JP2001322657A - Molded sheet for shrink cover and packaging body with shrink cover - Google Patents
Molded sheet for shrink cover and packaging body with shrink coverInfo
- Publication number
- JP2001322657A JP2001322657A JP2000141308A JP2000141308A JP2001322657A JP 2001322657 A JP2001322657 A JP 2001322657A JP 2000141308 A JP2000141308 A JP 2000141308A JP 2000141308 A JP2000141308 A JP 2000141308A JP 2001322657 A JP2001322657 A JP 2001322657A
- Authority
- JP
- Japan
- Prior art keywords
- sheet
- shrink
- tab
- skirt
- molded sheet
- 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、熱収縮性のシート
を、天板部と、その周縁から垂下するスカート部とを有
する形状に成形したもので、開口部の周縁にフランジ部
を有する容器に被せ、スカート部を熱収縮させてフラン
ジ部の下面側に巻き込ませて取り付けるシュリンク蓋用
成形シート及びそれを用いたシュリンク蓋付包装体に関
する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a container having a heat-shrinkable sheet formed into a shape having a top plate and a skirt hanging down from the periphery thereof, and having a flange at the periphery of the opening. TECHNICAL FIELD The present invention relates to a molded sheet for a shrink lid and a package body with a shrink lid using the shrink lid formed by heat shrinking a skirt portion to be rolled and attached to a lower surface side of a flange portion.
【０００２】[0002]
【従来の技術】従来、シュリンク蓋用成形シートとして
は、０．１３〜０．１８ｍｍのポリスチレンシートを成
形したものであって、それを用いたシュリンク蓋付包装
体について、シュリンク蓋を取り除いて開封するとき
に、熱収縮されているスカート部から天板部を横断する
方向にシュリンク蓋を切り開くことができるよう、スカ
ート部の下縁からタブを延出させ、このタブの両側にノ
ッチを形成したものが知られている（特開平８−１３３
２８０号公報）。2. Description of the Related Art Conventionally, as a molded sheet for a shrink lid, a polystyrene sheet having a thickness of 0.13 to 0.18 mm is molded, and a shrink lid-containing package using the same is removed and opened. When doing, a tab was extended from the lower edge of the skirt part so that the shrink lid could be cut open in the direction crossing the top plate part from the skirt part that was heat shrunk, and notches were formed on both sides of this tab. Is known (JP-A-8-133)
No. 280).
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、上記従
来のシュリンク蓋用成形シート及びそれを用いたシュリ
ンク蓋付包装体には次のような問題がある。However, the above-mentioned conventional molded sheet for a shrink lid and the package with a shrink lid using the same have the following problems.
【０００４】（１）タブを引っ張って両ノッチから裂け
目を伝播させるときに、裂け目の伝播方向が安定せず、
途中でタブがちぎれやすい。また、同時に２箇所から裂
かなければならず、特に開封開始時に力がいる。(1) When a tab is pulled to propagate a tear from both notches, the propagation direction of the tear is not stable,
Tabs are easy to tear on the way. In addition, it must be torn from two places at the same time, and there is force especially at the start of opening.
【０００５】（２）天板部を横断してシュリンク蓋を切
り開くことができても、シュリンク蓋の周縁はフランジ
付容器のフランジ部に巻き付いているので、切れ目から
左右に引き開いて剥がさなければシュリンク蓋を除去で
きず、容器の開放に手間がかかる。(2) Even if the shrink lid can be cut open across the top plate, the periphery of the shrink lid is wrapped around the flange of the flanged container. The shrink lid cannot be removed, and it takes time to open the container.
【０００６】本発明は、上記従来の問題点に鑑みてなさ
れたもので、シュリンク蓋付包装体の開封時に確実かつ
簡単にシュリンク蓋を除去できるようにすることを目的
とする。SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and has as its object to make it possible to reliably and easily remove a shrink lid when opening a package with a shrink lid.
【０００７】[0007]
【課題を解決するための手段】本発明の第１は、熱収縮
性シートで構成され、天板部と、天板部の周縁から垂下
するスカート部を備えたシュリンク蓋用成形シートにお
いて、厚みが２０〜７５μｍで、ＯＲＳが縦横共に４〜
２５ｋｇ／ｃｍ2の二軸延伸ポリスチレン系樹脂フィル
ムを２枚接着した積層シートで構成され、スカート部の
下縁からタブが延出していると共に、タブの片側に隣接
してスカート部の下縁にノッチ部を有することを特徴と
するシュリンク蓋用成形シートを提供するものである。A first object of the present invention is to provide a molded sheet for a shrink lid which is constituted by a heat-shrinkable sheet and has a top plate and a skirt hanging down from the periphery of the top plate. Is 20-75 μm and ORS is 4 ~
It is composed of a laminated sheet in which two biaxially oriented polystyrene resin films each having a thickness of 25 kg / cm 2 are adhered to each other. A tab extends from the lower edge of the skirt portion, and the lower edge of the skirt portion is adjacent to one side of the tab. It is intended to provide a molded sheet for a shrink lid characterized by having a notch portion.
【０００８】上記本発明の第１は、タブの一側縁がスカ
ート部の下縁と一連に連なり、ノッチ部が、タブの他側
縁の基部に、当該ノッチ部が形成されたスカート部の下
縁に対してタブ寄りに斜めに向けて形成されているこ
と、貼り合わされた２枚の二軸延伸ポリスチレン系樹脂
フィルム間に印刷が施されていること、をその好ましい
態様として含むものである。In the first aspect of the present invention, one side edge of the tab is continuous with the lower edge of the skirt portion, and the notch portion is formed at the base of the other side edge of the tab on the skirt portion having the notch portion. The preferred embodiment includes that the lower edge is formed obliquely toward the tab and closer to the tab, and that printing is performed between the two bonded biaxially oriented polystyrene resin films.
【０００９】また、本発明の第２は、上記本発明の第１
に係るシュリンク蓋用成形シートが、開口部周縁にフラ
ンジ部を有する容器に被せられ、スカート部が熱収縮さ
れてフランジ部の下面側に巻き込まれていること、すな
わち、スカート部端部の内径がフランジ部端部との接触
点でのスカート部内径より小さくなっていることを特徴
とするシュリンク蓋付包装体を提供するものである。A second aspect of the present invention is the first aspect of the present invention.
The shrink lid forming sheet according to the present invention is covered with a container having a flange on the periphery of the opening, and the skirt is thermally shrunk and rolled up on the lower surface side of the flange. A package with a shrink lid is provided which is smaller than the inner diameter of the skirt at the point of contact with the end of the flange.
【００１０】[0010]
【発明の実施の形態】まず、図１に基づいて本発明に係
るシュリンク蓋用成形シートを説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First, a molded sheet for a shrink lid according to the present invention will be described with reference to FIG.
【００１１】図示されるように、本発明に係るシュリン
ク蓋用成形シート１は、天板部２と、天板部２の周縁か
ら垂下するスカート部３を有する蓋形状をなしている。As shown, the molded sheet 1 for a shrink lid according to the present invention has a lid shape having a top plate portion 2 and a skirt portion 3 hanging down from the periphery of the top plate portion 2.
【００１２】スカート部３の下縁からは外方にタブ４が
延出している。図示されているタブ４は、対角位置に２
箇所設けられている。タブ４は１箇所でもよいが、上記
のように２箇所設けたり、更にはそれ以上設けることも
できる。A tab 4 extends outward from the lower edge of the skirt 3. The tabs 4 shown are 2 in the diagonal position.
It is provided in places. The tab 4 may be provided at one place, but may be provided at two places as described above, or more.
【００１３】各タブ４は、それぞれ一側縁がスカート部
３の下縁の延長方向に一連に連なり、他側縁がスカート
部３の下縁と交差した状態で設けられている。また、各
タブ４の上記他側縁の基部にはＶ形のノッチ部５が形成
されている。このノッチ部５は、後述する本シュリンク
蓋付包装体の開封時の引き裂き開始部となるもので、当
該ノッチ部５が形成されたスカート部３の下縁に対して
タブ４寄りに斜めに向けて形成されている。このような
タブ４とノッチ５とすると、ノッチ５を起点とする裂け
目の伝播を後述する方向に誘導しやすくなる。Each of the tabs 4 is provided such that one side edge thereof is continuously connected to the lower edge of the skirt portion 3 in the direction of extension of the lower edge of the skirt portion 3 and the other side edge crosses the lower edge of the skirt portion 3. A V-shaped notch 5 is formed at the base of the other side edge of each tab 4. The notch portion 5 serves as a tearing start portion when the present shrink lid-equipped package is opened, and is directed obliquely toward the tab 4 with respect to the lower edge of the skirt portion 3 where the notch portion 5 is formed. It is formed. With such tabs 4 and notches 5, it is easy to guide the propagation of the tear starting from the notch 5 in the direction described later.
【００１４】本シュリンク蓋用成形体シート１は、熱収
縮性シートに、圧空成形、真空成形若しくはプレス成形
などによって、上記天板部２の周縁からスカート部３が
垂下した形状を付与した後、輪郭形状に沿って打ち抜く
ことで得ることができる。The molded sheet 1 for a shrink lid is provided with a heat-shrinkable sheet having a shape in which a skirt portion 3 hangs down from a peripheral edge of the top plate portion 2 by pressure forming, vacuum forming, press forming, or the like. It can be obtained by punching along the contour shape.
【００１５】次に、上記シュリンク蓋用成形シート１を
用いた本発明に係るシュリンク蓋付包装体について図２
〜図４で説明する。Next, a package with a shrink lid according to the present invention using the molded sheet 1 for a shrink lid is shown in FIG.
4 to FIG.
【００１６】本発明に係るシュリンク蓋付包装体は、図
２に示されるように、開口部の周囲にフランジ部６を有
する容器７上に上記シュリンク蓋用成形シート１を被
せ、天板部２で容器７の開口部を覆うと共に、フランジ
部６の縁部からスカート部３を垂下させ、容器７の側方
から赤外線、熱風などを当ててスカート部３を加熱し、
図３に示されるように、スカート部３を熱収縮させてフ
ランジ部６の下面側に巻き込ませ、シュリンク蓋用成形
シート１を容器７に取り付けられたシュリンク蓋１′と
することで得られる。図１で説明したタブ４及びノッチ
部５は、上記熱収縮で多少変形するものの、フランジ部
６の下面側に巻き込まれた状態で残されることになる。As shown in FIG. 2, the package with a shrink lid according to the present invention comprises a container 7 having a flange 6 around an opening and the shrink lid forming sheet 1 covered thereon. While covering the opening of the container 7, the skirt 3 is hung down from the edge of the flange 6, and the skirt 3 is heated by applying infrared rays, hot air, etc. from the side of the container 7,
As shown in FIG. 3, the skirt portion 3 is thermally shrunk and rolled into the lower surface side of the flange portion 6 to obtain the shrink lid forming sheet 1 as the shrink lid 1 ′ attached to the container 7. Although the tab 4 and the notch portion 5 described with reference to FIG. 1 are slightly deformed by the heat shrinkage, the tab 4 and the notch portion 5 are left in a state of being caught on the lower surface side of the flange portion 6.
【００１７】シュリンク蓋用成形シート１の径は、容器
７に被せやすいよう、容器７の径より５〜２０％大きく
しておくことが好ましい。また、シュリンク蓋用成形シ
ート１のスカート部３の高さは、容器７の高さの７〜２
５％程度が好ましく、特に容器７上に被せたときの安定
性から、７ｍｍ以上であることが好ましい。The diameter of the shrink lid forming sheet 1 is preferably 5 to 20% larger than the diameter of the container 7 so as to cover the container 7 easily. The height of the skirt 3 of the molded sheet 1 for shrink lid is 7 to 2 of the height of the container 7.
It is preferably about 5%, and particularly preferably 7 mm or more from the viewpoint of stability when covered on the container 7.
【００１８】本発明は、特に開封機構に特徴を有する。
本発明のシュリンク蓋付包装体においては、図１に示さ
れるタブ４を摘んで引っ張ることにより、ノッチ部５を
起点とした裂け目をフランジ部６の先端部付近に沿って
伝播させることができる。即ち、本発明によれば、図４
に示されるように、ノッチ部５（図１参照）を起点とし
て、裂け目をフランジ部６の先端部付近に沿って伝播さ
せ、熱収縮してフランジ部６の下面側に巻き込まれたス
カート部３部分を、フランジ部６に沿って天板部２から
切り離して、テープ状に引き剥がすことができる。従っ
て、上記ノッチ５を起点とした引き裂き後は、容器７上
にはスカート部３が除去された天板部２のみが残される
ことになり、これを摘み取るだけでシュリンク蓋１′を
取り外して容器７を開放することができる。The present invention is particularly characterized by an opening mechanism.
In the package with the shrink lid of the present invention, the tear starting from the notch 5 can be propagated along the vicinity of the tip of the flange 6 by picking and pulling the tab 4 shown in FIG. That is, according to the present invention, FIG.
As shown in FIG. 5, the skirt 3 propagates from the notch 5 (see FIG. 1) as a starting point along the vicinity of the tip of the flange 6, and is thermally contracted and rolled into the lower surface of the flange 6. The portion can be cut off from the top plate 2 along the flange portion 6 and peeled off in a tape shape. Therefore, after the tearing with the notch 5 as a starting point, only the top plate 2 from which the skirt portion 3 has been removed is left on the container 7. 7 can be opened.
【００１９】上記のような開封機構は、本シュリンク蓋
用成形シート１を構成する熱収縮性シートとして、厚み
が２０〜７５μｍで、ＯＲＳ（ＡＳＴＭ−Ｄ−１５０４
に準拠し、該当フィルムのビカット軟化点＋３０℃のシ
リコーンオイル浴中で測定したピーク応力値。）が縦横
共に４〜２５ｋｇ／ｃｍ2の二軸延伸ポリスチレン系樹
脂フィルムを２枚接着した積層シートを用いることで得
ることができる。このような積層シートを用いることで
上記開封機構が得られる理由は必ずしも明らかではな
い。しかし、シュリンク蓋付包装体におけるシュリンク
蓋１′は、フランジ部６の先端部付近を境に、スカート
部３側と天板部２側で熱収縮状態が大きく相違すること
から、本発明で用いる積層シートは、この熱収縮状態の
境界に沿って切れやすくなる性質を有するものであると
考えられる。The opening mechanism as described above is a heat-shrinkable sheet constituting the molded sheet 1 for a shrink lid, having a thickness of 20 to 75 μm and an ORS (ASTM-D-1504).
The peak stress value measured in a silicone oil bath at the Vicat softening point of the applicable film + 30 ° C according to ) Can be obtained by using a laminated sheet in which two biaxially oriented polystyrene resin films of 4 to 25 kg / cm 2 in both length and width are bonded. It is not always clear why the above opening mechanism is obtained by using such a laminated sheet. However, the shrink lid 1 ′ in the package with the shrink lid is used in the present invention because the heat shrink state is largely different between the skirt 3 side and the top plate 2 side near the front end of the flange 6. It is considered that the laminated sheet has a property of being easily cut along the boundary in the heat shrink state.
【００２０】本シュリンク蓋付包装体は、上記のよう
に、熱収縮したスカート部３を容器７の周囲からぐるり
と切り取ることで開封されるもので、半周ずつ開封でき
るよう、前述の対角位置に２箇所タブ４を設けておく
と、開封作業がさらに行いやすくなる。As described above, the package with a shrink lid is opened by cutting the heat-shrinked skirt portion 3 from the periphery of the container 7, and is opened at the above-mentioned diagonal position so that it can be opened half a circumference at a time. If two tabs 4 are provided in the opening, the opening operation can be further easily performed.
【００２１】更に本発明について説明すると、本発明の
シュリンク蓋用成形シート１は、単層シートではなく、
二軸延伸ポリスチレン系樹脂フィルムを２枚接着積層し
た積層シートを用いて形成されるものである。単層の二
軸延伸ポリスチレン系樹脂フィルムでは、シュリンク蓋
用成形シート１への良好な成形性（型再現性）、必要な
天板部２の張り、フランジ部６へのスカート部３のきれ
いな巻き付き性などを満たすと共に、タブ４をちぎれさ
せることなくフランジ部６の先端部に沿って裂け目を伝
播させることが困難になる。To further explain the present invention, the molded sheet 1 for a shrink lid of the present invention is not a single-layer sheet,
It is formed using a laminated sheet in which two biaxially stretched polystyrene resin films are bonded and laminated. In the case of a single-layer biaxially oriented polystyrene resin film, good formability (reproducibility of the mold) on the molded sheet 1 for a shrink lid, necessary tension of the top plate 2, clean winding of the skirt 3 around the flange 6. In addition to satisfying the requirements, it becomes difficult to propagate a tear along the tip of the flange 6 without breaking the tab 4.
【００２２】各二軸延伸ポリスチレン系樹脂フィルムを
構成するポリスチレン系樹脂とは、ビニル芳香族炭化水
素の重合体、ビニル芳香族炭化水素とこれと共重合可能
な単量体との共重合体及びゴム強化ビニル芳香族炭化水
素重合体から選ばれる重合体組成物をいい、これらの中
でも全重合体組成物に含有されるビニル芳香族炭化水素
が９３重量％以上の重合体組成物が好ましい。また、ビ
ニル芳香族炭化水素とは、スチレン、ｏ−メチルスチレ
ン、ｐ−メチルスチレンなどのスチレン系単量体をい
う。The polystyrene resin constituting each biaxially stretched polystyrene resin film includes a polymer of a vinyl aromatic hydrocarbon, a copolymer of a vinyl aromatic hydrocarbon and a monomer copolymerizable therewith, It refers to a polymer composition selected from rubber-reinforced vinyl aromatic hydrocarbon polymers, and among these, a polymer composition containing 93% by weight or more of vinyl aromatic hydrocarbons contained in the entire polymer composition is preferable. In addition, the vinyl aromatic hydrocarbon refers to a styrene-based monomer such as styrene, o-methylstyrene, and p-methylstyrene.
【００２３】好ましいポリスチレン系樹脂としては、透
明性と剛性の高さから、汎用ポリスチレンを挙げること
ができる。特に、汎用ポリスチレンに、透明性を損なわ
ない範囲で、例えば脂肪族不飽和カルボン酸エステルと
の共重合体などを混合すると、成形性を向上させること
ができるので好ましい。As a preferred polystyrene resin, general-purpose polystyrene can be mentioned because of its high transparency and rigidity. In particular, it is preferable to mix a general-purpose polystyrene with a copolymer with an aliphatic unsaturated carboxylic acid ester, for example, as long as the transparency is not impaired, since the moldability can be improved.
【００２４】各二軸延伸ポリスチレン系樹脂フィルムを
構成するポリスチレン系樹脂は、全樹脂組成物のビカッ
ト軟化点（ＡＳＴＭ−Ｄ−１５０４に準拠し、該当樹脂
組成物を２００℃で厚み４ｍｍのシートとし、荷重１ｋ
ｇ、昇温速度２℃／分の条件で測定した値。）が９０℃
を超え１１５℃未満であることが好ましく、更に好まし
くは９５℃以上１１０℃以下である。ビカット軟化点が
９０℃以下であると、熱収縮挙動が鋭敏になりすぎ、タ
ブ４が収縮しすぎたり天板部２が変形しやすくなる他、
シュリンク蓋１′の耐熱性が不足しやすい。ビカット軟
化点が１１５℃以上となると、シュリンク蓋用成形シー
ト１への成形時の温度が高くなって、成形サイクルが長
くなりやすい。The polystyrene-based resin constituting each biaxially stretched polystyrene-based resin film is a sheet having a thickness of 4 mm at 200 ° C. at 200 ° C. according to the Vicat softening point of all resin compositions (ASTM-D-1504). , Load 1k
g, a value measured under the condition of a heating rate of 2 ° C./min. ) At 90 ° C
And preferably less than 115 ° C, more preferably 95 ° C or more and 110 ° C or less. When the Vicat softening point is 90 ° C. or lower, the heat shrinkage behavior becomes too sharp, the tabs 4 shrink too much, and the top plate 2 is easily deformed.
The heat resistance of the shrink lid 1 'tends to be insufficient. When the Vicat softening point is 115 ° C. or higher, the temperature at the time of molding into the shrink lid molding sheet 1 increases, and the molding cycle tends to be prolonged.
【００２５】接着積層する２枚の二軸延伸ポリスチレン
系樹脂フィルムのビカット軟化点は等しいことが最も好
ましいが、ビカット軟化点に差がある場合、１０℃未満
であることが好ましい。ビカット軟化点の差が大きすぎ
ると、シュリンク蓋用成形シート１への成形時にカール
して型再現性（成形型に忠実な形状へ成形可能であるこ
と。）が低下しやすくなる。It is most preferable that the two biaxially oriented polystyrene resin films to be adhered and laminated have the same Vicat softening point, but if there is a difference in the Vicat softening point, it is preferable that the temperature be less than 10 ° C. If the difference in the Vicat softening point is too large, the curl occurs during molding into the molded sheet 1 for a shrink lid, and the mold reproducibility (must be able to be molded into a shape faithful to the molding die) tends to be reduced.
【００２６】各二軸延伸ポリスチレン系樹脂フィルム
は、良好な開封性（タブ４をちぎれさせることなくフラ
ンジ部６の先端部に沿って裂け目を伝播させられるこ
と。）と、天板部２の張りと、フランジ部６へのスカー
ト部３のきれいな巻き付き状態を得るために、ＯＲＳが
縦横共に４〜２５ｋｇ／ｃｍ2であることが必要で、縦
横いずれか一方のＯＲＳが１０ｋｇ／ｃｍ2以上である
ことが好ましい。二軸延伸ポリスチレン系樹脂フィルム
の縦横いずれかのＯＲＳが４ｋｇ／ｃｍ2未満である
と、天板部２と間の物性の差が小さいと同時に収縮力が
弱く、スカート部３を熱収縮させた際、裂け目の伝播が
フランジ部６の先端部から外れてタブ４がちぎれやすく
なり、開封性が低下すると共に、天板部２が弛みがちに
なったり、容器７のフランジ部３にきれいにスカート部
３が巻き付きにくくなる。二軸延伸ポリスチレン系樹脂
フィルムの縦横いずれかのＯＲＳが２５ｋｇ／ｃｍ2を
超えると、スカート部３を熱収縮させた際に脆弱になり
すぎると同時に収縮力が強くなりすぎ、タブ４がちぎれ
やすくなって開封性が低下すると共に、容器７のフラン
ジ部６が収縮力で変形したり、これに伴って天板部２が
波打ちやすくなる。Each of the biaxially stretched polystyrene resin films has a good opening property (a tear can be propagated along the tip of the flange portion 6 without tearing the tab 4), and the tension of the top plate portion 2 can be improved. If, in order to obtain a clean winding state of the skirt portion 3 to the flange portion 6, ORS is required to be 4~25kg / cm 2 in both the vertical and horizontal directions, vertical and horizontal one of ORS is at 10 kg / cm 2 or more Is preferred. When the ORS in either the length or width of the biaxially stretched polystyrene resin film is less than 4 kg / cm 2 , the difference in physical properties between the top plate 2 and the shrinkage force is weak, and the skirt 3 was thermally shrunk. At this time, the propagation of the tear is detached from the front end of the flange portion 6 and the tab 4 is easily torn, so that the opening property is deteriorated, the top plate portion 2 tends to loosen, and the flange portion 3 of the container 7 has a clean skirt portion. 3 becomes difficult to wind. If the ORS in either the length or width of the biaxially stretched polystyrene-based resin film exceeds 25 kg / cm 2 , the skirt 3 becomes too brittle when thermally shrunk and the shrinking force becomes too strong, and the tab 4 is easily torn. As a result, the opening property is reduced, and the flange portion 6 of the container 7 is deformed by the contraction force, and accordingly, the top plate portion 2 is easily wavy.
【００２７】接着積層する２枚の二軸延伸ポリスチレン
系樹脂フィルムのＯＲＳは等しいことが最も好ましい
が、ＯＲＳに差がある場合、縦横共に１５ｋｇ／ｃｍ2
以下であることが好ましい。ＯＲＳの差が大きすぎる
と、シュリンク蓋用成形シート１への成形時にカールし
て型再現性が低下しやすくなると共に、スカート部３が
きれいにフランジ部６に巻き付きにくくなる場合もあ
る。It is most preferable that the ORS of the two biaxially stretched polystyrene resin films to be bonded and laminated is equal, but if there is a difference in the ORS, the ORS is 15 kg / cm 2 in both the vertical and horizontal directions.
The following is preferred. If the difference between the ORSs is too large, the curl may occur during molding into the molded sheet 1 for a shrink lid, the mold reproducibility may be easily reduced, and the skirt portion 3 may not be easily wound around the flange portion 6 in some cases.
【００２８】各二軸延伸ポリスチレン系樹脂フィルム
は、１１５℃のシリコーンオイル中に１０秒浸漬させた
ときの熱収縮率が縦横共に１０〜７５％であることが好
ましい。収縮率が小さすぎると、スカート部３を熱収縮
させたときの収縮量が不足し、フランジ部６への巻き付
き状態の仕上がりが悪くなりやすい。収縮率が大きすぎ
ると、スカート部３の熱収縮時にタブ４が過剰に熱収縮
しやすい。Each biaxially stretched polystyrene resin film preferably has a heat shrinkage of 10 to 75% in both length and width when immersed in silicone oil at 115 ° C. for 10 seconds. If the shrinkage is too small, the amount of shrinkage when the skirt portion 3 is thermally shrunk is insufficient, and the finish in the state of being wound around the flange portion 6 tends to be poor. If the shrinkage is too large, the tab 4 tends to excessively shrink when the skirt 3 shrinks.
【００２９】接着積層する２枚の二軸延伸ポリスチレン
系樹脂フィルムの熱収縮率は等しいことが最も好ましい
が、収縮率に差がある場合、縦横共に３０％以下である
ことが好ましい。収縮率の差が大きすぎると、シュリン
ク蓋用成形シート１への成形時にカールして型再現性が
低下しやすくなると共に、スカート部３がきれいにフラ
ンジ部６に巻き付きにくくなる場合もある。It is most preferable that the two sheets of the biaxially stretched polystyrene resin film to be bonded and laminated have the same heat shrinkage, but if there is a difference in the shrinkage, it is preferable that the heat shrinkage be 30% or less in both the vertical and horizontal directions. If the difference in the shrinkage is too large, the sheet may be curled at the time of molding into the shrink lid molding sheet 1, and the reproducibility of the mold may be easily reduced, and the skirt portion 3 may not be easily wound around the flange portion 6 in some cases.
【００３０】各二軸延伸ポリスチレン系樹脂フィルム
は、厚みが２０〜７５μｍであることが必要で、好まし
くは２５〜７０μｍである。二軸延伸ポリスチレン系樹
脂フィルムの厚みが２５μｍ未満であると、得られる積
層シートをシュリンク蓋用成形シート１へ成形する際の
型再現性が悪く、シュリンク蓋用成形シート１が変形し
やすくなる。また、二軸延伸ポリスチレン系樹脂フィル
ムの厚みが７５μｍを超えると、開封の際の裂け目をフ
ランジ部６の先端部に沿わせにくくなったり、タブ４が
ちぎれやすくなって、開封性が低下する。Each biaxially oriented polystyrene resin film needs to have a thickness of 20 to 75 μm, preferably 25 to 70 μm. If the thickness of the biaxially oriented polystyrene resin film is less than 25 μm, the reproducibility of the mold when the obtained laminated sheet is formed into the molded sheet 1 for a shrink lid is poor, and the molded sheet 1 for a shrink lid is easily deformed. If the thickness of the biaxially stretched polystyrene-based resin film exceeds 75 μm, it is difficult to make the tear at the time of opening along the tip of the flange portion 6 or the tab 4 is easily torn, and the opening property is reduced.
【００３１】二軸延伸ポリスチレン系樹脂フィルムを２
枚接着積層することで得られる積層シートの全体厚みは
６０〜１５０μｍであることが好ましい。積層シートの
全体厚みが小さすぎたり大きすぎると、上記と同様に、
シュリンク蓋用成形シート１への成形時の型再現性が悪
くなつて変形しやすくなったり、開封性が低下しやすく
なる。A biaxially stretched polystyrene resin film was
The total thickness of the laminated sheet obtained by bonding and laminating the sheets is preferably from 60 to 150 μm. If the overall thickness of the laminated sheet is too small or too large, as above,
When the reproducibility of the mold at the time of molding into the molded sheet 1 for the shrink lid is deteriorated, the mold is easily deformed, and the opening property is easily deteriorated.
【００３２】接着積層される２枚の二軸延伸ポリスチレ
ン系樹脂フィルムの厚みは等しいことが最も好ましい
が、厚みに差がある場合、厚い方の二軸延伸ポリスチレ
ン系樹脂フィルムの厚みが薄い方の二軸延伸ポリスチレ
ン系樹脂フィルムの厚みの２．４倍を超えない範囲であ
ることが好ましい。厚みの差が大きすぎると、シュリン
ク蓋用成形シート１への成形時にカールして型再現性が
低下しやすくなると共に、熱収縮させたスカート部３が
割れやすくなって、開封性が低下しやすくなる。It is most preferable that the two biaxially stretched polystyrene resin films to be bonded and laminated have the same thickness, but if there is a difference in thickness, the thicker biaxially stretched polystyrene resin film has a smaller thickness. The thickness is preferably not more than 2.4 times the thickness of the biaxially stretched polystyrene resin film. If the difference in thickness is too large, curling occurs during molding into the molded sheet 1 for a shrink lid, and mold reproducibility is easily reduced, and the skirt portion 3 that has been heat-shrinked is easily cracked, and the opening property is easily reduced. Become.
【００３３】２枚の二軸延伸ポリスチレン系樹脂フィル
ムの接着積層は、例えばドライラミネート、ワックスラ
ミネートなどによって行うことができる。接着剤は一般
に使用されているものでよく、また通常と同様に０．５
〜３μｍ程度の厚みで介在させることが好ましい。本発
明で使用する積層シートは、接着層を介して２枚積層し
たものでることから、熱収縮した積層シートの切り裂き
時に加わる衝撃負荷が２枚に分散される結果、単層のシ
ートに比して割れにくく、開封時のタブ４のちぎれを生
じにくくなっていると考えられる。Adhesive lamination of two biaxially oriented polystyrene resin films can be performed, for example, by dry lamination, wax lamination, or the like. The adhesive may be a commonly used one, and may be 0.5 as usual.
It is preferable to interpose with a thickness of about 3 μm. Since the laminated sheet used in the present invention is formed by laminating two sheets via the adhesive layer, the impact load applied when the heat-shrinkable laminated sheet is torn is dispersed into two sheets. It is considered that the tab 4 is hard to be broken and the tab 4 is hardly torn when opened.
【００３４】２枚の二軸延伸ポリスチレン系樹脂フィル
ムを接着積層するに先立って、一方の二軸延伸ポリスチ
レン系樹脂フィルムの接着積層側面に、包装体に必要な
印刷を施しておくことが好ましい。このようにすると、
印刷層が２枚の二軸延伸スチレン系樹脂フィルムに挟ま
って保護され、印刷落ちを防止することができる。Prior to bonding and laminating the two biaxially stretched polystyrene resin films, it is preferable to perform printing necessary for the package on the bonding lamination side of one of the biaxially stretched polystyrene resin films. This way,
The print layer is protected by being sandwiched between two biaxially stretched styrene resin films, thereby preventing print dropout.
【００３５】二軸延伸ポリスチレン系樹脂フィルムを２
枚接着積層した積層シートの弾性率は、２２０〜４５０
ｋｇ／ｍｍ2であることが好ましい。弾性率が小さすぎ
ると、天板部２の剛性が不足して弛みやすく、弾性率が
大きすぎると引き裂き時に大きな力が必要となりやす
い。The biaxially stretched polystyrene resin film was
The elastic modulus of the laminated sheet obtained by bonding and laminating the two
It is preferably kg / mm 2 . If the elastic modulus is too small, the rigidity of the top plate portion 2 is insufficient, and the top plate 2 tends to be loosened. If the elastic modulus is too large, a large force tends to be required at the time of tearing.
【００３６】[0036]
【実施例】まず、実施例及び比較例に先だって、表１に
示されるａ〜ｈの二軸延伸ポリスチレン系樹脂フィルム
（シート）を用意した。EXAMPLES First, prior to Examples and Comparative Examples, biaxially stretched polystyrene resin films (sheets) a to h shown in Table 1 were prepared.
【００３７】表１において、ＰＳはポリスチレン（数平
均分子量３３万）、ＨＩＰＳはハイインパクトポリスチ
レン（ゴム分濃度６重量％、ゴム平均粒子径３μｍ）、
縦方向とはフィルム（シート）製造時の巻き取り方向、
横方向とは縦方向に対する直角方向である。各フィルム
（シート）の延伸はバブル延伸法にて行い、延伸温度を
１０７〜１２８℃の範囲内で調整し、表１に示される延
伸倍率とした。In Table 1, PS is polystyrene (number average molecular weight 330,000), HIPS is high impact polystyrene (rubber concentration 6% by weight, rubber average particle diameter 3 μm),
The longitudinal direction is the winding direction when manufacturing a film (sheet),
The horizontal direction is a direction perpendicular to the vertical direction. Stretching of each film (sheet) was performed by the bubble stretching method, and the stretching temperature was adjusted within the range of 107 to 128 ° C., and the stretching ratios shown in Table 1 were obtained.
【００３８】表１において、ＯＲＳは、ＡＳＴＭ−Ｄ−
１５４０に準拠し、該当フィルム（シート）のビカット
軟化点＋３０℃のシリコーンオイル浴で測定したピーク
応力値である。ビカット軟化点は、ＡＳＴＭ−Ｄ−１５
２５に準拠し、該当樹脂組成物を２００℃で厚み４ｍｍ
のシートとし、加重１ｋｇ、昇温速度２℃／分の条件で
測定した値である。また、収縮率は、１１５℃のシリコ
ーンオイル浴中に１０秒間浸漬させて求めた値である。In Table 1, ORS is ASTM-D-
It is a peak stress value measured in a silicone oil bath at the Vicat softening point of the corresponding film (sheet) + 30 ° C. in accordance with 1540. Vicat softening point is ASTM-D-15
25, the thickness of the corresponding resin composition was 4 mm at 200 ° C.
The values were measured under the conditions of a sheet having a weight of 1 kg and a heating rate of 2 ° C./min. Further, the shrinkage is a value obtained by immersing in a silicone oil bath at 115 ° C. for 10 seconds.
【００３９】実施例１ 表１に示されるフィルムｄとｅを用い、フィルムｄの片
面に単色の格子模様印刷を施した後、この印刷面にフィ
ルムｅを１μｍ厚の接着剤を介在させたドライラミネー
ト法で接着積層し、合計厚み１００μｍのサンプルシー
トとした。Example 1 Using the films d and e shown in Table 1, a single-color lattice pattern was printed on one side of the film d, and then the film e was dried on this printed surface with an adhesive having a thickness of 1 μm. A sample sheet having a total thickness of 100 μm was obtained by bonding and laminating by a lamination method.
【００４０】一方、容器として、鍋焼きうどんセット包
装用のアルミ箔製のフランジ付の容器を用意し、この容
器に合わせて、上記サンプルシートに１３０℃の熱板加
熱を伴う圧空成形と打ち抜き加工を施して、図１に示さ
れるような２箇所のタブとノッチを有するシュリンク蓋
用成形シートを作製すると共に、成形性の評価を行っ
た。また、成形は、印刷を施したフィルムｄ側が蓋の外
面側となるように行った。On the other hand, as a container, a container with a flange made of aluminum foil for packaging a set of pan-fried udon is prepared. In accordance with this container, the sample sheet is subjected to pressure forming with a hot plate heating at 130 ° C. and punching. Then, a molded sheet for a shrink lid having two tabs and notches as shown in FIG. 1 was produced, and the moldability was evaluated. The molding was performed such that the printed film d side was the outer surface side of the lid.
【００４１】上記容器に上記シュリンク蓋用成形シート
を被せ、容器の側方から赤外線ヒータでスカート部を３
秒間加熱して熱収縮させることで、シュリンク蓋付包装
体とすると共に、シュリンク性の評価を行った。The above-mentioned container is covered with the above-mentioned shrink lid forming sheet, and the skirt portion is covered with an infrared heater from the side of the container.
By heating and shrinking by heating for 2 seconds, a package with a shrink lid was obtained, and the shrink property was evaluated.
【００４２】得られたシュリンク蓋付包装体について、
一方のタブを摘んで引っ張り、開封性の評価を行った。About the obtained package body with a shrink lid,
One tab was picked and pulled to evaluate the openability.
【００４３】各評価基準は下記の通りである。The evaluation criteria are as follows.
【００４４】成形性：成形型の形状が再現できているか
否かを、天板部の平面性を中心に目視観察して評価し
た。評価は、天板部が平面で、成形型の形状が十分に再
現されていると認められるものを◎、天板部に若干カー
ルが認められたものを○、天板部に目立つカールが認め
られたものを△とした。Moldability: Whether or not the shape of the mold was reproducible was evaluated by visual observation centering on the flatness of the top plate. In the evaluation, ◎ indicates that the top plate is flat and the shape of the mold is sufficiently reproduced, ○ indicates that the top plate is slightly curled, and 、 indicates that the top plate is notably curled. What was given was marked as △.
【００４５】シュリンク性：スカート部を熱収縮させた
後、得られたシュリンク蓋付包装体のシュリンク部分を
中心に目視観察して評価した。評価は、熱収縮したスカ
ート部がフランジ部の下面側に十分に巻き込まれている
と共に、タブの曲がりや容器の変形のないものを◎、タ
ブにやや曲がりが認められたものを○、タブに目立つ曲
がりが認められたものやスカート部の巻き込みにやや不
足が認められたものを△、熱収縮が不足でスカート部の
巻き込みが不十分であったり、熱収縮が過剰で容器が変
形したものを×とした。Shrinkability: After heat shrinking the skirt portion, evaluation was made by visually observing mainly the shrink portion of the obtained package with a shrink lid. In the evaluation, the heat-shrinked skirt was sufficiently wrapped around the lower surface of the flange, the tab was not bent or the container was not deformed, and the tab was slightly bent. If there is a noticeable bending or a little shortage of skirt wrapping is found, use the skirt with insufficient heat shrinkage or insufficient heat shrinkage or excessive heat shrinkage to deform the container. X.
【００４６】開封性：熱収縮されたスカート部が、容器
のフランジ部の先端部付近に沿って、大きな抵抗感や引
っ掛かりなくスカート部の切り離しが行えた場合を◎、
多少抵抗感や引っ掛かりのあったものを○、途中でタブ
のちぎれを生じたものを△、開封開始直後にタブのちぎ
れを生じたものを×とした。Openability: The case where the heat-shrinked skirt portion can be cut off along the vicinity of the front end of the flange portion of the container without a great sense of resistance or being caught,
○ indicates that there was some resistance or snagging, △ indicates that the tab was torn in the middle, and x indicates that the tab was torn immediately after opening.
【００４７】結果を表２に示す。Table 2 shows the results.
【００４８】実施例２ 表１に示されるフィルムｂとｇを用い、フィルムｂの片
面に印刷を施した他は実施例１と同様にして同様の評価
を行った。Example 2 Using the films b and g shown in Table 1, the same evaluation was performed as in Example 1 except that printing was performed on one side of the film b.
【００４９】結果を表２に示す。Table 2 shows the results.
【００５０】比較例１ 表１に示されるフィルムｈを単独でサンプルシートと
し、その片面に印刷を施し、この印刷面が蓋の外面とな
るように成形した他は実施例１と同様にして同様の評価
を行った。Comparative Example 1 The same procedure as in Example 1 was repeated except that the film h shown in Table 1 was used alone as a sample sheet, one side of which was printed, and the printed surface was formed so as to be the outer surface of the lid. Was evaluated.
【００５１】結果を表２に示す。Table 2 shows the results.
【００５２】比較例２ 表１に示されるフィルムａとｇを用い、フィルムａの片
面に印刷を施した他は実施例１と同様にして同様の評価
を行った。Comparative Example 2 Using the films a and g shown in Table 1, the same evaluation as in Example 1 was performed except that printing was performed on one side of the film a.
【００５３】結果を表２に示す。Table 2 shows the results.
【００５４】比較例３ 表１に示されるフィルムｆを２枚用い、一方のフィルム
ｆの片面に印刷を施した他は実施例１と同様にして同様
の評価を行った。Comparative Example 3 The same evaluation was performed in the same manner as in Example 1 except that two films f shown in Table 1 were used and one side of the film f was printed.
【００５５】結果を表２に示す。Table 2 shows the results.
【００５６】比較例４ 表１に示されるフィルムｃを２枚用い、一方のフィルム
ｃの片面に印刷を施した他は実施例１と同様にして同様
の評価を行った。Comparative Example 4 The same evaluation was performed as in Example 1 except that two films c shown in Table 1 were used and one side of the film c was printed.
【００５７】結果を表２に示す。Table 2 shows the results.
【００５８】比較例５ 表１に示されるフィルムｈを２枚用い、一方のフィルム
ｈの片面に印刷を施した他は実施例１と同様にして同様
の評価を行った。Comparative Example 5 The same evaluation was performed as in Example 1 except that two films h shown in Table 1 were used and one side of the film h was printed.
【００５９】結果を表２に示す。Table 2 shows the results.
【００６０】[0060]
【表１】 [Table 1]
【００６１】[0061]
【表２】 [Table 2]
【００６２】[0062]
【発明の効果】本発明は、以上説明したとおりのもので
あり、本発明のシュリンク蓋用成形シートを用いて得ら
れる本発明のシュリンク蓋付包装体は、容器のフランジ
部の下面側に熱収縮して巻き込まれているスカート部
を、タブを引っ張ることで、フランジ部の先端部付近に
沿って連続的に切り離しながら引き剥がすことができ、
簡単かつ確実にシュリンク蓋を容器から分離することが
できるものである。The present invention is as described above. The package with a shrink lid of the present invention obtained by using the molded sheet for a shrink lid of the present invention has a lower surface side of the flange portion of the container. By pulling the tab, the skirt part that is shrunk and entangled can be peeled off while continuously separating along the vicinity of the tip of the flange part,
The shrink lid can be easily and reliably separated from the container.
【図１】本発明に係るシュリンク蓋用成形シートの一例
を示す斜視図である。FIG. 1 is a perspective view showing an example of a molded sheet for a shrink lid according to the present invention.
【図２】本発明に係るシュリンク蓋用成形シートを容器
上に被せた状態の断面図である。FIG. 2 is a cross-sectional view showing a state in which a molded sheet for a shrink lid according to the present invention is covered on a container.
【図３】図２の状態からスカート部を熱収縮させた状態
の断面図である。FIG. 3 is a cross-sectional view of a state in which the skirt is thermally contracted from the state of FIG. 2;
【図４】本発明に係るシュリンク蓋付包装体の開封機構
を説明するための斜視図である。FIG. 4 is a perspective view for explaining an opening mechanism of the package with a shrink lid according to the present invention.
１ シュリンク蓋用成形シート １′ シュリンク蓋 ２ 天板部 ３ スカート部 ４ タブ ５ ノッチ部 ６ フランジ部 ７ 容器 DESCRIPTION OF SYMBOLS 1 Shrink lid forming sheet 1 'Shrink lid 2 Top plate part 3 Skirt part 4 Tab 5 Notch part 6 Flange part 7 Container
Claims (4)
天板部の周縁から垂下するスカート部を備えたシュリン
ク蓋用成形シートにおいて、厚みが２０〜７５μｍで、
ＯＲＳが縦横共に４〜２５ｋｇ／ｃｍ2の二軸延伸ポリ
スチレン系樹脂フィルムを２枚接着した積層シートで構
成され、スカート部の下縁からタブが延出していると共
に、タブの片側に隣接してスカート部の下縁にノッチ部
を有することを特徴とするシュリンク蓋用成形シート。1. A heat-shrinkable sheet, comprising: a top plate;
In the molded sheet for a shrink lid provided with a skirt portion hanging down from the periphery of the top plate portion, the thickness is 20 to 75 μm,
The ORS is composed of a laminated sheet in which two biaxially stretched polystyrene resin films of 4 to 25 kg / cm 2 in length and width are adhered, and the tab extends from the lower edge of the skirt portion and is adjacent to one side of the tab. A molded sheet for a shrink lid, comprising a notch at a lower edge of a skirt.
に連なり、ノッチ部が、タブの他側縁の基部に、当該ノ
ッチ部が形成されたスカート部の下縁に対してタブ寄り
に斜めに向けて形成されていることを特徴とする請求項
１に記載のシュリンク蓋用成形シート。2. One side edge of the tab is continuous with the lower edge of the skirt portion, and the notch portion is formed at the base of the other side edge of the tab with respect to the lower edge of the skirt portion where the notch portion is formed. The molded sheet for a shrink lid according to claim 1, wherein the molded sheet is formed so as to be inclined obliquely.
レン系樹脂フィルム間に印刷が施されていることを特徴
とする請求項１又は２に記載のシュリンク蓋用成形シー
ト。3. The molded sheet for a shrink lid according to claim 1, wherein printing is performed between the two bonded biaxially stretched polystyrene-based resin films.
ク蓋用成形シートが、開口部周縁にフランジ部を有する
容器に被せられ、スカート部が熱収縮されてフランジ部
の下面側に巻き込まれていることを特徴とするシュリン
ク蓋付包装体。4. The molded sheet for a shrink lid according to claim 1, which is placed on a container having a flange on the periphery of the opening, and the skirt is thermally shrunk and rolled up on the lower surface side of the flange. A package with a shrink lid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000141308A JP4615672B2 (en) | 2000-05-15 | 2000-05-15 | Molded sheet for shrink lid and package with shrink lid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000141308A JP4615672B2 (en) | 2000-05-15 | 2000-05-15 | Molded sheet for shrink lid and package with shrink lid |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001322657A true JP2001322657A (en) | 2001-11-20 |
| JP4615672B2 JP4615672B2 (en) | 2011-01-19 |
Family
ID=18648442
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000141308A Expired - Lifetime JP4615672B2 (en) | 2000-05-15 | 2000-05-15 | Molded sheet for shrink lid and package with shrink lid |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4615672B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002037289A (en) * | 2000-07-28 | 2002-02-06 | Asahi Kasei Corp | Laminate molding sheet for shrink lid and package with the shrink lid |
| JP2006273346A (en) * | 2005-03-28 | 2006-10-12 | Mitsubishi Plastics Ind Ltd | Thermally shrinkable film for container lid material, and container lid material using thermally shrinkable film |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5036757U (en) * | 1973-07-27 | 1975-04-17 | ||
| JPS57162154U (en) * | 1981-04-03 | 1982-10-12 | ||
| JPH0332056U (en) * | 1989-08-09 | 1991-03-28 | ||
| JPH07206042A (en) * | 1994-01-25 | 1995-08-08 | Toyo Echo Kk | Heat shrinkable cover |
| JPH08133280A (en) * | 1994-11-02 | 1996-05-28 | Toyo Echo Kk | Container with shrink cover |
| JPH08230933A (en) * | 1995-03-01 | 1996-09-10 | Asahi Chem Ind Co Ltd | Film for wrapping vegetable, fruit and cut flower |
| JPH08282713A (en) * | 1995-04-19 | 1996-10-29 | Toyo Echo Kk | Shrink cap |
-
2000
- 2000-05-15 JP JP2000141308A patent/JP4615672B2/en not_active Expired - Lifetime
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5036757U (en) * | 1973-07-27 | 1975-04-17 | ||
| JPS57162154U (en) * | 1981-04-03 | 1982-10-12 | ||
| JPH0332056U (en) * | 1989-08-09 | 1991-03-28 | ||
| JPH07206042A (en) * | 1994-01-25 | 1995-08-08 | Toyo Echo Kk | Heat shrinkable cover |
| JPH08133280A (en) * | 1994-11-02 | 1996-05-28 | Toyo Echo Kk | Container with shrink cover |
| JPH08230933A (en) * | 1995-03-01 | 1996-09-10 | Asahi Chem Ind Co Ltd | Film for wrapping vegetable, fruit and cut flower |
| JPH08282713A (en) * | 1995-04-19 | 1996-10-29 | Toyo Echo Kk | Shrink cap |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002037289A (en) * | 2000-07-28 | 2002-02-06 | Asahi Kasei Corp | Laminate molding sheet for shrink lid and package with the shrink lid |
| JP4634583B2 (en) * | 2000-07-28 | 2011-02-16 | 旭化成ケミカルズ株式会社 | Laminated molded sheet for shrink lid and package with shrink lid |
| JP2006273346A (en) * | 2005-03-28 | 2006-10-12 | Mitsubishi Plastics Ind Ltd | Thermally shrinkable film for container lid material, and container lid material using thermally shrinkable film |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4615672B2 (en) | 2011-01-19 |
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