JP4675549B2 - 超音波溶着用ホーン - Google Patents

超音波溶着用ホーン Download PDF

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Publication number
JP4675549B2
JP4675549B2 JP2003045517A JP2003045517A JP4675549B2 JP 4675549 B2 JP4675549 B2 JP 4675549B2 JP 2003045517 A JP2003045517 A JP 2003045517A JP 2003045517 A JP2003045517 A JP 2003045517A JP 4675549 B2 JP4675549 B2 JP 4675549B2
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JP
Japan
Prior art keywords
horn
welded
article
flange
tip
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Expired - Fee Related
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JP2003045517A
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JP2004255580A (ja
Inventor
孝昌 藤井
浩 北島
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Shikoku Kakoki Co Ltd
Toppan Inc
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Shikoku Kakoki Co Ltd
Toppan Inc
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Priority to JP2003045517A priority Critical patent/JP4675549B2/ja
Publication of JP2004255580A publication Critical patent/JP2004255580A/ja
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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
    • B29C66/80—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
    • 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
    • B29C65/08—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations
    • 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
    • B29C66/50—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
    • B29C66/532—Joining single elements to the wall of tubular articles, hollow articles or bars
    • B29C66/5324—Joining single elements to the wall of tubular articles, hollow articles or bars said single elements being substantially annular, i.e. of finite length
    • B29C66/53245—Joining single elements to the wall of tubular articles, hollow articles or bars said single elements being substantially annular, i.e. of finite length said articles being hollow
    • B29C66/53246—Joining single elements to the wall of tubular articles, hollow articles or bars said single elements being substantially annular, i.e. of finite length said articles being hollow said single elements being spouts, e.g. joining spouts to containers
    • B29C66/53247—Joining single elements to the wall of tubular articles, hollow articles or bars said single elements being substantially annular, i.e. of finite length said articles being hollow said single elements being spouts, e.g. joining spouts to containers said spouts comprising flanges
    • 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
    • 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
    • B29C66/63—Internally supporting the article during joining
    • 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
    • B29C66/81411—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
    • B29C66/81425—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 stepped, e.g. comprising a shoulder
    • 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
    • B29C66/70—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
    • B29C66/73—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 intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739—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 intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392—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 intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • 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
    • B29C66/81423—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 concave
    • 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
    • B29L2031/7162—Boxes, cartons, cases
    • B29L2031/7166—Cartons of the fruit juice or milk type, i.e. containers of polygonal cross sections formed by folding blanks into a tubular body with end-closing or contents-supporting elements, e.g. gable type containers

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Making Paper Articles (AREA)
  • Package Closures (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Description

【０００１】
【産業上の利用分野】
この発明は、溶着すべき物品、例えば各種液体などを収容する紙複合容器に使用されるプラスチック製の注出口をこの紙複合容器に溶着する超音波溶着機のホーンに関する。
【０００２】
【従来の技術】
従来、紙複合容器などに見られるように、プラスチックス製の注出口を備えた紙複合容器は、図７に示すように、容器本体０１の上部斜面０２に設けた開孔に注出口０３を装着し、その注出口０３のフランジ部０４を超音波溶着していた。そして、この注出口０３のフランジ部０４の溶着に際しては、図６に示すように、スリーブ状となっている容器本体０１の開孔０５に内側から注出口０３を挿入し、この容器本体０１内に当て０６を配置すると共に、外方から超音波溶着機のホーン０７を前記注出口０３を覆うようにしてフランジ部０４に対応位置させて当てている。ホーン本体０８の前部には注出口０３の突出した筒部０９を収納するための凹部０１０が設けられている。
【０００３】
【発明が解決しようとする課題】
しかし、従来のホーン本体０８の先端０１１の形状（紙複合容器との接触部位形状）は、図７或いは図８に示すようなものが採用されている。
【０００４】
まず図７に示される先端０１１の形状は、広く一般的に採用されている形態であつて、先端０１１の内外中間部分に全周にわたる突条０１２が突設されている。その結果、注出口フランジ部０４の外周径よりもホーン先端０１１の外周径が小さく、注出口フランジ部０４の外周部０４１、更には内周部０４２を紙複合容器０１内面に完全に溶着することができず、フランジ部０４の内外両周部０４１，０４２に浮きが生じる欠点があった。
【０００５】
また、図８に示される先端０１１の形状は、まれに使用される形態ではあるが、内外全域にわたって同一平面内に先端０１１が存在し、かつ、注出口フランジ部０４の外周径よりも先端０１１の外周径が大きい形態を備えている。この形態では、条件が揃えば紙複合容器０１の内面と注出口フランジ部０４の外周に浮きを生じることなく溶着することが可能であが、装置の設置環境や連続的な安定性、溶着させる溶着面の表面温度、材質構成などの影響を受けるため、過大なエネルギーを与えることによって実現している。その結果、溶着後の注出口フランジ部０４の接液表面０４３に荒れが生じたり、薄肉部などにピンホールを生じたり、注出口０３におけるハーフカット部（プルリングのハーフカット部）に致命的な欠陥となる部分的な割れを発生させるなどの問題点を抱えている。
【０００６】
特に、注出口付き紙複合容器を無菌充填成形する場合には、注出口と紙複合容器を溶着前に完全に無菌化して、無菌環境下で溶着することが困難であるため、注出口を溶着した後に滅菌操作に入ることとなる。その際に殺菌剤（過酸化水素など）をより均一に付着させるために、隙間になる部位が存在しないことが重要であり、その為には注出口フランジ外周部０４１の完全な溶着と接液面表面０４３の平面性を維持することとフランジ部内周部０４２の密着（もしくは溶着）が必要になる。
【０００７】
そこで、本発明者等は、このような従来の手法の問題点を解消するべく鋭意検討、研究を重ねた結果、必要溶着面積を少なくして必要エネルギーを可及的に少なくしながらも注出口外周面の完全な溶着と接液面表面の平面性を維持することとフランジ部内周面の密着（もしくは溶着）とをうまく達成できる全く新規な超音波溶着用ホーンを開発することに成功したので、ここに提案する。
【０００８】
【課題を解決するための手段】
この発明の請求項１に記載された超音波溶着用ホーンは、フランジ部を備えた溶着すべき物品を収納するための凹部を有し、前記溶着すべき物品をこの凹部に収納してホーン本体の先端をこの溶着すべき物品の前記フランジと取り付け側容器の外表面に付勢状態で当接させ、ホーン本体に超音波振動を付与することによって、前記溶着すべ物品を取り付け側の容器に溶着するようにした超音波溶着ホーンであって、ホーン本体の先端を前記溶着すべき物品のフランジ外周縁を挟んでその内外にわたる所定の範囲に対応するようにホーン本体先端の径を溶着すべき物品の前記フランジの径よりも大径に形成して、このホーン本体先端の前記溶着すべき物品のフランジ部外周縁に対応する部位を超音波振動エネルギーが直接的に作用する部位に形成すると共に、このホーン本体先端の前記溶着すべき物品のフランジ外周縁に対応する部位よりも内周側にはホーン本体の先端から基部側に凹入させて、内周側から段差とその外側に引き続く凹溝を形成したものである。
【０００９】
【作用】
以上の構成による超音波溶着用ホーンにおいては、溶着すべき物品のフランジの外周側は、その外周縁に対応する部位に直接的に超音波振動エネルギーが与えられてこのフランジの外周側はその外周縁を含んで内周側に向かって所定の範囲で、取り付け容器、例えば紙複合容器の内面等に溶着される。また、溶着すべき物品のフランジの内周側にはホーン本体の先端から基部側に凹入させて、内周側から段差とその外側に引き続く凹溝の複合形状が形成されるので、この部位に対応するホーン本体の先端が紙複合容器の表面からホーン本体の基部側に凹入した分、必要溶着面が可及的に少なくなる。したがって、超音波振動エネルギーは少なくなるが、エネルギーの作用する範囲内にあるので、紙複合容器の内面に密着（もしくは溶着）される。
【００１０】
【００１１】
【発明の実施の形態】
以下、この発明に係る超音波溶着用ホーンの実施の形態を図１〜４の記載に基づいて説明する。
この超音波溶着用ホーン（図例では先端部分のみ表す）は、図１に示されるように、円形のホーン本体１の前方に、注出口である溶着すべき物品Ｃ（この発明において以下単に注出口Ｃという）の突出部分Ｃ１が収納されるように形成された、凹部２が設けられている。
【００１２】
このホーン本体１の先端３、つまり紙複合容器Ａとの接触部位の形状が、まず第１に、このホーン本体１の先端３の径Ｄが注出口Ｃのフランジ部４の径ｄよりも大径に形成され、第２に、図１〜２に示すように、この注出口Ｃのフランジ部４の外周縁４Ａに対応する部位３Ａよりも内周側に於いて前記凹部２の底部２Ａ側、つまりホーン本体１の先端から基部側に引退した部分５を備えて形成されている。
なお、本発明においた前記引退するとは、図１に明示する通り、ホーン本体の先端（紙複合容器Ａ存在側）から基端側、つまり紙面右側から左側へ凹入することを意図して用いる。以下の記載においても同様である。
【００１３】
前記注出口Ｃのフランジ部４の外周縁４Ａに対応する部位３Ａは、この外周縁４Ａを挟んでその内外にわたる所定の範囲に対応するように寸法設定されている。したがって、超音波振動が与えられると、少なくともこの注出口Ｃのフランジ部４の外周縁４Ａから内周側に向かって所定寸法の範囲は、紙複合容器Ａの内面Ａ２に完全に溶着されることになる。
【００１４】
この引退した部分５は、更に具体的には、図２〜３に示すように、内周側に形成された段差６とこの段差６の外周側に引き続いて設けせられ凹溝７とから構成される。
段差６は、０．００１ｍｍ以上、０．２ｍｍ以下の範囲に寸法設定されている。
【００１５】
また、このホーン本体１の先端３は、その外周側がより下位、つまりホーン本体基部から遠ざかる方向（図２上、紙複合容器Ａ存在側）に位置するように構成されることが望ましい。具体的には、５°以下の微細な傾斜角を施すのが望ましい。なお、この傾斜角の下限は０°であることは言うまでも無い。
【００１６】
上記の構造の超音波溶着用ホーンによって被溶着物品Ｃの、超音波溶着が行われるものであって、図４に示すように、被溶着物品Ｃの突出部分Ｃ１を収納するようにしてホーン本体１の先端３が前記被溶着物品Ｃと取り付け側の紙複合容器Ａの外表面Ａ１に付勢状態で当接する。そして、溶着機（図外）を作動させると、超音波振動によりホーン本体１が紙複合容器Ａの外表面Ａ１に対し遠近方向に繰り返し往復する。
【００１７】
この時、ホーン先端３の前記注出口Ｃのフランジ部４の外周縁４Ａに対応する部位３Ａは、超音波振動エネルギーを直接的に作用させ、この外周縁４Ａを挟んでその内外にわたる所定の範囲に超音波振動エネルギーを直接的に与える。その結果、この外周縁４Ａを含めて内周側に向かった所定の範囲Ｚ（図４参照）を完全に溶着する。また、前記部位３Ａより内周側の段差６や凹溝７の存在によって、溶着時、この段差６や凹溝７が対応する注出口Ｃや紙複合容器Ａに与えられる超音波振動エネルギーは少なくなるが、超音波振動エネルギーは作用する範囲内であるため、フランジ部４の内周部４Ｂにおいては、このフランジ部４と紙複合容器Ａとは密着、場合によって溶着される。また、注出口Ｃのフランジ部４の接液表面４Ｃの前記所定の範囲Ｚの平面性が保たれる。したがって、この注出口付き紙複合容器を無菌充填成形する場合に、過酸化水素などの殺菌剤が付着する表面の荒れが無くなるため、安全性、殺菌剤の乾燥工程の乾燥効率を上げることができる。
【００１８】
また、段差６或いは凹溝７は、超音波溶着時に注出口Ｃのフランジ部４の溶融樹脂の、言わば退避空間の如き機能を発揮する。その結果、溶融樹脂がフランジ部４の外周縁４Ａよりも更に外方にはみ出して、フランジの本来の円形形状が崩れてしまうのをうまく抑えるように働く。
【００１９】
このように、図９に示す従来構造に比べて、フランジ部４の外周側と紙複合容器Ａを安定的に溶着でき、また、内周側も密着若しくは溶着して、フランジ部４の内外周側共に未密着部の浮きを最小限に抑えることが可能になった。また、段差６や凹溝７を備えることによって、図１０の従来構造に比べて超音波振動に要するエネルギーを可及的に少なくすることができるようになった。その結果、注出口Ｃの薄肉部などにピンホールを生じたり、ハーフカット部（プルリングのハーフカット部）に致命的な欠陥となる部分的な割れを発生させるなどの問題点を可及的に少なくできるようになった。
【００２０】
また、このように注出口Ｃのフランジ部４の内・外両周部の紙複合容器Ａとの溶着、密着を安定的に行え、従来のようなフランジ部内・外両周部の紙複合容器Ａからの浮きを可及的になくすることができるために、滅菌（殺菌）工程を有する充填成形機においてこの超音波溶着用ホーンを採用するは大変望ましい。つまり、滅菌操作時に殺菌剤（過酸化水素など）が付着する隙間となる部分がなくなるからである。
【００２１】
【００２２】
【００２３】
【発明の効果】
この発明の請求項１に記載された超音波溶着用ホーンは、以下の効果を奏する。
すなわち、必要溶着面積を可及的に少なくできるので、溶着に要するエネルギーを可及的に少なくできる。その結果、溶着すべき物品の外周部の完全な溶着と溶着すべき物品の内周部の密着（若しくは溶着）をうまく達成し、溶着すべき物品の内外周部の浮きをうまく無くすことができ、併せて接液表面の平面性を維持することができる。更に、その結果、薄肉部などにピンホールを生じたり、ハーフカット部（プルリングのハーフカット部）に致命的な欠陥となる部分的な割れを発生させるなどの問題点を可及的に少なくできるようになった。
【００２４】
また、溶着すべき物品の内外周部の浮きを可及的になくすことができるために、例えば溶着すべき物品が紙複合容器の注出口である場合、滅菌（殺菌）工程を有する充填成形機にこの超音波溶着用ホーンを採用すると、滅菌操作時に殺菌剤（過酸化水素など）が付着する隙間となる部分が無いので、安全性、殺菌剤の乾燥工程の乾燥効率を上げることができ、省エネルギーや作業の効率化に寄与する。
【図面の簡単な説明】
【図１】 この発明の一実施の形態における超音波溶着用ホーンを断面で示す説明図である。
【図２】 図１に示される超音波溶着用ホーンの要部の断面的説明図である。
【図３】 図１に示される超音波溶着用ホーンの先端形状の拡大説明図である。
【図４】 図１に示される超音波溶着用ホーンの作用の拡大断面的説明図である。
【図５】 注出口を有した紙複合容器を示す説明図である。
【図６】 従来の超音波溶着の作用を示す説明図である。
【図７】 従来の超音波溶着ホーンの先端形状を示す断面的説明図である。
【図８】 従来の超音波溶着ホーンの更に別の先端形状を示す断面的説明図である。
【符号の説明】
１…ホーン本体，２…凹部，３…ホーンの先端，３Ａ…フランジ部外周縁に対応する部位，４…フランジ部，４Ａ…外周縁，４Ｂ…内周部，４Ｃ…接液表面，５…後退した部位，６…段差，７…凹溝，Ａ…紙複合容器，Ａ１…外面，Ａ２…内面，Ｃ…注出口，Ｃ１…突出部分，Ｄ…ホーン本体先端の径，ｄ…フランジ部の径，Ｚ…範囲。

Claims (1)

  1. フランジ部を備えた溶着すべき物品を収納するための凹部を有し、前記溶着すべき物品をこの凹部に収納してホーン本体の先端をこの溶着すべき物品の前記フランジと取り付け側容器の外表面に付勢状態で当接させ、ホーン本体に超音波振動を付与することによって、前記溶着すべ物品を取り付け側の容器に溶着するようにした超音波溶着ホーンであって、ホーン本体の先端を前記溶着すべき物品のフランジ外周縁を挟んでその内外にわたる所定の範囲に対応するようにホーン本体先端の径を溶着すべき物品の前記フランジの径よりも大径に形成して、このホーン本体先端の前記溶着すべき物品のフランジ部外周縁に対応する部位を超音波振動エネルギーが直接的に作用する部位に形成すると共に、このホーン本体先端の前記溶着すべき物品のフランジ外周縁に対応する部位よりも内周側にはホーン本体の先端から基部側に凹入させて、内周側から段差とその外側に引き続く凹溝を形成してあることを特徴とする超音波溶着用ホーン。
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JPS4856765A (ja) * 1971-11-04 1973-08-09
JPS53141373A (en) * 1977-05-16 1978-12-09 Koatsu Kako Method for connecting body of extruded tube to faucet portion thereof
JPS62242526A (ja) * 1986-04-15 1987-10-23 大日本印刷株式会社 紙容器注出口のシ−ル方法
JPS63188126U (ja) * 1987-05-27 1988-12-02
JPH0374934U (ja) * 1989-11-24 1991-07-26
JPH11500090A (ja) * 1995-02-13 1999-01-06 ザ、プロクター、エンド、ギャンブル、カンパニー 押し出しチューブ容器およびその製造方法
JP2002002759A (ja) * 2000-06-14 2002-01-09 Dainippon Printing Co Ltd 注出口栓

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JPS4856765A (ja) * 1971-11-04 1973-08-09
JPS53141373A (en) * 1977-05-16 1978-12-09 Koatsu Kako Method for connecting body of extruded tube to faucet portion thereof
JPS62242526A (ja) * 1986-04-15 1987-10-23 大日本印刷株式会社 紙容器注出口のシ−ル方法
JPS63188126U (ja) * 1987-05-27 1988-12-02
JPH0374934U (ja) * 1989-11-24 1991-07-26
JPH11500090A (ja) * 1995-02-13 1999-01-06 ザ、プロクター、エンド、ギャンブル、カンパニー 押し出しチューブ容器およびその製造方法
JP2002002759A (ja) * 2000-06-14 2002-01-09 Dainippon Printing Co Ltd 注出口栓

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