JPH0558392B2 - - Google Patents
Info
- Publication number
- JPH0558392B2 JPH0558392B2 JP63216227A JP21622788A JPH0558392B2 JP H0558392 B2 JPH0558392 B2 JP H0558392B2 JP 63216227 A JP63216227 A JP 63216227A JP 21622788 A JP21622788 A JP 21622788A JP H0558392 B2 JPH0558392 B2 JP H0558392B2
- Authority
- JP
- Japan
- Prior art keywords
- layer
- sealing
- seal
- container
- resin
- 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.)
- Expired - Fee Related
Links
- 238000007789 sealing Methods 0.000 claims description 64
- 229920005989 resin Polymers 0.000 claims description 27
- 239000011347 resin Substances 0.000 claims description 27
- 238000000034 method Methods 0.000 claims description 13
- 238000003475 lamination Methods 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 239000010410 layer Substances 0.000 description 71
- 239000000463 material Substances 0.000 description 20
- 239000004743 Polypropylene Substances 0.000 description 5
- -1 polyethylene Polymers 0.000 description 5
- 229920001155 polypropylene Polymers 0.000 description 5
- 230000002093 peripheral effect Effects 0.000 description 4
- 229920001903 high density polyethylene Polymers 0.000 description 3
- 239000004700 high-density polyethylene Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 239000012790 adhesive layer Substances 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 229920001328 Polyvinylidene chloride Polymers 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000005038 ethylene vinyl acetate Substances 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920013716 polyethylene resin Polymers 0.000 description 1
- 229920005673 polypropylene based resin Polymers 0.000 description 1
- 239000005033 polyvinylidene chloride Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
Landscapes
- Packages (AREA)
- Laminated Bodies (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本考案はフランジ部を有するプラスチツク製カ
ツプ体と蓋材とからなる容器において、容易に開
封することのできる密封容器およびその製造方法
に関するものである。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a sealed container that can be easily opened and a method for manufacturing the same, which is made of a plastic cup body having a flange portion and a lid material. be.
従来から行なわれているプラスチツク製密封容
器のイージオープン方法で最も一般的なものは、
蓋材のシール層の材質を様々な樹脂の配合物にす
ることによつて、容器とのシール強度を適度に
（例えば600〜1000g／15mm）制御し、蓋材と容器
の界面をピールして開封するものである。
The most common conventional easy-opening method for sealed plastic containers is
By making the material of the sealing layer of the lid material a compound of various resins, the sealing strength with the container can be controlled to an appropriate level (e.g. 600 to 1000g/15mm), and the interface between the lid material and the container can be peeled off. It must be opened.
ところがシール強度はシール条件、環境温度、
内容物の付着等の影響を受け易く、上下にバラツ
キが生じる。下方にバラツキが生じると、時には
シール漏れの事故になる危険性を有している。逆
に上方にバラツキが生じると、ピール性が悪くな
り、容易に開封することができなくりる。シール
漏れは致命的な欠陥であるため、シール温度や圧
力を高目に設定する等で、上方にバラツキを持た
せているのが一般的である。そのため全般に開封
が困難であつた。 However, seal strength depends on seal conditions, environmental temperature,
It is easily affected by the adhesion of contents, etc., and variations occur vertically. If there is any variation in the downward direction, there is a risk that seal leakage may occur. On the other hand, if there is variation in the upper part, the peelability will be poor and it will not be possible to open the package easily. Seal leakage is a fatal defect, so it is common to create upward variation by setting the seal temperature and pressure to a high level. Therefore, it was generally difficult to open the package.
また、この困難さを克服する為に、シール層と
その隣接する層とのデラミネーシヨンによる開封
する方法もしられている（例えば特公昭50−
37598号公報）が、通常のシールではシール層が
うまく破断せず、内容物を取出しにくいというこ
とが生じるという欠点があつた。 Additionally, in order to overcome this difficulty, a method of opening the seal layer and its adjacent layer by delamination has been used (for example,
37598), however, the conventional seal had the drawback that the seal layer did not break properly, making it difficult to remove the contents.
また、上記欠点を解消する方法として、特開昭
62−251363等でフランジ部に切り込みを入れ、剥
離層を隣接層と切り離しを容易にした例が知られ
ている。しかし、この方法では、切り込み部の容
器周縁部の外側をシールすることが必要であり、
シールをする際のシール盤の位置精度が厳しく、
切り込みの内側をシールすると、うまく隣接層と
の分離ができず、内容物がうまくとりだせないと
いう欠点があつた。 In addition, as a method to eliminate the above drawbacks,
62-251363 or the like is known in which a cut is made in the flange part to facilitate separation of the release layer from the adjacent layer. However, with this method, it is necessary to seal the outside of the container periphery at the notch.
The positioning accuracy of the seal disc when sealing is strict,
When the inside of the incision was sealed, there was a drawback that it was difficult to separate the layer from the adjacent layer, making it difficult to remove the contents.
さらに、本体容器シール層のシール層を剥離す
る方法においては、フランジ部の周縁端部までシ
ールを行い、周縁端部より剥離を開始する必要が
あり、容器形状に制約があつた。 Furthermore, in the method of peeling off the sealing layer of the main container sealing layer, it is necessary to seal up to the peripheral edge of the flange portion and then start peeling from the peripheral edge, which imposes restrictions on the shape of the container.
さらに、この点を解決せんとして、特開昭63−
96060のごとくフランジ部に剥離開始用切りかき
と剥離停止用切りかきの２つの切りかきを設計し
た例もあるが、この場合もシール盤のシール時の
位置精度を厳密にしなければならないという欠点
があつた。 Furthermore, in order to solve this problem,
There are some examples, such as 96060, where the flange is designed with two notches, one for starting peeling and the other for stopping peeling, but this also has the disadvantage that the positional accuracy of the seal plate must be very precise when sealing. It was hot.
本発明は、従来シール漏れに対する安全性と、
イージオープン性の両立が困難であつたプラスチ
ツク製密封容器のヒートシールにおいて、シール
漏れの危険が無く、しかもシール条件に左右され
ずに、安定したイージオープン性が得られる容器
を得んとして研究した結果、容器本体のフランジ
部のシール層の厚みと、そのシール層と隣接する
隣接層のラミネート強度、および、蓋材、容器本
体のシール層、隣接層、構成樹脂を適当設定し、
容器と蓋との加熱シールにおいてフランジのシー
ル部部分シール圧力、温度およびシール盤形状を
適当に、変化させることにより達成できるとの知
見を得、更にこの知見に基づき種々研究を進めて
本発明を完成するに至つたものである。
The present invention improves safety against conventional seal leakage;
In the heat sealing of sealed plastic containers, where it has been difficult to achieve both easy-open properties, we conducted research in an attempt to create a container that has stable easy-open properties without the risk of seal leakage and is not affected by sealing conditions. As a result, the thickness of the sealing layer at the flange of the container body, the lamination strength of the adjacent layer adjacent to the sealing layer, the lid material, the sealing layer of the container body, the adjacent layer, and the constituent resin were appropriately set.
We have found that heat sealing between a container and a lid can be achieved by appropriately changing the sealing pressure, temperature, and shape of the seal plate in the seal portion of the flange.Based on this knowledge, we have conducted various studies and developed the present invention. It has come to completion.
本発明はシール層と該シール層と隣接する隣接
層とを少なくとも有し、該シール層と該隣接層と
のラミネート強度が300〜2000g／25mmである多
層シールから形成したフランジ部のシール層の厚
みが10〜70μである容器本体のフランジ部と蓋と
をシールする方法において、シール部と非シール
部の両側の境界面に、該シール層構成樹脂と該隣
接層構成樹脂の一部とを、シール盤により外側に
押し出し、樹脂溜りを形成するようにシールを行
い、かつ該シール強度が容器本体のシール層と隣
接層とのラミネート強度より大きくなるようにシ
ールすることを特徴とする密封容器の製造方法で
ある。
The present invention provides a sealing layer for a flange portion formed from a multilayer seal having at least a sealing layer and an adjacent layer adjacent to the sealing layer, the lamination strength of the sealing layer and the adjacent layer being 300 to 2000 g/25 mm. In a method for sealing a lid and a flange portion of a container body having a thickness of 10 to 70μ, a portion of the resin constituting the sealing layer and the resin constituting the adjacent layer is applied to the boundary surfaces on both sides of the sealed portion and the non-sealed portion. A sealed container, characterized in that the container is sealed so as to be extruded outward by a seal disc to form a resin reservoir, and the sealing strength is greater than the lamination strength of the sealing layer of the container body and the adjacent layer. This is a manufacturing method.
本発明において使用される容器本体の材料の多
層シール（フイルムも含む）はシール層の厚みが
10〜70μであり、かつ該シール層と隣接する隣接
層とのラミ強度が180°剥離、剥離速度200mm／
minで測定した値が300〜2000g／25mmの範囲のも
のである。シール部との両側の境界面に本体容器
のシール層構成樹脂と隣接層樹脂の一部をシール
盤により押し切り樹脂溜りを形成することが必要
である。例えばシール層にポリエチレン系樹脂、
隣接層にポリプロピレン系樹脂の単なる２層シー
ルでよいし、シール層にポリエチレン、隣接層に
ポリプロピレン更に接着層を介してエチレン酢酸
ビニル共重合体けん化物又はポリ塩化ビニリデン
系樹脂のバリア層、接着層及び最外層にポリプロ
ピレンの６層のシートでもよいし、その他上記条
件を満たすものであればどんな熱可塑性樹脂を用
いて２層以上の多層シールであればよい。 The multilayer seal (including film) of the material of the container body used in the present invention has a thickness of the seal layer.
10 to 70 μ, and the lamination strength between the seal layer and the adjacent layer is 180° peeling, and the peeling speed is 200 mm/
The value measured at min is in the range of 300 to 2000g/25mm. It is necessary to use a seal disk to press out a portion of the resin constituting the seal layer of the main container and a portion of the adjacent layer resin to form a resin reservoir on both sides of the interface with the seal portion. For example, polyethylene resin for the seal layer,
A simple two-layer seal of polypropylene-based resin may be used as the adjacent layer, or a sealing layer of polyethylene, an adjacent layer of polypropylene, and a barrier layer or adhesive layer of saponified ethylene-vinyl acetate copolymer or polyvinylidene chloride-based resin via an adhesive layer. The outermost layer may be a six-layer sheet of polypropylene, or any other thermoplastic resin that satisfies the above conditions may be used to form a multilayer seal with two or more layers.
又場合によつては多層プラスチツクシートの外
層の外側に金属、紙等の他の材料を積層すること
も可能である。ラミ強度が300g／25mm以下では
容器としての密封性がそこなわれるし、2000g／
25mm以上では容器を開封する場合ピール強度が大
きくなりイービーピール性が失われる。さらにシ
ール時にシール部の両側に請求の範囲記述の樹脂
だまりが生じないと、剥離層の破断が十分に行え
ず、開封が容易に行えない。 In some cases, it is also possible to laminate other materials such as metal, paper, etc. on the outside of the outer layer of the multilayer plastic sheet. If the laminated strength is less than 300g/25mm, the sealing performance as a container will be impaired;
If it is 25 mm or more, the peel strength will increase when the container is opened, and the easy peelability will be lost. Furthermore, if the resin pool described in the claims does not occur on both sides of the sealed portion during sealing, the release layer cannot be sufficiently broken and the seal cannot be opened easily.
又本発明において使用される蓋材のフイルム
は、容器本体のシール層とシールしやすくシール
強度が高くなる材質を蓋材のシール層とすること
が望ましく、容器本体のシール層と蓋材のシール
層と材質は同じものがより好ましい。又蓋材のフ
イルムの構成は単層でもよいが、バリア性の良い
アルミ箔、ポリプロピレン等を含む多層フイルム
でもよい。 In addition, it is preferable that the film for the lid used in the present invention is made of a material that easily seals with the seal layer of the container body and has a high sealing strength. It is more preferable that the layers and materials are the same. Further, the structure of the film of the lid material may be a single layer, but it may also be a multilayer film containing aluminum foil, polypropylene, etc. with good barrier properties.
さらに、本発明において使用されるシール盤
は、凸型のシール部をもつており、シール部と非
シール部の境界面の両側に、本体シール層構成樹
脂を本体隣接層構成樹脂の一部とを、押し出し樹
脂だまりを形成するようにシールできるものであ
ればどのような形状のものでもよく、例えばＶ
字、Ｕ字型の凸型を用いることができる。好まし
くはシール盤の巾は１mm以上３mm以下がよく、市
販のシール装置のシール圧力を考慮すると、１mm
以下では、高すぎるシール圧力の為、本体シール
層の切断が生じ４mmより大きくなると低すぎるシ
ール圧力の為、望むところの樹脂溜りが生じずシ
ールおよび剥離層が好適に行えない。 Further, the seal disc used in the present invention has a convex seal portion, and the resin constituting the main body seal layer is connected to a part of the resin constituting the layer adjacent to the main body on both sides of the interface between the sealed portion and the non-sealed portion. may be of any shape as long as it can be sealed to form an extruded resin pool, for example V
A convex shape such as a U-shape or a U-shape can be used. Preferably, the width of the seal disc is 1 mm or more and 3 mm or less, and considering the sealing pressure of commercially available sealing devices, the width of the seal plate is preferably 1 mm or more and 3 mm or less.
If the sealing pressure is too high, the main body sealing layer may be cut, and if the sealing pressure exceeds 4 mm, the sealing pressure is too low, so that the desired resin pool cannot be formed and sealing and peeling layer cannot be performed properly.
以下、作用を図により説明する。 The operation will be explained below using figures.
第１図は本発明の密封容器のシール方法の概略
図を示す。容器１に蓋材２をヒート凸型部４をも
つたシール盤５でシールして得られる。３はフラ
ンジを示す。 FIG. 1 shows a schematic diagram of a method for sealing a sealed container according to the present invention. It is obtained by sealing a lid material 2 to a container 1 with a sealing disk 5 having a heat convex portion 4. 3 indicates a flange.
第２図のような容器本体１と蓋２の材料のフイ
ルムとを各々のシール層７とシール層８とを相接
して配置させ、加熱されたシール盤５にてフラン
ジ部２を加圧シールして密封容器が得られる。 Films of the material of the container body 1 and the lid 2 as shown in FIG. Seal to obtain a hermetically sealed container.
この時、フランジ部３では、凸型部４をもつた
シール盤５で加圧加熱シールされる為、シール部
と非シール部の境界面の両側に、本体シール層７
と本体隣接層９の一部とを押し出し、樹脂溜りを
形成する。このシール部分の拡大図が第３図であ
り、蓋材を周縁端部より開封したときの図が第４
図である。シール部を観察すると、凸状シール盤
により加熱加圧シールされた為、シール部の両端
に、蓋材および本体のシール層の樹脂溜り１２，
１３と本体隣接層の樹脂溜り１０，１１が生じ
る。 At this time, the flange portion 3 is sealed by pressure and heat with the seal plate 5 having the convex portion 4, so that the main body seal layer 7 is applied on both sides of the interface between the sealed portion and the non-sealed portion.
and a part of the main body adjacent layer 9 are extruded to form a resin reservoir. Figure 3 is an enlarged view of this seal, and Figure 4 is a view when the lid is opened from the peripheral edge.
It is a diagram. Observing the seal part, it was found that since it was sealed under heat and pressure by the convex seal disc, there were resin pockets 12 of the lid material and the seal layer of the main body at both ends of the seal part.
13 and resin pools 10 and 11 are formed in the layer adjacent to the main body.
シール部では蓋材、および本体は強いシールの
為完全にシールされており７，８の境界面は混在
状態にある。 In the sealing part, the lid material and the main body are completely sealed due to the strong seal, and the interface between 7 and 8 is in a mixed state.
開封時は蓋材が容器内側に引つ張られ第５図に
示すような力Ｘ→がかかる。 When the container is opened, the lid material is pulled toward the inside of the container, and a force X→ as shown in FIG. 5 is applied.
開封の機構としては第３図のシール地点Ａの部
分の地点で本体シール層５が切断され、本体隣接
層と本体シール層の間の剥離が開始し、シール地
点Ｂの地点で上述の剥離が終了し、本体隣接層と
本体シール層の切断が再び生じ、蓋材と本体の分
離が生じる。 As for the opening mechanism, the main body seal layer 5 is cut at the seal point A in FIG. Then, the main body adjacent layer and the main body sealing layer are cut again, and the lid material and the main body are separated.
本発明の機構の最も重要な点はシール部両端の
隣接層の樹脂溜り１１，１０と、開封時の力Ｘに
ある。 The most important points of the mechanism of the present invention are the resin reservoirs 11 and 10 in the adjacent layers at both ends of the seal and the force X at the time of opening.
周縁部外側のＡの部分では、樹脂溜り１０が本
体シール層を押さえ、この押さえ効果とＸの方向
で、本体シール層７の切断がまず生じ、その後本
体シール層７と本体隣接層９との界面で剥離が生
じる。 At the part A outside the peripheral edge, the resin reservoir 10 presses the main body sealing layer, and due to this pressing effect and the direction of X, the main body sealing layer 7 first breaks, and then the main body sealing layer 7 and the main body adjacent layer 9 Peeling occurs at the interface.
この剥離は内側の樹脂溜り１１までつづき、Ｂ
点では開封時の力Ｘはその樹脂溜りの方向とＸの
方向から、７と９の界面を剥離させる力としては
はたらかず、シール層７を切断する力としてのみ
生じ、本体のシール層と隣接層９との剥離は終了
し、本体シール層と蓋体シール層は剥離し、開封
される。 This peeling continues to the inner resin pool 11, and B
At point, the force X when opening the seal does not act as a force to separate the interface between 7 and 9 from the direction of the resin pool and the direction of After the separation from the adjacent layer 9 is completed, the main body sealing layer and the lid sealing layer are separated and the seal is opened.
この時、樹脂溜りの形成が不十分だと、開封開
始、終了がスムーズに行えず、開封不良の原因と
なる。 At this time, if the resin pool is insufficiently formed, opening and closing cannot be performed smoothly, leading to failure in opening.
実施例
Total厚み850μで、シール層の材質が密度＝
0.955、メルトインデツクス（MI）＝5g／10分の
高密度ポリエチレン（HDPE）、隣接層（外層を
兼ねる）は、MI＝0.5／10分のポリプロピレン
（PP）からなる２層シールを共押出しにて作成し
た。次にこのシールを真空成形し、内径70〓mm、
フランジ外径82〓mm、高さ30mmの容器本体を得
た。この容器本体のフランジ厚みは800μで、シ
ール層５の厚みを20μにした。Example: The total thickness is 850μ, and the material of the sealing layer has a density =
Co-extruded two-layer seal consisting of high density polyethylene (HDPE) with a melt index (MI) of 0.955 and a melt index (MI) of 5 g/10 min; the adjacent layer (also serving as the outer layer) is polypropylene (PP) with an MI of 0.5/10 min. Created by Next, this seal was vacuum formed, with an inner diameter of 70〓mm,
A container body with a flange outer diameter of 82 mm and a height of 30 mm was obtained. The flange thickness of this container body was 800μ, and the thickness of the seal layer 5 was 20μ.
第１図に示した凸型部をもつシール盤５を用い
て、ONY25μ／HDPE60μからなる蓋材をヒート
シールした。比較例として従来の均一なシール圧
力がかる平板のシール盤を使用したものを利用し
た。 A lid material made of ONY 25μ/HDPE 60μ was heat-sealed using a sealing disk 5 having a convex portion shown in FIG. As a comparative example, we used a conventional flat plate seal disc that applies uniform sealing pressure.
本発明のような凸状部を有するシール盤を利用
したシール方法では容易にピールでき、内容物を
とりだせたが、従来のシール盤を使用するとシー
ル層が切断できず、内容物がとりだせない場合が
あつた。 With the sealing method using a sealing disc with a convex part like the present invention, it was easy to peel and the contents could be taken out, but when a conventional sealing disc was used, the sealing layer could not be cut and the contents could not be taken out. There were cases where there was none.
従来のイージオープン方法はシールの安全性と
イージオープン性が、相反していたため、両立す
ることが困難であつた。本発明の密封容器は、シ
ールを行なう界面と、ピールを行なう界面を別々
にすることによつて、シール強度に左右されるこ
となくピールすることができる。従つてシールの
安全性に重点をおいたシールを行なえるため、シ
ール漏れの解消に有効である。しかも容易にピー
ルできる。 In the conventional easy-opening method, seal safety and easy-opening properties were contradictory, and it was difficult to achieve both. The sealed container of the present invention can be peeled without being affected by seal strength by separating the interface for sealing and the interface for peeling. Therefore, sealing can be performed with emphasis on seal safety, which is effective in eliminating seal leakage. Moreover, it can be easily peeled.
又、従来タイプでは、特殊なシール層を有する
蓋材を必要としたが、このシール方法をとると、
不必要になり、コスト的にも有利になる。 In addition, the conventional type required a lid material with a special sealing layer, but with this sealing method,
This becomes unnecessary and is advantageous in terms of cost.
また、機械的にも、シール盤の取り替えだけで
可能となり大巾な機械改造が不必要であり効果は
大きい。さらに、成形、充填、シールが一体とな
つた、容器成形装置への応用も可能であり、その
応用範囲は広い。 Also, mechanically, it is possible to do this simply by replacing the seal plate, eliminating the need for major machine modifications, which is highly effective. Furthermore, the present invention can be applied to a container molding device that integrates molding, filling, and sealing, and has a wide range of applications.
第１図は本発明の密封容器のシール方法を示す
断面図、第２図は第１図のおけるシール部の拡大
断面図、第３図は第２図におけるシール部を更に
拡大したシールの層の状態を示す断面図、第４図
はシール部より蓋材を開封したときのシールの層
の状態を示す断面図、第５図はシール部の開封に
要する力の方向を示す断面図及び第６図は本発明
に使用するシール盤の凸形部の形状を示す断面図
である。
FIG. 1 is a sectional view showing the method of sealing a sealed container of the present invention, FIG. 2 is an enlarged sectional view of the seal portion in FIG. 1, and FIG. 3 is a further enlarged seal layer of the seal portion in FIG. 2. 4 is a sectional view showing the state of the seal layer when the lid material is unsealed from the seal part. FIG. 5 is a sectional view showing the direction of the force required to open the seal part. FIG. 6 is a sectional view showing the shape of the convex portion of the seal disc used in the present invention.
Claims (1)
少なくとも有し、該シール層と該隣接層とのラミ
ネート強度が300〜2000g／25mmである多層シー
ルから形成したフランジ部のシール層の厚みが10
〜70μである容器本体のフランジ部と蓋とをシー
ルする方法において、シール部と非シール部の境
界面の両側に該シール層構成樹脂と該隣接層構成
樹脂の一部とを、凸型のシール盤により外側に押
し出し、樹脂溜りを形成するようにシールを行
い、かつ該シール強度が容器本体のシール層と隣
接層とのラミネート強度より大きくなるようにシ
ールすることを特徴とする密封容器の製造方法。1 The thickness of the sealing layer of the flange portion formed from a multilayer seal having at least a sealing layer and an adjacent layer adjacent to the sealing layer, the lamination strength of the sealing layer and the adjacent layer being 300 to 2000 g / 25 mm. Ten
In a method of sealing the flange portion of the container body and the lid, which have a thickness of ~70μ, a convex-shaped resin is placed on both sides of the interface between the sealed portion and the non-sealed portion with the resin constituting the sealing layer and a portion of the resin constituting the adjacent layer. A sealed container characterized in that the sealing is performed by extruding resin outwardly by a seal disc to form a resin reservoir, and the sealing strength is greater than the lamination strength of the sealing layer of the container body and the adjacent layer. Production method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63216227A JPH0267125A (en) | 1988-09-01 | 1988-09-01 | Preparation of hermetically sealed container |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63216227A JPH0267125A (en) | 1988-09-01 | 1988-09-01 | Preparation of hermetically sealed container |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0267125A JPH0267125A (en) | 1990-03-07 |
| JPH0558392B2 true JPH0558392B2 (en) | 1993-08-26 |
Family
ID=16685272
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63216227A Granted JPH0267125A (en) | 1988-09-01 | 1988-09-01 | Preparation of hermetically sealed container |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0267125A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5182074A (en) * | 1990-07-31 | 1993-01-26 | Nkk Corporation | Apparatus for continuously cooling metal strip |
| JP4443277B2 (en) * | 2004-03-25 | 2010-03-31 | ベスパック株式会社 | Easy-open multilayer container |
| JP4610357B2 (en) * | 2005-01-31 | 2011-01-12 | 出光ユニテック株式会社 | Manufacturing method of easily openable container |
| JP5001962B2 (en) * | 2009-02-16 | 2012-08-15 | 出光ユニテック株式会社 | Easy-open container, easy-open container manufacturing method, and easy-open container manufacturing apparatus |
-
1988
- 1988-09-01 JP JP63216227A patent/JPH0267125A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0267125A (en) | 1990-03-07 |
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| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |