JP4352166B2 - Container sealing device - Google Patents
Container sealing device Download PDFInfo
- Publication number
- JP4352166B2 JP4352166B2 JP2003113173A JP2003113173A JP4352166B2 JP 4352166 B2 JP4352166 B2 JP 4352166B2 JP 2003113173 A JP2003113173 A JP 2003113173A JP 2003113173 A JP2003113173 A JP 2003113173A JP 4352166 B2 JP4352166 B2 JP 4352166B2
- Authority
- JP
- Japan
- Prior art keywords
- container
- seal
- lid
- sealing device
- recess
- 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
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Classifications
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- 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
- B29C65/74—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area
- B29C65/745—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area using a single unit having both a severing tool and a welding tool
- B29C65/7451—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area using a single unit having both a severing tool and a welding tool the severing tool and the welding tool being movable with respect to one-another
-
- 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
- B29C65/74—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area
- B29C65/745—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area using a single unit having both a severing tool and a welding tool
- B29C65/7461—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area using a single unit having both a severing tool and a welding tool for making welds and cuts of other than simple rectilinear form
-
- 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
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- 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
- B29C66/2422—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 circular, oval or elliptical
- B29C66/24221—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 circular, oval or elliptical being circular
-
- 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
- B29C66/343—Making tension-free or wrinkle-free 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
- B29C66/50—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
- B29C66/50—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
- B29C66/61—Joining from or joining on the inside
- B29C66/612—Making circumferential 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
- B29C66/80—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
- B29C66/81—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
- B29C66/81431—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 cavity, e.g. a groove
-
- 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
- B29C66/82—Pressure application arrangements, e.g. transmission or actuating mechanisms for joining tools or clamps
- B29C66/824—Actuating mechanisms
- B29C66/8242—Pneumatic or hydraulic drives
-
- 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
- B29C66/84—Specific machine types or machines suitable for specific applications
- B29C66/849—Packaging machines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B7/00—Closing containers or receptacles after filling
- B65B7/16—Closing semi-rigid or rigid containers or receptacles not deformed by, or not taking-up shape of, contents, e.g. boxes or cartons
- B65B7/162—Closing semi-rigid or rigid containers or receptacles not deformed by, or not taking-up shape of, contents, e.g. boxes or cartons by feeding web material to securing means
- B65B7/164—Securing by heat-sealing
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Closing Of Containers (AREA)
- Package Closures (AREA)
Description
【0001】
【発明の属する技術分野】
この発明は、例えば、デザート等を収めたカップ状容器の口部を帯状蓋材で密封する密封装置に関する。
【0002】
【従来の技術】
この種の従来装置としては、容器の下細りテーパ状胴壁内面に蓋の周縁部をシールするシールヘッドを備えており、シールヘッドに、同胴壁内面と合致するシール押え面が形成されており、シール押え面の全体が、凹凸の無い平滑面となされているものが知られている(例えば、特許文献1参照。)。
【0003】
【特許文献1】
特開2002−255103号公報
【0004】
【発明が解決しようとする課題】
シール時における蓋の周縁部には弛みが生じることは避けられない。弛みをシールヘッドのシール押え面で押さえると、弛みは行き場を失って皺になる。皺は、襞状に折畳まれてシールされる。シールされた皺の大小およびその発生場所は、容器のシール面の周方向に均一ではなく、偏りがある。大きい皺が発生するところや皺が多く発生するところではシール圧が十分に取れずにシール不良となる。一方、皺の偏りはシール面の美観に影響を与える。
【0005】
この発明の目的は、シール不良を無くし、シール面の美観を向上させることのできる容器密封装置を提供することにある。
【0006】
【課題を解決するための手段】
この発明による容器密封装置は、容器の下細りテーパ状胴壁内面に蓋の周縁部をシールするシールヘッドを備えており、シールヘッドに、同胴壁内面と合致するシール押え面が形成されている容器密封装置において、シール押え面の周方向複数か所に、シール時における蓋周縁部の弛みを案内しうる凹所が形成されていることを特徴とするものである。
【0007】
この発明による容器密封装置では、シール時における蓋周縁部の弛みは凹所に案内され、弛みに起因する皺は、シール面の所定の複数箇所にできるようになる。
【0008】
また、従来、この種の容器密封装置では、シール後の容器内が容器外に比べて陽圧となる傾向があったが、凹所があると、シール後の容器内は陽圧になり難いことも分かった。容器内が陽圧となると、容器内のエアーは容器と蓋のシールが比較的弱い部分を通じて容器外に逃げようとし、その逃げようとする部分にはピンホールが形成されてシール不良となる。容器内が陽圧になり難い原因としては、凹所がエアー抜き通路を形成し、これを通じて、容器胴壁と蓋周縁部の間からエアーが抜けることによると推察される。
【0009】
したがって、この発明によれば、皺の偏りに起因するシール不良を防止することに加え、シール後の容器内圧に起因するシール不良をも防止することができる。
【0010】
さらに、シール押え面に上部領域および下部領域が形成され、凹所が、下部領域に位置させられていると、下部領域で弛みを案内し、上部領域で確実にシールすることができる。
【0011】
また、凹所の下端が開放されていると、蓋が折曲げられていく際、折曲げ当初より、シール押え面の下端に達している凹所によって皺が案内されるので、皺が凹所によって案内され易く、皺の形成に好適である。しかも、凹所によって形成されるエアー抜き通路を通じて、エアーを効率良く抜くことができ、一層のシール不良防止に効果的である。
【0012】
また、凹所が、上下方向にのびた溝の形態をなし、隣り合う凹所同士の間隔が一定であると、皺が均一にできるため、シール面の美観を向上させることができる。
【0013】
また、凹所の幅と、隣り合う凹所同士の間隔とがほぼ一致させられていると、さらなる美観の向上に貢献することができる。
【0014】
また、容器を保持するホルダを備えており、ホルダに容器挿入孔が形成され、容器挿入孔の周面上端部に、シール押え面と対応するシール受け面が形成され、シール受け面の内径が、全長にわたって一定でありかつ容器胴壁上端部の外径と等しくなされていると、シール押え面およびシール受け面の楔作用により、シール性が向上させられる。
【0015】
【発明の実施の形態】
この発明の実施の形態を図面を参照してつぎに説明する。
【0016】
図8を参照すると、この発明による容器密封装置によって製造された容器Cおよび蓋Lが示されている。
【0017】
容器Cは、紙製の丸カップ状のもので、下細りテーパ状胴壁Bを有している。胴壁B上端開口縁部にはカーリング部Kが設けられている。蓋Lは、熱可塑性プラスチックフィルム製蓋材Fから打抜かれたもので、胴壁B上端開口に落とし込まれて立上り縁部Rを形成し、これの外周面が胴壁B上端内周面にヒートシールされているものである。立上り縁部Rの下部領域には多数の内方突出状縦皺Mが一定間隔で形成されている。立上り縁部Rの外周の一部に連なってつまみTが設けられている。
【0018】
容器密封装置は、図1および図2に示すように、回転中心Mから所定距離を隔てた円周上に複数の容器ホルダ11(図示は1つのみ)が等間隔で設けられかつ容器ホルダ11がシールステーションSで順次停止させられるように間欠的に駆動される水平ターンテーブル12と、シールステーションSで停止させられた容器ホルダ11の上方を帯状蓋材Fが横切るように蓋材FをシールステーションSに供給する蓋材移送装置13と、シールステーションSにおけるターンテーブル12の上方に配置されている昇降体14と、昇降体14に垂下状に取付けられかつ帯状蓋材Fを蓋Lとこれの残余の蓋材Fとに分離するように蓋材Fを容器口縁部にそって打抜く垂直筒状カッタ15と、カッタ15の内側に配置されかつ打抜かれた蓋Lの周縁部を容器口縁部の内面にシールするシールヘッド16と、カッタ15を取り囲むように配置されている蓋材押え17とを備えている。
【0019】
容器ホルダ11は、方形水平板状のもので、上下貫通円形状容器保持孔21を有している。図3に詳細に示すように、容器保持孔21の内径はその全長にわたって一定でありかつ胴壁B上端の外径と等しくなされている。容器保持孔21の周面上端部にはシール受け面22が形成されている。シール受け面22の上端開口縁部には容器受け面24が、これを取囲むように環状カッタ逃げ溝23がそれぞれ形成されている。カッタ逃げ溝23は、全体的には円環状であるが、つまみTに対応する部分には膨出部23aを有している。容器ホルダ11上面において、カッタ逃げ溝23の外側に蓋材受け面25が形成されている。容器受け面24よりも蓋材受け面25が高レベルとなされている。
【0020】
容器保持孔21に胴壁Bがはめ入れられて容器受け面24でカーリング部Kが受けられることにより、容器Cがホルダ11に保持されるようになっている。
【0021】
昇降体14は、支持部材31に垂直下向きに取付られた第1流体圧シリンダ32によって昇降させられる水平板状頂板33と、頂板33の下方に間隔をおいて配置されている水平板状底板34と、頂板33および底板34の外周縁部複数カ所に介在させられている垂直棒状第1スペーサ35と、頂板33上面中央に垂直下向きに取付けられかつ第1流体圧シリンダ32のピストンロッドに連結されている第2流体圧シリンダ36とを備えている。
【0022】
第1流体圧シリンダ32には第1ガイドロッド41が垂直下向きに取付けられている。第1ガイドロッド41は、第1スペーサ35の近くで頂板33に摺動自在に貫通させられている。
【0023】
頂板33の中央部には、第2流体圧シリンダ36のピストンロッドを挿通させたロッド孔42が形成されている。底板34の中央部にはヘッド孔43が形成されている。ヘッド孔43の縁部には垂直筒状容器押え52が垂下状に設けられている。 第2流体圧シリンダ36のピストンロッドには水平円板状ヘッド取付板44が連結されている。ヘッド取付板44上面の周縁部複数カ所には第2ガイドロッド45が直立状に設けられている。第2ガイドロッド45は、第2流体圧シリンダ36と第1ガイドロッド41間において頂板33に摺動自在に貫通させられてその上方に突出させられている。第2ガイドロッド45の上方突出端にはストッパ46が設けられている。頂板33とストッパ46の間には、第2ガイドロッド45の上方突出部にはめられた第2スペーサ47が介在させられている。
【0024】
カッタ15は、容器押え52を取囲むように底板34下面から固定状に吊下げられかつ下端に、カッタ逃げ溝23の真上に位置させた刃51を有している。
【0025】
シールヘッド16は、ヘッド取付板44下面に垂下状に取付けられかつ下端部をヘッド孔43に入り込ませている垂直筒状ヒータ61と、ヒータ61の下端面に取付けられかつヒータ61によって加熱されるリング状シール部材62とを備えている。
【0026】
シール部材62下面の外周部には下方突出環状部71が設けられている。シール部材62の環状部71を含む外周面には、容器胴壁B内面に合致する下細りテーパ状シール押え面72が設けられている。
【0027】
ヘッド取付板44下面中央には、シールヘッド16の軸中心をのびるように吊下げロッド73が垂下状に設けられている。吊下げロッド73の下端部には蓋吸着部材74が取付けられている。蓋吸着部材74は、水平円板状のもので、その外周部分を環状部71の内側に入り込ませている。蓋吸着部材74の下面は、わずかであるが、環状部71下面より下方に突出させられている。
【0028】
ヘッド取付板44の外周面から中心に向かって有底横吸引孔75が形成されるとともに、横吸引孔75の底から吊下げロッド73の軸心を縦吸引孔76が下向きにのびている。縦吸引孔76の下端は、蓋吸着部材74の下面に開口させられている。
【0029】
蓋材押え17は、平面より見て、蓋材受け面25と同形状の水平板状のものである。蓋材押え17の下面全体には弾性材81が被覆されている。蓋材押え17の上面複数カ所には第3ガイドロッド82が直立状に設けられている。第3ガイドロッド82の上端部は、底板34に摺動自在に貫通させられている。第3ガイドロッド82の上方突出端にはストッパ83が設けられている。底板34と蓋材押え17の間には、第3ガイドロッド82にはめられた第2圧縮コイルばね84が介在させられている。
【0030】
図3および図4に詳細に示すように、シール部材62外周面のシール押え面72上方はストレートな円筒面である。シール押え面72の高さの中程を境界として、上部領域91および下部領域92が形成されている。上部領域91は全周にわたって平滑であるが、下部領域92には多数の凹所93が周方向に等間隔で形成されている。各凹所93は、上下方向にのびた溝のような形をしていて、その下端は下方に開放されている。凹所93の幅W1、隣り合う凹所93の間隔W2は、ほぼ等しい。ただし、凹所78の数は、適宜変更されるものであって、4〜360程度の範囲で、好ましくは、10〜120の範囲で変更される。図7を参照すると、凹所93の底面は断面円弧状の輪郭をなすものである。また、凹所93の深さは、凹所93の幅W1の1/4以上であることが好ましい。
【0031】
第1流体圧シリンダ32の作動により、昇降体14が昇降させられ、第2流体圧シリンダ36の作動により、シールヘッド16が昇降体14に対して昇降させられる。
【0032】
図1に示すように、昇降体14がその昇降ストローク上限に位置させられるとともに、シールヘッド16がその昇降ストローク上限に位置させられた状態で、蓋材押え17下面および蓋吸着部材74下面は、ほぼ同レベルであり、このレベル
よりもカッタ15の刃51のレベルは高くなっている。
【0033】
また、この状態で、第1流体圧シリンダ32のピストンロッドは、退入端に位置させられ、第2流体圧シリンダ36のピストンロッドは、突出端に位置させられている。このときに、第2流体圧シリンダ36へのエア供給は停止させられていて、そのピストンロッドを上向きに押圧すると、同ピストンロッドは自由に退入させられるようになっている。
【0034】
つぎに、図5および図6を参照して、容器密封動作を説明する。
【0035】
図5(a)は、図1と同じ状態を示すものである。図5(b)に示すように、蓋材押え17および蓋吸着部材74が蓋材Fにそれぞれ接触する位置まで昇降体14を下降させる。
【0036】
ついで、昇降体14を下降させると、図5(c)に示すように、第2圧縮コイルばね84を圧縮させることにより、そのばね力によって蓋材押え17は蓋材Fを押えたまま、カッタ15が蓋材Fに接触させられる。これと同時に、蓋材Fの抗力がシールヘッド16等の自重に打勝ち、第2流体圧シリンダ36のピストンロッドを退入させることにより、シールヘッド16が昇降体14に対して相対的に上昇させられる。
【0037】
さらに、図6(d)に示すように、昇降体14を下降させ、昇降体14が下限まで下降する間に、カッタ15が蓋材Fを打抜いて蓋Lが得られる。蓋Lの打抜きの際に、カッタ15を挟んでその外側からは第2圧縮コイルばね84のばね力が、その内側からはシールヘッド16等の重力が蓋材Fにそれぞれ作用させられる。これにより、打抜きか所のずれが防止され、カッタ15の切断性能が向上させられる。打抜かれた蓋Lは、蓋吸着部材74によって吸着される。
【0038】
昇降体14が下限まで下降すると、図6(e)に示すように、第2流体圧シリンダ36にエアを供給してそのピストンロッドを突出させ、シールヘッド16を下降させる。そうすると、蓋吸着部材74が蓋Lを吸着したままで、シール部材62は、容器胴壁B内に入り込む。このときに、蓋LのつまみTを含む外周部は、立上り縁部Rを形成する。容器胴壁B内に入り込んだシール部材62のシール押え面72は、容器胴壁Bおよび立上り縁部Rを介して容器ホルダ11のシール受け面22に押圧される。これにより、容器胴壁Bおよび立上り縁部Rのヒートシールが行われる。
【0039】
ヒートシールに際し、シール押え面72が下細りのテーパ状であるのに対し、シール受け面22は垂直である。したがって、シール押え面72およびシール受け面22の間には均一なシール圧が発生するのではなくて、双方の面72、22の上から下にかけて漸次小さくなるシール圧が発生する。そのため、シール圧の大きい部分程強くシールされることなり、シール性が向上する。
【0040】
さらに、シール部材62の上部領域91によってシールされる部分は全周にわたって均一にシールされる。一方、下部領域92によってシールされる部分は、凹所93の無い部分だけがシールされる。このときに生じた蓋の周縁部の弛みは、図7に示すように、凹所93内において皺Mとなるが、皺Mはシールされることは無い。
【0041】
さらに、シール時に、容器のシール面と蓋の周縁部下面の間から、エアは凹所93を通じて排出される。
【0042】
この後、シールヘッド16は、昇降体14とともに上昇させられるが、まず、図6(f)に示すように、シールヘッド16を先に上昇させる。このときに、シールヘッド16とともにこれに付着して容器Cが持上げられようとしても、これを容器押え52が阻止する。この後、昇降体14を上昇させる。
【0043】
上記において、容器がターンテーブルによって搬送される例が示されているが、容器はコンベヤで搬送するようにしてもよい。
【0044】
さらに、上記において、凹所は下部領域にのみ形成されている例が示されているが、これ以外の例を排除するものではない。凹所は、上部領域および下部領域のいずれか、または、双方に、あるいは、双方の領域にまたがるように形成されていてもよい。しかしながら、エアー抜きの機能、皺の形状、シール性、製品としての見栄え等を総合的に考慮すると、下部領域にのみ凹所があることが好ましい。
【0045】
【発明の効果】
この発明によれば、シール不良を無くし、シール面の美観を向上させることができる。
【図面の簡単な説明】
【図1】この発明による密封装置の垂直横断面図である。
【図2】図1のII−IIにそう水平横断面図である。
【図3】シールヘッド周辺の拡大断面図である。
【図4】シールヘッドの詳細説明図である。
【図5】同密封装置によるシール動作説明図である。
【図6】図5に続くシール動作説明図である。
【図7】シール状態説明図である。
【図8】同密封装置によってシールされた容器の斜視図である。
【符号の説明】
14 昇降体
15 カッタ
16 シールヘッド
72 シール押え面
91 上部領域
92 下部領域
93 凹所
L 蓋
F 蓋材[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a sealing device that seals, for example, a mouth of a cup-shaped container containing dessert or the like with a band-shaped lid member.
[0002]
[Prior art]
As this type of conventional device, a seal head for sealing the peripheral edge of the lid is provided on the inner surface of the tapered wall of the tapered bottom of the container, and a seal pressing surface that matches the inner surface of the body wall is formed on the seal head. In addition, it is known that the entire seal pressing surface is a smooth surface without unevenness (see, for example, Patent Document 1).
[0003]
[Patent Document 1]
Japanese Patent Laid-Open No. 2002-255103
[Problems to be solved by the invention]
It is inevitable that slack will occur at the peripheral edge of the lid during sealing. When the slack is pressed by the seal pressing surface of the seal head, the slack loses its place and becomes a habit. The scissors are folded and sealed in a scissors shape. The size and location of the sealed wrinkles are not uniform and uneven in the circumferential direction of the sealing surface of the container. In places where large wrinkles are generated or wrinkles are generated, the seal pressure is not sufficiently obtained, resulting in a seal failure. On the other hand, the wrinkle bias affects the aesthetics of the seal surface.
[0005]
An object of the present invention is to provide a container sealing device that can eliminate a sealing failure and improve the appearance of a sealing surface.
[0006]
[Means for Solving the Problems]
The container sealing device according to the present invention includes a seal head that seals the peripheral edge of the lid on the inner surface of the lower tapered barrel wall of the container, and a seal pressing surface that matches the inner surface of the barrel wall is formed on the seal head. The container sealing device according to the present invention is characterized in that a plurality of recesses that can guide the loosening of the peripheral edge of the lid during sealing are formed at a plurality of locations in the circumferential direction of the seal pressing surface.
[0007]
In the container sealing device according to the present invention, the slack in the peripheral edge of the lid during sealing is guided to the recess, and wrinkles due to the slack can be formed at a predetermined plurality of locations on the seal surface.
[0008]
Conventionally, in this type of container sealing device, the inside of the sealed container tended to be a positive pressure compared to the outside of the container. However, if there is a recess, the inside of the sealed container is less likely to be a positive pressure. I also understood that. When the inside of the container becomes positive pressure, the air in the container tends to escape to the outside of the container through a portion where the seal between the container and the lid is relatively weak, and a pinhole is formed in the portion that tries to escape, resulting in a poor seal. The reason why the inside of the container is less likely to be positive pressure is presumed to be that the recess forms an air vent passage through which air escapes from between the container body wall and the peripheral edge of the lid.
[0009]
Therefore, according to the present invention, in addition to preventing a sealing failure due to wrinkle bias, it is possible to prevent a sealing failure due to the container internal pressure after sealing.
[0010]
Further, when the upper region and the lower region are formed on the seal pressing surface and the recess is positioned in the lower region, the slack is guided in the lower region, and the upper region can be reliably sealed.
[0011]
In addition, when the lower end of the recess is open, when the lid is bent, the hook is guided by the recess reaching the lower end of the seal holding surface from the beginning of the folding, so the hook is recessed. It is easy to guide and is suitable for the formation of ridges. In addition, the air can be efficiently extracted through the air vent passage formed by the recess, which is effective in preventing further sealing failure.
[0012]
Further, if the recesses are in the form of a groove extending in the vertical direction and the distance between adjacent recesses is constant, the wrinkles can be made uniform, so that the appearance of the sealing surface can be improved.
[0013]
Moreover, if the width of the recesses and the interval between the adjacent recesses are substantially matched, it is possible to contribute to further improving the aesthetic appearance.
[0014]
In addition, a holder for holding the container is provided, a container insertion hole is formed in the holder, a seal receiving surface corresponding to the seal pressing surface is formed at the upper end of the peripheral surface of the container insertion hole, and the inner diameter of the seal receiving surface is If it is constant over the entire length and equal to the outer diameter of the upper end portion of the container body wall, the sealing performance is improved by the wedge action of the seal pressing surface and the seal receiving surface.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
[0016]
Referring to FIG. 8, a container C and a lid L manufactured by the container sealing device according to the present invention are shown.
[0017]
The container C is a paper-made round cup shape, and has a lower tapered barrel wall B. A curling portion K is provided on the upper end opening edge of the trunk wall B. The lid L is punched from the thermoplastic film lid material F, dropped into the upper end opening of the trunk wall B to form a rising edge R, and the outer peripheral surface thereof is the inner peripheral surface of the upper end of the trunk wall B. It is heat sealed. In the lower region of the rising edge R, a large number of inwardly projecting vertical rods M are formed at regular intervals. A knob T is provided continuously to a part of the outer periphery of the rising edge R.
[0018]
As shown in FIGS. 1 and 2, the container sealing device includes a plurality of container holders 11 (only one in the figure) provided at equal intervals on a circumference spaced a predetermined distance from the rotation center M, and the
[0019]
The
[0020]
The container C is held by the
[0021]
The elevating
[0022]
A
[0023]
A
[0024]
The
[0025]
The
[0026]
A downward projecting
[0027]
At the center of the lower surface of the
[0028]
A bottomed
[0029]
The
[0030]
As shown in detail in FIGS. 3 and 4, the
[0031]
The
[0032]
As shown in FIG. 1, the lower surface of the
[0033]
In this state, the piston rod of the first
[0034]
Next, the container sealing operation will be described with reference to FIGS. 5 and 6.
[0035]
FIG. 5 (a) shows the same state as FIG. As shown in FIG. 5 (b), the elevating
[0036]
Next, when the elevating
[0037]
Further, as shown in FIG. 6 (d), the elevating
[0038]
When the elevating
[0039]
In heat sealing, the
[0040]
Further, the portion sealed by the
[0041]
Further, during sealing, air is exhausted through the
[0042]
Thereafter, the
[0043]
In the above example, the container is conveyed by the turntable. However, the container may be conveyed by a conveyor.
[0044]
Further, in the above, an example in which the recess is formed only in the lower region is shown, but other examples are not excluded. The recess may be formed so as to extend over one or both of the upper region and the lower region, or both regions. However, considering the air venting function, the shape of the ridge, the sealing performance, the appearance of the product, etc., it is preferable that there is a recess only in the lower region.
[0045]
【The invention's effect】
According to the present invention, it is possible to eliminate a sealing failure and improve the appearance of the sealing surface.
[Brief description of the drawings]
FIG. 1 is a vertical cross-sectional view of a sealing device according to the present invention.
FIG. 2 is a horizontal cross-sectional view taken along line II-II in FIG.
FIG. 3 is an enlarged cross-sectional view around a seal head.
FIG. 4 is a detailed explanatory view of a seal head.
FIG. 5 is an explanatory view of a sealing operation by the sealing device.
6 is an explanatory diagram of a sealing operation subsequent to FIG. 5. FIG.
FIG. 7 is an explanatory diagram of a seal state.
FIG. 8 is a perspective view of a container sealed by the sealing device.
[Explanation of symbols]
14 Lifting body
15 cutter
16 Seal head
72 Seal holding surface
91 Upper area
92 Lower area
93 Recess L Lid F Lid
Claims (4)
シール押え面に上部領域および下部領域が形成され、凹所が、下部領域に位置させられており、
凹所の下端が、下方に開放されている容器密封装置。In a container sealing device comprising a seal head for sealing a peripheral edge of a lid on an inner surface of a tapered wall of a tapered wall of a container, and a seal presser surface that matches the inner surface of the shell wall is formed on the seal head. In several places in the circumferential direction of the surface, there are formed recesses that can guide the slack of the peripheral edge of the lid at the time of sealing ,
An upper region and a lower region are formed on the seal pressing surface, and a recess is located in the lower region,
A container sealing device in which the lower end of the recess is opened downward .
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003113173A JP4352166B2 (en) | 2003-04-17 | 2003-04-17 | Container sealing device |
US10/709,095 US20040206048A1 (en) | 2003-04-17 | 2004-04-13 | Apparatus for sealing containers |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003113173A JP4352166B2 (en) | 2003-04-17 | 2003-04-17 | Container sealing device |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2004315050A JP2004315050A (en) | 2004-11-11 |
JP4352166B2 true JP4352166B2 (en) | 2009-10-28 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP2003113173A Expired - Fee Related JP4352166B2 (en) | 2003-04-17 | 2003-04-17 | Container sealing device |
Country Status (2)
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---|---|
US (1) | US20040206048A1 (en) |
JP (1) | JP4352166B2 (en) |
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GB2470210B (en) * | 2009-05-14 | 2011-07-06 | Relco Uk Ltd | Apparatus and method for sealing a container |
DE102010004635B4 (en) * | 2010-01-14 | 2011-09-22 | Multivac Sepp Haggenmüller Gmbh & Co. Kg | sealing tool |
US9850021B2 (en) * | 2011-03-25 | 2017-12-26 | Sonoco Development, Inc. | Paper-based composite container for off-gassing products, and method for making same |
JP6095896B2 (en) * | 2012-02-22 | 2017-03-15 | 株式会社Mizkan Holdings | Film welding method and apparatus, method for producing food in container, method for producing natto in container |
JP6095895B2 (en) * | 2012-02-22 | 2017-03-15 | 株式会社Mizkan Holdings | Container sealing method and apparatus, manufacturing method of food in container, manufacturing method of natto in container |
ITBO20120283A1 (en) * | 2012-05-24 | 2013-11-25 | Gruppo Fabbri Vignola Spa | DEVICE FOR THE CYCLICAL TENSION OF THE FILTER CLOSING OF TRAYS IN SEALING MACHINES |
FR3022222B1 (en) * | 2014-06-17 | 2019-04-12 | 1/4 Vin | METHOD AND DEVICE FOR THERMOSCELLING A FILLER ON A GLASS DRINK |
US10196184B2 (en) * | 2014-11-12 | 2019-02-05 | A-American Machine & Assembly Co. | Manual container sealer and methods |
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IT201600071546A1 (en) * | 2016-07-11 | 2018-01-11 | Azionaria Costruzioni Acma Spa | Hermetic closure device for food product containment packages. |
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EP3315291A1 (en) | 2016-10-28 | 2018-05-02 | Danapak Flexibles A/S | An applicator tool for attaching a membrane to an inner surface of a side wall of a container and a method of use thereof |
DE102017101150B3 (en) | 2017-01-20 | 2018-05-30 | Ardagh Mp Group Netherlands B.V. | Tool and method for closing a container and method for producing a container having a plurality of spaces |
ES2824455T3 (en) * | 2017-08-30 | 2021-05-12 | Multivac Haggenmueller Kg | Sealing station as well as procedure for the production of film packaging with opening corner |
FR3102462B1 (en) * | 2019-10-25 | 2022-04-01 | Guelt | DEVICE FOR SEALING CONTAINERS MADE OF RIGID MATERIAL SUCH AS GLASS, STONEWARE OR PORCELAIN |
IT201900024571A1 (en) * | 2019-12-18 | 2021-06-18 | Sarong Spa | APPARATUS AND METHOD OF SHEARING AND JOINING A SHEET ELEMENT TO A CONTAINER |
JPWO2021187293A1 (en) * | 2020-03-16 | 2021-09-23 | ||
MX2023005419A (en) * | 2020-11-09 | 2023-05-22 | Sonoco Dev Inc | Seal and cut assembly for heat sealing machine. |
EP4032689A1 (en) * | 2021-01-22 | 2022-07-27 | Ulma Packaging, S.Coop. | Heat-sealing machine for generating easy-open packages |
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US4599123A (en) * | 1982-09-02 | 1986-07-08 | Esselte Pac Aktiebolag | Method and apparatus for manufacturing a container having an inner end closure |
US4888935A (en) * | 1988-07-25 | 1989-12-26 | Campbell Soup Company | Method for sealing a lid to a container |
SE9102511D0 (en) * | 1991-09-03 | 1991-09-03 | Norden Pac Dev Ab | METHOD AND APPARATUS FOR MANUFACTURING A CONTAINERFILLED WITH A PRODUCT |
FR2716408B1 (en) * | 1994-02-22 | 1996-05-15 | Georges Sireix | Method for manufacturing tubular packaging and packaging obtained by implementing the method. |
-
2003
- 2003-04-17 JP JP2003113173A patent/JP4352166B2/en not_active Expired - Fee Related
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2004
- 2004-04-13 US US10/709,095 patent/US20040206048A1/en not_active Abandoned
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JP2004315050A (en) | 2004-11-11 |
US20040206048A1 (en) | 2004-10-21 |
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