JP2001225855A - Cap seal with top cover - Google Patents

Cap seal with top cover

Info

Publication number
JP2001225855A
JP2001225855A JP2000036340A JP2000036340A JP2001225855A JP 2001225855 A JP2001225855 A JP 2001225855A JP 2000036340 A JP2000036340 A JP 2000036340A JP 2000036340 A JP2000036340 A JP 2000036340A JP 2001225855 A JP2001225855 A JP 2001225855A
Authority
JP
Japan
Prior art keywords
top plate
cap seal
polyester
film
tubular 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
Application number
JP2000036340A
Other languages
Japanese (ja)
Other versions
JP3592987B2 (en
Inventor
Kenji Otsuka
健治 大塚
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.)
Fuji Seal Inc
Original Assignee
Fuji Seal Inc
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 Fuji Seal Inc filed Critical Fuji Seal Inc
Priority to JP2000036340A priority Critical patent/JP3592987B2/en
Publication of JP2001225855A publication Critical patent/JP2001225855A/en
Application granted granted Critical
Publication of JP3592987B2 publication Critical patent/JP3592987B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

PROBLEM TO BE SOLVED: To provide a cap seal with a top cover, having no fear generating a toxic gas when it is incinerated, and moreover having a sufficient bond strength between the top cover and a cylindrical film. SOLUTION: The cap seal with the top cover, which is mounted to a mouth of a container, is provided with a heat-shrinkable cylindrical film and a top cover adhered to an inner circumferential face of an upper part of the cylindrical film. At least the adhesive surface of the inner circumferential face of the cylindrical film, to which the top cover is adhered, is formed of an amorphous polyester, and the top cover is thermally adhered to the above adhesive surface.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、熱収縮性の筒状フ
ィルムと、該筒状フィルムの上部に接着された天板とを
備え、例えば、ビア樽、牛乳瓶等の口部に装着される天
板付きキャップシールに関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention comprises a heat-shrinkable tubular film and a top plate adhered to the upper portion of the tubular film, and is mounted on a mouth of a vial barrel, a milk bottle or the like. To a cap seal with a top plate.

【0002】[0002]

【従来の技術】従来、例えば、ビア樽等のようなビール
等の飲料を充填した大型の容器の口部(被充填物の排出
口及びその近傍)には、封緘と口部の汚れを防止するた
めに、天板を備えた天板付きキャップシールが外嵌装着
されている。また、牛乳瓶等の口部にも、天板を備えた
天板付きキャップシールが多数使用されている。
2. Description of the Related Art Conventionally, for example, a mouth of a large container filled with a drink such as beer such as a beer barrel (a discharge outlet of a material to be filled and its vicinity) is sealed and a stain on the mouth is prevented. For this purpose, a cap seal with a top plate provided with a top plate is externally fitted. Also, many cap seals with a top plate having a top plate are used in the mouth of milk bottles and the like.

【0003】この種の天板付きキャップシールとして
は、ポリ塩化ビニル樹脂製の熱収縮性チューブ(筒状フ
ィルム)と、該熱収縮性チューブの上部に、表面がビニ
ールコート(塩化ビニル樹脂や塩化ビニル酢酸ビニル共
重合樹脂等の塩素含有樹脂のコーティング)された厚紙
からなる天板が、周縁部上面において熱接着されてなる
ものが使用されている。
A cap seal with a top plate of this type includes a heat-shrinkable tube (cylindrical film) made of polyvinyl chloride resin, and a vinyl coat (vinyl chloride resin or chloride) on the heat-shrinkable tube. A top plate made of cardboard coated with a chlorine-containing resin such as a vinyl-vinyl acetate copolymer resin) and thermally bonded on the upper surface of the peripheral portion is used.

【0004】[0004]

【発明が解決しようとする課題】しかしながら、塩化ビ
ニル等の塩素含有樹脂は、焼却時に有毒ガスを発生する
虞が有ることから、塩素含有樹脂の代替樹脂として、ポ
リエステルを使用することが望まれている。
However, since chlorine-containing resins such as vinyl chloride may generate toxic gases during incineration, it is desired to use polyester as an alternative resin to chlorine-containing resins. I have.

【0005】ところが、通常のポリエステルを天板付き
キャップシールに使用した場合には、筒状フィルムと天
板との接着性が悪く(接着力が弱く)、天板付きキャッ
プシールとして、筒状フィルムと天板との十分な接着強
度を得ることが困難である。また、牛乳瓶等の口部を覆
う天板付きキャップシールとして、ポリエステルシート
製天板とポリエステル製の熱収縮性筒状フィルムとから
なるものも有るが、、かかる天板付きキャップシールで
あっても、筒状フィルムと天板との十分な接着強度を得
ることが困難であった。
However, when ordinary polyester is used for the cap seal with the top plate, the adhesion between the tubular film and the top plate is poor (the adhesive strength is weak), and the cap film with the top plate is used as the cap film. It is difficult to obtain sufficient adhesive strength between the sheet and the top plate. Further, as a cap seal with a top plate that covers the mouth of a milk bottle or the like, there is also a top seal made of a polyester sheet and a heat-shrinkable tubular film made of polyester. However, it was difficult to obtain sufficient adhesive strength between the cylindrical film and the top plate.

【0006】そこで、本発明は、上記従来の問題点に鑑
みなされたもので、焼却時に有毒ガスを発生する虞も少
なく、しかも、天板と筒状フィルムとの十分な接着強度
を備えた天板付きキャップシールを提供することを課題
とする。
In view of the above, the present invention has been made in view of the above-mentioned conventional problems, and there is little possibility that toxic gas is generated during incineration, and a ceiling plate having a sufficient adhesive strength between a top plate and a cylindrical film is provided. It is an object to provide a cap seal with a plate.

【0007】[0007]

【課題を解決するための手段】本発明者は、上記課題を
解決すべく鋭意検討した結果、ポリエステルの中でも非
晶性ポリエステルが良好な熱接着性を呈することを見出
し、本発明を完成するに至った。即ち、本発明にかかる
天板付きキャップシールは、熱収縮性の筒状フィルム
と、該筒状フィルムの上部の内周面に接着された天板と
を備え、容器の口部に装着される天板付きキャップシー
ルにおいて、前記筒状フィルムの内周面のうち、少なく
とも前記天板が接着される接着表面は、非晶性ポリエス
テルから形成され、該接着表面に前記天板が熱接着され
てなることを特徴とする。
Means for Solving the Problems As a result of intensive studies to solve the above problems, the present inventors have found that amorphous polyesters among polyesters exhibit good thermal adhesiveness and have completed the present invention. Reached. That is, the cap seal with a top plate according to the present invention includes a heat-shrinkable tubular film and a top plate adhered to the inner peripheral surface of the upper portion of the tubular film, and is attached to the mouth of the container. In the cap seal with a top plate, at least an adhesion surface to which the top plate is adhered among the inner peripheral surfaces of the tubular film is formed of amorphous polyester, and the top plate is thermally adhered to the adhesion surface. It is characterized by becoming.

【0008】上記構成からなる天板付きキャップシール
においては、非晶性ポリエステルから形成された筒状フ
ィルムの接着表面に天板が熱接着されてなるので、筒状
フィルムと天板とが強固に接着されていると共に、接着
表面がポリ塩化ビニルで形成されたものに比べて、含有
塩素が少なく(又は無く)、焼却時に有毒ガスを発生す
る虞も減少する。ここで、非晶性ポリエステルとは、結
晶融解熱が0〜15J/gのもの、好ましくは、0〜1
2.5J/gのものである。
[0008] In the cap seal with the top plate having the above structure, the top plate is thermally bonded to the bonding surface of the cylindrical film formed of amorphous polyester, so that the cylindrical film and the top plate are firmly bonded. It is adhered and contains (or does not contain) chlorine as compared with the case where the adhered surface is made of polyvinyl chloride, and the risk of generating toxic gas during incineration is reduced. Here, the amorphous polyester means one having a crystal melting heat of 0 to 15 J / g, preferably 0 to 1 J / g.
It is 2.5 J / g.

【0009】また、本発明において、前記天板は、少な
くとも前記筒状フィルムに接着される接着表面がポリエ
ステルで形成された、紙基材よりなるものが好ましい。
ポリエステル同士は互いに良好な熱接着性を呈すること
から、天板の接着表面がポリエステルで形成されてなれ
ば、非晶性ポリエステルから形成された筒状フィルムの
接着表面と天板とは、非晶性ポリエステルが比較的に低
温で熱接着可能なため、容易に熱接着され、しかも、互
いにより強固に接着されたものとなる。
In the present invention, it is preferable that the top plate is made of a paper base material, at least an adhesive surface of which is adhered to the cylindrical film, made of polyester.
Since polyesters exhibit good thermal adhesion to each other, if the bonding surface of the top plate is formed of polyester, the bonding surface of the tubular film formed of amorphous polyester and the top plate will be amorphous. Since the conductive polyesters can be thermally bonded at a relatively low temperature, they are easily thermally bonded and more strongly bonded to each other.

【0010】さらに、本発明においては、前記筒状フィ
ルムが結晶性ポリエステルからなる中心層と非晶性ポリ
エステルからなる内面層及び外面層を備えてなるものが
好ましい。結晶性ポリエステルは、非晶性ポリエステル
に比べて耐熱性が有り又腰も強いことから、熱接着時に
フィルムが弱くなり難い。従って、上記構成からなる天
板付きキャップシールは、接着表面となる内面層の非晶
性ポリエステルによって筒状フィルムと天板との十分な
接着強度を備えると共に、結晶性ポリエステルからなる
中心層によって熱接着時におけるフィルムの強度低下が
抑制され、十分なフィルム強度を備えたものとなる。こ
こで、結晶性ポリエステルとは、結晶融解熱が16J/
g以上のものであるが、良好な熱収縮性を得られること
から特に16〜33J/gのものが好ましい。
Further, in the present invention, it is preferable that the tubular film has a central layer made of crystalline polyester and an inner layer and an outer layer made of amorphous polyester. Since crystalline polyester has heat resistance and is stiffer than amorphous polyester, the film is not easily weakened during thermal bonding. Therefore, the cap seal with the top plate having the above-described configuration has a sufficient adhesive strength between the cylindrical film and the top plate by the amorphous polyester of the inner surface layer serving as the bonding surface, and also has the heat resistance by the central layer of the crystalline polyester. A decrease in the strength of the film at the time of bonding is suppressed, and the film has sufficient film strength. Here, crystalline polyester means that the heat of crystal fusion is 16 J /
g or more, but particularly preferably from 16 to 33 J / g because good heat shrinkage can be obtained.

【0011】また、本発明において、前記天板は、少な
くとも前記筒状フィルムに接着される接着表面が未延伸
のポリエステルシートで形成されてなるものであっても
良い。ポリエステルシートは、延伸時に分子配列が整列
して結晶化するものであるが、未延伸で有れば、延伸し
たものに比べて結晶化が抑制されて、非晶性ポリエステ
ルと同様に良好な熱接着性を呈することとなる。従っ
て、非晶性ポリエステル(筒状フィルムの接着表面)と
未延伸ポリエステルシートとの熱接着により、筒状フィ
ルムと天板とがより容易に接着されて、より十分な接着
強度を備えたものとなる。
In the present invention, the top plate may have at least an adhesive surface to be adhered to the tubular film formed of an unstretched polyester sheet. The polyester sheet is one in which the molecular arrangement is aligned and crystallized at the time of stretching.However, if the polyester sheet is not stretched, crystallization is suppressed as compared with the stretched polyester sheet, and good heat is obtained similarly to the amorphous polyester. It will exhibit adhesiveness. Therefore, the tubular film and the top plate can be more easily adhered to each other by the thermal adhesion between the amorphous polyester (the adhesive surface of the tubular film) and the unstretched polyester sheet, and a material having more sufficient adhesive strength can be obtained. Become.

【0012】[0012]

【発明の実施の形態】以下、本発明の実施の形態につい
て、図面を参照しつつ説明する。図1は、本実施形態の
天板付きキャップシールを示す斜視図、図2は図1のA
−A線断面図である。図1に示すように、本実施形態の
天板付きキャップシールは、2条のミシン目21間に形
成された切取片22等の開封手段が設けられた熱収縮性
の筒状フィルム1と、該筒状フィルム1の上部に接着さ
れた天板2とを備えてなる。
Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing a cap seal with a top plate of the present embodiment, and FIG.
FIG. 4 is a cross-sectional view taken along a line A. As shown in FIG. 1, the cap seal with a top plate according to the present embodiment includes a heat-shrinkable tubular film 1 provided with an opening means such as a cutout piece 22 formed between two perforations 21, And a top plate 2 adhered to an upper portion of the tubular film 1.

【0013】図2に示すように、前記筒状フィルム1
は、結晶性ポリエステルからなる中心層1aの両面全面
に非晶性ポリエステルからなる内面層1b、外面層1c
が設けられた3層構造のフィルムによって形成されてい
る。このフィルムは、3層構造で共押出し冷却して得ら
れた未延伸のポリエステルシートを、65〜80℃に加
熱し、3.5〜4.5倍に一軸延伸させて製造される。
さらに、このフィルムは、例えば、厚さ60μm(詳し
くは、内面層5μm、中心層50μm、外面層5μm)
程度に設定されている。そして、得られたフィルムは、
延伸方向が筒状フィルム1の周方向となるように筒状と
し、両側縁を接着剤(溶剤)によって接合することによ
り、筒状に成型されている。尚、筒状フィルム1を80
℃で10秒間加熱した際の収縮率は、例えば、縦方向
(軸方向)に0〜10%、横方向(周方向)に30〜7
0%とされている。
[0013] As shown in FIG.
The inner layer 1b made of amorphous polyester and the outer layer 1c are formed on both surfaces of the central layer 1a made of crystalline polyester.
Is formed of a three-layer film provided with. This film is manufactured by heating an unstretched polyester sheet obtained by co-extrusion and cooling in a three-layer structure to 65 to 80 ° C and uniaxially stretching 3.5 to 4.5 times.
Further, this film has a thickness of, for example, 60 μm (specifically, the inner layer is 5 μm, the center layer is 50 μm, and the outer layer is 5 μm).
Set to about. And the obtained film is
The film is formed in a tubular shape so that the stretching direction is the circumferential direction of the tubular film 1 and both side edges are joined with an adhesive (solvent) to form a tubular shape. In addition, the cylindrical film 1
The shrinkage when heated at 10 ° C. for 10 seconds is, for example, 0 to 10% in the vertical direction (axial direction) and 30 to 7 in the horizontal direction (circumferential direction).
0%.

【0014】前記中心層1aの結晶性ポリエステルとし
ては、例えば、テレフタル酸85モル%とイソフタル酸
15モル%を酸成分とし、エチレングリコール100モ
ル%をグリコール成分としたポリエステル(この場合、
結晶融解熱(Hu)は25J/g)等を使用できる。
As the crystalline polyester of the central layer 1a, for example, a polyester containing 85 mol% of terephthalic acid and 15 mol% of isophthalic acid as an acid component and 100 mol% of ethylene glycol as a glycol component (in this case,
The heat of crystal fusion (Hu) can be 25 J / g) or the like.

【0015】前記内面層1b及び外面層1cの非晶性ポ
リエステルとしては、例えば、テレフタル酸70モル
%、イソフタル酸25モル%及びアジピン酸5モル%を
酸成分とし、エチレングリコール100モル%をグリコ
ール成分としたポリエステル(この場合、結晶融解熱
(Hu)は0J/g)等を使用できる。
As the amorphous polyester of the inner layer 1b and the outer layer 1c, for example, 70 mol% of terephthalic acid, 25 mol% of isophthalic acid and 5 mol% of adipic acid are used as an acid component, and 100 mol% of ethylene glycol is glycol. Polyester (in this case, the heat of crystal fusion (Hu) is 0 J / g) as the component can be used.

【0016】ここで、結晶融解熱(Hu)は、パーキン
・エルマー社製DSC−1Bを使用して測定され、昇温
速度8℃/分で一度融点まで昇温し、常温まで降温した
後、再度昇温した時の融解ピークの面積から求められる
ものである。
Here, the heat of crystal fusion (Hu) is measured using a DSC-1B manufactured by Perkin-Elmer Co., Ltd., and the temperature is raised once to the melting point at a heating rate of 8 ° C./min, and then lowered to room temperature. It is obtained from the area of the melting peak when the temperature is raised again.

【0017】尚、内面層1b、中心層1a、外面層1c
となる層をそれぞれ積層する方法としては、前記共押出
法以外に、別々に作成した各層を構成するフィルムを貼
り合わせるドライラミネート方法等を採用することもで
きる。
The inner layer 1b, the center layer 1a, and the outer layer 1c
As a method of laminating the layers to be formed, in addition to the above-described co-extrusion method, it is also possible to employ a dry laminating method or the like of laminating films constituting each layer separately prepared.

【0018】前記天板2は、平板状で且つ円形に形成さ
れてなり、ポリプロピレンの薄膜(厚さ10〜50μ
m)からなる下面層2bと紙基材(例えば、厚さ0.1
〜1.5mmのボール紙等)からなる中間層2aとポリ
エステルからなる上面層2cとを備え、上面層2cと中
間層2aの間には、紫外線硬化型インキによって印刷さ
れた印刷層2dが適宜設けられて構成されている。
The top plate 2 is formed in a flat plate and circular shape, and is made of a polypropylene thin film (thickness: 10 to 50 μm).
m) and a paper substrate (for example, having a thickness of 0.1
(A 1.5 mm cardboard or the like) and an upper layer 2c made of polyester. Between the upper layer 2c and the intermediate layer 2a, a printing layer 2d printed with an ultraviolet curable ink is appropriately provided. It is provided and configured.

【0019】この天板2としては、例えば、下面がポリ
プロピレン製フィルムによってラミネート加工された厚
さ0.3mmのボール紙の上面に、紫外線硬化型インキ
を用いたオフセット印刷によって、表示、デザイン等を
印刷した後、ポリエステル系樹脂コーティング剤(例え
ば、商品名「セイカダイン T−18」大日精化工業
(株)製、商品名「ブリスパック」、大日本インキ化学
工業(株)製)を用いて厚さ3〜50μmの樹脂コーテ
ィングを施して構成される。
As the top plate 2, for example, a display, a design and the like are formed on an upper surface of a 0.3 mm-thick cardboard having a lower surface laminated with a polypropylene film by offset printing using an ultraviolet curable ink. After printing, using a polyester resin coating agent (for example, trade name “Seikadyne T-18” manufactured by Dainichi Seika Kogyo Co., Ltd., trade name “Brispack”, manufactured by Dainippon Ink and Chemicals, Inc.) It is configured by applying a resin coating of 3 to 50 μm.

【0020】さらに、前記天板2は、筒状フィルム1の
上部側開口部を閉塞すべく、筒状フィルム1上端部3の
内周面の一部に天板2の周縁部4の上面(接着表面)が
熱接着されることにより、筒状フィルム1の上端部3に
接着されている。詳しくは、筒状フィルム1の上端部3
を内周側に且つ水平に屈曲し、屈曲された部分の内周面
(即ち、非晶性ポリエステルからなる内面層1bの表
面)、天板2の周縁部4の上面(即ち、ポリエステル系
樹脂からなる上面層2cの表面)とを熱接着することに
より、筒状フィルム1の上端部3に、天板2が接着され
ている。
Further, the top plate 2 is provided on a part of the inner peripheral surface of the upper end portion 3 of the tubular film 1 so as to close the opening on the upper side of the tubular film 1. The adhesive surface is bonded to the upper end 3 of the tubular film 1 by thermal bonding. Specifically, the upper end 3 of the tubular film 1
To the inner peripheral side and horizontally, the inner peripheral surface of the bent portion (that is, the surface of the inner surface layer 1b made of amorphous polyester), the upper surface of the peripheral portion 4 of the top plate 2 (that is, the polyester resin) The top plate 2 is adhered to the upper end portion 3 of the tubular film 1 by thermal bonding with the upper surface layer 2c made of

【0021】尚、筒状フィルム1と天板2との接着は、
例えば、図3の方法により実施される。即ち、同図
(イ)に示すように、先ず、容器の口部の形状に合わせ
て作成した成形型5の天面に天板2を載置し、該成形型
5及び天板2に前記筒状フィルム1を外嵌した後、全体
を加熱して、筒状フィルム1の上端部3が天板2側(内
周側)に折れ曲がるように且つ折れ曲がった上端部3が
天板2の周縁部4に重なるように収縮させる。次に、同
図(ロ)に示すように、筒状フィルム1の上端部3と天
板2の周縁部4とが重なった部分を、加熱されたシール
具6によって上方から押圧し、筒状フィルム1と天板2
とを熱接着する。
The adhesion between the tubular film 1 and the top plate 2 is as follows.
For example, it is implemented by the method of FIG. That is, as shown in FIG. 1A, first, the top plate 2 is placed on the top surface of a molding die 5 prepared according to the shape of the mouth of the container, and the molding die 5 and the top plate 2 are placed on the top plate 2. After the tubular film 1 is fitted over the outside, the whole is heated so that the upper end portion 3 of the tubular film 1 is bent toward the top plate 2 (inner peripheral side), and the bent upper end portion 3 is a peripheral edge of the top plate 2. It is contracted so as to overlap the part 4. Next, as shown in FIG. 2 (b), a portion where the upper end portion 3 of the tubular film 1 and the peripheral edge portion 4 of the top plate 2 overlap is pressed from above by a heated sealing tool 6, thereby forming a cylindrical shape. Film 1 and top plate 2
And heat bonding.

【0022】本実施形態の天板付きキャップシールを使
用する場合には、例えば、ビア樽等の口部に天板付きキ
ャップシールを被嵌した後、加熱によって筒状フィルム
1を収縮させて、ビア樽等の口部に装着する。
In the case of using the cap seal with the top plate of the present embodiment, for example, after the cap seal with the top plate is fitted to the opening of a vial barrel, the tubular film 1 is shrunk by heating. Attached to the mouth of a beer barrel or the like.

【0023】本実施形態の天板付きキャップシールは、
上記の如く構成されてなるので、以下の利点を有するも
のである。例えば、本実施形態においては、印刷層2d
が紫外線硬化型インキよって印刷されてなるため、イン
キの硬化が速く、製造過程における取扱いが簡便なもの
となる。即ち、印刷した後、上面を樹脂コーティングす
る前の天板2は通常重ね合わせて保管されるが、本実施
形態によれば、インキの硬化が速いことから、重ね合わ
された天板2同士が印刷層2dによって密着する虞が少
なく、製造過程における取扱いの簡便な天板付きキャッ
プシールとなるのである。
The cap seal with a top plate of the present embodiment
Since it is configured as described above, it has the following advantages. For example, in the present embodiment, the printing layer 2d
Is printed with an ultraviolet-curable ink, so that the ink is quickly cured and the handling in the manufacturing process is simple. That is, after printing, the top plate 2 before the resin coating on the upper surface is usually stored in an overlapped state, but according to the present embodiment, since the curing of the ink is fast, the top plates 2 overlapped with each other are printed. There is little danger of adhesion due to the layer 2d, and the cap seal with the top plate is easy to handle in the manufacturing process.

【0024】特に、重ね合わされた天板2同士が印刷層
2dによって密着する虞が少ないことから、密着を防止
する粉ふり処理(粉をかける処理)の必要性が無く、該
粉ふり処理が未処理の場合には、その粉による汚れやカ
ビの発生を防止でき、衛生的な天板付きキャップシール
となるのである。
In particular, since there is little risk that the superimposed top plates 2 will adhere to each other due to the printed layer 2d, there is no need for a dusting process (a process of applying powder) for preventing the adhesion, and the dusting process has not been performed. In the case of treatment, generation of dirt and mold by the powder can be prevented, and a hygienic cap seal with a top plate can be obtained.

【0025】尚、本実施形態の天板付きキャップシール
は、上記の如く構成されたが、本発明のキャップシール
は、上記構成に限定されず、適宜設計変更可能である。
即ち、本実施形態において、天板2は、ポリプロピレン
の薄膜からなる下面層2b、紙基材からなる中間層2a
及びポリエステルからなる上面層2cを備えて構成され
たが、本発明における天板2は、上記構成に限定され
ず、例えば、図4に示す如く、非晶性ポリエステルから
なるシート(例えば、厚さ0.1〜1.0mm)や未延
伸のポリエステルシート(例えば、厚さ0.1〜1.0
mm)のみからなるものであってもよい。未延伸のポリ
エステルシートは、実質上結晶化していないため、筒状
フィルム1の内面層1bと熱接着性が良く、又、透明性
も良いため、例えば、天板を透して容器の口部の確認を
要する場合には、未延伸のポリエステルシートのみから
なるものが非常に好ましい。
Although the cap seal with the top plate of the present embodiment is configured as described above, the cap seal of the present invention is not limited to the above configuration, and the design can be changed as appropriate.
That is, in the present embodiment, the top plate 2 includes a lower surface layer 2b made of a thin film of polypropylene and an intermediate layer 2a made of a paper base material.
And the top plate 2c made of polyester, but the top plate 2 in the present invention is not limited to the above-described structure. For example, as shown in FIG. 0.1 to 1.0 mm) or an unstretched polyester sheet (for example, having a thickness of 0.1 to 1.0 mm).
mm) alone. Since the unstretched polyester sheet is not substantially crystallized, it has good thermal adhesion to the inner surface layer 1b of the tubular film 1, and also has good transparency. When it is necessary to confirm the following, it is very preferable that the sheet is made of only an unstretched polyester sheet.

【0026】また、天板2の形状も特に限定されず、例
えば、図5に示す如く、周縁部4の接着表面が筒状フィ
ルム1の内周面に沿うように屈曲されているものであっ
てよく、又、上面視楕円形、矩形等でもよく、容器の口
部に応じて適宜設計変更可能である。
The shape of the top plate 2 is not particularly limited. For example, as shown in FIG. 5, the bonding surface of the peripheral portion 4 is bent so as to be along the inner peripheral surface of the tubular film 1. Alternatively, the design may be elliptical, rectangular, or the like when viewed from above, and the design can be changed as appropriate according to the mouth of the container.

【0027】さらに、本実施形態の筒状フィルム1の接
着表面を形成する非晶性ポリエステルとしては、結晶融
解熱(Hu)が0J/gのものを例示したが、本発明に
おいては、0〜15J/gのものを使用することができ
る。但し、天板2との優れた接着性を考慮すると、0〜
12.5J/gのものが好ましい。また、筒状フィルム
1としては、中心層1a、内面層1b及び外面層1cの
3層からなるものを例示したが、非晶性ポリエステルの
単層からなるものであっても良い。
Further, as the amorphous polyester forming the adhesive surface of the tubular film 1 of the present embodiment, a polyester having a heat of crystal fusion (Hu) of 0 J / g is exemplified. 15 J / g can be used. However, considering excellent adhesiveness to the top plate 2, 0 to 0
12.5 J / g is preferred. Further, as the cylindrical film 1, a film composed of three layers of the central layer 1a, the inner surface layer 1b and the outer surface layer 1c is illustrated, but a film composed of a single layer of amorphous polyester may be used.

【0028】尚、本発明の筒状フィルム1や天板2に使
用されるポリエステルとしては、ポリエチレンテレフタ
レート(エチレンテレフタレートと他のモノマーとの共
重合物を含む)、ポリブチレンテレフタレート(ブチレ
ンテレフタレートと他のモノマーとの共重合物を含む)
の他、ポリカルボン酸と多価アルコールとの縮重合物を
主成分とする樹脂を適宜使用することができる。
The polyester used for the tubular film 1 and the top plate 2 of the present invention includes polyethylene terephthalate (including a copolymer of ethylene terephthalate and other monomers) and polybutylene terephthalate (butylene terephthalate and other monomers). (Including copolymers with monomers)
In addition, a resin containing a polycondensate of a polycarboxylic acid and a polyhydric alcohol as a main component can be appropriately used.

【0029】[0029]

【発明の効果】以上のように、本発明にかかる天板付き
キャップシールは、筒状フィルムと天板との十分な接着
強度を備え、しかも、接着表面がポリ塩化ビニルで形成
されたものに比べて、含有塩素が少なく又は無く、焼却
時に有毒ガスの発生する虞も低減されたものとなる。
As described above, the cap seal with the top plate according to the present invention has a sufficient adhesive strength between the tubular film and the top plate, and has a bonding surface formed of polyvinyl chloride. In comparison, the chlorine content is small or no, and the danger of generating toxic gas during incineration is reduced.

【図面の簡単な説明】[Brief description of the drawings]

【図1】一実施形態を示す斜視図。FIG. 1 is a perspective view showing one embodiment.

【図2】図1のA−A線断面図。FIG. 2 is a sectional view taken along line AA of FIG.

【図3】(イ)(ロ)共に、一実施形態の製造工程を示
す断面図。
FIGS. 3A and 3B are cross-sectional views illustrating a manufacturing process of one embodiment.

【図4】他の実施形態を示す断面図。FIG. 4 is a sectional view showing another embodiment.

【図5】他の実施形態を示す断面図。FIG. 5 is a cross-sectional view showing another embodiment.

【符号の説明】[Explanation of symbols]

1・・・筒状フィルム、1a・・・中心層、1b・・・内面層、
1c・・・外面層、2・・・天板
1 ... cylindrical film, 1a ... central layer, 1b ... inner surface layer,
1c: outer surface layer, 2: top plate

Claims (4)

【特許請求の範囲】[Claims] 【請求項1】 熱収縮性の筒状フィルム(1)と、該筒
状フィルム(1)の上部の内周面に接着された天板
(2)とを備え、容器の口部に装着される天板付きキャ
ップシールにおいて、 前記筒状フィルム(1)の内周面のうち、少なくとも前
記天板(2)が接着される接着表面は非晶性ポリエステ
ルから形成され、該接着表面に前記天板(2)が熱接着
されてなることを特徴とする天板付きキャップシール。
1. A heat-shrinkable tubular film (1), and a top plate (2) adhered to an inner peripheral surface of an upper portion of the tubular film (1), which is attached to an opening of a container. In the cap seal with a top plate, at least an adhesive surface of the inner peripheral surface of the tubular film (1) to which the top plate (2) is adhered is formed of amorphous polyester, and the top surface is attached to the adhesive surface. A cap seal with a top plate, wherein the plate (2) is thermally bonded.
【請求項2】 前記天板(2)は、少なくとも前記筒状
フィルム(1)に接着される接着表面がポリエステルで
形成された、紙基材よりなる請求項1記載の天板付きキ
ャップシール。
2. The cap seal with a top plate according to claim 1, wherein said top plate (2) is made of a paper base material, at least an adhesive surface of which is adhered to said tubular film (1) is made of polyester.
【請求項3】 前記筒状フィルム(1)は、結晶性ポリ
エステルからなる中心層(1a)と非晶性ポリエステル
からなる内面層(1b)及び外面層(1c)を備えてな
る請求項1又は2記載の天板付きキャップシール。
3. The cylindrical film (1) comprises a central layer (1a) made of crystalline polyester, an inner layer (1b) and an outer layer (1c) made of amorphous polyester. 2. The cap seal with the top plate according to 2.
【請求項4】 前記天板(2)は、少なくとも前記筒状
フィルム(1)に接着される接着表面が、未延伸のポリ
エステルシートで形成されてなる請求項1乃至3の何れ
かに記載の天板付きキャップシール。
4. The top plate (2) according to any one of claims 1 to 3, wherein at least a bonding surface to be bonded to the tubular film (1) is formed of an unstretched polyester sheet. Cap seal with top plate.
JP2000036340A 2000-02-15 2000-02-15 Cap seal with top plate Expired - Fee Related JP3592987B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2000036340A JP3592987B2 (en) 2000-02-15 2000-02-15 Cap seal with top plate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2000036340A JP3592987B2 (en) 2000-02-15 2000-02-15 Cap seal with top plate

Publications (2)

Publication Number Publication Date
JP2001225855A true JP2001225855A (en) 2001-08-21
JP3592987B2 JP3592987B2 (en) 2004-11-24

Family

ID=18560392

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2000036340A Expired - Fee Related JP3592987B2 (en) 2000-02-15 2000-02-15 Cap seal with top plate

Country Status (1)

Country Link
JP (1) JP3592987B2 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003081304A (en) * 2001-09-12 2003-03-19 Dainippon Printing Co Ltd Cap seal made of resin
JP2009126544A (en) * 2007-11-22 2009-06-11 St Kk Measuring cap and method for manufacturing measuring cap
US8282754B2 (en) 2007-04-05 2012-10-09 Avery Dennison Corporation Pressure sensitive shrink label
US8535464B2 (en) 2007-04-05 2013-09-17 Avery Dennison Corporation Pressure sensitive shrink label
JP2014125251A (en) * 2012-12-27 2014-07-07 Gunze Ltd Cylindrical heat-shrinkable film for suspension product package, production method thereof, and package
US9221573B2 (en) 2010-01-28 2015-12-29 Avery Dennison Corporation Label applicator belt system

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003081304A (en) * 2001-09-12 2003-03-19 Dainippon Printing Co Ltd Cap seal made of resin
US8282754B2 (en) 2007-04-05 2012-10-09 Avery Dennison Corporation Pressure sensitive shrink label
US8535464B2 (en) 2007-04-05 2013-09-17 Avery Dennison Corporation Pressure sensitive shrink label
JP2009126544A (en) * 2007-11-22 2009-06-11 St Kk Measuring cap and method for manufacturing measuring cap
US9221573B2 (en) 2010-01-28 2015-12-29 Avery Dennison Corporation Label applicator belt system
US9637264B2 (en) 2010-01-28 2017-05-02 Avery Dennison Corporation Label applicator belt system
JP2014125251A (en) * 2012-12-27 2014-07-07 Gunze Ltd Cylindrical heat-shrinkable film for suspension product package, production method thereof, and package

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