JP6695489B1 - Method and device for inspecting fusion strength of upper lid of packaging container - Google Patents

Method and device for inspecting fusion strength of upper lid of packaging container Download PDF

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Publication number
JP6695489B1
JP6695489B1 JP2019227098A JP2019227098A JP6695489B1 JP 6695489 B1 JP6695489 B1 JP 6695489B1 JP 2019227098 A JP2019227098 A JP 2019227098A JP 2019227098 A JP2019227098 A JP 2019227098A JP 6695489 B1 JP6695489 B1 JP 6695489B1
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Japan
Prior art keywords
upper lid
temperature range
lid
predetermined temperature
inner lid
Prior art date
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Expired - Fee Related
Application number
JP2019227098A
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Japanese (ja)
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JP2021096141A (en
Inventor
森山　育幸
育幸 森山
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Tetra Laval Holdings and Finance SA
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Tetra Laval Holdings and Finance SA
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Priority to JP2019227098A priority Critical patent/JP6695489B1/en
Application granted granted Critical
Publication of JP6695489B1 publication Critical patent/JP6695489B1/en
Priority to PCT/EP2020/085373 priority patent/WO2021122244A1/en
Publication of JP2021096141A publication Critical patent/JP2021096141A/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B29C65/82—Testing the joint
    • B29C65/8261—Testing the joint by the use of thermal means
    • 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
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/36—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction
    • B29C65/3604—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the type of elements heated by induction which remain in the joint
    • B29C65/3644—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the type of elements heated by induction which remain in the joint being a ribbon, band or strip
    • 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
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/36—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction
    • B29C65/3604—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the type of elements heated by induction which remain in the joint
    • B29C65/3656—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the type of elements heated by induction which remain in the joint being a layer of a multilayer part to be joined, e.g. for joining plastic-metal laminates
    • 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
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/36—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction
    • B29C65/3672—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the composition of the elements heated by induction which remain in the joint
    • B29C65/3676—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the composition of the elements heated by induction which remain in the joint being metallic
    • B29C65/368—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the composition of the elements heated by induction which remain in the joint being metallic with a polymer coating
    • 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
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/4805—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the type of adhesives
    • B29C65/481—Non-reactive adhesives, e.g. physically hardening adhesives
    • B29C65/4815—Hot melt adhesives, e.g. thermoplastic adhesives
    • 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
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/50—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like
    • B29C65/5007—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like characterised by the structure of said adhesive tape, threads or the like
    • B29C65/5021—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like characterised by the structure of said adhesive tape, threads or the like 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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/50—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like
    • B29C65/5057—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like positioned between the surfaces to be joined
    • 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
    • B29C65/56—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits
    • B29C65/561—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits using screw-threads being integral at least to one of the parts to be joined
    • 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
    • B29C65/72—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by combined operations or combined techniques, e.g. welding and stitching
    • 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
    • B29C66/11—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
    • B29C66/114—Single butt 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
    • B29C66/20—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
    • B29C66/50—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
    • B29C66/54—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles
    • 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
    • B29C66/54—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles
    • B29C66/542—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles joining hollow covers or hollow 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
    • B29C66/7232—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 comprising a non-plastics layer
    • B29C66/72321—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 comprising a non-plastics layer consisting of metals or their alloys
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/002—Investigating fluid-tightness of structures by using thermal means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/38—Investigating fluid-tightness of structures by using light
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M99/00—Subject matter not provided for in other groups of this subclass
    • G01M99/002—Thermal testing
    • 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
    • B29C66/70—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
    • B29C66/71—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 composition of the plastics material of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2705/00—Use of metals, their alloys or their compounds, for preformed parts, e.g. for inserts
    • B29K2705/02—Aluminium
    • 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
    • B29L2031/56—Stoppers or lids for bottles, jars, or the like, e.g. closures
    • B29L2031/565—Stoppers or lids for bottles, jars, or the like, e.g. closures for containers
    • 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

Abstract

【課題】飲料や流動性食品を充填した包装容器上に設けられ、上蓋を開けると同時に内蓋も連動して開放するタイプの開封装置において、正確かつ簡便に融着強度の検査を行う必要がある。【解決手段】上蓋への融着後の所定の時間後、上蓋の表面の、内蓋と上蓋の連結部分の複数の脚部に相当する領域の温度を測定し、すべての温度が、内蓋を上蓋と同時に包装容器から開放するのに十分な融着強度をもたらす所定の温度範囲にある場合には融着強度は十分であると判定し、それ以外の温度範囲の場合には不十分であると判定する。【選択図】図６PROBLEM TO BE SOLVED: To accurately and simply inspect a fusion strength in an unsealing device of a type which is provided on a packaging container filled with a beverage or a fluid food and which simultaneously opens an upper lid and also opens an inner lid. is there. SOLUTION: After a predetermined time after fusion bonding to the upper lid, the temperature of a region of the surface of the upper lid corresponding to a plurality of legs of the connecting portion of the inner lid and the upper lid is measured, and all the temperatures are measured. Is determined to be sufficient when the temperature is within a predetermined temperature range that provides sufficient fusion strength to release from the packaging container at the same time as the upper lid, and is insufficient in other temperature ranges. Judge that there is. [Selection diagram] Fig. 6

Description

本発明は、飲料や流動性食品を充填して密閉された包装容器の同一面に形成された内蓋に一体形成された連結部分の上面と、包装容器から突出した注ぎ口の外周に嵌合した上蓋とを融着し、上蓋を開けると同時に内蓋も連動して開放するタイプの開封装置おいて、上蓋への融着強度の検査方法及び検査装置に関する。   The present invention is fitted to an upper surface of a connecting portion integrally formed with an inner lid formed on the same surface of a packaging container that is filled with a beverage or fluid food and sealed, and an outer periphery of a spout that protrudes from the packaging container. The present invention relates to a method and apparatus for inspecting the fusion strength to an upper lid in an unsealing device of the type in which the upper lid is fused and the inner lid is opened at the same time when the upper lid is opened.

茶類、果実・野菜ジュース、牛乳、ソース等の多くの飲料や流動性食品は、滅菌された紙製のシート状の包装材料から形成される包装容器に封入されて市販されている。この滅菌された包装容器から内容物を外に取り出すための開封装置には、開封するまでは内部の滅菌状態を維持し、かつ開封時には小さな力で容易に開封できることが求められる。そのために、様々な構造の蓋、注ぎ口、連結部分等を備える開封装置が提案されてきた。   Many beverages and fluid foods such as teas, fruit / vegetable juices, milk, sauces, etc. are marketed in a packaging container formed of a sterilized paper sheet-shaped packaging material. The opening device for taking out the contents from the sterilized packaging container is required to maintain the sterilization state inside until it is opened and to easily open it with a small force at the time of opening. To this end, opening devices have been proposed that include lids, spouts, connections, etc. of various constructions.

例えば、包装材料上にプラスチックのモールドで形成されたプルリングと、その周囲を囲む注ぎ口に嵌合した蓋とを備えた包装容器において、最初に蓋を取った後、指でプルリングを引張って内蓋を取り除くことにより包装材料に穴を形成する構造が従来から採用されてきた。しかしこの構造の場合、プルリングが包装材料から取り除かれる時に、包装容器の反動によって内容物が意図せず噴出してしまう場合があった。これを回避するために、本願出願人により、上蓋を開けることにより内蓋も同時に開放されるタイプの開封装置が考案された。（特許文献１）   For example, in a packaging container including a pull ring formed of a plastic mold on a packaging material and a lid fitted around a spout that surrounds the packaging material, after first removing the lid, pulling the pull ring with a finger A structure in which a hole is formed in a packaging material by removing a lid has been conventionally used. However, in the case of this structure, when the pull ring is removed from the packaging material, the content may unintentionally spout due to the recoil of the packaging container. In order to avoid this, the applicant of the present application has devised an opening device of the type in which the inner lid is simultaneously opened by opening the upper lid. (Patent Document 1)

図１にその開封装置１の軸線Ａ方向の断面図を示す。シート状の包装容器１０の開封装置１の形成位置にはプラスチックの注ぎ口１１と、プラスチックの連結部分１２が、その底部が包装容器１０と同一面になるように予めモールドで一体形成されている。この底部には注ぎ口１１の内壁と連結部分１２の間に環状溝１３が形成されて周辺部より厚さが薄くされており、この環状溝１３に囲まれた円形の領域が内蓋１４となる。連結部分１２は、下側が内蓋１４と連続して形成されている2つ以上の脚部１５とその上端部に連続した環状部分１６から構成されている。上蓋２０の内周面には、プラスチックの注ぎ口１１の外周に設けられたらせん状凸部２１と嵌合するらせん状溝２２が、最下部には上蓋２０の回転によって容易に蓋本体から分離する開封表示リング２３が形成されている。また上蓋２０の底面には、上からアルミニウム箔層、ポリエチレン等のプラスチック層から成る積層１９が固着されている。環状部分１６の上面は上蓋２０が閉められた時に積層１９のプラスチック層と当接するようにされている。図２は開封装置１の構成を見やすいように分解して示した概観図である。   FIG. 1 shows a sectional view of the unsealing device 1 in the direction of the axis A. A plastic spout 11 and a plastic connecting portion 12 are integrally formed in advance at a forming position of the opening device 1 of the sheet-shaped packaging container 10 by molding so that a bottom portion thereof is flush with the packaging container 10. .. An annular groove 13 is formed in the bottom portion between the inner wall of the spout 11 and the connecting portion 12, and is thinner than the peripheral portion. A circular region surrounded by the annular groove 13 serves as an inner lid 14. Become. The connecting portion 12 is composed of two or more leg portions 15 whose lower side is continuously formed with the inner lid 14 and an annular portion 16 which is continuous with the upper ends thereof. On the inner peripheral surface of the upper lid 20, a spiral groove 22 that fits with a spiral convex portion 21 provided on the outer circumference of the plastic spout 11, and at the lowermost portion is easily separated from the lid main body by rotation of the upper lid 20. An unsealed display ring 23 is formed. Further, on the bottom surface of the upper lid 20, a laminate 19 made of an aluminum foil layer and a plastic layer such as polyethylene is fixed from above. The upper surface of the annular portion 16 is adapted to abut the plastic layer of the laminate 19 when the top lid 20 is closed. FIG. 2 is a schematic view showing the structure of the unsealing device 1 in a disassembled state for easy understanding.

開封装置１を完成するには、図３の状態から上蓋２０を注ぎ口１１に完全に回し込んで閉めた後、上蓋２０の上面に誘導加熱装置３０を接触させ電流を印加すると、上蓋２０の底の積層１９アルミニウム箔の層が電磁誘導により発熱し、その下のプラスチック層を溶かし、これにより上蓋２０の底部と環状部分１６が融着して固定される（図４）。固着された後、上蓋２０を回転させ開けると環状部分１６、脚部１５、内蓋１４が一体形成された連結部分１２が上蓋２０とともに容器から切り離され、内容物を外に注ぐことが可能になる（図５）。   In order to complete the unsealing device 1, the upper lid 20 is completely turned into the spout 11 from the state shown in FIG. 3 and closed, and then the induction heating device 30 is brought into contact with the upper surface of the upper lid 20 to apply an electric current. The bottom layer of laminated 19 aluminum foil generates heat due to electromagnetic induction and melts the plastic layer below it, which causes the bottom portion of the top lid 20 and the annular portion 16 to be fused and fixed (FIG. 4). After being fixed, when the upper lid 20 is rotated and opened, the connecting portion 12 in which the annular portion 16, the leg portion 15 and the inner lid 14 are integrally formed is separated from the container together with the upper lid 20, and the contents can be poured to the outside. (Fig. 5).

しかし、この上蓋２０と環状部分１６の誘導加熱による融着工程では、製造時の状況によっては、融着強度にばらつきが生じ、上蓋２０を取り去っても連結部分１２が容器に取り残され、内蓋が開かない、または内蓋の一部しか開かない場合があった。従って、融着工程の後に開封装置の接着強度を個々の包装容器ごとに検査することが望ましい場合があった。   However, in the fusion process of the upper lid 20 and the annular portion 16 by induction heating, the fusion strength varies depending on the manufacturing conditions, and even if the upper lid 20 is removed, the connecting portion 12 is left in the container and the inner lid is removed. Sometimes did not open or only part of the inner lid opened. Therefore, it may be desirable to inspect the adhesive strength of the unsealing device for each individual packaging container after the fusing step.

また、別の従来技術として、樹脂ボトル（ペットボトル）用の開封装置において、上蓋の底面と注ぎ口の上面とをアルミニウム箔層とプラスチック層の積層を用いて誘導加熱により融着させ、融着の程度、融着状態の一様性を赤外線カメラにより赤外線の熱画像として取り込み、画像検査処理装置で良好な接着状態の熱画像と比較することにより、上蓋のシールの状態が良好かどうかを検査する方法が特許文献２に開示されている。それによれば、上蓋の表面の熱画像において、上蓋と融着する注ぎ口の上端部のドーナッツ状のパターンがきれいに観測されることが良好なシールの条件であると結論されている。   As another conventional technique, in an unsealing device for a resin bottle (plastic bottle), the bottom surface of the upper lid and the top surface of the spout are fused by induction heating using a laminate of an aluminum foil layer and a plastic layer, and then fused. Inspecting whether the sealing condition of the top lid is good by capturing the degree and the uniformity of the fusion state as an infrared thermal image with an infrared camera and comparing it with a thermal image of a good adhesion state with an image inspection processing device. A method of doing so is disclosed in Patent Document 2. It is concluded that in the thermal image of the surface of the top lid, a good donut-like pattern at the upper end of the spout that fuses with the top lid is clearly observed as a condition for good sealing.

特表２０１７‐５０４５３４号公報Special table 2017-504534 特開２００２−３１８２１３号公報JP, 2002-318213, A

しかしながら、本発明を適用する開封装置では、内蓋と上蓋の間に連結部分を有し、連結部分によって上蓋に連結した内蓋も上蓋の開放と同時に取り去る必要があるため、融着された連結部分の上面と上蓋の間は、特許文献２の場合よりも大きな融着強度が必要となり、かつ精度よく上蓋と内蓋を連結する必要がある。また、特許文献２に係る樹脂ボトルのキャップと、特許文献１に係る紙製のシート状の包装材料から形成される包装容器の開封装置は全く異なる技術分野であり、後述するように特許文献２による検査方法をそのまま本発明を適用する開封装置に用いることはできない。   However, in the unsealing device to which the present invention is applied, since the connecting portion is provided between the inner lid and the upper lid, and the inner lid connected to the upper lid by the connecting portion also needs to be removed at the same time when the upper lid is opened, the fusion-bonded connection is performed. Greater fusion strength is required between the upper surface of the portion and the upper lid than in the case of Patent Document 2, and it is necessary to accurately connect the upper lid and the inner lid. Further, the cap of the resin bottle according to Patent Document 2 and the unsealing device for the packaging container formed from the sheet-shaped packaging material of paper according to Patent Document 1 are completely different technical fields, and as will be described later, Patent Document 2 The inspection method according to (3) cannot be used as it is for the opening device to which the present invention is applied.

本発明の目的は、内蓋と一体形成された連結部分の上面と上蓋とを融着し、上蓋を開けると同時に内蓋も連動して開放するタイプの開封装置の融着状態を、正確かつ簡便に検査を行う方法、及び検査装置を提供することにある。   An object of the present invention is to fuse the upper surface of the connecting portion integrally formed with the inner lid and the upper lid, and to accurately and accurately determine the fused state of the opening device of the type in which the upper lid is opened and the inner lid is also opened at the same time. An object of the present invention is to provide a method for easily performing inspection and an inspection device.

本発明による開封装置の融着強度の検査方法では、上蓋の底面に固定されたアルミニウム箔／プラスチック積層を、上蓋の上側に配置した電磁誘導加熱装置によってアルミニウム箔層に電磁誘導で熱を発生させ、その下層のプラスチックと、連結部分の最上部の環状部分とを融着させた後、赤外線カメラを用いて上蓋表面の環状部分領域の温度分布を赤外線の熱画像として取り込み、これを画像処理装置により上蓋表面の温度分布をカラーで表示する。本発明者は、この上蓋表面の温度分布と融着強度との関係を詳細に検討した結果、環状部分領域の温度パターンの内、特に環状部分と内蓋を機械的に連結している脚部の領域の温度によって上蓋の融着強度を判定することが可能であることを見出した。   In the method for inspecting the fusion strength of the opening device according to the present invention, the aluminum foil / plastic laminate fixed to the bottom surface of the upper lid is generated by electromagnetic induction in the aluminum foil layer by the electromagnetic induction heating device arranged on the upper side of the upper lid. After fusing the lower layer plastic and the uppermost annular part of the connecting part, the temperature distribution of the annular part region of the upper lid surface is captured as an infrared thermal image using an infrared camera, and this is image processing device. Displays the temperature distribution on the upper lid surface in color. As a result of a detailed study of the relationship between the temperature distribution on the surface of the upper lid and the fusion strength, the present inventor found that the leg portion that mechanically connects the annular portion and the inner lid, in particular, of the temperature pattern of the annular portion region. It was found that it is possible to determine the fusion bonding strength of the upper lid by the temperature of the region.

本発明による開封装置の融着強度の検査方法は、
飲料や流動性食品を充填して密閉された包装容器から突出した注ぎ口の底部に、包装容器と同一面に形成された内蓋と、上記注ぎ口の外周に嵌合する上蓋と、上蓋の底面に接着されたアルミニウム箔層とプラスチック層の積層と、上記内蓋と一体形成され内蓋から上蓋方向に延在した複数の脚部とこの複数の脚部と連結し上記積層と当接する環状部分とから成る連結部分とを備え、上記プラスチック層を上記アルミニウム箔層の誘導加熱により上蓋に融着させることにより上記内蓋が上記連結部分を介して上蓋と結合され、上蓋を開けると同時に内蓋も包装容器から開放される機能を有した開封装置において、
融着終了後の所定の時間後、上記上蓋の表面の上記複数の脚部に相当するそれぞれの領域の温度を測定するステップと、複数の脚部に相当する領域のすべての温度が、所定の温度範囲にある場合には、融着強度が十分であると判定し、それ以外の温度範囲の場合には不十分であると判定するステップとを含む。なお、本発明における所定の温度範囲は、内蓋を上蓋と同時に包装容器から開放するのに十分な融着強度をもたらす温度範囲である。 The method for inspecting the fusion strength of the opening device according to the present invention is
At the bottom of the spout that protrudes from the sealed packaging container filled with a beverage or fluid food, an inner lid formed on the same surface as the packaging container, an upper lid that fits the outer periphery of the spout, and an upper lid. A stack of an aluminum foil layer and a plastic layer adhered to the bottom surface, a plurality of legs that are integrally formed with the inner lid and extend from the inner lid toward the upper lid, and an annular shape that is connected to the plurality of legs and abuts on the above-mentioned laminate The inner lid is joined to the upper lid through the connecting portion by fusing the plastic layer to the upper lid by induction heating of the aluminum foil layer, and the inner lid is opened at the same time when the upper lid is opened. In the opening device that also has the function of opening the lid from the packaging container,
After a predetermined time after the completion of fusion bonding, a step of measuring the temperature of each region corresponding to the plurality of legs on the surface of the upper lid, and all the temperatures in the regions corresponding to the plurality of legs are equal to each other. When the temperature is within the temperature range, it is determined that the fusion bonding strength is sufficient, and when the temperature is outside the temperature range, the step is determined to be insufficient. In addition, the predetermined temperature range in the present invention is a temperature range that provides sufficient fusion strength to open the inner lid from the packaging container simultaneously with the upper lid.

また、上記所定の温度範囲は、上蓋と同時に内蓋も開放された複数の開封装置について予め測定された温度のデータから決定される。   Further, the predetermined temperature range is determined from temperature data previously measured for a plurality of opening devices in which the inner lid and the inner lid are opened at the same time.

上記上蓋の表面の脚部に相当する領域の温度の測定は、上蓋の表面の全体を赤外線カメラで撮影して得られた温度分布を、所定の温度範囲、所定の温度範囲より高い温度範囲、所定の温度範囲より低い温度範囲の少なくとも３領域に区別してイメージ化し、複数の脚部に相当するそれぞれの領域の温度がすべて所定の温度範囲にあるかどうかを判定する。   Measurement of the temperature of the region corresponding to the legs of the surface of the upper lid, the temperature distribution obtained by photographing the entire surface of the upper lid with an infrared camera, a predetermined temperature range, a temperature range higher than a predetermined temperature range, An image is made by distinguishing at least three regions of a temperature range lower than the predetermined temperature range, and it is determined whether the temperatures of the respective regions corresponding to the plurality of legs are all within the predetermined temperature range.

あるいは、赤外放射温度計により上蓋の表面の上記複数の脚部の位置の温度を測定し、測定温度がすべて上記所定の温度範囲に入っているかどうかを判定する。   Alternatively, the temperature at the positions of the plurality of legs on the surface of the upper lid is measured by an infrared radiation thermometer, and it is determined whether all the measured temperatures are within the predetermined temperature range.

本発明は上蓋の融着強度の判定を行うための検査装置も提供する。
検査装置は、温度を測定する手段として、上蓋の表面の全体を撮影する赤外線カメラを備え、測定した温度の分布を所定の温度範囲、所定の温度範囲より高い温度範囲、所定の温度範囲より低い温度範囲の少なくとも３領域に区別してイメージ化する画像処理装置を含む。
あるいは温度を測定する手段として、上蓋の表面の上記複数の脚部の位置の温度を測定する赤外放射温度計を備える。 The present invention also provides an inspection device for determining the fusion strength of the upper lid.
The inspection device is provided with an infrared camera for photographing the entire surface of the upper lid as a means for measuring the temperature, and the distribution of the measured temperature is within a predetermined temperature range, a temperature range higher than the predetermined temperature range, and a temperature lower than the predetermined temperature range. The image processing apparatus includes an image processing apparatus that distinguishes and images in at least three regions of the temperature range.
Alternatively, as a means for measuring the temperature, an infrared radiation thermometer for measuring the temperature at the positions of the plurality of legs on the surface of the upper lid is provided.

また、本発明の検査装置は、上蓋と同時に内蓋も開放された複数の開封装置について測定された温度のデータに基づいて予め決定された所定の温度範囲を記憶する記憶部、及び上記複数の脚部に相当するそれぞれの領域の温度がすべて上記所定の温度範囲にあるかどうか比較する比較部と、それにより融着強度を判定する判定部を含む。   In addition, the inspection device of the present invention includes a storage unit that stores a predetermined temperature range determined in advance based on temperature data measured for a plurality of opening devices in which the inner lid and the inner lid are also opened, and the plurality of the above-mentioned plurality of opening devices. It includes a comparison unit that compares whether or not the temperatures of the respective regions corresponding to the legs are all within the predetermined temperature range, and a determination unit that determines the fusion strength by this.

本発明の検査方法によれば、上蓋と内蓋との融着強度の良否を正確かつ簡便に検査することができる。さらに本発明の検査方法では、脚部領域の温度を測定すればよいので、脚部領域以外の画像処理を省略することもでき、従来よりもさらに検査の迅速化、検査装置の簡略化、小型化が可能となる。   According to the inspection method of the present invention, the quality of the fusion bonding strength between the upper lid and the inner lid can be inspected accurately and easily. Further, in the inspection method of the present invention, since the temperature of the leg region may be measured, the image processing in the region other than the leg region can be omitted, and the inspection can be performed faster than before, the inspection apparatus can be simplified, and the size can be reduced. Can be realized.

図１は本発明を適用する包装容器の開封装置の縦断面を示す図である。FIG. 1 is a view showing a vertical cross section of a packaging container opening device to which the present invention is applied. 図２は開封装置の構成を示す分解図である。FIG. 2 is an exploded view showing the configuration of the unsealing device. 図３は開封装置の上蓋を閉める前の状態を示す概観図である。FIG. 3 is a schematic view showing a state before the upper lid of the opening device is closed. 図４は開封装置の上蓋を閉めた後、電磁誘導加熱装置を接触させ加熱している状態を示す図である。開封装置の部分のみ断面図で示す。FIG. 4 is a view showing a state in which the electromagnetic induction heating device is brought into contact with and heating after closing the upper lid of the opening device. Only a part of the opening device is shown in a sectional view. 図５は開封装置の連結部分を融着した後、上蓋を開放した状態を示す外観図である。FIG. 5 is an external view showing a state in which the upper lid is opened after the connecting portion of the opening device is fused. 図６は開封装置の連結部分を融着した後の、上蓋の上面を赤外線カメラにより撮影した温度部分を模式的に示す図である。FIG. 6 is a diagram schematically showing a temperature portion obtained by photographing the upper surface of the upper lid with an infrared camera after fusing the connection portion of the opening device.

上述の、連結部分１２を備えた注ぎ口１１に上蓋２０を自動で装着して開封装置１の作製を完了した後、上蓋２０の上面から電磁誘導加熱装置３０を接触、あるいは非接触の状態で内部のコイルに電流を流して電磁誘導によりアルミニウム箔層で熱を発生させ、その下層のプラスチック層と連結部分１２の最上部の環状部分１６とを融着させる。そして次の段階で、所定の短い時間の後、市販の赤外線カメラを用いてその上蓋２０の表面の温度分布を赤外線の熱画像として取り込み、これを画像処理装置により温度分布を所定のカラーでイメージ化し、ディスプレイに表示する。カラー化する際は、温度範囲を少なくとも最適温度範囲、最適温度範囲より高い温度範囲、最適温度範囲より低い温度範囲の少なくとも３段階に区別する。後述のように、最適温度範囲は十分な融着強度が得られる温度範囲であり、その他の範囲は不十分な融着強度しか得られない温度範囲である。   After the upper lid 20 is automatically attached to the spout 11 provided with the connecting portion 12 to complete the production of the opening device 1, the electromagnetic induction heating device 30 is contacted or not contacted with the upper surface of the upper lid 20. A current is passed through the internal coil to generate heat in the aluminum foil layer by electromagnetic induction, and the lower plastic layer and the uppermost annular portion 16 of the connecting portion 12 are fused. Then, in the next step, after a predetermined short time, the temperature distribution of the surface of the upper lid 20 is captured as an infrared thermal image using a commercially available infrared camera, and the temperature distribution is imaged in a predetermined color by an image processing device. And display it on the display. When colorizing, the temperature range is divided into at least three stages of at least an optimum temperature range, a temperature range higher than the optimum temperature range, and a temperature range lower than the optimum temperature range. As described below, the optimum temperature range is a temperature range in which sufficient fusion strength is obtained, and the other ranges are temperature ranges in which insufficient fusion strength is obtained.

図６は、このようにしてイメージ化した上蓋２０表面の温度分布のパターンを模式的に示した図である。図６では温度の違いを色ではなく網目の濃淡の違いで表わしている。点線は上蓋２０の外周と脚部１５に相当する箇所を示している。   FIG. 6 is a diagram schematically showing the pattern of the temperature distribution on the surface of the upper lid 20 imaged in this way. In FIG. 6, the difference in temperature is represented not by the color but by the shade of the mesh. Dotted lines indicate the outer periphery of the upper lid 20 and the portions corresponding to the legs 15.

図６の（Ａ）〜（Ｅ）に示すように、環状部分１６に相当する領域はその周辺よりも温度が高くなり、それを反映してリング状の温度の高い領域が見られた。そして、積層１９に欠けがある場合、積層１９と上蓋２０間に異物が挟まっている場合、積層１９と上蓋２０の位置ずれが生じている場合等に、環状部分の温度に不均一性が見られた。しかし、環状部分１６の領域の温度がほぼ一様であっても、（Ａ）〜（Ｅ）に示すようにその温度自体にはばらつきが生じる場合があることが分かった。これはアルミニウム箔／プラスチック積層１９と上蓋２０との密着性、あるいは上蓋２０の注ぎ口１１への締め付け強度の違いによると考えられる。また環状部分１６の領域の内、脚部１５が存在している箇所に相当する部分は、その他のリング状部分よりも温度が低い傾向が見られた。これは脚部１５があるために、その他の領域に比べて熱が逃げやすいことに起因している。   As shown in (A) to (E) of FIG. 6, the temperature of the region corresponding to the annular portion 16 was higher than that of the periphery thereof, and a ring-shaped region of high temperature was observed reflecting this. When the stack 19 is chipped, when foreign matter is sandwiched between the stack 19 and the upper lid 20, or when the stack 19 and the top lid 20 are misaligned, the temperature of the annular portion is not uniform. Was given. However, it was found that even if the temperature of the region of the annular portion 16 is substantially uniform, the temperature itself may vary as shown in (A) to (E). It is considered that this is due to the adhesion between the aluminum foil / plastic laminate 19 and the upper lid 20, or the difference in the fastening strength of the upper lid 20 to the spout 11. Further, in the region of the annular portion 16, the portion corresponding to the portion where the leg portions 15 exist tended to have a lower temperature than the other ring-shaped portions. This is because heat is apt to escape as compared with other regions due to the presence of the legs 15.

本発明では、上蓋２０の開放と同時に内蓋１４も包装容器１０から開放した、すなわち、十分な融着強度を有していた良品サンプルの、上述のリング部分の温度分布のパターンとその温度を数多くのサンプルについて計測し、それらのデータと融着強度との関連を検討した。その結果、図６（Ａ）、図６（Ｂ）、図６（Ｃ）のような場合には十分な融着強度が得られているのに対して、図６（Ｄ）、図６（Ｅ）の場合は融着強度が不十分であるという結果が得られた。即ち、リング部分の温度がいかに均一であっても、図６（Ｄ）、図６（Ｅ）のように脚部領域の温度が上述の最適温度範囲に入っていない場合には融着強度は不十分であった。これに対して、図６（Ａ）、図６（Ｂ）、図６（Ｃ）の場合のように脚部領域の温度が最適温度範囲に入っていれば、リング部分のその他の領域の温度が最適温度範囲に入っていなくても、あるいは温度に不均一性があっても、十分な融着強度が得られていた。従って、本発明の検査方法では、環状部分１６に相当する領域の温度全体ではなく、その領域に含まれる複数（本実施例では２本）の脚部１５に相当する２箇所の狭い領域（図６（Ａ）〜（Ｅ）のリング部分の上下に位置する点線で囲まれた領域）の温度が最適温度範囲にあるかどうかを判定する。上述の試験に基づいて得られた、十分な融着強度が得られた温度範囲が最適温度範囲であり、これを所定の温度範囲として画像処理装置内の記憶部に予め記憶しておき、検査時には脚部領域の温度をこの所定の温度範囲と比較して判断すればよく、リング部全体の温度分布パターンを、予め記憶した基準のパターンと比較して判断する必要はない。   In the present invention, the pattern of the temperature distribution of the ring portion and the temperature thereof in the non-defective sample in which the upper lid 20 is opened and the inner lid 14 is also opened from the packaging container 10 at the same time, that is, the sample has a sufficient fusion strength. A large number of samples were measured, and the relationship between those data and the fusion strength was examined. As a result, in the cases shown in FIGS. 6A, 6B, and 6C, sufficient fusion strength is obtained, while in FIGS. In the case of E), the result that the fusion strength was insufficient was obtained. That is, no matter how uniform the temperature of the ring portion is, if the temperature of the leg region is not within the above-mentioned optimum temperature range as shown in FIGS. 6D and 6E, the fusion strength is It was insufficient. On the other hand, if the temperature of the leg region is within the optimum temperature range as in the case of FIGS. 6A, 6B, and 6C, the temperature of the other regions of the ring portion Was not within the optimum temperature range, or even if the temperature was non-uniform, sufficient fusion strength was obtained. Therefore, in the inspection method of the present invention, not the entire temperature of the region corresponding to the annular portion 16 but the two narrow regions corresponding to the plurality of (two in this embodiment) leg portions 15 included in the region (Fig. 6 (A) to (E), it is determined whether or not the temperatures of the areas surrounded by the dotted lines above and below the ring portion are within the optimum temperature range. Obtained based on the above test, the temperature range in which sufficient fusion strength was obtained is the optimum temperature range, which is stored in advance in the storage unit in the image processing apparatus as a predetermined temperature range, and the inspection is performed. Sometimes, the temperature of the leg region may be compared with the predetermined temperature range to determine the temperature, and it is not necessary to determine the temperature distribution pattern of the entire ring portion by comparison with a reference pattern stored in advance.

本発明の一例として、実際に測定して得られた最適温度の範囲は５５〜６０（℃）であった。図６の右下に示した濃度見本で「最適温度」はこの領域を表わし、「＞最適温度」は５５（℃）以上、「＜最適温度」は６０（℃）以下の温度範囲を示している。なお、上蓋２０の表面温度は融着後の経過時間Ｔｍとともに低下するので、最適温度の範囲は当然ながらＴｍに依存する。従って、サンプル計測時のＴｍと、実際の工程で融着後から計測するまでのＴｍとは同じにする必要がある。本実施例ではＴｍ＝２秒で測定した。また、最適温度の範囲は、開封装置の材質、大きさ等に依存する。ここで、開封装置の良品、不良品の判定についてより詳細に説明すると、図６（Ａ）の場合、脚部１５に相当する２箇所の狭い領域が最適温度の範囲にあるため、融着強度が十分であると判定し、すなわち良品であると判定される。なお、図６（Ａ）の場合は、その他のリング部分も最適温度の範囲にある。図６（Ｂ）の場合、脚部１５に相当する２箇所の狭い領域が最適温度の範囲にあり、その他のリング部分は最適温度を超える温度分布を有しているものの、前述の通りに、融着強度が十分であると判定し、すなわち良品であると判定される。図６（Ｃ）の場合、脚部１５に相当する２箇所の狭い領域が最適温度の範囲にあり、その他のリング部分は最適温度を下回る温度分布を有しているが、前述の通りに、融着強度が十分であると判定し、すなわち良品であると判定される。また、図示していないが、脚部１５部分に相当する２箇所の狭い領域が最適温度を超えているか、または最適温度を下回る場合、その他のリング部分が最適温度の範囲にあったとしても、融着強度が不十分であると判定し、すなわち不良品であると判定される。 As an example of the present invention, the optimum temperature range actually measured and obtained was 55 to 60 (° C). In the density sample shown in the lower right of FIG. 6, “optimum temperature” represents this region, “> optimum temperature” is 55 (° C.) or higher, and “<optimum temperature” is 60 (° C) or lower. There is. Since the surface temperature of the upper lid 20 decreases with the elapsed time T m after fusion bonding, the optimum temperature range naturally depends on T m . Therefore, T m at the time of measuring the sample needs to be the same as T m after the fusion in the actual process to the measurement. In this example, the measurement was performed at T m = 2 seconds. Further, the range of the optimum temperature depends on the material, size, etc. of the opening device. Here, the determination of non-defective products and defective products of the unsealing device will be described in more detail. In the case of FIG. 6A, since the two narrow regions corresponding to the leg portions 15 are in the optimum temperature range, the fusion strength is Is determined to be sufficient, that is, it is determined to be a non-defective product. In the case of FIG. 6 (A), the other ring portions are also within the optimum temperature range. In the case of FIG. 6B, two narrow regions corresponding to the legs 15 are in the optimum temperature range, and the other ring portions have a temperature distribution exceeding the optimum temperature, but as described above, It is determined that the fusion strength is sufficient, that is, it is determined as a good product. In the case of FIG. 6C, the two narrow regions corresponding to the legs 15 are in the optimum temperature range, and the other ring parts have a temperature distribution below the optimum temperature. It is determined that the fusion strength is sufficient, that is, it is determined as a good product. In addition, although not shown, when two narrow regions corresponding to the leg portions 15 are above or below the optimum temperature, even if the other ring portions are in the range of the optimum temperature, It is determined that the fusion strength is insufficient, that is, it is determined as a defective product.

本発明の、内蓋１４が連結部分１２を介して上蓋２０へ融着された開封装置１において、上蓋２０への融着の強度を検査する検査装置は、上蓋２０の表面から放射される赤外線の波長及び強度を２次元分布データとして取り込むための赤外線カメラ（非図示）と、これらの２次元波長分布データから上蓋表面の温度分布をイメージ化するための画像処理装置（非図示）を備える。これらは市販の装置を用いることができる。また本発明の検査では、上蓋表面のイメージの中で内蓋１４と上蓋２０を結合している脚部１５の位置を特定する必要があるが、脚部１５の位置が容器ごとに異なる製造工程では、上蓋２０を閉める前に脚部の位置を例えば光学的手段等で予め検出し、画像処理装置に補助データとして供給しておく必要がある。取付ける開封装置１の向きが製造工程で一定で、脚部１５の位置が固定されている場合は、そのような位置検出手段は必要ない。   In the unsealing device 1 of the present invention in which the inner lid 14 is fusion-bonded to the upper lid 20 via the connecting portion 12, the inspection device for inspecting the strength of fusion bonding to the upper lid 20 is an infrared ray radiated from the surface of the upper lid 20. An infrared camera (not shown) for taking in the wavelength and intensity of the above as two-dimensional distribution data, and an image processing device (not shown) for imaging the temperature distribution on the upper lid surface from these two-dimensional wavelength distribution data. A commercially available device can be used for these. Further, in the inspection of the present invention, it is necessary to specify the position of the leg portion 15 connecting the inner lid 14 and the upper lid 20 in the image of the upper lid surface, but the position of the leg portion 15 is different for each container. Then, before closing the upper lid 20, it is necessary to detect the position of the leg portion in advance by, for example, an optical means, and supply it to the image processing apparatus as auxiliary data. When the orientation of the unsealing device 1 to be attached is constant in the manufacturing process and the position of the leg portion 15 is fixed, such position detecting means is not necessary.

赤外線カメラを用いて、２次元波長分布データから上蓋表面の温度分布を計測して脚部１５の位置の温度を測定する代わりに、狭い円形領域の温度を測定可能な赤外放射温度計を用いて脚部の位置の複数の温度を測定し、これらがすべて上記所定の温度範囲に入っているかどうかで融着強度の良否を判定してもよい。この方法では、脚部１５の位置が個々の容器で一定であることが望ましい。複数の脚部１５を同時に測定する場合には、脚部１５の数に相当する複数の赤外放射温度計を用意すればよい。   An infrared radiation thermometer capable of measuring the temperature in a narrow circular region is used instead of measuring the temperature distribution on the upper lid surface from the two-dimensional wavelength distribution data using an infrared camera to measure the temperature at the position of the leg 15. It is also possible to measure a plurality of temperatures at the positions of the legs and judge whether the fusion strength is good or not by checking whether all of them are within the predetermined temperature range. In this method, it is desirable that the position of the legs 15 be constant in each individual container. When simultaneously measuring a plurality of legs 15, a plurality of infrared radiation thermometers corresponding to the number of legs 15 may be prepared.

以上、実施例に基づいて本発明を説明したが、本発明は上記実施の形態に限定されるものではない。本発明は当業者の知識に基づいて本発明の要旨を逸脱しない範囲の様々の改良、設計変更を行うことができ、様々の改良・設計変更があっても本発明に含まれる。   Although the present invention has been described above based on the examples, the present invention is not limited to the above-described embodiments. The present invention can make various improvements and design changes without departing from the gist of the present invention based on the knowledge of those skilled in the art, and even if there are various improvements and design changes, they are included in the present invention.

また、前述の本発明の特徴部分以外の概念については、本出願人の特許文献１に開示された内容を援用する。   Further, for the concept other than the above-mentioned characteristic part of the present invention, the contents disclosed in Patent Document 1 of the present applicant are incorporated.

１ 開封装置
１０ 包装容器
１１ 注ぎ口
１２ 連結部分
１３ 環状溝
１４ 内蓋
１５ 脚部
１６ 環状部分
１９ アルミニウム箔／プラスチック積層
２０ 上蓋
２１ らせん状凸部
２２ らせん状溝
２３ 開封表示リング
３０ 電磁誘導加熱装置
DESCRIPTION OF SYMBOLS 1 Unsealing device 10 Packaging container 11 Spout 12 Connection part 13 Annular groove 14 Inner lid 15 Leg part 16 Annular part 19 Aluminum foil / plastic laminated layer 20 Upper lid 21 Spiral convex part 22 Spiral groove 23 Opening display ring 30 Electromagnetic induction heating device

Claims (8)

包装容器上に設けられた開封装置に用いる検査方法であって、
前記包装容器から突出した注ぎ口の底部に、前記包装容器と同一面に形成された内蓋と、前記注ぎ口の外周に嵌合する上蓋と、前記上蓋の底面に接着されたアルミニウム箔層とプラスチック層の積層と、前記内蓋と一体形成され前記内蓋から前記上蓋方向に延在した複数の脚部と該複数の脚部と連結し前記積層と当接する環状部分とから成る連結部分とを備え、前記プラスチック層を前記アルミニウム箔層の誘導加熱により前記上蓋に融着させることにより前記内蓋が前記連結部分を介して前記上蓋と結合され、上蓋を開けると同時に内蓋も包装容器から開放される機能を有した開封装置において、
前記融着終了後の所定の時間後、前記上蓋の表面の前記複数の脚部に相当するそれぞれの領域の温度を測定するステップと、
前記複数の脚部に相当する領域のすべての温度が、所定の温度範囲にある場合には、前記融着強度が十分であると判定し、それ以外の温度範囲の場合には不十分であると判定するステップと、
を備える検査方法。 An inspection method used for an opening device provided on a packaging container,
At the bottom of the spout that protrudes from the packaging container, an inner lid formed on the same surface as the packaging container, an upper lid that fits the outer periphery of the spout, and an aluminum foil layer adhered to the bottom surface of the upper lid. A laminated portion of plastic layers, and a connecting portion formed of a plurality of leg portions integrally formed with the inner lid and extending from the inner lid toward the upper lid, and an annular portion that is connected to the plurality of leg portions and abuts on the laminated body. The inner lid is joined to the upper lid via the connecting portion by fusing the plastic layer to the upper lid by induction heating of the aluminum foil layer, and the inner lid is opened from the packaging container at the same time when the upper lid is opened. In the opening device having the function to be opened,
After a predetermined time after completion of the fusion, measuring the temperature of each region corresponding to the plurality of legs on the surface of the upper lid,
All the temperatures in the region corresponding to the plurality of legs are in a predetermined temperature range, it is determined that the fusion strength is sufficient, in the case of other temperature range is insufficient And a step of determining
Inspection method comprising. 前記所定の温度範囲が、前記上蓋と同時に前記内蓋も開放された複数の開封装置について予め測定された温度のデータに基づいて決定される、請求項１に記載の融着強度の検査方法。   The fusion strength inspection method according to claim 1, wherein the predetermined temperature range is determined based on temperature data previously measured with respect to a plurality of opening devices in which the inner lid and the inner lid are opened at the same time. 前記上蓋の表面の全体を赤外線カメラで撮影して得られた温度分布を、前記所定の温度範囲、前記所定の温度範囲より高い温度範囲、前記所定の温度範囲より低い温度範囲の少なくとも３領域に区別してイメージ化し、前記複数の脚部に相当するそれぞれの領域の温度がすべて前記所定の温度範囲にあるかどうかを判定する、請求項１または２に記載の融着強度の検査方法。   A temperature distribution obtained by photographing the entire surface of the upper lid with an infrared camera is divided into at least three regions of the predetermined temperature range, a temperature range higher than the predetermined temperature range, and a temperature range lower than the predetermined temperature range. The fusion strength inspection method according to claim 1 or 2, wherein the images are distinguished and imaged, and it is determined whether or not the temperatures of the respective regions corresponding to the plurality of legs are all within the predetermined temperature range. 赤外放射温度計により前記上蓋の表面の前記複数の脚部の位置の温度を測定し、測定温度がすべて前記所定の温度範囲に入っているかどうかを判定する、請求項１または２に記載の融着強度の検査方法。   The infrared radiation thermometer is used to measure the temperatures at the positions of the plurality of legs on the surface of the upper lid, and it is determined whether or not all the measured temperatures are within the predetermined temperature range. Inspection method for fusion strength. 飲料や流動性食品を充填して密閉された包装容器から突出したプラスチックの注ぎ口の底部に、前記包装容器と同一面のプラスチックで形成された内蓋と、前記注ぎ口の外周に嵌合する上蓋と、前記上蓋の底面に接着されたアルミニウム箔層とプラスチック層の積層と、前記内蓋と一体形成され前記内蓋から前記上蓋方向に延在した複数の脚部と該複数の脚部と連結し前記積層と当接する環状部分とから成る連結部分とを備え、前記プラスチック層を前記アルミニウム箔層の誘導加熱により前記上蓋に融着させることにより前記内蓋が前記連結部分を介して前記上蓋と結合され、前記上蓋を開けると同時に前記内蓋も前記包装容器から開放される機能を有した開封装置の、前記環状部分と前記上蓋との融着強度を検査するための検査装置であって、
前記融着終了後の所定の時間後に前記上蓋の表面の前記複数の脚部に相当するそれぞれの領域の温度を測定する手段と、
前記環状部分と前記上蓋との融着強度が、前記内蓋を前記上蓋と同時に前記包装容器から開放するのに十分となる所定の温度範囲を予め記憶した記憶部と、
測定した前記複数の脚部に相当する領域の温度と前記所定の温度範囲とを比較する比較部と、
前記複数の脚部に相当する領域の温度がすべて前記所定の温度範囲にあれば前記融着強度は十分であると判定し、それ以外の温度範囲の場合は不十分であると判定する判定部と
を含む検査装置。 At the bottom of the plastic spout that protrudes from the sealed packaging container filled with drinks or fluid foods, fits the inner lid made of plastic on the same surface as the packaging container and the outer periphery of the spout. An upper lid, a laminate of an aluminum foil layer and a plastic layer adhered to the bottom surface of the upper lid, a plurality of leg portions integrally formed with the inner lid and extending from the inner lid toward the upper lid, and the plurality of leg portions And a connecting portion formed of an annular portion that is connected to and comes into contact with the stack, and the inner lid is fused through the connecting portion by fusing the plastic layer to the upper lid by induction heating of the aluminum foil layer. An inspection device for inspecting the fusion bonding strength between the annular portion and the upper lid, which is combined with the opening lid and has a function of opening the inner lid from the packaging container at the same time. ,
Means for measuring the temperature of each region corresponding to the plurality of legs of the surface of the upper lid after a predetermined time after the fusion,
Fusing strength between the annular portion and the upper lid, a storage unit pre-stored a predetermined temperature range sufficient to open the inner lid from the packaging container at the same time as the upper lid,
A comparison unit for comparing the temperature of the region corresponding to the measured plurality of legs and the predetermined temperature range,
The fusion strength is determined to be sufficient if the temperatures of the regions corresponding to the plurality of legs are all within the predetermined temperature range, and is determined to be insufficient for other temperature ranges. Inspection device including and. 前記所定の温度範囲が、前記上蓋と同時に前記内蓋も開放された複数の開封装置について予め測定された温度に基づいて決定され、前記検査装置内の記憶部に記憶された、請求項５に記載の上蓋融着強度の検査装置。   The predetermined temperature range is determined based on temperatures measured in advance for a plurality of opening devices in which the inner lid is also opened at the same time as the upper lid, and is stored in a storage unit in the inspection device. Inspection device for the fusion strength of the upper lid described. 前記温度を測定する手段が、前記上蓋の表面の全体を撮影する赤外線カメラと、前記測定した温度の分布を前記所定の温度範囲、前記所定の温度範囲より高い温度範囲、前記所定の温度範囲より低い温度範囲の少なくとも３領域に区別してイメージ化する画像処理装置を含む、請求項５または６に記載の検査装置。   The means for measuring the temperature is an infrared camera for photographing the entire surface of the upper lid, and the distribution of the measured temperature is the predetermined temperature range, a temperature range higher than the predetermined temperature range, and the predetermined temperature range. The inspection apparatus according to claim 5 or 6, comprising an image processing apparatus that distinguishes and images at least three regions in a low temperature range. 前記温度を測定する手段が、前記上蓋の表面の前記複数の脚部の位置の温度を測定する赤外放射温度計を含む、請求項５または６に記載の検査装置。

The inspection apparatus according to claim 5, wherein the means for measuring the temperature includes an infrared radiation thermometer for measuring the temperature at the positions of the plurality of legs on the surface of the upper lid.

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