JP2009107715A - Manufacturing apparatus for tubular film-formed body, automatic filling/packaging machine and packaging method for tubular package - Google Patents

Manufacturing apparatus for tubular film-formed body, automatic filling/packaging machine and packaging method for tubular package Download PDF

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JP2009107715A
JP2009107715A JP2007284543A JP2007284543A JP2009107715A JP 2009107715 A JP2009107715 A JP 2009107715A JP 2007284543 A JP2007284543 A JP 2007284543A JP 2007284543 A JP2007284543 A JP 2007284543A JP 2009107715 A JP2009107715 A JP 2009107715A
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hot air
cylindrical
film
overlapping portion
sealing
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JP5235069B2 (en
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Hitoshi Kobayashi
仁 小林
Masakuni Shiba
正邦 芝
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Asahi Kasei Chemicals Corp
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Asahi Kasei Chemicals Corp
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/40General 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
    • B29C66/41Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43Joining a relatively small portion of the surface of said articles
    • B29C66/432Joining 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
    • B29C66/4322Joining 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/10Joining 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/01General aspects dealing with the joint area or with the area to be joined
    • B29C66/05Particular design of joint configurations
    • B29C66/10Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11Joint 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
    • B29C66/112Single lapped joints
    • B29C66/1122Single lap to lap joints, i.e. overlap joints
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/01General aspects dealing with the joint area or with the area to be joined
    • B29C66/348Avoiding melting or weakening of the zone directly next to the joint area, e.g. by cooling
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/40General 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
    • B29C66/49Internally supporting the, e.g. tubular, article during joining
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/70General 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
    • B29C66/73General 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
    • B29C66/739General 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
    • B29C66/7392General 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
    • B29C66/73921General 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/80General aspects of machine operations or constructions and parts thereof
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/80General aspects of machine operations or constructions and parts thereof
    • B29C66/84Specific machine types or machines suitable for specific applications
    • B29C66/849Packaging machines
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/70General 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
    • B29C66/71General 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/70General 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
    • B29C66/72General 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
    • B29C66/723General 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

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)
  • Package Closures (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a tubular package in which the generation of a wrinkle at an overlapping part (sealing part), heat deformation or heat shrink or a pinhole around a sealing part is restrained and which has favorable appearance, is beautiful in appearance, has improved dimensional accuracy, and is excellent in sealing strength and film strength. <P>SOLUTION: A hot blast shield plate with a slit is provided between the overlapping part(sealing part) of the tubular object and a hot blast sealing means and the slit of the hot blast shield plate is arranged on the straight line connecting a nozzle opening of the hot blast sealing means and the overlapping part of the tubular object. It is preferable that the nozzle opening of the hot blast sealing means is arranged on a position so that the hot blast can be blown from the almost vertical direction to the tangent of the overlapping part, and the hot blast shield plate is arranged almost parallel to the tangent or with an inclination of ±20° or smaller. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、筒状フィルム成形体の製造装置、ならびに液状あるいは練り状食品などの筒状包装体の自動充填包装機および包装方法に関する。   The present invention relates to an apparatus for producing a tubular film molded body, and an automatic filling and packaging machine and packaging method for a tubular packaging body such as liquid or kneaded food.

従来、蒟蒻や漬物、ハム・ソーセージといった液状あるいは練り状食品など、流動性を有する物品(被包装物)の包装方法として、長尺の合成樹脂フィルムの両側縁同士を重ね合わせて融着した筒状フィルム成形体内に、上記物品あるいはその原料を充填し、該筒状フィルム成形体の両端部を封止する方法が広く用いられている。   Conventionally, as a packaging method for fluid items (packaged items) such as liquid or kneaded foods such as rice cakes, pickles, hams and sausages, a long synthetic resin film is laminated and fused on both sides. A method of filling the above-mentioned article or its raw material into a cylindrical film molded body and sealing both ends of the cylindrical film molded body is widely used.

この種の筒状包装体の包装作業は、通常、筒状フィルム成形体の成形から封止まで連続工程で行われている。具体的には、帯状の合成樹脂フィルムを繰り出しながら両側縁同士を重ね合わせて融着させることにより筒状フィルム成形体を成形し、この筒状フィルム成形体中に被包装物を充填した後、所定の間隔で外部より該筒状フィルム成形体を外部から押圧して内部の被包装物を押しのけ、その押しのけた部分を金属ワイヤーや熱シールにより封止し、筒状包装体毎にフィルムを切断する。   The packaging operation of this type of cylindrical package is usually performed in a continuous process from molding to sealing of the cylindrical film molded body. Specifically, a cylindrical film molded body is formed by overlapping and fusing both side edges while feeding out a belt-shaped synthetic resin film, and after filling a packaged article in this cylindrical film molded body, The cylindrical film molded body is pressed from the outside at a predetermined interval to push out the inner package, and the pushed portion is sealed with a metal wire or heat seal, and the film is cut for each cylindrical package. To do.

上記の筒状フィルム成形体を成形するために用いられるシール(融着)方法としては、高周波シールや熱板シールなどが広く利用されているが、近年、環境面への配慮および生産性の向上の観点から、塩素を含有しない合成樹脂フィルムを非接触でシール可能な、熱風シール方式を採用する種々の試みが為されている。   High-frequency seals and hot plate seals are widely used as the sealing (fusion) method used to form the above-mentioned cylindrical film molded body, but in recent years, environmental considerations and productivity have been improved. In view of the above, various attempts have been made to adopt a hot air sealing method that can seal a synthetic resin film not containing chlorine in a non-contact manner.

例えば、特許文献1には、熱可塑性樹脂帯状フィルムをフォルダで筒状となし、その両側縁の重ね合わされた部分にノズルから熱風を吹き付けて筒状フィルム成形体に成形する、熱風シール方法とその自動充填包装機が開示されている。   For example, Patent Document 1 discloses a hot air sealing method in which a thermoplastic resin belt-shaped film is formed into a cylindrical shape by a folder, and hot air is blown from a nozzle to the overlapped portions of both side edges and formed into a cylindrical film molded body and its An automatic filling and packaging machine is disclosed.

また、特許文献2には、収縮性MXDナイロンフィルムの両側にポリプロピレン系樹脂やポリプロピレン系フィルムを押出しラミネート法やドライラミネート法で貼り合わせて得た帯状の積層フィルムを、熱風シール式充填機にてタテ方向を封筒貼り融着して両端を金属ワイヤーで結紮したロケット包装体が開示されている。   Further, in Patent Document 2, a belt-like laminated film obtained by extruding a polypropylene resin or a polypropylene film on both sides of a shrinkable MXD nylon film and bonding them together by a laminating method or a dry laminating method is obtained with a hot air sealing type filling machine. There has been disclosed a rocket packaging body in which the lengthwise direction is pasted and fused and the both ends are ligated with metal wires.

さらに、特許文献3には、熱収縮性ナイロンフィルムの両側にシーラントフィルムとしてポリエチレンフィルムを貼り合わせた帯状の積層フィルムを、誘導ロールを経由して自動充填機に導き、セーラー等を介してその両端を重ね合わせ(封筒貼りの場合)、この部分にホットエアーをノズルから吹き付けて、シーラントフィルムを溶融して、互いに融着させ、円筒体(チューブ)を形成し、この円筒体内に肉を充填した後、円筒体の下部および上部をクリップで結紮し、加熱殺菌したハム・ソーセージが開示されている。   Furthermore, in Patent Document 3, a belt-like laminated film in which a polyethylene film is bonded as a sealant film on both sides of a heat-shrinkable nylon film is guided to an automatic filling machine via a guide roll, and both ends thereof are connected via a sailor or the like. (In the case of envelope attachment), hot air is blown onto this part from the nozzle, the sealant film is melted and fused together to form a cylinder (tube), and this cylinder is filled with meat Later, a ham and sausage in which a lower part and an upper part of a cylindrical body are ligated with a clip and sterilized by heating is disclosed.

また、特許文献4には、ポリオレフィン系樹脂からなる外側層(1)とポリアミド系樹脂からなる中間層(2)と中間層(2)を介して外側層(1)と対向して配置されたポリオレフィン系樹脂からなるもう一方の外側層(3)の少なくとも3層からなる積層フィルムを用い、ホットジェットシール(封筒貼り型シール)し、80℃でボイルクッキング処理した畜肉ソーセージとその自動充填包装機械が開示されている。   Further, in Patent Document 4, the outer layer (1) made of polyolefin resin, the intermediate layer (2) made of polyamide resin, and the intermediate layer (2) are arranged to face the outer layer (1). Livestock sausage that has been hot-jet sealed (envelope sticker) and boil-cooked at 80 ° C using a laminated film consisting of at least three layers of the other outer layer (3) made of polyolefin resin, and its automatic filling and packaging machine Is disclosed.

さらに、特許文献5には、同種のポリオレフィン系樹脂からなる両外層およびポリアミド系樹脂からなる中間層の少なくとも3層からなる延伸多層フラット状フィルムを用い、ホーミング部で筒状にし、フィルムの外表面と内表面とをホットジェット方式(加熱空気をフィルムに吹き付ける方式)によりフィルムの送り速度を10m/分(50ショット/分)でバックシーム(封筒貼りシール)してケーシングを形成し、このケーシング内にペースト状のソーセージを充填後、砲弾型の包装体の両端をクリップにて閉じた後に加熱殺菌したソーセージとその自動充填包装機が開示されている。   Furthermore, Patent Document 5 uses a stretched multilayer flat film composed of at least three layers of both outer layers made of the same type of polyolefin resin and an intermediate layer made of polyamide resin, and is formed into a cylindrical shape at the homing portion, and the outer surface of the film The inner surface and the inner surface are back seam (envelope-sealed) at a film feed rate of 10 m / min (50 shots / min) by a hot jet method (method of blowing heated air onto the film) to form a casing. A sausage that has been pasteurized and then closed at both ends of a shell-shaped package with clips and then heat-sterilized and an automatic filling and packaging machine are disclosed.

実公昭55−14171号公報Japanese Utility Model Publication No. 55-14171 特開2001−30445号公報JP 2001-30445 A 特開平5−316933号公報JP-A-5-316933 特開2001−9993公報JP 2001-9993 A 特開2000−37828公報JP 2000-37828 A

しかしながら、上記従来の熱風シール方式の自動充填包装機においては、筒状体の重ね合わせ部(シール部)周辺の広い範囲にわたって熱風が印加されるので、フィルム搬送時の脈動やシール部のばたつきなどと相まって、重ね合わせ部周辺のフィルムに熱変形や熱収縮を生じさせ易く、特に、高収縮性の合成樹脂フィルムを適用した場合に、シール幅に過大なばらつきを生じさせるのみならず、シール部周辺にピンホールを発生させるなどの過度の外観不良を引き起こすことが判明した。また、シール部周辺の熱変形や熱収縮は、熱風シール時の不均一な熱融着プロセスの進行を招き、シール部に過度の皺を発生させるなどの外観不良をも引き起こす。   However, in the conventional hot air sealing type automatic filling and packaging machine, since hot air is applied over a wide range around the overlapping portion (sealing portion) of the cylindrical body, pulsation during film transportation, flapping of the sealing portion, etc. In combination with the above, it is easy to cause thermal deformation and heat shrinkage in the film around the overlapped part. Especially, when a highly shrinkable synthetic resin film is applied, not only excessive variation in the seal width is caused, but also the seal part. It was found that it causes excessive appearance defects such as generating pinholes in the vicinity. In addition, thermal deformation and thermal contraction around the seal portion cause a non-uniform heat-sealing process during hot air sealing and cause appearance defects such as excessive wrinkling in the seal portion.

一方、熱風シール時に不均一な熱融着プロセスが進行してシール部に非熱融着部分が多量に残存すると、シール強度の低下およびシール易剥離の問題が生じる。また、上述したシール部周辺のピンホールは、フィルム強度の低下を引き起こす。これらの機械強度の低下は、例えば、得られる筒状包装体をレトルト殺菌などの高温あるいは高圧プロセスを施した場合に、レトルト殺菌時のパンクや雑菌の混入などの問題をも引き起こし得るので、歩留まりを低下させ、生産性および経済性を低下させる要因となる。   On the other hand, when a non-uniform heat fusion process proceeds during hot air sealing and a large amount of non-heat fusion portions remain in the seal portion, problems such as a decrease in seal strength and easy peeling of the seal occur. Moreover, the pinhole around the seal portion described above causes a decrease in film strength. These reductions in mechanical strength can cause problems such as puncture and miscellaneous contamination during retort sterilization, for example, when the obtained cylindrical package is subjected to a high temperature or high pressure process such as retort sterilization. This is a factor that decreases productivity and economy.

そのため、上記従来の自動充填包装機およびこれに採用されている熱風シール方式は、各種の素材選定や製造条件の幅(プロセス裕度)が乏しく、汎用性、生産性および経済性に劣るものであり、早急な改善が求められていた。   For this reason, the conventional automatic filling and packaging machine and the hot-air sealing method employed in the conventional automatic filling and packaging machine are inferior in versatility, productivity, and economic efficiency because of a wide range of material selection and manufacturing conditions (process margin). There was a need for immediate improvement.

本発明は、かかる事情を鑑みてなされたものであり、筒状体の重ね合わせ部(シール部)の皺やシール部周辺の熱変形や熱収縮、ピンホールの発生が抑制され、見栄えが良く美観に優れ、寸法精度の向上が図られ、シール強度およびフィルム強度に優れる筒状フィルム成形体を製造可能な、汎用性、生産性および経済性に優れる製造装置、ならびにこれを用いた筒状包装体の自動充填包装機および包装方法を提供することを目的とする。   The present invention has been made in view of such circumstances, and it is possible to suppress the wrinkles of the overlapping portion (seal portion) of the cylindrical body, the thermal deformation and thermal contraction around the seal portion, and the generation of pinholes, and the appearance is good. A manufacturing device with excellent versatility, productivity and economy, and a cylindrical packaging using the same, capable of manufacturing a cylindrical film molded body with excellent aesthetics, improved dimensional accuracy, and excellent sealing strength and film strength An object is to provide an automatic body filling and packaging machine and packaging method.

本発明者らは、上記課題に対し鋭意検討した結果、熱風シール時の筒状体の重ね合わせ部(シール部)への熱風の吹き付けを規制することにより、シール部の皺やシール部周辺の熱変形や熱収縮、ピンホールの発生が抑制され、上記従来の種々の課題が解消されることを見出し、本発明を完成するに至った。
すなわち、本発明は、以下<1>〜<5>を提供する。
As a result of intensive studies on the above problems, the inventors of the present invention regulate the blowing of hot air to the overlapping portion (seal portion) of the tubular body during hot air sealing, thereby preventing the seal portion ridges and the seal portion periphery. It has been found that the occurrence of thermal deformation, thermal shrinkage, and pinholes is suppressed, and the above-described conventional problems are solved, and the present invention has been completed.
That is, the present invention provides the following <1> to <5>.

<1>帯状の合成樹脂フィルムを筒状に湾曲させて該合成樹脂フィルムのフィルム両側縁が重ね合わせられた筒状体を形成する製筒手段と、前記筒状体の重ね合わせ部にノズル開口から熱風を吹き付け、該重ね合わせ部を熱融着させて筒状フィルム成形体を成形する熱風シール手段とを備え、前記熱風シール手段と前記筒状体の重ね合わせ部との間に、スリットを有する熱風遮蔽板が設けられ、前記ノズル開口および前記筒状体の重ね合わせ部を結ぶ直線上に、前記スリットが配置されていることを特徴とする、筒状フィルム成形体の製造装置。
このように構成すると、ノズル開口から噴射される熱風は、熱風遮蔽板のスリットにより集束され、筒状体の重ね合わせ部(シール部)に局所的に吹き付けられる。換言すれば、シール部周辺への熱風の吹き付けは、熱風遮蔽板によって遮蔽される。また、シール部に吹き付けられた熱風は、熱風遮蔽板の表面に沿って外方へと効率的に排出され易くなる。その結果、シール部周辺への過度の熱印加が緩和され、シール部周辺の熱変形や熱収縮、ピンホールの発生が抑制されるとともにシール部における均一な熱融着が促進され、寸法精度、シール強度およびフィルム強度が高まる。
<1> Cylinder forming means for forming a cylindrical body in which a belt-shaped synthetic resin film is curved into a cylindrical shape and the both side edges of the synthetic resin film are overlapped; and a nozzle opening in an overlapping portion of the cylindrical body And hot air sealing means for forming a cylindrical film molded body by blowing hot air from the hot air and heat-sealing the overlapping portion, and a slit is provided between the hot air sealing means and the overlapping portion of the cylindrical body. An apparatus for producing a cylindrical film molded body, comprising: a hot air shielding plate having a slit, and wherein the slit is arranged on a straight line connecting the nozzle opening and the overlapping portion of the cylindrical body.
If comprised in this way, the hot air injected from a nozzle opening will be converged by the slit of a hot air shielding board, and will be locally sprayed on the overlapping part (seal part) of a cylindrical body. In other words, the blowing of hot air around the seal portion is shielded by the hot air shielding plate. Moreover, the hot air blown to the seal portion is easily discharged efficiently along the surface of the hot air shielding plate. As a result, excessive heat application to the periphery of the seal part is mitigated, thermal deformation and heat shrinkage around the seal part, and generation of pinholes are suppressed, and uniform heat fusion at the seal part is promoted, dimensional accuracy, Seal strength and film strength are increased.

<2>前記熱風シール手段は、前記筒状体の断面における重ね合わせ部の接線に対して略垂直方向から熱風を吹き付け可能な位置に配置され、前記熱風遮蔽板が、前記接線に対して略平行にまたは±20°以下の傾きをもって配置されていることを特徴とする<1>に記載の筒状フィルム成形体の製造装置。
このように構成すると、スリットを通過して筒状体の重ね合わせ部へ吹き付けられた熱風が、熱風遮蔽板の傾いた面に沿って外方へより一層効率的に排出され易くなり、筒状体の重ね合わせ部への過度の熱印加がより一層効果的に緩和される。
<2> The hot air sealing means is disposed at a position where hot air can be blown from a direction substantially perpendicular to the tangent line of the overlapping portion in the cross section of the cylindrical body, and the hot air shielding plate is substantially positioned with respect to the tangent line. The apparatus for producing a cylindrical film molded article according to <1>, wherein the apparatus is arranged in parallel or with an inclination of ± 20 ° or less.
If comprised in this way, it will become easy to discharge | emit the hot air which passed the slit on the overlapping part of the cylindrical body to the outside along the inclined surface of the hot air shielding plate more efficiently, and is cylindrical. Excessive heat application to the overlapping part of the body is more effectively mitigated.

<3>前記スリットは、前記ノズル開口から前記筒状体の重ね合わせ部へ向かって縮径していることを特徴とする<1>または<2>に記載の筒状フィルム成形体の製造装置。
このように構成すると、熱風の吹き付けが、ノズルの開口から筒状体の重ね合わせ部へ向かって効率的に集束(規制)されるので、筒状体の重ね合わせ部周辺への過度の熱印加がより一層効果的に緩和される。
<3> The apparatus for producing a cylindrical film molded body according to <1> or <2>, wherein the slit has a diameter reduced from the nozzle opening toward the overlapping portion of the cylindrical body. .
With this configuration, since the blowing of hot air is efficiently focused (regulated) from the nozzle opening toward the overlapping portion of the tubular body, excessive heat application to the periphery of the overlapping portion of the tubular body is performed. Is more effectively mitigated.

<4>帯状の合成樹脂フィルムを供給するフィルム供給手段と、前記合成樹脂フィルムを筒状に湾曲させて該合成樹脂フィルムのフィルム両側縁が重ね合わせられた筒状体を形成する製筒手段と、前記筒状体の重ね合わせ部にノズル開口から熱風を吹き付け、該重ね合わせ部を熱融着させて筒状フィルム成形体を成形する熱風シール手段と、前記筒状フィルム成形体中に被包装物を充填する充填手段と、前記被包装物が充填された前記筒状フィルム成形体を所定の間隔で外部から押圧し、該前記押圧された領域のフィルムを封止切断して、両端部が封止された筒状包装体を複数作製する封止手段とを備え、前記熱風シール手段と前記筒状体の重ね合わせ部との間に、スリットを有する熱風遮蔽板が設けられ、前記ノズル開口および前記筒状体の重ね合わせ部を結ぶ直線上に、前記スリットが配置されていることを特徴とする、筒状包装体の自動充填包装機。
この自動充填包装機は、上記<1>から<3>のいずか1項に記載の筒状フィルム成形体の製造装置を有効に適用可能なものであり、かくして得られる筒状フィルム成形体および筒状包装体は、重ね合わせ部の皺および重ね合わせ部周辺の熱変形や熱収縮、ピンホールの発生が抑制され、見栄えが良く美観に優れ、シール強度およびフィルム強度に優れ、レトルト殺菌などの高温高圧処理においてもパンク等の発生が少なく、また、雑菌の混入を完全に遮断し得る。したがって、この自動充填包装機によれば、高収縮性を有する合成樹脂フィルムを簡便に適用可能となり汎用性が向上され、また、歩留まりが向上するので生産性および経済性が高まる。
<4> Film supply means for supplying a strip-shaped synthetic resin film, and cylinder-producing means for forming a cylindrical body in which the synthetic resin film is curved into a cylindrical shape and the both side edges of the synthetic resin film are overlapped. , Hot air sealing means for blowing hot air from the nozzle opening to the overlapping portion of the cylindrical body, and heat-sealing the overlapping portion to form a cylindrical film molded body; and packaging in the cylindrical film molded body The filling means for filling the product, and the cylindrical film molded body filled with the article to be packaged are pressed from outside at a predetermined interval, the film in the pressed area is sealed and cut, and both end portions are A sealing means for producing a plurality of sealed cylindrical packaging bodies, a hot air shielding plate having a slit is provided between the hot air sealing means and the overlapping portion of the cylindrical bodies, and the nozzle opening And the cylindrical body On a straight line connecting the overlapping portion, wherein the slit is located, the automatic filling and packaging machine of the tubular wrapper.
This automatic filling and packaging machine can effectively apply the tubular film molded body manufacturing apparatus according to any one of <1> to <3> above, and the tubular film molded body thus obtained In addition, the tubular packaging body is suppressed from heat generation, heat shrinkage, and pinholes in the overlapping portion and the periphery of the overlapping portion, and has a good appearance and aesthetics, excellent sealing strength and film strength, retort sterilization, etc. Even in the high-temperature and high-pressure treatment, there is little occurrence of puncture and the like, and contamination of various bacteria can be completely blocked. Therefore, according to this automatic filling and packaging machine, a synthetic resin film having high shrinkage can be easily applied, the versatility is improved, and the yield is improved, so that the productivity and the economy are enhanced.

<5>帯状の合成樹脂フィルムを筒状に湾曲させて該合成樹脂フィルムのフィルム両側縁が重ね合わせられた筒状体を形成する製筒工程と、前記筒状体の重ね合わせ部にノズル開口から熱風を吹き付け、該重ね合わせ部を熱融着させて筒状フィルム成形体を成形する熱風シール工程と、前記筒状フィルム成形体中に被包装物を充填する充填工程と、前記被包装物が充填された前記筒状フィルム成形体を所定の間隔で外部から押圧し、該前記押圧された領域のフィルムを封止切断して、両端部が封止された筒状包装体を複数作製する封止工程とを有し、前記熱風シール工程においては、前記前記ノズル開口および前記筒状体の重ね合わせ部を結ぶ直線上に配置された、熱風遮蔽板のスリットを介して、前記ノズルから前記重ね合わせ部に熱風を吹き付けることを特徴とする筒状包装体の包装方法。
この包装方法は、上記<1>から<3>のいずか1項に記載の筒状体の製造装置、または上記<4>に記載の筒状包装体の自動充填包装機において有効に適用可能な方法であり、重ね合わせ部の皺および重ね合わせ部周辺の熱変形や熱収縮、ピンホールの発生を抑制でき、見栄えが良く美観に優れ、シール強度およびフィルム強度に優れ、レトルト殺菌などの高温高圧処理においてもパンク等の発生が少なく、また、雑菌の混入を完全に遮断し得る筒状フィルム成形体および筒状包装体を簡易且つ低コストで作製可能である。
<5> A cylindrical manufacturing process for forming a cylindrical body in which a belt-shaped synthetic resin film is curved into a cylindrical shape and the both side edges of the synthetic resin film are overlapped; and a nozzle opening is formed in the overlapping portion of the cylindrical body A hot air sealing step for blowing a hot air from the air and heat-sealing the overlapped portion to form a tubular film molded body, a filling step for filling the tubular film molded body with a packaged object, and the packaged object The cylindrical film molded body filled with is pressed from outside at a predetermined interval, and the film in the pressed area is sealed and cut to produce a plurality of cylindrical packaging bodies sealed at both ends. A sealing step, and in the hot air sealing step, from the nozzle through a slit of a hot air shielding plate arranged on a straight line connecting the nozzle opening and the overlapping portion of the cylindrical body. Hot air on the overlapping part Method of packaging cylindrical package, characterized in that the attaching come.
This packaging method is effectively applied to the tubular body manufacturing apparatus according to any one of <1> to <3> above or the automatic filling and packaging machine for tubular packaging bodies according to <4> above. It is possible to suppress the occurrence of wrinkles in the overlapped part and thermal deformation, heat shrinkage, and pinholes around the overlapped part, it has a good appearance and excellent aesthetics, excellent sealing strength and film strength, retort sterilization, etc. Even in the high-temperature and high-pressure treatment, the occurrence of puncture and the like is small, and a cylindrical film molded body and a cylindrical package that can completely block contamination of bacteria can be produced easily and at low cost.

本発明によれば、熱風シール手段から吹き付ける熱風を熱風遮蔽板にて規制することにより、筒状体の重ね合わせ部(シール部)の皺やシール部周辺の熱変形や熱収縮、ピンホールの発生が抑制されるので、見栄えが良く美観に優れ、寸法精度の向上が図られ、シール強度およびフィルム強度に優れる筒状フィルム成形体を、簡易且つ低コストで作製可能となり、その結果、歩留まりが向上し、汎用性、生産性および経済性の向上が図られる。   According to the present invention, the hot air blown from the hot air sealing means is regulated by the hot air shielding plate, so that the thermal deformation and thermal contraction of the overlapping portion (seal portion) of the cylindrical body and the seal portion, pinhole Occurrence is suppressed, so that it is possible to easily and inexpensively produce a tubular film molded body that has a good appearance, excellent aesthetics, improves dimensional accuracy, and has excellent sealing strength and film strength, resulting in a high yield. To improve versatility, productivity and economy.

以下、本発明の実施の形態について、図面を参照して説明する。なお、図面中、同一の要素には同一の符号を付し、重複する説明を省略する。また、上下左右等の位置関係は、特に断らない限り、図面に示す位置関係に基づくものとし、さらに、図面の寸法比率は、図示の比率に限定されるものではない。   Embodiments of the present invention will be described below with reference to the drawings. In the drawings, the same elements are denoted by the same reference numerals, and redundant description is omitted. Further, the positional relationship such as up, down, left and right is based on the positional relationship shown in the drawings unless otherwise specified, and the dimensional ratio in the drawing is not limited to the illustrated ratio.

図1は、本実施形態による自動充填包装機100の要部構造を模式的に示す縦断面図である。自動充填包装機100は、フィルム供給手段11、充填手段21、製筒手段31、熱風シール手段41、封止手段51および熱風遮蔽板61を備える。本実施形態においては、フィルム供給手段11、製筒手段31、熱風シール手段41および熱風遮蔽板61により、帯状の合成樹脂フィルム1から筒状体2が形成され、筒状フィルム成形体3が成形される。   FIG. 1 is a longitudinal cross-sectional view schematically showing a main part structure of an automatic filling and packaging machine 100 according to the present embodiment. The automatic filling and packaging machine 100 includes a film supply unit 11, a filling unit 21, a cylinder making unit 31, a hot air sealing unit 41, a sealing unit 51, and a hot air shielding plate 61. In this embodiment, the tubular body 2 is formed from the strip-shaped synthetic resin film 1 by the film supply means 11, the tube making means 31, the hot air sealing means 41, and the hot air shielding plate 61, and the tubular film molded body 3 is formed. Is done.

フィルム供給手段11は、複数のローラ対11a,11b、送りローラ12a,12bおよび駆動機構(図示せず)を有し、図示しない駆動機構および送りローラ12a,12bの駆動に応じて、原反ロールから帯状の合成樹脂フィルム1を連続的に供給する。合成樹脂フィルム1の供給速度は、通常、10〜60m/min程度であり、使用する合成樹脂フィルム1の種類、厚さ、剛性、融点や、充填される被包装物の素材や粘度などに応じて適宜設定される。   The film supply means 11 has a plurality of roller pairs 11a and 11b, feed rollers 12a and 12b, and a drive mechanism (not shown), and a raw roll according to the drive of the drive mechanism and the feed rollers 12a and 12b (not shown). The strip-shaped synthetic resin film 1 is continuously supplied from the above. The supply speed of the synthetic resin film 1 is usually about 10 to 60 m / min, depending on the type, thickness, rigidity, melting point of the synthetic resin film 1 to be used, and the material and viscosity of the packaged material to be filled. Is set as appropriate.

充填手段21は、中空円筒状の充填ノズル22を有し、その上端に、被包装物を充填ノズル22内に供給するフィードポンプ23が接続されている。充填手段21は、フィードポンプ23の駆動に応じて、被包装物を充填ノズル22内へ供給する。ここで適用される被包装物は、例えば、魚肉や畜肉、液卵、ゼリー、蒟蒻、漬物といった液状あるいは練り状の食品や物品が挙げられるが、これらに特に限定されるものではない。   The filling means 21 has a hollow cylindrical filling nozzle 22, and a feed pump 23 that supplies an article to be packed into the filling nozzle 22 is connected to the upper end of the filling nozzle 21. The filling means 21 supplies the article to be packaged into the filling nozzle 22 according to the drive of the feed pump 23. Examples of the articles to be packaged include liquid or kneaded foods and articles such as fish meat, livestock meat, liquid eggs, jelly, salmon, and pickles, but are not particularly limited thereto.

製筒手段31は、所定形状の金属片を略螺線状に巻いて形成された製筒フォルダ32を有する。製筒フォルダ32は、その内周径が充填ノズル22の外周径よりも大きく形成され、充填ノズル22と略同心円上に配置されている。そのため、充填ノズル22の外周壁と製筒フォルダ32の内周壁とは、所定距離、離間して配置された状態となっている。そして、原反ロールから供給される帯状の合成樹脂フィルム1は、製筒フォルダ32の上面開口から下面開口へと導かれ、製筒フォルダ32内を通過する際に、その螺線構造に追従して筒状に湾曲され、その両端縁1a,1bが重ね合わされた筒状体2となって、製筒フォルダ32の下面開口から図示下方へと移送される。   The tube making means 31 has a tube making folder 32 formed by winding a metal piece of a predetermined shape into a substantially spiral shape. The tube making folder 32 is formed so that the inner peripheral diameter thereof is larger than the outer peripheral diameter of the filling nozzle 22 and is arranged substantially concentrically with the filling nozzle 22. Therefore, the outer peripheral wall of the filling nozzle 22 and the inner peripheral wall of the tube making folder 32 are in a state of being spaced apart by a predetermined distance. The strip-shaped synthetic resin film 1 supplied from the raw roll is guided from the upper surface opening to the lower surface opening of the tube making folder 32 and follows the spiral structure when passing through the tube making folder 32. The cylindrical body 2 is bent into a cylindrical shape and its both end edges 1a and 1b are overlapped, and is transferred downward from the opening of the cylindrical folder 32 in the figure.

熱風シール手段41は、熱風印加ノズル42と、図示しない加圧調整機構および温度調整機構とを有し、製筒フォルダ32の下方において、充填ノズル22の外周壁から所定距離、離間した位置に配置されている。熱風印加ノズル42と充填ノズル22の外周壁との間には、後述する熱風遮蔽板61が配置されている。本実施形態では、この熱風印加ノズル42のノズル開口42aから、熱風遮蔽板61を介して、製筒フォルダ32を通過した筒状体2の重ね合わせ部2a(合成樹脂フィルム1の両端縁1a,1bが重ね合わされた部分)に熱風が吹き付けられ、重ね合わせ部2aが熱融着することにより熱風シールが実施される。ここで、熱風印加ノズル42は、シール性を向上させる観点から、筒状体2の重ね合わせ部2aに対して(重ね合わせ部2aの断面における接線の接点に対して)、垂直方向から熱風を吹き付ける位置、換言すれば、筒状体2の断面における重ね合わせ部2aの接線に対して略垂直方向から熱風を吹き付け可能な位置に配置されていることが好ましい。   The hot air sealing means 41 has a hot air applying nozzle 42, a pressure adjusting mechanism and a temperature adjusting mechanism (not shown), and is arranged at a position separated from the outer peripheral wall of the filling nozzle 22 by a predetermined distance below the tube making folder 32. Has been. Between the hot air applying nozzle 42 and the outer peripheral wall of the filling nozzle 22, a hot air shielding plate 61 described later is disposed. In this embodiment, from the nozzle opening 42a of the hot air application nozzle 42, the overlapping portion 2a (both edges 1a, 2a of the synthetic resin film 1) of the cylindrical body 2 that has passed through the tube making folder 32 through the hot air shielding plate 61. Hot air is blown onto the portion 1b overlapped), and the overlapping portion 2a is heat-sealed, whereby hot air sealing is performed. Here, the hot air applying nozzle 42 emits hot air from the vertical direction to the overlapping portion 2a of the cylindrical body 2 (to the tangential contact point in the cross section of the overlapping portion 2a) from the viewpoint of improving the sealing performance. It is preferable to arrange at a position where hot air can be blown from a substantially vertical direction with respect to a position to be sprayed, in other words, with respect to a tangent line of the overlapping portion 2 a in the cross section of the cylindrical body 2.

熱風の吹き付け圧力は、所望の熱風シールが実行されるべく、熱風印加ノズル42と重ね合わせ部2aとの距離、使用する合成樹脂フィルム1の種類や厚さ、剛性、融点などに応じて適宜設定され、特に限定されるものではないが、0.15〜0.5MPa程度であることが好ましく、0.2〜0.4MPaであることがより好ましい。なお、熱風の吹き付け圧力は、上述した図示しない加圧調整機構に設置された圧力センサにて計測され、また、その加圧調整機構により増減調整される。   The hot air blowing pressure is appropriately set according to the distance between the hot air applying nozzle 42 and the overlapping portion 2a, the type and thickness of the synthetic resin film 1 to be used, the rigidity, the melting point, and the like so that the desired hot air sealing is performed. Although not particularly limited, it is preferably about 0.15 to 0.5 MPa, and more preferably 0.2 to 0.4 MPa. The hot air blowing pressure is measured by a pressure sensor installed in the above-described pressure adjusting mechanism (not shown), and is increased or decreased by the pressure adjusting mechanism.

熱風の温度は、所望の熱風シールが実行されるべく、熱風印加ノズル42と重ね合わせ部2aとの距離、使用する合成樹脂フィルム1の種類や厚さ、剛性、融点などに応じて適宜設定され、特に限定されるものではないが、300〜420℃程度であることが好ましく、330〜410℃であることがより好ましい。なお、熱風の温度は、上述した図示しない温度調整機構に設置された温度センサにて計測され、また、その温度調整機構により増減調整される。   The temperature of the hot air is appropriately set according to the distance between the hot air applying nozzle 42 and the overlapping portion 2a, the type and thickness of the synthetic resin film 1 to be used, the rigidity, the melting point, and the like so that the desired hot air sealing is performed. Although not particularly limited, it is preferably about 300 to 420 ° C, more preferably 330 to 410 ° C. Note that the temperature of the hot air is measured by a temperature sensor installed in the above-described temperature adjustment mechanism (not shown), and is increased or decreased by the temperature adjustment mechanism.

重ね合わせ部2aが熱風シールされることにより、略円筒状の筒状フィルム成形体3が成形される。この筒状フィルム成形体3内には、上述した充填ノズル22から被包装物が充填され、かくして被包装物が充填された筒状フィルム成形体3は、送りローラ12a,12bに挟持されて図示下方へと移送される。   When the overlapping portion 2a is sealed with hot air, a substantially cylindrical tubular film molded body 3 is formed. The tubular film molded body 3 is filled with the article to be packaged from the filling nozzle 22 described above, and thus the cylindrical film molded body 3 filled with the article to be packaged is sandwiched between the feed rollers 12a and 12b. It is transferred downward.

封止手段51は、絞りローラ52a,52bおよび封止機構53を有する。封止手段51は、被包装物が充填された筒状フィルム成形体3を絞りローラ52a,52bにて所定の間隔で外部から押圧し、その押圧部分の被包装物を押しのけた後、封止機構53にてその押圧された領域の合成樹脂フィルム1を集束して封止する。封止機構53における封止処理は、合成樹脂フィルム1の集束部に超音波、高周波または熱を印加して融着させる手法、合成樹脂フィルム1の集束部に合成樹脂製または金属製の線材等をかしめる手法、およびこれらを併用する手法など、公知の手法が採用される。   The sealing unit 51 includes squeezing rollers 52 a and 52 b and a sealing mechanism 53. The sealing means 51 is configured to press the cylindrical film molded body 3 filled with an object to be packaged from the outside at predetermined intervals by the squeezing rollers 52a and 52b, and then to dissipate the object to be packaged at the pressed portion. The mechanism 53 focuses and seals the synthetic resin film 1 in the pressed area. The sealing process in the sealing mechanism 53 includes a technique of applying ultrasonic waves, high frequency, or heat to the converging portion of the synthetic resin film 1 and fusing it, a synthetic resin or metal wire rod to the converging portion of the synthetic resin film 1, or the like. Known methods such as a method of caulking and a method of using these in combination are employed.

上記の封止処理により、両端部が封止された筒状包装体4が製造される。なお、両端部が封止された筒状包装体4を、封止処理と同時にまたは後続する切断工程において、個々の筒状包装体4へと分割してもよい。   By the above sealing process, the cylindrical package 4 having both ends sealed is manufactured. In addition, you may divide | segment the cylindrical packaging body 4 by which the both ends were sealed into each cylindrical packaging body 4 simultaneously with a sealing process, or in the subsequent cutting process.

図2は、本実施形態の熱風遮蔽板61の構造を概略的に示す斜視図であり、図3は、本実施形態の熱風遮蔽板61の相対位置関係を模式的に示す横断面図である。熱風遮蔽板61は、略矩形状の板状体からなり、その平面略中央に長さLおよび幅WのスリットSを有する。   FIG. 2 is a perspective view schematically showing the structure of the hot air shielding plate 61 of the present embodiment, and FIG. 3 is a cross-sectional view schematically showing the relative positional relationship of the hot air shielding plate 61 of the present embodiment. . The hot air shielding plate 61 is formed of a substantially rectangular plate-like body, and has a slit S having a length L and a width W at the center of the plane.

熱風遮蔽板61を構成する材料は、特に限定されるものではなく、金属や合金、無機材料、有機材料およびこれらを複合化した複合体などの公知の材料から任意に選択することができる。自動充填包装機100の稼動時および非稼動時に数百℃程度の温度変化が生じ得ることを考慮すると、熱風遮蔽板61を構成する材料は、耐熱性に優れ線熱膨張係数の小さなものが好ましい。耐熱性に優れ線熱膨張係数の小さな素材としては、例えば、各種セラミックやマイカなどの鉱物類などが挙げられる。   The material which comprises the hot air shielding board 61 is not specifically limited, It can select arbitrarily from well-known materials, such as a metal, an alloy, an inorganic material, an organic material, and the composite_body | complex which compounded these. Considering that a temperature change of about several hundred degrees Celsius may occur during operation and non-operation of the automatic filling and packaging machine 100, it is preferable that the material constituting the hot air shielding plate 61 is excellent in heat resistance and has a small linear thermal expansion coefficient. . Examples of the material having excellent heat resistance and a small linear thermal expansion coefficient include minerals such as various ceramics and mica.

熱風遮蔽板61の外形寸法は、特に限定されるものではなく、所望のサイズに設定できる。熱風遮蔽効果を増大させる観点から、熱風遮蔽板61の幅61Wは、筒状体2の幅(直径)と略同一または筒状体2の幅(直径)よりも大きいことが好ましい。同様の理由により、熱風遮蔽板61の長さ61Lは、熱風印加ノズル42のノズル開口42aの長さよりも大きいことが好ましい。熱風遮蔽板61の厚さ61Tは、強度やクリアランスを考慮して適宜設定すればよいが、0.1〜3mm程度の範囲であることが好ましい。   The outer dimension of the hot air shielding plate 61 is not particularly limited and can be set to a desired size. From the viewpoint of increasing the hot air shielding effect, the width 61W of the hot air shielding plate 61 is preferably substantially the same as the width (diameter) of the cylindrical body 2 or larger than the width (diameter) of the cylindrical body 2. For the same reason, the length 61L of the hot air shielding plate 61 is preferably larger than the length of the nozzle opening 42a of the hot air applying nozzle 42. The thickness 61T of the hot air shielding plate 61 may be appropriately set in consideration of strength and clearance, but is preferably in the range of about 0.1 to 3 mm.

熱風遮蔽板61の形状は、特に限定されるものではなく、矩形状、円形状、楕円状、3角形や5角形などの多角形状、不定形状などを任意に採用することができる。   The shape of the hot air shielding plate 61 is not particularly limited, and a rectangular shape, a circular shape, an elliptical shape, a polygonal shape such as a triangular shape or a pentagonal shape, an indefinite shape, or the like can be arbitrarily employed.

スリットSの外形寸法は、特に限定されるものではなく、所望のシール幅およびシール長さに応じて適宜設定される。熱風がスリットSを通過する際の圧力損失を考慮すると、スリットSの開口面積が大きいことが好ましく、一方、得られるシール部の外形寸法を小さくし美観を向上させる観点からは、ノズル開口42aの開口面積が小さいことが好ましい。本実施形態では、スリットSの幅Wは、0.3〜3mmの範囲で設定することが好ましく、スリットSの長さLは、5〜100mmの範囲で設定することが好ましい。   The outer dimension of the slit S is not particularly limited, and is appropriately set according to a desired seal width and seal length. Considering the pressure loss when the hot air passes through the slit S, it is preferable that the opening area of the slit S is large. On the other hand, from the viewpoint of reducing the outer dimension of the obtained seal portion and improving the aesthetic appearance, It is preferable that the opening area is small. In the present embodiment, the width W of the slit S is preferably set in the range of 0.3 to 3 mm, and the length L of the slit S is preferably set in the range of 5 to 100 mm.

上述した熱風遮蔽板61は、熱風印加ノズル42のノズル開口42aと筒状体2の重ね合わせ部2との間、より具体的には、ノズル開口42aと筒状体2の重ね合わせ部2aを結ぶ直線上にスリットSが配置されるように、図示しない冶具により固定されている。換言すれば、熱風遮蔽板61は、ノズル開口42aと筒状体2の重ね合わせ部2とがスリットSを介して対面する対向位置に配置され、熱風印加ノズル42から吹き出される熱風が、スリットSを介して(通過して)筒状体2の重ね合わせ部2aに直接吹き付けられるように構成されている。   The hot air shielding plate 61 described above has a gap between the nozzle opening 42a of the hot air application nozzle 42 and the overlapping portion 2 of the cylindrical body 2, more specifically, the overlapping portion 2a of the nozzle opening 42a and the cylindrical body 2. It is fixed by a jig (not shown) so that the slits S are arranged on the connecting straight line. In other words, the hot air shielding plate 61 is disposed at a facing position where the nozzle opening 42a and the overlapping portion 2 of the cylindrical body 2 face each other through the slit S, and the hot air blown from the hot air applying nozzle 42 is slit. It is configured to be sprayed directly onto the overlapping portion 2a of the cylindrical body 2 through (pass through) S.

上記の筒状体2、熱風印加ノズル42および熱風遮蔽板61の位置関係は、筒状体2の重ね合わせ部2a周辺への過度の熱印加を緩和して所望のシール性能を得るべく、熱風の圧力および温度、ノズル開口42aの大きさ、スリットSの開口面積などに応じて適宜調整されるが、本実施形態では、例えば、筒状体2と熱風印加ノズル42との距離を0.5〜4mm程度、筒状体2の重ね合わせ部42aと熱風遮蔽板61のスリットSとの距離Dを0.05〜3mm程度にすることが好ましい。   The positional relationship among the cylindrical body 2, the hot air application nozzle 42, and the hot air shielding plate 61 is such that the hot air is relaxed to obtain a desired sealing performance by relaxing excessive heat application to the periphery of the overlapping portion 2a of the cylindrical body 2. Is appropriately adjusted according to the pressure and temperature, the size of the nozzle opening 42a, the opening area of the slit S, etc. In this embodiment, for example, the distance between the cylindrical body 2 and the hot air applying nozzle 42 is set to 0.5. It is preferable that the distance D between the overlapping portion 42a of the cylindrical body 2 and the slit S of the hot air shielding plate 61 is about 0.05 to 3 mm.

また、熱風遮蔽板61は、筒状体2の重ね合わせ部2aの接線に対して(筒状体2の重ね合わせ部2aの断面における接線の接点に対して)、略平行にまたは±20°の傾きをもって配置されていることが好ましい。ここで、±20°の傾きをもって配置するとは、前述した重ね合わせ部2aの接線と熱風遮蔽板61がなす角度θが、0°<θ≦20°または−20°≦θ<0°の関係を満たすことを意味する。筒状体2の重ね合わせ部2aに吹き付けられた熱風は重ね合わせ部2aの周辺に滞留し得るが、このように熱風遮蔽板61を配置すると、熱風が熱風遮蔽板61の面に沿って重ね合わせ部2から離間する方向(図3においてベクトルA方向)へと排出され易くなり、また、熱風遮蔽板61を±20°の傾きをもって配置した場合には熱風の排出作用がより効果的に発揮されるので、筒状体2の重ね合わせ部2a周辺への過度の熱印加がより効果的に緩和される。一方、筒状体2(合成樹脂フィルム1)の流れ方向に長尺の重ね合わせ部2aを1回の熱風シール処理にて均一にシールし生産性を高める観点から、熱風遮蔽板61は、筒状体2の軸方向に対して、略平行に配置されていることが好ましい。   Further, the hot air shielding plate 61 is substantially parallel to the tangent of the overlapping portion 2a of the cylindrical body 2 (to the contact point of the tangent in the cross section of the overlapping portion 2a of the cylindrical body 2) or ± 20 °. It is preferable that they are arranged with an inclination of. Here, the arrangement with an inclination of ± 20 ° means that the angle θ formed between the tangent line of the overlapping portion 2a and the hot air shielding plate 61 is 0 ° <θ ≦ 20 ° or −20 ° ≦ θ <0 °. Means satisfying. The hot air blown to the overlapping portion 2a of the cylindrical body 2 can stay around the overlapping portion 2a. However, when the hot air shielding plate 61 is arranged in this way, the hot air is overlapped along the surface of the hot air shielding plate 61. It becomes easy to be discharged in a direction away from the mating portion 2 (vector A direction in FIG. 3), and when the hot air shielding plate 61 is arranged with an inclination of ± 20 °, the hot air discharging action is more effectively exhibited. Therefore, excessive heat application to the periphery of the overlapping portion 2a of the cylindrical body 2 is more effectively mitigated. On the other hand, from the viewpoint of improving productivity by uniformly sealing the overlapping portion 2a long in the flow direction of the cylindrical body 2 (synthetic resin film 1) by one hot air sealing process, It is preferable that they are arranged substantially parallel to the axial direction of the body 2.

合成樹脂フィルム1の素材は、熱風の印加による熱融着が可能なものであれば、特に制限なく用いることができ、例えば、高密度または低密度ポリエチレン(PE)やポリプロピレン(PP)およびこれらの共重合体などに代表されるポリオレフィン系樹脂、ナイロン、ポリメタキシリレンアジパミド(MXD6ナイロン)などに代表されるポリアミド系樹脂、ブタジエンを加えたハイインパクトポリスチレン(HIPS)に代表されるポリスチレン系樹脂が挙げられる。これらのなかでも、熱風シール特性、環境への配慮および耐熱性の観点から、高密度ポリエチレン、ポリプロピレンなどのポリオレフィン系樹脂が好適に用いられる。なお、上記において共重合体とは、他の共重合体成分を含むものを包含し、他の共重合体成分には、所謂α−オレフィンが含まれる。   The material of the synthetic resin film 1 can be used without particular limitation as long as it can be heat-sealed by application of hot air, such as high-density or low-density polyethylene (PE), polypropylene (PP), and these. Polyolefin resins typified by copolymers, polyamide resins typified by nylon, polymetaxylylene adipamide (MXD6 nylon), polystyrene resins typified by high impact polystyrene (HIPS) with butadiene added Is mentioned. Among these, polyolefin resins such as high-density polyethylene and polypropylene are preferably used from the viewpoints of hot air sealing characteristics, environmental considerations, and heat resistance. In the above, the copolymer includes those containing other copolymer components, and the other copolymer components include so-called α-olefins.

合成樹脂フィルム1は、単層のフィルムであっても、複数のフィルムが積層された積層フィルムであってもよく、種々の機能性を付与可能である観点から、例えば、ベースフィルムの片面および/または両面にシーラントフィルムを積層させた積層フィルムが好適に用いられる。なお、上記の積層フィルムには、必須とされる各々の層の間に、接着層やガスバリア層などを介在したものが包含される。この種の積層フィルムは、例えば、2枚以上のフィルムを貼り合わせるドライラミネート法や、一方のフィルム上に他方の樹脂組成物を溶融押出して積層させる押出しラミネート法の他、樹脂組成物を共押出した後に冷却して積層を成形する共押出法などの公知の手法により製造可能である。   The synthetic resin film 1 may be a single layer film or a laminated film in which a plurality of films are laminated. From the viewpoint that various functions can be imparted, for example, one side of the base film and / or Or the laminated film which laminated | stacked the sealant film on both surfaces is used suitably. The laminated film includes a film in which an adhesive layer, a gas barrier layer, or the like is interposed between each essential layer. This type of laminated film includes, for example, a dry lamination method in which two or more films are bonded together, an extrusion lamination method in which the other resin composition is melt-extruded and laminated on one film, and a resin composition is co-extruded. Then, it can be manufactured by a known method such as a co-extrusion method in which a laminate is formed by cooling.

レトルト用途に用いる場合には、合成樹脂フィルム1は、レトルト殺菌処理に耐え得るフィルム強度および耐熱性を有することが要求されるので、例えば、ベースフィルムとしてのポリアミド系樹脂フィルム層の片面および/または両面に、シーラント層としてのポリエチレンやポリプロピレンなどのポリオレフィン系樹脂層を設けた積層フィルムが好適に用いられる。   When used for retort applications, the synthetic resin film 1 is required to have film strength and heat resistance that can withstand retort sterilization treatment, and thus, for example, one side of a polyamide-based resin film layer as a base film and / or A laminated film provided with a polyolefin resin layer such as polyethylene or polypropylene as a sealant layer on both sides is preferably used.

上述した自動充填包装機100においては、熱風遮蔽板61により、重ね合わせ部2a周辺への熱風の吹き付けが遮蔽され、熱風の吹き付けが重ね合わせ部2aに局所的に収束されるので、重ね合わせ部2a周辺への過度の熱印加が緩和される。したがって、この自動充填包装機100は、シーラント層が高い熱収縮性を有する合成樹脂フィルム1(延伸処理されたシーラント層を有する積層フィルム、共押出共延伸積層フィルム)や、ASTM D−2732に準拠して測定される120℃の熱収縮率が縦方向(MD)/横方向(TD)=15〜30%/10〜20%程度の高い熱収縮性を有する合成樹脂フィルム1を用いても、美観に優れ、寸法精度、シール強度およびフィルム強度に優れる筒状フィルム成形体3、筒状包装体4が作製可能である点において、従来に比して優位性を有する。これらの高い熱収縮性を有する合成樹脂フィルム1としては、例えば、ポリオレフィン系樹脂を高延伸した単層フィルム、ポリアミド系樹脂フィルム層の片面および/または両面に高延伸したポリオレフィン系樹脂フィルム層をラミネートした積層フィルム、共押出法により成形されインフレーション法で共延伸された共押出共延伸積層フィルム(例えば、ポリアミド系樹脂フィルム層の片面および/または両面にポリオレフィン系樹脂フィルム層が設けられた積層フィルム)が挙げられる。   In the automatic filling and packaging machine 100 described above, the hot air shielding plate 61 shields the blowing of hot air around the overlapping portion 2a and the hot air blowing is locally converged on the overlapping portion 2a. Excessive heat application around 2a is alleviated. Therefore, this automatic filling and packaging machine 100 is compliant with the synthetic resin film 1 (laminate film having a stretched sealant layer, co-extrusion co-stretch laminate film) and ASTM D-2732 in which the sealant layer has high heat shrinkability. Even if using the synthetic resin film 1 having a high heat shrinkage of about 120-30 ° C. and a heat shrinkage of 120 ° C. in the machine direction (MD) / transverse direction (TD) = 15-30% / 10-20%, The tubular film molded body 3 and the tubular package 4 that are excellent in aesthetics and excellent in dimensional accuracy, sealing strength, and film strength are superior to those in the prior art. As these synthetic resin films 1 having high heat shrinkability, for example, a single layer film obtained by highly stretching a polyolefin resin, a polyolefin resin film layer highly stretched on one side and / or both sides of a polyamide resin film layer are laminated. Laminated film, co-extruded co-stretched laminated film formed by co-extrusion method and co-stretched by inflation method (for example, laminated film in which a polyolefin-based resin film layer is provided on one and / or both sides of a polyamide-based resin film layer) Is mentioned.

一方、自動充填包装機100に熱収縮性のないまたは熱収縮性に乏しい合成樹脂フィルム1を適用した場合には、上述した各種性能がより一層向上された筒状フィルム成形体3、筒状包装体4が作製可能である点において、従来に比して優位性を有するものとなる。   On the other hand, when the synthetic resin film 1 having no heat shrinkage or poor heat shrinkability is applied to the automatic filling and packaging machine 100, the tubular film molded body 3 and the tubular packaging in which the various performances described above are further improved. In the point which can produce the body 4, it has an advantage compared with the past.

以上、上述した自動充填包装機100および筒状包装体4の包装方法によれば、寸法精度、シール強度およびフィルム強度に優れ、美観に優れる商品価値の高い筒状フィルム成形体3および筒状包装体4が得られる。しかも、自動充填包装機100の構成が簡易且つ低コストで実現可能であり、プロセス裕度の向上が図られ、汎用性、生産性および経済性の向上が図られる。   As described above, according to the packaging method of the automatic filling and packaging machine 100 and the cylindrical packaging body 4 described above, the cylindrical film molded body 3 and the cylindrical packaging with high commercial value that are excellent in dimensional accuracy, sealing strength, and film strength and excellent in aesthetics. A body 4 is obtained. In addition, the configuration of the automatic filling and packaging machine 100 can be realized simply and at low cost, the process tolerance can be improved, and versatility, productivity, and economic efficiency can be improved.

なお、本発明は、上記の実施形態のみに限定されるものではなく、その要旨を逸脱しない限り、種々の形態で実施することができる。   In addition, this invention is not limited only to said embodiment, Unless it deviates from the summary, it can implement with a various form.

例えば、熱風遮蔽板61を複数の板状体を組み合わせて構成したり、スリットSを複数の板状体の凹部を組み合わせて構成したり、熱風遮蔽板61を肉厚の成形品から構成してもよい。自動充填包装機100の充填ノズル22や熱風印加ノズル42、熱風遮蔽板61の配置状況が、熱風遮蔽板61の設置クリアランスの確保が困難な場合であっても、このようにして本発明を実施可能である。   For example, the hot air shielding plate 61 is configured by combining a plurality of plate-shaped bodies, the slit S is configured by combining concave portions of the plurality of plate-shaped bodies, or the hot air shielding plate 61 is configured by a thick molded product. Also good. Even if it is difficult to secure the installation clearance of the hot air shielding plate 61 due to the arrangement of the filling nozzle 22, the hot air applying nozzle 42, and the hot air shielding plate 61 of the automatic filling and packaging machine 100, the present invention is implemented in this way. Is possible.

また、図4に示すように、スリットSをノズル開口42aから筒状体2の重ね合わせ部2aへ向かって縮径した形状にしてもよい。ここで、縮径した形状とは、スリットSの開口面積が、ノズル開口42aから筒状体2の重ね合わせ部2aへ向かって、連続的および/または段階的に小さくなっていることを意味する。このように構成すると、ノズル開口42aから噴射される熱風が効果的に集束されるので、筒状体2の重ね合わせ部2aへの熱風の局所的な吹き付けが簡易且つ低コストで実施可能となる。   Further, as shown in FIG. 4, the slit S may be reduced in diameter from the nozzle opening 42 a toward the overlapping portion 2 a of the cylindrical body 2. Here, the reduced diameter shape means that the opening area of the slit S decreases continuously and / or stepwise from the nozzle opening 42 a toward the overlapping portion 2 a of the cylindrical body 2. . If comprised in this way, since the hot air injected from the nozzle opening 42a is effectively converged, the local blowing of the hot air to the overlapping portion 2a of the cylindrical body 2 can be performed easily and at low cost. .

以下、実施例および比較例により本発明を詳細に説明するが、本発明はこれらに特に限定されるものではない。   EXAMPLES Hereinafter, although an Example and a comparative example demonstrate this invention in detail, this invention is not specifically limited to these.

(実施例1)
以下の方法により、高収縮性フィルムを作製した。まず、最終フィルムの層構成が、ポリプピロン[サンアロマー(株)社製 ADSYL5C37F<商品名>:厚み13μm]/ポリプロピレン系接着性樹脂[三井化学(株)アドマーQF580<商品名>:厚み5μm]/ナイロン[三菱瓦斯化学(株)社製MXナイロン6007<商品名>:厚み9μm]/ポリプロピレン系接着性樹脂[三井化学(株)アドマーQF580<商品名>:厚み5μm]/ポリプピロン[サンアロマー(株)社製 ADSYL5C37F<商品名>:厚み13μm]の5層となるように、口径200mmの環状5層ダイを用いて管状に溶融共押出しした。この管状体を過冷却後、インフレーション二軸延伸法を用いて縦方向(MD方向)に約4倍、横方向(TD方向)に約5倍に同時二軸延伸し、熱処理後、最終厚み約45μm、フィルム幅約1mの共押出共延伸積層フィルムを得た。得られた幅約1mの積層フィルムを巻き取り、そのフィルムを捲きほどきながら幅96mmに裁断し、再度巻き取ることで、帯状の合成樹脂フィルム1として使用する高収縮性フィルムの原反ロールを作製した。
Example 1
A highly shrinkable film was produced by the following method. First, the layer structure of the final film is polypropylon [San Aroma Co., Ltd. ADSYL5C37F <product name>: thickness 13 μm] / polypropylene adhesive resin [Mitsui Chemicals, Inc. Admer QF580 <product name>: thickness 5 μm] / nylon [Mitsubishi Gas Chemical Co., Ltd. MX Nylon 6007 <Product Name>: Thickness 9 [mu] m] / Polypropylene Adhesive Resin [Mitsui Chemicals Co., Ltd. Admer QF580 <Product Name>: Thickness 5 [mu] m] / Polypropylene [Sun Allomer Co., Ltd. Manufactured by ADSYL5C37F <product name>: thickness 13 μm] was melt-coextruded into a tube using an annular five-layer die having a diameter of 200 mm. After this tube is supercooled, it is simultaneously biaxially stretched approximately 4 times in the machine direction (MD direction) and approximately 5 times in the transverse direction (TD direction) using the inflation biaxial stretching method. A coextruded co-stretched laminated film having a thickness of 45 μm and a film width of about 1 m was obtained. The obtained laminated film having a width of about 1 m is wound, cut into a width of 96 mm while unrolling the film, and wound again to form a highly shrinkable film roll used as the belt-shaped synthetic resin film 1. Produced.

上記の高収縮性フィルムの120℃の熱収縮率を、ASTM D−2732−03に準拠し、長手方向に約20cmの長さで切断して得た試験片を用いて、以下の手順で測定したところ、縦方向(MD)/横方向(TD)=20%/17%であった。
まず、試験片を温度20℃、相対湿度60%の条件下で24時間放置保管した後、縦方向(MD方向)と横方向(TD方向)の寸法を測定(MD方向で約20cm間隔、2ケ所を測定。MD方向を測定した位置でTD方向も2ケ所を測定。)し、それぞれの長さの平均値をL1MDおよびL1TDとする。
次に、試験片を温度120℃の熱水中で20分間熱処理した後、試験片の表面に付着した水分をろ紙で除去し、温度20℃、相対湿度60%の条件下で24時間放置保管した後、縦方向(MD方向)と横方向(TD方向)の寸法(熱処理前に測定したそれぞれの部分)を測定し、それぞれの長さの平均値をL2MDおよびL2TDとする。
そして、次式を用いて、MD方向およびTD方向の熱収縮率を算出する。
MD方向の熱収縮率(%) = 100×(L1MD−L2MD)/L1MD
TD方向の熱収縮率(%) = 100×(L1TD−L2TD)/L1TD
The heat shrinkage rate at 120 ° C. of the above highly shrinkable film was measured according to the following procedure using a test piece obtained by cutting in a length direction of about 20 cm in accordance with ASTM D-2732-03. As a result, the longitudinal direction (MD) / lateral direction (TD) was 20% / 17%.
First, the test piece was stored for 24 hours under conditions of a temperature of 20 ° C. and a relative humidity of 60%, and then the dimensions in the vertical direction (MD direction) and the horizontal direction (TD direction) were measured (approximately 20 cm intervals in the MD direction, (Measure two locations. Measure the MD direction at two locations in the TD direction as well.) The average values of the respective lengths are taken as L1 MD and L1 TD .
Next, after heat-treating the test piece in hot water at a temperature of 120 ° C. for 20 minutes, the water adhering to the surface of the test piece is removed with a filter paper and stored for 24 hours at a temperature of 20 ° C. and a relative humidity of 60%. after, the dimension in the longitudinal direction (MD direction) and transverse direction (TD direction) of the (each portion was measured before the heat treatment) was measured, each of the average length and L2 MD and L2 TD.
And the thermal contraction rate of MD direction and TD direction is calculated using following Formula.
Thermal shrinkage in MD direction (%) = 100 × (L1 MD− L2 MD ) / L1 MD
Thermal contraction rate (%) in TD direction = 100 × (L1 TD −L2 TD ) / L1 TD

そして、自動充填包装機100として、直方体状のスリットSが平面中央部に設けられた熱風遮蔽板61(セラミックス製;長さ70mm、幅35mm、厚さ1mm)を設置した、熱風シール方式の旭化成ケミカルズ(株)社製「ADP(登録商標)F型」)を使用し、上記の高収縮性フィルム(原反ロール)を、この自動充填包装機100に懸架し、図1に示すように、製筒フォルダ32によりフィルムの両側縁を重ね合わせて筒状体2を成形し、図4に示すように、その重ね合わせ部2aに熱風印加ノズル42から熱風を垂直に吹き付けて封筒貼りに熱風シールすることにより、折幅40mmの筒状フィルム成形体3を成形し、引き続き、この筒状フィルム成形体3内に充填ノズル22から魚肉ソーセージ原料すり身を充填し、封止手段51にて両端をアルミワイヤーにて結紮密封することにより、長さ200mmの筒状包装体4(魚肉ソーセージ包装体)5,000本を得た。
以下に、自動充填包装機100の各種設定を示す。
フィルム速度 : 35m/min
ショット数 : 150本/分
ノズル開口42a : 長さ55mm、幅0.3mm
熱風温度 : 370℃ (ノズル内部)
熱風圧力 : 0.30MPa(ノズル内部)
スリットSのサイズ : 長さL60mm、幅W0.3mm
重ね合わせ部2aとスリットSとの距離D: 0.5mm
熱風遮蔽板61の傾きθ : 10°
As the automatic filling and packaging machine 100, a hot air sealing type Asahi Kasei with a hot air shielding plate 61 (made of ceramics; length 70 mm, width 35 mm, thickness 1 mm) having a rectangular parallelepiped slit S at the center of the plane is installed. Chemicals Co., Ltd. "ADP (registered trademark) F type"), the above-described highly shrinkable film (raw fabric roll) is suspended on this automatic filling and packaging machine 100, and as shown in FIG. The cylindrical body 2 is formed by overlapping both side edges of the film by the tube making folder 32, and as shown in FIG. 4, hot air is blown vertically from the hot air applying nozzle 42 to the overlapping portion 2a to seal the envelope with hot air Then, the tubular film molded body 3 having a folding width of 40 mm is molded, and subsequently, the sausage raw material for fish sausage is filled into the tubular film molded body 3 from the filling nozzle 22 and sealed. By ligating sealed at both ends by aluminum wire at 1, the tubular package 4 (fish sausage package) of length 200mm was obtained 5,000.
Below, various settings of the automatic filling and packaging machine 100 will be shown.
Film speed: 35 m / min
Number of shots: 150 / min Nozzle opening 42a: Length 55mm, width 0.3mm
Hot air temperature: 370 ° C (inside the nozzle)
Hot air pressure: 0.30 MPa (inside the nozzle)
Size of slit S: Length L60mm, width W0.3mm
Distance D between overlapping portion 2a and slit S: 0.5 mm
Inclination θ of the hot air shielding plate 61: 10 °

得られた筒状包装体4を用い、以下に示す評価方法に基づいて、レトルトパンク率、シール強度、ピンホール率、シール幅のばらつき、シール部の平均表面粗さを評価した。表1に、評価結果を示す。   Using the obtained cylindrical package 4, the retort puncture rate, the seal strength, the pinhole rate, the variation in the seal width, and the average surface roughness of the seal portion were evaluated based on the following evaluation method. Table 1 shows the evaluation results.

(実施例2)
熱風遮蔽板61のスリットSの幅Wを0.5mmに変更したこと以外は、実施例1と同様に筒状包装体4を製造し、実施例1と同様の評価を行った。表1に、評価結果を示す。
(実施例3)
熱風遮蔽板61のスリットSの幅Wを1mmに変更したこと以外は、実施例1と同様に筒状包装体4を製造し、実施例1と同様の評価を行った。表1に、評価結果を示す。
(実施例4)
熱風遮蔽板61のスリットSの幅Wを2.5mmに変更したこと以外は、実施例1と同様に筒状包装体4を製造し、実施例1と同様の評価を行った。表1に、評価結果を示す。
(実施例5)
熱風遮蔽板61のスリットSの幅Wを3mmに変更したこと以外は、実施例1と同様に筒状包装体4を製造し、実施例1と同様の評価を行った。表1に、評価結果を示す。
(Example 2)
Except that the width W of the slit S of the hot air shielding plate 61 was changed to 0.5 mm, the cylindrical package 4 was produced in the same manner as in Example 1, and the same evaluation as in Example 1 was performed. Table 1 shows the evaluation results.
(Example 3)
Except having changed the width W of the slit S of the hot air shielding board 61 to 1 mm, the cylindrical package 4 was manufactured similarly to Example 1, and the same evaluation as Example 1 was performed. Table 1 shows the evaluation results.
Example 4
Except that the width W of the slit S of the hot air shielding plate 61 was changed to 2.5 mm, the cylindrical package 4 was produced in the same manner as in Example 1, and the same evaluation as in Example 1 was performed. Table 1 shows the evaluation results.
(Example 5)
Except that the width W of the slit S of the hot air shielding plate 61 was changed to 3 mm, the cylindrical package 4 was produced in the same manner as in Example 1, and the same evaluation as in Example 1 was performed. Table 1 shows the evaluation results.

次に、熱風遮蔽板61の設置位置の変更によるシール性能への影響を評価すべく、以下の実施例6〜10を行った。なお、筒状体2の重ね合わせ部2aと熱風遮蔽板61のスリットSとの距離Dが大きくなるほどシール温度(重ね合わせ部2aの表面温度)が低下する傾向にあるため、ここでは、シール温度が150℃となるように、温度計(型式:SK−1250MC、株式会社 佐藤計量器製作所製、センサー:MC−K101)を用いてモニタリングしながら、熱風温度を各々調整した。
(実施例6)
熱風遮蔽板61の傾きθを0°、重ね合わせ部2aとスリットSとの距離Dを0.05mm、熱風温度を330℃(ノズル内部)に変更したこと以外は、実施例3と同様に筒状包装体4を製造し、実施例3と同様の評価を行った。表1に、評価結果を示す。
(実施例7)
熱風遮蔽板61の傾きθを20°、重ね合わせ部2aとスリットSとの距離Dを1mm、熱風温度を380℃(ノズル内部)に変更したこと以外は、実施例3と同様に筒状包装体4を製造し、実施例3と同様の評価を行った。表1に、評価結果を示す。
(実施例8)
熱風遮蔽板61の傾きθを−10°、重ね合わせ部2aとスリットSとの距離Dを0.5mmに変更したこと以外は、実施例3と同様に筒状包装体4を製造し、実施例3と同様の評価を行った。表1に、評価結果を示す。
(実施例9)
熱風遮蔽板61の傾きθを−20°、重ね合わせ部2aとスリットSとの距離Dを2mm、熱風温度を390℃(ノズル内部)に変更したこと以外は、実施例3と同様に筒状包装体4を製造し、実施例3と同様の評価を行った。表1に、評価結果を示す。
(実施例10)
重ね合わせ部2aとスリットSとの距離Dを3mm、熱風温度を410℃(ノズル内部)に変更したこと以外は、実施例3と同様に筒状包装体4を製造し、実施例3と同様の評価を行った。表1に、評価結果を示す。
Next, in order to evaluate the influence on the sealing performance due to the change in the installation position of the hot air shielding plate 61, the following Examples 6 to 10 were performed. Here, the seal temperature (surface temperature of the overlapping portion 2a) tends to decrease as the distance D between the overlapping portion 2a of the cylindrical body 2 and the slit S of the hot air shielding plate 61 increases. The hot air temperature was adjusted while monitoring using a thermometer (model: SK-1250MC, manufactured by Sato Keiki Seisakusho Co., Ltd., sensor: MC-K101) so as to be 150 ° C.
(Example 6)
The cylinder is the same as in Example 3 except that the inclination θ of the hot air shielding plate 61 is changed to 0 °, the distance D between the overlapping portion 2a and the slit S is changed to 0.05 mm, and the hot air temperature is changed to 330 ° C. (inside the nozzle). A package 4 was produced and evaluated in the same manner as in Example 3. Table 1 shows the evaluation results.
(Example 7)
Cylindrical packaging as in Example 3, except that the inclination θ of the hot air shielding plate 61 is 20 °, the distance D between the overlapping portion 2a and the slit S is 1 mm, and the hot air temperature is 380 ° C. (inside the nozzle). The body 4 was manufactured and evaluated in the same manner as in Example 3. Table 1 shows the evaluation results.
(Example 8)
Except that the inclination θ of the hot air shielding plate 61 was changed to −10 ° and the distance D between the overlapping portion 2a and the slit S was changed to 0.5 mm, the cylindrical package 4 was manufactured and carried out in the same manner as in Example 3. Evaluation similar to Example 3 was performed. Table 1 shows the evaluation results.
Example 9
Except that the inclination θ of the hot air shielding plate 61 is −20 °, the distance D between the overlapping portion 2a and the slit S is 2 mm, and the hot air temperature is changed to 390 ° C. (inside the nozzle), the tubular shape is the same as in the third embodiment. The package 4 was manufactured and evaluated in the same manner as in Example 3. Table 1 shows the evaluation results.
(Example 10)
A tubular package 4 was produced in the same manner as in Example 3 except that the distance D between the overlapping portion 2a and the slit S was changed to 3 mm and the hot air temperature was changed to 410 ° C. (inside the nozzle). Was evaluated. Table 1 shows the evaluation results.

(比較例1)
スリットS付き熱風遮蔽板61を設置しないこと以外は、実施例1と同様に筒状包装体4を製造し、実施例1と同様の各種評価を行った。表1に、評価結果を示す。
(Comparative Example 1)
Except not installing the hot-air shielding board 61 with the slit S, the cylindrical package 4 was manufactured similarly to Example 1, and various evaluation similar to Example 1 was performed. Table 1 shows the evaluation results.

Figure 2009107715
Figure 2009107715

(実施例11)
低収縮性フィルムとして、厚み55μm、幅96mmの旭化成ケミカルズ(株)社製のナイロン系多層ラミネートフィルム(商品名=「90g用96mm」:層構成は、未延伸ポリプロピレンフィルム/接着剤/延伸ナイロンフィルム/接着剤/未延伸ポリプロピレンフィルム)を使用した以外は、実施例1と同様に筒状包装体4を製造し、実施例1と同様の評価を行った。表2に、評価結果を示す。
なお、この低収縮性フィルムの120℃の熱収縮率を、前記の熱収縮率測定方法と同様の方法で測定したところ、縦方向(MD)/横方向(TD)=14%/8%であった。
(Example 11)
Nylon multilayer laminate film manufactured by Asahi Kasei Chemicals Co., Ltd. having a thickness of 55 μm and a width of 96 mm as a low shrinkage film (trade name = “96 mm for 90 g”: layer structure is unstretched polypropylene film / adhesive / stretched nylon film Except for using / adhesive / unstretched polypropylene film), a cylindrical package 4 was produced in the same manner as in Example 1, and the same evaluation as in Example 1 was performed. Table 2 shows the evaluation results.
In addition, when the heat shrinkage rate at 120 ° C. of this low shrinkage film was measured by the same method as the heat shrinkage rate measuring method, the longitudinal direction (MD) / lateral direction (TD) = 14% / 8%. there were.

(比較例2)
スリットS付き熱風遮蔽板61を設置しないこと以外は、実施例11と同様に筒状包装体4を製造し、実施例11と同様の評価を行った。表2に、評価結果を示す。
(Comparative Example 2)
Except not installing the hot air shielding board 61 with the slit S, the cylindrical package 4 was manufactured similarly to Example 11, and the same evaluation as Example 11 was performed. Table 2 shows the evaluation results.

Figure 2009107715
Figure 2009107715

各測定方法および評価基準を、以下に記す。
(1)レトルトパンク率(加圧加熱殺菌後のシール部分の破袋率)
得られた5,000本の筒状包装体4を、加熱缶内ゲージ圧が0.25MPa、温度が120℃で、20分間の条件にて加圧加熱殺菌を行い、次に、加熱缶内圧力を維持したまま温度30℃まで加圧冷却し、その後、圧力を開放し加熱缶から筒状包装体4を取り出して最終包装体とした。得られた最終包装体において、シール部分が破袋した数を調査し、次式によりレトルトパンク率(破袋率)を算出した。評価基準を以下に示す。
レトルトパンク率(%)=(破袋本数/5,000本)×100
レトルトパンク率(%) 評価記号
0.04未満 ◎
0.04以上0.2未満 ○
0.2以上0.5未満 △
0.5 以上 ×
Each measurement method and evaluation criteria are described below.
(1) Retort puncture rate (bag breaking rate of the sealed part after pressure heat sterilization)
The obtained 5,000 cylindrical packaging bodies 4 were sterilized under pressure and heat for 20 minutes at a gauge pressure of 0.25 MPa and a temperature of 120 ° C. While maintaining the pressure, it was pressurized and cooled to a temperature of 30 ° C., then the pressure was released, and the cylindrical package 4 was taken out of the heating can to obtain a final package. In the obtained final package, the number of broken seals was investigated, and the retort puncture rate (bag breakage rate) was calculated by the following equation. The evaluation criteria are shown below.
Retort puncture rate (%) = (number of broken bags / 5,000) × 100
Retort puncture rate (%) Evaluation symbol Less than 0.04 ◎
0.04 or more and less than 0.2 ○
0.2 or more and less than 0.5
0.5 or more ×

(2)シール強度(加圧加熱殺菌後のシール強度)
シール強度の測定は、ASTM F−88 FIG.1 LAP SEALに準拠し、以下の手順で行った。
まず、上記のレトルトパンクの評価において、破袋(レトルトパンク)が発生しなかったレトルト処理後の最終包装体から、各々、無作為に10本採取し、最終包装体のシール線の真向かい側にシール線と平行に切り込みを入れて開封し、被包装物である魚肉すり身を除去し、表面に付着した魚肉すり身などを水洗し、水分をろ紙で除去した後、温度20℃、相対湿度60%の条件下にて24時間放置保管した。その後、上記のようにして得られた開封済フィルム(包装フィルム)を、シール部と直交する方向に切断し、シール部が長手方向の略中央部に存在する、幅15mm、長さ60mmの短冊状の試験片(短冊の長手方向の略中央部に、その長手方向に直交してシール線が存在するもの)を作製した。
そして、テンシロン万能試験機(商品名:RTC−1210、株式会社 オリエンテック社製)を用い、フィルムチャック部に短冊状の試験片の長手方向の両端部を固定し、チャック間距離10mm、引張速度300mm/minの条件で、シール部のせん断シール強度(シール部の破断応力)を測定し(測定1回/1本)、10本の最終包装体のシール強度の平均値を算出した。評価基準を以下に示す。
シール強度(N/15mm幅) 評価記号
35以上 ◎
25以上35未満 ○
5以上25未満 △
5未満 ×
(2) Seal strength (seal strength after pressure heat sterilization)
The measurement of seal strength is performed according to ASTM F-88 FIG. In accordance with 1 LAP SEAL, the procedure was as follows.
First, in the evaluation of the above retort puncture, 10 pieces were randomly sampled from the final package after the retort treatment in which no bag breakage (retort puncture) occurred, and the sample was directly opposite the seal line of the final package. Opened by cutting in parallel with the seal line, removing fish surimi which is a packaged item, washing fish surimi attached to the surface with water, removing moisture with filter paper, temperature 20 ° C, relative humidity 60% And stored for 24 hours under the above conditions. Thereafter, the unsealed film (packaging film) obtained as described above is cut in a direction orthogonal to the seal portion, and a strip having a width of 15 mm and a length of 60 mm in which the seal portion is present at a substantially central portion in the longitudinal direction. A test piece (one having a seal line perpendicular to the longitudinal direction at a substantially central portion in the longitudinal direction of the strip) was prepared.
Then, using Tensilon universal tester (trade name: RTC-1210, manufactured by Orientec Co., Ltd.), both ends in the longitudinal direction of the strip-shaped test piece are fixed to the film chuck part, the distance between chucks is 10 mm, and the tensile speed is Under the condition of 300 mm / min, the shear seal strength (breaking stress of the seal portion) of the seal portion was measured (measurement once / piece), and the average value of the seal strength of the ten final package bodies was calculated. The evaluation criteria are shown below.
Seal strength (N / 15mm width) Evaluation symbol 35 or more ◎
25 or more and less than 35 ○
5 to less than 25 △
Less than 5 ×

(3)ピンホール率(シール部分のピンホール率)
上記のレトルトパンクの評価において、破袋(レトルトパンク)が発生しなかったレトルト処理後の最終包装体から、各々、無作為に1,000本採取し、メチレンブルー水溶液(100重量ppm)の中に1日間浸した。その後、メチレンブルー水溶液から最終包装体を取り出し、最終包装体のシール部の内容物の染色の有無を目視にて観察した(シール部にピンホール部分が存在すれば、その箇所からメチレンブルー水溶液が最終包装体の中に浸透するため内容物が青く染まる)。そして、シール部の内容物の染色が認められた本数を計測し、次式にしたがい、ピンホール率を算出した。評価基準を以下に示す。
シール部のピンホール率(%)=(シール部ピンホールの発生本数/1,000本)×100
シール部のピンホール率(%) 評価記号
0.2未満 ◎
0.2以上0.5未満 ○
0.5以上1未満 △
1以上 ×
(3) Pinhole ratio (pinhole ratio of seal part)
In the evaluation of the above retort puncture, 1,000 pieces were randomly collected from the final package after retort treatment in which no bag breakage (retort puncture) occurred, and the sample was placed in a methylene blue aqueous solution (100 ppm by weight). Soaked for 1 day. Thereafter, the final package was taken out from the methylene blue aqueous solution, and the presence or absence of staining of the contents of the seal portion of the final package was visually observed (if there is a pinhole portion in the seal portion, the methylene blue aqueous solution is finally packaged from that location. The content is dyed blue because it penetrates into the body). And the number by which dyeing | staining of the content of the seal | sticker part was recognized was measured, and the pinhole rate was computed according to following Formula. The evaluation criteria are shown below.
Pinhole ratio of seal part (%) = (Number of generated sealant pinholes / 1,000) × 100
Pinhole ratio (%) of seal part Evaluation symbol Less than 0.2 ◎
0.2 or more and less than 0.5 ○
0.5 to less than 1 △
1 or more ×

(4)シール幅のばらつき(シール線の幅ばらつき)
上記のレトルトパンクの評価において、破袋(レトルトパンク)が発生しなかったレトルト処理後の最終包装体から、各々、無作為に10本採取し、最終包装体の長手方向中央部のシール線(溶融部分)の幅を、ノギスで測定(mm:小数点2桁目を四捨五入)した。測定した最終包装体10本(測定1回/1本)の最大幅と最小幅との差をシール線の幅のばらつき(mm)とし、下記の評価基準にしたがって評価した。
シール線の幅ばらつき(mm) 評価記号
1未満 ◎
1以上2未満 ○
2以上3未満 △
3以上 ×
(4) Variation in seal width (variation in seal line width)
In the evaluation of the above-mentioned retort puncture, 10 pieces were randomly sampled from the final package after retort processing in which no bag breakage (retort puncture) occurred, and a seal line ( The width of the melted part) was measured with a caliper (mm: the second decimal place was rounded off). The difference between the maximum width and the minimum width of the 10 final packaging bodies (one measurement / one measurement) was regarded as the variation (mm) in the width of the seal line, and evaluated according to the following evaluation criteria.
Seal wire width variation (mm) Evaluation symbol Less than 1 ◎
1 to less than 2 ○
2 or more and less than 3
3 or more ×

(5)シール部の平均表面粗さ(中心面平均値=Sa)
上記のレトルトパンクの評価において、破袋(レトルトパンク)が発生しなかったレトルト処理後の最終包装体から、各々、無作為に10本採取し、最終包装体の両端結紮部から略中央部分のシール部(溶融部分)について、フィルムの流れ方向に、シール線の幅方向中央部の平均表面粗さ(中心面平均値=Sa)を測定した。この測定においては、ミツトヨ(株)製、表面粗さ測定機サーフテストSV3000S4・3D<商品名>を使用し、触針(ダイヤモンド製)先端半径=2μm、測定速度(触針の移動速度)=1mm/s、圧力=0.75mN、サンプリングピッチ(X方向)=10μm、プロファイルピッチ(Y方向)=10μm、測定面積(X方向×Y方向)=10mm×0.1mmの条件下、画像解析(評価曲面の設定は「粗さ曲線群」、フィルタの種類は「GAUSSIAN」、X方向低域カットオフ値は「4,000μm」とした。)により、最終包装体10本(測定1回/1本)のシール部の平均表面粗さ(μm:中心面平均値=Sa)を求め、下記の評価基準にしたがって評価した。
シール線の平均表面粗さ(μm) 評価記号
10未満 ◎
10以上50未満 ○
50以上100未満 △
100以上 ×
(5) Average surface roughness of the seal portion (central surface average value = Sa)
In the evaluation of the above retort puncture, 10 pieces were randomly sampled from the final package after retort processing in which no bag breakage (retort puncture) occurred. About the seal | sticker part (melt | fusion part), the average surface roughness (center surface average value = Sa) of the width direction center part of the seal line was measured to the flow direction of the film. In this measurement, a surface roughness measuring machine Surf Test SV3000S4 · 3D <product name> manufactured by Mitutoyo Corporation was used, the tip radius of the stylus (made of diamond) = 2 μm, and the measurement speed (movement speed of the stylus) = Image analysis under the conditions of 1 mm / s, pressure = 0.75 mN, sampling pitch (X direction) = 10 μm, profile pitch (Y direction) = 10 μm, measurement area (X direction × Y direction) = 10 mm × 0.1 mm The evaluation curved surface is set to “roughness curve group”, the filter type is “GAUSSIAN”, and the X direction low-frequency cut-off value is “4,000 μm”). The average surface roughness (μm: average value of the center plane = Sa) of the seal portion of the book was determined and evaluated according to the following evaluation criteria.
Average surface roughness of seal wire (μm) Evaluation symbol Less than 10 ◎
10 or more and less than 50 ○
50 or more and less than 100
100 or more ×

(6)総合評価
以下の基準に基づき、総合評価を行った。
◎ ・・・ 各評価項目において、◎が合計3つ以上、且つ、×なし
○ ・・・ 各評価項目において、◎と○が合計3つ以上、且つ、×なし
△ ・・・ 各評価項目において、◎と○が合計2つ以下、且つ、×なし
× ・・・ 各評価項目において、×が1つ以上
(6) Comprehensive evaluation Comprehensive evaluation was performed based on the following criteria.
◎ ・ ・ ・ For each evaluation item, ◎ is a total of 3 or more and × None ○ ・ ・ ・ For each evaluation item, ◎ and ○ are a total of 3 or more and × None △ ・ ・ ・ For each evaluation item , ◎ and ○ are 2 or less in total, and × None × ・ ・ ・ In each evaluation item, 1 or more ×

本発明によれば、重ね合わせ部(シール部)の皺やシール部周辺の熱変形や熱収縮、ピンホールの発生が抑制され、見栄えが良く美観に優れ、寸法精度の向上が図られ、シール強度およびフィルム強度の低下が抑制され、しかも汎用性、生産性および経済性が向上されるので、食品その他の各種包装用途において、広く且つ有効に利用可能である。   According to the present invention, heat distortion and heat shrinkage around the overlapping portion (seal portion) and the periphery of the seal portion, and generation of pinholes are suppressed, the appearance is good, the appearance is excellent, and the dimensional accuracy is improved. Since the decrease in strength and film strength is suppressed, and versatility, productivity and economy are improved, it can be used widely and effectively in food and other various packaging applications.

第1実施形態の自動充填包装機100の要部構造を模式的に示す縦断面図である。It is a longitudinal cross-sectional view which shows typically the principal part structure of the automatic filling packaging machine 100 of 1st Embodiment. 第1実施形態の熱風遮蔽板61を概略的に示す斜視図である。It is a perspective view showing roughly hot air shielding board 61 of a 1st embodiment. 第1実施形態の熱風遮蔽板61の相対位置関係を模式的に示す横断面図である。It is a cross-sectional view which shows typically the relative positional relationship of the hot air shielding board 61 of 1st Embodiment. 第1実施形態の熱風遮蔽板61の変形例を概略的に示す斜視図である。It is a perspective view which shows roughly the modification of the hot air shielding board 61 of 1st Embodiment.

符号の説明Explanation of symbols

1…合成樹脂フィルム、1a,1b…両端縁、2…筒状体、2a…重ね合わせ部、3…筒状フィルム成形体、4…筒状包装体、11…フィルム供給手段、11a,11b…ローラ、12a,12b…送りローラ、21…充填手段、22…充填ノズル、23…フィードポンプ、31…製筒手段、32…製筒フォルダ、41…熱風シール手段、42…熱風印加ノズル、42a…ノズル開口、51…封止手段、52a,52b…絞りローラ、53…封止機構、61…熱風遮蔽板、61L…長さ、61W…幅、61T…厚さ、S…スリット、L…長さ、W…幅、θ…傾き、100…自動充填包装機。   DESCRIPTION OF SYMBOLS 1 ... Synthetic resin film, 1a, 1b ... Both ends edge, 2 ... Cylindrical body, 2a ... Overlapping part, 3 ... Cylindrical film molded object, 4 ... Cylindrical package, 11 ... Film supply means, 11a, 11b ... Roller, 12a, 12b ... feed roller, 21 ... filling means, 22 ... filling nozzle, 23 ... feed pump, 31 ... tube making means, 32 ... tube making folder, 41 ... hot air sealing means, 42 ... hot air applying nozzle, 42a ... Nozzle opening, 51 ... sealing means, 52a, 52b ... squeezing roller, 53 ... sealing mechanism, 61 ... hot air shielding plate, 61L ... length, 61W ... width, 61T ... thickness, S ... slit, L ... length , W ... width, θ ... tilt, 100 ... automatic filling and packaging machine.

Claims (5)

帯状の合成樹脂フィルムを筒状に湾曲させて該合成樹脂フィルムのフィルム両側縁が重ね合わせられた筒状体を形成する製筒手段と、
前記筒状体の重ね合わせ部にノズル開口から熱風を吹き付け、該重ね合わせ部を熱融着させて筒状フィルム成形体を成形する熱風シール手段と
を備え、
前記熱風シール手段と前記筒状体の重ね合わせ部との間に、スリットを有する熱風遮蔽板が設けられ、
前記ノズル開口および前記筒状体の重ね合わせ部を結ぶ直線上に、前記スリットが配置されている
ことを特徴とする、筒状フィルム成形体の製造装置。
A cylinder-forming means for forming a cylindrical body in which a belt-like synthetic resin film is curved into a cylindrical shape and the both side edges of the synthetic resin film are superimposed;
Hot air is blown from the nozzle opening to the overlapping part of the cylindrical body, and the hot air sealing means for forming the cylindrical film molded body by thermally fusing the overlapping part,
A hot air shielding plate having a slit is provided between the hot air sealing means and the overlapping portion of the cylindrical body,
The apparatus for producing a cylindrical film molded body, wherein the slit is arranged on a straight line connecting the nozzle opening and the overlapping portion of the cylindrical body.
前記熱風シール手段は、前記筒状体の断面において、前記重ね合わせ部の接線に対し略垂直方向から熱風を吹き付け可能な位置に配置され、
前記熱風遮蔽板が、前記接線に対して略平行にまたは±20°以下の傾きをもって配置されている
ことを特徴とする請求項1に記載の筒状フィルム成形体の製造装置。
The hot air sealing means is disposed at a position where hot air can be blown from a direction substantially perpendicular to the tangent to the overlapping portion in the cross section of the cylindrical body,
The apparatus for producing a cylindrical film molded body according to claim 1, wherein the hot air shielding plate is disposed substantially parallel to the tangent or with an inclination of ± 20 ° or less.
前記スリットは、前記ノズル開口から前記筒状体の重ね合わせ部へ向かって縮径している
ことを特徴とする請求項1または2に記載の筒状フィルム成形体の製造装置。
The said slit is diameter-reduced toward the overlapping part of the said cylindrical body from the said nozzle opening, The manufacturing apparatus of the cylindrical film molded object of Claim 1 or 2 characterized by the above-mentioned.
帯状の合成樹脂フィルムを供給するフィルム供給手段と、
前記合成樹脂フィルムを筒状に湾曲させて該合成樹脂フィルムのフィルム両側縁が重ね合わせられた筒状体を形成する製筒手段と、
前記筒状体の重ね合わせ部にノズル開口から熱風を吹き付け、該重ね合わせ部を熱融着させて筒状フィルム成形体を成形する熱風シール手段と、
前記筒状フィルム成形体中に被包装物を充填する充填手段と、
前記被包装物が充填された前記筒状フィルム成形体を所定の間隔で外部から押圧し、該前記押圧された領域のフィルムを封止切断して、両端部が封止された筒状包装体を複数作製する封止手段と
を備え、
前記熱風シール手段と前記筒状体の重ね合わせ部との間に、スリットを有する熱風遮蔽板が設けられ、
前記ノズル開口および前記筒状体の重ね合わせ部を結ぶ直線上に、前記スリットが配置されている
ことを特徴とする、筒状包装体の自動充填包装機。
Film supply means for supplying a strip-shaped synthetic resin film;
A cylinder-making means for forming a cylindrical body in which the synthetic resin film is curved into a cylindrical shape and the both side edges of the synthetic resin film are superimposed;
Hot air sealing means for blowing hot air from a nozzle opening to the overlapping portion of the cylindrical body, and heat-sealing the overlapping portion to form a cylindrical film molded body,
Filling means for filling a packaged article in the tubular film molded body;
The cylindrical package body in which both ends are sealed by pressing the cylindrical film molded body filled with the packaged object from outside at predetermined intervals, sealing and cutting the film in the pressed area. And a sealing means for producing a plurality of
A hot air shielding plate having a slit is provided between the hot air sealing means and the overlapping portion of the cylindrical body,
An automatic filling and packaging machine for a cylindrical packaging body, wherein the slit is arranged on a straight line connecting the nozzle opening and the overlapping portion of the cylindrical body.
帯状の合成樹脂フィルムを筒状に湾曲させて該合成樹脂フィルムのフィルム両側縁が重ね合わせられた筒状体を形成する製筒工程と、
前記筒状体の重ね合わせ部にノズル開口から熱風を吹き付け、該重ね合わせ部を熱融着させて筒状フィルム成形体を成形する熱風シール工程と、
前記筒状フィルム成形体中に被包装物を充填する充填工程と、
前記被包装物が充填された前記筒状フィルム成形体を所定の間隔で外部から押圧し、該前記押圧された領域のフィルムを封止切断して、両端部が封止された筒状包装体を複数作製する封止工程と
を有し、
前記熱風シール工程においては、前記前記ノズル開口および前記筒状体の重ね合わせ部を結ぶ直線上に配置された、熱風遮蔽板のスリットを介して、前記ノズルから前記重ね合わせ部に熱風を吹き付ける
ことを特徴とする筒状包装体の包装方法。
A cylinder-making process for forming a cylindrical body in which a belt-like synthetic resin film is curved into a cylindrical shape and the both side edges of the synthetic resin film are superimposed;
A hot air sealing step of blowing a hot air from a nozzle opening to the overlapping portion of the cylindrical body, and heat-sealing the overlapping portion to form a cylindrical film molded body,
A filling step of filling a packaged article in the tubular film molded body;
The cylindrical package body in which both ends are sealed by pressing the cylindrical film molded body filled with the packaged object from outside at predetermined intervals, sealing and cutting the film in the pressed area. And a sealing step for producing a plurality of
In the hot air sealing step, hot air is blown from the nozzle to the overlapping portion through a slit of a hot air shielding plate arranged on a straight line connecting the nozzle opening and the overlapping portion of the cylindrical body. A method of packaging a cylindrical package characterized by the above.
JP2007284543A 2007-10-31 2007-10-31 Cylindrical film molded body manufacturing apparatus, cylindrical packing body automatic filling and packaging machine, and packaging method Expired - Fee Related JP5235069B2 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108501387A (en) * 2018-05-10 2018-09-07 淄博洁林塑料制管有限公司 A kind of polybag or plastic tube heat-sealing device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55392U (en) * 1979-05-24 1980-01-05
JPH09240627A (en) * 1996-03-12 1997-09-16 Aoto Seitai Kogyo Kk Method for sealing/packaging packaging bag made of laminated film and apparatus therefor

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55392U (en) * 1979-05-24 1980-01-05
JPH09240627A (en) * 1996-03-12 1997-09-16 Aoto Seitai Kogyo Kk Method for sealing/packaging packaging bag made of laminated film and apparatus therefor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108501387A (en) * 2018-05-10 2018-09-07 淄博洁林塑料制管有限公司 A kind of polybag or plastic tube heat-sealing device
CN108501387B (en) * 2018-05-10 2024-08-06 淄博洁林塑料制管有限公司 Plastic bag or plastic pipe heat sealing device

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