JP2001019023A - Lid material - Google Patents
Lid materialInfo
- Publication number
- JP2001019023A JP2001019023A JP11190525A JP19052599A JP2001019023A JP 2001019023 A JP2001019023 A JP 2001019023A JP 11190525 A JP11190525 A JP 11190525A JP 19052599 A JP19052599 A JP 19052599A JP 2001019023 A JP2001019023 A JP 2001019023A
- Authority
- JP
- Japan
- Prior art keywords
- resin
- layer
- film
- heat seal
- lid material
- 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
Links
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、食品等に使用され
るポリプロピレン（ＰＰ）樹脂製容器の開口部にヒート
シールされる蓋材に関し、特には易開封性を有する蓋材
に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lid material which is heat-sealed at an opening of a polypropylene (PP) resin container used for foods and the like, and more particularly to a lid material having easy opening properties.
【０００２】[0002]
【従来の技術】従来、ＰＰ樹脂製容器用の蓋材のシーラ
ントとしては、易剥離性のフィルムを用いるか、線状低
密度ポリエチレン（ＬＬＤＰＥ）系樹脂での押し出しラ
ミネートによる仕様であった。2. Description of the Related Art Conventionally, as a sealant for a lid material for a container made of a PP resin, an easily peelable film has been used or an extruded laminate made of a linear low density polyethylene (LLDPE) resin has been used.
【０００３】[0003]
【発明が解決しようとする課題】易剥離性のフィルムを
用いた場合にはコストが高くなり、また、ＬＬＤＰＥ樹
脂での押し出しラミネートでは、シール安定域でのシー
ル強度が強すぎるため、易開封と呼ぶには不安定なもの
であった。[0005] When an easily peelable film is used, the cost is high, and in the case of extrusion lamination with LLDPE resin, the seal strength in the seal stable region is too strong. It was unstable to call.
【０００４】本発明は、ＰＰ樹脂製容器用の蓋材、特に
蓋材のシーラントに関する以上のような問題点に着目し
てなされたもので、安価で、作業性、取扱性に優れた易
開封性を有するＰＰ樹脂製容器用の蓋材を提供すること
を目的とする。The present invention has been made in view of the above-mentioned problems relating to a cover material for a PP resin container, particularly a sealant for the cover material, and is inexpensive, easy to open and excellent in workability and handling. It is an object of the present invention to provide a lid material for a PP resin container having a property.
【０００５】[0005]
【課題を解決するための手段】本発明の第１の発明は、
基材層とヒートシール層の積層体よりなり、前記ヒート
シール層は、低密度ポリエチレン（ＬＤＰＥ）樹脂とエ
チレン−αオレフィン共重合体樹脂とを混合した組成よ
りなり、押し出しラミネート法により基材層と積層した
ことを特徴とする蓋材である。Means for Solving the Problems A first invention of the present invention is:
The heat seal layer is composed of a mixture of a low-density polyethylene (LDPE) resin and an ethylene-α-olefin copolymer resin, and is formed by extrusion lamination. And a lid material characterized by being laminated.
【０００６】また、第２の発明は、第１の発明におい
て、前記基材層とヒートシール層の間に接着層を設けた
ことを特徴とする蓋材である。According to a second aspect of the present invention, there is provided the lid material according to the first aspect, wherein an adhesive layer is provided between the base material layer and the heat seal layer.
【０００７】上記のように本発明の蓋材は、ヒートシー
ル層がＬＤＰＥ樹脂とエチレン−αオレフィン共重合体
樹脂とを混合した組成よりなり、押し出しラミネート法
により基材層と積層されているので、易開封性を有する
とともに比較的安価に製造することができる。As described above, in the lid material of the present invention, the heat seal layer is composed of a mixture of LDPE resin and ethylene-α-olefin copolymer resin, and is laminated with the base material layer by the extrusion lamination method. It can be easily opened and manufactured at relatively low cost.
【０００８】さらに基材層とヒートシール層の間に接着
層を設けると、基材層とヒートシール層が一層強固に接
着される。Further, when an adhesive layer is provided between the base material layer and the heat seal layer, the base material layer and the heat seal layer are more firmly bonded.
【０００９】[0009]
【発明の実施の形態】以下実施例により本発明を詳細に
説明する。本発明の蓋材は、例えば図１に示すように、
基材層１１とヒートシール層１２の積層体よりなる。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to embodiments. The lid material of the present invention, for example, as shown in FIG.
It is composed of a laminate of a base material layer 11 and a heat seal layer 12.
【００１０】基材層１１としては、ポリエステル（ＰＥ
Ｔ）フィルム、ナイロン（Ｎｙ）フィルム等のプラスチ
ックフィルムが好ましい。ＰＥＴフィルムに酸化アルミ
ニウム、酸化ケイ素、酸化マグネシウムの単独またはこ
れらの混合物からなる無機化合物蒸着薄膜を形成させた
バリアーフィルムも好ましく使用できる。また、基材層
１１は単層でも、上述したプラスチックフィルムやアル
ミニウム箔のような金属箔等を適宜に組み合わせ複合し
た多層構造であっても良い。さらに、基材層の上に必要
に応じて印刷層を設けても良い。As the base material layer 11, polyester (PE)
Plastic films such as T) film and nylon (Ny) film are preferred. A barrier film in which a PET film is formed with an inorganic compound vapor-deposited thin film composed of aluminum oxide, silicon oxide, or magnesium oxide alone or a mixture thereof can also be preferably used. Further, the base material layer 11 may have a single layer or a multi-layer structure in which the above-mentioned plastic films and metal foils such as aluminum foils are appropriately combined and combined. Further, a printing layer may be provided on the base material layer as needed.
【００１１】ヒートシール層１２は、熱封緘性を有する
とともに、ＰＰ樹脂製容器の開口部と蓋材をヒートシー
ルした後、開封する際はたやすく開封できることが必要
となる。これらの要求を満足するものとして、ＬＤＰＥ
樹脂にエチレン−αオレフィン樹脂を任意の割合でブレ
ンドした混合樹脂を押し出しラミネート法により基材層
に積層させ、ヒートシール層１２とすれば良いことを発
明者らは鋭意努力して見い出した。The heat seal layer 12 needs to have heat sealing properties and to be easily opened when heat-sealing the opening of the PP resin container and the lid material, and then opening. To satisfy these requirements, LDPE
The present inventors have made intensive efforts to find that a heat-sealing layer 12 may be formed by laminating a mixed resin obtained by blending an ethylene-α-olefin resin with a resin at an arbitrary ratio and laminating the mixed resin on a base material layer by an extrusion lamination method.
【００１２】基材層１１とヒートシール層１２を押し出
しラミネート法により積層する際、基材層に接着層１３
を設けて押し出しラミネートを行うと、基材層１１とヒ
ートシール層１２の接着がより強固なものとなる。When the base material layer 11 and the heat seal layer 12 are laminated by extrusion lamination, the adhesive layer 13
Is provided and the extrusion lamination is performed, the adhesion between the base material layer 11 and the heat seal layer 12 becomes stronger.
【００１３】こうして得られた蓋材を、充填機上でカレ
ールウのような内容物を充填したＰＰ樹脂製のカップ状
容器の開口部に被せ、カップシーラーで１５０°Ｃから
１９０°Ｃまでシール温度を変化させてヒートシールし
カップ状容器を密封した。The lid material thus obtained is put on the opening of a cup-shaped container made of PP resin filled with contents such as currant on a filling machine, and the sealing temperature is increased from 150 ° C. to 190 ° C. with a cup sealer. Was changed and heat-sealed to seal the cup-shaped container.
【００１４】密封したカップ状容器を一定期間保管後、
開封した。その結果はヒートシール強度が安定している
とともに、容易に開封できるものであった。After storing the sealed cup-shaped container for a certain period,
Opened. As a result, the heat seal strength was stable and the package could be easily opened.
【００１５】[0015]
【実施例】以下に本発明の実施例をさらに具体的に説明
する。 〈実施例１〉基材層１１として厚さ１２μｍのＰＥＴフ
ィルムに２５０Å程度の酸化アルミニウムを真空蒸着法
により形成させたアルミニウム蒸着ＰＥＴフィルム（Ｇ
Ｌフィルム）を準備した。EXAMPLES Examples of the present invention will be described below more specifically. <Example 1> An aluminum-deposited PET film (G) in which aluminum oxide of about 250 ° was formed on a 12-μm
L film) was prepared.
【００１６】別に、ＬＤＰＥ樹脂であるミラソン４０１
ＰＣ（三井化学株式会社製）とエチレン−αオレフィン
共重合体樹脂であるタフマーＡ４０８５（三井化学株式
会社製）を７：３の比率でブレンドした混合樹脂を準備
し、この混合樹脂を、樹脂温度約２６０°Ｃで押し出し
ラミネーション法により６０μｍのヒートシール層１２
を形成させながら、先に準備したＧＬフィルムの酸化ア
ルミニウム薄膜蒸着面と接着させ、実施例１の蓋材用フ
ィルムとした。その際、基材層１１とヒートシール層１
２の間に接着層（１３）としてポリエステル樹脂系の二
液反応型接着剤を３ｇ／ｍ2 使用した。Separately, Mirason 401 which is an LDPE resin
A mixed resin prepared by blending PC (manufactured by Mitsui Chemicals, Inc.) and Tuffmer A4085 (manufactured by Mitsui Chemicals, Inc.) at a ratio of 7: 3, which is an ethylene-α-olefin copolymer resin, is prepared. Extrusion at about 260 ° C. and heat-seal layer 12 of 60 μm by extrusion lamination method.
Was formed and adhered to the aluminum oxide thin film deposition surface of the previously prepared GL film to obtain a film for a lid material of Example 1. At this time, the base material layer 11 and the heat seal layer 1
Between the two, a polyester resin-based two-component reactive adhesive was used as an adhesive layer (13) at 3 g / m 2 .
【００１７】〈実施例２〉ミラソン４０１ＰＣとタフマ
ーＡ４０８５のブレンド比率を８：２とした以外は実施
例１と同様の仕様、方法により実施例２の蓋材用フィル
ムを作製した。Example 2 A film for a cover material of Example 2 was produced in the same manner as in Example 1 except that the blend ratio of Mirason 401PC and Tuffmer A4085 was 8: 2.
【００１８】〈実施例３〉ミラソン４０１ＰＣとタフマ
ーＡ４０８５のブレンド比率を９：１とした以外は実施
例１と同様の仕様、方法により実施例３の蓋材用フィル
ムを作製した。Example 3 A lid material film of Example 3 was produced according to the same specifications and method as in Example 1, except that the blend ratio of Mirason 401PC and Tuffmer A4085 was 9: 1.
【００１９】〈比較例１〉ヒートシール層としてミラソ
ン４０１ＰＣとタフマーＡ４０８５をブレンドした混合
樹脂の代わりにＬＬＤＰＥ樹脂であるウルトゼックスＣ
２４９１を用いた以外は、実施例１と同様の仕様、方法
により比較例１の蓋材用フィルムを作製した。<Comparative Example 1> Instead of a mixed resin obtained by blending Mirason 401PC and Tuffmer A4085 as a heat seal layer, Ultrazex C, which is an LLDPE resin, is used.
A film for a lid material of Comparative Example 1 was produced according to the same specifications and method as in Example 1 except that 2491 was used.
【００２０】〈比較例２〉ヒートシール層としてミラソ
ン４０１ＰＣとタフマーＡ４０８５をブレンドした混合
樹脂の代わりにＬＤＰＥ樹脂であるミラソン４０１ＰＣ
を用いた以外は、実施例１と同様の仕様、方法により比
較例２の蓋材用フィルムを作製した。Comparative Example 2 As a heat seal layer, instead of a mixed resin obtained by blending Mirason 401PC and Toughmer A4085, Mirason 401PC which is an LDPE resin is used.
A film for a cover material of Comparative Example 2 was produced by the same specifications and method as in Example 1 except for using.
【００２１】このようにして作製した実施例と比較例、
合計５種類の蓋材用フィルムの開封性を下記する方法に
よりチェックした。その結果を表１に示す。Examples and comparative examples produced in this manner,
The openability of the five types of lid material films was checked by the following method. Table 1 shows the results.
【００２２】開封性のチェック方法；カレールウを充填
したＰＰ樹脂製のカップ状容器の開口部に各蓋材フィル
ムを被せ、温度を１５０°Ｃから１９０°Ｃまで１０°
Ｃ毎に変化させて、圧力：２ｋｇ／ｃｍ2 、シール時
間：１秒の条件でカップシーラーでヒートシールし、密
封接着した。その後、一定期間保管した後、そのヒート
シール強度を測定するとともに、剥離度合い（易開封
性）を官能チェックする。Method of checking openability: Cover each lid film over the opening of a cup-shaped container made of PP resin filled with currant, and raise the temperature from 150 ° C. to 190 ° C. by 10 °.
C, and heat-sealed with a cup sealer under the conditions of pressure: 2 kg / cm 2 , sealing time: 1 second, and hermetically bonded. Then, after storing for a certain period of time, the heat seal strength is measured, and the degree of peeling (easy opening) is sensory checked.
【００２３】[0023]
【表１】 [Table 1]
【００２４】表１から、ＬＤＰＥ樹脂とエチレンーαオ
レフィン共重合体樹脂をブレンドした混合樹脂をヒート
シール層に用いると、ＬＤＰＥ樹脂／エチレンーαオレ
フィン共重合体樹脂＝７／３〜９／１の範囲では、１６
０°Ｃから１９０°Ｃまでの比較的広い温度範囲で安定
したヒートシール強度が得られ、かつ、適度な易開封性
を得られることが分かる（実施例１〜実施例３）。According to Table 1, when a mixed resin obtained by blending an LDPE resin and an ethylene-α-olefin copolymer resin is used for the heat seal layer, the ratio of LDPE resin / ethylene-α-olefin copolymer resin = 7/3 to 9/1. Then, 16
It can be seen that stable heat seal strength can be obtained in a relatively wide temperature range from 0 ° C. to 190 ° C., and that a suitable easy-opening property can be obtained (Examples 1 to 3).
【００２５】[0025]
【発明の効果】上記のように本発明によれば、ＬＤＰＥ
樹脂とエチレンーαオレフィン共重合体樹脂を任意の割
合でブレンドした混合樹脂をヒートシール層に用いるこ
とにより、ＰＰ樹脂製容器とのヒートシール強度が安定
し、蓋材としての機能と易開封性をあわせ持ち、かつ、
ヒートシール温度域も広く安定したヒートシール強度を
有するヒートシール層ができた。As described above, according to the present invention, LDPE
By using a mixed resin in which the resin and ethylene-α-olefin copolymer resin are blended in an arbitrary ratio for the heat seal layer, the heat seal strength with the PP resin container is stabilized, and the function as the lid material and easy opening Together, and
A heat seal layer having a stable heat seal strength was obtained over a wide heat seal temperature range.
【図１】本発明の蓋材の層構成の一例を断面で表した説
明図である。FIG. 1 is an explanatory diagram showing an example of a layer structure of a lid material of the present invention in a cross section.
１０‥‥蓋材 １１‥‥基材層 １２‥‥ヒートシール層 １３‥‥接着層 10 lid material 11 base layer 12 heat seal layer 13 adhesive layer
───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 3E067 AA04 AB01 BC07A EA06 EA13 EA32 EB27 FA01 FC01 GD07 GD08 3E084 AA26 AB10 BA01 BA06 BA08 BA09 FD13 GB08 4F100 AA19 AK06B AK41G AK42 AK62B AL05B AR00B AT00A BA02 CB02 EH23 EH66 GB18 JL01 JL02 JL05 JL12B JL14 ──────────────────────────────────────────────────の Continuing on the front page F term (reference) 3E067 AA04 AB01 BC07A EA06 EA13 EA32 EB27 FA01 FC01 GD07 GD08 3E084 AA26 AB10 BA01 BA06 BA08 BA09 FD13 GB08 4F100 AA19 AK06B AK41G AK42 AK62B02E02A02B02A05B02E00 JL12B JL14
Claims (2)
り、前記ヒートシール層は、低密度ポリエチレン樹脂と
エチレン−αオレフィン共重合体樹脂とを混合した組成
よりなり、押し出しラミネート法により基材層と積層し
たことを特徴とする蓋材。1. A heat seal layer comprising a laminate of a base material layer and a heat seal layer, wherein the heat seal layer has a composition obtained by mixing a low density polyethylene resin and an ethylene-α-olefin copolymer resin. A lid material characterized by being laminated with a material layer.
を設けたことを特徴とする請求項１記載の蓋材。2. The lid material according to claim 1, wherein an adhesive layer is provided between said base layer and said heat seal layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11190525A JP2001019023A (en) | 1999-07-05 | 1999-07-05 | Lid material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11190525A JP2001019023A (en) | 1999-07-05 | 1999-07-05 | Lid material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2001019023A true JP2001019023A (en) | 2001-01-23 |
Family
ID=16259551
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11190525A Pending JP2001019023A (en) | 1999-07-05 | 1999-07-05 | Lid material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2001019023A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003160167A (en) * | 2001-11-22 | 2003-06-03 | Showa Denko Packaging Co Ltd | Cover tape for carrier for electronic part |
| EP2585297A4 (en) * | 2010-06-22 | 2014-04-30 | Danapak Flexibles As | A sheet, a method of making and using a sheet as a lid for packages |
| JP2017154316A (en) * | 2016-02-29 | 2017-09-07 | 東ソー株式会社 | Lid material |
-
1999
- 1999-07-05 JP JP11190525A patent/JP2001019023A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003160167A (en) * | 2001-11-22 | 2003-06-03 | Showa Denko Packaging Co Ltd | Cover tape for carrier for electronic part |
| EP2585297A4 (en) * | 2010-06-22 | 2014-04-30 | Danapak Flexibles As | A sheet, a method of making and using a sheet as a lid for packages |
| EP3388236A1 (en) * | 2010-06-22 | 2018-10-17 | Danapak Flexibles A/S | A sheet, a method of making and using a sheet as a lid for packages |
| JP2017154316A (en) * | 2016-02-29 | 2017-09-07 | 東ソー株式会社 | Lid material |
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