JP2000109116A - Lid material - Google Patents
Lid materialInfo
- Publication number
- JP2000109116A JP2000109116A JP10283778A JP28377898A JP2000109116A JP 2000109116 A JP2000109116 A JP 2000109116A JP 10283778 A JP10283778 A JP 10283778A JP 28377898 A JP28377898 A JP 28377898A JP 2000109116 A JP2000109116 A JP 2000109116A
- Authority
- JP
- Japan
- Prior art keywords
- layer
- resin layer
- ethylene
- copolymer
- vinyl acetate
- 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
- Closures For Containers (AREA)
- Packages (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、内面にポリエチレ
ン層を有する紙容器用の蓋材に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lid for a paper container having a polyethylene layer on the inner surface.
【０００２】[0002]
【従来の技術】従来、カップラーメン等の容器の口部に
熱接着により取り付けて容器を密封するための蓋材とし
ては、紙／ポリエチレン／アルミニウム箔／ポリエチレ
ン／熱接着性樹脂層の積層構成からなり、熱接着性樹脂
層は熱溶融押出しにより積層された構成のものが一般的
に使用されている。しかしながら、この構成の蓋材を使
用して表面にポリエチレン層を有する紙容器の口部に熱
接着した場合には、良好な熱接着強度が得られるのであ
るが、蓋材を紙容器から剥離する際に接着強度が強すぎ
て紙容器の口部の蓋材が熱接着された部分のポリエチレ
ンが破れて剥離してくるという欠点があった。上記の欠
点を改良した蓋材として、特開平８−２１７１４７号公
報に記載されているような、シール面から順にホットメ
ルト層と介在樹脂層とアルミニウム箔が積層された積層
材料からなり、介在樹脂層が不飽和カルボン酸またはそ
の誘導体を含むポリオレフィンであり、ホットメルト層
はエチレン−酢酸ビニル共重合体を主成分としてワック
ス、低分子量ポリエチレン等を添加した組成である構成
の蓋材が知られている。しかしながら、この構成におい
ては、ホットメルト層を積層する工程での高速化が困難
であるとともに塗布量を２５ｇ／ｍ2 程度と多くする必
要があるので、低価格化が困難であるという欠点があっ
た。2. Description of the Related Art Conventionally, as a lid material for sealing a container by attaching it to a mouth portion of a container such as a cup ramen by heat bonding, a laminated structure of paper / polyethylene / aluminum foil / polyethylene / heat-adhesive resin layer is used. In general, a heat-adhesive resin layer having a configuration laminated by hot-melt extrusion is generally used. However, when the lid material having this configuration is thermally bonded to the mouth of a paper container having a polyethylene layer on the surface, good thermal adhesive strength is obtained, but the lid material is peeled from the paper container. In this case, the adhesive strength is too strong, and there is a disadvantage that the polyethylene in the portion where the lid material at the mouth of the paper container is thermally bonded is torn and peeled off. As a cover material having the above-mentioned disadvantages improved, a laminated material in which a hot melt layer, an interposed resin layer and an aluminum foil are laminated in order from the sealing surface, as described in JP-A-8-217147, is used. Known is a cover material in which the layer is a polyolefin containing an unsaturated carboxylic acid or a derivative thereof, and the hot-melt layer has a composition in which an ethylene-vinyl acetate copolymer is used as a main component and wax, low molecular weight polyethylene or the like is added. I have. However, in this configuration, it is difficult to increase the speed in the step of laminating the hot melt layer, and it is necessary to increase the coating amount to about 25 g / m 2 , so that it is difficult to reduce the cost. Was.
【０００３】[0003]
【発明が解決しようとする課題】本発明の目的は、内面
にポリエチレン層が積層された構成の紙容器の蓋材とし
た場合に、十分な接着強度および密封性が得られ且つ蓋
材を剥離する際にポリエチレン層が破れて剥離してくる
ことのない蓋材を提供することである。SUMMARY OF THE INVENTION An object of the present invention is to provide a cover material for a paper container having a structure in which a polyethylene layer is laminated on the inner surface, whereby sufficient adhesive strength and sealing properties can be obtained and the cover material is peeled off. It is an object of the present invention to provide a cover material in which the polyethylene layer is not broken and peeled off when performing.
【０００４】[0004]
【課題を解決するための手段】外面から順に基材層と接
着層とアルミニウム箔層と熱可塑性樹脂層と熱接着性樹
脂層との積層体からなり、熱可塑性樹脂層がエチレンと
アクリル酸誘導体との共重合体からなり、熱接着性樹脂
層が酢酸ビニル含有率が２０〜３０％のエチレン−酢酸
ビニル共重合体の水性エマルジョン、メタクリル酸含有
率が５〜１５％のエチレン−メタクリル酸共重合体の水
性エマルジョンの単体ないしは混合物を使用して３〜１
０μの厚さに形成した構成の蓋材とすることにより、内
面にポリエチレン層を有し開口部に縁巻部を有する紙容
器の口部に熱接着した際の接着強度は８００〜１４００
ｇ／１５ｍｍ巾となり十分な接着強度が得られるととも
に、蓋材を紙容器から剥離する際に熱接着部のポリエチ
レン層が破れて剥離してくることがない。また、熱接着
性樹脂層をグラビア印刷ないしはコーテイングにより形
成することができるので製造工程が簡略化できととも
に、熱接着性樹脂層の表面のスリップ性が良くなるの
で、蓋材を製造する際の断裁、打抜き工程をスムーズに
行うことができ且つ蓋材を紙容器の口部に熱接着する際
の作業性が優れたものとなる。Means for Solving the Problems A laminate of a base material layer, an adhesive layer, an aluminum foil layer, a thermoplastic resin layer, and a thermoadhesive resin layer in order from the outer surface, wherein the thermoplastic resin layer is composed of ethylene and an acrylic acid derivative Wherein the heat-adhesive resin layer is an aqueous emulsion of an ethylene-vinyl acetate copolymer having a vinyl acetate content of 20 to 30%, and an ethylene-methacrylic acid copolymer having a methacrylic acid content of 5 to 15%. 3 to 1 using a simple substance or a mixture of an aqueous emulsion of a polymer.
By forming the cover material having a thickness of 0 μm, the adhesive strength at the time of heat bonding to the mouth of a paper container having a polyethylene layer on the inner surface and a rim at the opening is 800 to 1400.
g / 15 mm width and sufficient adhesive strength can be obtained, and the polyethylene layer of the heat-bonded portion is not broken and peeled off when the lid is peeled from the paper container. In addition, since the heat-adhesive resin layer can be formed by gravure printing or coating, the manufacturing process can be simplified, and the slip property of the surface of the heat-adhesive resin layer is improved, so that cutting when manufacturing the lid material is performed. In addition, the punching process can be performed smoothly, and the workability when the lid material is thermally bonded to the mouth of the paper container becomes excellent.
【０００５】[0005]
【発明の実施の形態】以下、図面を引用して本発明の実
施の形態を説明する。図１は本発明の蓋材の実施形態の
積層構成を示す断面図であり、１は基材層、２は接着
層、３はアルミニウム箔層、４は熱可塑性樹脂層、５は
熱接着性樹脂層をそれぞれ表す。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a cross-sectional view showing a laminated structure of an embodiment of a lid material of the present invention, wherein 1 is a base material layer, 2 is an adhesive layer, 3 is an aluminum foil layer, 4 is a thermoplastic resin layer, and 5 is a thermoadhesive. Each represents a resin layer.
【０００６】本発明の蓋材の実施形態の積層構成は、図
１に示すように、外面から順に基材層１と接着層２とア
ルミニウム箔層３と熱可塑性樹脂層４と熱接着性樹脂層
５が積層された積層体であって、熱可塑性樹脂層４がエ
チレンとアクリル酸またはアクリル酸誘導体との共重合
体にて形成され、熱接着性樹脂層５が酢酸ビニル含有率
が２０〜３０％のエチレン−酢酸ビニル共重合体の水性
エマルジョン、メタクリル酸含有率が５〜１５％のエチ
レン−メタクリル酸共重合体の水性エマルジョンの単体
ないしは混合物から形成された構成からなる。基材層１
としては紙、合成紙、プラスチックフイルム、紙とプラ
スチックフイルムの積層体等が使用される。紙、合成紙
を使用する場合には印刷絵柄はその外面に、またプラス
チックフイルムを使用する場合には印刷絵柄はその内面
に設けられる。接着層２としてはポリエチレン等のポリ
オレフィンが使用される。As shown in FIG. 1, the laminated structure of the embodiment of the lid material of the present invention is such that a base layer 1, an adhesive layer 2, an aluminum foil layer 3, a thermoplastic resin layer 4, and a thermo-adhesive resin are arranged in this order from the outer surface. A thermoplastic resin layer 4 formed of a copolymer of ethylene and acrylic acid or an acrylic acid derivative, wherein the thermal adhesive resin layer 5 has a vinyl acetate content of 20 to The aqueous emulsion of a 30% ethylene-vinyl acetate copolymer and the aqueous emulsion of an ethylene-methacrylic acid copolymer having a methacrylic acid content of 5 to 15% are formed from a simple substance or a mixture. Base material layer 1
Examples thereof include paper, synthetic paper, plastic film, and a laminate of paper and plastic film. When using paper or synthetic paper, the print pattern is provided on its outer surface, and when using plastic film, the print pattern is provided on its inner surface. As the adhesive layer 2, a polyolefin such as polyethylene is used.
【０００７】熱可塑性樹脂層４を構成するエチレンとア
クリル酸またはアクリル酸誘導体との共重合体からなる
樹脂としては、アイオノマー、エチレン−アクリル酸共
重合体（ＥＡＡ）、エチレン−メタクリル酸共重合体
（ＥＭＡＡ）、エチレン−アクリル酸メチル共重合体
（ＥＭＡ）、エチレン−アクリル酸エチル共重合体（Ｅ
ＥＡ）、エチレン−メタクリル酸メチル共重合体（ＥＭ
ＭＡ）等である。熱可塑性樹脂層４はアルミニウム箔面
に上記の樹脂を熱溶融押出しすることにより積層される
ものである。Examples of the resin comprising the copolymer of ethylene and acrylic acid or an acrylic acid derivative which constitute the thermoplastic resin layer 4 include ionomer, ethylene-acrylic acid copolymer (EAA), and ethylene-methacrylic acid copolymer. (EMAA), ethylene-methyl acrylate copolymer (EMA), ethylene-ethyl acrylate copolymer (E
EA), ethylene-methyl methacrylate copolymer (EM
MA). The thermoplastic resin layer 4 is laminated on the aluminum foil surface by hot-melt extrusion of the above resin.
【０００８】熱可塑性樹脂層４面に熱接着性樹脂層５を
形成するには、酢酸ビニル含有率が２０〜３０％のエチ
レン−酢酸ビニル共重合体のエマルジョン、メタクリル
酸含有率が５〜１５％のエチレン−メタクリル酸共重合
体のエマルジョンの単体ないしは所定の割合で混合した
混合物を、グラビア版を使用して印刷により塗布する方
法、ないしはコーテイングにより塗布する方法により行
うことができる。基材層１が紙からなり且つ熱接着性樹
脂層５をグラビア印刷により形成する場合には、基材層
１と接着層２とアルミニウム箔層３と熱可塑性樹脂層４
からなる積層体を作製した後に、基材層１となる紙面に
絵柄を印刷する工程にてインラインで熱可塑性樹脂層４
面に熱接着性樹脂層５を形成することができるので、工
程を削減することが可能となりきわめて効率的に蓋材を
製造することができる。またエチレン−酢酸ビニル共重
合体のエマルジョン、エチレン−メタクリル酸共重合体
のエマルジョンにアルコールを適量添加することによ
り、塗膜の乾燥性が良くなるので塗布作業効率を良くす
ることができる。In order to form the heat-adhesive resin layer 5 on the surface of the thermoplastic resin layer 4, an emulsion of an ethylene-vinyl acetate copolymer having a vinyl acetate content of 20 to 30% and a methacrylic acid content of 5 to 15 % Of an ethylene-methacrylic acid copolymer emulsion or a mixture obtained by mixing the emulsions in a predetermined ratio by a printing method using a gravure plate, or by a coating method. When the base material layer 1 is made of paper and the thermo-adhesive resin layer 5 is formed by gravure printing, the base material layer 1, the adhesive layer 2, the aluminum foil layer 3, and the thermoplastic resin layer 4
After forming a laminate made of the thermoplastic resin layer 4 in-line in a process of printing a pattern on the paper surface serving as the base material layer 1
Since the heat-adhesive resin layer 5 can be formed on the surface, the number of steps can be reduced, and the lid material can be manufactured very efficiently. Also, by adding an appropriate amount of alcohol to the emulsion of the ethylene-vinyl acetate copolymer and the emulsion of the ethylene-methacrylic acid copolymer, the drying property of the coating film is improved, so that the coating operation efficiency can be improved.
【０００９】本発明の蓋材の場合、熱可塑性樹脂層４面
に形成される熱接着性樹脂層４の厚さが３〜１０μであ
り、従来から使用されている押出ラミネーションにより
積層される変性ポリオレフィン系樹脂からなる熱接着性
樹脂層ないしはホットメルトからなる熱接着性樹脂層と
比較して厚さを薄くできるので低価格化が可能となる。
また、熱接着性樹脂層５を水性エマルジョンにより形成
した場合には表面の滑り性が良くなるので、熱接着性樹
脂層が熱溶融押出しにより形成される場合のようにダス
ティングを行う必要がなく粉による問題がなくなるとと
もに、蓋材を製造する際の断裁、打抜き加工適性および
紙容器に蓋材を熱接着する際の作業性が優れたものとな
る。In the case of the lid material of the present invention, the thickness of the thermo-adhesive resin layer 4 formed on the surface of the thermoplastic resin layer 4 is 3 to 10 μm, and the denatured layer is laminated by extrusion lamination conventionally used. Since the thickness can be reduced as compared with the thermo-adhesive resin layer made of a polyolefin-based resin or the thermo-adhesive resin layer made of a hot melt, the cost can be reduced.
Further, when the heat-adhesive resin layer 5 is formed from an aqueous emulsion, the surface has good slipperiness, so that dusting is not required as in the case where the heat-adhesive resin layer is formed by hot-melt extrusion. The problem due to the powder is eliminated, and the suitability for cutting and punching when manufacturing the lid material and the workability when thermally bonding the lid material to the paper container are improved.
【００１０】熱接着性樹脂層として酢酸ビニル含有率が
２０〜３０％のエチレン−酢酸ビニル共重合体エマルジ
ョンを使用した場合の内面にポリエチレン層を有する紙
容器との熱接着強度は８００〜１０００ｇ／１５ｍｍ巾
であり、メタクリル酸含有率が５〜１５％のエチレン−
メタクリル酸共重合体エマルジョンを使用した場合の紙
容器との熱接着強度は１２００〜１４００ｇ／１５ｍｍ
巾となる。酢酸ビニル含有率が２０〜３０％のエチレン
−酢酸ビニル共重合体エマルジョンとメタクリル酸含有
率が５〜１５％のエチレン−メタクリル酸共重合体エマ
ルジョンの混合比率を変えることにより接着強度を８０
０〜１４００ｇ／１５ｍｍ巾の範囲で調節することが可
能である。When an ethylene-vinyl acetate copolymer emulsion having a vinyl acetate content of 20 to 30% is used as the heat-adhesive resin layer, the heat-adhesive strength to a paper container having a polyethylene layer on the inner surface is 800 to 1000 g /. Ethylene having a width of 15 mm and a methacrylic acid content of 5 to 15%
When a methacrylic acid copolymer emulsion is used, the thermal adhesive strength to a paper container is 1200 to 1400 g / 15 mm.
It becomes width. By changing the mixing ratio of the ethylene-vinyl acetate copolymer emulsion having a vinyl acetate content of 20 to 30% and the ethylene-methacrylic acid copolymer emulsion having a methacrylic acid content of 5 to 15%, the adhesive strength is increased by 80.
It can be adjusted in the range of 0 to 1400 g / 15 mm width.
【００１１】本発明の蓋材の場合、内面にポリエチレン
層を有する構成の紙容器に熱接着して取り付けるに際
し、熱接着温度を上げていった場合でも、或る一定の熱
接着強度に達した後は熱接着温度を更に上げてもそれ以
後は接着強度が殆ど変化しない性質を有するので、熱接
着温度範囲の広い熱接着適性の優れた蓋材とすることが
できる。内面にポリエチレン層を有する構成の紙容器の
蓋材として使用した際に熱接着温度に多少のバラツキが
生じても、一定の熱接着強度に保つことができるととも
に、内面のポリエチレン層が破れて剥離してくるのを防
止することができる。[0011] In the case of the lid material of the present invention, when it is heat-bonded to a paper container having a polyethylene layer on the inner surface, even when the heat bonding temperature is raised, a certain heat bonding strength is reached. Thereafter, even if the heat bonding temperature is further increased, the adhesive strength is hardly changed thereafter, so that a lid material having a wide heat bonding temperature range and excellent heat bonding suitability can be obtained. When used as a lid for a paper container with a polyethylene layer on the inner surface, even if there is some variation in the thermal bonding temperature, it is possible to maintain a constant thermal adhesive strength, and the polyethylene layer on the inner surface is torn and peeled Can be prevented.
【００１２】[0012]
【実施例】実施例１ 坪量７９ｇ／ｍ2 の片アート紙と７μのアルミニウム箔
とを１５μのポリエチレンの押出ラミネーションにより
積層すると同時にアルミニウム箔面にエチレン−メタク
リル酸共重合体を２０μの厚さで押出しコーテイングに
より積層し、積層した片アート紙面にグラビア印刷によ
り絵柄を印刷する印刷工程にてインラインでエチレン−
メタクリル酸共重合体層面にメタクリル酸含有率が９％
のエチレン−メタクリル酸共重合体水性エマルジョン
（中央理化工業、アクアテックスＡＣ−３１００）を深
さ５０μのグラビア印刷用ベタ版を使用して２回刷りを
行い５μの厚さの熱接着性樹脂層を形成して蓋材用の積
層体を作製した。得られた積層体を所定の形状に打抜い
て蓋材を作製し、内面にポリエチレンが積層された紙容
器の口部に、熱接着して熱接着強度を測定した結果は表
１に示すとおりである。熱接着した蓋材を剥離した際に
紙容器内面のポリエチレン層が破れて剥離してくること
はなかった。熱接着条件は温度１３０℃、圧力２ｋｇ／
ｃｍ2 、加圧時間０．５秒である。EXAMPLE 1 A piece of art paper having a basis weight of 79 g / m 2 and an aluminum foil of 7 μm were laminated by extrusion lamination of 15 μm polyethylene, and at the same time, a 20 μm thick ethylene-methacrylic acid copolymer was coated on the aluminum foil surface. Laminated by extrusion coating, and inline in the printing process to print a pattern by gravure printing on the laminated piece of art paper
9% methacrylic acid content on the methacrylic acid copolymer layer surface
Of a water-based emulsion of ethylene-methacrylic acid copolymer (Aquatex AC-3100, Chuo Rika Kogyo Co., Ltd.) twice using a solid plate for gravure printing with a depth of 50 μm, and a heat-adhesive resin layer of 5 μm thickness Was formed to produce a laminate for a lid material. The obtained laminate was punched into a predetermined shape to produce a lid material, and was thermally bonded to the mouth of a paper container having polyethylene laminated on the inner surface, and the thermal adhesive strength was measured. The results are shown in Table 1. It is. The polyethylene layer on the inner surface of the paper container was not broken and peeled off when the thermally bonded lid material was peeled off. Thermal bonding conditions are 130 ° C and 2kg / pressure.
cm 2 , and the pressurization time is 0.5 seconds.
【００１３】実施例２ 熱接着性樹脂層として、酢酸ビニル含有率が２５％のエ
チレン−酢酸ビニル共重合体エマルジョン（中央理化工
業、アクアテックスＥＣ−１７００）を使用して５μの
厚さに形成した以外は、実施例１と同様にして蓋材を作
製した。内面にポリエチレンが積層された紙容器の口部
に、熱接着して熱接着強度を測定した結果は表１に示す
とおりである。熱接着した蓋材を剥離した際に紙容器内
面のポリエチレン層が破れて剥離してくることはなかっ
た。Example 2 As a heat-adhesive resin layer, an ethylene-vinyl acetate copolymer emulsion having a vinyl acetate content of 25% (Chuo Rika Kogyo, Aquatex EC-1700) was formed to a thickness of 5 μm. A lid material was produced in the same manner as in Example 1 except for the above. Table 1 shows the results of measuring the thermal adhesive strength by heat bonding to the mouth of a paper container having polyethylene laminated on the inner surface. The polyethylene layer on the inner surface of the paper container was not broken and peeled off when the thermally bonded lid material was peeled off.
【００１４】 熱接着条件は上記の温度で、圧力２ｋｇ／ｃｍ2 、加圧
時間０．５秒で加圧して熱接着し測定した熱接着性強度
（ｇ／１５ｍｍ巾）を表す。[0014] The thermal bonding conditions represent the thermal adhesive strength (g / 15 mm width) measured by applying pressure at a pressure of 2 kg / cm 2 and a pressure time of 0.5 seconds at the above temperature and performing thermal bonding.
【００１５】[0015]
【発明の効果】外面から順に基材層と接着層とアルミニ
ウム箔層と熱可塑性樹脂層と熱接着性樹脂層との積層体
からなり、熱可塑性樹脂層がエチレンとアクリル酸誘導
体との共重合体からなり、熱接着性樹脂層が酢酸ビニル
含有率が２０〜３０％のエチレン−酢酸ビニル共重合体
の水性エマルジョン、メタクリル酸含有率が５〜１５％
のエチレン−メタクリル酸共重合体の水性エマルジョン
の単体ないしは混合物を使用して３〜１０μの厚さに形
成した構成の蓋材とすることにより、内面にポリエチレ
ン層を有し開口部に縁巻部を有する紙容器の口部に熱接
着した際の接着強度は８００〜１４００ｇ／１５ｍｍ巾
となり十分な接着強度が得られるとともに、蓋材を紙容
器から剥離する際に熱接着部のポリエチレン層が破れて
剥離してくることがない。また、熱接着性樹脂層にグラ
ビア印刷ないしはコーテイングにより形成することがで
きるので製造工程が簡略化できとともに、熱接着性樹脂
層の表面のスリップ性が良くなるので、蓋材を製造する
際の断裁、打抜き工程がスムーズに行うことができ且つ
蓋材を紙容器の口部に熱接着する際の作業性が優れたも
のとなる。According to the present invention, a laminate of a substrate layer, an adhesive layer, an aluminum foil layer, a thermoplastic resin layer, and a thermoadhesive resin layer is formed in order from the outer surface, and the thermoplastic resin layer is formed of a copolymer of ethylene and an acrylic acid derivative. An aqueous emulsion of an ethylene-vinyl acetate copolymer having a vinyl acetate content of 20 to 30% and a methacrylic acid content of 5 to 15%
By using a single or mixture of an aqueous emulsion of an ethylene-methacrylic acid copolymer and having a thickness of 3 to 10 .mu.m, a lid material having a polyethylene layer on the inner surface and a rim around the opening is provided. The adhesive strength when thermally bonded to the mouth of a paper container having a thickness of 800 to 1400 g / 15 mm is sufficient to obtain sufficient adhesive strength, and the polyethylene layer of the thermally bonded portion is broken when the lid material is peeled from the paper container. It does not come off. In addition, since the heat adhesive resin layer can be formed by gravure printing or coating, the manufacturing process can be simplified, and the slip property of the surface of the heat adhesive resin layer is improved, so that cutting when manufacturing the lid material is performed. In addition, the punching process can be performed smoothly, and the workability when the lid material is thermally bonded to the mouth of the paper container is excellent.
【図１】本発明の蓋材の実施形態の積層構成を示す断面
図。FIG. 1 is a cross-sectional view showing a laminated structure of an embodiment of a lid member of the present invention.
１ 基材層 ２ 接着層 ３ アルミニウム箔層 ４ 熱可塑性樹脂層 ５ 熱接着性樹脂層 DESCRIPTION OF SYMBOLS 1 Base material layer 2 Adhesive layer 3 Aluminum foil layer 4 Thermoplastic resin layer 5 Thermal adhesive resin layer
Claims (3)
ウム箔層と熱可塑性樹脂層と熱接着性樹脂層とが積層さ
れた積層体であって、前記熱可塑性樹脂層がエチレンと
アクリル酸またはアクリル酸誘導体との共重合体からな
り、前記熱接着性樹脂層が酢酸ビニル含有率が２０〜３
０％のエチレン−酢酸ビニル共重合体の水性エマルジョ
ン、メタクリル酸含有率が５〜１５％のエチレン−メタ
クリル酸共重合体の水性エマルジョンの単体ないしは混
合物にて形成された構成からなることを特徴とする蓋
材。1. A laminate in which a base material layer, an adhesive layer, an aluminum foil layer, a thermoplastic resin layer, and a thermoadhesive resin layer are laminated in order from the outer surface, wherein the thermoplastic resin layer is ethylene and acrylic acid. Alternatively, the thermoadhesive resin layer comprises a copolymer with an acrylic acid derivative, and has a vinyl acetate content of 20 to 3;
The aqueous emulsion of a 0% ethylene-vinyl acetate copolymer and the aqueous emulsion of an ethylene-methacrylic acid copolymer having a methacrylic acid content of 5 to 15% are constituted by a simple substance or a mixture. Cover material.
であることを特徴とする請求項１記載の蓋材。2. The heat-adhesive resin layer has a thickness of 3 to 10 μm.
The lid material according to claim 1, wherein:
クフイルム、紙とプラスチックフイルムの積層体からな
ることを特徴とする請求項１または２に記載の蓋材。3. The lid material according to claim 1, wherein the base material layer is made of paper, synthetic paper, plastic film, or a laminate of paper and plastic film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28377898A JP4390874B2 (en) | 1998-10-06 | 1998-10-06 | Lid material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28377898A JP4390874B2 (en) | 1998-10-06 | 1998-10-06 | Lid material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000109116A true JP2000109116A (en) | 2000-04-18 |
| JP4390874B2 JP4390874B2 (en) | 2009-12-24 |
Family
ID=17670014
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28377898A Expired - Fee Related JP4390874B2 (en) | 1998-10-06 | 1998-10-06 | Lid material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4390874B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006290398A (en) * | 2005-04-11 | 2006-10-26 | Toppan Printing Co Ltd | Inner sealant |
| JP2012051638A (en) * | 2010-09-03 | 2012-03-15 | Toppan Printing Co Ltd | Lid |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4580484B2 (en) * | 1999-05-19 | 2010-11-10 | 大日本印刷株式会社 | Lid material |
-
1998
- 1998-10-06 JP JP28377898A patent/JP4390874B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006290398A (en) * | 2005-04-11 | 2006-10-26 | Toppan Printing Co Ltd | Inner sealant |
| JP2012051638A (en) * | 2010-09-03 | 2012-03-15 | Toppan Printing Co Ltd | Lid |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4390874B2 (en) | 2009-12-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101220246B (en) | Heat-activated adhesive sheet | |
| JP2000255621A (en) | Lid material | |
| JP2000109116A (en) | Lid material | |
| JP3843694B2 (en) | LAMINATE, COVER MATERIAL, SOFT PACKAGING MATERIAL AND COMPOSITE PAPER CONTAINER USING SAME | |
| JP4043561B2 (en) | Lid and lid manufacturing method | |
| JP2012210964A (en) | Lid material | |
| JP5970792B2 (en) | Paper container | |
| JP6566710B2 (en) | Lid with hot spot | |
| JP5870628B2 (en) | Laminate | |
| JP2007276404A (en) | Laminate | |
| JP5870630B2 (en) | Laminate | |
| JP2000229663A (en) | Lid material | |
| JP2005187013A (en) | Lid material | |
| JP3990032B2 (en) | Delaminated heat-sensitive adhesive sheet | |
| JPH0655702A (en) | Liquid receptacle base material having regenerative usage ability | |
| JP4021988B2 (en) | Delaminated heat-sensitive adhesive sheet | |
| JPH0516605Y2 (en) | ||
| JP3990031B2 (en) | Delaminated heat-sensitive adhesive sheet | |
| JP2006290398A (en) | Inner sealant | |
| JPH02501390A (en) | Sheet material coated with pressure sensitive adhesive | |
| JP2004331081A (en) | Lid with hot water draining function | |
| JPH0434003Y2 (en) | ||
| JP2003341708A (en) | Easily peelable cover material | |
| JP2532080Y2 (en) | Low odor packaging material | |
| JP2023144852A (en) | pseudo adhesive sheet |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20050930 |
|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20080905 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20080925 |
|
| A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20081125 |
|
| TRDD | Decision of grant or rejection written | ||
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20090915 |
|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20091007 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20121016 Year of fee payment: 3 |
|
| R150 | Certificate of patent or registration of utility model |
Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20131016 Year of fee payment: 4 |
|
| LAPS | Cancellation because of no payment of annual fees |