., Ltd., product name: UV327) is supplied to an extruder equipped with a T die set at 150 ° C. and melt-kneaded. And extruded. Subsequently, it cooled with the winding roll set to the surface temperature of 40 degreeC, and the decorative film of Example 1 of thickness 100 micrometers was obtained.

(実施例2)
実施例1と同様の低密度ポリエチレン45重量部、高密度ポリエチレン20重量部、環状オレフィン重合体13重量部、ブロッキング防止剤6重量部、酸化防止剤4重量部、紫外線吸収剤3重量部に、ポリブチレンテレフタレート(PBT)(商品名:トレコン1401−X−06、東レ製)9重量部を混合し、単軸押出し機で150℃で溶融混練し冷却しペレット化した。
次に、得られたペレットを150℃に設定されたTダイを装着した押出機に供給し、溶融混練して押し出し成形した。次いで、表面温度40℃に設定された巻取りロールで冷却し、厚さ100μmの実施例2の化粧フィルムを得た。
(Example 2)
In the same manner as in Example 1, 45 parts by weight of low density polyethylene, 20 parts by weight of high density polyethylene, 13 parts by weight of cyclic olefin polymer, 6 parts by weight of anti-blocking agent, 4 parts by weight of antioxidant, 3 parts by weight of UV absorber, 9 parts by weight of polybutylene terephthalate (PBT) (trade name: Toraycon 1401-X-06, manufactured by Toray Industries, Inc.) was mixed, melt-kneaded at 150 ° C. with a single screw extruder, cooled and pelletized.
Next, the obtained pellets were supplied to an extruder equipped with a T die set at 150 ° C., and melt-kneaded and extruded. Subsequently, it cooled with the winding roll set to the surface temperature of 40 degreeC, and the decorative film of Example 2 with a thickness of 100 micrometers was obtained.

(実施例3)
実施例1と同様の低密度ポリエチレン48重量部、高密度ポリエチレン23重量部、環状オレフィン重合体7重量部、ブロッキング防止剤6重量部、酸化防止剤4重量部、紫外線吸収剤3重量部に、ポリサルホン(PSU)(商品名:ユーデルP−1700、AMOCO社製)9重量部を混合し、単軸押出し機で150℃で溶融混練し冷却しペレット化した。
次に、得られたペレットを150℃に設定されたTダイを装着した押出機に供給し、溶融混練して押し出し成形した。次いで、表面温度40℃に設定された巻取りロールで冷却し、厚さ100μmの実施例3の化粧フィルムを得た。
(Example 3)
In the same manner as in Example 1, 48 parts by weight of low density polyethylene, 23 parts by weight of high density polyethylene, 7 parts by weight of cyclic olefin polymer, 6 parts by weight of anti-blocking agent, 4 parts by weight of antioxidant, 3 parts by weight of UV absorber, 9 parts by weight of polysulfone (PSU) (trade name: Udel P-1700, manufactured by AMOCO) was mixed, melt-kneaded at 150 ° C. with a single screw extruder, cooled and pelletized.
Next, the obtained pellets were supplied to an extruder equipped with a T die set at 150 ° C., and melt-kneaded and extruded. Subsequently, it cooled with the winding roll set to the surface temperature of 40 degreeC, and the decorative film of Example 3 of thickness 100 micrometers was obtained.

(実施例4)
実施例1と同様の低密度ポリエチレン45重量部、高密度ポリエチレン15重量部、環状オレフィン重合体7重量部、ブロッキング防止剤6重量部、酸化防止剤4重量部、紫外線吸収剤3重量部に、ポリプロピレン(PP)(商品名:ハイポールF300、三井化学製)20重量部を混合し、単軸押出し機で150℃で溶融混練し冷却しペレット化した。
次に、得られたペレットを150℃に設定されたTダイを装着した押出機に供給し、溶融混練して押し出し成形した。次いで、表面温度40℃に設定された巻取りロールで冷却し、厚さ100μmの実施例4の化粧フィルムを得た。
Example 4
As in Example 1, 45 parts by weight of low density polyethylene, 15 parts by weight of high density polyethylene, 7 parts by weight of cyclic olefin polymer, 6 parts by weight of antiblocking agent, 4 parts by weight of antioxidant, 3 parts by weight of UV absorber, 20 parts by weight of polypropylene (PP) (trade name: Hipole F300, manufactured by Mitsui Chemicals) was mixed, melt-kneaded at 150 ° C. with a single screw extruder, cooled and pelletized.
Next, the obtained pellets were supplied to an extruder equipped with a T die set at 150 ° C., and melt-kneaded and extruded. Subsequently, it cooled with the winding roll set to the surface temperature of 40 degreeC, and the decorative film of Example 4 with a thickness of 100 micrometers was obtained.

(実施例5)
実施例1と同様の低密度ポリエチレン40重量部、高密度ポリエチレン25重量部、環状オレフィン重合体13重量部、ブロッキング防止剤6重量部、酸化防止剤4重量部、紫外線吸収剤3重量部に、超高分子量ポリエチレン(UHPE)(商品名:ハイゼックスミリオン240M、三井化学製)9重量部を混合し、単軸押出し機で150℃で溶融混練し冷却しペレット化した。
次に、得られたペレットを150℃に設定されたTダイを装着した押出機に供給し、溶融混練して押し出し成形した。次いで、表面温度40℃に設定された巻取りロールで冷却し、厚さ100μmの実施例5の化粧フィルムを得た。
実施例1乃至5の化粧フィルムの組成物の配合量(重量部)を(表1)に示す。
(Example 5)
In the same manner as in Example 1, 40 parts by weight of low density polyethylene, 25 parts by weight of high density polyethylene, 13 parts by weight of cyclic olefin polymer, 6 parts by weight of anti-blocking agent, 4 parts by weight of antioxidant, 3 parts by weight of UV absorber, 9 parts by weight of ultra high molecular weight polyethylene (UHPE) (trade name: Hi-Zex Million 240M, manufactured by Mitsui Chemicals) was mixed, melt-kneaded at 150 ° C. with a single screw extruder, cooled and pelletized.
Next, the obtained pellets were supplied to an extruder equipped with a T die set at 150 ° C., and melt-kneaded and extruded. Subsequently, it cooled with the winding roll set to the surface temperature of 40 degreeC, and the decorative film of Example 5 of thickness 100 micrometers was obtained.
The amount (parts by weight) of the decorative film compositions of Examples 1 to 5 is shown in Table 1.

Figure 2005162965
Figure 2005162965

(比較例1)
実施例1で用いた低密度ポリエチレンを厚さ100μmに製膜したものを比較例1の化粧フィルムとした。
(比較例2)
実施例1で用いた高密度ポリエチレンを厚さ100μmに製膜したものを比較例2の化粧フィルムとした。
(比較例3)
実施例1で用いた環状オレフィン重合体を厚さ100μmに製膜したものを比較例3の化粧フィルムとした。
(Comparative Example 1)
The low-density polyethylene used in Example 1 having a thickness of 100 μm was used as a decorative film of Comparative Example 1.
(Comparative Example 2)
The decorative film of Comparative Example 2 was obtained by forming the high-density polyethylene used in Example 1 into a film having a thickness of 100 μm.
(Comparative Example 3)
A decorative film of Comparative Example 3 was obtained by forming the cyclic olefin polymer used in Example 1 into a film having a thickness of 100 μm.

(フィルムの引張切断強さ及び伸びの評価)
得られた化粧フィルムの引張切断強さ及び伸びをJIS K 6732に準じた方法で測定・算出し、表面張力をJIS K 6768に準じた方法で測定した。結果を(表2)に示す。なお、MDはフィルムの長手方向(巻取り方向)と平行な方向に荷重を加えた場合を示し、TDはフィルムの長手方向と直交する方向に荷重を加えた場合を示す。(表2)に示すものは、MD・TD別々に9個の測定値及び算出値の中から大小それぞれ2個の値を除き、残りの5個から算出した平均値である。
また、参考のために、(表3)に標準的な塩化ビニル樹脂製フィルム(厚さ100μm)の引張切断強さ及び伸びの測定結果を示す。
(Evaluation of tensile cutting strength and elongation of film)
The tensile cut strength and elongation of the obtained decorative film were measured and calculated by a method according to JIS K 6732, and the surface tension was measured by a method according to JIS K 6768. The results are shown in (Table 2). MD indicates a case where a load is applied in a direction parallel to the longitudinal direction (winding direction) of the film, and TD indicates a case where a load is applied in a direction orthogonal to the longitudinal direction of the film. What is shown in (Table 2) is an average value calculated from the remaining five values by excluding two values of large and small from nine measured values and calculated values separately for MD and TD.
For reference, (Table 3) shows the measurement results of tensile cut strength and elongation of a standard vinyl chloride resin film (thickness: 100 μm).

Figure 2005162965
Figure 2005162965

Figure 2005162965
Figure 2005162965

以上の測定の結果、実施例1の化粧フィルムは、(表2)に示すように、引張切断強さが比較例1及び2より大きく比較例3よりも小さな値を示し、伸びが比較例1及び2より小さく比較例3よりも大きな値を示し、(表3)に示す塩化ビニル樹脂製フィルムとほぼ同等の引張切断強さ及び伸びを有していることがわかった。従って、本実施例によれば、塩化ビニル樹脂製の化粧フィルムと同等かそれ以上の適当な引張切断強さ及び伸びを発現させることができ、柔軟性,加工性,カッティング性,寸法安定性,耐候性,表面光沢性等に優れた化粧フィルムが得られることが明らかになった。
また、PBT,PSU,PP,UHPEを添加した実施例2乃至5の化粧フィルムは、引張切断強さが比較例1及び2より大きく比較例3よりも小さな値を示し、伸びが比較例1及び2より小さく比較例3よりも大きな値を示したが(表3)に示す塩化ビニル樹脂製フィルムより若干小さな値を示したことから、伸び等の機械的特性を調節することができ、柔軟性,加工性,カッティング性,寸法安定性等の諸特性を要求される特性に適合させることができ自在性に優れた化粧フィルムが得られることが明らかになった。
また、(表2)に示す実施例1乃至5の化粧フィルムの表面張力は、比較例1及び2より大きな値を示していることから、これより小さな表面張力を有する印刷用インクとよく濡れるため印刷性を高めるとともに、他の合成樹脂との付着性を高め容易に積層体を形成することができ汎用性に優れた化粧フィルムが得られることが明らかになった。
また、塩素を含有していないので、廃棄焼却時や火災時に有毒な塩化水素ガス等を発生したりダイオキシン類等の発生源とならず、また動物の体内のホルモン作用を攪乱すると指摘されている可塑剤の添加量を大幅に削減することができ環境保全性に優れることは明らかである。
As a result of the above measurement, as shown in Table 2, the decorative film of Example 1 has a tensile cutting strength larger than Comparative Examples 1 and 2 and smaller than Comparative Example 3, and the elongation is Comparative Example 1. And a value smaller than 2 and larger than Comparative Example 3, and it was found that the film has a tensile cut strength and elongation almost equal to those of the vinyl chloride resin film shown in (Table 3). Therefore, according to the present embodiment, an appropriate tensile cutting strength and elongation equal to or higher than that of a vinyl chloride resin decorative film can be expressed, and flexibility, workability, cutting properties, dimensional stability, It was revealed that a decorative film excellent in weather resistance, surface glossiness, etc. can be obtained.
In addition, the decorative films of Examples 2 to 5 to which PBT, PSU, PP, and UHPE were added showed a tensile cut strength larger than those of Comparative Examples 1 and 2 and smaller than that of Comparative Example 3, and an elongation of Comparative Examples 1 and 2. Although the value was smaller than 2 and larger than Comparative Example 3, it was slightly smaller than the vinyl chloride resin film shown in Table 3, so that mechanical properties such as elongation can be adjusted, and flexibility It has been clarified that a decorative film excellent in flexibility can be obtained by adapting various properties such as processability, cutting property and dimensional stability to required properties.
Moreover, since the surface tension of the decorative films of Examples 1 to 5 shown in (Table 2) is larger than that of Comparative Examples 1 and 2, the surface tension of the decorative film is much higher than that of the printing ink having a smaller surface tension. It has been clarified that a decorative film excellent in versatility can be obtained because the laminate can be easily formed while enhancing the printability and the adhesion to other synthetic resins.
In addition, since it does not contain chlorine, it has been pointed out that it does not generate toxic hydrogen chloride gas, etc. during waste incineration or fire, does not become a source of dioxins, and disturbs the hormonal action in animals. It is clear that the amount of plasticizer added can be greatly reduced and the environmental conservation is excellent.

本発明は、建築内装材等の装飾フィルム、広告看板用フィルム等の化粧フィルムに関し、廃棄焼却時や火災時に有毒な塩化水素ガス等を発生したりダイオキシン類等の発生源とならず、また動物の体内のホルモン作用を攪乱すると指摘されている可塑剤の添加量を大幅に削減することができ環境保全性に優れ、また塩化ビニル樹脂製の化粧フィルムと同等かそれ以上の適当な引張切断強さ及び伸びを発現させることができ、柔軟性,加工性,カッティング性,寸法安定性,耐候性,表面光沢性等に優れ、さらに適度なぬれ指数(表面張力)を付与して表面の印刷性を高めるとともに他の合成樹脂との付着性を高めることができ汎用性に優れる化粧フィルムを提供することができる。   The present invention relates to a decorative film such as a building interior material and a decorative film such as a billboard film, and does not generate toxic hydrogen chloride gas or a source of dioxins at the time of waste incineration or fire, It is possible to greatly reduce the amount of plasticizer added, which has been pointed out to disturb the hormonal action in the body, and is excellent in environmental conservation, and has an appropriate tensile cutting strength equal to or higher than that of a vinyl chloride resin decorative film. It can exhibit thickness and elongation, is excellent in flexibility, workability, cutting performance, dimensional stability, weather resistance, surface glossiness, etc., and also has an appropriate wetting index (surface tension) to provide surface printability. As well as improving adhesion to other synthetic resins, a decorative film having excellent versatility can be provided.

Claims (3)

ポリエチレン重合体と環状オレフィン重合体とを含有する組成物を形成して得られる化粧フィルムであって、前記組成物中の前記ポリエチレン重合体及び前記環状オレフィン重合体の配合比が、前記ポリエチレン重合体が40〜99wt%好ましくは65〜99wt%、前記環状オレフィン重合体が1〜60wt%好ましくは1〜35wt%であることを特徴とする化粧フィルム。   A decorative film obtained by forming a composition containing a polyethylene polymer and a cyclic olefin polymer, wherein a blending ratio of the polyethylene polymer and the cyclic olefin polymer in the composition is the polyethylene polymer. 40 to 99 wt%, preferably 65 to 99 wt%, and the cyclic olefin polymer is 1 to 60 wt%, preferably 1 to 35 wt%. 前記ポリエチレン重合体及び前記環状オレフィン重合体の混合物100重量部に対し、1〜50重量部のポリプロピレン、ポリブチレンテレフタレート,ポリアリレート等の芳香族ポリエステル、変性ポリフェニレンエーテル,ポリエーテルサルホン,ポリサルホン等の非晶性熱可塑性樹脂、超高分子量ポリエチレン等の内いずれか1種以上の熱可塑性樹脂が配合されていることを特徴とする請求項1に記載の化粧フィルム。   1 to 50 parts by weight of aromatic polyester such as polypropylene, polybutylene terephthalate, polyarylate, modified polyphenylene ether, polyether sulfone, polysulfone, etc. with respect to 100 parts by weight of the mixture of the polyethylene polymer and the cyclic olefin polymer The decorative film according to claim 1, wherein one or more thermoplastic resins such as an amorphous thermoplastic resin and ultrahigh molecular weight polyethylene are blended. 前記ポリエチレン重合体及び前記環状オレフィン重合体の混合物100重量部に対し、0.0005〜10重量部のブロッキング防止剤が配合されていることを特徴とする請求項1又は2に記載の化粧フィルム。   The decorative film according to claim 1 or 2, wherein 0.0005 to 10 parts by weight of an anti-blocking agent is blended with 100 parts by weight of the mixture of the polyethylene polymer and the cyclic olefin polymer.
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