JP2003246003A - Heat-shrinkable packaging film - Google Patents
Heat-shrinkable packaging filmInfo
- Publication number
- JP2003246003A JP2003246003A JP2003129827A JP2003129827A JP2003246003A JP 2003246003 A JP2003246003 A JP 2003246003A JP 2003129827 A JP2003129827 A JP 2003129827A JP 2003129827 A JP2003129827 A JP 2003129827A JP 2003246003 A JP2003246003 A JP 2003246003A
- Authority
- JP
- Japan
- Prior art keywords
- heat
- shrinkable
- film
- adhesive
- packaging film
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Wrappers (AREA)
- Laminated Bodies (AREA)
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、キャップシール等
に使用する熱収縮性包装用フィルムに関するものであ
る。TECHNICAL FIELD The present invention relates to a heat-shrinkable packaging film used for a cap seal or the like.
【０００２】[0002]
【従来の技術】熱収縮性包装用フィルムとして従来、熱
収縮性フィルムと金属薄膜層を形成してなる非熱収縮性
フィルムとを、多数の線状に塗布した接着剤で接着一体
化したものが知られている（特許文献１及び２参照）。2. Description of the Related Art Conventionally, as a heat-shrinkable packaging film, a heat-shrinkable film and a non-heat-shrinkable film formed by forming a metal thin film layer are bonded and integrated by an adhesive coated in a number of lines. Are known (see Patent Documents 1 and 2).
【０００３】[0003]
【特許文献１】特許第２９３５０１５号公報[Patent Document 1] Japanese Patent No. 2935015
【０００４】[0004]
【特許文献２】実公平６−３８６７６号公報[Patent Document 2] Japanese Utility Model Publication No. 6-38676
【０００５】[0005]
【発明が解決しようとする課題】従来の熱収縮性包装用
フィルムは、瓶の口部のみを包装するキャップシールと
しては、口部全体が周囲の長さにそれ程差がないので、
実用的に使用できた。しかし、被包装体の包装部分の周
囲の長さの中で、最長部分の長さが最短部分の長さの
１．３倍以上にもなると、熱収縮性包装用フィルムの熱
収縮時に、最長部分と最短部分とで大きな収縮率の差が
でるので、熱収縮性包装用フィルム全体できれいにライ
ンが現出し、意匠性に優れた美麗なラインを有する金属
光沢を現出することができなかった。例えば、一升瓶の
口部とスカート部とを一体的に包装する場合に、周囲の
短い口部に合せて包装すると周囲の長いスカート部では
あまり収縮しないのできれいにラインが現出しなく、周
囲の長いスカート部に合せて包装すると周囲の短い口部
では収縮しすぎてやはりきれいにラインが現出しないの
である。すなわち、一升瓶の口部の周囲は約９．４ｃｍ
であるのに対して、スカート部の中間部の周囲は約１
８．８ｃｍであるので、口部からスカート部の中間部ま
でを一体的に包装する場合には、熱収縮性包装用フィル
ム全体できれいにラインが現出しないのである。ちなみ
に、一升瓶の胴体部の周囲は約３３ｃｍである。そし
て、このように熱収縮性包装用フィルム全体できれいに
ラインが現出しないので、金属薄膜層が形成されている
にもかかわらず、意匠性に優れた美麗なラインを有する
金属光沢を現出することができなかったのである。本発
明は、被包装体の包装部分の周囲の長さの中で、最長部
分の長さが最短部分の長さの１．３倍以上であっても、
２．５倍以下であれば、熱収縮性包装用フィルム全体で
きれいにラインが現出し、意匠性に優れた美麗なライン
を有する金属光沢を現出することができる熱収縮性包装
用フィルムを提供するものである。The conventional heat-shrinkable packaging film, as a cap seal that wraps only the mouth of a bottle, does not have much difference in the peripheral length of the mouth.
It was practically usable. However, if the length of the longest part of the circumference of the wrapping part of the package is 1.3 times or more than the length of the shortest part, the longest part of the heat-shrinkable wrapping film will shrink during heat shrinkage. Since there is a large difference in shrinkage ratio between the part and the shortest part, the heat-shrinkable packaging film as a whole showed a clean line and could not show a metallic luster with a beautiful line with excellent design. . For example, when packaging the mouth and skirt of one bottle with the surrounding short skirt, the long skirt will not shrink so much that the line does not appear cleanly and the long skirt around When wrapped according to the part, the lines around the short mouth will shrink too much and the line will not appear cleanly. That is, the circumference of the mouth of one bottle is about 9.4 cm.
However, the circumference of the middle part of the skirt is about 1
Since it is 8.8 cm, when integrally packaging from the mouth to the middle part of the skirt, the line does not appear cleanly in the whole heat-shrinkable packaging film. By the way, the circumference of the body of one bottle is about 33 cm. And, since the lines do not appear cleanly in the entire heat-shrinkable packaging film in this way, even though the metal thin film layer is formed, the metal gloss having a beautiful line with excellent design is revealed. I couldn't do it. The present invention, even if the length of the longest portion is 1.3 times or more the length of the shortest portion in the length of the periphery of the wrapped portion of the packaged object,
Provided that it is 2.5 times or less, the heat shrinkable packaging film can show a clean line as a whole, and can exhibit a metallic luster having a beautiful line with excellent design. To do.
【０００６】[0006]
【課題を解決するための手段】本発明の熱収縮性包装用
フィルムは、厚さ２５〜７５μｍの一軸延伸熱収縮性フ
ィルムと、熱収縮性を有していないか又は熱収縮性フィ
ルムより小さな熱収縮性を有していて、表面に金属薄膜
層を形成してなる厚さ６〜２５μｍの二軸延伸非熱収縮
性フィルムとを、複数列のライン状の接着部により一体
化してライン状の接着部と非接着部とを交互に配列した
熱収縮性包装用フィルムであって、下記のイ〜ハの条件
を全て満足することを特徴とする熱収縮性包装用フィル
ムである。
イ．接着部の幅が０．６〜４ｍｍである。
ロ．接着部と非接着部の幅の比率が１：３〜３：２であ
る。
ハ．接着部と非接着部の繰り返し単位が２〜１６ｍｍで
ある。The heat-shrinkable packaging film of the present invention comprises a uniaxially stretched heat-shrinkable film having a thickness of 25 to 75 μm, and a film having no heat-shrinkable property or smaller than the heat-shrinkable film. A biaxially stretched non-heat-shrinkable film having heat shrinkability and having a metal thin film layer formed on the surface and having a thickness of 6 to 25 μm is integrated by a plurality of rows of linear adhesive parts to form a linear shape. Is a heat-shrinkable packaging film in which the adhesive portions and the non-adhesive portions are alternately arranged, and is a heat-shrinkable packaging film characterized by satisfying all the following conditions a to c. I. The width of the bonded portion is 0.6 to 4 mm. B. The width ratio of the bonded portion and the non-bonded portion is 1: 3 to 3: 2. C. The repeating unit of the bonded portion and the non-bonded portion is 2 to 16 mm.
【０００７】本発明の熱収縮性包装用フィルムをキャッ
プシールに使用する場合、熱収縮性フィルム側を外側又
は内側として使用できる。熱収縮性フィルム側を外側又
は内側として、筒状に形成し、該筒状体を瓶の口部とス
カート部に当て、熱収縮させることにより、瓶の口部か
らスカート部にかけて意匠性に優れた美麗なラインを有
する金属光沢を現出した包装が、非常に密着性よく、可
能となる。When the heat-shrinkable packaging film of the present invention is used for a cap seal, the heat-shrinkable film side can be used as the outer side or the inner side. The heat-shrinkable film side is outside or inside, and is formed into a tubular shape, and the tubular body is applied to the mouth and skirt of the bottle and heat-shrinked to provide excellent design from the mouth to the skirt of the bottle. A package with a beautiful metallic line and exhibiting a metallic luster is possible with very good adhesion.
【０００８】熱収縮性フィルムは、塩化ビニル、ポリプ
ロピレン、ポリスチレン、ポリエチレンテレフタレート
等のポリエステル、ポリ塩化ビニリデン、ポリカーボネ
ート、等々の各種のプラスチックからなる従来公知の熱
収縮性フィルムが使用できる。熱収縮性フィルムは、透
明不透明を問わず、また、表面にヘアーライン、マッ
ト、エンボス等の各種の凹凸を施したものでもよい。熱
収縮性フィルムは、厚さ２５〜７５μｍ、好ましくは厚
さ３０〜７０μｍの一軸延伸フィルムを使用する。この
ような熱収縮性フィルムでないと、意匠性に優れた美麗
なラインを有する金属光沢を現出し辛くなる。As the heat-shrinkable film, conventionally known heat-shrinkable films made of various plastics such as vinyl chloride, polypropylene, polystyrene, polyesters such as polyethylene terephthalate, polyvinylidene chloride, polycarbonate and the like can be used. The heat-shrinkable film may be transparent or opaque, and may have various irregularities such as a hairline, a mat, and an embossed surface. As the heat shrinkable film, a uniaxially stretched film having a thickness of 25 to 75 μm, preferably 30 to 70 μm is used. If it is not such a heat-shrinkable film, it will be difficult to produce a metallic luster having a beautiful line with excellent design.
【０００９】非熱収縮性フィルムは、熱収縮性を有して
いないか又は熱収縮性フィルムより小さな熱収縮性を有
していて、ポリエステル、ナイロン等の各種のプラスチ
ックからなる、従来公知の非熱収縮性フィルムが使用で
きる。非熱収縮性フィルムは、厚さ６〜２５μｍ、好ま
しくは厚さ９〜１９μｍの二軸延伸フィルムを使用す
る。このような非熱収縮性フィルムでないと、意匠性に
優れた美麗なラインを有する金属光沢を現出し辛くな
る。The non-heat-shrinkable film has no heat-shrinkable property or has a heat-shrinkable property smaller than that of the heat-shrinkable film and is made of various plastics such as polyester and nylon. A heat shrinkable film can be used. As the non-heat-shrinkable film, a biaxially stretched film having a thickness of 6 to 25 μm, preferably 9 to 19 μm is used. If it is not such a non-heat-shrinkable film, it will be difficult to reveal a metallic luster having a beautiful line with excellent design.
【００１０】非熱収縮性フィルムは、表面に金属薄膜層
を形成する。金属薄膜層は、真空蒸着、スパッタリン
グ、イオンプレーティング等の従来公知の薄膜形成法で
形成できる。金属薄膜層の形成に際しては、アンカーコ
ート等の各種の前処理や、トップコート等の各種の後処
理をすることもできる。表面に金属薄膜層を形成してな
る非熱収縮性フィルムは、全面的又は部分的に印刷層を
形成したプラスチックフィルム、着色層を形成する等し
て適宜の着色をしたプラスチックフィルム、ホログラム
加工をしたプラスチックフィルム等の全てを含むもので
ある。The non-heat-shrinkable film forms a metal thin film layer on the surface. The metal thin film layer can be formed by a conventionally known thin film forming method such as vacuum deposition, sputtering, or ion plating. In forming the metal thin film layer, various pretreatments such as anchor coating and various posttreatments such as top coating can be performed. The non-heat-shrinkable film formed by forming a metal thin film layer on the surface is a plastic film on which a printing layer is wholly or partially formed, a plastic film which is appropriately colored by forming a coloring layer, and a hologram processing. It includes all plastic films and the like.
【００１１】熱収縮性フィルムと非熱収縮性フィルムと
の接着一体化は、例えば、熱収縮性フィルム又は非熱収
縮性フィルムの片面に、ロールコーティング等により接
着剤を複数列のライン状に塗布した後、熱収縮性フィル
ムと非熱収縮性フィルムとを貼り合せることにより行う
ことができる。この接着一体化によりライン状の接着部
と非接着部とを交互に配列してなる熱収縮性包装用フィ
ルムを得ることができる。ライン状の接着部には、直線
状の接着部、波線状の接着部、山形線状の接着部等の各
種の線状の接着部を全て含み、非接着部の具体的形状は
接着部の具体的形状に対応してできあがる。Adhesion and integration of the heat-shrinkable film and the non-heat-shrinkable film is performed, for example, by applying the adhesive in a plurality of lines in a line on one surface of the heat-shrinkable film or the non-heat-shrinkable film by roll coating or the like. After that, the heat-shrinkable film and the non-heat-shrinkable film can be bonded together. By this adhesive integration, a heat-shrinkable packaging film in which linear adhesive portions and non-adhesive portions are alternately arranged can be obtained. The line-shaped adhesive part includes all kinds of linear adhesive parts such as a linear adhesive part, a wavy-line adhesive part, and a chevron-shaped adhesive part. Finished according to the specific shape.
【００１２】本発明では、接着部の幅は０．６〜４ｍｍ
とする。接着部の幅がこれより広くても狭くても、収縮
したときにシワが入ったり、きれいなラインが途切れた
りして、意匠性に優れた美麗なラインを有する金属光沢
を現出し辛くなる。In the present invention, the width of the adhesive portion is 0.6 to 4 mm.
And Whether the width of the bonded portion is wider or narrower than this, wrinkles occur when it contracts, or a clean line is cut off, which makes it difficult to reveal a metallic luster having a beautiful line with excellent design.
【００１３】非接着部の幅は、接着部の幅と非接着部の
幅との比率で定まる。すなわち、接着部と非接着部の幅
の比率は１：３〜３：２とする。このようにしないと、
被包装体の包装部分の周囲の長さの中で、最長部分の長
さが最短部分の長さの１．３倍以上２．５倍以下の場合
に、熱収縮性包装用フィルム全体できれいにラインが現
出し、意匠性に優れた美麗なラインを有する金属光沢を
現出することができない。非接着部の幅は上記の比率か
ら求めると、接着部の幅が０．６ｍｍのときは１．８〜
０．４ｍｍとなり、接着部の幅が４ｍｍのときは１２〜
２．７ｍｍとなる。しかし、本発明では、接着部と非接
着部の幅の比率は１：３〜３：２の範囲で、後に説明す
るように、接着部と非接着部の繰り返し単位（一本の接
着部と一本の非接着部の合計幅）が２〜１６ｍｍである
という条件を満たす必要があるので、接着部と非接着部
の幅は具体的には、比率と繰り返し単位の二つの条件か
ら定まる。従って、例えば、接着部の幅が０．６ｍｍの
ときの非接着部の幅は、最高で１．８ｍｍであるが（こ
のときの比率は１：３）、繰り返し単位２ｍｍという条
件を満たすには最低でも１．４ｍｍは必要となるのであ
る（この場合の比率は１：２．３）。The width of the non-bonded portion is determined by the ratio of the width of the bonded portion and the width of the non-bonded portion. That is, the ratio of the width of the bonded portion to the width of the non-bonded portion is 1: 3 to 3: 2. If you don't do this
If the length of the longest part is 1.3 times or more and 2.5 times or less of the length of the shortest part of the circumference of the packaging part of the packaged object, clean the entire heat-shrinkable packaging film. The line appears, and the metallic luster having a beautiful line with excellent design cannot be exhibited. The width of the non-bonded portion is calculated from the above ratio, and is 1.8 to when the width of the bonded portion is 0.6 mm.
0.4 mm, 12 to 12 when the width of the bonded part is 4 mm
It becomes 2.7 mm. However, in the present invention, the width ratio of the adhesive portion and the non-adhesive portion is in the range of 1: 3 to 3: 2, and as will be described later, the repeating unit of the adhesive portion and the non-adhesive portion (one adhesive portion and Since it is necessary to satisfy the condition that the total width of one non-adhesive part is 2 to 16 mm, the widths of the adhesive part and the non-adhesive part are specifically determined from two conditions of the ratio and the repeating unit. Therefore, for example, when the width of the bonded portion is 0.6 mm, the width of the non-bonded portion is 1.8 mm at the maximum (the ratio at this time is 1: 3), but the condition that the repeating unit is 2 mm is satisfied. At least 1.4 mm is required (the ratio in this case is 1: 2.3).
【００１４】本発明では、接着部と非接着部の繰り返し
単位は２〜１６ｍｍとする。このようにしないと、やは
り、被包装体の包装部分の周囲の長さの中で、最長部分
の長さが最短部分の長さの１．３倍以上２．５倍以下の
場合に、熱収縮性包装用フィルム全体できれいにライン
が現出し、意匠性に優れた美麗なラインを有する金属光
沢を現出することができない。接着部と非接着部の繰り
返し単位が２ｍｍより小さいと、接着剤の非接着部への
「はみだし」が生じてラインがくずれ、また、センター
シール（キャップシール用の筒状体を製造する際の端部
の貼り合わせ）時に、フィルムの破袋も発生する危険性
がある。また、接着部と非接着部の繰り返し単位が１６
ｍｍより大きいと、被包装体の包装部分の周囲の長さの
中で、長さが比較的に短い部分で、その部分全体が非常
にシワが入りやすい。In the present invention, the repeating unit of the adhesive portion and the non-adhesive portion is 2 to 16 mm. Otherwise, if the length of the longest part is 1.3 times or more and 2.5 times or less the length of the shortest part of the circumference of the wrapped part of the packaged object, the heat The entire shrinkable packaging film reveals a clean line, and it is not possible to develop a metallic luster having a beautiful line with excellent design. If the repeating unit of the adhesive portion and the non-adhesive portion is smaller than 2 mm, the adhesive "sticks out" to the non-adhesive portion, the line is broken, and the center seal (when manufacturing a tubular body for a cap seal is used). At the time of bonding the edges), there is a risk that the film may be broken. In addition, the repeating unit of adhesive and non-adhesive parts is 16
When it is larger than mm, the entire length of the periphery of the wrapped portion of the packaged object is a relatively short portion, and the entire portion is easily wrinkled.
【００１５】本発明は、通常、例えば５００〜１０００
ｍｍ幅の長尺なものをロール巻きしているが、被包装体
の包装に実際に使用するには、最初にキャプシール等に
必要な長さに裁断し、その後例えば熱収縮性フィルムを
外側にしてセンターシールにより筒状に形成したものを
使用してもよく、また、最初にロール巻きのものを例え
ば熱収縮性フィルムを外側にしてセンターシールにより
筒状に形成し、その後筒状に形成したものをキャプシー
ル等に必要な長さに裁断して使用してもよい。しかし、
後者の使用方法の場合には、筒状に形成する等の後加工
の際に、熱収縮性包装用フィルムが複数本のロールで挟
持されて移動するので、非接着部に存在しているわずか
な空気がロールにより移動し集積され、非接着部が膨れ
たり、熱収縮性フィルムと非熱収縮性フィルムとが剥離
したりしやすい。後加工として適宜の印刷を施す場合も
同様である。このような後加工の際に非接着部が膨れた
り、熱収縮性フィルムと非熱収縮性フィルムとが剥離し
たりするのを防止するには、非接着部に細孔を設けてお
けばよい。The present invention is typically 500 to 1000, for example.
A long product with a width of mm is rolled, but in order to actually use it to wrap a packaged product, first cut it to the length necessary for cap seal, etc., and then, for example, heat shrinkable film on the outside. It is also possible to use the one formed into a tubular shape by the center seal, or the rolled material is first formed into a tubular shape by the center seal with the heat-shrinkable film outside, and then formed into a tubular shape. The cut product may be cut into a length necessary for a cap seal or the like and used. But,
In the case of the latter method of use, the heat-shrinkable packaging film moves while being sandwiched by a plurality of rolls during post-processing such as forming into a tubular shape. The air is easily moved and accumulated by the rolls, the non-adhesive portion is swollen, and the heat-shrinkable film and the non-heat-shrinkable film are easily peeled off. The same applies when appropriate printing is performed as post-processing. In order to prevent the non-adhesive part from swelling or peeling off the heat-shrinkable film from the non-heat-shrinkable film during such post-processing, pores may be provided in the non-adhesive part. .
【００１６】すなわち、本発明では、熱収縮性フィルム
と非熱収縮性フィルムのいずれか一方又は両方の非接着
部に、細孔を多数設けておくと、ロール巻きの後加工の
際に、非接着部が膨れたり、熱収縮性フィルムと非熱収
縮性フィルムとが剥離したりすることがない。但し、本
発明は、被包装体の包装部分の周囲の長さの中で、最長
部分の長さが最短部分の長さの１．３倍以上であって
も、２．５倍以下であれば、熱収縮性包装用フィルム全
体できれいにラインが現出し、意匠性に優れた美麗なラ
インを有する金属光沢を現出することができる熱収縮性
包装用フィルムを提供するために、
イ．接着部の幅が０．６〜４ｍｍである
ロ．接着部と非接着部の幅の比率が１：３〜３：２であ
る
ハ．接着部と非接着部の繰り返し単位が２〜１６ｍｍで
ある
上記のイ〜ハの条件を全て満足する必要があるので、か
かる条件の下では、単に多数の細孔を設ければよいわけ
ではなく、一定の条件を満足した多数の細孔でないと、
ロール巻きの後加工の際に、非接着部が膨れたり、熱収
縮性フィルムと非熱収縮性フィルムとが剥離したりす
る。That is, in the present invention, if a large number of pores are provided in the non-adhesive portion of either one or both of the heat-shrinkable film and the non-heat-shrinkable film, it is possible to prevent non-adhesion during post-rolling. The adhesive portion does not swell and the heat-shrinkable film and the non-heat-shrinkable film do not peel off. However, in the present invention, the length of the longest part is 2.5 times or less, even if the length of the longest part is 1.3 times or more of the length of the shortest part in the perimeter of the packaging part of the packaged object. For example, in order to provide a heat-shrinkable packaging film capable of revealing lines cleanly in the whole heat-shrinkable packaging film and exhibiting a metallic luster having a beautiful line with excellent design, a. The width of the bonded portion is 0.6 to 4 mm. The ratio of the width of the bonded portion to the width of the non-bonded portion is 1: 3 to 3: 2. Since it is necessary to satisfy all of the above conditions (1) to (3) in which the repeating unit of the bonded portion and the non-bonded portion is 2 to 16 mm, it is not necessary to simply provide a large number of pores under such conditions. , If there are not many pores that satisfy certain conditions,
At the time of post-processing of roll winding, the non-adhesive portion may swell, or the heat-shrinkable film and the non-heat-shrinkable film may separate.
【００１７】すなわち、本発明では、非接着部に多数設
けた細孔の数が、一本の非接着部の長さ３０ｃｍ中に２
０〜１５０個、好ましくは２５〜９０個であり、しか
も、細孔間の距離が、ライン方向に最長で２００ｃｍを
超えない、好ましくは１００ｃｍを超えないものである
場合には、ロール巻きの後加工の際に非接着部が膨れた
り、熱収縮性フィルムと非熱収縮性フィルムとが剥離し
たりすることがないものである。That is, in the present invention, the number of pores provided in the non-adhesive portion is 2 in a length of 30 cm of one non-adhesive portion.
When the number of pores is 0 to 150, preferably 25 to 90, and the distance between the pores does not exceed 200 cm at the longest in the line direction, preferably does not exceed 100 cm, after rolling. The non-adhesive part does not swell during processing and the heat-shrinkable film and the non-heat-shrinkable film do not peel off.
【００１８】細孔は、針等の各種の突起物による物理的
機械的な穿孔方法や、放電加工方法等適宜の手段で設け
ることができる。The pores can be provided by an appropriate means such as a physical mechanical punching method using various projections such as needles, an electric discharge machining method, or the like.
【００１９】本発明では、熱収縮性フィルムと非熱収縮
性フィルムとの密着力は、Ｔ型剥離試験で５０ｇ／１５
ｍｍ超過とする。密着力が５０ｇ／１５ｍｍ以下である
と、ロール巻きの後加工の際や熱収縮時に、熱収縮性フ
ィルムと非熱収縮性フィルムとが剥離する。本発明で
は、熱収縮性フィルムと非熱収縮性フィルムの種類や厚
さ、使用する接着剤の種類、接着部と非接着部の幅や比
率、等々により密着力を適宜選択できるが、Ｔ型剥離試
験で５０〜１０００ｇ／１５ｍｍ程度が好ましい。In the present invention, the adhesion between the heat-shrinkable film and the non-heat-shrinkable film is 50 g / 15 in the T-type peel test.
mm is exceeded. When the adhesive force is 50 g / 15 mm or less, the heat-shrinkable film and the non-heat-shrinkable film are separated from each other during post-rolling processing or heat shrinkage. In the present invention, the adhesive force can be appropriately selected depending on the type and thickness of the heat-shrinkable film and the non-heat-shrinkable film, the type of adhesive used, the width and ratio of the adhesive portion and the non-adhesive portion, and the like. In the peel test, it is preferably about 50 to 1000 g / 15 mm.
【００２０】このように、本発明は、上記した多くの条
件を満足した熱収縮性包装用フィルムとすることによ
り、被包装体の包装部分の周囲の長さの中で、最長部分
の長さが最短部分の長さの１．３倍以上２．５倍以下の
場合に、熱収縮性包装用フィルム全体できれいにライン
が現出し、意匠性に優れた美麗なラインを有する金属光
沢を現出することができる熱収縮性包装用フィルムを提
供することができたものである。そして、熱収縮性フィ
ルムと非熱収縮性フィルムのいずれか一方又は両方の非
接着部に細孔を、上記した条件を満足して多数設けた場
合には、ロール巻きの後加工の際に、非接着部が膨れた
り、熱収縮性フィルムと非熱収縮性フィルムとが剥離し
たりすることがない。As described above, according to the present invention, by providing a heat-shrinkable packaging film which satisfies the above-mentioned many conditions, the length of the longest portion of the length of the periphery of the packaging portion of the object to be packaged. When the length is 1.3 times or more and 2.5 times or less of the length of the shortest part, a line appears cleanly in the entire heat-shrinkable packaging film, and a metallic luster with a beautiful line with excellent design appears. It was possible to provide a heat-shrinkable packaging film that can be manufactured. Then, one or both of the heat-shrinkable film and the non-heat-shrinkable film have pores in the non-adhesive part, and when a large number are provided satisfying the above-mentioned conditions, during the post-processing of the roll winding, The non-adhesive part does not swell and the heat-shrinkable film and the non-heat-shrinkable film do not peel off.
【００２１】[0021]
【発明の実施の形態】次に実施例に基づいて本発明をさ
らに詳しく説明する。ただし、本発明は、これらの実施
例に限定されるものではない。BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in more detail based on the following examples. However, the present invention is not limited to these examples.
【００２２】[0022]
【実施例１】厚さ９μｍの二軸延伸ポリエステルフィル
ムの片面に、金属薄膜層として厚さ４５０Åのアルミニ
ウム蒸着層を設け、該アルミニウム蒸着層の上にメラミ
ン系樹脂に染料で黄色に着色した塗料をグラビアコータ
ーにより厚さ１μｍの厚さにコーティングして着色層を
形成した（着色金属光沢非熱収縮性フィルム）。更に、
７０％の収縮率を示す厚さ５０μｍ熱収縮性フィルム
（三菱樹脂社製の一軸延伸熱収縮性ポリエチレンテレフ
タレートフィルム：ヒシペットＬＸ−１０）に幅１．３
ｍｍの接着部と幅１．５ｍｍの非接着部を交互に配列し
たグラビアコーターにて、接着剤（東洋モートン社製の
ポリエステル：ＡＤ−５２７と、武田薬品工業社製のポ
リエステル：タケダＡ−９７５と、武田薬品工業社製の
ポリイソシアネート：Ａ−３を重量比率で７：７：１の
割合で混合したもの）を、接着部の塗布量（接着部のみ
の実質的な乾燥重量）が３ｇ／ｍ２となるように塗布
し、着色金属光沢非熱収縮性フィルムの着色層面側とラ
ミネートすることにより、複数列のライン状の接着部に
より一体化してライン状の接着部と非接着部とを交互に
配列した、繰り返し単位が２．８ｍｍである熱収縮性包
装用フィルムを得た。得られた熱収縮性包装用フィルム
の密着力は、Ｔ型剥離試験で９７ｇ／１５ｍｍであっ
た。得られた熱収縮性包装用フィルムは、熱収縮性フィ
ルム上に、接着部と非接着部とが縦縞状に存在する接着
剤層を介して、表面に金属薄膜層を有する非熱収縮性フ
ィルムが積層されているものであり、該金属薄膜層を有
する非熱収縮性フィルムの熱収縮性フィルム面側には黄
色の着色層が存在する、金色の美しい金属光沢あるもの
であった。すなわち、得られた熱収縮性包装用フィルム
は、熱収縮性フィルム側から見て金色の美しい金属光沢
あるものであった。次いで、得られた熱収縮性包装用フ
ィルムの非接着部の長さ３０ｃｍ中に５０個の割合で、
細孔を多数の針により設けた。このときの細孔間の距離
は、ライン方向に最長で２５ｃｍを超えないものであっ
た。このようにして得た熱収縮性包装用フィルムを、熱
収縮性を示す方向が円周となるように、熱収縮性フィル
ムを外側にして、センターシールにより筒状に形成し、
該筒状にしたものを一升瓶の口部からスカート部の中間
部までを一体的にキャップシールして包装できる長さに
裁断して、所望の長さの筒状の熱収縮性包装用フィルム
を得た。この後加工の際には、熱収縮性包装用フィルム
の非接着部が膨れたり、熱収縮性フィルムと非熱収縮性
フィルムとが剥離したりすることが全くなかった。得ら
れた所望の長さの筒状の熱収縮性包装用フィルムを、周
囲約９．４ｃｍである一升瓶の口部から、周囲約１８．
８ｃｍである一升瓶のスカート部の中間部までを一体的
に包装するように熱収縮させてキャップシールしたとこ
ろ、被包装体の包装部分の周囲の長さの中で、最長部分
の長さが最短部分の長さの約２倍であるにもかかわら
ず、熱収縮性包装用フィルム全体できれいにラインが現
出し、意匠性に優れた美麗なラインを有する金属光沢を
現出することができた。Example 1 An aluminum vapor deposition layer having a thickness of 450Å was provided as a metal thin film layer on one surface of a biaxially stretched polyester film having a thickness of 9 μm, and a melamine resin was colored yellow with a dye on the aluminum vapor deposition layer. Was coated with a gravure coater to a thickness of 1 μm to form a colored layer (colored metallic luster non-heat-shrinkable film). Furthermore,
A heat shrinkable film having a thickness of 50 μm and a shrinkage ratio of 70% (uniaxially stretched heat shrinkable polyethylene terephthalate film: HISHIPET LX-10 manufactured by Mitsubishi Plastics Co., Ltd.) has a width of 1.3.
In a gravure coater in which a mm-bonded portion and a non-bonded portion having a width of 1.5 mm are alternately arranged, an adhesive (polyester manufactured by Toyo Morton Co .: AD-527 and polyester manufactured by Takeda Pharmaceutical Co., Ltd .: Takeda A-975) is used. And a mixture of polyisocyanate: A-3 manufactured by Takeda Pharmaceutical Co., Ltd. in a weight ratio of 7: 7: 1), and the coating amount of the adhesive portion (substantially dry weight of only the adhesive portion) is 3 g. / M 2 and is laminated on the colored layer surface side of the colored metallic luster non-heat-shrinkable film so that a plurality of lines of linear adhesive portions are integrated to form linear adhesive portions and non-adhesive portions. To obtain a heat-shrinkable packaging film having a repeating unit of 2.8 mm. The adhesive force of the obtained heat-shrinkable packaging film was 97 g / 15 mm in the T-type peel test. The obtained heat-shrinkable packaging film is a non-heat-shrinkable film having a metal thin film layer on the surface of the heat-shrinkable film via an adhesive layer in which adhesive parts and non-adhesive parts are present in vertical stripes. Was laminated, and a yellow colored layer was present on the heat-shrinkable film surface side of the non-heat-shrinkable film having the metal thin film layer, which had a beautiful golden metallic luster. That is, the obtained heat-shrinkable packaging film had a beautiful golden metallic luster when viewed from the heat-shrinkable film side. Then, at a ratio of 50 in the length of 30 cm of the non-adhesive part of the obtained heat-shrinkable packaging film,
The pores were provided by multiple needles. The distance between the pores at this time did not exceed 25 cm in the line direction at the longest. The heat-shrinkable packaging film obtained in this manner, so that the direction showing the heat-shrinkability is the circumference, with the heat-shrinkable film on the outside, formed into a tubular shape by the center seal,
The tubular product is cut into a length capable of being packaged by integrally cap-sealing the mouth portion of the bottle to the middle portion of the skirt portion to obtain a tubular heat-shrinkable packaging film having a desired length. Obtained. During this post-processing, neither the non-adhesive part of the heat-shrinkable packaging film was swollen nor the heat-shrinkable film and the non-heat-shrinkable film were peeled off. The obtained tubular heat-shrinkable packaging film having a desired length was obtained from the mouth of one bottle having a circumference of about 9.4 cm to a circumference of about 18.
When the heat-shrinkable cap is sealed so as to integrally package up to the middle of the skirt of the one-bottle, which is 8 cm, the longest part of the circumference of the wrapped part of the packaged object has the shortest length. Even though the length was about twice the length of the portion, the line clearly appeared in the entire heat-shrinkable packaging film, and the metallic luster having a beautiful line excellent in design was able to appear.
【００２３】[0023]
【比較例１】実施例１における接着部の幅を０．７ｍｍ
とし非接着部の幅を１．０ｍｍとしたほかは実施例１と
同様にして、ライン状の接着部と非接着部とを交互に配
列した、繰り返し単位が１．７ｍｍである熱収縮性包装
用フィルムを得た。得られた熱収縮性包装用フィルムの
密着力は、Ｔ型剥離試験で８６ｇ／１５ｍｍであった。
次いで、実施例１と同様の細孔を設けた。このようにし
て得た熱収縮性包装用フィルムを使用し、実施例１と同
様にして、一升瓶の口部からスカート部の中間部までを
一体的に包装するように熱収縮させてキャップシールし
たところ、接着剤の接着部への「はみだし」が生じてラ
インがくずれ、意匠性に優れた美麗なラインを有する金
属光沢を現出することができなかった。[Comparative Example 1] The width of the adhesive portion in Example 1 was 0.7 mm.
In the same manner as in Example 1 except that the width of the non-adhesive portion was 1.0 mm, the heat-shrinkable packaging in which the linear adhering portion and the non-adhesive portion were alternately arranged and the repeating unit was 1.7 mm. A film for use was obtained. The adhesion of the obtained heat-shrinkable packaging film was 86 g / 15 mm in the T-type peel test.
Then, the same pores as in Example 1 were provided. Using the heat-shrinkable packaging film thus obtained, in the same manner as in Example 1, heat-shrinkable and cap-sealed so as to integrally package from the mouth of one container to the middle of the skirt. However, the "sticking out" of the adhesive to the bonded portion occurred and the line was broken, and it was not possible to reveal a metallic luster having a beautiful line excellent in design.
【００２４】[0024]
【実施例２】厚さ１２μｍの二軸延伸ポリエステルフィ
ルムの片面に、金属薄膜層として厚さ４５０Åのアルミ
ニウム蒸着層を設け、該アルミニウム蒸着層の上にメラ
ミン系樹脂に染料で黄色に着色した塗料をグラビアコー
ターにより厚さ１μｍの厚さにコーティングして着色層
を形成した（着色金属光沢非熱収縮性フィルム）。更
に、６０％の収縮率を示す厚さ６０μｍ熱収縮性フィル
ム（三菱樹脂社製の一軸延伸ポリ塩化ビニルフィルム：
ヒシレックス５０３）に幅２．０ｍｍの接着部と幅１．
６ｍｍの非接着部を交互に配列したグラビアコーターに
て、接着剤（東洋モートン社製のポリエステル：ＡＤ−
５２７と、武田薬品工業社製のポリエステル：タケダＡ
−９７５と、武田薬品工業社製のポリイソシアネート：
Ａ−３を重量比率で７：７：１の割合で混合したもの）
を、接着部の塗布量（接着部のみの実質的な乾燥重量）
が３ｇ／ｍ２となるように塗布し、着色金属光沢非熱収
縮性フィルムの着色層面側とラミネートすることによ
り、複数列のライン状の接着部により一体化してライン
状の接着部と非接着部とを交互に配列した、繰り返し単
位が３．６ｍｍである熱収縮性包装用フィルムを得た。
得られた熱収縮性包装用フィルムの密着力は、Ｔ型剥離
試験で１０５ｇ／１５ｍｍであった。得られた熱収縮性
包装用フィルムは、実施例１と同様に、熱収縮性フィル
ム側から見て金色の美しい金属光沢あるものであった。
次いで、得られた熱収縮性包装用フィルムの非接着部の
長さ３０ｃｍ中に３０個の割合で、細孔を多数の針によ
り設けた。このときの細孔間の距離は、ライン方向に最
長で２０ｃｍを超えないものであった。このようにして
得た熱収縮性包装用フィルムを使用し、実施例１と同様
にして、一升瓶の口部からスカート部の中間部までを一
体的に包装するように熱収縮させてキャップシールした
ところ、熱収縮性包装用フィルム全体できれいにライン
が現出し、意匠性に優れた美麗なラインを有する金属光
沢を現出することができた。Example 2 An aluminum vapor deposition layer having a thickness of 450Å was provided as a metal thin film layer on one surface of a biaxially stretched polyester film having a thickness of 12 μm, and a melamine resin was colored yellow with a dye on the aluminum vapor deposition layer. Was coated with a gravure coater to a thickness of 1 μm to form a colored layer (colored metallic luster non-heat-shrinkable film). Further, a heat-shrinkable film having a thickness of 60 μm showing a shrinkage ratio of 60% (a uniaxially stretched polyvinyl chloride film manufactured by Mitsubishi Plastics:
Hishirex 503) with a 2.0 mm wide adhesive section and a width of 1.
Using a gravure coater in which 6 mm non-adhesive parts are alternately arranged, an adhesive (polyester manufactured by Toyo Morton Co .: AD-
527 and polyester manufactured by Takeda Pharmaceutical Co., Ltd .: Takeda A
-975 and polyisocyanate manufactured by Takeda Pharmaceutical Co., Ltd .:
A-3 mixed in a weight ratio of 7: 7: 1)
Is the application amount of the adhesive part (substantial dry weight of the adhesive part only)
To 3 g / m 2 and laminated with the colored layer surface side of the colored metallic luster non-heat-shrinkable film, so that it is integrated by a plurality of rows of linear adhesive parts and is not adhered to the linear adhesive parts. A heat-shrinkable packaging film having a repeating unit of 3.6 mm in which parts and parts are alternately arranged was obtained.
The adhesion of the obtained heat-shrinkable packaging film was 105 g / 15 mm in the T-type peel test. The obtained heat-shrinkable packaging film had a beautiful golden metallic luster when viewed from the heat-shrinkable film side, as in Example 1.
Next, 30 pores were provided in a length of 30 cm of the non-adhesive part of the obtained heat-shrinkable packaging film by a large number of needles. The distance between the pores at this time did not exceed 20 cm in the line direction at the longest. Using the heat-shrinkable packaging film thus obtained, in the same manner as in Example 1, heat-shrinkable and cap-sealed so as to integrally package from the mouth of one container to the middle of the skirt. However, it was possible to reveal lines cleanly in the entire heat-shrinkable packaging film, and to reveal a metallic luster having a beautiful line excellent in design.
【００２５】[0025]
【発明の効果】本発明は上記のように構成したから、被
包装体の包装部分の周囲の長さの中で、最長部分の長さ
が最短部分の長さの１．３倍以上であっても、２．５倍
以下であれば、熱収縮性包装用フィルム全体できれいに
ラインが現出し、意匠性に優れた美麗なラインを有する
金属光沢を現出することができる熱収縮性包装用フィル
ムを提供することができた。また、本発明は、非接着部
に細孔を多数設け、その場合の細孔の数が、一本の非接
着部の長さ３０ｃｍ中に２０〜１５０個、好ましくは２
５〜９０個であり、しかも、細孔間の距離が、ライン方
向に最長で２００ｃｍを超えない、好ましくは１００ｃ
ｍを超えないものである場合には、ロール巻きの後加工
の際に、非接着部が膨れたり、熱収縮性フィルムと非熱
収縮性フィルムとが剥離したりすることがないものであ
る。Since the present invention is constructed as described above, the length of the longest portion of the circumference of the packaging portion of the package is 1.3 times or more the length of the shortest portion. However, if it is 2.5 times or less, the line can be clearly displayed in the entire heat-shrinkable packaging film, and the metallic luster having a beautiful line with excellent design can be displayed. I was able to provide a film. Further, in the present invention, a large number of pores are provided in the non-adhesive portion, and the number of pores in that case is 20 to 150, preferably 2 in a length of 30 cm of one non-adhesive portion.
5 to 90, and the distance between the pores does not exceed 200 cm at the longest in the line direction, preferably 100 c
If it does not exceed m, the non-adhesive portion will not swell and the heat-shrinkable film and the non-heat-shrinkable film will not be peeled off during post-processing of rolling.
───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 3E086 AB01 AD16 BA04 BA13 BA15 BA24 BA43 BB67 CA40 4F100 AB01B AB10B AK01A AK01C AK41A AK41G AK42C AK51G BA03 BA04 BA07 BA10A BA10C BA26 BA32 CA13 CB01 DC11 EH66 EJ37C EJ38A GB15 GB18 JA03 JA03A JA03C JL10 JM02B JN24 YY00 YY00A YY00C 4F210 AA24 AE01 AG01 AG03 RA03 RC02 RG02 RG04 RG09 RG43 ─────────────────────────────────────────────────── ─── Continued front page F-term (reference) 3E086 AB01 AD16 BA04 BA13 BA15 BA24 BA43 BB67 CA40 4F100 AB01B AB10B AK01A AK01C AK41A AK41G AK42C AK51G BA03 BA04 BA07 BA10A BA10C BA26 BA32 CA13 CB01 DC11 EH66 EJ37C EJ38A GB15 GB18 JA03 JA03A JA03C JL10 JM02B JN24 YY00 YY00A YY00C 4F210 AA24 AE01 AG01 AG03 RA03 RC02 RG02 RG04 RG09 RG43
Claims (2)
ィルムと、熱収縮性を有していないか又は熱収縮性フィ
ルムより小さな熱収縮性を有していて、表面に金属薄膜
層を形成してなる厚さ６〜２５μｍの二軸延伸非熱収縮
性フィルムとを、複数列のライン状の接着部により一体
化してライン状の接着部と非接着部とを交互に配列した
熱収縮性包装用フィルムであって、下記のイ〜ハの条件
を全て満足することを特徴とする熱収縮性包装用フィル
ム。 イ．接着部の幅が０．６〜４ｍｍである。 ロ．接着部と非接着部の幅の比率が１：３〜３：２であ
る。 ハ．接着部と非接着部の繰り返し単位が２〜１６ｍｍで
ある。1. A uniaxially stretched heat-shrinkable film having a thickness of 25 to 75 μm, and a heat-shrinkable film which has no heat-shrinkable property or has a heat-shrinkable property smaller than that of the heat-shrinkable film, and has a metal thin film layer on the surface. Heat shrinkage in which a formed biaxially stretched non-heat-shrinkable film having a thickness of 6 to 25 μm is integrated by a plurality of rows of line-shaped adhesive parts and line-shaped adhesive parts and non-adhesive parts are alternately arranged. A heat-shrinkable packaging film, characterized by satisfying all the following conditions (a) to (c). I. The width of the bonded portion is 0.6 to 4 mm. B. The width ratio of the bonded portion and the non-bonded portion is 1: 3 to 3: 2. C. The repeating unit of the bonded portion and the non-bonded portion is 2 to 16 mm.
収縮性包装用フィルム。2. The heat-shrinkable packaging film according to claim 1, wherein pores are provided in the non-adhesive portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003129827A JP3877315B2 (en) | 2003-05-08 | 2003-05-08 | Heat shrinkable packaging film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003129827A JP3877315B2 (en) | 2003-05-08 | 2003-05-08 | Heat shrinkable packaging film |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2003246003A true JP2003246003A (en) | 2003-09-02 |
| JP3877315B2 JP3877315B2 (en) | 2007-02-07 |
Family
ID=28673000
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2003129827A Expired - Lifetime JP3877315B2 (en) | 2003-05-08 | 2003-05-08 | Heat shrinkable packaging film |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3877315B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015044303A (en) * | 2013-08-27 | 2015-03-12 | 凸版印刷株式会社 | Laminate and packaging material and packaging bag using the same |
| JP2016088565A (en) * | 2014-11-04 | 2016-05-23 | 東洋紡株式会社 | Package and method for manufacturing the same |
-
2003
- 2003-05-08 JP JP2003129827A patent/JP3877315B2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015044303A (en) * | 2013-08-27 | 2015-03-12 | 凸版印刷株式会社 | Laminate and packaging material and packaging bag using the same |
| JP2016088565A (en) * | 2014-11-04 | 2016-05-23 | 東洋紡株式会社 | Package and method for manufacturing the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3877315B2 (en) | 2007-02-07 |
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