CN100594164C - 密封容器 - Google Patents

密封容器 Download PDF

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Publication number
CN100594164C
CN100594164C CN200680029041A CN200680029041A CN100594164C CN 100594164 C CN100594164 C CN 100594164C CN 200680029041 A CN200680029041 A CN 200680029041A CN 200680029041 A CN200680029041 A CN 200680029041A CN 100594164 C CN100594164 C CN 100594164C
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China
Prior art keywords
adjacent
lid
oral area
container body
container
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Expired - Fee Related
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CN200680029041A
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English (en)
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CN101238041A (zh
Inventor
中谷正树
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Kirin Brewery Co Ltd
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Kirin Brewery Co Ltd
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Publication of CN101238041A publication Critical patent/CN101238041A/zh
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D41/00—Caps, e.g. crown caps or crown seals, i.e. members having parts arranged for engagement with the external periphery of a neck or wall defining a pouring opening or discharge aperture; Protective cap-like covers for closure members, e.g. decorative covers of metal foil or paper
    • B65D41/02—Caps or cap-like covers without lines of weakness, tearing strips, tags, or like opening or removal devices
    • B65D41/16—Snap-on caps or cap-like covers
    • B65D41/18—Snap-on caps or cap-like covers non-metallic, e.g. made of paper or plastics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D41/00—Caps, e.g. crown caps or crown seals, i.e. members having parts arranged for engagement with the external periphery of a neck or wall defining a pouring opening or discharge aperture; Protective cap-like covers for closure members, e.g. decorative covers of metal foil or paper
    • B65D41/02—Caps or cap-like covers without lines of weakness, tearing strips, tags, or like opening or removal devices
    • B65D41/24—Caps or cap-like covers made of shrinkable material or formed in situ by dipping, e.g. using gelatine or celluloid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D51/00—Making hollow objects
    • B21D51/16—Making hollow objects characterised by the use of the objects
    • B21D51/38—Making inlet or outlet arrangements of cans, tins, baths, bottles, or other vessels; Making can ends; Making closures
    • B21D51/44—Making closures, e.g. caps
    • B21D51/46—Placing sealings or sealing material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/18—Working by laser beam, e.g. welding, cutting or boring using absorbing layers on the workpiece, e.g. for marking or protecting purposes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/20—Bonding
    • B23K26/32—Bonding taking account of the properties of the material involved
    • 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
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/16—Laser beams
    • B29C65/1629—Laser beams characterised by the way of heating the interface
    • B29C65/1654—Laser beams characterised by the way of heating the interface scanning at least 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
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/16—Laser beams
    • B29C65/1677—Laser beams making use of an absorber or impact modifier
    • B29C65/1683—Laser beams making use of an absorber or impact modifier coated on the article
    • 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
    • B29C65/58—Snap connection
    • 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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/76—Making non-permanent or releasable joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—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
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/13—Single flanged joints; Fin-type joints; Single hem joints; Edge joints; Interpenetrating fingered joints; Other specific particular designs of joint cross-sections not provided for in groups B29C66/11 - B29C66/12
    • B29C66/131—Single flanged joints, i.e. one of the parts to be joined being rigid and flanged in the joint area
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—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
    • B29C66/1312—Single flange to flange joints, the parts to be joined being rigid
    • 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
    • B29C66/50—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
    • B29C66/65—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 with a relative motion between the article and the welding tool
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/82—Pressure application arrangements, e.g. transmission or actuating mechanisms for joining tools or clamps
    • B29C66/826—Pressure application arrangements, e.g. transmission or actuating mechanisms for joining tools or clamps without using a separate pressure application tool, e.g. the own weight of the parts to be joined
    • B29C66/8262—Pressure application arrangements, e.g. transmission or actuating mechanisms for joining tools or clamps without using a separate pressure application tool, e.g. the own weight of the parts to be joined using "pressure means" which are associated with at least one of the parts to be joined and remain in or on it
    • 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
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/912—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux
    • B29C66/9121—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature
    • B29C66/91211—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature with special temperature measurement means or methods
    • B29C66/91216—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature with special temperature measurement means or methods enabling contactless temperature measurements, e.g. using a pyrometer
    • 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
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/912—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux
    • B29C66/9131—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the heat or the thermal flux, i.e. the heat flux
    • 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
    • B29C2791/00—Shaping characteristics in general
    • B29C2791/004—Shaping under special conditions
    • B29C2791/009—Using laser
    • 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
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/16—Laser beams
    • B29C65/1603—Laser beams characterised by the type of electromagnetic radiation
    • B29C65/1612—Infrared [IR] radiation, e.g. by infrared lasers
    • B29C65/1616—Near infrared radiation [NIR], e.g. by YAG lasers
    • 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
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/16—Laser beams
    • B29C65/1629—Laser beams characterised by the way of heating the interface
    • B29C65/1635—Laser beams characterised by the way of heating the interface at least passing through one of the parts to be joined, i.e. laser transmission welding
    • 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
    • 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
    • B29C66/73921—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 characterised by the materials of both parts being thermoplastics
    • 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
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/712—Containers; Packaging elements or accessories, Packages
    • B29L2031/7158—Bottles

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Health & Medical Sciences (AREA)
  • Electromagnetism (AREA)
  • Toxicology (AREA)
  • Thermal Sciences (AREA)
  • Plasma & Fusion (AREA)
  • Closures For Containers (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Laser Beam Processing (AREA)

Abstract

本发明的目的在于，在利用激光焊接等热熔合对盖进行密封的饮料、食品用容器等的密封型容器中，赋予较高的夹杂物适应性，提高密封性，并提高容器体和盖的接合强度。本发明的密封容器具有容器体和盖，所述容器体具有口部，在口部的外壁上设置有与该口部的边缘平行的环状肋，在盖的边缘上设置有用于形成与肋贴紧的贴紧部分的环状圈，在比肋更靠近口部的边缘侧的所述口部的外壁上设置有环状凸起或凹陷，在盖的内壁上设置有环状凹陷或凸起，并且使该环状凹陷或凸起位于和在所述盖的边缘上设置的圈之间的间隔比在所述口部上设置的所述环状凸起或凹陷和所述肋之间的间隔略长的部位上，述肋和所述圈贴紧的贴紧部分被热熔合。

Description

密封容器
技术领域
本发明涉及在容器体的口部上安装的盖通过热熔合而被密封的密封容器，尤其涉及该密封容器的口部和盖的结构。
背景技术
在密封容器、例如饮料用容器中，公知有瓶、罐以及塑料容器等各种容器。近年来，从其良好的操作性等便利性的观点出发，罐和塑料容器得到了广泛使用。
关于塑料容器，难以实施卷边接缝工序，所以像饮料用金属罐容器那样进行卷边接缝来密封的塑料容器并未流通。在塑料容器中，最流通的容器是PET(聚对苯二甲酸乙二醇酯)瓶。在PET瓶中，采用将盖拧在瓶口部上的方式作为密封方式。但是，这种盖在整个容器中成为成本大幅提高的主要因素。此外，由于盖主要是由PP(聚丙烯)制的，所以妨碍再利用。
近年来，还在流通一种金属制的、与PET瓶同样采用将盖拧在瓶口部上的方式的瓶形的罐容器。
而且，公开了以金属罐为对象、利用激光焊接对罐进行密封的密封技术(例如参照专利文献1～3。)。
专利文献1：WO02/42196A2号公报
专利文献2：日本特开昭63-194885号公报
专利文献3：日本特开昭61-289932号公报
在尝试通过以激光焊接为首的热熔合对饮料、食品用容器等的密封型容器进行密封时，大多需要在密封时周边环境的液体(例如装置上的壁液)和内装物等被夹在待熔合的表面之间的状态下进行熔合。此时，熔合条件发生变化。在这种熔合条件变化之后，适当的条件范围较广显现为夹杂物适应性较高。并且，在尝试通过激光焊接进行密封时，可得到这种程度的夹杂物适应性的熔合条件至今还未知晓。另外，还完全不知道该如何改变容器的结构、特别是口部和盖的结构等以提高夹杂物适应性。
本发明的发明者发现，在利用激光焊接对例如PET瓶进行密封时，当照射普通的激光光斑，在熔合开始部位开始加热并熔融时，熔合面的夹杂物会在熔合面上朝向远离熔合开始部位的方向移动。其结果是，当激光照射一周并结束熔合时，熔合面积产生显著的偏差，并给密封性和容器体与盖的接合强度带来不良影响。另外，由于加热和熔合产生的压力，使夹杂物以被从熔合面挤出的方式移动。其结果是，可以实质性地完全将夹杂物从熔合面排出，但是由于此时夹杂物从熔合面吸走一定的热量，因此需要调节激光的输出。
发明内容
因此，本发明的目的在于，在通过以激光焊接为首的热熔合进行密封的饮料、食品用容器等密封型容器中，通过改进其口部和盖的结构，对该密封型容器赋予较高的夹杂物适应性。而且，本发明的目的还在于提高密封性，提高容器体和盖之间的接合强度。
本发明的发明者们致力于对上述问题的研究，查明了以下方面对容器的密封很重要：(1)、固定将被熔合的部分，以便在熔合时使夹杂物不向其他熔合部分移动；(2)、形成便于熔合的部位的结构，以使熔合时夹杂物能够向熔合部分以外的部分移动；(3)、实施已将夹杂物带出的热量包括在内的激光照射，并发现了具有反映这些方面的口部和盖的结构的容器，还发现了适当的激光照射方法。即，本发明所述的密封容器具有：容器体，所述容器体具有口部；和盖，所述盖由可塑性材料形成，在封闭所述口部时所述盖自身产生变形，在利用缓和该变形的应力对所述容器体加压的状态下生成贴紧部分，而且该贴紧部分成为封口，所述贴紧部分被热熔合，该密封容器的特征在于，在所述口部的外壁上，设置有与该口部的边缘平行的环状肋，在所述盖的边缘上，设置有形成与所述肋贴紧的贴紧部分的环状圈，在比所述肋更靠近所述口部的边缘侧的所述口部的外壁上，设置有环状凸起或凹陷，在所述盖的内壁上设置有环状凹陷或凸起，并且使该环状凹陷或凸起位于和在所述盖的边缘上设置的圈之间的间隔比在所述口部上设置的所述环状凸起或凹陷和所述肋之间的间隔略长的部位上，所述肋和所述圈贴紧的贴紧部分被热熔合。当将盖安装在容器体上时，贴紧部分在加压状态下相互抵接，所以夹杂物不会进入贴紧部分中。
这是密封容器的一个方式。在该容器的情况下，由于容器上方无遮挡，能够观察到贴紧部分，所以可以通过从上方朝下方照射激光来进行熔合。因此，能够简化激光照射装置。
在本发明所述的密封容器中，包含如下内容：设置有所述盖的内壁面与所述口部的边缘的抵接面，
在所述口部的外壁上设置有与该口部的边缘平行的环状凸起或凹陷，在所述盖的内壁上设置有环状凹陷或凸起，并且使该环状凹陷或凸起位于与所述抵接面之间的间隔比所述口部的边缘与在所述口部上设置的环状凸起或凹陷之间的间隔略短的部位上，在所述口部的外壁上设置的环状凸起或凹陷与在所述盖的内壁上设置的环状凹陷或凸起贴紧的贴紧部分被热熔合。这是密封容器的一个方式。
在本发明所述的密封容器中，包含如下内容：所述盖具有夹持所述口部的边缘的里外面的弯曲部，该弯曲部与所述容器体贴紧的贴紧部分被热熔合。这是密封容器的一个方式。
在本发明所述的密封容器中，优选设置有所述盖的内壁面与所述口部的边缘的抵接面，所述抵接面被热熔合。由此能够提高盖的熔合强度。
在本发明所述的密封容器中优选为，在打开密封之后，当将所述盖再次安装到所述容器体的口部上时，在所述贴紧部分将所述容器体与所述盖相互贴紧到不使内装物漏出的程度。由此得到容器的可再封性。
在本发明所述的密封容器中优选为，被热熔合的所述贴紧部分与所述盖的边缘之间的距离在10mm以下，并且所述盖的邻接边缘的内壁面与所述容器体的外壁面相分离。由此能够在熔合时将沾湿贴紧部分周围的液体排出。
在本发明所述的密封容器中优选为，所述盖和所述容器体用塑料树脂成形。
在本发明所述的密封容器中优选为，所述贴紧部分利用激光焊接法被热熔合。熔合部分和非熔合部分的界限清晰，可实现高精度的熔合。
在本发明所述的密封容器中优选为，所述贴紧部分由吸收激光的材料形成，或者在所述贴紧部分上涂敷有吸收激光的涂料，又或者在所述贴紧部分上配置由吸收激光的材料构成的物体。由此能够使用能量密度小的激光进行熔合。
在本发明所述的密封容器中，在利用激光焊接法进行热熔合时，优选所述盖和所述容器体用聚对苯二甲酸乙二醇酯树脂成形。
本发明的密封容器，通过改进其口部和盖的结构，使其具有较高的夹杂物适应性。从而，通过激光焊接法等热熔合，密封性变高，并且能够使容器体和盖的接合强度处于较高的状态。
附图说明
图1是表示第一实施方式的密封容器的示意图，(a)是将盖安装到容器体上时口部附近的示意纵剖面图，(b)是从A方向观察到的示意外观图，(c)是从B方向观察到的盖的示意立体图。
图2示出了第二实施方式的密封容器的示意图。
图3示出了第三实施方式的密封容器的示意图。
图4示出了第四实施方式的密封容器的示意图。
图5是示出本实施方式的密封容器的制造方法的一个方式的工序图。
标号说明
100、200、300、400：密封容器；
1、61：容器体；
2、16、18：环状凸起；
3、62：盖；
4：贴紧部分；
5、7：边缘；
6：肋；
8：环状圈；
9：口部；
10：环状第二凸起；
11、15、17：环状凹陷；
12：环状第二凹陷；
13：盖的内壁部分；
14：钩挂部；
19：抵接面；
20：弯曲部；
21：分离部分；
23：按压肋的力；
24：盖的内壁面按压边缘的力；
25：弯曲部夹持边缘的里外面的力；
26：抓手；
63a：盖输送装置；
63b：盖供给装置；
64：盖配置装置；
65：激光产生装置；
66：贴紧部分；
70：不良容器排除装置。
具体实施方式
下面示出实施方式，对本发明进行详细说明，但是本发明不仅限于这些记载所作的诠释。首先，参照图1～图4对本实施方式的密封容器进行说明。另外，对同一部件、同一部位标以同一标号。
本实施方式的密封容器的特征在于，该密封容器具有：容器体，所述容器体具有口部；和盖，所述盖由可塑性材料形成，在封闭所述口部时所述盖自身产生变形，在利用缓和该变形的应力对所述容器体加压的状态下生成贴紧部分，而且该贴紧部分成为封口，所述贴紧部分被热熔合。例如盖为带顶面的圆筒形，容器体的口部为圆筒形，盖以从外侧覆盖口部的方式进行安装。此时，盖可以是嵌合式盖，也可以是旋拧式盖。容器体与盖贴紧的贴紧部分在加压状态下始终接触。并且将该贴紧部分作为封口(封じ目)。根据上述结构，不仅内装物不会溢出，还能够从作为贴紧部分的贴紧面上除去内装物或壁液等夹杂物。因此，当贴紧部分被熔合时，贴紧面上没有夹杂物，所以不易产生由于夹杂物的汽化或激光导致的吸热等给熔合带来不良影响的现象。另外，为了使贴紧部分在加压状态下始终接触，在本实施方式的密封容器中，用可塑性材料形成盖，在用盖封闭口部时，盖自身先产生变形，将缓和该变形的应力用作加压的力。下面，列举几个示例对实现该作用的密封容器的实施方式进行说明。当然，本发明不仅限于这些实施方式所作的诠释。
(第一实施方式)
图1是表示第一实施方式的密封容器的示意图。(a)是将盖安装到容器体上时口部附近的示意纵剖面图，(b)是从A方向观察到的示意外观图，(c)是从B方向观察到的盖的示意立体图。在第一实施方式的密封容器100中，在容器体1的口部9的外壁上，设置有与口部9的边缘5平行的环状肋6；在盖3的边缘7上，设置有用于形成与肋6贴紧的贴紧部分4的环状圈8；在比肋6更靠近口部的边缘5侧的口部9的外壁上，设置有环状凸起2；在盖3的内壁上设置有环状凹陷11，并且该环状凹陷11位于其和在盖3的边缘7上设置的圈8之间的间隔比在口部9上设置的环状凸起2和肋6之间的间隔略长的部位上。而且，肋6和圈8的贴紧部分4被热熔合。
在密封容器100中，盖3的内径设计为：在安装时使盖多少从周围夹紧口部9的侧壁。此处，环状凹陷11和圈8之间的间隔形成为比在口部9上设有的环状凸起2和肋6之间的间隔略长。因此，盖3中的环状凹陷11和圈8之间被夹持的部分，由于盖3的夹紧力，如观察图1(a)那样沿垂直方向产生变形而生成压缩应力。由于盖3由可塑性材料形成，所以为了缓和该压缩变形而产生向下方按压圈8的力、即按压肋6的力23。由此，贴紧部分4处于被加压状态。
盖3由可塑性材料形成，但是具体来说是由塑料树脂、金属或者它们的复合材料形成。金属是例如铝、铁或者以它们为主要成分的合金。作为塑料树脂，例如可以是聚对苯二甲酸乙二醇酯树脂(PET)、乙二醇改性聚对苯二甲酸乙二醇酯树脂(PETG)、聚对苯二甲酸丁二醇酯树脂、聚萘二甲酸乙二醇酯树脂、聚乙烯树脂、聚丙烯树脂(PP)、环烯烃共聚物树脂(COC、环烯烃共聚)、离聚物树脂、聚-4-甲基戊烯-1树脂、聚甲基丙烯酸甲酯树脂、聚苯乙烯树脂、乙烯-乙烯醇共聚树脂、丙烯腈树脂、聚氯乙烯树脂、聚偏二氯乙烯树脂、聚酰胺树脂、聚酰胺酰亚胺树脂、聚缩醛树脂、聚碳酸酯树脂、聚砜树脂、或四氟乙烯树脂、丙烯腈-苯乙烯树脂、丙烯腈-丁二烯-苯乙烯树脂。其中，特别优选PET。PET作为饮料·食品用容器的材料有实际使用成果，并且在利用激光焊接法使其熔合时，由于PET对激光没有吸收性，所以可以通过对贴紧部分的贴紧面实施对激光有吸收性的着色来直接加热贴紧面周边。
容器体1由塑料树脂、玻璃、陶瓷、金属或者它们的复合材料形成。其形状优选瓶形。另外，由于通过热熔合对容器进行密封，所以与容器体相比盖无需厚壁。在用塑料树脂形成容器体1和盖3的情况下，使用少的能量就能够将它们接合起来。
在密封容器100中，还在口部9的外壁上的比凸起2更上方的部位设置有环状第二凸起10，在盖3的内壁上设置有第二凹陷12。此处，盖3形成为，接触边缘5的盖3的内壁部分13和第二凹陷12之间的间隔，比边缘5和第二凸起10之间的间隔略短。由此，形成边缘5和内壁部分13的抵接面，该抵接面始终处于被加压状态。因此，也从该抵接面上除去夹杂物，从而不存在夹杂物引起的不良影响，容易进行热熔合。另外，提高了容器体1和盖3的接合强度。
另外，在密封容器100中，为了提高盖3的开封性，设有抓手26。并且，由于容器中施加有内压，为防止盖3飞出，设有针对肋6的钩挂部14。即使万一不经意地使盖3打开了密封，也能够通过钩挂部14防止盖3飞出。
(第二实施方式)
图2示出了第二实施方式所述的密封容器的示意图。示出了将盖安装到容器体上时口部附近的示意纵剖面图。在第二实施方式所述的密封容器200中，在容器体1的口部9的外壁上，设置有与口部的边缘5平行的环状肋6；在盖3的边缘7上，设置有用于形成与肋6贴紧的贴紧部分4的环状圈8；在比肋6更靠近口部9的边缘5侧的口部9的外壁上，设置有环状凹陷15；在盖3的内壁上设置有环状凸起16，并且该环状凸起16位于其和在盖3的边缘7上设置的圈8之间的间隔比在口部9上设置的环状凹陷15和肋6之间的间隔略长的部位上。而且，肋6和圈8的贴紧部分4被热熔合。第二实施方式与第一实施方式的不同点在于，凸起与凹陷之间的关系相反。
在密封容器200中，盖3的内径设计为：在安装时使盖3多少从周围夹紧口部9的侧壁。此处，环状凸起16和圈8之间的间隔形成为比环状凹陷15和肋6之间的间隔略长。因此，盖3中的环状凸起16和圈8之间被夹持的部分，由于盖3的夹紧力，如观察图2那样沿垂直方向产生变形而生成压缩应力。由于盖3由可塑性材料形成，所以为了缓和该压缩变形而产生向下方按压圈8的力、即按压肋6的力23。由此，使贴紧部分4处于被加压状态。
盖3和容器体1的材质与第一实施方式的情况相同。在第二实施方式的密封容器中，可以设置盖3的内壁面和口部9的边缘5的抵接面(未图示)，并使抵接面热熔合。另外，也可以设置抓手(未图示)和钩挂部(未图示)。
(第三实施方式)
图3示出了第三实施方式所述的密封容器的示意图。示出了将盖安装到容器体上时口部附近的示意纵剖面图。在第三实施方式所述的密封容器300中，设置有盖3的内壁面与口部9的边缘5的抵接面19，在口部9的外壁上设置有与口部9的边缘5平行的环状凹陷17。并且，在盖3的内壁面上设置有环状凸起18。另外，在盖3的内壁上设置环状凸起18，该环状凸起18位于其和抵接面19之间的间隔比口部9的边缘5与在口部9上设置的环状凹陷17之间的间隔略短的部位上。而且，在容器体1的外壁上设置的环状凹陷17和在盖3的内壁上设置的环状凸起18的贴紧部分4被热熔合。
在第三实施方式中，与第二实施方式和第一实施方式之间的关系同样，作为第三实施方式的类似方式，也可以是凸起和凹陷的关系相反的方式(未图示)。
在密封容器300中，盖3的内径设计为：在安装时使盖3多少从周围夹紧口部9的侧壁。此处，盖3形成为：使抵接面19和在盖3上设置的环状凸起18之间的间隔，比口部9的边缘5和在口部9上设置的环状凹陷17之间的间隔略短。因此，在盖3中的抵接面19和环状凸起18之间被夹持的部分，由于盖3的夹紧力，如观察图3那样在垂直方向上产生变形而生成拉伸应力。由于盖3由可塑性材料形成，所以为了缓和该拉伸变形而产生了盖3的内壁面按压边缘5的力24，边缘5抵接在盖3的内壁面上。另一方面，盖3的环状凸起18与容器体1的环状凹陷17相互贴紧，该贴紧部分4处于被加压状态。
盖3和容器体1的材质与第一实施方式的情况相同。在第三实施方式的密封容器中可以使抵接面19热熔合。另外，也可以设置抓手(未图示)和钩挂部(未图示)。
(第四实施方式)
图4中示出了第四实施方式的密封容器的示意图。示出了将盖安装到容器体上时口部附近的示意纵剖面图。在第四实施方式所述的密封容器400中，盖3具有夹持容器体1的口部9的边缘5的里外面的弯曲部20，弯曲部20和容器体1贴紧的贴紧部分4被热熔合。
在密封容器400中，弯曲部20由于夹持边缘5的里外面而产生变形，为了缓和该变形而使弯曲部20和容器体1的贴紧部分4处于被加压状态。图4中的标号25示出弯曲部20夹持边缘5的里外面的力。
盖3和容器体1的材质与第一实施方式的情况相同。在第四实施方式的密封容器中也可设置抓手(未图示)和钩挂部(未图示)。
在第一～第四实施方式的密封容器中，打开密封之后，当再次将盖3安装到容器体1的口部9上时，优选在贴紧部分4处将容器体1和盖3相互贴紧到不使内装物漏出的程度。由此得到容器的密封性。在所述实施方式中，贴紧部分4处于被加压状态。为了使该压力状态的压力适度，要调节盖3的壁厚、以及盖3的内径与口部9的外形之间的大小关系，从而能够使内装物不漏出。
在第一～第四实施方式的密封容器中，优选被热熔合的贴紧部分4和盖3的边缘7之间的距离在10mm以下，并且优选盖3的邻接边缘7的内壁面与容器体1的外壁面相分离。例如，在图2中示出C部分的局部放大图来说明。使贴紧部分4和盖3的边缘7之间的距离X在10mm以下，设置盖3的内壁面和容器体1的外壁面相分离的分离部分21。在其他实施方式中同样也可以设置距离X和分离部分21。根据该结构，能够在熔合过程中将沾湿贴紧部分4周围的液体排出。
在第一～第四实施方式的密封容器中，优选通过激光焊接法将贴紧部分4热熔合。与将加热器作为热源进行热熔合的情况相比，熔合部分和非熔合部分的界限清晰，从而可实现高精度的熔合。
在第一～第四实施方式的密封容器中，贴紧部分4可以由吸收激光的材料形成，或者在贴紧部分4上涂敷吸收激光的涂料，或者还可以在贴紧部分4上配置由吸收激光的材料构成的物体。当通过激光焊接法进行熔合时，即使在被熔合物不吸收激光的情况下，也可以通过对贴紧部分的贴紧面实施对激光有吸收性的着色来直接加热贴紧面周边。为了使贴紧部分由吸收激光的材料形成，例如使塑料树脂中含有染料或者颜料来形成容器体或盖体或者这两者。为了将吸收激光的涂料涂敷在贴紧部分4上，例如通过各种印刷法来印刷该涂料。配置在贴紧部分4上的、吸收激光的材料，例如是在与容器体或者盖的材料相同的材料上涂敷涂料、或者是含有染料或颜料的材料。通过这样设置吸收激光的吸收部，能够提高激光的吸收率，使用较少的能量就能够进行激光焊接。染料或者颜料例如是金属材料、陶瓷、或有机颜料，是用于吸收激光的材料。优选根据吸收部对激光的吸收程度来调节激光的波长、激光强度和激光扫描速度。
下面，参照图5对本实施方式的密封容器的密封方法进行说明。图5是示出本实施方式的密封容器的制造方法的一个方式的工序图。在步骤S1中，将填充了内装物的容器体61通过传送带等输送装置(未图示)导入激光焊接机。此时，在内装物发泡的情况下进行消泡，进行二氧化碳气吹扫或者氮气吹扫。
接下来在步骤S2中，通过盖输送装置63a将盖62输送到盖供给装置63b。盖供给装置63b对每个容器体61供给一个盖62到其口部。
接下来在步骤S3中，利用盖配置装置64将盖62安装到容器体61的口部上。由此在盖和容器体贴紧的贴紧部分，使贴紧面处于被加压状态。
接下来在步骤S4中，利用激光产生装置65向容器体61和盖62贴紧的贴紧部分66照射激光。此处，在以点状或线状照射激光、并以容器61为中心轴线自转一周的过程中，能够使整个贴紧部分66熔合(容器61的自转装置未图示)。
在照射激光时，优选通过监视激光的输出来监视激光强度。另外，优选通过利用光敏传感器或红外线传感器等温度传感器来监视发光或者发热，从而监视激光的照射位置。优选通过利用光敏传感器或温度传感器来监视发光或者发热，从而监视塑料的焊接。也可以兼用CCD等图像传感器。
装入激光产生装置65中的激光振荡元件例示有半导体激光器、二氧化碳激光器等气体激光器、YAG激光器，根据进行激光焊接的容器体和盖的材质、激光照射移动速度、照射点形状等各种参数适当地进行选择。激光的波长例如为800-1000nm。对塑料容器和瓶形状的罐容器进行激光焊接时优选半导体激光器。向贴紧部分照射的激光的能量密度优选每1cm2的熔合面积例如为150J。从而不产生热变形就能够完成熔合。
此处，为了提高激光的吸收率，优选设置在贴紧部分设置激光吸收部的工序。即使是机械性接触沿着吸收部变得复杂那样的轮廓或者起伏，也能够高精度地进行激光焊接。这是因为激光可以缩小照射点，主要是在设有吸收部处进行焊接。该工序只要是在激光照射之前则什么时候都可以，可以是在步骤S1之前、步骤S1、步骤S2或者步骤S3中的任意步骤之间。另外，由于该工序在焊接对激光不具有吸收带的材料时有效，所以不是必要工序。也就是说，在如一部分是彩色瓶那样接合部分可吸收激光的情况下，仅通过照射激光就能够进行激光焊接。
接下来在步骤S5中，利用不良容器排除装置70，将密封不良的容器排除。优选基于上述监视结果和图像检查器(未图示)的外观检查结果进行密封不良的判断。
在现有的金属罐的卷边接缝工序中，在实际进行卷边接缝工序的时候难以判断是否对容器进行了适当的密封。因此，虽然在制造开始之前的检查结果良好，但是在卷边接缝工序中产生了密封不良的情况下，要在实际产生密封不良后经过很长时间才会发现密封不良。在这样的情况下，极大地增大了必须废弃的容器数量，极度延长了生产装置的停止时间。另一方面，根据本实施方式的密封容器的制造方法，由于能够在极短的时间内检测出是否适当地进行了焊接工序，所以金属罐的卷边接缝工序不会有上述缺陷。
在本发明中，也能够使用如下的焊接法来代替激光焊接法。即，利用脉冲封口法、高频焊接法、振动焊接法、旋转焊接法、超声波焊接法、热风焊接法或热封法将贴紧部分熔合来制造密封容器的情况。
脉冲封口法是在加热器中极速地通入强电流、对贴紧部分进行加热焊接的方法。高频焊接法是将高频电流吸收在介电常数和介质损耗因数大的贴紧部分中对贴紧部分进行内部加热的焊接法。使用介电常数、介质损耗因数大的薄膜。振动焊接法是代替旋转而摩擦贴紧部分使其发热、进行熔融接合的焊接法。旋转焊接法是使贴紧部分旋转、摩擦，借助于摩擦热进行熔融焊接的方法。超声波焊接法是施加超声波振动能量而使贴紧部分熔融接合的焊接法。热风焊接法是向加热后的加热器中送入空气或气体，并将其吹向贴紧部分进行焊接的方法。热封法是在将贴紧部分夹持在加热板之间的状态下对贴紧部分加压加热来进行焊接的方法。从而，能够对应容器的形状适当地选择使用各种焊接法。

Claims (8)

1、一种密封容器，
该密封容器具有：
容器体，所述容器体具有口部；和
盖，所述盖由可塑性材料形成，在封闭所述口部时所述盖自身产生变形，在利用缓和该变形的应力对所述容器体加压的状态下生成贴紧部分，而且该贴紧部分成为封口，
所述贴紧部分被热熔合，
其特征在于：
在所述口部的外壁上，设置有与该口部的边缘平行的环状肋，
在所述盖的边缘上，设置有用于形成与所述肋贴紧的贴紧部分的环状圈，
在比所述肋更靠近所述口部的边缘侧的所述口部的外壁上，设置有环状凸起或凹陷，
在所述盖的内壁上设置有环状凹陷或凸起，并且使该环状凹陷或凸起位于和在所述盖的边缘上设置的圈之间的间隔比在所述口部上设置的所述环状凸起或凹陷和所述肋之间的间隔略长的部位上，
所述肋和所述圈贴紧的贴紧部分被热熔合。
2、根据权利要求1所述密封容器，其特征在于，
设置有所述盖的内壁面与所述口部的边缘的抵接面，
所述抵接面被热熔合。
3、根据权利要求1所述的密封容器，其特征在于，
在打开密封之后，当将所述盖再次安装到所述容器体的口部上时，在所述贴紧部分将所述容器体与所述盖相互贴紧到不使内装物漏出的程度。
4、根据权利要求1所述的密封容器，其特征在于，
被热熔合的所述贴紧部分和所述盖的边缘之间的距离在10mm以下，并且所述盖的邻接边缘的内壁面与所述容器体的外壁面相分离。
5、根据权利要求1所述的密封容器，其特征在于，
所述盖和所述容器体用塑料树脂成形。
6、根据权利要求1所述的密封容器，其特征在于，
所述贴紧部分利用激光焊接法被热熔合。
7、根据权利要求1所述的密封容器，其特征在于，
所述贴紧部分由吸收激光的材料形成，或者在所述贴紧部分上涂敷有吸收激光的涂料，或者在所述贴紧部分上配置由吸收激光的材料构成的物体。
8、根据权利要求1所述的密封容器，其特征在于，
所述盖和所述容器体用聚对苯二甲酸乙二醇酯树脂成形。
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