JPS5993605A - Method of sealing cuppy thin vessel - Google Patents
Method of sealing cuppy thin vesselInfo
- Publication number
- JPS5993605A JPS5993605A JP57201123A JP20112382A JPS5993605A JP S5993605 A JPS5993605 A JP S5993605A JP 57201123 A JP57201123 A JP 57201123A JP 20112382 A JP20112382 A JP 20112382A JP S5993605 A JPS5993605 A JP S5993605A
- Authority
- JP
- Japan
- Prior art keywords
- container
- side wall
- thin
- polypropylene
- sealing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Closing Of Containers (AREA)
- Package Closures (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
本発明はコツプ状の継目のない薄肉プラスチック容器の
中に充填物を充填し、本体口部を2重シームアルミ蓋で
密封する方法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for filling a seamless, thin-walled plastic container with a filler and sealing the mouth of the container with a double-seam aluminum lid.
本発明の目的は、従来継目なしのコツプ状薄肉容器の密
封方法として使用されなかった2重シームアルミ蓋を使
用した密封方法を提供することである。An object of the present invention is to provide a sealing method using a double-seamed aluminum lid, which has not been previously used as a sealing method for a seamless pot-shaped thin-walled container.
2重シームアルミ蓋は密封性が良いことに加えて、開は
易さ、開けた後の開口部の奇麗なこと等のため、例えば
ジュー ス缶、水羊軛缶等の金属缶の蓋材として多用さ
れている。また2重シームアルミ蓋は薄肉プラスチック
容器の蓋材として、従来継目のある容器に対しては既に
商用化されているが、継目のない容器に対してはその開
発が遅れていた。その原因は継目のない容器では、深絞
シ容器を成形するに当シ厚いシートを使用しなくてはな
らず、そうすると胴体は薄肉でもフランジ部は厚くなる
ためである。この厚みのため2重シームアルミ蓋が巻締
められない。一方継目のある容器では、薄いシートを筒
状に巻いて胴体を成形するので、深い容器でも胴体と共
にフランジ部も薄く出来、このため2重シームアルミ蓋
を巻締めることができる。しかし継目のある深い容器は
継目部分が他の部分に比べて弱いため、これに関する事
故を皆無にすることができないこと、一般にポlJm化
ビニル樹脂、ポリスチレン樹脂等耐熱性の低い樹脂が主
であるだめ、用途として高温では使えず、熱充填、レト
ルト用途等には適していなかった。本発明者らは耐熱性
良好で継目のないコツプ状プラスチック容器で、2重シ
ームアルミ蓋が巻締められるよう種々検討した結果、本
発明に至った。本発明は深さ対口径の比が少なくとも1
以上でアシ、ポリプロピレン樹脂を主体とする単層又は
多層シートを、該ポリプロピレン樹脂の融点以下の温度
で予熱した後成形し、該容器のフランジ部をシートの元
厚の少なくとも50%以下に鍛造し1.0回以下の厚さ
とし、該容器の側壁上部に対して側壁中間部がやや小さ
い形状のコツプ状の薄肉容器を、予め少なくとも該容器
の側壁上部から中間部にかけての径が変化する付近がぴ
ったりと納まシ、該容器底部が内部で高さ方向の途中に
位置するような凹状の保持工具にびりたシと納め、容器
本体内に内容物を充填して後、2重シームアルミ蓋を被
せ巻締機で巻締めることを特徴とする。Double-seam aluminum lids have good sealing properties, are easy to open, and have a clean opening after opening, so they are used as lids for metal cans such as juice cans and water yoke cans. It is often used as. In addition, double-seam aluminum lids have already been commercialized as lids for thin-walled plastic containers for containers with conventional seams, but their development for seamless containers has lagged behind. The reason for this is that for seamless containers, a thick sheet must be used to form the deep-drawn container, which results in a thin body but a thick flange. Due to this thickness, the double seam aluminum lid cannot be tightened. On the other hand, for containers with seams, the body is formed by rolling a thin sheet into a cylindrical shape, so even in deep containers, the flange can be made thinner as well as the body, which makes it possible to wrap a double-seam aluminum lid tightly. However, in deep containers with seams, the joints are weaker than other parts, so accidents related to this cannot be completely eliminated.In general, resins with low heat resistance such as polyvinyl resin and polystyrene resin are used. No, it could not be used at high temperatures and was not suitable for hot filling or retort applications. The present inventors conducted various studies to create a seamless plastic container with good heat resistance and a double seam aluminum lid, and as a result, they arrived at the present invention. The present invention provides a depth to aperture ratio of at least 1.
In the above, a single layer or multilayer sheet mainly made of polypropylene resin is preheated to a temperature below the melting point of the polypropylene resin, and then molded, and the flange portion of the container is forged to at least 50% or less of the original thickness of the sheet. A pot-shaped thin container having a thickness of 1.0 times or less and having a middle part of the side wall slightly smaller than the upper part of the side wall of the container is prepared in advance so that at least the area where the diameter changes from the upper part of the side wall to the middle part of the container is The bottom of the container fits snugly into the concave holding tool that is located halfway in the height direction, and after filling the container body with the contents, close the double-seam aluminum lid. It is characterized by being covered and tightened using a tightening machine.
以下図面に従って本発明を説明する。第1図は本発明に
使われるプラスチック薄肉容器とこれに2重シームアル
ミ[を巻締める際の工具の関係を示す。(1)および(
1すは本発明に使われる容器、(2)は本発明で使われ
る凹状の保持工具、(3)は2重シームアルミ蓋、(4
)はチャック、(5)はりフタ−1(6)は第1巻締め
ロール、(7)は第2巻締めロールである。The present invention will be explained below with reference to the drawings. FIG. 1 shows the relationship between the thin-walled plastic container used in the present invention and the tools used to wrap double-seam aluminum around it. (1) and (
1 is a container used in the present invention, (2) is a concave holding tool used in the present invention, (3) is a double seam aluminum lid, and (4) is a concave holding tool used in the present invention.
) is a chuck, (5) beam lid 1 (6) is a first tightening roll, and (7) is a second tightening roll.
容器(1)の形状は側壁上部に対して側壁中間部がやや
小さい点に特徴がある。容器(1/lの形状は容器(1
)の形状の特徴の他に、側壁中間部が少なくとも4本以
上の深さ方向の柱状リプと、そのリプによって分割され
る平坦面で構成され、側壁下部は側壁中間部よシ段状に
小さくなっておシ、底部が内側に向って凹状になってい
る点に特徴がある。容器(1)および(わのフランジ部
の厚さは1叫以下である。The shape of the container (1) is characterized in that the middle part of the side wall is slightly smaller than the upper part of the side wall. Container (1/l shape is container (1/l)
), the middle part of the side wall is composed of at least four columnar lips in the depth direction and a flat surface divided by the lips, and the lower part of the side wall is smaller and smaller than the middle part of the side wall. It is distinctive in that the bottom is concave toward the inside. The thickness of the flange portion of the container (1) and the container (1) is 1 mm or less.
1.5列以上の厚いシートから容器(1)および(11
′lのような形状の成形品を得るためには、例えば特開
昭56−118812号公報等に開示した方法で成形す
ることができる。このような方法でフランジ厚をシート
の元厚の少なくとも50チ以下、絶対厚でIB以下にす
るためには、成形時にシート温度を他の性能に影響を及
はさない程度で高めにすることが好ましい。しかしシー
ト温度が高過ぎると透明性、光沢が悪くなシ、シート温
度が低過ぎると成形性が不良になる。Tmをポリプロピ
レンの融点としだ時・ (Tm−10)±3℃位が最も
好ましい。Containers (1) and (11) are made from thick sheets of 1.5 or more rows.
In order to obtain a molded article having a shape like 'l', it is possible to mold it by the method disclosed in, for example, Japanese Patent Application Laid-Open No. 56-118812. In order to keep the flange thickness at least 50 inches below the original thickness of the sheet and below IB in absolute thickness using this method, the sheet temperature must be raised during molding to a level that does not affect other performance. is preferred. However, if the sheet temperature is too high, transparency and gloss will be poor, and if the sheet temperature is too low, moldability will be poor. When Tm is the melting point of polypropylene, it is most preferably about (Tm-10) ±3°C.
上下の環状鍛造型に加えられる鍛造圧力は高い程良く、
少なくとも50 kf/cr71以上の押圧力は必要で
ある。しかし押圧力を上げると成形装置の型締め力が上
シ、装置、金型更に製品のコストに影響する。押圧力を
上けないで7ランジ厚を薄くスるために、例えば上下環
状鍛造型の型温を上げるか、表面を熱良導体でないもの
で強度のある、例えばプラスチックまたはプラスチック
−鉱物質、プラスチック−金属等の複合材料を使用する
ことが好ましい。このようにして得られた形状(1)お
よび(1)の容器を次のように充填、巻締めする。第1
図において、す7ター(5)の上に凹状の保持工具(2
)をのせ、この中に容器をぴったシと納める。次に内容
物を充填する。充填条件としては内容物の温度が常温か
加温(60〜95℃)か、およびヘッドベースの有、無
がある。内容物の温度は色々な場合があるが、大別すれ
ばこの2つである。ヘッドスペースは充填及び開封時内
容物をこぼさない、加熱、冷却、攪拌を能率化すること
等の役割がある。The higher the forging pressure applied to the upper and lower annular forging dies, the better.
A pressing force of at least 50 kf/cr71 is required. However, when the pressing force is increased, the clamping force of the molding equipment affects the upper shell, the equipment, the mold, and the cost of the product. In order to reduce the thickness of the 7-lunge without increasing the pressing force, for example, increase the mold temperature of the upper and lower annular forging dies, or use a material whose surface is not a good thermal conductor and is strong, such as plastic or plastic (mineral material, plastic). Preferably, composite materials such as metals are used. The containers having shapes (1) and (1) thus obtained are filled and sealed as follows. 1st
In the figure, a concave holding tool (2
) and place the container snugly inside. Next, fill the contents. Filling conditions include whether the temperature of the contents is room temperature or heated (60 to 95°C), and whether or not a head base is provided. The temperature of the contents may vary, but they can be broadly classified into these two types. The head space plays the role of not spilling the contents during filling and opening, and making heating, cooling, and stirring more efficient.
次にアルミ蓋(3)を被せ、リフターが上ってアルミ蓋
(3)の凹み部分にチャック(4)が納まる。次に第1
o −# (5)が近付いて、回転しながら一定ストロ
ーク量を進んだ後、後退する。この時チャック(3)及
びリフター(5)、容器(1)又は(f)、保持工具(
2)も回転する。次に第20−ル(7)が第10−ル(
6)と同様に前進後退して巻締めが終了、リフター(5
)が下ってアルミ蓋(3)が巻締められた容器(1)又
は(1′)を取シ出して終了する。第2図は2重シーム
アルミ蓋の2重シーム部の断面である。(a)はアルミ
蓋のみ、(b)はアルミ蓋をコツプ状薄肉容器に被せた
場合、(cl)はフランジ厚が1朋以上の場合の巻締め
後、(C2)は7ランジ厚が17rrjn以下の場合の
巻締め後の断面を示す。第2図において(C1)は2重
シームが完全にできない。これはフランジ厚が厚過ぎて
、巻締めの際フランジの変形が幾伺学的に不可能となる
ためである。これでは容器に圧力がかがった時蓋が外れ
る可能性がある。一方容器の7ランジ厚みが1璽以下の
(C2)の場合は、2重シームが完全である。この場合
はフランジの変形が可能となっておシ、2重シームされ
たため蓋は圧力かかっても外れない。更に圧力をかけて
いくと最終的にはゾルトップ部が外れる。従って巻締め
が良好にされるためにはフランジ厚が11rrIn以下
であることが必要である。Next, cover the aluminum lid (3), and the lifter will go up and the chuck (4) will fit into the recessed part of the aluminum lid (3). Next, the first
o - # (5) approaches, advances a certain stroke amount while rotating, and then retreats. At this time, the chuck (3), lifter (5), container (1) or (f), holding tool (
2) also rotates. Next, the 20th rule (7) is the 10th rule (
Move forward and backward in the same way as in 6) to complete the seaming, and then remove the lifter (5).
) is lowered and the container (1) or (1') with the aluminum lid (3) is taken out. FIG. 2 is a cross section of a double seam portion of a double seam aluminum lid. (a) is only the aluminum lid, (b) is when the aluminum lid is placed on a pot-shaped thin container, (cl) is after seaming when the flange thickness is 1 mm or more, (C2) is when the 7 flange thickness is 17rrjn The cross section after seaming is shown in the following cases. In FIG. 2, (C1) cannot form a complete double seam. This is because the flange thickness is too thick, making it somewhat impossible to deform the flange during seaming. This may cause the lid to come off when pressure builds up in the container. On the other hand, in the case of (C2) where the 7-lunge thickness of the container is less than one loaf, the double seam is complete. In this case, the flange can be deformed, and the lid will not come off even if pressure is applied because of the double seam. If you apply more pressure, the sol top will eventually come off. Therefore, in order to achieve good seaming, the flange thickness must be 11 rrIn or less.
次に巻締めの際、容器(1)又は(わの形状で保持工具
(2)を使わないと巻締め力が容器胴体に直接伝わり、
胴体の変形、主に凹みができてしまう。保持工具(2)
を使うと、巻締め力は容器の側壁上部から中間部にかけ
ての径が変化した部分から保持工具に伝わるので容器の
胴体には変形が生じない。また側壁上部と中間部の径が
同じ場合にも保持工具は役に立たず、巻締め力はやはシ
胴体に伝わシ凹みができてしまう。従って巻締め時容器
が変形しないためには、容器の形状が側壁上部に対して
側壁中間部がやや小さい形状であり、予めこの形状にび
ったシ納まる保持工具を用意してこれに該容器をびった
シと納めてから巻締めることが有効である。Next, when tightening, if the holding tool (2) is not used with the container (1) or (wa) shape, the tightening force will be directly transmitted to the container body.
Deformation of the torso, mainly dents. Holding tool (2)
When using this method, the tightening force is transmitted to the holding tool from the part where the diameter changes from the upper part of the side wall to the middle part of the container, so no deformation occurs in the body of the container. Also, if the diameter of the upper part of the side wall and the middle part are the same, the holding tool is useless, and the tightening force is transmitted to the body and creates a dent. Therefore, in order to prevent the container from deforming during seaming, the shape of the container must be such that the middle part of the side wall is slightly smaller than the upper part of the side wall, and a holding tool that fits this shape must be prepared in advance, and the container must be held in place using this tool. It is effective to put it in place completely and then tighten it.
更に充填条件を検討すると、容器(1)は常温充填の場
合にはヘッドスペースの有無によらず良好である。熱充
填の場合にはヘッドスペース無しの場合のみ良好で、ヘ
ッドスペース有シでは容器胴体部に冷却に伴って凹みが
できる。これはヘッドスペース中の空気及び水蒸気の冷
却による減圧が生じたためである。容器(1っはどの場
合も良好である。Further consideration of the filling conditions reveals that container (1) is good when filled at room temperature regardless of the presence or absence of a head space. In the case of hot filling, only the case without head space is good, and with head space, dents are formed in the container body due to cooling. This is due to the reduction in pressure caused by the cooling of the air and water vapor in the headspace. Container (1 is good in all cases.
熱充填でヘッドスペース有シの場合も発生する減圧を容
器側壁中間部の平坦部が変形することにょシ吸収し、柱
状リブ部は変形しないため凹みは目立たない。更にこれ
らの容器をレトルト処理すると、形状(1)の容器でヘ
ッドスペース無しの場合、底が膨らむ傾向を生じ、目立
させると底周辺が浮いているので不安定になる。ヘッド
スペース有シの場合は熱充填、冷却時の胴体の凹みがそ
のまま残る。一方形状(1ツの容器ではヘッドスペース
の有無によらずレトルト後も変形は生じないが又は目立
たない。これは形状(1つの中で側壁中間部の内の平坦
部が減圧に対して、また間部と底部の凹状部が加圧に対
して可逆クッションの役割を果しているためである。Even in the case of hot filling with a head space, the flat part of the middle part of the side wall of the container deforms to absorb the reduced pressure, and the columnar rib part does not deform, so the dents are not noticeable. Furthermore, when these containers are subjected to retort processing, if the container is of shape (1) and has no head space, the bottom tends to bulge, and if it is noticeable, the bottom periphery will float, making it unstable. If there is a headspace, the dent in the fuselage during heat filling and cooling will remain as is. On the other hand, the shape (in one container, deformation does not occur or is not noticeable after retorting regardless of whether there is a headspace). This is because the concave portions in the space and the bottom function as a reversible cushion against pressurization.
以上のように、良好な巻締めを行うためには、容器7ラ
ンジ厚みが1.0籠以下で該容器の側壁上部に対して側
壁中間部がやや小さい形状で11)、予め少なくとも該
容器の側壁上部から中間部にかけての径が変化する付近
がびったシと納まシ、該容器の底部が工具内部で高さ方
向の途中に位置するような保持工具を用意し、これに該
容器をぴったりと納めて巻締めることが有効である。更
に熱充填、レトルト処理を行う場合、容器の形状として
第1図(1ツが有効である。本発明による深さ対口径比
が少なくとも1以上のコツプ状薄肉ポリプロピレン容器
は融点以下で成形されるため、透明性、剛性に優れ、高
速成形できる。更に特開昭56−118812号公報に
記載の方法によれば、スクラップも少ないので材料コス
トを下げて成形できる。As described above, in order to perform good seaming, the thickness of the flange of the container 7 is 1.0 or less, and the middle part of the side wall is slightly smaller than the upper part of the side wall11). Prepare a holding tool in which the area where the diameter changes from the top of the side wall to the middle part is wide, and the bottom of the container is located midway in the height direction inside the tool, and hold the container in this tool. It is effective to fit it snugly and tighten it. Furthermore, when carrying out hot filling and retort processing, the shape of the container shown in Fig. 1 (1) is effective. Therefore, it has excellent transparency and rigidity, and can be molded at high speed.Furthermore, according to the method described in JP-A-56-118812, there is less scrap, so it can be molded at lower material costs.
以上の結果はポリプロピレン単層の場合の他、例えばポ
リプロピレン/接着層/エチレンビニルアルコール共重
合体/接着層/ポリプロピレンのような多層構成の場合
も同様に適用でき、この場合ガスバリヤ−性が優れる。The above results can be applied not only to a single layer of polypropylene but also to a multilayer structure such as polypropylene/adhesive layer/ethylene vinyl alcohol copolymer/adhesive layer/polypropylene, in which case gas barrier properties are excellent.
このように本発明にょシ継目なしのコツプ状プラスチッ
ク薄肉容器の密封を実施すると、軽量性、易処理性、透
明性、熱充填レトルト処理可能、長期保存可能、易開封
性、開封部の奇麗さ等の長所を備えているので各種食品
用途に利用することができる。In this way, when the seamless plastic thin-walled plastic container of the present invention is sealed, it is lightweight, easy to process, transparent, heat-filling retort processable, long-term storage, easy to open, and clean when opened. Because of these advantages, it can be used for various food applications.
実施例
2調厚ポリプロピレンシート及び2謳厚のポリ−プロピ
レン/接着性ポリプロピレン/エチレンビ眞ルアルコー
ル共重合体/接着性ポリプロピレン/ポリプロピレンシ
ートを用いて形状(1)および(r)の成形品を成形し
た。成形法は特開昭56−118812号公報に記載の
方法に準じた。Example 2 Molding of shapes (1) and (r) using a polypropylene sheet of adjusted thickness and a polypropylene/adhesive polypropylene/ethylene vinyl alcohol copolymer/adhesive polypropylene/polypropylene sheet of 2-thickness did. The molding method was based on the method described in JP-A-56-118812.
成形温度:155±2℃、ブロー圧力=5に針d成形品
サイズ:内径60簡Φ、深さ100閣フランジ厚の調整
は上型移動エアシリンダーに供給されるエアーの圧力を
調整して行った。2重シームアルミ蓋は巻締前の外径6
9Φ全周オープンタイプ、巻締機は矢ロ鉄工所■製ハン
ドシーマ−を使用した。レトルト処理は実験用オートク
レーブを使用した。処理条件は100℃×30分×1晦
個ゲージ圧。Molding temperature: 155±2℃, blow pressure = 5, needle d Molded product size: Inner diameter 60mm, depth 100mm Flange thickness is adjusted by adjusting the pressure of air supplied to the upper mold moving air cylinder. Ta. The double seam aluminum lid has an outer diameter of 6 before seaming.
The 9Φ all-around open type was used, and the seaming machine was a hand seamer made by Yaro Iron Works ■. A laboratory autoclave was used for the retort treatment. Processing conditions were 100°C x 30 minutes x 1 hour gauge pressure.
比較例1.2及び実施例1〜6を第1表に示す。Comparative Examples 1.2 and Examples 1 to 6 are shown in Table 1.
実施例3〜6をレトルト処理した結果を第2表に示す。Table 2 shows the results of retorting Examples 3 to 6.
第2表
いずれもポリプロピレン単層及びポリプロピレン/[5
1ポリフロピレン/工チレンビニルアルコール共重合体
/接着性ポリプロピレン/ポリプロピレン多層シートの
成形品に結果の差は無かりた。Table 2 shows polypropylene single layer and polypropylene/[5
There was no difference in the results between the molded products of 1 polypropylene/ethylene vinyl alcohol copolymer/adhesive polypropylene/polypropylene multilayer sheet.
第1図は本発明に使用するプラスチック薄肉容器とこれ
に2重シームアルミ蓋を巻締める際の工具の関係を示す
。
図中、1及び1′は本発明に使用する容器、2は本発明
に使用する保持工具、3は2重シームアルミ蓋、4はチ
ャック、5はリフター、6は第1巻締めロール、7は第
2巻締めロールである。
第2図は2重シームアルミ蓋の2重シーム部の断面を示
す。
(a)はアルミ蓋のみ、(b)はアルミ蓋をコツプ状薄
肉容、器に被せた状態、(C1)は7ランジ厚が1■以
−ヒの場合の巻締め後の断面、(C2)は7ランジ厚が
1mm以下の場合の巻締め後の断面である。
特許出願人 住友ベークライト株式会社第1図
(イ) (ハ)第2
図
(a) (b)
(c+)
(C2)FIG. 1 shows the relationship between a thin-walled plastic container used in the present invention and a tool used to tighten a double-seam aluminum lid onto the container. In the figure, 1 and 1' are containers used in the present invention, 2 is a holding tool used in the present invention, 3 is a double seam aluminum lid, 4 is a chuck, 5 is a lifter, 6 is a first tightening roll, and 7 is the second tightening roll. FIG. 2 shows a cross section of a double seam portion of a double seam aluminum lid. (a) shows only the aluminum lid, (b) shows the state where the aluminum lid is placed over the cup-shaped thin-walled container, (C1) shows the cross section after tightening when the 7-lunge thickness is 1 inch or more, (C2 ) is the cross section after seaming when the thickness of the 7 langes is 1 mm or less. Patent applicant Sumitomo Bakelite Co., Ltd. Figure 1 (A) (C) 2
Figure (a) (b) (c+) (C2)
Claims (3)
し、本体口部を2重シームアルミ蓋を密封する方法にお
いて、深さ対口径の比が少なくとも1以上でsb、ポリ
プロピレン樹脂を主体とする単層または多層シートから
該ポリプロピレン樹脂の融点以下の温度で予熱した後成
形し、該容器のフランジ部がシートの元厚の少なくとも
50q6以下に鍛造され1.0 M以下の厚さであり、
該容器の側壁上部に対して側壁中間部かや\小さい形状
のコツプ状の薄肉容器を、予め少なくとも該容器の側壁
上部から中間部にかけての径が変化する付近がびったシ
と納まり、該容器底部が内部で高さ方向の途中に位置す
るような凹状の保持工具にびったシと納め、容器本体内
に内容物を充填して2重シームアルミ蓋を被せ、巻締機
で巻締めることを特徴とするコツプ状薄肉容器の密封方
法。(1) A method in which contents are filled in a pot-shaped thin-walled plastic container and the mouth of the main body is sealed with a double-seam aluminum lid, the depth-to-aperture ratio is at least 1 and the main material is sb, polypropylene resin. A single-layer or multi-layer sheet is preheated and formed at a temperature below the melting point of the polypropylene resin, and the flange part of the container is forged to at least 50q6 or less of the original thickness of the sheet and has a thickness of 1.0 M or less,
A cup-shaped thin-walled container having a smaller shape than the upper part of the side wall of the container is fitted in advance so that at least the area where the diameter changes from the upper part of the side wall to the middle part of the container is widened. Place the container in a concave holding tool with the bottom part located halfway in the height direction, fill the container body with the contents, cover with a double seam aluminum lid, and tighten with a seaming machine. A method for sealing a thin-walled container characterized by the following.
ビニルアルコール共重合体/接ル層/ポリプロピレンで
構成される特許請求範囲第(1)項記載のコツプ状薄肉
容器の密封方法。(2) A method for sealing a thin-walled container according to claim (1), wherein the multilayer sheet is composed of polypropylene/adhesive layer/ethylene vinyl alcohol copolymer/adhesive layer/polypropylene.
深さ方向のリブとリブで分割される平坦面とで構成され
る側壁中間部及び側壁中間部よシ段状に小さくなってお
シ1.底部が内側に向って凹状に表っている形状の側壁
下部を有する特許請求範囲第(1)項記載のコツプ状薄
肉容器の密封方法。(3) The cup-shaped thin container is 1. The middle part of the side wall is composed of at least four or more ribs in the depth direction and a flat surface divided by the ribs, and the middle part of the side wall becomes smaller in steps. A method for sealing a pot-shaped thin-walled container according to claim (1), which has a lower side wall having a bottom portion concavely facing inward.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP57201123A JPS5993605A (en) | 1982-11-18 | 1982-11-18 | Method of sealing cuppy thin vessel |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP57201123A JPS5993605A (en) | 1982-11-18 | 1982-11-18 | Method of sealing cuppy thin vessel |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5993605A true JPS5993605A (en) | 1984-05-30 |
Family
ID=16435787
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP57201123A Pending JPS5993605A (en) | 1982-11-18 | 1982-11-18 | Method of sealing cuppy thin vessel |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5993605A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02109806A (en) * | 1988-10-17 | 1990-04-23 | Toppan Printing Co Ltd | Sealing method for container |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56118812A (en) * | 1980-02-27 | 1981-09-18 | Sumitomo Bakelite Co Ltd | Manufacture of hollow container with thin material |
-
1982
- 1982-11-18 JP JP57201123A patent/JPS5993605A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56118812A (en) * | 1980-02-27 | 1981-09-18 | Sumitomo Bakelite Co Ltd | Manufacture of hollow container with thin material |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02109806A (en) * | 1988-10-17 | 1990-04-23 | Toppan Printing Co Ltd | Sealing method for container |
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