JP2009126924A - Heat-sealing adhesive and heat-sealing lid material coated with the adhesive - Google Patents

Heat-sealing adhesive and heat-sealing lid material coated with the adhesive Download PDF

Info

Publication number
JP2009126924A
JP2009126924A JP2007302572A JP2007302572A JP2009126924A JP 2009126924 A JP2009126924 A JP 2009126924A JP 2007302572 A JP2007302572 A JP 2007302572A JP 2007302572 A JP2007302572 A JP 2007302572A JP 2009126924 A JP2009126924 A JP 2009126924A
Authority
JP
Japan
Prior art keywords
heat
sealing
adhesive
polymer
resin
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.)
Pending
Application number
JP2007302572A
Other languages
Japanese (ja)
Inventor
Yoshio Nakajima
祥雄 中島
Yoshikazu Iwata
義一 岩田
Keiichi Takiyama
慶一 滝山
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.)
RIIDAA KK
LEADER CO Ltd
Original Assignee
RIIDAA KK
LEADER 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 RIIDAA KK, LEADER CO Ltd filed Critical RIIDAA KK
Priority to JP2007302572A priority Critical patent/JP2009126924A/en
Publication of JP2009126924A publication Critical patent/JP2009126924A/en
Pending legal-status Critical Current

Links

Landscapes

  • Closures For Containers (AREA)
  • Adhesives Or Adhesive Processes (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a heat-sealing adhesive that has low-temperature heat-sealing properties and provides a heat-sealing resin layer free from surface stickiness and a heat-sealing lid material coated with the adhesive. <P>SOLUTION: The heat-sealing adhesive includes an adhesive resin component composed of 5-40 wt.% of a carboxylic acid-modified propylene (co)polymer and 95-60 wt.% of a resin mixture and a solvent in which the resin mixture is composed of a soluble olefin (co)polymer and a (meth)acrylate (co)polymer in the weight ratio of 90:10-50:50. The heat-sealing lid material is obtained by coating a metal foil with the heat-sealing adhesive and is used for heat-sealing a PTP (Press Through Pack) container comprising a propylene resin sheet as a base material. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、熱封緘性接着剤、特に医薬品等の包装に使用されるPTP(Press Through Pack)包装用の熱封緘性蓋材に用いる熱封緘性接着剤及びこの接着剤を塗工した熱封緘性蓋材に関するものである。   The present invention relates to a heat-sealing adhesive, particularly a heat-sealing adhesive used for a heat-sealing lid for PTP (Press Through Pack) packaging used for packaging pharmaceuticals, etc., and a heat-sealing adhesive coated with this adhesive It is related with a characteristic lid material.

PTP包装材は、内容物を格納するための容器の部分となるポケットを成形したプラスチックシ−トの加工成形体と、その容器口部を密封するための蓋の部分となる、金属箔、特にアルミニウム箔の基材の一面に熱封緘性樹脂層を設けた熱封緘性蓋材との二つの部分からなる。   PTP packaging material is a plastic sheet processed molded body in which a pocket that is a part of a container for storing contents is molded, and a metal foil that is a part of a lid for sealing the container mouth, in particular It consists of two parts: a heat-sealing lid material provided with a heat-sealing resin layer on one surface of an aluminum foil substrate.

容器本体を形成するプラスチックシ−トとしては、加工性に優れているため古くから塩化ビニル樹脂シ−トが使用されているが、近年、防湿性に優れかつ安価であるところから、プロピレン樹脂シ−トが使用されるようになってきている。一方、蓋材の基材としては、金属箔、特にアルミニウム箔が通常採用されている。なお、破裂を容易にするための加工を施したプラスチックフィルムも提案されているが、未だ実用されるには至っていない。   As a plastic sheet for forming the container body, a vinyl chloride resin sheet has been used for a long time because of its excellent processability. However, in recent years, it has excellent moisture resistance and is inexpensive, so it is a propylene resin sheet. -G is being used. On the other hand, a metal foil, particularly an aluminum foil is usually employed as a base material for the lid. In addition, although the plastic film which gave the process for making it easy to burst has been proposed, it has not yet been put into practical use.

前記の蓋材は、通常、金属箔、特にアルミニウム箔の基材の片面又は両面に文字やデザインを印刷し、更にその上に一方の面(外側になる面)には、必要により、無色または着色した透明な耐熱性被覆剤を塗工するか、または、プラスチックフィルムを積層することにより熱封緘時に文字やデザインなどの印刷層を保護するための耐熱性樹脂層を設け、反対の面(接着される面)にはプラスチック製容器に加熱圧着によって熱封緘させるために、文字やデザインあるいは全面着色の印刷層を印刷し、更にその上に熱封緘性接着剤を塗布して熱封緘性樹脂層を形成させることにより製造されている。   The above-mentioned lid material is usually printed with characters or designs on one or both sides of a metal foil, particularly an aluminum foil base material, and further, on one side (the side that becomes the outside), if necessary, colorless or A colored heat-resistant coating material is applied, or a plastic film is laminated to provide a heat-resistant resin layer for protecting printed layers such as letters and designs during heat sealing. In order to heat-seal a plastic container by thermocompression bonding, a printed layer of characters, design or full color is printed on the surface, and a heat-sealing adhesive is further coated thereon to form a heat-sealing resin layer. It is manufactured by forming.

包装作業における内容物の充填操作は、前記の容器となるポケットを設けた塩化ビニル樹脂シ−トやプロピレン樹脂シ−トの加工成形体に内容物を格納した後、その開口面側に前記のアルミニウム箔を基材とする蓋材をその熱封緘性樹脂層が接触するように積層し、蓋材の耐熱性樹脂層を設けた面からヒートシールバーあるいは熱封緘ドラムにより加熱下に圧着することによりプラスチック容器の非ポケット部分に熱融着させることによって遂行される。   The filling operation of the contents in the packaging operation is performed by storing the contents in a processed molded body of a vinyl chloride resin sheet or a propylene resin sheet provided with a pocket serving as the container, and then opening the contents on the opening side. Laminating a lid material made of aluminum foil as a base material so that the heat-sealing resin layer is in contact, and pressing the heat-resistant resin layer of the lid material with a heat seal bar or a heat sealing drum while heating. This is accomplished by heat fusing to the non-pocket portion of the plastic container.

加熱加圧条件は蓋材の基材の厚みや圧着時間等の条件によって異なるが、熱封緘温度は120℃〜280℃の間で行われており、熱封緘圧力は0.10〜0.29MPaに設定されていることが多い。   The heating and pressing conditions vary depending on conditions such as the thickness of the base material of the lid and the pressure bonding time, but the heat sealing temperature is 120 ° C. to 280 ° C., and the heat sealing pressure is 0.10 to 0.29 MPa. It is often set to.

前記蓋材の熱封緘性樹脂層は、通常、熱可塑性樹脂からなり、加工成形体(プラスチック容器)の材質により、それぞれ塩化ビニル(共)重合体、プロピレン(共)重合体等の樹脂を主成分とする樹脂組成物が使用されているが、プロピレン樹脂製容器に対してはカルボン酸変性プロピレン(共)重合体が使用されてきている(特許文献1参照)。
特開昭63−12651号公報
The heat-sealing resin layer of the lid is usually made of a thermoplastic resin, and is mainly made of a resin such as vinyl chloride (co) polymer or propylene (co) polymer, depending on the material of the processed molded body (plastic container). A resin composition as a component is used, and a carboxylic acid-modified propylene (co) polymer has been used for a propylene resin container (see Patent Document 1).
JP-A 63-12651

容器として使用するプラスチックシートの材質がプロピレン樹脂の場合には、前述したように蓋材の熱封緘性樹脂層としてカルボン酸変性プロピレン(共)重合体あるいはカルボン酸変性プロピレン(共)重合体を主成分とする樹脂組成物が使用されている。かかる酸変性プロピレン(共)重合体は金属箔とプロピレン樹脂シートの加工成形体との熱封緘性が良好であるが、熱封緘時の熱によるPTP包装体の反りなどの変形を防止し、かつ、生産性を向上させるために、低温熱封緘性が求められている。   When the material of the plastic sheet used as the container is propylene resin, as described above, the main material of the lid is a carboxylic acid-modified propylene (co) polymer or a carboxylic acid-modified propylene (co) polymer. A resin composition as a component is used. Such an acid-modified propylene (co) polymer has good heat sealing properties between the metal foil and the processed molded product of the propylene resin sheet, but prevents deformation such as warping of the PTP package due to heat during heat sealing, and In order to improve productivity, low temperature heat sealability is required.

本発明者等は課題の解決のため、所定の比率で混合したカルボン酸変性プロピレン(共)重合体と特定の樹脂混合物と溶剤とからなる熱封緘性接着剤の製造に成功した。この接着剤は、約100℃の熱封緘温度で接着が開始し、約120℃で実用的な接着強度を示し、塩化ビニル樹脂シート用接着剤と同等の熱封緘作業性を有する。   In order to solve the problems, the present inventors have succeeded in producing a heat-sealing adhesive comprising a carboxylic acid-modified propylene (co) polymer mixed in a predetermined ratio, a specific resin mixture, and a solvent. This adhesive starts bonding at a heat sealing temperature of about 100 ° C., shows practical adhesive strength at about 120 ° C., and has heat sealing workability equivalent to that of an adhesive for a vinyl chloride resin sheet.

本発明の熱封緘性接着剤は、カルボン酸変性プロピレン(共)重合体5〜40wt%と、樹脂混合物95〜60wt%とからなる接着性樹脂成分と、溶剤とからなり、前記樹脂混合物が、可溶性オレフィン(共)重合体と、(メタ)アクリル酸エステル(共)重合体とからなり、その重量比が90:10〜50:50であることを特徴としている(請求項1)。   The heat-sealing adhesive of the present invention comprises an adhesive resin component consisting of 5 to 40 wt% of a carboxylic acid-modified propylene (co) polymer and a resin mixture of 95 to 60 wt%, and a solvent, and the resin mixture is It consists of a soluble olefin (co) polymer and a (meth) acrylic acid ester (co) polymer, and the weight ratio is 90:10 to 50:50 (Claim 1).

この熱封緘性接着剤においては炭化水素系、エステル系、ケトン系、アルコール系等の塗料、印刷インキ、接着剤において一般に使用される有機溶剤が使用できる。特に脂肪族炭化水素系溶剤または脂肪族炭化水素系溶剤を主成分とする混合溶剤の使用は良好な塗工作業性を示すので好適である。   In the heat-sealing adhesive, organic solvents generally used in hydrocarbon-based, ester-based, ketone-based, alcohol-based paints, printing inks, and adhesives can be used. In particular, the use of an aliphatic hydrocarbon solvent or a mixed solvent containing an aliphatic hydrocarbon solvent as a main component is preferable because it shows good coating workability.

本発明の熱封緘性蓋材は、金属箔、特にアルミニウム箔からなる基材の一面に、前記熱封緘性接着剤を塗工したことを特徴としている(請求項2)。   The heat-sealing lid material of the present invention is characterized in that the heat-sealing adhesive is applied to one surface of a base material made of a metal foil, particularly an aluminum foil (Claim 2).

本発明の熱封緘性接着剤は、カルボン酸変性プロピレン(共)重合体5〜40wt%と、樹脂混合物95〜60wt%とからなる接着性樹脂成分と、溶剤とからなることを特徴としている。
そのため、公知のカルボン酸変性プロピレン(共)重合体あるいはカルボン酸変性プロピレン(共)重合体を主成分とする樹脂組成物からなる熱封緘性接着剤よりも流動性に優れ、均一な塗工が容易であり、かつ、乾燥性も良好で特に高温乾燥の必要がないため熱による歪みなどの欠陥のない蓋材が得られる。
The heat-sealing adhesive of the present invention is characterized by comprising an adhesive resin component composed of 5 to 40% by weight of a carboxylic acid-modified propylene (co) polymer, 95 to 60% by weight of a resin mixture, and a solvent.
Therefore, it has better fluidity and more uniform coating than a heat-sealing adhesive comprising a known carboxylic acid-modified propylene (co) polymer or a resin composition mainly composed of a carboxylic acid-modified propylene (co) polymer. Since it is easy and has good drying properties and does not require drying at high temperature, a lid material free from defects such as distortion due to heat can be obtained.

更に、本発明の熱封緘性接着剤を塗工した蓋材は、公知のカルボン酸変性プロピレン(共)重合体あるいはカルボン酸変性プロピレン(共)重合体を主成分とする樹脂組成物からなる熱封緘性接着剤を塗工した蓋材のように、熱封緘に際して特に高温を要しないので、加工に要するエネルギーが節約されると同時に、熱封緘して得られるPTP包装体が熱によって生じる歪みによる反りなどの変形を生じることがなくなる。   Furthermore, the cover material coated with the heat-sealing adhesive of the present invention is a heat composed of a known carboxylic acid-modified propylene (co) polymer or a resin composition mainly composed of a carboxylic acid-modified propylene (co) polymer. Unlike lids coated with sealing adhesive, high temperature is not required for heat sealing, so energy required for processing is saved, and at the same time, PTP packaging obtained by heat sealing is due to distortion caused by heat. No warping or other deformation occurs.

さらに前記樹脂混合物は、可溶性オレフィン(共)重合体と、(メタ)アクリル酸エステル(共)重合体とからなり、その重量比が90:10〜50:50であるため、カルボン酸変性プロピレン(共)重合体の熱封緘温度を低下させる効果を有するにもかかわらず、本発明の熱封緘性接着剤を基材に塗工して得られる蓋材の熱封緘性樹脂層は表面粘着性を示さないので、巻き取りあるいは積層して保存することが可能である。なお、カルボン酸変性プロピレン(共)重合体の有するプロピレン樹脂シートとアルミニウム箔などの金属箔との熱封緘強度を保持する。   Further, the resin mixture is composed of a soluble olefin (co) polymer and a (meth) acrylic acid ester (co) polymer, and the weight ratio thereof is 90:10 to 50:50. The heat-sealing resin layer of the lid material obtained by coating the base material with the heat-sealing adhesive of the present invention despite the effect of reducing the heat-sealing temperature of the (co) polymer has surface tackiness. Since it is not shown, it can be wound up or stacked and stored. The heat sealing strength between the propylene resin sheet of the carboxylic acid-modified propylene (co) polymer and a metal foil such as an aluminum foil is maintained.

本発明の熱封緘性蓋材は、金属箔、特にアルミニウム箔からなる基材の一面に、熱封緘性接着剤を塗工したものであり、塗工時の乾燥温度の低下が可能で、かつ、塗工した蓋材の熱封緘性樹脂層の表面粘着性がなく、ブロッキングの問題がないなど作業性が良好である。また、得られた蓋材はプロピレン樹脂製容器に低温で熱封緘することができるなど、前述の接着剤の作用効果をすべて奏することができる。   The heat-sealing lid material of the present invention is obtained by applying a heat-sealing adhesive to one surface of a base material made of a metal foil, particularly an aluminum foil, and the drying temperature during coating can be lowered, and The heat-sealing resin layer of the coated lid material has no surface stickiness and has good workability such as no blocking problem. Moreover, the obtained lid material can exhibit all the effects of the adhesive described above, such as being able to be heat-sealed in a propylene resin container at a low temperature.

本発明の熱封緘性接着剤は、接着性樹脂成分がカルボン酸変性プロピレン(共)重合体と、可溶性オレフィン(共)重合体および(メタ)アクリル酸エステル(共)重合体からなる樹脂混合物と、溶剤とからなる。   The heat-sealing adhesive of the present invention comprises a resin mixture in which the adhesive resin component is a carboxylic acid-modified propylene (co) polymer, a soluble olefin (co) polymer, and a (meth) acrylic ester (co) polymer. And a solvent.

カルボン酸変性プロピレン(共)重合体としては、プロピレン重合体あるいはプロピレンとエチレン、1‐ブテン等オレフィン類との共重合体を不飽和カルボン酸で変性したものが使用される。この不飽和カルボン酸としては、(無水)マレイン酸、フマール酸、イタコン酸、シトラコン酸などが挙げられ、特に無水マレイン酸が好ましい。   As the carboxylic acid-modified propylene (co) polymer, a propylene polymer or a copolymer of propylene and an olefin such as ethylene and 1-butene modified with an unsaturated carboxylic acid is used. Examples of the unsaturated carboxylic acid include (anhydrous) maleic acid, fumaric acid, itaconic acid, citraconic acid and the like, and maleic anhydride is particularly preferable.

熱封緘性接着剤の接着性樹脂成分中のカルボン酸変性プロピレン(共)重合体の割合は5〜40wt%の範囲が適当である。カルボン酸変性プロピレン(共)重合体の割合が5wt%より低くなると熱封緘強度、特に金属箔に対する熱封緘性が低下し、40wt%を超えると低温熱封緘性を示さなくなる。   The proportion of the carboxylic acid-modified propylene (co) polymer in the adhesive resin component of the heat-sealing adhesive is suitably in the range of 5 to 40 wt%. When the proportion of the carboxylic acid-modified propylene (co) polymer is lower than 5 wt%, the heat sealing strength, particularly the heat sealing performance with respect to the metal foil is lowered, and when it exceeds 40 wt%, the low temperature heat sealing performance is not exhibited.

(メタ)アクリル酸エステル(共)重合体としては、(メタ)アクリル酸のC〜C181価の脂肪族アルコールによるエステル化の(共)重合体が挙げられ、特にメタアクリル酸(イソ)ブチルエステル(共)重合体が好ましい。 Examples of (meth) acrylic acid ester (co) polymers include (co) polymers of esterification of (meth) acrylic acid with C 1 to C 18 monovalent aliphatic alcohols, particularly methacrylic acid (iso ) Butyl ester (co) polymers are preferred.

(メタ)アクリル酸エステル(共)重合体の樹脂混合物中の割合は10〜50wt%とすることが適当である。(メタ)アクリル酸エステル(共)重合体の樹脂混合物中の割合が10wt%未満の場合は、熱封緘性接着剤を基材に塗工して得られる蓋材の熱封緘性樹脂層の表面粘着性が抑制されず、ブロッキング性を示し、50wt%を超えると蓋材の熱封緘性接着強度が低下する。   The proportion of the (meth) acrylic acid ester (co) polymer in the resin mixture is suitably 10 to 50 wt%. When the proportion of the (meth) acrylic acid ester (co) polymer in the resin mixture is less than 10 wt%, the surface of the heat-sealing resin layer of the lid material obtained by coating the base material with a heat-sealing adhesive Adhesiveness is not suppressed, shows blocking properties, and if it exceeds 50 wt%, the heat-sealing adhesive strength of the lid is lowered.

(メタ)アクリル酸エステル(共)重合体のガラス転移点温度(Tg)は10℃以上であり、さらに好ましくは30℃以上である。10℃未満の場合は、蓋材の熱封緘性樹脂層の表面粘着性を抑制できない。   The glass transition temperature (Tg) of the (meth) acrylic acid ester (co) polymer is 10 ° C. or higher, more preferably 30 ° C. or higher. When it is less than 10 ° C., the surface tackiness of the heat-sealing resin layer of the lid cannot be suppressed.

可溶性オレフィン(共)重合体としては、プロピレンおよび1‐ブテンの(共)重合体が好ましく、特にメタロセン系触媒により製造された(共)重合体が適当である。   As the soluble olefin (co) polymer, a (co) polymer of propylene and 1-butene is preferable, and a (co) polymer produced by a metallocene catalyst is particularly suitable.

可溶性オレフィン(共)重合体の樹脂混合物中の割合は90〜50wt%とするのが好ましい。その割合が50wt%未満の場合は蓋材の熱封緘温度の低下効果が得られない。また、90wt%を超える場合は蓋材の表面粘着性が強くなる。   The proportion of the soluble olefin (co) polymer in the resin mixture is preferably 90 to 50 wt%. When the ratio is less than 50 wt%, the effect of lowering the heat sealing temperature of the lid material cannot be obtained. Moreover, when it exceeds 90 wt%, the surface adhesiveness of a lid | cover material becomes strong.

溶剤としては脂肪族および芳香族系の炭化水素類、エステル系、ケトン系、アルコール系等の通常、印刷インキ、塗料、接着剤に使用される溶剤が使用可能で、特に、n‐ヘキサン、シクロヘキサン、メチルシクロヘキサン、エチルシクロヘキサンなどの脂肪族炭化水素を主成分とする溶剤が好ましい。   As solvents, aliphatic and aromatic hydrocarbons, esters, ketones, alcohols, etc., usually used in printing inks, paints and adhesives can be used, especially n-hexane, cyclohexane. Solvents mainly composed of aliphatic hydrocarbons such as methylcyclohexane and ethylcyclohexane are preferred.

本発明の接着剤の製造は、定法により室温または加温下に主原料および各種添加剤等を溶剤中に投入し、攪拌、混合することにより遂行される。溶解温度は特に制限はないが、室温乃至80℃程度の加温状態で行うのが適当である。
基材への塗工法は、グラビアコーター、ロールコーターなどの公知の塗工機が使用されるが、グラビアコーターを使用する場合、均一な塗工が得られやすいので好ましい。
Production of the adhesive of the present invention is carried out by introducing the main raw materials and various additives into a solvent at room temperature or under heating by a conventional method, and stirring and mixing. The melting temperature is not particularly limited, but it is appropriate to carry out the heating at a room temperature to about 80 ° C.
A known coating machine such as a gravure coater or a roll coater is used as a coating method on the substrate. However, when a gravure coater is used, a uniform coating is easily obtained, which is preferable.

上記のようにして製造される熱封緘成接着剤は、基材に塗工することにより、本発明の熱封緘性蓋材となる。基材としては、金属箔、特にアルミニウム箔が用いられる。アルミニウム箔の厚みは通常、7〜50μm程度である。   The heat-sealing adhesive produced as described above becomes the heat-sealing lid material of the present invention by coating on a base material. As the substrate, a metal foil, particularly an aluminum foil is used. The thickness of the aluminum foil is usually about 7 to 50 μm.

表1の実施例及び比較例に記載した配合に基づき、約70℃の加温下に、溶剤のメチルシクロヘキサンへ、カルボン酸変性プロピレン(共)重合体(ユニストールR−300及びユニストールH−100)、プロピレン(共)重合体(タフマーXM−7070及びLICOCENE PP1602)およびポリイソブチルメタアクリル酸エステル(パラロイドB−38)の所定量を添加し、攪拌下に溶解させ、実施例1〜7および比較例1〜4の接着剤を作製した。また、表2には作製した接着剤の接着性樹脂成分の比率を、表3には該接着性樹脂成分中の樹脂混合物中の配合比率を、表4には該樹脂混合物中の可溶性オレフィン(共)重合体の内訳および配合比率を示す。   Based on the formulation described in the Examples and Comparative Examples of Table 1, under heating at about 70 ° C., the solvent was changed to methylcyclohexane and the carboxylic acid-modified propylene (co) polymer (Unistol R-300 and Unistor H- 100), propylene (co) polymer (Tuffmer XM-7070 and LICOCENE PP1602) and a predetermined amount of polyisobutylmethacrylate (paraloid B-38) are added and dissolved under stirring, Examples 1-7 and Adhesives of Comparative Examples 1 to 4 were produced. Table 2 shows the ratio of the adhesive resin component of the produced adhesive, Table 3 shows the compounding ratio in the resin mixture in the adhesive resin component, and Table 4 shows the soluble olefin ( The breakdown and blending ratio of the (co) polymer are shown.

※1:ユニストールR−300[三井化学(株)]
樹脂固形分18wt%、トルエン70wt%、メチルエチルケトン12wt%
※2:ユニストールH−100[三井化学(株)]
樹脂固形分20wt%、メチルシクロヘキサン60wt%、酢酸エチル20wt%
※3:パラロイドB−38[ローム・アンド・ハース社製]
樹脂固形分100wt% Tg.50℃、平均分子量(Mw)60,000
※4:タフマーXM−7070[三井化学(株)]
MFR7g/10min、融点75℃、軟化点67℃
※5:LICOCENE PP 1602[クラリアントジャパン(株)]
軟化点90℃、比重0.88g/cm3、粘度(170℃)7000mPas
※6:メチルシクロヘキサン
* 1: Unistor R-300 [Mitsui Chemicals, Inc.]
Resin solid content 18wt%, toluene 70wt%, methyl ethyl ketone 12wt%
* 2: Unistor H-100 [Mitsui Chemicals, Inc.]
Resin solid content 20wt%, methylcyclohexane 60wt%, ethyl acetate 20wt%
* 3: Paraloid B-38 [Rohm and Haas]
Resin solid content 100 wt% Tg. 50 ° C., average molecular weight (Mw) 60,000
* 4: Tuffmer XM-7070 [Mitsui Chemicals, Inc.]
MFR 7g / 10min, melting point 75 ° C, softening point 67 ° C
* 5: LICOCENE PP 1602 [Clariant Japan Co., Ltd.]
Softening point 90 ° C, specific gravity 0.88g / cm3, viscosity (170 ° C) 7000mPas
* 6: Methylcyclohexane

次に得られた熱封緘性接着剤をバーコーターにより、アルミニウム箔(20μm)の艶消面に塗布し、熱風乾燥炉で180℃で10秒間乾燥し、蓋材の試料片を作成した。この蓋材の試料片の表面粘着性を表5に示す。
前記の熱封緘性接着剤をアルミニウム箔に塗工した蓋材の試料片とプロピレン樹脂シート(住友ベークライト(株)製 NS3451、300μm)とを蓋材の熱封緘性樹脂層がプロピレン樹脂シートと接触するように積層し、蓋材の試料片側からヒートシールバーで熱封緘を行って熱封緘強度試験用の試料を作成した。熱封緘は圧力0.20MPa、圧着時間1秒間の条件下で、それぞれ100℃、120℃、140℃の熱封緘温度で行った。
これら熱封緘試験用試料を幅15mmに裁断したものを熱封緘強度測定用試料片とし、オートグラフ((株)島津製作所機)で、剥離角度180度、剥離速度200mm/分の条件で剥離強度を測定した。その結果を表5に示す。
Next, the obtained heat-sealing adhesive was applied to the matte surface of an aluminum foil (20 μm) with a bar coater and dried at 180 ° C. for 10 seconds in a hot air drying furnace to prepare a sample piece of a lid material. Table 5 shows the surface tackiness of the sample piece of the lid.
A sample piece of a lid material obtained by applying the above heat-sealing adhesive on an aluminum foil and a propylene resin sheet (NS3451, 300 μm, manufactured by Sumitomo Bakelite Co., Ltd.) are in contact with the propylene resin sheet. Then, heat sealing was performed with a heat seal bar from one side of the sample of the lid material to prepare a sample for heat sealing strength test. The heat sealing was performed under the conditions of a pressure of 0.20 MPa and a pressure bonding time of 1 second at heat sealing temperatures of 100 ° C., 120 ° C., and 140 ° C., respectively.
These heat sealing test samples cut to a width of 15 mm were used as heat sealing strength measurement sample pieces, and the peel strength was measured with an autograph (Shimadzu Corporation) at a peeling angle of 180 degrees and a peeling speed of 200 mm / min. Was measured. The results are shown in Table 5.

※1:塗布量の単位は、g/m * 1: Application unit is g / m 2

表5に示すように、実施例1〜7では熱封緘樹脂層の表面粘着は全く見られず、また、熱封緘性接着剤の流展性良好で、均一被膜が得られており、蓋材の耐ブロッキング性も良好であった。
また、熱封緘温度100℃において熱封緘が開始されており、120℃では、いずれも10N/15mm以上の熱封緘強度が得られ、低温熱封緘性が良好であることがわかる。
As shown in Table 5, in Examples 1 to 7, no surface adhesion of the heat-sealing resin layer was observed, the flowability of the heat-sealing adhesive was good, and a uniform film was obtained. The blocking resistance was also good.
In addition, heat sealing has been started at a heat sealing temperature of 100 ° C., and at 120 ° C., a heat sealing strength of 10 N / 15 mm or more is obtained in all cases, indicating that the low temperature heat sealing property is good.

比較例1は、接着性樹脂成分中のカルボン酸変性プロピレン(共)重合体の割合が5wt%未満であるため(表2参照)、必要な熱封緘強度が得られなかった。
比較例2は樹脂混合物において、(メタ)アクリル酸エステル(共)重合体の割合が5wt%未満であるため(表2参照)、熱封緘性樹脂層が表面粘着性を示し、蓋材の積み重ねや巻取りに不適当であった。
比較例3は、接着性樹脂成分中のカルボン酸変性プロピレン(共)重合体の割合が40wt%を超えているため(表2参照)、熱封緘温度100℃では接着性を示さず、120℃でも所要の熱封緘強度を示さず、低温封緘性が十分に得られなかった。
比較例4は樹脂混合物内中の(メタ)アクリル酸エステル(共)重合体の割合が50wt%を超えているため(表2参照)、必要な熱封緘強度が得られなかった。
In Comparative Example 1, since the proportion of the carboxylic acid-modified propylene (co) polymer in the adhesive resin component was less than 5 wt% (see Table 2), the necessary heat sealing strength could not be obtained.
In Comparative Example 2, since the ratio of the (meth) acrylic acid ester (co) polymer is less than 5 wt% in the resin mixture (see Table 2), the heat-sealing resin layer exhibits surface tackiness, and the cover material is stacked. And unsuitable for winding.
In Comparative Example 3, since the proportion of the carboxylic acid-modified propylene (co) polymer in the adhesive resin component exceeds 40 wt% (see Table 2), the adhesiveness is not exhibited at a heat sealing temperature of 100 ° C., and 120 ° C. However, the required heat sealing strength was not exhibited, and the low temperature sealing property was not sufficiently obtained.
Since the ratio of the (meth) acrylic acid ester (co) polymer in the resin mixture exceeded 50 wt% in Comparative Example 4 (see Table 2), the necessary heat sealing strength could not be obtained.

Claims (2)

カルボン酸変性プロピレン(共)重合体5〜40wt%と、樹脂混合物95〜60wt%とからなる接着性樹脂成分と、溶剤とからなり、
前記樹脂混合物が、可溶性オレフィン(共)重合体と、(メタ)アクリル酸エステル(共)重合体とからなり、その重量比が90:10〜50:50である、熱封緘性接着剤。
An adhesive resin component consisting of 5 to 40 wt% of a carboxylic acid-modified propylene (co) polymer and a resin mixture of 95 to 60 wt%, and a solvent,
The heat-sealing adhesive, wherein the resin mixture comprises a soluble olefin (co) polymer and a (meth) acrylic acid ester (co) polymer, and the weight ratio thereof is 90:10 to 50:50.
アルミニウム箔を基材として、その一面に請求項1記載の熱封緘性接着剤を塗工してなる熱封緘性蓋材。 A heat sealable lid material obtained by coating an aluminum foil as a base material with the heat sealable adhesive according to claim 1 on one surface thereof.
JP2007302572A 2007-11-22 2007-11-22 Heat-sealing adhesive and heat-sealing lid material coated with the adhesive Pending JP2009126924A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2007302572A JP2009126924A (en) 2007-11-22 2007-11-22 Heat-sealing adhesive and heat-sealing lid material coated with the adhesive

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2007302572A JP2009126924A (en) 2007-11-22 2007-11-22 Heat-sealing adhesive and heat-sealing lid material coated with the adhesive

Publications (1)

Publication Number Publication Date
JP2009126924A true JP2009126924A (en) 2009-06-11

Family

ID=40818198

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2007302572A Pending JP2009126924A (en) 2007-11-22 2007-11-22 Heat-sealing adhesive and heat-sealing lid material coated with the adhesive

Country Status (1)

Country Link
JP (1) JP2009126924A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4712902B1 (en) * 2010-06-14 2011-06-29 株式会社リーダー Heat-sealing adhesive and heat-sealing lid
US20130011669A1 (en) * 2011-07-08 2013-01-10 Pang-Chia Lu Multi-Layer Films Having Improved Sealing Properties
JP2015093728A (en) * 2013-11-14 2015-05-18 旭化成ケミカルズ株式会社 Lid material for press-through pack package, production method of the same and package
JP2015093727A (en) * 2013-11-14 2015-05-18 旭化成ケミカルズ株式会社 Lid material for press-through pack package and package
JP5875029B1 (en) * 2014-09-17 2016-03-02 Dic株式会社 Laminate adhesive, laminate using the same, and secondary battery
CN106459456A (en) * 2014-03-26 2017-02-22 波士胶股份有限公司 Solvent-based low temperature heat seal coating

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4712902B1 (en) * 2010-06-14 2011-06-29 株式会社リーダー Heat-sealing adhesive and heat-sealing lid
JP2012001576A (en) * 2010-06-14 2012-01-05 Riidaa:Kk Heat sealing adhesive and heat seal nature lid material
US20130011669A1 (en) * 2011-07-08 2013-01-10 Pang-Chia Lu Multi-Layer Films Having Improved Sealing Properties
JP2015093728A (en) * 2013-11-14 2015-05-18 旭化成ケミカルズ株式会社 Lid material for press-through pack package, production method of the same and package
JP2015093727A (en) * 2013-11-14 2015-05-18 旭化成ケミカルズ株式会社 Lid material for press-through pack package and package
CN106459456A (en) * 2014-03-26 2017-02-22 波士胶股份有限公司 Solvent-based low temperature heat seal coating
CN106459456B (en) * 2014-03-26 2019-07-23 波士胶股份有限公司 Solvent-based low temperature heat seal coating
US10563086B2 (en) 2014-03-26 2020-02-18 Bostik, Inc. Solvent-based low temperature heat seal coating
JP5875029B1 (en) * 2014-09-17 2016-03-02 Dic株式会社 Laminate adhesive, laminate using the same, and secondary battery
WO2016042837A1 (en) * 2014-09-17 2016-03-24 Dic株式会社 Laminate adhesive, stack using the same, and secondary battery

Similar Documents

Publication Publication Date Title
JP2009126924A (en) Heat-sealing adhesive and heat-sealing lid material coated with the adhesive
CN106459456A (en) Solvent-based low temperature heat seal coating
JP2020510715A (en) Hot melt pressure sensitive adhesive for clear-on-clear labels
JP2006045313A (en) Aqueous dispersion and aqueous heat-sealing agent
JP5895670B2 (en) Heat-sealable resin composition
JP5848058B2 (en) Contents adhesion prevention lid material and manufacturing method thereof
JP2006299023A (en) Eva hot melt adhesive for polyolefin returnable carton case
JP6451281B2 (en) Heat-sealable resin composition
JP5808235B2 (en) Content adhesion prevention lid
JP5784565B2 (en) Content adhesion prevention lid
JP5019754B2 (en) Adhesive tape and method for producing the same
JP5784333B2 (en) Content adhesion prevention lid
JP3827870B2 (en) Polymer composition and easy-open sealing material using the same
JP2014196143A (en) Easily peelable lid material for polystyrene container
JP5102882B2 (en) Content adhesion prevention lid
JP4526633B2 (en) Polymer composition and easy-open sealing material using the same
JP3957499B2 (en) Coating agent
JPS62939B2 (en)
JP5146082B2 (en) Glass container lid and glass container
JPH0441536A (en) Resin composition
JP4152511B2 (en) Heat-sealing lid material with excellent water resistance for sealing glass containers
JP3689601B2 (en) Paper container and manufacturing method thereof
JP4022685B2 (en) Heat-sealable resin composition, film using the same, and laminate
JPH05154445A (en) Production of heat sealable cap material
JP2019182439A (en) envelope