JP4667569B2 - Heat-sealable coating agent and heat-sealable multilayer structure formed by coating the same - Google Patents
Heat-sealable coating agent and heat-sealable multilayer structure formed by coating the same Download PDFInfo
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Description
【０００１】
【発明の属する技術分野】
本発明は、塗膜を形成した際の膜の低湿表面固有抵抗値が１０12Ω以下であるヒートシール性コート剤及びフィルムなどを基材として用い該ヒートシール性コート剤をから得られるヒートシール層を含んでいるヒートシール性多層構造体に関するものである。これは低湿度下においての包装作業性に優れるものである。
また、本発明は、ヒートシール性コート剤が水性樹脂と尿素など保水性・保湿性を有する添加剤とからなるものである。これは、従来のハロゲン含有樹脂（塩化ビニリデン樹脂など）により加工されたヒートシール性フィルムとは対照的に廃棄物として焼却された時に、ハロゲン化水素やダイオキシン等の有害ガスが発生しないなどの点で特徴的である。
【０００２】
【従来の技術】
包装材等にヒートシール性を付与させる試みはいろいろとなされており、かつ包装が簡易化されるにしたがって、その必要性は高まっている。
例えば、特公昭６３−３８８３号公報には、塩化ビニリデン−メチルメタクリレート共重合体を用いたヒートシール性付与剤が例示されているが、このものは塩素を含有しており、廃棄物として処理する際にハロゲン化水素もしくはダイオキシン等の発生する可能性があるといった問題がある。
また、特開昭５０−１５０７８３号公報には、アクリロニトリル共重合体が積層されてなるフィルムが開示されているが、アクリロニトリルは耐熱黄変性が悪く、包装材として用いた場合は保存中に黄変してしまい、外観が悪化して商品価値を下げてしまう問題がある。
また特開昭５７−１３７３３９号公報には、エチレン、α，β−不飽和カルボン酸及びα，β−不飽和カルボン酸金属塩共重合体の変性物を水性分散体組成物としたものは、高温ヒートシール性に優れるものの、低温ヒートシール性は不充分である。
また、エチレン、α，β−不飽和カルボン酸及びα，β−不飽和カルボン酸金属塩共重合体のスチレンと（メタ）アクリル酸エステルで変性した変性物を用いたものは、ヒートシール性は満足しているが、耐侯性が悪く保存中に黄変が起ってしまう。
さらには、これらエチレン、α，β−不飽和カルボン酸及びその変性物の場合には、冬場など低湿度下においては塗膜の表面固有抵抗値が上がってしまうため、フィルムがはりつき包装作業性が悪化する問題もある。
【０００３】
【発明が解決しようとする課題】
以上の問題点をすべて解決し、低温で充分なヒートシール性があり、耐侯性、耐水性、耐溶剤性、作業性（低湿度下での良好な表面固有抵抗値発現性）に優れ、また焼却時にハロゲン化水素、ダイオキシンなどの有毒ガスを発生する恐れのないヒートシール性コート剤及び包装材料を提供する。
【０００４】
【課題を解決するための手段】
本発明者らは、前記目的を達成するために鋭意研究を重ねた結果、本発明を完成するに到った。すなわち、本発明は、
［１］低湿表面固有抵抗値（３０℃、３０％ＲＨ、印可電圧５６０Ｖで測定）が、１０12Ω以下である塗膜を形成することを特徴とするヒートシール性コート剤。
［２］（ａ）水性樹脂、及び（ｂ）尿素、ポリエチレングリコール類、シリカ化合物類、セルロース類、カゼイン類のうち少なくとも一種類の添加剤を混合してなることを特徴とする［１］記載のヒートシール性コート剤。
［３］水性樹脂が、水分散系樹脂であることを特徴とする［２］に記載のヒートシール性コート剤。
［４］（Ｉ）基材からなる層及び（ＩＩ）［１］乃至［３］の何れかに記載のヒートシール性コート剤からなるヒートシール層の二層を少なくとも一部に含んでいることを特徴とする、二層以上のヒートシール性多層構造体。
［５］基材がポリオレフィンフィルムであることを特徴とする［４］記載のヒートシール性多層構造体。
【０００５】
【発明の実施の形態】
本発明の内容について以下に詳しく説明する。
本発明のヒートシール性コート剤は、塗膜を形成した際の膜の低湿表面固有抵抗値（３０℃、３０％ＲＨ、印可電圧５６０Ｖで測定）が１０12Ω以下のものである。
本発明において低湿表面固有抵抗値とは、３０℃、３０％ＲＨの恒温恒湿ボックス内に、市販の表面抵抗測定機例えば（株）アドバンテスト製 デジタル超高抵抗／微少電流計 Ｒ８３４０Ａと共に一定時間静置し、印可電圧５６０Ｖで測定するものである。１０12Ω以下なら実用レベルとみなせる。
【０００６】
また、本発明のヒートシール性コート剤は、（ａ）水性樹脂、及び（ｂ）尿素、ポリエチレングリコール類、シリカ化合物類、セルロース類、カゼイン類のうち少なくとも一種類の添加剤を混合してなるものである。
【０００７】
［（ａ）水性樹脂］
水性樹脂については特に制限はないが、塗工剤の扱いやすさなどを考慮すると水溶性高分子よりは水分散系樹脂が好ましい。
具体的にはアクリルエマルション、アイオノマーエマルション、アクリル／アイオノマー複合化エマルション、ポリオレフィンエマルションなどがより好ましい。
【０００８】
［水分散体系樹脂の調製］
本発明において使用する水分散体系樹脂の製造方法は、特に制限されない。
また、本発明において使用する水分散体系樹脂は、通常、公知の機械乳化法、乳化重合法などにより製造することができる。アイオノマーエマルションの市販品の例としては、ケミパールＳ−１００，Ｓ−６５０，Ｓ−６５９（何れも三井化学株式会社製商品名）などが挙げられる。乳化重合法によるアクリルエマルションの重合例としては特開平１２−５２５０２号公報が挙げられる。
【０００９】
［（ｂ）添加剤］
本発明において添加剤としては尿素、ポリエチレングリコール類（ポリエチレングリコール、ポリエチレングリコールモノエステルもしくはジエステル類）、コロイダルシリカなどのシリカ化合物類、ヒドロキシエチルセルロースなどのセルロース類、カゼイン類などの保水性・保湿性を有するものが挙げられる。なかでも尿素及び、ポリエチレングリコール類などが好ましく用いられ、さらに好ましくは尿素である。
また、添加量は特に制限はないが、少なければ効果が小さく、また多すぎれば添加したほどの物性向上効果が見られないため、通常は水性樹脂の固形分１００部に対して０．３〜３０重量部が好ましい。
また、これらの添加剤は単独で用いてもよいし、2種類以上を適切な比率で混合、併用しても構わない。
【００１０】
［その他の添加剤］
その他、必要に応じて下記の添加剤をヒートシール性及び、その他の必要物性が損なわれない範囲で添加しても構わない。添加剤の例としては、パラフィンワックス、カルナバワックス等のワックス類、帯電防止剤、紫外線吸収剤、有機ポリマー微粒子、無機微粒子などのアンチブロッキング剤などが挙げられる。
【００１１】
このようにして得られるヒートシール性コート剤を、基材からなる層上に塗工してヒートシール層とすることで本発明のヒートシール性多層構造体を得ることができる。
【００１２】
［基材］
基材についても特に制限はなく、一般的に包装材に用いうるポリオレフィンフィルムなどが使用可能で、高圧法低密度ポリエチレン、中低圧法高密度ポリエチレン、中密度ポリエチレン、線状低密度ポリエチレン、ポリプロピレン、ポリブテン−１、ポリ−４−メチルペンテン−１、エチレン−酢酸ビニル共重合体、エチレン−メタクリル酸共重合体、アイオノマー樹脂等、α−オレフィンを５０％以上含む重合体を主成分とする無延伸フィルム、一軸延伸フィルム及び二軸延伸フィルムが挙げられる。
中でも、二軸延伸ポリプロピレンフィルム、二軸延伸ポリエチレンテレフタレートフィルム、二軸延伸ポリアミドフィルムが好ましい。基材の厚みについても特に制限はないが、フィルムの強度、加工性、経済性を考慮すると１２〜１００μｍが好ましい。
また、ヒートシール層と基材との密着性向上のためにコロナ放電処理などの表面処理を行っても良い。
【００１３】
上記のヒートシール性コート剤は、そのまま基材上に塗工しても良いし、基材との間に一層以上のプライマー層を設けても良い。
使用されるプライマー種については特に制限はない。
【００１４】
また、塗工の方法は公知の技術例えば、グラビアコーター、リバースコーター、キスコーター、エアナイフコーター、メイヤーバーコーター、ディップコーター等により行うことができる。
また、塗工は目的に応じてフィルムの片面のみもしくは両面に施すことができる。更には、オフライン（フィルム成形後に塗工）、インライン（フィルム成形時に塗工）の何れの方法もとりうる。
【００１５】
乾燥条件についても特に制限はない。透明なフィルムが形成される温度であればよく、通常は熱風乾燥機などが用いられ、乾燥温度は６０〜１８０℃（塗工方法による）、乾燥時間は２秒〜５分程度である。
また必要に応じて、後処理として、乾燥後にコロナ放電処理などを施しても良い。
【００１６】
塗工量についても特に制限はないが、０．３ｇ／ｍ2〜５．０ｇ／ｍ2が好ましい。薄すぎると塗膜欠陥等を生じて、充分なヒートシール性が得られず、逆に厚すぎるとヒートシールさせるのに時間、熱量がかかりすぎるなどコストの割には効果がない。
【００１７】
【実施例】
次に具体的な樹脂の配合例、塗工例などの実施例、比較例を挙げる。但し本発明はこの実施例によって制限されない。
尚、含有量を示す％は固形分の重量％を添加量を表す部は重量部を示す。
【００１８】
（実施例１）
ケミパールＳ６５９［三井化学（株）製］および尿素［三井化学（株）製］を表１に示す配合量で混合し塗工剤とした。
二軸延伸機で縦延伸したポリプロピレンフィルムにコロナ放電処理を行い、ライン中、横延伸ゾーンの前で前記塗工剤をワイヤーバーにて塗工し、１８０℃で５秒乾燥しそのまま横延伸させることによって塗工量約０．５ｇ／ｍ2のヒートシール性多層構造体を得た。
【００１９】
（実施例２〜３、比較例１）
配合量を表１に示すように配合を行い塗工剤とし、実施例１と同様にヒートシール性多層構造体を得た。
【００２０】
【表１】
（テストピース作成方法）
実施例１〜３、比較例１で得たヒートシール性構造体を適当な大きさにカッティングし、４０℃×約２０時間エージングしテストピースとした。
【００２２】
評価方法
（１）ヒートシール性
熱傾斜シーラーを用い、シール温度９０〜１３０℃（１０℃間隔）で圧力１ｋｇ／ｃｍ2、時間０．５秒でヒートシールさせた。
サンプル幅を３０ｍｍとし、引張り速度３００ｍｍ／ｍｉｎで９０°ピール強度を測定し、これをヒートシール強度とした。１．０Ｎ／３０ｍｍ以上あれば実用レベルとみなせる。
【００２３】
（２）外観
塗工したテストピースの外観を目視で判定した。
○；透明、×；白化
【００２４】
（３）表面固有抵抗値（通常湿度下）
テストピースを２３℃、５０％ＲＨの恒温恒湿室に一定時間静置し市販の表面抵抗測定機例えば（株）川口電気製作所 Ｕｎｉｖｅｒｓａｌ Ｅｌｅｃｒｏｍｅｔｅｒ ＭＭＡＩＩ−１７Ａ 印可電圧１００Ｖで測定した。１０12Ω以下なら実用レベルとみなせる。
【００２５】
（４）低湿表面固有抵抗値
テストピースを３０℃、３０％ＲＨの恒温恒湿ボックス内に測定機、例えば（株）アドバンテスト デジタル超高抵抗／微少電流計 Ｒ８３４０Ａ と共に一定時間静置し、印可電圧５６０Ｖにて測定した。（３）と同じく、１０12Ω以下なら実用レベルとみなせる。
【００２６】
（５）耐ブロッキング性
５ｃｍ角にカッティングしたテストピースの塗工面同士を重ね合せ、４０℃において、荷重５ｋｇをかけ、５時間静置した。
室温に戻した後、フィルムを剥がす時の剥がした後の塗膜の状態、基材フィルムの破れ方などを目視で評価。
○；剥がれなし、△；剥がれあり、×；基材破れ
【００２７】
（６）耐溶剤性
フィルムに溶剤（トルエン、エタノールなど）を一滴垂らし、乾燥後の塗膜の白化状態を目視で評価。
○；透明、△；部分的に白化、×；全面的に白化
【００２８】
（７）耐水性
１０ｃｍ角にカッティングしたフィルムを９０℃の熱水に３０秒浸漬させ、取り出した後余分な水分を拭き取り、塗膜の白化の具合を目視で評価。
○；透明、△；部分的に白化、×；全面的に白化
評価結果は表２のようになった。
【００２９】
【表２】
【発明の効果】
本発明により、低湿度下においても作業性の良い包装材料に好適で、ヒートシール性、外観、表面固有抵抗値（高湿度、低湿度）、耐溶剤性、耐水性に優れる、低温ヒートシール性コート剤を提供することができる。[0001]
BACKGROUND OF THE INVENTION
The present invention is a heat seal humidity surface resistivity of film when forming the coating film obtained from the heat-sealable coating agent using the heat sealable coating agent and film or the like as a base material is not more than 10 12 Omega The present invention relates to a heat-sealable multilayer structure including a layer. This is excellent in packaging workability under low humidity.
In the present invention, the heat-sealable coating agent is composed of an aqueous resin and an additive having water retention and moisture retention, such as urea. This is because, in contrast to heat-sealable films processed with conventional halogen-containing resins (such as vinylidene chloride resin), no harmful gases such as hydrogen halides or dioxins are generated when incinerated as waste. It is characteristic in.
[0002]
[Prior art]
Various attempts have been made to impart heat-sealing properties to packaging materials and the like, and the necessity thereof has increased as packaging has been simplified.
For example, Japanese Patent Publication No. 63-3883 discloses a heat sealability-imparting agent using a vinylidene chloride-methyl methacrylate copolymer, which contains chlorine and is treated as waste. There is a problem that hydrogen halide or dioxin may be generated.
Japanese Patent Application Laid-Open No. 50-150783 discloses a film in which an acrylonitrile copolymer is laminated. However, acrylonitrile is poor in heat-resistant yellowing, and when used as a packaging material, it turns yellow during storage. Therefore, there is a problem in that the appearance deteriorates and the commercial value is lowered.
JP-A-57-137339 discloses an aqueous dispersion composition obtained by modifying a modified product of ethylene, α, β-unsaturated carboxylic acid and α, β-unsaturated carboxylic acid metal salt copolymer, Although it is excellent in high temperature heat sealability, the low temperature heat sealability is insufficient.
Moreover, what used the modification | denaturation modified | denatured with styrene and (meth) acrylic acid ester of ethylene, (alpha), (beta)-unsaturated carboxylic acid, and (alpha), (beta)-unsaturated carboxylic acid metal salt copolymer is heat-sealability. Although satisfied, the weather resistance is poor and yellowing occurs during storage.
Furthermore, in the case of these ethylene, α, β-unsaturated carboxylic acid and modified products thereof, the surface resistivity of the coating film increases at low humidity such as in winter, so that the film is stuck and the packaging workability is improved. There are also problems that get worse.
[0003]
[Problems to be solved by the invention]
Solves all of the above problems, has sufficient heat-sealability at low temperatures, has excellent weather resistance, water resistance, solvent resistance, and workability (good surface resistivity value expression under low humidity). Provided are a heat-sealable coating agent and a packaging material that do not generate a toxic gas such as hydrogen halide and dioxin during incineration.
[0004]
[Means for Solving the Problems]
As a result of intensive studies to achieve the above object, the present inventors have completed the present invention. That is, the present invention
[1] A heat-sealable coating agent characterized by forming a coating film having a low-humidity surface specific resistance value (measured at 30 ° C., 30% RH, applied voltage 560 V) of 10 12 Ω or less.
[2] [1] Description, comprising (a) an aqueous resin, and (b) at least one additive selected from urea, polyethylene glycols, silica compounds, celluloses, and caseins. Heat sealable coating agent.
[3] The heat-sealable coating agent according to [2], wherein the aqueous resin is a water-dispersed resin.
[4] It includes at least a part of two layers of (I) a layer made of a base material and (II) a heat seal layer made of a heat-sealable coating agent according to any one of [1] to [3]. A heat-sealable multilayer structure having two or more layers.
[5] The heat-sealable multilayer structure according to [4], wherein the substrate is a polyolefin film.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
The contents of the present invention will be described in detail below.
The heat-sealable coating agent of the present invention has a low-humidity surface specific resistance value (measured at 30 ° C., 30% RH, applied voltage 560 V) of 10 12 Ω or less when a coating film is formed.
In the present invention, the low-humidity surface resistivity value is a constant temperature and humidity box of 30 ° C. and 30% RH, and is static for a certain time together with a commercially available surface resistance measuring instrument such as a digital ultrahigh resistance / microammeter R8340A manufactured by Advantest Corporation. And measured at an applied voltage of 560V. If it is 10 12 Ω or less, it can be regarded as a practical level.
[0006]
The heat-sealable coating agent of the present invention comprises (a) an aqueous resin and (b) at least one additive selected from urea, polyethylene glycols, silica compounds, celluloses, and caseins. Is.
[0007]
[(A) Aqueous resin]
Although there is no restriction | limiting in particular about aqueous resin, In consideration of the ease of handling of a coating agent etc., water-dispersed resin is preferable to water-soluble polymer.
Specifically, an acrylic emulsion, an ionomer emulsion, an acrylic / ionomer composite emulsion, a polyolefin emulsion, and the like are more preferable.
[0008]
[Preparation of water-dispersed resin]
The method for producing the water-dispersed resin used in the present invention is not particularly limited.
In addition, the water-dispersed resin used in the present invention can be usually produced by a known mechanical emulsion method, emulsion polymerization method or the like. Examples of commercially available ionomer emulsions include Chemipearl S-100, S-650, and S-659 (all are trade names manufactured by Mitsui Chemicals, Inc.). As an example of polymerization of an acrylic emulsion by emulsion polymerization, JP-A No. 12-52502 can be mentioned.
[0009]
[(B) Additive]
In the present invention, additives such as urea, polyethylene glycols (polyethylene glycol, polyethylene glycol monoesters or diesters), silica compounds such as colloidal silica, celluloses such as hydroxyethyl cellulose, water retention and moisture retention such as caseins The thing which has. Of these, urea and polyethylene glycols are preferably used, and urea is more preferable.
Further, the amount added is not particularly limited, but the effect is small if it is small, and if it is too much, the effect of improving the physical properties as much as added is not seen. 30 parts by weight is preferred.
Moreover, these additives may be used alone, or two or more of them may be mixed and used in an appropriate ratio.
[0010]
[Other additives]
In addition, if necessary, the following additives may be added as long as the heat sealability and other necessary physical properties are not impaired. Examples of additives include waxes such as paraffin wax and carnauba wax, anti-blocking agents such as antistatic agents, ultraviolet absorbers, organic polymer fine particles, and inorganic fine particles.
[0011]
The heat-sealable multilayer structure of the present invention can be obtained by applying the heat-sealable coating agent thus obtained onto a layer made of a base material to form a heat-seal layer.
[0012]
[Base material]
There is no particular limitation on the base material, and polyolefin films that can be generally used for packaging materials can be used. High pressure method low density polyethylene, medium low pressure method high density polyethylene, medium density polyethylene, linear low density polyethylene, polypropylene, Polybutene-1, poly-4-methylpentene-1, ethylene-vinyl acetate copolymer, ethylene-methacrylic acid copolymer, ionomer resin, and the like, mainly composed of a polymer containing 50% or more α-olefin Examples include films, uniaxially stretched films, and biaxially stretched films.
Among these, a biaxially stretched polypropylene film, a biaxially stretched polyethylene terephthalate film, and a biaxially stretched polyamide film are preferable. Although there is no restriction | limiting in particular also about the thickness of a base material, when considering the intensity | strength of a film, workability, and economical efficiency, 12-100 micrometers is preferable.
Moreover, you may perform surface treatments, such as a corona discharge process, for the adhesive improvement of a heat seal layer and a base material.
[0013]
The above heat-sealable coating agent may be applied on the substrate as it is, or one or more primer layers may be provided between the substrate and the substrate.
There is no restriction | limiting in particular about the primer kind used.
[0014]
The coating method can be performed by a known technique such as a gravure coater, reverse coater, kiss coater, air knife coater, Mayer bar coater, dip coater or the like.
Also, the coating can be applied to only one side or both sides of the film depending on the purpose. Furthermore, either offline (coating after film forming) or in-line (coating during film forming) can be used.
[0015]
There is no particular limitation on the drying conditions. The temperature may be any temperature at which a transparent film is formed. Usually, a hot air dryer or the like is used, the drying temperature is 60 to 180 ° C. (depending on the coating method), and the drying time is about 2 seconds to 5 minutes.
Moreover, you may give a corona discharge process etc. after drying as post-processing as needed.
[0016]
Also not particularly limited coating amount but, 0.3g / m 2 ~5.0g / m 2 is preferred. If it is too thin, a coating film defect or the like is caused and sufficient heat sealability cannot be obtained. On the other hand, if it is too thick, it takes too much time and heat to effect heat sealing.
[0017]
【Example】
Next, specific examples of resin blending, examples such as coating examples, and comparative examples will be given. However, the present invention is not limited by this embodiment.
In addition,% which shows content shows weight part of the solid content weight part, and the part showing addition amount shows a weight part.
[0018]
Example 1
Chemipearl S659 [manufactured by Mitsui Chemicals, Inc.] and urea [manufactured by Mitsui Chemicals, Inc.] were mixed in the blending amounts shown in Table 1 to obtain coating agents.
Corona discharge treatment is performed on the polypropylene film stretched longitudinally with a biaxial stretching machine, and the coating agent is coated with a wire bar in front of the transverse stretching zone in the line, dried at 180 ° C. for 5 seconds, and then stretched as it is. As a result, a heat-sealable multilayer structure having a coating amount of about 0.5 g / m 2 was obtained.
[0019]
(Examples 2-3, Comparative Example 1)
The blending amount was blended as shown in Table 1 to obtain a coating agent, and a heat-sealable multilayer structure was obtained in the same manner as in Example 1.
[0020]
[Table 1]
(Test piece creation method)
The heat-sealable structures obtained in Examples 1 to 3 and Comparative Example 1 were cut to an appropriate size and aged at 40 ° C. for about 20 hours to obtain test pieces.
[0022]
Evaluation Method (1) Heat sealability Using a heat-graded sealer, heat sealing was performed at a sealing temperature of 90 to 130 ° C. (10 ° C. interval), a pressure of 1 kg / cm 2 , and a time of 0.5 seconds.
The sample width was 30 mm, 90 ° peel strength was measured at a pulling speed of 300 mm / min, and this was defined as heat seal strength. If it is 1.0 N / 30 mm or more, it can be regarded as a practical level.
[0023]
(2) The appearance of the coated test piece was visually determined.
○: Transparent, ×: Whitening
(3) Surface resistivity (under normal humidity)
The test piece was allowed to stand in a constant temperature and humidity chamber at 23 ° C. and 50% RH for a certain period of time, and measured with a commercially available surface resistance measuring instrument such as Kawaguchi Electric Co., Ltd. Universal Electrometer MMAII-17A applied voltage of 100V. If it is 10 12 Ω or less, it can be regarded as a practical level.
[0025]
(4) The low-humidity surface specific resistance value test piece is left in a constant temperature and humidity box at 30 ° C. and 30% RH for a certain period of time together with a measuring machine, for example, Advantest Digital Ultra High Resistance / Micro Ammeter R8340A. Measured at 560V. As in (3), if it is 10 12 Ω or less, it can be regarded as a practical level.
[0026]
(5) Blocking resistance The coated surfaces of test pieces cut to a 5 cm square were overlapped, and a load of 5 kg was applied at 40 ° C. and left still for 5 hours.
After returning to room temperature, the state of the coating film after peeling off the film, how to tear the substrate film, etc. are visually evaluated.
○: No peeling, Δ: Peeling, ×: Base material tearing [0027]
(6) A drop of solvent (toluene, ethanol, etc.) is dropped on the solvent-resistant film, and the whitening state of the coating after drying is visually evaluated.
○: Transparent, △: Partially whitened, ×: Fully whitened
(7) A film cut to 10 cm square with water resistance is immersed in hot water at 90 ° C. for 30 seconds, taken out, wiped off excess water, and visually evaluated the degree of whitening of the coating film.
○: Transparent, Δ: Partially whitened, ×: Overall whitening evaluation results are shown in Table 2.
[0029]
[Table 2]
【The invention's effect】
According to the present invention, it is suitable for packaging materials having good workability even under low humidity, heat sealability, appearance, surface resistivity (high humidity, low humidity), solvent resistance, water resistance, low temperature heat sealability A coating agent can be provided.
Claims (3)
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| JP2000277622A JP4667569B2 (en) | 2000-09-13 | 2000-09-13 | Heat-sealable coating agent and heat-sealable multilayer structure formed by coating the same |
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| JP2000277622A JP4667569B2 (en) | 2000-09-13 | 2000-09-13 | Heat-sealable coating agent and heat-sealable multilayer structure formed by coating the same |
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| JP2002088309A JP2002088309A (en) | 2002-03-27 |
| JP4667569B2 true JP4667569B2 (en) | 2011-04-13 |
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| JP7274641B1 (en) * | 2022-04-12 | 2023-05-16 | 東洋インキＳｃホールディングス株式会社 | Heat-seal laminate and package |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE2963447D1 (en) * | 1978-12-18 | 1982-09-16 | Mobil Oil Corp | Thermoplastic coated films with anti-static properties |
| JPS55152060A (en) * | 1979-05-18 | 1980-11-27 | Mitsui Petrochemical Ind | Preparation of heat sealing film |
| US5202205A (en) * | 1990-06-27 | 1993-04-13 | Xerox Corporation | Transparencies comprising metal halide or urea antistatic layer |
| JP3053892B2 (en) * | 1991-03-27 | 2000-06-19 | 三井・デュポンポリケミカル株式会社 | LAMINATE AND ITS MANUFACTURING METHOD |
| JP3061150B2 (en) * | 1991-05-16 | 2000-07-10 | 三井・デュポンポリケミカル株式会社 | Aqueous dispersion composition, coating formed therefrom, and method for producing the same |
| JPH06107874A (en) * | 1992-09-30 | 1994-04-19 | Du Pont Mitsui Polychem Co Ltd | Packaging film |
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