JP2007269353A - Longitudinal seal tape sealing mechanism, longitudinal sealing mechanism, and liquid paper-made container forming device - Google Patents

Longitudinal seal tape sealing mechanism, longitudinal sealing mechanism, and liquid paper-made container forming device Download PDF

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Publication number
JP2007269353A
JP2007269353A JP2006096576A JP2006096576A JP2007269353A JP 2007269353 A JP2007269353 A JP 2007269353A JP 2006096576 A JP2006096576 A JP 2006096576A JP 2006096576 A JP2006096576 A JP 2006096576A JP 2007269353 A JP2007269353 A JP 2007269353A
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Japan
Prior art keywords
packaging material
edge
heat
vertical
sealing mechanism
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2006096576A
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Japanese (ja)
Inventor
Shigekazu Miyagawa
茂和 宮川
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Nippon Paper Pak Co Ltd
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Nippon Paper Pak Co Ltd
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Publication date
Application filed by Nippon Paper Pak Co Ltd filed Critical Nippon Paper Pak Co Ltd
Priority to JP2006096576A priority Critical patent/JP2007269353A/en
Publication of JP2007269353A publication Critical patent/JP2007269353A/en
Pending legal-status Critical Current

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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
    • B29C65/48—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
    • B29C65/5042—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 covering both elements 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
    • B29C65/10—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using hot gases (e.g. combustion gases) or flames coming in contact with 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/001—Joining in special atmospheres
    • B29C66/0012—Joining in special atmospheres characterised by the type of environment
    • B29C66/0018—Joining in special atmospheres characterised by the type of environment being sterile
    • 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
    • B29C66/02—Preparation of the material, in the area to be joined, prior to joining or welding
    • B29C66/024—Thermal pre-treatments
    • B29C66/0242—Heating, or preheating, e.g. drying
    • 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
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B29C66/432—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms
    • B29C66/4322—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms by joining a single sheet to itself
    • 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
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/49—Internally supporting the, e.g. tubular, article during joining
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—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
    • B29C66/72327—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 natural products or their composites, not provided for in B29C66/72321 - B29C66/72324
    • B29C66/72328—Paper
    • 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
    • B29C66/834—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools moving with the parts to be joined
    • B29C66/8341—Roller, cylinder or drum types; Band or belt types; Ball types
    • B29C66/83411—Roller, cylinder or drum types
    • B29C66/83413—Roller, cylinder or drum types cooperating rollers, cylinders or drums
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/84—Specific machine types or machines suitable for specific applications
    • B29C66/849—Packaging machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • 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
    • B29C66/87—Auxiliary operations or devices
    • B29C66/874—Safety measures or devices
    • B29C66/8744—Preventing overheating of the parts to be joined, e.g. if the machine stops or slows down
    • B29C66/87443—Preventing overheating of the parts to be joined, e.g. if the machine stops or slows down by withdrawing the heating tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • 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
    • B29C66/914—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux
    • B29C66/9141—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature
    • 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
    • B29C66/914—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux
    • B29C66/9141—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature
    • B29C66/91421—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature of the joining tools
    • B29C66/91423—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature of the joining tools using joining tools having different temperature zones or using several joining tools with different temperatures
    • 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
    • B29C66/914—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux
    • B29C66/9161—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the heat or the thermal flux, i.e. the heat flux
    • B29C66/91641—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the heat or the thermal flux, i.e. the heat flux the heat or the thermal flux being non-constant over time
    • B29C66/91643—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the heat or the thermal flux, i.e. the heat flux the heat or the thermal flux being non-constant over time following a heat-time profile
    • B29C66/91645—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the heat or the thermal flux, i.e. the heat flux the heat or the thermal flux being non-constant over time following a heat-time profile by steps
    • 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
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B29C66/431—Joining the articles to themselves
    • B29C66/4312—Joining the articles to themselves for making flat seams in tubular or hollow articles, e.g. transversal seams
    • 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
    • B29C66/72—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
    • 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
    • B29C66/7234—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 barrier layer
    • 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
    • B29C66/7234—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 barrier layer
    • B29C66/72341—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 barrier layer for gases
    • 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

Abstract

<P>PROBLEM TO BE SOLVED: To provide a longitudinal seal tape sealing mechanism, a longitudinal sealing mechanism, and a liquid paper-made container forming device capable of ensuring required heat-seal strength. <P>SOLUTION: In a device for forming a liquid paper-made container covering a joint with a longitudinal seal tape 6, two or more heater heads 4 for heating one edge 1a in the longitudinal direction of a strip-like packaging material 1 are arranged on a longitudinal seal tape sealing mechanism 18 for heat-sealing one edge 1a in the longitudinal direction of the strip-like packaging material 1 to the longitudinal seal tape 6 in series to the flowing direction of the packaging material 1; and two or more heater heads 12 for heating the inner surface of the other edge 1b in the longitudinal direction of a tubular packaging material 11 are arranged on a longitudinal sealing mechanism 26 for heat-sealing one edge 1a and the other edge 1b in the longitudinal direction of the tubular packaging material 11 formed of the strip-like packaging material 1, and the longitudinal seal tape 6 heat-sealed to the one edge 1a and extending from the edge 1a and the other edge 1b in series. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、板紙からなるベース層の表裏両面に熱融着性合成樹脂を設けた包装材から形成される、紙容器の内面に露出する縦方向の継ぎ目を縦シールテープで融着被覆して縦シールする液体紙容器の成形に用いられる、縦シールテープシール機構、縦シール機構及び液体紙容器成形装置に関する。   In the present invention, a longitudinal seam exposed on the inner surface of a paper container, which is formed from a packaging material provided with heat-sealable synthetic resin on both front and back surfaces of a base layer made of paperboard, is fusion-coated with a vertical seal tape. The present invention relates to a vertical sealing tape sealing mechanism, a vertical sealing mechanism, and a liquid paper container forming apparatus that are used for forming a liquid paper container to be longitudinally sealed.

アセプティックタイプと呼ばれる液体紙容器を製造する液体紙容器用成形装置においては、帯状の液体紙容器用包装材料（本発明においては、単に包装材という。）を巻き取りロールより繰り出し、その長手方向両縁部を重ね合わせてシール（縦シール）することにより包材チューブを連続的に成形し、該包材チューブ内に液体食品等を充填し、密封することによって液体紙容器を製造するようになっている。   In a liquid paper container molding apparatus that manufactures a liquid paper container called an aseptic type, a belt-shaped liquid paper container packaging material (in the present invention, simply referred to as a packaging material) is unwound from a take-up roll, and both in the longitudinal direction. A packaging paper tube is continuously formed by overlapping and sealing the edges (vertical sealing), and a liquid paper container is manufactured by filling and sealing the packaging material tube with liquid food or the like. ing.

図８により、従来の液体紙容器成形装置による液体紙容器の成形、充填、密封を行う各工程を説明する。   With reference to FIG. 8, each process of forming, filling, and sealing a liquid paper container by a conventional liquid paper container forming apparatus will be described.

図示のように、帯状の包装材１は巻き取りロール２に巻き取られた状態で液体紙容器成形装置にセットされ、巻き取りロール２から繰り出されて、ガイドローラー３でガイドされつつ搬送され、その長手方向の一方の縁部１ａが液体紙容器成形装置に備えられている縦シールテープシール機構のヒーターヘッド４により加熱された後、この縁部１ａに縦シールテープ繰出し装置５から繰出された縦シールテープ６のほぼ半幅が重ね合わせられ、１対の圧着ローラー７に挟圧されることによりヒートシールされる。   As shown in the figure, the strip-shaped packaging material 1 is set in a liquid paper container forming apparatus in a state of being wound around a take-up roll 2, fed out from the take-up roll 2, and conveyed while being guided by a guide roller 3, One edge portion 1a in the longitudinal direction was heated by the heater head 4 of the vertical seal tape sealing mechanism provided in the liquid paper container forming apparatus, and then fed to the edge portion 1a from the vertical seal tape feeding device 5. Nearly half widths of the vertical sealing tape 6 are overlapped and heat-sealed by being sandwiched between a pair of press rollers 7.

このようにして長手方向の一方の縁部１ａに縦シールテープ６が融着された包装材１は、次いで、殺菌液槽８を経て、無菌チャンバー９内に入り、成形用フォーミングローラー１０で湾曲させられて、その長手方向の一方の縁部１ａと他方の縁部１ｂとが重ね合わせられてチューブ状に形成されてチューブ状包装材１１となる。そして、チューブ状包装材１１の長手方向の他方の縁部１ｂの内面（重ね合わせにより一方の縁部１ａと接する面）が液体紙容器成形装置に備えられている縦シール機構のヒーターヘッド１２により加熱された後、チューブ状包装材１１の外側に配置されたカウンターローラー（図示せず）と内側に配置されたプレッシャーローラー（図示せず）とでこの重ね合わせ部分が挟圧されて、チューブ状包装材１１の一方の縁部１ａ外面（重ね合わせにより他方の縁部１ｂと接する面）と他方の縁部１ｂ内面との間、及び、そのほぼ半幅が一方の縁部１ａより延出している縦シールテープ６と他方の縁部１ｂ内面との間でヒートシール（縦シール）が行われ、包材チューブ１３が成形される。縦シールにより成形された包材チューブ１３は、充填パイプ１４にて飲料等の液体が充填され、次いで、横シール工程１５にて上下方向に一定間隔で横シールされて密封され、横シールの中間で切断されて、枕状の個々の包装体１６に分離され、最終工程でこの包装体１６がブリック状に成形されて液体紙容器１７として完成する（例えば、特許文献１参照。）。
特開２００４−２９２０２９ The packaging material 1 in which the longitudinal seal tape 6 is fused to one edge 1a in the longitudinal direction in this way then enters the aseptic chamber 9 through the sterilizing liquid tank 8, and is bent by the forming roller 10 for molding. The one edge part 1a and the other edge part 1b of the longitudinal direction are piled up, are formed in the tube shape, and become the tube-shaped packaging material 11. FIG. The inner surface of the other edge portion 1b in the longitudinal direction of the tube-shaped packaging material 11 (the surface in contact with the one edge portion 1a by overlapping) is provided by the heater head 12 of the vertical seal mechanism provided in the liquid paper container forming apparatus. After being heated, this overlapped portion is sandwiched between a counter roller (not shown) arranged outside the tubular packaging material 11 and a pressure roller (not shown) arranged inside, thereby forming a tube shape. Between the outer surface of one edge 1a of the packaging material 11 (the surface in contact with the other edge 1b by overlapping) and the inner surface of the other edge 1b, and approximately half of the width extends from the one edge 1a. Heat sealing (vertical sealing) is performed between the vertical sealing tape 6 and the inner surface of the other edge 1b, and the packaging material tube 13 is formed. The packaging tube 13 formed by the vertical seal is filled with a liquid such as a beverage in the filling pipe 14, and then is horizontally sealed at a predetermined interval in the horizontal sealing step 15 to be sealed. And is separated into pillow-like individual packaging bodies 16, and in the final step, the packaging body 16 is formed into a brick shape and completed as a liquid paper container 17 (see, for example, Patent Document 1).
JP 2004-292029 A

前記した従来の液体紙容器成形装置では、包装材１の長手方向の一方の縁部１ａを加熱するヒーターヘッド４及びチューブ状包装材１１の長手方向の他方の縁部１ｂの内面（重ね合わせにより縁部１ａと接する面）を加熱するヒーターヘッド１２は、それぞれ１個づつ配置され、従って、ヒーターヘッド４による帯状の包装材１の一方の縁部１ａの加熱も、ヒーターヘッド１２によるチューブ状包装材１１の他方の縁部１ｂの加熱も、それぞれ１段階（以下、単段階ともいう。）で行われていた。   In the conventional liquid paper container forming apparatus described above, the heater head 4 for heating one edge 1a in the longitudinal direction of the packaging material 1 and the inner surface of the other edge 1b in the longitudinal direction of the tubular packaging material 11 (by overlapping) The heater heads 12 for heating the surface 1 in contact with the edge 1a are arranged one by one. Therefore, heating of one edge 1a of the strip-shaped packaging material 1 by the heater head 4 is also performed by the heater head 12. The heating of the other edge 1b of the material 11 was also performed in one stage (hereinafter also referred to as a single stage).

一方、近年、液体紙容器内容物の風味保護のため、酸素等のバリア性に優れ、内容物に異味を与えたり、風味を吸着したりし難い、ポリプロピレンやポリエチレンテレフタレートからなる熱融着性合成樹脂層を包装材の裏面最外層（チューブ状包装材１１の内側最外層、ひいては、液体紙容器１７を製造した場合の内側最外層）として用いることも検討されているが、一般に、風味保護性に優れる樹脂は、高い融点又はガラス転移点を有している。   On the other hand, in recent years, heat-sealing synthesis made of polypropylene or polyethylene terephthalate has excellent barrier properties such as oxygen to protect the flavor of the contents of liquid paper containers, and it is difficult to give the contents a different taste or absorb the flavor. The use of the resin layer as the outermost layer on the back surface of the packaging material (the innermost outermost layer of the tube-shaped packaging material 11, and thus the innermost outermost layer when the liquid paper container 17 is manufactured) has been studied. Resins that are excellent in have a high melting point or glass transition point.

しかし、上記のような単段階加熱方式では、融点又はガラス転移点の高い樹脂からなる熱融着性合成樹脂層を十分に溶融又は軟化させることができず、包装材の裏面最外層として、このような熱融着性合成樹脂層を用いると、必要なヒートシール強度が得られない場合があり、これは特に、縦シール時において問題となっていた。縦シール部を挟圧するためのカウンターローラーとプレッシャーローラーのうち、装置本体を構成する架台に固定されているカウンターローラーに対して、プレッシャーローラーは、上部のみ固定された充填パイプに板バネを介して取りつけられているので、もともと、強力な圧を加え難い構造となっているからである。   However, in the single-stage heating method as described above, the heat-fusible synthetic resin layer made of a resin having a high melting point or glass transition point cannot be sufficiently melted or softened. When such a heat-fusible synthetic resin layer is used, the required heat seal strength may not be obtained, and this has been a problem particularly during vertical sealing. Of the counter roller and pressure roller for clamping the vertical seal, the pressure roller is connected to the filling pipe, which is fixed only at the upper part, via a leaf spring. This is because it has a structure that is difficult to apply strong pressure from the beginning.

このため、チューブ状包装材１１の長手方向の一方の縁部１ａ外面と他方の縁部１ｂ内面との間、及び／又は、縦シールテープ６と他方の縁部１ｂ内面との間でシール不良が発生し、出来上りの液体紙容器において、内容物の漏れや滲みを起こしたり、外部からの細菌混入により内容物を腐敗させてしまうおそれがあった。   For this reason, a seal failure is caused between the outer surface of one edge portion 1a in the longitudinal direction of the tubular packaging material 11 and the inner surface of the other edge portion 1b and / or between the vertical seal tape 6 and the inner surface of the other edge portion 1b. In the finished liquid paper container, the contents may leak or bleed, or the contents may be spoiled due to external bacterial contamination.

また、上記単段階加熱方式において、熱融着性合成樹脂層を十分に溶融又は軟化させて必要なヒートシール強度を得るため、ヒーターヘッド４及び／又はヒーターヘッド１２による加熱温度を高く設定すると、包装材が焦げたり、包装材内部の水分が急激に高温で加熱されて蒸発することにより、溶融又は軟化した包装材表面の熱融着性合成樹脂層に火脹れ（ブリスター）やピンホールを発生させたり、更には、包装材１を構成しているアルミ箔等にクラックを生じさせたりして、包装材を損傷する。このため、出来上りの液体紙容器において、酸素バリア性や遮光性の低下を招く他、やはり、内容物の漏れや滲み、外部からの細菌混入による内容物の腐敗を起こすおそれがあった。   In the single-stage heating method, in order to sufficiently melt or soften the heat-fusible synthetic resin layer to obtain a necessary heat seal strength, when the heating temperature by the heater head 4 and / or the heater head 12 is set high, Burning (blister) or pinholes on the heat-sealable synthetic resin layer on the surface of the packaging material that has been melted or softened due to the burning of the packaging material or the moisture inside the packaging material being rapidly heated and evaporated. The packaging material is damaged by generating the crack or by causing a crack in the aluminum foil or the like constituting the packaging material 1. For this reason, in the finished liquid paper container, in addition to causing a decrease in oxygen barrier properties and light shielding properties, there is also a risk that the contents may be leaked or oozed and the contents may be spoiled due to external bacterial contamination.

従って、上記単段階加熱方式では、ヒーターヘッド４及び／又はヒーターヘッド１２による加熱温度を、包装材１同士の間及び／又は包装材１と縦シールテープ６との間で必要なヒートシール強度を確保しつつ、包装材１に損傷を与えないよう、慎重に設定し、制御する必要があるため、かかる液体紙容器成形装置を操作するオペレーターに大きな負担がかかっていた。   Therefore, in the single-stage heating method, the heating temperature by the heater head 4 and / or the heater head 12 is set so that the heat seal strength required between the packaging materials 1 and / or between the packaging material 1 and the vertical sealing tape 6 is obtained. Since it is necessary to set and control carefully so as not to damage the packaging material 1 while securing it, a heavy burden is placed on the operator who operates the liquid paper container forming apparatus.

本発明の目的は、低い温度で熱融着性合成樹脂層を十分に溶融又は軟化させ、包装材同士の間及び／又は包装材と縦シールテープとの間で必要なヒートシール強度を確保できるようにした縦シールテープシール機構、縦シール機構及び液体紙容器成形装置を提供することにある。   The object of the present invention is to sufficiently melt or soften the heat-fusible synthetic resin layer at a low temperature, and to secure the necessary heat seal strength between the packaging materials and / or between the packaging material and the vertical sealing tape. It is an object of the present invention to provide a vertical sealing tape sealing mechanism, a vertical sealing mechanism, and a liquid paper container forming apparatus.

上記の目的を達成する本発明の構成を説明すると次の通りである。   The configuration of the present invention that achieves the above object will be described as follows.

請求項１に記載の発明は、板紙をベース層とし、熱融着性合成樹脂を前記ベース層の表裏両面の最外層とする帯状の包装材から形成される、紙容器の内面に露出する縦方向の継ぎ目を縦シールテープで被覆してなる液体紙容器を成形する装置において使用される、前記帯状の包装材の長手方向の一方の縁部と縦シールテープとをヒートシールするための縦シールテープシール機構であって、前記帯状の包装材の長手方向の一方の縁部を加熱するヒーターヘッドが２個以上、包装材の流れ方向に対して直列に配置されていることを特徴とする。   According to the first aspect of the present invention, the vertical surface exposed on the inner surface of the paper container is formed from a strip-shaped packaging material having a paperboard as a base layer and a heat-fusible synthetic resin as outermost layers on both sides of the base layer. A vertical seal for heat-sealing one edge in the longitudinal direction of the strip-shaped packaging material and the vertical seal tape used in an apparatus for forming a liquid paper container formed by covering a seam of a direction with a vertical seal tape In the tape sealing mechanism, two or more heater heads for heating one edge in the longitudinal direction of the strip-shaped packaging material are arranged in series with respect to the flow direction of the packaging material.

請求項２に記載の発明は、請求項１に記載の、前記２個以上のヒーターヘッドのうち、最初に帯状の包装材の長手方向の一方の縁部を加熱することとなる初段ヒーターヘッドが、他のヒーターヘッドよりも低い温度で該一方の縁部を加熱するようになっていることを特徴とする。   According to a second aspect of the present invention, there is provided a first-stage heater head that first heats one of the longitudinal edges of the strip-shaped packaging material of the two or more heater heads according to the first aspect. The one edge is heated at a temperature lower than that of the other heater head.

請求項３に記載の発明は、請求項１に記載の、前記２個以上のヒーターヘッドのうち、最初に帯状の包装材の長手方向の一方の縁部を加熱することとなる初段ヒーターヘッドは、他のヒーターヘッドよりも小さい熱量で該一方の縁部を加熱するようになっていることを特徴とする。   According to a third aspect of the present invention, the first-stage heater head that first heats one longitudinal edge of the strip-shaped packaging material of the two or more heater heads according to the first aspect is The one edge portion is heated with a smaller amount of heat than the other heater heads.

請求項４に記載の発明は、板紙をベース層とし、熱融着性合成樹脂を前記ベース層の表裏両面の最外層とする帯状の包装材から形成される、紙容器の内面に露出する縦方向の継ぎ目を縦シールテープで被覆してなる液体紙容器を成形する装置において使用される、前記帯状の包装材から形成されたチューブ状包装材の長手方向の一方の縁部と他方の縁部、及び、該一方の縁部にヒートシールされてこの縁部より延出している縦シールテープと他方の縁部とをヒートシールするための縦シール機構であって、前記チューブ状包装材の長手方向の他方の縁部内面を加熱するヒーターヘッドが２個以上、チューブ状包装材の流れ方向に対して直列に配置されていることを特徴とする。   According to a fourth aspect of the present invention, there is provided a vertical exposed on the inner surface of a paper container, which is formed from a strip-shaped packaging material having a paperboard as a base layer and a heat-fusible synthetic resin as outermost layers on both sides of the base layer. One edge and the other edge in the longitudinal direction of the tube-shaped packaging material formed from the strip-shaped packaging material used in an apparatus for forming a liquid paper container formed by covering a seam of a direction with a vertical seal tape And a vertical sealing mechanism for heat-sealing the vertical sealing tape that is heat-sealed to the one edge and extending from the edge, and the other edge, the longitudinal length of the tubular packaging material Two or more heater heads for heating the inner surface of the other edge in the direction are arranged in series with respect to the flow direction of the tubular packaging material.

請求項５に記載の発明は、請求項４に記載の、前記２個以上のヒーターヘッドのうち、最初にチューブ状包装材の長手方向の他方の縁部内面を加熱することとなる初段ヒーターヘッドが、他のヒーターヘッドよりも低い温度で該他方の縁部内面を加熱するようになっていることを特徴とする。   According to a fifth aspect of the present invention, the first stage heater head that heats the inner surface of the other edge in the longitudinal direction of the tubular packaging material first among the two or more heater heads according to the fourth aspect. However, the inner surface of the other edge is heated at a temperature lower than that of other heater heads.

請求項６に記載の発明は、請求項４に記載の、前記２個以上のヒーターヘッドのうち、最初にチューブ状包装材の長手方向の他方の縁部内面を加熱することとなる初段ヒーターヘッドは、他のヒーターヘッドよりも小さい熱量で該他方の縁部内面を加熱するようになっていることを特徴とする。   The invention according to claim 6 is the first-stage heater head that heats the inner surface of the other edge of the tubular packaging material in the longitudinal direction first of the two or more heater heads according to claim 4. Is characterized in that the inner surface of the other edge is heated with a smaller amount of heat than the other heater heads.

請求項７に記載の発明は、液体紙容器成形装置において、請求項１に記載の縦シールテープシール機構及び／又は請求項４に記載の縦シール機構を備えたことを特徴とする。   According to a seventh aspect of the present invention, in the liquid paper container forming apparatus, the vertical seal tape sealing mechanism according to the first aspect and / or the vertical sealing mechanism according to the fourth aspect is provided.

請求項１に記載の発明は、板紙をベース層とし、熱融着性合成樹脂を前記ベース層の表裏両面の最外層とする帯状の包装材から形成される、紙容器の内面に露出する縦方向の継ぎ目を縦シールテープで被覆してなる液体紙容器を成形する装置において使用される、前記帯状の包装材の長手方向の一方の縁部と縦シールテープとをヒートシールするための縦シールテープシール機構であって、前記帯状の包装材の長手方向の一方の縁部を加熱するヒーターヘッドが２個以上、包装材の流れ方向に対して直列に配置されているので、帯状の包装材の一方の縁部を多段階で加熱できることから、従来の１段階で加熱した場合と比べ、より低い温度で均一に加熱でき、しかも急激な加熱を回避できるので、包装材に損傷を与えることなく、包装材の裏面最外層の熱融着性合成樹脂を十分に溶融又は軟化させ、包装材と縦シールテープとを必要な強度で安定的にヒートシールすることができ、前記包装材が高い融点又はガラス転移点を有する熱融着性合成樹脂を裏面最外層に用いたものであっても、包装材に損傷を与えることなく、包装材の裏面最外層の熱融着性合成樹脂を十分に溶融又は軟化させ、包装材と縦シールテープとを必要な強度で安定的にヒートシールすることができる。   According to the first aspect of the present invention, the vertical surface exposed on the inner surface of the paper container is formed from a strip-shaped packaging material having a paperboard as a base layer and a heat-fusible synthetic resin as outermost layers on both sides of the base layer. A vertical seal for heat-sealing one edge in the longitudinal direction of the strip-shaped packaging material and the vertical seal tape used in an apparatus for forming a liquid paper container formed by covering a seam of a direction with a vertical seal tape Two or more heater heads for heating one edge in the longitudinal direction of the strip-shaped packaging material are arranged in series with respect to the flow direction of the packaging material. Since one edge of the film can be heated in multiple stages, it can be heated uniformly at a lower temperature than in the case of heating in one conventional stage, and abrupt heating can be avoided without damaging the packaging material. The back of the packaging material The outermost layer heat-fusible synthetic resin can be sufficiently melted or softened, and the packaging material and the longitudinal seal tape can be stably heat-sealed with the required strength, and the packaging material has a high melting point or glass transition point. Even if the heat-sealable synthetic resin having the backside outermost layer is used, the heat-sealable synthetic resin of the backside outermost layer of the packaging material is sufficiently melted or softened without damaging the packaging material, The packaging material and the vertical sealing tape can be stably heat-sealed with the required strength.

請求項２に記載の発明は、請求項１に記載の、前記２個以上のヒーターヘッドのうち、最初に帯状の包装材の長手方向の一方の縁部を加熱することとなる初段ヒーターヘッドが、他のヒーターヘッドよりも低い温度で該一方の縁部を加熱するようになっているので、包装材の急激な加熱が確実に回避され、包装材に損傷を与えることがなく、包装材の裏面最外層の熱融着性合成樹脂を十分に溶融又は軟化させることができる。   According to a second aspect of the present invention, there is provided a first-stage heater head that first heats one of the longitudinal edges of the strip-shaped packaging material of the two or more heater heads according to the first aspect. The one edge is heated at a temperature lower than that of the other heater head, so that rapid heating of the packaging material is reliably avoided, and the packaging material is not damaged. The heat-fusible synthetic resin of the back outermost layer can be sufficiently melted or softened.

請求項３に記載の発明は、請求項１に記載の、前記２個以上のヒーターヘッドのうち、最初に帯状の包装材の長手方向の一方の縁部を加熱することとなる初段ヒーターヘッドが、他のヒーターヘッドよりも小さい熱量で該一方の縁部を加熱するようになっているので、包装材の急激な加熱が確実に回避され、包装材に損傷を与えることがなく、包装材の裏面最外層の熱融着性合成樹脂を十分に溶融又は軟化させることができる。   According to a third aspect of the present invention, there is provided a first-stage heater head that first heats one edge of the longitudinal direction of the strip-shaped packaging material among the two or more heater heads according to the first aspect. The one edge portion is heated with a smaller amount of heat than the other heater heads, so that rapid heating of the packaging material is reliably avoided, and the packaging material is not damaged. The heat-fusible synthetic resin of the back outermost layer can be sufficiently melted or softened.

請求項４に記載の発明は、板紙をベース層とし、熱融着性合成樹脂を前記ベース層の表裏両面の最外層とする帯状の包装材から形成される、紙容器の内面に露出する縦方向の継ぎ目を縦シールテープで被覆してなる液体紙容器を成形する装置において使用される、前記帯状の包装材から形成されたチューブ状包装材の長手方向の一方の縁部と他方の縁部、及び、該一方の縁部にヒートシールされてこの縁部より延出している縦シールテープと他方の縁部とをヒートシールするための縦シール機構であって、前記チューブ状包装材の長手方向の他方の縁部内面を加熱するヒーターヘッドが２個以上、チューブ状包装材の流れ方向に対して直列に配置されているので、チューブ状包装材の長手方向の他方の縁部内面を多段階で加熱できることから、従来の１段階で加熱した場合と比べ、より低い温度で均一に加熱でき、しかも急激な加熱を回避できるので、チューブ状包装材に損傷を与えることなく、チューブ状包装材の内側最外層の熱融着性合成樹脂を十分に溶融又は軟化させ、チューブ状包装材の一方の縁部と他方の縁部、及び、該一方の縁部にヒートシールされてこの縁部より延出している縦シールテープと他方の縁部とを必要な強度で安定的にヒートシールすることができ、前記チューブ状包装材を形成する帯状の包装材が高い融点又はガラス転移点を有する熱融着性合成樹脂を裏面最外層（チューブ状包装材形成時の内側最外層）に用いたものであっても、チューブ状包装材の内側最外層の熱融着性合成樹脂を十分に溶融又は軟化させ、チューブ状包装材の一方の縁部と他方の縁部、及び、該一方の縁部にヒートシールされてこの縁部より延出している縦シールテープと他方の縁部とを必要な強度で安定的にヒートシールすることができる。   According to a fourth aspect of the present invention, there is provided a vertical exposed on the inner surface of a paper container, which is formed from a strip-shaped packaging material having a paperboard as a base layer and a heat-fusible synthetic resin as outermost layers on both sides of the base layer. One edge and the other edge in the longitudinal direction of the tube-shaped packaging material formed from the strip-shaped packaging material used in an apparatus for forming a liquid paper container formed by covering a seam of a direction with a vertical seal tape And a vertical sealing mechanism for heat-sealing the vertical sealing tape that is heat-sealed to the one edge and extending from the edge, and the other edge, the longitudinal length of the tubular packaging material Since two or more heater heads for heating the inner surface of the other edge portion in the direction are arranged in series with respect to the flow direction of the tubular packaging material, the inner surface of the other edge portion in the longitudinal direction of the tubular packaging material Because it can be heated in stages Compared to the conventional one-stage heating, it can be heated uniformly at a lower temperature, and abrupt heating can be avoided, so the heat of the innermost outer layer of the tube-shaped packaging material can be avoided without damaging the tube-shaped packaging material. A fusible synthetic resin is sufficiently melted or softened, one edge and the other edge of the tubular packaging material, and a vertical seal that is heat-sealed to the one edge and extends from this edge. A heat-sealable synthetic resin capable of stably heat-sealing the tape and the other edge with the required strength, and having a high melting point or glass transition point in the strip-shaped packaging material forming the tubular packaging material Even if it is used for the back outermost layer (innermost outer layer at the time of tube-shaped packaging material formation), the heat-fusible synthetic resin of the innermost outermost layer of the tube-shaped packaging material is sufficiently melted or softened to form a tube-shaped packaging One edge of the material and the other Edges, and can be stably heat-sealed with the required strength and longitudinal sealing tape and the other edge extends from the edge are heat sealed to one edge the.

請求項５に記載の発明は、請求項４に記載の、前記２個以上のヒーターヘッドのうち、最初にチューブ状包装材の長手方向の他方の縁部内面を加熱することとなる初段ヒーターヘッドが、他のヒーターヘッドよりも低い温度で該他方の縁部内面を加熱するようになっているので、チューブ状包装材の急激な加熱が確実に回避され、チューブ状包装材に損傷を与えることがなく、チューブ状包装材の内側最外層の熱融着性合成樹脂を十分に溶融又は軟化させることができる。   According to a fifth aspect of the present invention, the first stage heater head that heats the inner surface of the other edge in the longitudinal direction of the tubular packaging material first among the two or more heater heads according to the fourth aspect. However, since the inner surface of the other edge is heated at a lower temperature than other heater heads, sudden heating of the tube-shaped packaging material is surely avoided, and the tube-shaped packaging material is damaged. The heat-fusible synthetic resin in the innermost outermost layer of the tubular packaging material can be sufficiently melted or softened.

請求項６に記載の発明は、請求項４に記載の、前記２個以上のヒーターヘッドのうち、最初にチューブ状包装材の長手方向の他方の縁部内面を加熱することとなる初段ヒーターヘッドが、他のヒーターヘッドよりも小さい熱量で該他方の縁部内面を加熱するようになっているので、チューブ状包装材の急激な加熱が確実に回避され、チューブ状包装材に損傷を与えることがなく、チューブ状包装材の内側最外層の熱融着性合成樹脂を十分に溶融又は軟化させることができる。   The invention according to claim 6 is the first-stage heater head that heats the inner surface of the other edge of the tubular packaging material in the longitudinal direction first of the two or more heater heads according to claim 4. However, since the inner surface of the other edge is heated with a smaller amount of heat than other heater heads, sudden heating of the tube-shaped packaging material is surely avoided, and the tube-shaped packaging material is damaged. The heat-fusible synthetic resin in the innermost outermost layer of the tubular packaging material can be sufficiently melted or softened.

請求項７に記載の発明は、液体紙容器成形装置において、請求項１に記載の縦シールテープシール機構及び／又は請求項４に記載の縦シール機構を備えたので、包装材の裏面最外層として、様々な熱融着性合成樹脂を使い、該包装材を損傷すること無く、且つ、必要な強度で安定的にシールすることができるので、酸素バリア性や遮光性の低下、内容物の漏れや滲み、外部からの細菌混入による内容物の腐敗を起こすおそれのない液体紙容器を成形することができ、そのためのオペレーターの負担も少なく、更に、製品歩留り、操業効率の向上も図ることができる。   Since the invention according to claim 7 is provided with the vertical seal tape seal mechanism according to claim 1 and / or the vertical seal mechanism according to claim 4 in the liquid paper container molding apparatus, the outermost layer on the back surface of the packaging material Using various heat-sealable synthetic resins, the packaging material can be stably sealed with the required strength without damaging the packaging material. A liquid paper container can be formed that does not cause leakage, bleeding, or external content of bacteria, which reduces the burden on the operator, and further improves product yield and operational efficiency. it can.

以下、本発明に係る縦シールテープシール機構、縦シール機構及び液体紙容器成形装置を実施するための最良の形態における一例を図１乃至図７を参照して詳細に説明する。   Hereinafter, an example of the best mode for carrying out the vertical sealing tape sealing mechanism, the vertical sealing mechanism, and the liquid paper container forming apparatus according to the present invention will be described in detail with reference to FIGS.

図１は、本発明に係る縦シールテープシール機構及び縦シール機構を備えた液体紙容器成形装置における液体紙容器の成形、充填、密封を行う各工程の概略図、図２は、図１に示す各工程の概略図における縦シールテープシール機構の詳細を示す斜視図、図３は図２に示す縦シールテープシール機構に設けたヒーターヘッド操作部を示す説明図、図４（Ａ）、（Ｂ）は、図２に示す縦シールテープシール機構に設けたヒーターヘッドにおける熱風吹き出し口の説明図、図５は、図１に示す各工程の概略図における縦シール機構の詳細を示す斜視図、図６は図５に示す縦シール機構に設けたヒーターヘッドの斜視図、図７は図５に示す縦シール機構に設けたヒーターヘッド操作部を示す説明図である。なお、これらの図において前述した図８と対応する部分には、同一符号を付けて示している。   FIG. 1 is a schematic view of each step of forming, filling, and sealing a liquid paper container in a liquid paper container forming apparatus having a vertical sealing tape sealing mechanism and a vertical sealing mechanism according to the present invention, and FIG. FIG. 3 is a perspective view showing details of the vertical seal tape sealing mechanism in the schematic diagram of each step shown, FIG. 3 is an explanatory view showing a heater head operation section provided in the vertical seal tape sealing mechanism shown in FIG. B) is an explanatory view of a hot air outlet in the heater head provided in the vertical seal tape sealing mechanism shown in FIG. 2, FIG. 5 is a perspective view showing details of the vertical sealing mechanism in the schematic diagram of each step shown in FIG. 6 is a perspective view of the heater head provided in the vertical seal mechanism shown in FIG. 5, and FIG. 7 is an explanatory view showing the heater head operation unit provided in the vertical seal mechanism shown in FIG. In these drawings, portions corresponding to those in FIG. 8 described above are denoted by the same reference numerals.

図示のように、板紙をベース層とし、熱融着性合成樹脂を前記ベース層の表裏両面の最外層とする帯状の包装材１は、巻き取りロール２に巻き取られた状態で液体紙容器成形装置にセットされ、巻き取りロール２から繰り出されて、ガイドローラー３でガイドされつつ搬送され、その過程で、長手方向の一方の縁部１ａが、液体紙容器成形装置に備えられた縦シールテープシール機構１８に設けられたヒーターヘッド４で加熱され、この一方の縁部１ａに縦シールテープ繰出し装置５から繰出された縦シールテープ６のほぼ半幅が重ね合わせられ、１対の圧着ローラー７に挟圧されることによりヒートシールされる。   As shown in the drawing, a strip-shaped packaging material 1 having a paperboard as a base layer and a heat-fusible synthetic resin as outermost layers on both the front and back surfaces of the base layer is a liquid paper container in a state of being wound around a winding roll 2. It is set in the molding device, fed out from the take-up roll 2, and conveyed while being guided by the guide roller 3. In the process, one edge 1a in the longitudinal direction is a vertical seal provided in the liquid paper container molding device. Heated by the heater head 4 provided in the tape seal mechanism 18, the almost half width of the vertical seal tape 6 fed from the vertical seal tape feeding device 5 is superimposed on one edge 1 a, and a pair of pressure rollers 7. It is heat-sealed by being pinched by.

前記縦シールテープシール機構１８には、包装材１の流れ方向に対して直列に配置された２個以上のヒーターヘッド４が設けられており、巻き取りロール２から繰り出された包装材１の長手方向の一方の縁部１ａを、２個以上のヒーターヘッド４で多段階に加熱するようになっている。本例では２個のヒーターヘッド４ａ，４ｂが設けられており、２段階に加熱するようになっている。   The longitudinal seal tape sealing mechanism 18 is provided with two or more heater heads 4 arranged in series with respect to the flow direction of the packaging material 1, and the longitudinal length of the packaging material 1 fed out from the take-up roll 2. One edge 1a in the direction is heated in multiple stages by two or more heater heads 4. In this example, two heater heads 4a and 4b are provided to heat in two stages.

前記ヒーターヘッド４ａ，４ｂは熱風を熱源としており、所定の温度に加熱された熱風を、耐熱性素材で形成された配管１９からヒーターヘッド４ａ，４ｂに供給し、帯状の包装材１の長手方向の一方の縁部１ａに向かい合うヒーターヘッド４ａ，４ｂの加熱面２０に設けられた吹き出し口２１から吹き出すことにより、帯状の包装材１の一方の縁部１ａを加熱するようになっている。前記ヒーターヘッド４ａ，４ｂの加熱面２０に設けられた吹き出し口２１は、図４（Ａ）に示すように多数の孔２２であっても、また、図４（Ｂ）に示すようにスリット２３であってもよく、特に限定されない。   The heater heads 4a and 4b use hot air as a heat source, and hot air heated to a predetermined temperature is supplied to the heater heads 4a and 4b from a pipe 19 formed of a heat-resistant material. The one edge part 1a of the strip-shaped packaging material 1 is heated by blowing from the blowing port 21 provided in the heating surface 20 of the heater heads 4a and 4b facing the one edge part 1a. The air outlet 21 provided in the heating surface 20 of the heater heads 4a and 4b may be a large number of holes 22 as shown in FIG. 4 (A), or the slit 23 as shown in FIG. 4 (B). There is no particular limitation.

前記２個以上のヒーターヘッド４による帯状の包装材１の長手方向の一方の縁部１ａの加熱は、同じ温度の熱風で多段階に行ってもよいが、前記２個以上のヒーターヘッド４のうち、最初に帯状の包装材１の一方の縁部１ａを加熱することとなる初段ヒーターヘッド４ａは、該一方の縁部１ａを、他のヒーターヘッド４ｂよりも低い温度で加熱するか、或いは小さい熱量で加熱するのが好ましい。   The heating of one edge 1a in the longitudinal direction of the strip-shaped packaging material 1 by the two or more heater heads 4 may be performed in multiple stages with hot air of the same temperature. Of these, the first-stage heater head 4a, which first heats one edge 1a of the strip-shaped packaging material 1, heats the one edge 1a at a lower temperature than the other heater head 4b, or It is preferable to heat with a small amount of heat.

個々のヒーターヘッド４について、包装材を加熱する温度、包装材に与える熱量等を調節しようとする場合、これら個々のヒーターヘッド４は、個別に加熱温度及び動作が制御され、その熱源も別系統とされることが好ましい。加熱温度や動作等は、従来から知られているシーケンサー等よりプラグラミングし、制御することができる。また、熱源が熱風である場合、熱量の調節は、ヒーターヘッド４の加熱面２０に設けられた吹き出し口２１の面積を調節することにより容易に行うことができる。   When it is intended to adjust the temperature for heating the packaging material, the amount of heat applied to the packaging material, etc. for each individual heater head 4, the heating temperature and operation of each individual heater head 4 are individually controlled, and the heat source is also a separate system. It is preferable that The heating temperature, operation, and the like can be controlled by programming using a conventionally known sequencer or the like. When the heat source is hot air, the amount of heat can be easily adjusted by adjusting the area of the air outlet 21 provided on the heating surface 20 of the heater head 4.

前記ヒーターヘッド４ａ，４ｂは、縦シールテープシール機構１８に設けたヒーターヘッド操作部２４により、図３中、矢印の示す方向に進退可能となっており、液体紙容器成形装置の運転中は、図３に示す動作位置に移動するようになっている。前記ヒーターヘッド操作部２４では、操作手段としてエアシリンダー２５を用いている。   The heater heads 4a and 4b can be advanced and retracted in the direction indicated by the arrow in FIG. 3 by the heater head operation unit 24 provided in the vertical seal tape seal mechanism 18, and during operation of the liquid paper container forming apparatus, It moves to the operating position shown in FIG. In the heater head operation section 24, an air cylinder 25 is used as an operation means.

上記の縦シールテープシール機構１８で長手方向の一方の縁部１ａに縦シールテープ６が融着された包装材１は、次いで、殺菌液槽８を経て、無菌チャンバー９内に入り、成形用フォーミングローラー１０で湾曲させられて、その長手方向の一方の縁部１ａと他方の縁部１ｂとが重ね合わせられてチューブ状に成形されてチューブ状包装材１１となる。   The packaging material 1 in which the longitudinal seal tape 6 is fused to one edge 1a in the longitudinal direction by the longitudinal seal tape sealing mechanism 18 then enters the aseptic chamber 9 through the sterilizing liquid tank 8, and is used for molding. Curved by the forming roller 10, one edge 1 a and the other edge 1 b in the longitudinal direction are overlapped and formed into a tube shape to form a tube-shaped packaging material 11.

そして、チューブ状包装材１１の長手方向の他方の縁部１ｂの内面が液体紙容器成形装置に備えられている縦シール機構２６のヒーターヘッド１２により加熱された後、チューブ状包装材１１の外側に配置されたカウンターローラー（図示せず）と内側に配置されたプレッシャーローラー（図示せず）とでこの重ね合わせ部分が挟圧されて、チューブ状包装材１１の一方の縁部１ａ外面と他方の縁部１ｂ内面との間、及び、そのほぼ半幅が一方の縁部１ａより延出している縦シールテープ６と他方の縁部１ｂ内面との間でヒートシール（縦シール）が行われ、包材チューブ１３が成形される。   And after the inner surface of the other edge part 1b of the longitudinal direction of the tubular packaging material 11 is heated by the heater head 12 of the vertical seal mechanism 26 with which the liquid paper container shaping | molding apparatus is equipped, the outer side of the tubular packaging material 11 The overlapping portion is clamped by a counter roller (not shown) arranged on the inner side and a pressure roller (not shown) arranged on the inner side, so that the outer surface of one edge 1a of the tubular packaging material 11 and the other Heat seal (vertical seal) is performed between the inner surface of the edge portion 1b and between the vertical seal tape 6 whose half width extends from the one edge portion 1a and the inner surface of the other edge portion 1b, The packaging tube 13 is formed.

前記縦シール機構２６には、チューブ状包装材１１の流れ方向に対して直列に配置された２個以上のヒーターヘッド１２が設けられており、前記チューブ状包装材１１の長手方向の他方の縁部１ｂ内面を２個以上のヒーターヘッド１２で多段階に加熱するようになっている。本例では、前記縦シールテープシール機構１８と同様に、２個のヒーターヘッド１２ａ、１２ｂが設けられており、２段階で加熱するようになっている。   The vertical sealing mechanism 26 is provided with two or more heater heads 12 arranged in series with respect to the flow direction of the tubular packaging material 11, and the other edge in the longitudinal direction of the tubular packaging material 11. The inner surface of the portion 1b is heated in multiple stages by two or more heater heads 12. In this example, two heater heads 12a and 12b are provided in the same manner as the vertical seal tape seal mechanism 18 and are heated in two stages.

本例のヒーターヘッド１２ａ、１２ｂも熱風を熱源としており、所定の温度に加熱された熱風を耐熱性素材で形成された配管２７からヒーターヘッド１２ａ，１２ｂに供給し、チューブ状包装材１１の長手方向の他方の縁部１ｂに向かい合うヒーターヘッド１２ａ，１２ｂの加熱面２８に設けられた吹き出し口２９から吹出すことにより、チューブ状包装材１１の他方の縁部１ｂを加熱するようになっている。前記ヒーターヘッド１２ａ，１２ｂの加熱面２８に設けられた吹き出し口２９は、図６に示すような多数の孔２２であっても、また、図４（Ｂ）に示すようなスリット２３と同様の形状であってもよく、特に限定されない。   The heater heads 12a and 12b in this example also use hot air as a heat source, and hot air heated to a predetermined temperature is supplied to the heater heads 12a and 12b from a pipe 27 formed of a heat-resistant material. The other edge 1b of the tubular packaging material 11 is heated by blowing from a blowout port 29 provided on the heating surface 28 of the heater head 12a, 12b facing the other edge 1b in the direction. . The air outlets 29 provided on the heating surfaces 28 of the heater heads 12a and 12b may have a large number of holes 22 as shown in FIG. 6, or similar to the slits 23 as shown in FIG. A shape may be sufficient and it is not specifically limited.

前記２個以上のヒーターヘッド１２によるチューブ状包装材１１の長手方向の他方の縁部１ｂの加熱は、同じ温度の熱風で多段階に行ってもよいが、前記２個以上のヒーターヘッド１２のうち、最初にチューブ状包装材１１の他方の縁部１ｂを加熱することとなる初段ヒーターヘッド１２ａは、該他方の縁部１ｂを、他のヒーターヘッド１２ｂよりも低い温度で加熱するか、或いは小さい熱量で加熱するのが好ましい。   The heating of the other edge portion 1b in the longitudinal direction of the tubular packaging material 11 by the two or more heater heads 12 may be performed in multiple stages with hot air of the same temperature. Among them, the first-stage heater head 12a, which first heats the other edge 1b of the tubular packaging material 11, heats the other edge 1b at a lower temperature than the other heater head 12b, or It is preferable to heat with a small amount of heat.

個々のヒーターヘッド１２について、包装材を加熱する温度、包装材に与える熱量等を調節しようとする場合、これら個々のヒーターヘッド１２は、個別に加熱温度及び動作が制御され、その熱源も別系統とされることが好ましい。加熱温度や動作等は、従来から知られているシーケンサー等よりプラグラミングし、制御することができる。また、熱源が熱風である場合、熱量の調節は、ヒーターヘッド１２の加熱面２８に設けられた吹き出し口２９の面積を調節することや、熱風を供給する配管２７の径を変えることにより、容易に行うことができる。   When it is intended to adjust the temperature at which the packaging material is heated, the amount of heat applied to the packaging material, etc. for each individual heater head 12, the heating temperature and operation of each individual heater head 12 are individually controlled, and the heat source is also a separate system. It is preferable that The heating temperature, operation, and the like can be controlled by programming using a conventionally known sequencer or the like. When the heat source is hot air, the amount of heat can be easily adjusted by adjusting the area of the air outlet 29 provided on the heating surface 28 of the heater head 12 or changing the diameter of the pipe 27 that supplies the hot air. Can be done.

前記ヒーターヘッド１２ａ，１２ｂは、縦シール機構２６に設けたヒーターヘッド操作部３０により、図７中、矢印の示す方向に移動可能となっており、液体紙容器成形装置の運転中は、図７に示す動作位置に移動するようになっている。前記ヒーターヘッド操作部３０では、操作手段としてエアシリンダー３１を用いている。   The heater heads 12a and 12b can be moved in a direction indicated by an arrow in FIG. 7 by a heater head operation unit 30 provided in the vertical seal mechanism 26, and during operation of the liquid paper container forming apparatus, FIG. It moves to the operation position shown in FIG. In the heater head operation unit 30, an air cylinder 31 is used as an operation means.

このようにして成形された包材チューブ１３は、充填パイプ１４にて飲料等の液体が充填され、次いで、横シール工程１５にて上下方向に一定間隔で横シールされて密封され、横シールの中間で切断されて、枕状の個々の包装体１６に分離され、最終工程でこの包装体１６がブリック状に成形されて液体紙容器１７として完成する。   The packaging tube 13 molded in this way is filled with a liquid such as a beverage in the filling pipe 14, and then is horizontally sealed at a predetermined interval in the transverse sealing step 15 to be sealed. Cut in the middle and separated into pillow-like individual packaging bodies 16, and in the final step, this packaging body 16 is formed into a brick shape to be completed as a liquid paper container 17.

以上のように、本発明に係る液体紙容器成形装置の縦シールテープシール機構１８では、帯状の包装材１の長手方向の一方の縁部１ａを加熱する２個のヒーターヘッド４ａ，４ｂが、包装材１の流れ方向に対して直列に配置されているので、帯状の包装材１の一方の縁部１ａを多段階で加熱できることから、従来の１段階で加熱した場合と比べ、より低い温度で均一に加熱でき、しかも急激な加熱を回避できるので、包装材１に損傷を与えることなく、包装材１の裏面最外層の熱融着性合成樹脂を十分に溶融又は軟化させ、包装材１と縦シールテープ６とを必要な強度で安定的にヒートシールすることができ、前記包装材１が高い融点又はガラス転移点を有する熱融着性合成樹脂を裏面最外層に用いたものであっても、包装材１に損傷を与えることなく、包装材１の裏面最外層の熱融着性合成樹脂を十分に溶融又は軟化させ、包装材１と縦シールテープ６とを必要な強度で安定的にヒートシールすることができる。   As described above, in the vertical seal tape sealing mechanism 18 of the liquid paper container forming apparatus according to the present invention, the two heater heads 4a and 4b for heating one edge 1a in the longitudinal direction of the strip-shaped packaging material 1 are Since it is arrange | positioned in series with respect to the flow direction of the packaging material 1, since one edge part 1a of the strip | belt-shaped packaging material 1 can be heated in multiple steps, it is lower temperature compared with the case where it heats in the conventional 1 step. Can be heated uniformly, and abrupt heating can be avoided, so that the heat-fusible synthetic resin on the back outermost layer of the packaging material 1 is sufficiently melted or softened without damaging the packaging material 1. And the vertical sealing tape 6 can be stably heat-sealed with the required strength, and the packaging material 1 is made of a heat-sealable synthetic resin having a high melting point or glass transition point as the outermost layer on the back surface. Even if the packaging material 1 is damaged It not sufficiently melted or softened backside outermost layer heat-sealable synthetic resin packaging material 1, can be stably heat sealing the packaging material 1 and the longitudinal sealing tape 6 at the required strength.

そして、前記２個のヒーターヘッド４ａ，４ｂのうち、最初に帯状の包装材１の長手方向の一方の縁部１ａを加熱することとなる初段ヒーターヘッド４ａが、他のヒーターヘッド４ｂよりも低い温度で該一方の縁部１ａを加熱するようになっていると、包装材１の急激な加熱が確実に回避され、包装材１に損傷を与えることがなく、包装材１の裏面最外層の熱融着性合成樹脂を十分に溶融又は軟化させることができる。   Of the two heater heads 4a and 4b, the first-stage heater head 4a that first heats one edge 1a in the longitudinal direction of the strip-shaped packaging material 1 is lower than the other heater heads 4b. When the one edge portion 1a is heated at a temperature, rapid heating of the packaging material 1 is reliably avoided, the packaging material 1 is not damaged, and the outermost layer of the back surface of the packaging material 1 is not damaged. The heat-fusible synthetic resin can be sufficiently melted or softened.

また、前記２個のヒーターヘッド４ａ、４ｂのうち、初段ヒーターヘッド４ａが、他のヒーターヘッド４ｂよりも小さい熱量で前記帯状の包装材１の長手方向の一方の縁部１ａを加熱するようになっていると、前記初段ヒーターヘッド４ａが、他のヒーターヘッド４ｂよりも低い温度で該一方の縁部１ａを加熱するようになっている場合と同様に、包装材１の急激な加熱が確実に回避され、包装材１に損傷を与えることがなく、包装材１の裏面最外層の熱融着性合成樹脂を十分に溶融又は軟化させることができる。   Of the two heater heads 4a and 4b, the first-stage heater head 4a heats one edge 1a in the longitudinal direction of the strip-shaped packaging material 1 with a smaller amount of heat than the other heater heads 4b. In this case, as in the case where the first stage heater head 4a heats the one edge 1a at a temperature lower than that of the other heater head 4b, the rapid heating of the packaging material 1 is ensured. Thus, the heat-fusible synthetic resin in the outermost layer on the back surface of the packaging material 1 can be sufficiently melted or softened without damaging the packaging material 1.

また、本例では、前記ヒーターヘッド４ａ，４ｂは、所定の温度に加熱された熱風を吹き出すようになっているので、加熱効率が良く、また、熱風の吹き出し量を制御するといった簡単な操作により、包装材１の長手方向の一方の縁部１ａに与える熱量を容易に調節することができる。   Further, in this example, the heater heads 4a and 4b blow out hot air heated to a predetermined temperature, so that the heating efficiency is good and a simple operation such as controlling the amount of hot air blown out is performed. The amount of heat applied to one edge 1a in the longitudinal direction of the packaging material 1 can be easily adjusted.

また、本発明に係る液体紙容器成形装置の縦シール機構２６では、チューブ状包装材１１の長手方向の他方の縁部１ｂ内面を加熱する２個のヒーターヘッド１２ａ，１２ｂが、チューブ状包装材１１の流れ方向に対して直列に配置されているので、チューブ状包装材１１の他方の縁部１ｂ内面を多段階で加熱できることから、従来の１段階で加熱した場合と比べ、より低い温度で均一に加熱でき、しかも急激な加熱を回避できるので、チューブ状包装材１１に損傷を与えることなく、チューブ状包装材１１の内側最外層の熱融着性合成樹脂を十分に溶融又は軟化させ、チューブ状包装材１１の一方の縁部１ａと他方の縁部１ｂ、及び、該一方の縁部１ａにヒートシールされてこの縁部１ａより延出している縦シールテープ６と他方の縁部１ｂとを必要な強度で安定的にヒートシールすることができ、前記チューブ状包装材１１を形成する帯状の包装材１が高い融点又はガラス転移点を有する熱融着性合成樹脂を裏面最外層（チューブ状包装材形成時の内側最外層）に用いたものであっても、チューブ状包装材１１の内側最外層の熱融着性合成樹脂を十分に溶融又は軟化させ、チューブ状包装材１１の一方の縁部１ａと他方の縁部１ｂ、及び、該一方の縁部１ａにヒートシールされてこの縁部１ａより延出している縦シールテープ６と他方の縁部１ｂとを必要な強度で安定的にヒートシールすることができる。   Further, in the vertical sealing mechanism 26 of the liquid paper container forming apparatus according to the present invention, the two heater heads 12a and 12b for heating the inner surface of the other edge portion 1b in the longitudinal direction of the tube-shaped packaging material 11 include the tube-shaped packaging material. Since it is arrange | positioned in series with respect to the flow direction of 11, since the other edge 1b inner surface of the tubular packaging material 11 can be heated in multiple steps, it is lower temperature compared with the case where it heats in the conventional 1 step. Since it can be heated uniformly and abrupt heating can be avoided, the heat-fusible synthetic resin of the innermost outer layer of the tubular packaging material 11 is sufficiently melted or softened without damaging the tubular packaging material 11, One edge 1a and the other edge 1b of the tube-shaped packaging material 11, and the vertical seal tape 6 and the other edge 1b which are heat-sealed to the one edge 1a and extend from the edge 1a. Can be stably heat-sealed with the required strength, and the belt-like packaging material 1 forming the tubular packaging material 11 is made of a heat-sealable synthetic resin having a high melting point or glass transition point on the back outermost layer (tube Even if it is used for the innermost outer layer at the time of forming the packaging material, the heat-fusible synthetic resin of the innermost outer layer of the tubular packaging material 11 is sufficiently melted or softened, and one of the tubular packaging materials 11 1a, the other edge 1b, and the vertical seal tape 6 that is heat-sealed to the one edge 1a and extends from the edge 1a and the other edge 1b are stabilized with the required strength. Can be heat-sealed.

そして、前記２個のヒーターヘッド１２ａ、１２ｂのうち、最初にチューブ状包装材１１の長手方向の他方の縁部１ｂ内面を加熱することとなる初段ヒーターヘッド１２ａが、他のヒーターヘッド１２ｂよりも低い温度で該他方の縁部１ｂ加熱するようになっていると、チューブ状包装材１１の急激な加熱が確実に回避され、チューブ状包装材１１に損傷を与えることがなく、チューブ状包装材１１の内側最外層の熱融着性合成樹脂を十分に溶融又は軟化させることができる。   Of the two heater heads 12a and 12b, the first-stage heater head 12a that first heats the inner surface of the other edge portion 1b in the longitudinal direction of the tubular packaging material 11 is more than the other heater heads 12b. When the other edge 1b is heated at a low temperature, the tube-shaped packaging material 11 is surely avoided from being heated rapidly, and the tube-shaped packaging material 11 is not damaged. 11 heat-fusible synthetic resin of the innermost outermost layer can be sufficiently melted or softened.

また、前記２個のヒーターヘッド１２ａ、１２ｂのうち、初段ヒーターヘッド１２ａが、他のヒーターヘッド１２ｂよりも小さい熱量で前記帯状の包装材１の長手方向の他方の縁部１ｂを加熱するようになっていると、前記初段ヒーターヘッド１２ａが、他のヒーターヘッド１２ｂよりも低い温度で該他方の縁部１ｂを加熱するようになっている場合と同様に、チューブ状包装材１１の急激な加熱が確実に回避され、チューブ状包装材１１に損傷を与えることがなく、チューブ状包装材１１の内側最外層の熱融着性合成樹脂を十分に溶融又は軟化させることができる。   Of the two heater heads 12a and 12b, the first stage heater head 12a heats the other edge 1b in the longitudinal direction of the strip-shaped packaging material 1 with a smaller amount of heat than the other heater heads 12b. In this case, as in the case where the first stage heater head 12a heats the other edge 1b at a lower temperature than the other heater heads 12b, rapid heating of the tubular packaging material 11 is performed. Is reliably avoided, the tube-shaped packaging material 11 is not damaged, and the heat-fusible synthetic resin of the innermost outermost layer of the tube-shaped packaging material 11 can be sufficiently melted or softened.

また、本例では、前記ヒーターヘッド１２ａ，１２ｂは、所定の温度に加熱された熱風を吹き出すようになっているので、加熱効率が良く、また、熱風の吹き出し量を制御するといった簡単な操作により、チューブ状包装材１１の長手方向の他方の縁部１ｂに与える熱量を容易に調節することができる。   Further, in this example, the heater heads 12a and 12b blow hot air heated to a predetermined temperature, so that the heating efficiency is good, and a simple operation such as controlling the amount of hot air blown is performed. The amount of heat applied to the other edge 1b in the longitudinal direction of the tubular packaging material 11 can be easily adjusted.

また、本発明に係る液体紙容器成形装置は、前記のように構成された縦シールテープシール機構１８及び縦シール機構２６を備えたので、包装材の裏面最外層として、様々な熱融着性合成樹脂を使い、該包装材を損傷すること無く、且つ、必要な強度で安定的にシールすることができるので、酸素バリア性や遮光性の低下、内容物の漏れや滲み、外部からの細菌混入による内容物の腐敗を起こすおそれのない液体紙容器を成形することができ、そのためのオペレーターの負担も少なく、更に、製品歩留り、操業効率の向上も図ることができる。   Moreover, since the liquid paper container forming apparatus according to the present invention includes the vertical seal tape sealing mechanism 18 and the vertical seal mechanism 26 configured as described above, various heat-sealing properties can be used as the outermost layer on the back surface of the packaging material. Uses a synthetic resin and can be stably sealed with the required strength without damaging the packaging material, resulting in reduced oxygen barrier properties and light shielding properties, leakage and bleeding of contents, bacteria from the outside It is possible to form a liquid paper container that does not cause the contents to be spoiled due to mixing, which reduces the burden on the operator, and further improves the product yield and operational efficiency.

なお、本例では、縦シールテープシール機構１８のヒーターヘッド４、及び、縦シール機構２６のヒーターヘッド１２は、それぞれ２個となっているが、これらのうち一方又は両方が３個以上でもよいことは勿論である。また、本例では、ヒーターヘッド４、ヒーターヘッド１２は熱風を熱源として加熱を行うようになっているが、超音波や電磁誘導加熱等、他の公知の加熱機構を利用したものを用いることもできる。   In this example, there are two heater heads 4 of the vertical seal tape seal mechanism 18 and two heater heads 12 of the vertical seal mechanism 26, but one or both of them may be three or more. Of course. In this example, the heater head 4 and the heater head 12 are heated using hot air as a heat source, but those using other known heating mechanisms such as ultrasonic waves and electromagnetic induction heating may be used. it can.

本発明に係る縦シールテープシール機構及び縦シール機構を備えた液体紙容器成形装置における液体紙容器の成形、充填、密封を行う各工程の概略図である。It is the schematic of each process which shape | molds, fills, and seals a liquid paper container in the liquid paper container forming apparatus provided with the vertical seal tape sealing mechanism and vertical seal mechanism which concern on this invention. 図１に示す各工程の概略図における縦シールテープシール機構の詳細を示す斜視図であるIt is a perspective view which shows the detail of the vertical seal tape sealing mechanism in the schematic of each process shown in FIG. 図２に示す縦シールテープシール機構に設けたヒーターヘッド操作部を示す説明図である。It is explanatory drawing which shows the heater head operation part provided in the vertical seal tape sealing mechanism shown in FIG. 図２に示す縦シールテープシール機構に設けたヒーターヘッドにおける熱風吹き出し口の説明図である。It is explanatory drawing of the hot air blower outlet in the heater head provided in the vertical seal tape sealing mechanism shown in FIG. 図１に示す各工程の概略図における縦シール機構の詳細を示す斜視図である。It is a perspective view which shows the detail of the vertical seal | sticker mechanism in the schematic of each process shown in FIG. 図５に示す縦シール機構に設けたヒーターヘッドの側面図である。It is a side view of the heater head provided in the vertical seal mechanism shown in FIG. 図５に示す縦シール機構に設けたヒーターヘッド操作部を示す説明図である。It is explanatory drawing which shows the heater head operation part provided in the vertical seal | sticker mechanism shown in FIG. 従来の縦シールテープシール機構及び縦シール機構を備えた液体紙容器成形装置における液体紙容器の成形、充填、密封を行う各工程の概略図である。It is the schematic of each process which shape | molds, fills, and seals a liquid paper container in the liquid paper container forming apparatus provided with the conventional vertical seal tape sealing mechanism and the vertical seal mechanism.

符号の説明Explanation of symbols

１ 包装材
１ａ 一方の縁部
１ｂ 他方の縁部
２ 巻き取りロール
３ ガイドローラー
４、４ａ、４ｂ ヒーターヘッド
５ 縦シールテープ繰り出し装置
６ 縦シールテープ
７ 圧着ローラー
８ 殺菌液層
９ 無菌チャンバー
１０ 成形用フォーミングローラー
１１ チューブ状包装材
１２、１２ａ、１２ｂ ヒーターヘッド
１３ 包材チューブ
１４ 充填パイプ
１５ 横シール工程
１６ 包装体
１７ 液体紙容器
１８ 縦シールテープシール機構
１９ 配管
２０ 加熱面
２１ 吹き出し口
２２ 孔
２３ スリット
２４ ヒーターヘッド操作部
２５ エアシリンダー
２６ 縦シール機構
２７ 配管
２８ 加熱面
２９ 吹き出し口
３０ ヒーターヘッド操作部
３１ エアシリンダー DESCRIPTION OF SYMBOLS 1 Packaging material 1a One edge part 1b The other edge part 2 Winding roll 3 Guide roller 4, 4a, 4b Heater head 5 Vertical seal tape delivery apparatus 6 Vertical seal tape 7 Crimping roller 8 Sterilization liquid layer 9 Aseptic chamber 10 For shaping | molding Forming roller 11 Tubular packaging material 12, 12a, 12b Heater head 13 Packaging tube 14 Filling pipe 15 Horizontal sealing process 16 Packaging 17 Liquid paper container 18 Vertical sealing tape sealing mechanism 19 Pipe 20 Heating surface 21 Outlet 22 Hole 23 Slit 24 Heater head operation unit 25 Air cylinder 26 Vertical seal mechanism 27 Piping 28 Heating surface 29 Air outlet 30 Heater head operation unit 31 Air cylinder

Claims (7)

板紙をベース層とし、熱融着性合成樹脂を前記ベース層の表裏両面の最外層とする帯状の包装材から形成される、紙容器の内面に露出する縦方向の継ぎ目を縦シールテープで被覆してなる液体紙容器を成形する装置において使用される、前記帯状の包装材の長手方向の一方の縁部と縦シールテープとをヒートシールするための縦シールテープシール機構であって、
前記帯状の包装材の長手方向の一方の縁部を加熱するヒーターヘッドが２個以上、包装材の流れ方向に対して直列に配置されていることを特徴とする縦シールテープシール機構。 Covered with vertical seal tape on the seam in the vertical direction exposed on the inner surface of the paper container, formed from a strip-shaped packaging material with paperboard as the base layer and heat-sealable synthetic resin as the outermost layer on both sides of the base layer A vertical sealing tape sealing mechanism for heat-sealing one edge of the strip-shaped packaging material in the longitudinal direction and the vertical sealing tape, which is used in an apparatus for forming a liquid paper container,
Two or more heater heads that heat one edge in the longitudinal direction of the strip-shaped packaging material are arranged in series with respect to the flow direction of the packaging material. 前記２個以上のヒーターヘッドのうち、最初に帯状の包装材の長手方向の一方の縁部を加熱することとなる初段ヒーターヘッドは、他のヒーターヘッドよりも低い温度で該一方の縁部を加熱するようになっていることを特徴とする請求項１記載の縦シールテープシール機構。   Of the two or more heater heads, the first stage heater head, which first heats one edge in the longitudinal direction of the strip-shaped packaging material, has the one edge at a lower temperature than the other heater head. 2. The vertical sealing tape sealing mechanism according to claim 1, wherein the vertical sealing tape sealing mechanism is heated. 前記２個以上のヒーターヘッドのうち、最初に帯状の包装材の長手方向の一方の縁部を加熱することとなる初段ヒーターヘッドは、他のヒーターヘッドよりも小さい熱量で該一方の縁部を加熱するようになっていることを特徴とする請求項１記載の縦シールテープシール機構。   Of the two or more heater heads, the first stage heater head, which first heats one edge in the longitudinal direction of the belt-shaped packaging material, has the one edge with a smaller amount of heat than the other heater head. 2. The vertical sealing tape sealing mechanism according to claim 1, wherein the vertical sealing tape sealing mechanism is heated. 板紙をベース層とし、熱融着性合成樹脂を前記ベース層の表裏両面の最外層とする帯状の包装材から形成される、紙容器の内面に露出する縦方向の継ぎ目を縦シールテープで被覆してなる液体紙容器を成形する装置において使用される、前記帯状の包装材から形成されたチューブ状包装材の長手方向の一方の縁部と他方の縁部、及び、該一方の縁部にヒートシールされてこの縁部より延出している縦シールテープと他方の縁部とをヒートシールするための縦シール機構であって、
前記チューブ状包装材の長手方向の他方の縁部内面を加熱するヒーターヘッドが２個以上、チューブ状包装材の流れ方向に対して直列に配置されていることを特徴とする縦シール機構。 Covered with vertical seal tape on the seam in the vertical direction exposed on the inner surface of the paper container, formed from a strip-shaped packaging material with paperboard as the base layer and heat-sealable synthetic resin as the outermost layer on both sides of the base layer One edge and the other edge in the longitudinal direction of the tube-shaped packaging material formed from the band-shaped packaging material used in the apparatus for forming a liquid paper container, and the one edge A vertical seal mechanism for heat-sealing the vertical seal tape that is heat-sealed and extending from this edge, and the other edge,
Two or more heater heads for heating the inner surface of the other edge in the longitudinal direction of the tubular packaging material are arranged in series with respect to the flow direction of the tubular packaging material. 前記２個以上のヒーターヘッドのうち、最初にチューブ状包装材の長手方向の他方の縁部内面を加熱することとなる初段ヒーターヘッドは、他のヒーターヘッドよりも低い温度で該他方の縁部内面を加熱するようになっていることを特徴とする請求項４に記載の縦シール機構。   Of the two or more heater heads, the first-stage heater head that first heats the inner surface of the other edge in the longitudinal direction of the tubular packaging material is the other edge at a lower temperature than the other heater heads. The vertical sealing mechanism according to claim 4, wherein the inner surface is heated. 前記２個以上のヒーターヘッドのうち、最初にチューブ状包装材の長手方向の他方の縁部内面を加熱することとなる初段ヒーターヘッドは、他のヒーターヘッドよりも小さい熱量で該他方の縁部内面を加熱するようになっていることを特徴とする請求項４に記載の縦シール機構。   Of the two or more heater heads, the first stage heater head that first heats the inner surface of the other edge in the longitudinal direction of the tube-shaped packaging material has a smaller amount of heat than the other heater head. The vertical sealing mechanism according to claim 4, wherein the inner surface is heated. 請求項１に記載の縦シールテープシール機構及び／又は請求項４に記載の縦シール機構を備えたことを特徴とする液体紙容器成形装置。   A liquid paper container forming apparatus comprising the vertical seal tape sealing mechanism according to claim 1 and / or the vertical seal mechanism according to claim 4.
JP2006096576A 2006-03-31 2006-03-31 Longitudinal seal tape sealing mechanism, longitudinal sealing mechanism, and liquid paper-made container forming device Pending JP2007269353A (en)

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JP2018127238A (en) * 2017-02-07 2018-08-16 株式会社Ｎｅｗ ＩＷＡＳＨＯ Sealing device

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