JP5731423B2 - 合掌貼り包装袋およびそれの使用方法 - Google Patents

合掌貼り包装袋およびそれの使用方法 Download PDF

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Publication number
JP5731423B2
JP5731423B2 JP2012035029A JP2012035029A JP5731423B2 JP 5731423 B2 JP5731423 B2 JP 5731423B2 JP 2012035029 A JP2012035029 A JP 2012035029A JP 2012035029 A JP2012035029 A JP 2012035029A JP 5731423 B2 JP5731423 B2 JP 5731423B2
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JP
Japan
Prior art keywords
packaging bag
joint
package
passage
filling space
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.)
Active
Application number
JP2012035029A
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English (en)
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JP2013169991A (ja
JP2013169991A5 (ja
Inventor
秀則 木暮
秀則 木暮
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Taisei Lamick Co Ltd
Original Assignee
Taisei Lamick Co Ltd
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 Taisei Lamick Co Ltd filed Critical Taisei Lamick Co Ltd
Priority to JP2012035029A priority Critical patent/JP5731423B2/ja
Priority to US14/376,732 priority patent/US9592945B2/en
Priority to KR1020147019248A priority patent/KR101692596B1/ko
Priority to PCT/JP2013/053912 priority patent/WO2013125499A1/ja
Publication of JP2013169991A publication Critical patent/JP2013169991A/ja
Publication of JP2013169991A5 publication Critical patent/JP2013169991A5/ja
Application granted granted Critical
Publication of JP5731423B2 publication Critical patent/JP5731423B2/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
    • B65D75/5855—Peelable seals
    • 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
    • B65D77/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks or bags
    • B65D77/22—Details
    • B65D77/30—Opening or contents-removing devices added or incorporated during filling or closing of containers
    • B65D77/38—Weakened closure seams
    • 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
    • B65D33/00—Details of, or accessories for, sacks or bags
    • B65D33/16—End- or aperture-closing arrangements or devices
    • B65D33/1683—A pair of interconnecting rigid strips made of plastic material, e.g. one or both being provided with a handle or suspension means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18—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
    • B29C65/76—Making non-permanent or releasable joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/82—Testing the joint
    • B29C65/8207—Testing the joint by mechanical methods
    • B29C65/8246—Pressure tests, e.g. hydrostatic pressure tests
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/13—Single flanged joints; Fin-type joints; Single hem joints; Edge joints; Interpenetrating fingered joints; Other specific particular designs of joint cross-sections not provided for in groups B29C66/11 - B29C66/12
    • B29C66/133—Fin-type joints, the parts to be joined being flexible
    • 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
    • B29C66/345—Progressively making the joint, e.g. starting from the middle
    • B29C66/3452—Making complete joints by combining partial 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
    • B29C66/70—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
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8145—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the constructional aspects of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/81463—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the constructional aspects of the pressing elements, e.g. of the welding jaws or clamps comprising a plurality of single pressing elements, e.g. a plurality of sonotrodes, or comprising a plurality of single counter-pressing elements, e.g. a plurality of anvils, said plurality of said single elements being suitable for making a single joint
    • B29C66/81465—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the constructional aspects of the pressing elements, e.g. of the welding jaws or clamps comprising a plurality of single pressing elements, e.g. a plurality of sonotrodes, or comprising a plurality of single counter-pressing elements, e.g. a plurality of anvils, said plurality of said single elements being suitable for making a single joint one placed behind the other in a single row in the feed direction
    • 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
    • B29C66/83—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
    • B29C66/8351—Jaws mounted on rollers, cylinders, drums, bands, belts or chains; Flying jaws
    • B29C66/83541—Jaws mounted on rollers, cylinders, drums, bands, belts or chains; Flying jaws flying jaws, e.g. jaws mounted on crank mechanisms or following a hand over hand movement
    • B29C66/83543—Jaws mounted on rollers, cylinders, drums, bands, belts or chains; Flying jaws flying jaws, e.g. jaws mounted on crank mechanisms or following a hand over hand movement cooperating flying jaws
    • 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
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    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B3/00—Packaging plastic material, semiliquids, liquids or mixed solids and liquids, in individual containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, or jars
    • B65B3/04—Methods of, or means for, filling the material into the containers or receptacles
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B65B51/00—Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
    • B65B51/02—Applying adhesives or sealing liquids
    • B65B51/023—Applying adhesives or sealing liquids using applicator nozzles
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B65B51/00—Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
    • B65B51/10—Applying or generating heat or pressure or combinations thereof
    • B65B51/14—Applying or generating heat or pressure or combinations thereof by reciprocating or oscillating members
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B51/00—Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
    • B65B51/10—Applying or generating heat or pressure or combinations thereof
    • B65B51/26—Devices specially adapted for producing transverse or longitudinal seams in webs or tubes
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    • B65B61/00—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages
    • B65B61/18—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for making package-opening or unpacking elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • 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
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    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
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    • 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
    • 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
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B2220/00—Specific aspects of the packaging operation
    • B65B2220/08—Creating fin seals as the longitudinal seal on horizontal or vertical form fill seal [FFS] machines

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Description

この発明は、合掌貼り包装袋およびそれの使用方法に関するものであり、フレキシブルな包装袋に、液体、粘稠物等の、単一種類の、たとえば比較的少量の液状被包装物を充填包装してなる包装体から、包装袋に引裂き、切断等を施すことなしに、したがって、引裂き片、切断片等の発生なしに、液状被包装物を目的とする位置に簡易に注出させることができる技術を提案するものである。
スープ、調味料、油、お酒、ドレッシング等の液状物、練りからし、練りわさび等の粘稠物その他の液状被包装物をフレキシブルな包装袋に充填包装してなる包装体から、該液状被包装物を注出するに当たっては、特許文献１に開示されているように、被包装物の充填スペースを区画するヒートシールその他による接合部分の外縁に形成された、−ノッチ、Ｖノッチ、その他の引裂き誘導疵の位置から、手指の挟持によって包装袋のその接合部分を、少なくとも被包装物の充填スペースに達するまで引裂くこと、または包装袋の隅部をハサミ等によって切除することが従来から広く一般に行われている。
特開平７−１３２９４４号公報
しかるに、包装袋の接合部分を手指でつまんで引裂くときは、多くの場合、包装袋の破袋強度との関連の下で、相当大きな力を必要とすることから、挟持力等の弱い子供や老人等には、その引裂きが甚だ困難であり、また挟持力を高めるべく、被包装物の充填スペースまで挟持した場合には、液状被包装物が意図しない個所に注出されるおそれが高いという問題があり、また、包装袋の隔部を切除するときは、ハサミ等の道具の使用が不可避になるという不便があり、しかも、発生した破断片等が食品等に混入しないように始末することが余儀なくされるという問題があった。
この発明は、従来技術が抱えるこのような問題点を解決することを課題とするものであり、それの目的とするところは、被包装物の充填スペース内に充填包装された単一種類の液状被包装物の、包装袋からの注出を老若男女を問わず簡易に行うことができ、しかも、ハサミ等の道具の使用を不要とし、また切断片等の始末を不要にできる、多くは方形の、フレキシブルな合掌貼り包装袋およびそれの使用方法を提供するにある。
この発明の合掌貼り包装袋は、包装用積層フィルムのシーラント層どうしを、前記積層フィルムの両側部分において合掌状に接合するとともに、底部もしくは頂部を接合させて、単一の被包装物充填スペースを区画し、平坦な姿勢で保管および運搬可能としてなるフレキシブルな合掌貼り包装袋であって、前記合掌状の接合部が、前記包装袋の両側部間の中間に位置する背貼り接合部であるとともに、前記包装袋の両側部が前記積層フィルムの折り返し部からなり、前記合掌状の接合部の、延在方向の中間部に、被包装物の注出通路を設けるとともに、該注出通路の少なくとも一部に、前記合掌状の接合部に比して加熱温度および加圧力の少なくとも一方を相対的に小さくしてヒートシールし、接合強度が相対的に低く、前記被包装物充填スペースに液状被包装物を充填包装した状態で、平坦な姿勢で保管および運搬した際には、該被包装物充填スペースを押圧しても剥離しないが、前記合掌状の接合部を境として二つに山折りとし、該被包装物充填スペースを厚み方向に押圧した際には、剥離することができるように設定した易剥離部分を設けてなるものである。
このような包装袋において、前記注出通路の幅、すなわち合掌状の接合部の延在方向の幅を、被包装物充填スペースから離隔するにつれて次第に狭小にすることが好ましく、この一方で、注出通路の幅を、被包装物充填スペースから通路出口に到るまでの間で、すなわち注出通路の延在方向の全長にわたって一定とすることもできる。
前記易剥離部分は、注出通路の出口に隣接させて設けること、または注出通路の延在方向の全体にわたって設けることが好ましい。
また好ましくは、易剥離部分を、注出通路の延在方向の所要の複数個所に設ける。
そして、この発明の、包装袋の使用方法は、先に述べた合掌状の接合部が背貼り接合部からなるいずれかの合掌貼り包装袋の、被包装物充填スペースに単一種類の液状被包装物を充填包装してなる包装体を、背貼り接合部を境として二つに山折りした状態で、被包装物充填スペースを厚み方向に押圧することで、前記易剥離部分を剥離させて液状被包装物を注出通路を経て注出するにある。
この発明の合掌貼り包装袋では、単一の被包装物充填スペース内に、一種類の液状被包装物を充填包装した包装体とし、被包装物充填スペースを厚み方向に押圧して、注出通路に設けた易剥離部分を剥離させることで、比較的小さな押圧力の作用の下で、液状被包装物を注出通路を経て所定の位置へ簡易に注出させることができる。
従って、この包装袋では、液状被包装物の注出に際して、包装袋を手指で挟持して引裂いたり、またハサミ等によって包装袋の隅部を切除したりすることが不要となり、老若男女を問わず、また切除片の発生なしに、被包装物を所期した通りの位置へ極めて容易に、かつ正確に注出することができる。
とくに、注出通路を設ける合掌状の接合部を、背貼り接合部とした場合には、該液状被包装物の注出に当たって、包装袋の背貼り接合部を境として二つに山折りし、包装体の厚みをほぼ２倍とした状態で、被包装物充填スペースを厚み方向に押圧して、注出通路に設けた易剥離部分を剥離させることで、比較的小さな押圧力の作用の下で、液状被包装物を注出通路を経て所定の位置へ簡易に注出させることができる。
ここで、注出通路の幅を、被包装物充填スペースから離隔するにつれて狭小にしたときは、液状被包装物の粘度が小さい場合にあっても、注出通路の出口を所要の方向に向けることで、該被包装物を所期したとおりの位置に正確に注出させることができる。
この一方で、注出通路の幅を、注出通路の延在方向の全長にわたって一定としたときは、とくに高粘度の液状被包装物の注出に当たり、山折り包装体に対する、被包装物充填スペースへの押圧力を小さくしても、易剥離部分を容易に剥離させて、該被包装物を所期した通りに注出させることができる。
また、易剥離部分を、注出通路の出口に隣接させて設けた場合は、被包装物充填スペースの容積を最大にすることができる。なおここで、易剥離部分を、注出通路の幅の狭小出口に隣接させて設けたときは、易剥離部分での破袋強度を高めて、液状被包装物の意図しない漏出のおそれをより十分に取り除くことができる。
そしてまた、易剥離部分を注出通路の延在方向の全体にわたって設けた場合は、注出通路の形態のいかんにかかわらず、易剥離部分での意図しない破袋を一層有効に防止することができる。
ところで、易剥離部分を、注出通路の延在方向の複数箇所に設けたときは、一以上のいずれかの易剥離部分での意図しない破袋が生じても、液状被包装物の漏出を、他の易剥離部分の作用下で効果的に防止することができる。
そしてさらに、この発明の、包装袋の使用方法では、包装袋それ自体について前述したように、注出通路を設ける合掌状の接合部が、背貼り接合部からなり、包装体を該背貼り接合部を境として山折りして、包装体の厚みをほぼ２倍とした状態で、被包装物充填スペースを押圧することにより、液状被包装物の注出に際して、包装袋の接合部分を手指で挟持して包装袋を引裂いたり、ハサミ等の道具によって包装袋の隅部を切除したりすることが不要となるので、挟持力等の小さい者であっても、切除片の発生なしに、液状被包装物を所期した通りの位置へ極めて簡易に、かつ正確に注出することができる。
この発明の合掌貼り包装袋の一実施形態を示す斜視図である。 図１に示す包装袋の単一の被包装物充填スペース内へ一種類の液状被包装物を充填包装してなる包装体を示す図である。 図１に示す包装袋の、合掌状の接合部および易剥離部分の形成例を示す斜視図である。 易剥離部分をも含めた合掌状の接合部の破袋強度の試験態様を例示する図である。 包装袋への、注出通路および易剥離部分の形成態様の変更例を、合掌貼り接合部分で山折りにして示す図である。 先細り注出通路への易剥離部分の形成態様の変更例を示す図５と同様の図である。
以下にこの発明の実施形態を図面に示すところに基づいて説明する。
図１に示す包装袋の実施形態において、フレキシブルな合掌貼り包装袋１は、二層以上の積層構造になる包装用積層フィルム２のシーラント層どうしを、両側部分においてヒートシール、インパルスシール、高周波ウエルダーシール、超音波シール、その他によって図に斜線を施して示すように合掌状に接合するとともに、液状被包装物の充填口部を除く、底部もしくは頂部、図では底部を、図に斜線を施して示すように接合して、単一の被包装物充填スペース３を区画することにより構成してなり、この合掌貼り包装袋１は、合掌状の接合部４を上面側、下面側等に位置させた平面視で、輪郭形状を方形とすることができる。
ここでは、このような合掌貼り包装袋１の、合掌状の背貼り接合部４の延在方向の中間部に、図２（ａ）、（ｂ）に斜視図で示すところから明らかなように、被包装物の一の注出通路５を設ける。
なお、図示の注出通路５は、被包装物充填スペース３から離隔するにつれて、背貼り接合部４の延在方向となる幅を次第に狭小にしているが、注出通路５の幅は、該充填スペース３から離隔するにつれて次第に広幅とすること、注出通路５の延在方向の全体にわたって一定幅とすることもできる。
ところで、注出通路５の出口６の開口幅は、注出通路５の形成態様のいかんにかかわらず、液状被包装物の粘度の小さいものほど小さくすることが、被包装物の注出方向の精度を高める上で好ましい。
ここで、図２（ａ）は、包装体を背貼り接合部側からみた斜視図を、図２（ｂ）は、包装体を背貼り接合部４を境として二つに山折りした状態の斜視図をそれぞれ示し、そして図２（ｃ）は、図２（ｂ）の平面図を示す。
このような注出通路５の少なくとも一部、図２では被包装物充填スペース３側の端部に、背貼り接合部４に比して接合強度が相対的に低い、図にドットを施して示すような、通路５を横切る一条の易剥離部分７を設ける。
このような、フレキシブルな合掌貼り包装袋１は、たとえば上端開口から、被包装物充填スペース３内へ所定量の液状被包装物を充填するとともに、包装袋１の頂部を好ましくは抜気下で、図２に示すように接合させることで、被包装物を充填包装した包装体８とされる。
従って、この包装袋１は、液状被包装物の包装体８からの注出に当たり、被包装物充填スペース３を、図２（ｃ）に矢印で示す方向に押圧することで、易剥離部分７の剥離作用の下で、先に述べた通りの作用効果をもたらすことができる。とくに、図２のように包装袋１が背貼りシール袋からなる場合には、背貼り接合部４を境として二つに山折りし、包装体８の厚みをほぼ２倍とした状態とすることができるため、注出通路５に設けた易剥離部分７を小さな押圧力の下で容易に剥離させ、液状被包装物を注出させることができる。
なおここで、図１に示したような合掌貼り包装袋１の合掌状の背貼り接合部４は、たとえば図３に示すように、筒状に形成した包装用積層フィルム２の両側部分で、被包装物充填スペース３とされる部分の際のシーラント層を、加熱温度および加圧力の少なくとも一方を相対的に小さくした一対のヒートシールローラ１１によって合掌状にヒートシールして、易剥離部分７を包装用積層フィルム２の全長にわたって予め形成するとともに、易剥離部分７をも含むシーラント層の遊端側部分を、所要の形態の注出通路５部分を残して、一対のボックスモーションヒートシール刃１２等をもって十分強固に合掌状に背貼り接合させて、所要の幅の背貼り接合部４とすることによって形成することができる。
そして、このようにして形成される背貼り接合部４の破袋強度は、たとえば、合掌貼り包装袋１内へ、一種類の液状被包装物を充填包装してなる、図２に示すような包装体８を、図４に斜視図で示すような平坦な姿勢で平坦な下面板１３上に載置するとともに、該包装体８を平坦な上面板１４により背貼り接合部４に破袋が生じるまで押圧することによって測定することができる。
ちなみに、１５μｍの二軸延伸ナイロンフィルムに、５０μｍの厚みの、シーラント層としての直鎖状低密度ポリエチレンを積層してなる包装用積層フィルムを幅５５ｍｍ、長さ１００ｍｍの包装袋とし、被包装物充填スペースに４ｍｌの水を充填包装した包装体の背貼り接合部の幅を１０ｍｍとした場合、背貼り接合部に注出通路も易剥離部分も設けない従来の包装体の破袋強度は６３３７Ｎであったのに対し、図２に示すように注出通路５の、被包装物充填スペース３側の端部に、２ｍｍ幅の易剥離部分７を設けるとともに、注出通路５の幅を、被包装物充填スペース３側での５ｍｍから、注出通路出口６での２ｍｍまで漸減させた、この発明に係る包装体８の破袋強度は５０７７Ｎであった。
これによれば、この発明に係る包装体８の破袋強度の低下率は約２０％であって、この発明の合掌貼り包装袋１からなる包装体８は、平坦な姿勢で所要の破袋強度を十分に発揮することができ、包装体８の保管、運搬等に際する、包装袋の意図しない破袋を有効に防止し得ることが解かる。
包装袋の変更例を示す図５において、図５（ａ）に示すものは、注出通路５の幅を、被包装物充填スペース３から離隔するにつれて次第に狭小にするとともに、易剥離部分７を注出通路５の全長にわたって形成したものである。また、図５（ｂ）、（ｃ）、（ｄ）に示すものは、注出通路５の幅を、該通路５の延在方向の全長にわたって一定とし、そして、図５（ｂ）、（ｃ）に示すところでは、注出通路５の全体を易剥離部分７とし、また図５（ｄ）に示すところでは、注出通路５の延在長さの、前記充填スペース３側の半部分を易剥離部分７としたものである。
ここで、図５（ｃ）に示すものは、注出通路５の延在長さを、図５（ｂ）に示すものの約１／２としている。
図５に示すこのような変更例によっても、包装体からの液状被包装物の注出に際する、被包装物充填スペース３の押圧による、易剥離部分７の剥離に基づいて、先に述べたと同様の、所期した通りの効果を実現することができる。
易剥離部分７の変更例を示す図６は、被包装物充填スペース３から離隔するにつれて幅が次第に狭小になる注出通路５を設けたものであり、図６（ａ）に示すものは、かかる注出通路５の出口６に隣接させて易剥離部分７を形成したものである。これによれば、被包装物充填スペース３の容積を大きくすることができる。
また、図６（ｂ）、（ｃ）に示すものは、注出通路５の延在方向の所要の複数箇所、図では二個所に、相互に間隔をおいて位置して、注出通路５を遮断する二条の易剥離部分７を設けたものであり、それらの易剥離部分７の配設位置を、図６（ｂ）に示すところでは、被包装物充填スペース３側の通路端部および注出通路５の延在方向の中間部とし、図６（ｃ）に示すところでは、注出通路５の、被包装物充填スペース３側の端部および出口側の端部のそれぞれとしている。
これによれば、いずれか一方の易剥離部分７に不測の剥離が生じることがあっても、他方の易剥離部分７によって液状被包装物の漏出を有効に阻止することができる。
そして、図６に示すこれらの変更例によってもまた、易剥離部分７の作為的な剥離に基づき、合掌貼り包装袋１について前述したと同様の効果をもたらすことができ、このことは、包装袋１に液状被包装物を充填包装してなる包装体８についても同様である。
１ 合掌貼り包装袋
２ 包装用積層フィルム
３ 被包装物充填スペース
４ 合掌状の接合部 （背貼り接合部）
５ 注出通路
６ 出口
７ 易剥離部分
８ 包装体
１１ ヒートシールローラ
１２ ボックスモーションヒートシール刃
１３ 下面板
１４ 上面板

Claims (7)

  1. 包装用積層フィルムのシーラント層どうしを、前記積層フィルムの両側部分において合掌状に接合するとともに、底部もしくは頂部を接合させて、単一の被包装物充填スペースを区画し、平坦な姿勢で保管および運搬可能としてなるフレキシブルな合掌貼り包装袋であって、
    前記合掌状の接合部が、前記包装袋の両側部間の中間に位置する背貼り接合部であるとともに、前記包装袋の両側部が前記積層フィルムの折り返し部からなり、
    前記合掌状の接合部の、延在方向の中間部に、被包装物の注出通路を設けるとともに、該注出通路の少なくとも一部に、前記合掌状の接合部に比して加熱温度および加圧力の少なくとも一方を相対的に小さくしてヒートシールし、接合強度が相対的に低く、前記被包装物充填スペースに液状被包装物を充填包装した状態で、平坦な姿勢で保管および運搬した際には、該被包装物充填スペースを押圧しても剥離しないが、前記合掌状の接合部を境として二つに山折りとし、該被包装物充填スペースを厚み方向に押圧した際には、剥離することができるように設定した易剥離部分を設けてなる合掌貼り包装袋。
  2. 前記注出通路の幅を、被包装物充填スペースから離隔するにつれて次第に狭小にしてなる請求項１に記載の合掌貼り包装袋。
  3. 前記注出通路の幅を、該注出通路の延在方向の全体にわたって一定としてなる請求項１に記載の合掌貼り包装袋。
  4. 前記易剥離部分を、注出通路の出口に隣接させて設けてなる請求項１〜３のいずれかに記載の合掌貼り包装袋。
  5. 前記易剥離部分を、注出通路の全体にわたって設けてなる請求項１〜３のいずれかに記載の合掌貼り包装袋。
  6. 前記易剥離部分を、注出通路の延在方向の所要の複数箇所に設けてなる請求項１〜３のいずれかに記載の合掌貼り包装袋。
  7. 請求項１〜６のいずれかに記載の合掌貼り包装袋の被包装物充填スペースに単一種類の液状被包装物を充填包装してなる包装体を、背貼り接合部を境として二つに山折りした状態で、被包装物充填スペースを厚み方向に押圧することで、前記易剥離部分を剥離させて液状被包装物を注出通路を経て注出する包装袋の使用方法。
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