WO2022092276A1 - 注出口付き包装袋及び注出口付き包装袋の製造方法 - Google Patents

注出口付き包装袋及び注出口付き包装袋の製造方法 Download PDF

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Publication number
WO2022092276A1
WO2022092276A1 PCT/JP2021/040068 JP2021040068W WO2022092276A1 WO 2022092276 A1 WO2022092276 A1 WO 2022092276A1 JP 2021040068 W JP2021040068 W JP 2021040068W WO 2022092276 A1 WO2022092276 A1 WO 2022092276A1
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WO
WIPO (PCT)
Prior art keywords
spout
base
packaging bag
polyethylene
container body
Prior art date
Application number
PCT/JP2021/040068
Other languages
English (en)
French (fr)
Inventor
敏彦 森
弘嗣 桑原
直人 藤川
Original Assignee
藤森工業株式会社
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 藤森工業株式会社 filed Critical 藤森工業株式会社
Priority to JP2022559268A priority Critical patent/JPWO2022092276A1/ja
Priority to US18/033,284 priority patent/US20230391528A1/en
Priority to EP21886393.4A priority patent/EP4238883A1/en
Priority to CN202180071831.6A priority patent/CN116490434A/zh
Publication of WO2022092276A1 publication Critical patent/WO2022092276A1/ja

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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
    • B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/52—Details
    • B65D75/58—Opening or contents-removing devices added or incorporated during package manufacture
    • B65D75/5861—Spouts
    • B65D75/5872—Non-integral spouts
    • B65D75/5883—Non-integral spouts connected to the package at the sealed junction of two package walls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B29C65/20—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools with direct contact, e.g. using "mirror"
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B29C65/20—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools with direct contact, e.g. using "mirror"
    • B29C65/2053—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools with direct contact, e.g. using "mirror" characterised by special ways of bringing the welding mirrors into position
    • B29C65/2061—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools with direct contact, e.g. using "mirror" characterised by special ways of bringing the welding mirrors into position by sliding
    • B29C65/2069—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools with direct contact, e.g. using "mirror" characterised by special ways of bringing the welding mirrors into position by sliding with an angle with respect to the plane comprising the parts to be joined
    • B29C65/2076—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools with direct contact, e.g. using "mirror" characterised by special ways of bringing the welding mirrors into position by sliding with an angle with respect to the plane comprising the parts to be joined perpendicularly to the plane comprising the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/72—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by combined operations or combined techniques, e.g. welding and stitching
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • 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
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/53—Joining single elements to tubular articles, hollow articles or bars
    • B29C66/532—Joining single elements to the wall of tubular articles, hollow articles or bars
    • B29C66/5326—Joining single elements to the wall of tubular articles, hollow articles or bars said single elements being substantially flat
    • B29C66/53261—Enclosing tubular articles between substantially flat elements
    • B29C66/53262—Enclosing spouts between the walls of bags, e.g. of medical bags
    • B29C66/53263—Enclosing spouts between the walls of bags, e.g. of medical bags said spouts comprising wings, e.g. said spouts being of ship-like or canoe-like form to avoid leaks in the corners
    • 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
    • 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
    • B29C66/737—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 state of the material of the parts to be joined
    • B29C66/7371—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 state of the material of the parts to be joined oriented or heat-shrinkable
    • B29C66/73711—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 state of the material of the parts to be joined oriented or heat-shrinkable oriented
    • B29C66/73713—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 state of the material of the parts to be joined oriented or heat-shrinkable oriented bi-axially or multi-axially
    • 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
    • B29C66/83221—Joining or pressing tools reciprocating along one axis cooperating reciprocating tools, each tool reciprocating along one axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—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
    • B29C66/919—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges
    • 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
    • B29C66/94—Measuring or controlling the joining process by measuring or controlling the time
    • B29C66/949—Measuring or controlling the joining process by measuring or controlling the time characterised by specific time values or ranges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/74—Auxiliary operations
    • B31B70/81—Forming or attaching accessories, e.g. opening devices, closures or tear strings
    • B31B70/84—Forming or attaching means for filling or dispensing contents, e.g. valves or spouts
    • B31B70/844—Applying rigid valves, spouts, or filling tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60P—VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
    • B60P7/00—Securing or covering of load on vehicles
    • 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
    • B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/008—Standing pouches, i.e. "Standbeutel"
    • 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
    • B29C65/70—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by moulding
    • 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
    • B29C66/735—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 extensive physical properties of the parts to be joined
    • B29C66/7352—Thickness, e.g. very thin
    • 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
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/04—Polymers of ethylene
    • B29K2023/06—PE, i.e. polyethylene
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/712—Containers; Packaging elements or accessories, Packages
    • B29L2031/7128—Bags, sacks, sachets
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • 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
    • B65D2207/00—Standing packages
    • 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
    • B65D2575/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes or webs of flexible sheet material, e.g. in folded wrappers
    • B65D2575/52—Details
    • B65D2575/58—Opening or contents-removing devices added or incorporated during package manufacture
    • B65D2575/583—Opening or contents-removing devices added or incorporated during package manufacture the non-integral spout having an elongate cross-sectional shape, e.g. canoe or boat shaped

Definitions

  • the present invention relates to a packaging bag with a spout and a method for manufacturing a packaging bag with a spout.
  • the present application claims priority based on Japanese Patent Application No. 2020-182338 filed in Japan on October 30, 2020, the contents of which are incorporated herein by reference.
  • Standing pouches are widely used as refill containers for shampoo and conditioner.
  • the pouch body of a standing pouch is composed of a laminated film.
  • the laminated film imparts various functions such as barrier property and strength to the refill container by combining a plurality of materials having different characteristics.
  • Patent Document 1 describes a standing pouch in which a film using plant-derived polyethylene is used as a sealant film as a recyclable resource.
  • Standing pouches are required to be able to easily and quickly refill their contents.
  • the spout is required to be easily opened by hand.
  • a film material using, for example, polyethylene as a single material has a problem that it is difficult to cut by hand and it is difficult to open it easily.
  • the present invention has been made in view of the above circumstances, and is a method for manufacturing a packaging bag with a spout and a packaging bag with a spout, which are made of a single film material, are easy to open, and are easy to recycle.
  • the purpose is to provide.
  • a container body for accommodating the contents and a spout member for pouring out the contents in the container body are provided, and the spout member includes a base attached to the container body and the said.
  • a packaging bag with a spout which has a spout cylinder portion in which a flow path for pouring the contents is formed, the container body is made of a polyethylene film, and the spout member is a polyethylene molded body. ..
  • the packaging bag with a spout according to [1] or [2], which is a standing pouch.
  • a method for manufacturing a packaging bag with a spout comprising a container body for accommodating contents and a spout member for pouring out the contents in the container body.
  • the container body is made of a polyethylene film, and the spout member is polyethylene.
  • a method for manufacturing a packaging bag with a spout which comprises a step of inserting the base and heat-welding using a mold.
  • the temperature of the surface of the mold in contact with the side surface of the base is set to 130 ° C. or higher and 230 ° C. or lower, and the mold is placed on the side surface of the base portion for 0.5 seconds or longer and 3.0.
  • the mold has a three-dimensional shape on the surface in contact with the side surface of the base, and the heating step is a step of transferring the three-dimensional shape to the side surface of the base, [4] to [6]. ].
  • the method for manufacturing a packaging bag with a spout according to any one of the above.
  • a packaging bag with a spout and a packaging bag with a spout which are made of a single film material, are easy to open, and are easy to recycle.
  • FIG. 1 It is a schematic diagram which shows an example of the packaging bag with a spout of this embodiment. It is a partial cross-sectional view of the packaging bag with a spout of this embodiment. It is a top view of the base part and the pouring cylinder part of a spout member. It is a schematic diagram for demonstrating the manufacturing method of the packaging bag with a spout of this embodiment.
  • FIG. 1 is an overall view of the packaging bag 10 with a spout.
  • FIG. 2 shows a partial cross-sectional view of the packaging bag 10 with a spout according to the embodiment.
  • FIG. 2 is a plan view of the base 6 of the spout member 2 and the spout cylinder portion 7.
  • FIG. 3 is a plan view of the base 6 of the spout member 2 and the spout cylinder 7.
  • the packaging bag 10 with a spout (hereinafter, simply referred to as a packaging bag 10) of the embodiment includes a container main body 1 and a spout member 2.
  • the container body 1 is, for example, a standing pouch composed of two body films 51 and 51 having the same planar shape and a bottom film 12.
  • the container body 1 is provided with an inclined portion 30 at one corner of a portion that becomes an upper portion when the bottom film 12 side is used as the bottom portion to stand on its own.
  • the body film 51, 51 and the bottom film 12 are integrally formed by heat-sealing the peripheral portion.
  • the packaging bag 10 has a side end sealing portion 11a and a bottom sealing portion 12a.
  • the side end sealing portion 11a is formed by sealing the side end portions on both sides of the body film 51, 51.
  • the bottom sealing portion 12a is formed by sealing the body films 51 and 51 and the bottom film 12.
  • the bottom film 12 is interposed between the body films 51 and 51.
  • the contents can be filled in the accommodating portion 10a of the packaging bag 10.
  • the packaging bag 10 filled with the contents in the accommodating portion 10a can stand on its own with the bottom film 12 facing down (upright state).
  • the contents are not particularly limited, and examples thereof include liquids, solids such as powders and granules, viscous bodies, liquids, and the like, or mixtures thereof.
  • the film used as the body film 51 and the bottom film 12 is made of a polyethylene film.
  • the polyethylene film is preferably composed of a stretched polyethylene layer and an unstretched polyethylene layer.
  • the unstretched polyethylene layer becomes a heat seal layer.
  • the container body 1 has an unstretched polyethylene layer on the content side.
  • the thickness of the unstretched polyethylene layer is, for example, 60 ⁇ m or more and 180 ⁇ m or less.
  • the stretched polyethylene layer is the outermost layer on the side opposite to the side in contact with the contents, and the product name, decoration, etc. may be printed.
  • the stretched polyethylene layer is preferably biaxially stretched polyethylene.
  • the thickness of the stretched polyethylene layer is, for example, 10 ⁇ m or more and 50 ⁇ m or less.
  • Polyethylene which is a material for forming a polyethylene film, may be composed of only one type of polyethylene, or may be used in combination with two or more types of polyethylene.
  • the two or more types of polyethylene are, for example, two or more types of polyethylene having different grades.
  • polyethylene used as a material for forming a polyethylene film examples include high-density polyethylene or medium-density polyethylene having a density of 0.926 g / cm 3 or more, and low-density polyethylene or linear low-density polyethylene having a density of 0.925 g / cm 3 or less. Can be used.
  • the stretched polyethylene layer is preferably made of high-density polyethylene as a forming material
  • the unstretched polyethylene layer is preferably made of low-density polyethylene as a forming material.
  • a polyethylene film can be produced by co-extruding a film that is a material for forming a stretched polyethylene layer and a film that is a material for forming an unstretched polyethylene layer.
  • the spout member 2 is provided on the inclined portion 30.
  • the spout member 2 includes a base portion 6, a spout cylinder portion 7, and a cap 5.
  • the base 6 is attached to the container body 1 in a state of being sandwiched between the body films 51 and 51.
  • One and the other side surfaces 6c and 6c of the base 6 are welded to the inner surfaces of the body films 51 and 51, respectively.
  • the dispensing cylinder portion 7 has a cylindrical shape. A part of the dispensing cylinder portion 7 (upper part in FIG. 2) protrudes in the Z direction (upper side in FIG. 2) from the first end surface 6a (upper surface in FIG. 2) of the base portion 6. The portion where the dispensing cylinder portion 7 protrudes from the first end surface 6a is referred to as a protruding portion 9. In FIG. 2, 6b is the second end surface of the base 6.
  • the planar shape (shape seen from the Z direction) of the flow path 8 which is the internal space of the dispensing cylinder portion 7 is, for example, a circular shape.
  • the flow path 8 can discharge the contents of the container body 1 from the spout port 7b, which is an opening on the tip 7c side of the pouring cylinder portion 7.
  • a screw portion 23 is formed on the outer peripheral surface of the protruding portion 9 of the dispensing cylinder portion 7.
  • 7d is the base end of the dispensing cylinder portion 7.
  • C1 is the central axis of the dispensing cylinder portion 7.
  • the base portion 6, the cap 5, and the injection cylinder portion 7 are polyethylene molded bodies.
  • the base portion 6, the dispensing cylinder portion 7 and the cap 5 can be manufactured by injection molding or the like.
  • the dispensing cylinder portion 7 may be manufactured by a 3D printer. By using a 3D printer, the degree of freedom in designing the dispensing cylinder portion 7 is increased.
  • the packaging bag 10 shown in FIG. 1 is a standing pouch, but the form of the pouch applicable to the packaging bag of the present embodiment is not particularly limited to this, and various forms such as a three-way seal bag, a four-way seal bag, and a gusset bag can be used. It is possible to adopt. Above all, the packaging bag 10 is preferably a standing pouch.
  • the present embodiment is a method for manufacturing a packaging bag with a spout, which comprises a container body for accommodating the contents and a spout member for pouring out the contents in the container body.
  • a set of body film 51 and a bottom film 12 are heat-welded to form a side end sealing portion 11a and a bottom sealing portion 12a.
  • the heated mold 100 is brought into contact with the side surface 6c of the base 6 of the spout member 2 shown in FIG. 4A, and only the circumferential surface of the base 6 is heated to a temperature equal to or higher than the melting point of polyethylene.
  • the temperature of the surface of the mold in contact with the side surface 6c of the base 6 is set to 130 ° C. or higher and 230 ° C. or lower, and the mold is brought into contact with the side surface 6c of the base 6 for 0.5 seconds or longer and 3.0 seconds or lower. Is preferable.
  • polyethylene melts only on the surface of the base 6 in the circumferential direction.
  • the base 6 in which polyethylene is melted only on the surface in the circumferential direction is inserted into the container body 1.
  • the base portion 6 is inserted into the container body 1 so that the second end surface 6b of the base portion 6 and the inclined portion 30 of the container body 1 are parallel to each other.
  • the side surface 6c of the base 6 and the body film 51 are heat-welded using the mold 100 with the base 6 sandwiched between a set of body films 51. do.
  • the heat-welded portion 11c and the joint portion 16 shown in FIG. 1 are formed.
  • the heat-welded portion 11c is a portion where the body films 51 are heat-welded to each other.
  • the joint portion 16 is a portion where the body portion film 51 and the base portion 6 are heat-welded with the base portion 6 sandwiched between the body portion films 51.
  • the temperature of the surface of the mold in contact with the base 6 and the heat welded portion 11c is set to 120 ° C. or higher and 220 ° C. or lower, and the mold is placed on the base 6 and the heat welded portion 11c for 0.4 seconds or longer and 3.0. It is preferable to make contact for a second or less.
  • PET film polyethylene terephthalate film
  • the container body 1 is made of a polyethylene film. Since the polyethylene film has a low melting point of 140 ° C. or lower, it is difficult to heat-weld the spout member without melting the polyethylene film. To solve such a problem, by bringing the base 6 of the spout member 2 into contact with the mold and melting it, it is possible to heat-weld the spout member without melting the polyethylene film.
  • polyethylene is used as a forming material for both the body film 51 and the base 6.
  • Polyethylenes have similar tendencies to soften and melt due to heating. Therefore, the degree of softening, melting and mixing for heat welding is likely to proceed, and a stronger welded state is likely to be formed after cooling.
  • the surface of the mold in contact with the side surface 6c of the base 6 is mold-released.
  • affixing a Teflon (registered trademark) tape or coating with a fluororesin is preferable.
  • the surface of the mold in contact with the side surface 6c of the base portion 6 has a three-dimensional shape.
  • the three-dimensional shape include a fine uneven shape.
  • the packaging bag of the present invention is easy to open because it is provided with a spout member, and is easy to recycle because it is made of a single film material.
  • Packaging bag 10a storage part, 11a side end seal part, 11c heat welding part, 12 bottom film, 12a bottom seal part, 16 joint part, 23 screw part, 30 inclined part, 51 body film, 100 mold

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Abstract

内容物を収容する容器本体と、前記容器本体内の前記内容物を注出させるための注出口部材と、を備え、前記注出口部材は、前記容器本体に取り付けられる基部と、前記内容物を注出する流路が形成された注出筒部と、を有し、前記容器本体は、ポリエチレンフィルムからなり、前記注出口部材は、ポリエチレンの成形体である、注出口付き包装袋。

Description

注出口付き包装袋及び注出口付き包装袋の製造方法
　本発明は、注出口付き包装袋及び注出口付き包装袋の製造方法に関する。
　本願は、２０２０年１０月３０日に、日本に出願された特願２０２０－１８２３３８号に基づき優先権を主張し、その内容をここに援用する。
　シャンプーやコンディショナー等の詰め替え容器として、スタンディングパウチが普及している。一般的にスタンディングパウチのパウチ本体は、積層フィルムから構成される。積層フィルムは、特性の異なる複数の素材を組み合わせることで、バリア性や強度等の各種機能を詰め替え容器に付与している。
　近年、資源を有効利用する観点から、リサイクルが可能である材料を用い、石油資源を節約することが求められている。しかし、複数の素材が組み合わされた積層フィルムは素材の分別に手間がかかり、リサイクルがしにくいという課題があった。このような課題に対し、リサイクルに適した材料として、単一素材（モノマテリアル）のフィルム材料を用いた容器が検討されている。
　例えば特許文献１には、リサイクルが可能である資源として、植物由来ポリエチレンを用いたフィルムをシーラントフィルムとする、スタンディングパウチが記載されている。
特開２０１２－１６７１７２号公報
　スタンディングパウチには、内容物を簡単に素早く詰め替えられることが求められる。例えば注ぎ口は手で簡単に開封できることが求められる。
　しかし、単一素材として例えばポリエチレンを用いたフィルム材料は、手で切りにくく、簡単には開封しにくいという課題があった。
　本発明は上記事情に鑑みてなされたものであって、単一素材のフィルム材料から構成され、開封が容易であり、リサイクルが容易な注出口付き包装袋及び前記注出口付き包装袋の製造方法を提供することを目的とする。
　すなわち、本発明は以下の構成を採用した。
［１］内容物を収容する容器本体と、前記容器本体内の前記内容物を注出させるための注出口部材と、を備え、前記注出口部材は、前記容器本体に取り付けられる基部と、前記内容物を注出する流路が形成された注出筒部と、を有し、前記容器本体は、ポリエチレンフィルムからなり、前記注出口部材は、ポリエチレンの成形体である、注出口付き包装袋。
［２］前記ポリエチレンフィルムは、延伸ポリエチレン層と、未延伸ポリエチレン層とからなる、［１］に記載の注出口付き包装袋。
［３］スタンディングパウチである、［１］又は［２］に記載の注出口付き包装袋。
［４］内容物を収容する容器本体と、前記容器本体内の前記内容物を注出させるための注出口部材と、を備える注出口付き包装袋の製造方法であって、前記注出口部材は、前記容器本体に取り付けられる基部と、前記内容物を注出する流路が形成された注出筒部と、を有し、前記容器本体は、ポリエチレンフィルムからなり、前記注出口部材は、ポリエチレンの成形体であり、前記基部の側面に、熱した金型を接触させて前記基部の周方向の表面のみを前記ポリエチレンの融点以上の温度に加熱する工程と、前記容器本体に、加熱後の前記基部を挿入し、金型を用いて熱溶着させる工程と、を有する注出口付き包装袋の製造方法。
［５］前記加熱する工程は、前記基部の側面に接する前記金型の表面の温度を１３０℃以上２３０℃以下に設定し、前記金型を前記基部の側面に０．５秒間以上３．０秒間以下接触させる工程である、［４］に記載の注出口付き包装袋の製造方法。
［６］前記金型は、前記基部の側面に接する面が離型処理されている、［４］又は［５］に記載の注出口付き包装袋の製造方法。
［７］前記金型は、前記基部の側面に接する面が３次元形状を備え、前記加熱する工程は、前記基部の側面に前記３次元形状を転写する工程である、［４］～［６］のいずれか１つに記載の注出口付き包装袋の製造方法。
　本発明によれば、単一素材のフィルム材料から構成され、開封が容易であり、リサイクルが容易な注出口付き包装袋及び前記注出口付き包装袋の製造方法を提供することができる。
本実施形態の注出口付き包装袋の一例を示す模式図である。 本実施形態の注出口付き包装袋の一部断面図である。 注出口部材の基部および注出筒部の平面図である。 本実施形態の注出口付き包装袋の製造方法を説明するための模式図である。
　以下、本発明の実施形態につき、図面を参照して説明する。なお、以下の説明に用いる各図面では、各部材を認識可能な大きさとするため、各部材の縮尺を適宜変更している場合がある。
　図１は、注出口付き包装袋１０の全体図である。
　図２に、実施形態の注出口付き包装袋１０の一部断面図を示す。図２は、注出口部材２の基部６および注出筒部７の平面図である。図３は、注出口部材２の基部６および注出筒部７の平面図である。
　図１に示すように、実施形態の注出口付き包装袋１０（以下、単に包装袋１０という。）は、容器本体１と、注出口部材２とを備える。容器本体１は、例えば、互いに平面形状が同一である２枚の胴部フィルム５１、５１と、底部フィルム１２とから構成されたスタンディングパウチである。
　容器本体１は、底部フィルム１２側を底部として自立させた際に上部となる部分の一方の角部に、傾斜部３０を備える。
　胴部フィルム５１、５１と底部フィルム１２とは、周縁部がヒートシールされることで一体に形成されている。例えば、包装袋１０は、側端シール部１１ａと、底部シール部１２ａと、を有する。側端シール部１１ａは、胴部フィルム５１、５１の両側の側端部がシールされることで形成される。底部シール部１２ａは、胴部フィルム５１、５１と底部フィルム１２とがシールされることで形成される。底部フィルム１２は、胴部フィルム５１、５１の間に介装されている。
　包装袋１０の収容部１０ａには内容物を充てんすることができる。収容部１０ａ内に内容物が充てんされた包装袋１０は、底部フィルム１２を下にした状態（正立状態）で自立が可能となる。内容物は、特に限定されないが、液状物、粉体や顆粒体等の固体、あるいは粘稠体、液体等、あるいはこれらの混合物などが挙げられる。
　胴部フィルム５１および底部フィルム１２として使用するフィルムは、ポリエチレンフィルムからなる。ポリエチレンフィルムは、延伸ポリエチレン層と、未延伸ポリエチレン層とからなることが好ましい。
　未延伸ポリエチレン層はヒートシール層となる。容器本体１は未延伸ポリエチレン層を内容物側に有する。
　未延伸ポリエチレン層の厚みは、例えば６０μｍ以上１８０μｍ以下である。
　延伸ポリエチレン層は内容物と接する側とは反対側の最外層となり、商品名や装飾等が印刷されていてもよい。
　延伸ポリエチレン層は、２軸延伸ポリエチレンであることが好ましい。
　延伸ポリエチレン層の厚みは、例えば１０μｍ以上５０μｍ以下である。
　ポリエチレンフィルムの形成材料であるポリエチレンは、１種のポリエチレンのみで構成されていてもよく、２種以上のポリエチレンを併用して用いてもよい。２種以上のポリエチレンとは、例えばグレードの異なる２種以上のポリエチレンである。
　ポリエチレンフィルムの形成材料であるポリエチレンとしては、密度が０．９２６ｇ／ｃｍ３以上の高密度ポリエチレン又は中密度ポリエチレン、密度が０．９２５ｇ／ｃｍ３以下の低密度ポリエチレン又は直鎖状低密度ポリエチレンが使用できる。
　本実施形態において、延伸ポリエチレン層は、高密度ポリエチレンを形成材料とすることが好ましく、未延伸ポリエチレン層は低密度ポリエチレンを形成材料とすることが好ましい。
　延伸ポリエチレン層の形成材料であるフィルムと、未延伸ポリエチレン層の形成材料であるフィルムとを共押出することにより、ポリエチレンフィルムを製造することができる。
　図１に示すように、注出口部材２は、傾斜部３０に設けられている。
　注出口部材２は、基部６と、注出筒部７と、キャップ５とを備える。
　図３に示すように、基部６は、胴部フィルム５１、５１に挟み込まれた状態で容器本体１に取り付けられている。基部６の一方および他方の側面６ｃ、６ｃは、それぞれ胴部フィルム５１、５１の内面に溶着されている。
　注出筒部７は、円筒状とされている。注出筒部７の一部（図２における上部）は、基部６の第１端面６ａ（図２における上面）から、Ｚ方向（図２における上方）に突出している。注出筒部７が第１端面６ａから突出した部分を突出部分９という。図２中、６ｂは基部６の第２端面である。
　図３に示すように、注出筒部７の内部空間である流路８の平面形状（Ｚ方向から見た形状）は、例えば円形状である。図２に示すように、流路８は、容器本体１の内容物を注出筒部７の先端７ｃ側の開口である注出口７ｂから注出させることができる。注出筒部７の突出部分９の外周面には、ネジ部２３が形成されている。７ｄは注出筒部７の基端である。Ｃ１は注出筒部７の中心軸である。
　基部６、キャップ５及び注出筒部７は、ポリエチレンの成形体である。
　基部６、注出筒部７およびキャップ５は、射出成形などにより作製することができる。
　注出筒部７は、３Ｄプリンタによって作製してもよい。３Ｄプリンタを使用することによって、注出筒部７の設計の自由度が高められる。
　本発明は上述の実施形態に限定されず、本発明の要旨を逸脱しない範囲で種々の改変が可能である。
　図１に示す包装袋１０はスタンディングパウチであるが、本実施形態の包装袋に適用可能なパウチの形態は特にこれに限定されず、三方シール袋、四方シール袋、ガゼット袋など種々の形態を採用することが可能である。なかでも、包装袋１０はスタンディングパウチであることが好ましい。
＜注出口付き包装袋の製造方法＞
　本実施形態は、内容物を収容する容器本体と、容器本体内の内容物を注出させるための注出口部材と、を備える注出口付き包装袋の製造方法である。
　まず、容器本体１を製造するために、一組の胴部フィルム５１と、底部フィルム１２とを熱溶着させ、側端シール部１１ａ、底部シール部１２ａを形成する。
　図４（ａ）に示す注出口部材２の基部６の側面６ｃに、熱した金型１００を接触させて基部６の周方向の表面のみをポリエチレンの融点以上の温度に加熱する。
　具体的には、基部６の側面６ｃに接する金型の表面の温度を１３０℃以上２３０℃以下に設定し、金型を基部６の側面６ｃに０．５秒間以上３．０秒間以下接触させることが好ましい。
　この工程により、基部６の周方向の表面のみのポリエチレンが溶融する。
　次に、図４（ｂ）に示すように、周方向の表面のみのポリエチレンが溶融した基部６を容器本体１に挿入する。このとき、基部６の第２端面６ｂと、容器本体１の傾斜部３０とが平行となるよう、基部６を容器本体１に挿入する。
　挿入後、図４（ｃ）に示すように、一組の胴部フィルム５１の間に基部６を挟み込んだ状態で、金型１００を用いて基部６の側面６ｃ及び胴部フィルム５１を熱溶着する。これにより、図１に示す熱溶着部１１ｃ、接合部１６が形成される。熱溶着部１１ｃは、胴部フィルム５１同士が熱溶着した部分である。接合部１６は、胴部フィルム５１の間に基部６を挟み込んだ状態で、胴部フィルム５１と基部６とが熱溶着した部分である。
　本実施形態において、基部６及び熱溶着部１１ｃに接する金型の表面の温度を１２０℃以上２２０℃以下に設定し、金型を基部６及び熱溶着部１１ｃに０．４秒間以上３．０秒間以下接触させることが好ましい。
　従来、容器本体１を構成するフィルムの表面層にはポリエチレンテレフタレートフィルム（ＰＥＴフィルム）が用いられている。ポリエチレンテレフタレートは融点が２００℃以上であるため、熱溶着時に高温で加熱しても、表面のＰＥＴフィルムを溶融させることなく基部と熱溶着が可能であった。
　一方、本実施形態の注出口付き包装袋は、容器本体１はポリエチレンフィルムからなる。ポリエチレンフィルムは融点が１４０℃以下と低いため、ポリエチレンフィルムを溶融させずに注出口部材を熱溶着させることが困難であった。
　このような問題に対し、注出口部材２の基部６を金型に接触させて溶融することにより、ポリエチレンフィルムを溶融させずに注出口部材を熱溶着させることが可能となった。
　本実施形態において、胴部フィルム５１と基部６は共にポリエチレンを形成材料とする。ポリエチレン同士は、加熱による軟化傾向と溶融傾向が近似している。このため、熱溶着のための軟化溶融混合の程度が進みやすく、冷却後にはより強固な溶着状態が形成されやすい。
　このため、胴部フィルム同士の溶着部である１１ａ、１２ａ、１１ｃの良好な熱溶着に加え、容器本体１と注出口部材２との接合部１６においても、強固な熱溶着が実現できる。
　金型は、基部６の側面６ｃに接する面が離型処理されていることが好ましい。離型処理の例としては、テフロン（登録商標）テープの貼付、又はフッ素樹脂系によるコーティングが好ましい。
　金型は、基部６の側面６ｃに接する面が３次元形状を備えることが好ましい。３次元形状としては、例えば微細な凹凸形状が挙げられる。
　このような金型を用いることにより、加熱する工程において、基部６の側面６ｃに３次元形状を転写することができる。
　本発明の包装袋は、注出口部材を備えるため開封が容易であり、かつ、単一素材のフィルム材料から構成されているため、リサイクルが容易である。
１　容器本体、２　注出口部材、５　キャップ、６　基部、６ａ　第１端面、６ｂ　第２端面、６ｃ　側面、７　注出筒部、７ｂ　注出口、７ｃ　先端、８　流路、９　突出部分、１０　包装袋、１０ａ　収容部、１１ａ　側端シール部、１１ｃ　熱溶着部、１２　底部フィルム、１２ａ　底部シール部、１６　接合部、２３　ネジ部、３０　傾斜部、５１　胴部フィルム、１００　金型

Claims (7)

  1. 　内容物を収容する容器本体と、
    　前記容器本体内の前記内容物を注出させるための注出口部材と、を備え、
    　前記注出口部材は、前記容器本体に取り付けられる基部と、
    　前記内容物を注出する流路が形成された注出筒部と、を有し、
    　前記容器本体は、ポリエチレンフィルムからなり、
    　前記注出口部材は、ポリエチレンの成形体である、注出口付き包装袋。
  2. 　前記ポリエチレンフィルムは、延伸ポリエチレン層と、未延伸ポリエチレン層とからなる、請求項１に記載の注出口付き包装袋。
  3. 　スタンディングパウチである、請求項１又は２に記載の注出口付き包装袋。
  4. 　内容物を収容する容器本体と、
    　前記容器本体内の前記内容物を注出させるための注出口部材と、を備える注出口付き包装袋の製造方法であって、
    　前記注出口部材は、前記容器本体に取り付けられる基部と、
    　前記内容物を注出する流路が形成された注出筒部と、を有し、
    　前記容器本体は、ポリエチレンフィルムからなり、
    　前記注出口部材は、ポリエチレンの成形体であり、
    　前記基部の側面に、熱した金型を接触させて前記基部の周方向の表面のみを前記ポリエチレンの融点以上の温度に加熱する工程と、
    　前記容器本体に、加熱後の前記基部を挿入し、金型を用いて熱溶着させる工程と、を有する注出口付き包装袋の製造方法。
  5. 　前記加熱する工程は、前記基部の側面に接する前記金型の表面の温度を１３０℃以上２３０℃以下に設定し、前記金型を前記基部の側面に０．５秒間以上３．０秒間以下接触させる工程である、請求項４に記載の注出口付き包装袋の製造方法。
  6. 　前記金型は、前記基部の側面に接する面が離型処理されている、請求項４又は５に記載の注出口付き包装袋の製造方法。
  7. 　前記金型は、前記基部の側面に接する面が３次元形状を備え、
    　前記加熱する工程は、前記基部の側面に前記３次元形状を転写する工程である、請求項４～６のいずれか１項に記載の注出口付き包装袋の製造方法。
PCT/JP2021/040068 2020-10-30 2021-10-29 注出口付き包装袋及び注出口付き包装袋の製造方法 WO2022092276A1 (ja)

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Publication number Priority date Publication date Assignee Title
WO2024075693A1 (ja) * 2022-10-05 2024-04-11 藤森工業株式会社 包装容器

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JPS5547969U (ja) * 1978-09-25 1980-03-28
JPH072274A (ja) * 1993-04-23 1995-01-06 Hosokawa Yoko:Kk 乳用バッグインボックス用袋体
JP2012167172A (ja) 2011-02-14 2012-09-06 Dainippon Printing Co Ltd 植物由来ポリエチレンを用いたフィルムおよび容器、包装袋
JP2020157517A (ja) * 2019-03-25 2020-10-01 大日本印刷株式会社 スパウト付き包装袋用積層体および包装袋
JP2020182338A (ja) 2019-04-25 2020-11-05 株式会社Ihi 半導体スイッチング素子駆動回路及びマルチレベル電力変換器

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JPS5547969U (ja) * 1978-09-25 1980-03-28
JPH072274A (ja) * 1993-04-23 1995-01-06 Hosokawa Yoko:Kk 乳用バッグインボックス用袋体
JP2012167172A (ja) 2011-02-14 2012-09-06 Dainippon Printing Co Ltd 植物由来ポリエチレンを用いたフィルムおよび容器、包装袋
JP2020157517A (ja) * 2019-03-25 2020-10-01 大日本印刷株式会社 スパウト付き包装袋用積層体および包装袋
JP2020182338A (ja) 2019-04-25 2020-11-05 株式会社Ihi 半導体スイッチング素子駆動回路及びマルチレベル電力変換器

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024075693A1 (ja) * 2022-10-05 2024-04-11 藤森工業株式会社 包装容器

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