JPS61244703A - 密封包装体及びその製造方法 - Google Patents

密封包装体及びその製造方法

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Publication number
JPS61244703A
JPS61244703A JP60078696A JP7869685A JPS61244703A JP S61244703 A JPS61244703 A JP S61244703A JP 60078696 A JP60078696 A JP 60078696A JP 7869685 A JP7869685 A JP 7869685A JP S61244703 A JPS61244703 A JP S61244703A
Authority
JP
Japan
Prior art keywords
sealed
package
heat
hot plate
inner edge
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
JP60078696A
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English (en)
Other versions
JP2505733B2 (ja
Inventor
朋伸 関口
文昭 永瀬
重松　英世
昭一 牧本
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.)
Toyo Aluminum KK
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Toyo Aluminum KK
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Priority to JP7869685A priority Critical patent/JP2505733B2/ja
Publication of JPS61244703A publication Critical patent/JPS61244703A/ja
Application granted granted Critical
Publication of JP2505733B2 publication Critical patent/JP2505733B2/ja
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C59/00—Surface shaping of articles, e.g. embossing; Apparatus therefor
    • B29C59/007—Forming single grooves or ribs, e.g. tear lines, weak spots
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/76—Making non-permanent or releasable joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/13—Single flanged joints; Fin-type joints; Single hem joints; Edge joints; Interpenetrating fingered joints; Other specific particular designs of joint cross-sections not provided for in groups B29C66/11 - B29C66/12
    • B29C66/131—Single flanged joints, i.e. one of the parts to be joined being rigid and flanged in the joint area
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/20—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines
    • B29C66/24—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight
    • B29C66/242—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight said joint lines being closed, i.e. forming closed contours
    • B29C66/2424—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight said joint lines being closed, i.e. forming closed contours being a closed polygonal chain
    • B29C66/24243—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight said joint lines being closed, i.e. forming closed contours being a closed polygonal chain forming a quadrilateral
    • B29C66/24244—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight said joint lines being closed, i.e. forming closed contours being a closed polygonal chain forming a quadrilateral forming a rectangle
    • B29C66/24245—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight said joint lines being closed, i.e. forming closed contours being a closed polygonal chain forming a quadrilateral forming a rectangle forming a square
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/53—Joining single elements to tubular articles, hollow articles or bars
    • B29C66/534—Joining single elements to open ends of tubular or hollow articles or to the ends of bars
    • B29C66/5346—Joining single elements to open ends of tubular or hollow articles or to the ends of bars said single elements being substantially flat
    • B29C66/53461—Joining single elements to open ends of tubular or hollow articles or to the ends of bars said single elements being substantially flat joining substantially flat covers and/or substantially flat bottoms to open ends of container bodies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
    • B29C66/723—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81427—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined comprising a single ridge, e.g. for making a weakening line; comprising a single tooth
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/832—Reciprocating joining or pressing tools
    • B29C66/8322—Joining or pressing tools reciprocating along one axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81411—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat
    • B29C66/81415—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being bevelled
    • B29C66/81419—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being bevelled and flat
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81411—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat
    • B29C66/81421—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being convex or concave
    • B29C66/81422—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being convex or concave being convex
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2009/00—Layered products
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/712—Containers; Packaging elements or accessories, Packages

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closing Of Containers (AREA)
  • Packages (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。

Description

【発明の詳細な説明】 〔産業上の利用分野〕 この発明は、熱封緘によって密封された袋や容器などの
包装体及びその製造方法に関する。
〔従来の技術〕
開口部が熱封緘された包装体に要求される性能の一つは
、殺菌工程や運搬などの取扱い中に熱封緘部が自然に開
いて内容物が遺漏するようなことが無いことであり、他
方では、内容物を取り出す際に開封が容易に行えること
である。即ち、前者の性能は、熱封緘部の剥離強度をで
きるだけ大きくすること、例えば２．３　Ｋｇ／　１５
　ｍｙｐｚ以上にすることであり、後者はそれを小さく
すること、例えば１．０〜２．　Ｏｂ／　１５　ｍｔｘ
にすることである。
このような相矛盾した性能を満足させるような包装体は
、現在のところ見られない。
〔発明の目的〕
上記のような性能について、さらに検討を加えてみると
、内容物をよく保護できるということは、包装体の内部
からの剥離強度が大きいことであり、開封が容易である
ことは、開口部の外部からの剥離強度が小であればよい
ことが分る。
この発明は、上述のような着想に基いてなされたもので
あって、開口部の内部からの剥離強度が大で、外部から
の剥離強度が小であるような熱封緘部を有する密封包装
体及びその製造方法を提供することが目的である。
〔発明の構成〕
上記の目的を達成するため、この発明によれば、密封包
装体の熱封緘部に加熱加圧によって凹条を形成し、その
外側縁と内側縁をはゾ滑らかな線状とし、かつその断面
形状をその外側縁から内側縁の方向に次第に深くなるよ
うにしたのである。
また、製造方法においては、ヒートシーラ熱板の上型又
は下型の印圧面に、外側縁から内側縁の方向に次第に高
くなる凸条を設け、この熱板を用いて包装体の開口部近
辺をヒートシールし、密封包装体を製造するようにした
のである。
〔作　用〕
上記のように、熱封緘部に、加熱加圧によって凹条を設
け、この凹条の断面形状を外側縁から内側縁の方向に深
さが大きくなるようにしたので、凹条の外側縁に対応す
る接着部の接着強度は弱く、内側縁に対応するそれは強
くなって、熱封緘部の外部からの初期剥離強度が小とな
り容易に開封できる一方、内部からは容易に剥離しない
。
〔実施例〕
まず、包装体をヒートシールする熱板について説明する
。
第１１！ｌ乃至第４図に示すように、ヒートシーラ熱板
の上型１０には、その印圧面１１に凸条１２が設けられ
ており、下型２０の印圧面２１は平坦になっている。図
中、Ｈはヒータである。
上記凸条１２は、その外側縁１３及び内側縁１４がほゞ
滑らかな線状をなし、かつ外側縁から内側縁の方向に次
第に高さが大きくなっている。
なお、第４図（イ）に示すように、凸条１２の外側縁１
３から次第に高くなり、内側縁１４に近づくに従って平
坦になっていてもよく、或は第４図（ロ）のように、外
側縁１３から次第に高くなって頂点１５から内側縁１４
にかけて高さが低くなるようにしてもよい。この場合、
外側縁１３から頂点１５までのスロープの方が、頂点１
５から内側縁１４までスロープよりも緩やかであるのが
好ましい。
上記凸条１２は、上型或は下型のいずれに設けてもよく
、また凸条に対応する面に、シリコンゴム等のクッショ
ン材を設けておくことができる。
前記上型及び下型の全体形状は、図示のものに限らない
。包装体に応じて、三角形、円形など任意に選択すれば
よい。そのほか、平袋、自立袋、箱などにも、前記の熱
板を用いることができ、それぞれの包装形態に適用でき
る熱板の形状を採用すればよい。
第５図以下に、上記の熱板を用いてヒートシールを行な
う一例を示す。
図示のように、容器本体３０のフランジ３１に蓋４０を
載せ、フランジ３１の下面を下型２０で支持し、上型１
０の印圧面１１で蓋４０の上面を押圧し加熱すると、凸
条１２の形状に応じた凹条４１が形成される。この凹条
４１の断面形状は、その外側縁４２から内側縁４３の方
向に次第に深さが大きくなっている。また、外側縁４２
及び内側縁４３は共にはゾ滑らかな線状をなしている。
なお、凹条４１の形状は、包装体の材料の復元性、保形
性やヒートシール条件などによって、同一の熱板を用い
ても必ずしも同一にはならない。
第７図に示すように、印圧面１１′が平坦な上型１０′
と下型２０で容器本体３０のフランジ３１に蓋４０をヒ
ートシールした後、凸条１２を有する上型１０によって
再度加熱加圧してもよい。
また、この順序を逆にしてもよい。
このようにして製造される密封包装体の材料は、ヒート
シール可能なものであれば単体、積層体を問わず広い範
囲で選択可能である。例えば、容器本体３０はポリプロ
ピレンの成形品、蓋４ｏはアルミニウム箔４４と接着剤
層４５の積層体のごとくである。
以下、さらに詳細な実施例と比較例について述べる。
厚さ５００μのポリプロピレンシートを加熱成形して、
内容積１８０　ｃｃ　　の角形容器を１０個作成し、厚
さ５０μの軟質アルミニウム箔と厚さ３５μの変性高密
度ポリエチレンライルムとを熱硬化性ウレタン接着剤で
貼り合せ、前記容器のフランジに合せた形状に打ち抜い
て蓋を作成した。
上記容器に水を充填し、上記蓋を載置して温度２００℃
、圧力ａ　Ｋｇ／ｃａ、時間１秒の条件でヒートシール
を行ない密封容器を作成した。用いた熱板は、上型に巾
３■、最大高さ２１！翼の傾斜凸条を有するものであっ
た。
比較例として、同じ容器と蓋を用い、従来の平坦な印圧
面を有する熱板で同様に密封容器を１０個作成した。
さらに、実施例と比較例の密封容器に温度１２０℃で３
０へ分間、レトルト殺菌を施した。
これらの密封容器を手で開封したところ、いずれも容易
に開封することができた。
また、熱封緘部から巾１５ｍｍの試料を切り出し、容器
内部側からの剥離強度を測定したところ、実施例のもの
は、２．５〜４．０Ｋｇ／１５朋であり、比較例のもの
は、０．９〜１．２　Ｋｆ／　１５　ｍｔｔｔであった
。
〔発明の効果〕
この発明によれば、以上のように、包装体の熱封緘部に
、外側縁から内側縁の方向に次第に深くなる凹条を加熱
加圧によって形成したので、外側縁に対応する接着部の
接着強度が弱く、内側縁の方向に次第に強くなるため、
包装体の外部からの初期剥離力が弱くて済み、従って開
封が容易であり、内部からの剥離強度は強く内容物の保
護が充分行なえる。
さらに、上記のような優れた性能の密封包装体を従来と
ほとんど同じ方法で製造することができるのでコスト的
な負担がか１らない利点がある。
【図面の簡単な説明】
第１図はヒートシーラ熱板の断面線図、第２図は同上の
上型の平面図、第３図は上型の部分拡大斜視図、第４図
は凸条を示す部分拡大断面図、第５図は容器と蓋のヒー
トシール状態を示す部分拡大断面図、第６図は密封容器
の断面図、第７図は第５図の他の状態を示す部分拡大断
面図である。 １０・・・上型、１１・・・印圧面、１２・・・凸条、
１３・・・外側縁、１４・・・内側縁、１５・・・頂点
、２０・・・下型、２１・・・印圧面、３ｏ・・・容器
、３１・・・フランジ、３２・・・開口部、４０・・・
蓋、４１・・・凹条、４２・・・外側縁、４３・・・内
側縁 特許出願人　　　東洋アルミニウム株式会社同　代理人
　　鎌　　１）　文　　二 第５図

Claims (2)

    【特許請求の範囲】
  1. （１）内部に内容物を収納し熱封緘して密封した包装体
    において、その熱封緘部に加熱加圧によって凹条が形成
    され、この凹条はその外側縁及び内側縁がほゞ滑らかな
    線状をなし、かつ外側縁から内側縁の方向に次第に深さ
    が大きくなっていることを特徴とする密封包装体。
  2. （２）包装体に内容物を収納し、この包装体の開口部周
    辺を熱封緘して密封することから成る密封包装体の製造
    方法において、前記の熱封緘に用いる熱板の上型又は下
    型の印圧面に凸条を設け、この凸条の外側縁及び内側縁
    をほゞ滑らかな線状とし、かつ凸条の断面形状を外側縁
    から内側縁の方向に高さが次第に大きくなるようにし、
    この熱板によって熱封緘し、その熱封緘部に上記凸条に
    対応した凹条を形成することを特徴とする密封包装体の
    製造方法。
JP7869685A 1985-04-12 1985-04-12 密封包装体及びその製造方法 Expired - Fee Related JP2505733B2 (ja)

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JPS61244703A true JPS61244703A (ja) 1986-10-31
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WO2004076311A1 (ja) * 2003-02-26 2004-09-10 Idemitsu Unitech Co., Ltd. 易開封性包装体および易開封性包装体の製造方法
JP2009542543A (ja) * 2006-07-13 2009-12-03 アンプレス メタル パカージング ソシエテ アノニム 剥離性膜を備える容器の蓋の改良
JP2012254823A (ja) * 2011-06-10 2012-12-27 Showa Denko Packaging Co Ltd 密封容器のヒートシール方法および装置
WO2014157364A1 (ja) * 2013-03-29 2014-10-02 出光ユニテック株式会社 シール盤、シール方法、および容器
WO2015002106A1 (ja) * 2013-07-01 2015-01-08 サントリー食品インターナショナル株式会社 シールヘッドおよび同シールヘッドを用いて封止された容器
JP2019167131A (ja) * 2018-03-23 2019-10-03 フジッコ株式会社 改ざん防止機能付き再封可能な包装体のシール方法
JP2020055588A (ja) * 2018-10-01 2020-04-09 東洋製罐株式会社 包装袋、包装袋の製造方法、及び押圧部材

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JPS577975A (en) * 1980-06-17 1982-01-16 Matsushita Electric Ind Co Ltd Sollar battery

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS577975A (en) * 1980-06-17 1982-01-16 Matsushita Electric Ind Co Ltd Sollar battery

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WO2004076311A1 (ja) * 2003-02-26 2004-09-10 Idemitsu Unitech Co., Ltd. 易開封性包装体および易開封性包装体の製造方法
CN100448756C (zh) * 2003-02-26 2009-01-07 出光统一科技株式会社 易开封包装体以及易开封包装体的制造方法
US7967187B2 (en) 2003-02-26 2011-06-28 Idemitsu Unitech Co., Ltd. Easily unsealable packaging body and method of manufacturing the same
KR101064777B1 (ko) 2003-02-26 2011-09-14 이데미쓰 유니테크 가부시키가이샤 용이 개봉성 포장체 및 용이 개봉성 포장체의 제조 방법
JP2009542543A (ja) * 2006-07-13 2009-12-03 アンプレス メタル パカージング ソシエテ アノニム 剥離性膜を備える容器の蓋の改良
JP2012254823A (ja) * 2011-06-10 2012-12-27 Showa Denko Packaging Co Ltd 密封容器のヒートシール方法および装置
WO2014157364A1 (ja) * 2013-03-29 2014-10-02 出光ユニテック株式会社 シール盤、シール方法、および容器
JP2014198576A (ja) * 2013-03-29 2014-10-23 出光ユニテック株式会社 シール盤、シール方法、および容器
WO2015002106A1 (ja) * 2013-07-01 2015-01-08 サントリー食品インターナショナル株式会社 シールヘッドおよび同シールヘッドを用いて封止された容器
JP2015009881A (ja) * 2013-07-01 2015-01-19 大日本印刷株式会社 シールヘッドおよび同シールヘッドを用いて封止された容器
CN105473452A (zh) * 2013-07-01 2016-04-06 三得利食品饮料株式会社 密封头及使用该密封头而被密封的容器
US9902545B2 (en) 2013-07-01 2018-02-27 Suntory Beverage & Food Limited Seal head and container sealed with using the seal head
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CN112770980A (zh) * 2018-10-01 2021-05-07 东洋制罐株式会社 包装袋、包装袋的制造方法以及按压构件
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