JP5385110B2 - Easy-open sealed package - Google Patents

Easy-open sealed package Download PDF

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JP5385110B2
JP5385110B2 JP2009275560A JP2009275560A JP5385110B2 JP 5385110 B2 JP5385110 B2 JP 5385110B2 JP 2009275560 A JP2009275560 A JP 2009275560A JP 2009275560 A JP2009275560 A JP 2009275560A JP 5385110 B2 JP5385110 B2 JP 5385110B2
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film
package
ear piece
cylindrical
vinylidene chloride
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JP2011116408A (en
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晴典 武田
領子 平田
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Asahi Kasei Chemicals Corp
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本発明は、易開封性包装体に関する。更に詳しくは、塩化ビニリデン系樹脂フィルムを用いた筒状密封包装体の易開封性の向上を図る改良技術に関する。   The present invention relates to an easily openable package. More specifically, the present invention relates to an improved technique for improving easy-openability of a cylindrical sealed package using a vinylidene chloride resin film.

ハム、ソーセージ、チーズ、羊羹、ういろう等を収容する筒状密封包装体として、塩化ビニリデン系樹脂フィルムを使用したものが広く知られている。この筒状密封包装体は、自動充填包装機(例えば旭化成ケミカルズ(株)社製「ADP(登録商標)」)で、帯状の塩化ビニリデン系樹脂フィルムを走行させながら、両側縁部を交叉させて重なり合うように筒状に折り曲げ、その重ね合わせ部分をシールして筒状フィルムに成形し、この筒状フィルム内に内容物を充填後、上端および下端を結紮(封止)して製造される。塩化ビニリデン系樹脂フィルムは、ガスバリア性、強靭性、シール性、耐熱性、熱収縮性に優れた特性を有するため、この筒状密封包装体の包装フィルムとして汎用されている。   2. Description of the Related Art As a cylindrical sealed package that accommodates ham, sausage, cheese, sheep gourd, wax, etc., one using a vinylidene chloride resin film is widely known. This cylindrical hermetic package is made by crossing both side edges while running a belt-like vinylidene chloride resin film with an automatic filling and packaging machine (for example, “ADP (registered trademark)” manufactured by Asahi Kasei Chemicals Corporation). It is manufactured by bending into a cylindrical shape so as to overlap, sealing the overlapped portion, forming a cylindrical film, filling the contents in this cylindrical film, and then ligating (sealing) the upper and lower ends. A vinylidene chloride resin film is widely used as a packaging film for this cylindrical hermetic package because it has excellent gas barrier properties, toughness, sealing properties, heat resistance, and heat shrinkability.

しかしながら、塩化ビニリデン系樹脂フィルムで包装された筒状密封包装体は、フィルムが強靭であるため、消費者が内容物を取り出す際、鋭利な刃物等が必要であり、刃物等の用意がない場合には手指の力だけでは開封ができないという欠点を有している。そのため、塩化ビニリデン系樹脂フィルムで包装された筒状密封包装体に易開封性を付与する技術が古くから多く提案されている(例えば、特許文献1〜4参照)。   However, the cylindrical sealed package packaged with a vinylidene chloride-based resin film has a strong film, so when consumers take out the contents, a sharp blade is required, and there is no preparation of the blade Has the disadvantage that it cannot be opened only with the force of fingers. For this reason, many techniques have been proposed since long ago for imparting easy-openability to a cylindrical sealed package packaged with a vinylidene chloride resin film (see, for example, Patent Documents 1 to 4).

特許文献1には、図4に示す構成の開封用テープ付き筒状包装体が記載されている。同図に示す包装体は、筒状フィルム12の筒軸方向に線状に配されたフィルム相互の融着シール部13と、筒状フィルム12の端部を閉じる結紮部19と、筒端近傍のフィルム表面部に筒軸とほぼ直交方向に設けられた開封用テープ14a及び融着部14bとを有する。   Patent Document 1 describes a cylindrical package with an opening tape having a configuration shown in FIG. The package shown in the figure includes a fusion seal part 13 between the films arranged linearly in the cylindrical axis direction of the cylindrical film 12, a ligation part 19 that closes the end of the cylindrical film 12, and the vicinity of the cylindrical end. The film surface portion includes an opening tape 14a and a fusion bonding portion 14b provided in a direction substantially orthogonal to the cylinder axis.

特許文献2には、図5に示す構成の開封用摘み片付き筒状包装体が記載されている。同図に示す包装体は、筒状の包装体22と、融着シール部23と、包装体の長手方向の全長にわたって表面上に設けられた開封用摘み片24a及び融着部24bとを有する。   Patent Document 2 describes a tubular package with an opening tab having the configuration shown in FIG. The packaging body shown in the figure has a cylindrical packaging body 22, a fusion seal portion 23, and an opening tab 24a and a fusion portion 24b provided on the surface over the entire length in the longitudinal direction of the packaging body. .

特許文献3には、図6に示す構成の易開装性筒状密封包装体が記載されている。同図に示す包装体は、塩化ビニリデン系樹脂フィルムからなる筒32と、その筒軸に沿って延在する背貼りシール部33と、筒両端を金属環で集束した結紮部39と、背貼りシール部33を介して包装体外部に帯状にはみだしたフィルム耳片36と、包装体内部に帯状にはみだしたフィルム耳片37とを有する。フィルム耳片36のほぼ中央部にはフィルム層を貫通する微小面積の穴又は切線でなる切り目が、耳片36の長軸を横断する方向性に耳片36の長軸方向に間隔をおいて多数配列されている。   Patent Document 3 describes an easy-to-open tubular sealed package having the configuration shown in FIG. The package shown in the figure includes a cylinder 32 made of a vinylidene chloride-based resin film, a back-sticking seal portion 33 extending along the cylinder axis, a ligation portion 39 in which both ends of the cylinder are converged by metal rings, and back-sticking. A film ear piece 36 protruding in a band shape outside the package body via the seal portion 33 and a film ear piece 37 protruding in a band shape inside the package body are provided. A cut formed by a hole or a cut line having a small area penetrating through the film layer is provided at a substantially central portion of the film ear piece 36 at intervals in the long axis direction of the ear piece 36 in a direction crossing the long axis of the ear piece 36. Many are arranged.

特許文献4には、図7に示す構成の易開封性包装体が記載されている。同図に示す包装体は、内容物1と、少なくとも3箇所でシールされた状態で内容物1を覆うフィルム42と、熱融着によって形成されるシール部43とで構成される。シール部43の一側縁に沿って折り目45をもつ2枚のフィルムからなる細幅の耳片部46が包装体の外部に位置し、シール部43の他側縁に沿って2枚のフィルム端部からなる細幅の耳片部47が包装体の内部に位置する。そして、耳片部46をなす2枚のフィルムのうち1枚のフィルムのみに、耳片軸を横断する方向に小間隔をもって線状に設けられた微小面積の穴48の列が耳片軸方向に多数条設けられている。   Patent Document 4 describes an easy-open packaging body configured as shown in FIG. The package shown in the figure is composed of a content 1, a film 42 that covers the content 1 in a state of being sealed at at least three locations, and a seal portion 43 that is formed by thermal fusion. A narrow-width ear piece 46 made of two films having a fold 45 along one side edge of the seal portion 43 is located outside the package, and two films along the other side edge of the seal portion 43. A narrow ear piece 47 composed of an end is located inside the package. And, only one of the two films forming the ear piece portion 46 has a row of minute areas of holes 48 linearly provided with a small interval in a direction transverse to the ear piece axis. There are many provisions.

特開昭63−317477号公報JP 63-317477 A 実開昭63−117770号公報Japanese Utility Model Publication No. 63-117770 特開昭63−12471号公報JP-A-63-12471 特許第2838225号公報Japanese Patent No. 2838225

ところで、上記の筒状密封包装体は、例えば、ハム・ソーセージの製造の場合、充填工程、殺菌工程(ボイル、レトルト等)、搬送・選別工程、箱詰め・梱包工程などの製造過程では、難開封性が求められる。他方、消費者の開封時には易開封性が求められる。これらの相反する2つの課題の克服は、従来技術では必ずしも十分ではなかった。すなわち、従来の密封包装体は、製造時の不良率を0.1%以下にするという業界の生産性向上目標や、消費者の更なる易開封性の確度の向上期待とも相俟って、十分満足できるものではなく、未だ改善の余地があった。   By the way, the above-mentioned cylindrical sealed package is difficult to open in the manufacturing process such as filling process, sterilization process (boil, retort, etc.), transport / sorting process, boxing / packing process, etc. Sex is required. On the other hand, easy opening is required when the consumer opens. Overcoming these two conflicting problems has not always been sufficient with the prior art. In other words, the conventional hermetic package, combined with the industry productivity improvement target of reducing the defective rate at the time of production to 0.1% or less, and the improvement expectation of the accuracy of further easy opening of consumers, It was not satisfactory and there was still room for improvement.

特許文献1、2に記載の発明は、本体フィルムよりも強靭な開封用の帯状物(開封用テープや開封用摘み片)、例えば本体フィルムの厚さより厚い帯状物を、筒状密封包装体の胴の一部に融着させておき、この帯状物を引っ張ることによって本体フィルムの一部を引き破り、その部分を開封の切り口(起点)とするものである。しかし、本体フィルムと開封用の帯状物とを融着する場合、融着が過多であれば、易開封性を付与することはできるが、融着部分のフィルムの厚さが薄くなり、この部分にピンホールが発生しやすくなり、製造過程における難開封性が不十分となる場合があった。逆に融着不足であれば、難開封性を保持することはできるものの、開封時に、開封用の帯状物のみが剥がれてしまい易開封性が不十分となる場合があった。また、適正に融着されたとしても、殺菌時や移送時の筒状密封包装体同士の接触等により、開封用の帯状物が剥がれたり、その融着面にピンホールが発生したりする場合もあった。   The inventions described in Patent Documents 1 and 2 are tougher than a main body film for an opening band (opening tape or opening tab), such as a band thicker than the thickness of the main body film, A part of the main body film is torn by pulling the belt-like material, and the part is used as an opening (starting point) for opening. However, when the main body film and the band for opening are fused, if the fusion is excessive, easy opening can be imparted, but the thickness of the film at the fused portion is reduced, and this portion In some cases, pinholes are easily generated, and the difficult-to-open property in the manufacturing process is insufficient. On the contrary, if the fusion is insufficient, it is possible to maintain the difficulty of opening, but at the time of opening, only the band for opening may be peeled off and the easy opening may be insufficient. In addition, even when properly fused, when the strips for opening are peeled off due to contact between the cylindrical sealed packages at the time of sterilization or transfer, etc., or pinholes are generated on the fused surface There was also.

特許文献3に記載の発明は、筒状密封包装体の1枚のフィルム端部である細幅の耳片部に、微小傷痕群を設け、これらを開封の切り口(起点)にして、細幅の耳片部を引き裂く時の引裂応力をシール部に伝播させてこれを部分破壊して、開封部を得ようとするものである。しかし、シール部の強度に対して上記耳片部の強度が不十分な場合、開封時に耳片部が先にちぎれてしまうことがあった。開封時に耳片部がちぎれることを防止するためにシール部の強度を弱めると、包装体の製造過程においてシール部からの破袋が増加したり、破袋にまでは至らないもののシール部の部分剥離現象が発生しやすくなる。剥離部分から細菌が侵入すると包装体が膨張したり腐敗が発生する。   The invention described in Patent Document 3 is provided with a group of minute scars on a narrow ear piece that is one end of a film of a cylindrical hermetic package, and these are used as an opening (starting point) for opening. The tear stress at the time of tearing the ear piece portion is propagated to the seal portion and partially broken to obtain an opening portion. However, when the strength of the above-mentioned ear piece portion is insufficient with respect to the strength of the seal portion, the ear piece portion may be torn off at the time of opening. If the strength of the seal part is weakened to prevent the tear piece from tearing when opened, the number of broken bags from the seal part will increase in the manufacturing process of the package, or the part of the seal part will not reach the broken bag. Peeling phenomenon tends to occur. When bacteria enter from the peeled portion, the package expands or rots.

特許文献4に記載の発明は、特許文献3に記載の筒状密封包装体の耳片部を、折目をもつ2枚の耳片部にすることで、開封時に耳片部が先にちぎれてしまう問題点を解決しようとしたものである。しかし、この発明にしても、シール部を3枚のフィルムでシールするため、筒状に製袋する際のフィルム走行時の張力変動等により、シール部の幅が変わり易く、シール部の強度変動が大きくなる場合があり、シール部からの破袋等が発生することがあった。また、図7に示す構成のシール部43を採用したことで、棒状の包装体(製品)がシール部43を内側にして湾曲しやすいという問題点があった。すなわち、シール部43の対向側はフィルムが1枚であるのに対し、シール部43側は包装体内側の1枚の耳片と合わせて耳片が3枚のフィルムで構成されるため、例えばボイル殺菌やレトルト殺菌時のフィルムの加熱収縮応力により包装体が湾曲しやすい。包装体が大きく湾曲した場合、搬送中に整列機に詰まったりして外装ができなくなるという製造上の問題と、消費者に外観異形として嫌われるという問題がある。このように特許文献4に記載の発明は、難開封性及び易開封性の両立という点では優れた面を有するものの、必然的に製品が湾曲しやすいため、ハム等の太物製品の一部で試用されるに留まっているのが現状である。   In the invention described in Patent Document 4, the ear piece part of the cylindrical sealed package described in Patent Document 3 is made into two ear piece parts with folds, so that the ear piece part is torn first when opened. This is an attempt to solve the problem that occurs. However, even in the present invention, since the seal portion is sealed with three films, the width of the seal portion is easily changed due to fluctuations in tension when the film travels when making a bag into a cylindrical shape, and the strength of the seal portion varies. May become large, and bag breakage from the seal portion may occur. Further, since the seal part 43 having the configuration shown in FIG. 7 is employed, there is a problem that the rod-shaped package (product) is easily bent with the seal part 43 inside. That is, since the film on the opposite side of the seal part 43 is one sheet, the seal part 43 side is composed of three films together with one ear piece inside the package. The package tends to be bent by the heat shrinkage stress of the film during boil sterilization or retort sterilization. When the package body is greatly curved, there are problems in manufacturing that the aligner is clogged during transportation and the exterior cannot be formed, and that the consumer is disliked as an appearance variation. As described above, although the invention described in Patent Document 4 has an excellent aspect in terms of both easy-openability and easy-openability, the product is inevitably easy to bend, so a part of a thick product such as ham. The current situation is that it is only used as a trial.

また、塩化ビニリデン系樹脂フィルムを使用した包装体に対し、易開封性を付与することは、以下の通りもともと困難であるという事情がある。すなわち、塩化ビニリデン系樹脂フィルムを熱融着した場合、シール部の縁に「樹脂溜まり」が形成されやすく(図1及び図9の樹脂溜まり部D参照)、これを破壊することが難しいことに由来している。より具体的には、耳片部を引き裂く時の引裂応力をシール部に伝播させて、開封部を得ようとしても、シール部の縁の樹脂溜まりが引き裂き伝播を阻害する。樹脂溜まりは、連続接触式封筒貼りシール方式によって筒状フィルムが製造されることと、包装フィルムである塩化ビニリデン系樹脂の溶融樹脂特性との2点から、発生しやすい。つまり、塩化ビニリデン系樹脂フィルムを用いた筒状密封包装体は、本質的に難開封性を有している。   Moreover, there exists a situation that it is originally difficult to provide easy-opening property with respect to the package which uses a vinylidene chloride type-resin film as follows. That is, when the vinylidene chloride-based resin film is heat-sealed, a “resin pool” tends to be formed at the edge of the seal portion (see the resin pool portion D in FIGS. 1 and 9), and it is difficult to break this. It comes from. More specifically, even if the tear stress at the time of tearing the ear piece portion is propagated to the seal portion to obtain the opening portion, the resin pool at the edge of the seal portion inhibits tear propagation. Resin pools are likely to occur from two points: the fact that a cylindrical film is manufactured by a continuous contact type envelope-sealing method, and the molten resin characteristics of vinylidene chloride resin as a packaging film. That is, the cylindrical hermetic package using the vinylidene chloride-based resin film is essentially difficult to open.

筒状密封包装体の製造方法の一例は、例えば特開昭62−261422号公報に記載されている。製造装置の一例を図8に示す。具体的には、ボビンホルダー61から引き出された長尺フィルムFを、ガイドロール62a、62bを介してフォーミングホルダー63に送り、ここで長軸方向に沿って折り曲げ両側側縁部を重合し、その重合部分を高周波が印加されている固定電極(負電極)64と加圧電極(正電極)65との間に通して挟圧し高周波溶着し、長尺筒状体Gを形成する。次いで、このように形成された筒状体Gの中に充填ノズル67から所定の物質(例えば肉ペースト)を定量的に導入し、ボイドローラー68a、68bによって、下方へしごいて密に充填する。しごきにより生じたくびれ部分を結紮装置69で金属ワイヤー等を用いて結紮し包装することで筒状密封包装体Hが得られる。フィードロール66a、66bは長尺筒状体フィルムGの定速走行を調節するためのものである。   An example of a method for producing a cylindrical sealed package is described in, for example, Japanese Patent Application Laid-Open No. 62-261422. An example of the manufacturing apparatus is shown in FIG. Specifically, the long film F drawn out from the bobbin holder 61 is sent to the forming holder 63 through the guide rolls 62a and 62b, and is bent along the long axis direction to superpose both side edges, The superposed portion is sandwiched between a fixed electrode (negative electrode) 64 to which a high frequency is applied and a pressure electrode (positive electrode) 65 and is pressed to be high-frequency welded to form a long cylindrical body G. Next, a predetermined substance (for example, meat paste) is quantitatively introduced from the filling nozzle 67 into the cylindrical body G formed in this way, and is densely filled by squeezing downward by the void rollers 68a and 68b. . The constricted part produced by ironing is ligated using a metal wire or the like with a ligation device 69 and packaged, whereby a cylindrical sealed package H is obtained. The feed rolls 66a and 66b are for adjusting the constant speed travel of the long cylindrical film G.

この際、長尺フィルムFは加圧電極(正電極)65で押圧接触されながら連続的に封筒貼りにシールされる。このため、シール部の両縁に加圧電極(正電極)65の押圧により溶融樹脂の樹脂溜まり部Dが形成される(図9(ii)参照)。   At this time, the long film F is continuously sealed to the envelope while being pressed and contacted by the pressure electrode (positive electrode) 65. For this reason, the resin reservoir part D of a molten resin is formed by the press of the pressurization electrode (positive electrode) 65 on both edges of the seal part (see FIG. 9 (ii)).

図9(i)は、従来の塩化ビニリデン系樹脂フィルムで包装された筒状密封包装体の一例を示す平面図である。同図に示す包装体50は、塩化ビニリデン系樹脂フィルムからなる筒状フィルム52と、熱融着によって形成されたシール部53と、筒状フィルム52の両端部を封止する結紮部59と、フィルムの一方の側縁部であって筒状フィルム52の外側に帯状にはみ出したフィルム外耳片56とを有する。   FIG. 9 (i) is a plan view showing an example of a cylindrical sealed package packaged with a conventional vinylidene chloride resin film. The package 50 shown in the figure includes a cylindrical film 52 made of a vinylidene chloride resin film, a seal portion 53 formed by heat fusion, and a ligation portion 59 that seals both ends of the cylindrical film 52, It has a film outer ear piece 56 which is one side edge of the film and protrudes outside the cylindrical film 52 in a band shape.

図9(ii)は、包装体50の軸方向に垂直な方向の部分断面図である。同図に示す通り、シール部53の両側に樹脂溜まり部Dが形成される。また、フィルム外耳片56が包装体50の外側に位置し、フィルム内耳片57が包装体50の内側に位置する。   FIG. 9 (ii) is a partial cross-sectional view in a direction perpendicular to the axial direction of the package 50. As shown in the figure, resin reservoirs D are formed on both sides of the seal part 53. Further, the film outer ear piece 56 is located outside the package 50, and the film inner ear piece 57 is located inside the package 50.

塩化ビニリデン系樹脂フィルムを用いた場合に樹脂溜まり部Dが大きくなりやすい主因は、塩化ビニリデン系樹脂はポリエチレン樹脂、ポリプロピレン樹脂、ポリエステル樹脂又はポリアミド樹脂等に比べて、溶融後の再結晶化速度が遅く溶融部の結晶固化が遅いためと推察される。本来、塩化ビニリデン系樹脂フィルムはその結晶の配向性から、一旦傷が付けば、その傷を起点としての引き裂きは容易である。しかし、シール部53の縁に形成される樹脂溜まり部Dは、溶融により結晶の配向性が緩和されており、この樹脂溜まり部Dが障害になって、フィルム外耳片56からの引裂応力の伝播がシール部53まで到達しにくいので開封性が低下する。   The main reason why the resin reservoir D tends to be large when a vinylidene chloride resin film is used is that the vinylidene chloride resin has a recrystallization speed after melting as compared with polyethylene resin, polypropylene resin, polyester resin or polyamide resin. This is probably because the solidification of the melted part is slow. Originally, the vinylidene chloride resin film is easy to tear from the scratch once it is scratched because of the crystal orientation. However, the resin reservoir portion D formed at the edge of the seal portion 53 is relaxed in crystal orientation due to melting, and this resin reservoir portion D becomes an obstacle, and propagation of tearing stress from the film outer ear piece 56 occurs. However, since it is difficult to reach the seal portion 53, the unsealing property is lowered.

本発明は、かかる事情を鑑みてなされたものであり、その目的は塩化ビニリデン系樹脂フィルムを用いた密封包装体であって、製品の製造・運搬過程では破袋やピンホールの発生が十分に少ない難開封性を有し、他方、消費者が製品を利用する際には包装を容易に開封できる易開封性を有するとともに、製品の湾曲を十分に抑制できる密封包装体を提供することにある。   The present invention has been made in view of such circumstances, and its purpose is a sealed package using a vinylidene chloride-based resin film, and the occurrence of bag breakage and pinholes is sufficiently generated during the production and transportation of the product. To provide a hermetically sealed package that has a low difficulty of opening and, on the other hand, has an easy opening property that allows a consumer to easily open a package when the product is used, and that can sufficiently suppress the bending of the product. .

本発明者らは、上記課題に対し鋭意検討した結果、筒状密封包装体のシール部の特定部分に不貫通の穴または切れ目から形成されてなる傷痕群を設けることで、包装体が、製品の製造・運搬の際には破袋やピンホールの発生が十分に少ない難開封性を有し、かつ、消費者が製品を利用する際には易開封性が優れるようになることを見出し、本発明を完成するに至った。   As a result of intensive studies on the above problems, the present inventors have provided a scar group formed from non-through holes or cuts in a specific portion of the seal portion of the cylindrical sealed package, so that the package is a product. It has been found that when manufacturing and transporting products, it has a difficult-to-open property with a sufficiently low occurrence of bag breakage and pinholes, and it becomes easier to open when consumers use the product, The present invention has been completed.

すなわち、本発明は、以下(1)〜(2)を提供する。
(1)帯状の塩化ビニリデン系樹脂フィルムの両側縁部を重ね合わせ、この重ね合わせ部分を当該フィルムの長手方向にわたり所定の幅で熱融着してシール部を形成してなる筒状フィルムと、内容物が充填された上記筒状フィルムの両端部を封止する封止部材と、上記塩化ビニリデン系樹脂フィルムの一方の側縁部であって上記筒状フィルムの外側に帯状にはみ出したフィルム外耳片とを備えた密封包装体において、上記重ね合わせ部分をなす上記塩化ビニリデン系樹脂フィルムの2つの当接面の少なくとも一方は、複数の不貫通の穴または切れ目が一列に並ぶように形成されてなる傷痕群を複数列有し、上記傷痕群は上記シール部の全幅を超えて上記シール部を横切るように設けられていることを特徴とする易開封性密封包装体。
(2)上記不貫通の穴もしくは切れ目の深さは、上記フィルム外耳片の厚さの20%〜70%であることを特徴とする(1)に記載の密封包装体。
That is, the present invention provides the following (1) to (2).
(1) A cylindrical film formed by laminating both side edges of a belt-shaped vinylidene chloride-based resin film, and heat-sealing the overlapped portion with a predetermined width over the longitudinal direction of the film to form a seal portion; A sealing member that seals both ends of the tubular film filled with the contents, and a film outer ear that is one side edge of the vinylidene chloride-based resin film and protrudes outside the tubular film And at least one of the two contact surfaces of the vinylidene chloride-based resin film forming the overlapping portion is formed so that a plurality of non-through holes or cuts are arranged in a line. There are a plurality of scar groups, and the scar group is provided so as to cross the seal part beyond the full width of the seal part.
(2) The sealed package according to (1), wherein the depth of the non-penetrating hole or cut is 20% to 70% of the thickness of the film outer ear piece.

本発明の密封包装体は、製品の製造・運搬過程では破袋やピンホールの発生が十分に少ない難開封性を有するため、製品の長期保存性にも優れる。他方、消費者が製品を利用する際には包装を容易に開封できる易開封性を有する。さらに、包装体の湾曲が十分に抑制され、商品価値を高めることができる。また、そのような包装体を、簡易且つ低コストで製造することができ、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。   The sealed package of the present invention is excellent in long-term storability of the product because it has a difficult-to-open property in which the occurrence of broken bags and pinholes is sufficiently small during the production and transportation of the product. On the other hand, when the consumer uses the product, it has an easy-open property that allows the package to be easily opened. Furthermore, the curvature of the package is sufficiently suppressed, and the commercial value can be increased. Moreover, such a package can be manufactured easily and at low cost, and as a result, the yield is improved, and versatility, productivity and economy are improved.

本発明に係る易開封性密封包装体の好適な実施形態を示す模式図である。It is a schematic diagram which shows suitable embodiment of the easily openable sealing package which concerns on this invention. 本発明の易開封性密封包装体に形成する穴または切れ目の好適な例を示す模式図である。It is a schematic diagram which shows the suitable example of the hole or cut formed in the easily openable sealing package body of this invention. 本発明の易開封性密封包装体の作製に使用する塩化ビニリデン系樹脂フィルムの一例を示す模式図である。It is a schematic diagram which shows an example of the vinylidene chloride type-resin film used for preparation of the easily openable sealed package of this invention. 従来の筒状密封包装体の例を示す模式図である。It is a schematic diagram which shows the example of the conventional cylindrical sealing packaging body. 従来の筒状密封包装体の例を示す模式図である。It is a schematic diagram which shows the example of the conventional cylindrical sealing packaging body. 従来の筒状密封包装体の例を示す模式図である。It is a schematic diagram which shows the example of the conventional cylindrical sealing packaging body. 従来の筒状密封包装体の例を示す模式図である。It is a schematic diagram which shows the example of the conventional cylindrical sealing packaging body. 本発明の易開封性密封包装体の作製に使用する装置の一例を示す模式図である。It is a schematic diagram which shows an example of the apparatus used for preparation of the easily openable sealed package of this invention. (i)は従来の筒状密封包装体の一例を示す平面図であり、(ii)は従来の筒状密封包装体の軸方向に垂直な方向の部分断面図である。(I) is a top view which shows an example of the conventional cylindrical sealing packaging body, (ii) is a fragmentary sectional view of the direction perpendicular | vertical to the axial direction of the conventional cylindrical sealing packaging body.

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。   Hereinafter, embodiments of the present invention will be described 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、本発明に係る密封包装体の好適な実施形態を示す概念図である。図1(i)は包装体10の全体を示す平面図であり、図1(ii)は(i)の丸で囲った部分(包装体10のシール部3)を拡大して示す部分平面図であり、図1(iii)は包装体10の長手方向に垂直な方向のシール部3の断面図である。   FIG. 1 is a conceptual diagram showing a preferred embodiment of a sealed package according to the present invention. FIG. 1 (i) is a plan view showing the entire package body 10, and FIG. 1 (ii) is a partial plan view showing an enlarged portion (the seal portion 3 of the package body 10) surrounded by a circle in FIG. FIG. 1 (iii) is a cross-sectional view of the seal portion 3 in a direction perpendicular to the longitudinal direction of the package 10.

図1に示す包装体10は、帯状の塩化ビニリデン系樹脂フィルムの両側縁部を重ね合わせ、この重ね合わせ部分のほぼ中央部をフィルムの長手方向にわたり所定の幅で熱融着してシール部3を形成してなる筒状フィルム2と、筒状フィルムの両端部を封止する封止部材9と、筒状フィルム2の外側に帯状にはみ出したフィルム外耳片6と、筒状フィルム2の内側に帯状にはみ出したフィルム内耳片7とを備える。   The package 10 shown in FIG. 1 is formed by superimposing both side edges of a belt-shaped vinylidene chloride resin film, and heat-sealing the substantially central portion of the overlapped portion with a predetermined width in the longitudinal direction of the film. , A sealing member 9 that seals both ends of the cylindrical film, a film outer ear piece 6 that protrudes in a strip shape outside the cylindrical film 2, and an inner side of the cylindrical film 2 And a film inner ear piece 7 protruding into a band shape.

この重ね合わせ部分をなす塩化ビニリデン系樹脂フィルムの2つの当接面Fa,Fbの少なくとも一方に、シール部3の幅Aを超えてシール部3を横切るように、複数の不貫通の穴または切れ目8aが一列に並ぶように形成されてなる傷痕群8が複数列設けられている。包装体10は、不貫通の穴または切れ目8aを開封に活用するものである。   A plurality of non-penetrating holes or cuts across at least one of the two contact surfaces Fa and Fb of the vinylidene chloride-based resin film forming the overlapping portion so as to cross the seal portion 3 beyond the width A of the seal portion 3 A plurality of scar groups 8 formed so that 8a are arranged in a row are provided. The package 10 utilizes a non-penetrating hole or cut 8a for opening.

フィルム外耳片6は包装体10を開封する際の取っ手となる。すなわち、消費者が包装体10を開封するとき、このフィルム外耳片6を摘まんでシール部3を引き剥がす方向に引っ張り、シール部3を破壊して内容物1を取り出す。   The film outer ear piece 6 serves as a handle when the package 10 is opened. That is, when the consumer opens the package 10, the film outer ear piece 6 is picked and pulled in a direction in which the seal portion 3 is peeled off, the seal portion 3 is broken, and the contents 1 are taken out.

図1(iii)を参照しながら、開封原理を説明する。消費者が包装体10を開封する際、フィルム外耳片6を摘まんで引っ張れば、フィルムの当接面Fa,Fbに設けられた不貫通の穴または切れ目8aを起点としてフィルムの破壊が伝播し、その引っ張り応力の集中によりシール部3のフィルム外耳片6側の樹脂溜まり部Dが破壊され、次いでシール部3が破壊され、容易に内容物1が取り出せるのである。   The opening principle will be described with reference to FIG. When the consumer opens the package 10, if the film outer ear piece 6 is picked and pulled, the breakage of the film propagates starting from the non-penetrating holes or cuts 8a provided in the contact surfaces Fa and Fb of the film, Due to the concentration of the tensile stress, the resin reservoir portion D on the film outer ear piece 6 side of the seal portion 3 is destroyed, and then the seal portion 3 is destroyed, so that the contents 1 can be easily taken out.

ここで、シール部3に設けられる穴または切れ目8aは、密封性を保持するために、フィルム層を貫通しない穴または切れ目である必要がある。また、樹脂溜まり部Dを破壊するために、不貫通の穴または切れ目8aは、シール部3の幅Aを越えて設ける必要がある。穴または切れ目8aが幅Aを越えない場合は、引っ張り応力が樹脂溜まり部Dに分散して伝わるため樹脂溜まり部Dを破壊できず、フィルム外耳片6のみが千切れてしまう。   Here, the hole or cut 8a provided in the seal portion 3 needs to be a hole or cut that does not penetrate the film layer in order to maintain the sealing performance. Further, in order to destroy the resin reservoir D, the non-through hole or cut 8 a needs to be provided beyond the width A of the seal portion 3. If the hole or cut 8a does not exceed the width A, the tensile stress is dispersed and transmitted to the resin reservoir D, so that the resin reservoir D cannot be destroyed and only the film outer ear piece 6 is broken.

また、シール部3の幅Aを越えて設けられる不貫通の穴または切れ目8aは、重ね合わせ部分をなす外側のフィルムと内側のフィルムが接するフィルムの2つの当接面Fa,Fbのうち、少なくとも一方の当接面に設ける必要がある。包装体の外面側(非シール面)に設けた場合は、フィルム外耳片6を摘まんで引っ張り、シール部3を破壊しようとしても、不貫通の穴または切れ目8aを起点としてフィルム外耳片6のみがちぎれるため、包装体の開封ができない。さらには、筒状に製袋する際、加圧電極(正電極)が不貫通の穴または切れ目8aと接触押圧しながらシールされるため、シール部幅の変動が大きくなりやすく、各工程中での破袋や、ピンホール不良が増加する。また、包装体の内面側(非シール面)に設けた場合は、フィルム外耳片6を摘まんで引っ張っても、引っ張り応力の伝播が樹脂溜まり部Dで停止してしまうため、樹脂溜まり部Dを破壊できず、包装体の開封ができない。樹脂溜まり部Dの破壊のためには、不貫通の穴または切れ目8aは2つの当接面Fa,Fbの少なくとも一方の当接面に設ければ良いが、当接面Fa,Fbの両方に設ける方が好ましい。図1(iii)に示す包装体10は、当接面Fa,Fbの両方に傷痕群8が形成されたものである。   Further, the non-penetrating hole or cut 8a provided beyond the width A of the seal portion 3 is at least one of the two contact surfaces Fa and Fb of the film in contact with the inner film and the outer film forming the overlapping portion. It is necessary to provide one of the contact surfaces. When it is provided on the outer surface side (non-seal surface) of the package, even if the film outer ear piece 6 is picked and pulled to destroy the seal portion 3, only the film outer ear piece 6 starts from the non-penetrating hole or cut 8a. The package cannot be opened because it tears. Furthermore, when the bag is made into a cylindrical shape, the pressure electrode (positive electrode) is sealed while being pressed against the non-penetrating hole or cut 8a. Increased bag breakage and pinhole defects. Further, when the package body is provided on the inner surface side (non-seal surface), even if the film outer ear piece 6 is picked and pulled, propagation of the tensile stress stops at the resin reservoir portion D. It cannot be destroyed and the package cannot be opened. In order to destroy the resin reservoir D, the non-through hole or cut 8a may be provided on at least one of the two contact surfaces Fa and Fb, but on both contact surfaces Fa and Fb. It is preferable to provide it. The package 10 shown in FIG. 1 (iii) has a scar group 8 formed on both of the contact surfaces Fa and Fb.

不貫通の穴または切れ目8aの深さBは、筒状フィルムの外側に帯状にはみ出したフィルム外耳片6の厚さCの20%〜70%が好ましい。より好ましくは、30%〜60%である。切れ目の深さBが20%以上であれば、開封性が向上し、切れ目の深さBが70%以下であれば、シール部からの破袋が減少する。   The depth B of the non-penetrating hole or cut 8a is preferably 20% to 70% of the thickness C of the film outer ear piece 6 that protrudes in a strip shape outside the cylindrical film. More preferably, it is 30% to 60%. If the cut depth B is 20% or more, the unsealing property is improved, and if the cut depth B is 70% or less, bag breakage from the seal portion is reduced.

シール部の幅Aは0.2mm〜1.5mmが好ましい。シール部の幅Aが0.2mm以上であれば、包装体のシール部の剥離不良が減少し、シール部の幅Aが1.5mm以下であれば、樹脂溜まり部Dの成長が抑制できる。   The width A of the seal part is preferably 0.2 mm to 1.5 mm. If the width A of the seal part is 0.2 mm or more, the peeling failure of the seal part of the package is reduced, and if the width A of the seal part is 1.5 mm or less, the growth of the resin reservoir D can be suppressed.

フィルム外耳片6の幅は4mm〜12mmが好ましい。フィルム外耳片6の幅が4mm以上であれば、消費者が包装体を開封するとき、このフィルム外耳片6を摘まみやすいし、フィルム外耳片6の幅が12mm以下であれば、製品湾曲が減少する。   The width of the film outer ear piece 6 is preferably 4 mm to 12 mm. If the width of the film outer ear piece 6 is 4 mm or more, the consumer can easily pick the film outer ear piece 6 when opening the package, and if the width of the film outer ear piece 6 is 12 mm or less, the bending of the product is reduced. To do.

フィルム外耳片6の厚さCは使用する包材の厚さや加熱殺菌時の熱収縮で変化するが、30μm〜120μmが好ましい。フィルム外耳片6の厚さCが30μm以上であれば、製造過程における外部応力によるフィルム破れが減少し、フィルム外耳片6の厚さCが120μm以下であれば、フィルムの剛性由来の自動充填包装機での製袋性が低下しないため、包装体の生産性が向上する。   The thickness C of the film outer ear piece 6 varies depending on the thickness of the packaging material used and the heat shrinkage during heat sterilization, but is preferably 30 μm to 120 μm. If the thickness C of the film outer ear piece 6 is 30 μm or more, film tearing due to external stress in the manufacturing process is reduced, and if the thickness C of the film outer ear piece 6 is 120 μm or less, automatic filling packaging derived from the rigidity of the film Since the bag-making property in the machine does not deteriorate, the productivity of the package is improved.

また、フィルム外耳片6の端縁部に、引き裂き開始部を設けることが好ましい。引き裂き開始部としては、IノッチやVノッチ等が挙げられる。さらには、フィルム外耳片6に、引き裂き開始部として、小間隔をもって線状に配列させた複数列の微小面積の穴または切れ目からなる傷痕群を設けることも好ましい。これらの傷痕群は、フィルム外耳片6のフィルム層を貫通させた方が好ましいが、フィルムの破壊(切断)開始効果を期待できるならば、フィルム外耳片6のフィルム層の貫通、不貫通を問わない。   Moreover, it is preferable to provide a tear start part at the edge of the film outer ear piece 6. Examples of the tear start portion include an I notch and a V notch. Furthermore, it is also preferable to provide the film outer ear piece 6 with a scar group consisting of a plurality of rows of minute area holes or cuts arranged in a line at small intervals as a tear start portion. These scars are preferably penetrated through the film layer of the film outer ear piece 6. However, if a film breaking (cutting) initiation effect can be expected, the film layer of the film outer ear piece 6 may be penetrated or not penetrated. Absent.

図2(i)(ii)は、穴または切れ目8aの好適な例をそれぞれ示す図である。穴または切れ目8aは、フィルム層を貫通せず、包装体10の長軸を横断する方向にほぼ一定の間隔bをもって一列に並ぶように形成されて傷痕群8をなし、かつ、この傷痕群8が包装体の長軸方向にほぼ一定の間隔cをおいて複数列配列される。穴または切れ目8aは、面積が0.003mm〜0.2mm、包装体10の長軸方向に垂直な方向の長さ(図2中の長さa)が0.1mm〜1.5mm、傷痕群8における間隔(図2中の間隔b)が0.1mm〜1mm、傷痕群8の間隔(図2中の間隔c)が0.5mm〜2mm、包装体10の長軸方向の幅(図2中の幅d)が0.005mm〜0.5mmとなるように形成することが好ましい。 FIGS. 2 (i) and (ii) are diagrams showing suitable examples of holes or cuts 8a, respectively. The holes or cuts 8a are formed so as not to penetrate the film layer and to be arranged in a line at a substantially constant interval b in the direction crossing the long axis of the package 10, and form the scar group 8. Are arranged in a plurality of rows at substantially constant intervals c in the longitudinal direction of the package. The hole or cut 8a has an area of 0.003 mm 2 to 0.2 mm 2 , a length perpendicular to the major axis direction of the package 10 (length a in FIG. 2) is 0.1 mm to 1.5 mm, The interval in the scar group 8 (interval b in FIG. 2) is 0.1 mm to 1 mm, the interval in the scar group 8 (interval c in FIG. 2) is 0.5 mm to 2 mm, and the width in the major axis direction of the package 10 ( The width d) in FIG. 2 is preferably formed to be 0.005 mm to 0.5 mm.

穴または切れ目8aの面積は、フィルムの引き裂き強度に関わり、また個々の穴または切れ目8aの間隔(図2中の間隔b及び間隔c)は、引き裂き伝播強度に関わる。従って、穴または切れ目8aの面積や間隔は、フィルムの機械的強度が、包装体10を製造する工程においては必要限度の範囲内で保持されるように、かつ、消費者が開封する時には、開封の起点となる局部小範囲で弱められた状態になるように調整される。なお、図2に示すように、穴または切れ目8aの長さaは、幅dよりも長いことが好ましい。穴または切れ目8aの長さaを幅dよりも長くすることで、フィルムを引き裂く力によって樹脂溜まり部Dを破壊しやすく、易開封性がより一層向上する。   The area of the hole or cut 8a is related to the tear strength of the film, and the distance between the individual holes or cuts 8a (the distance b and the distance c in FIG. 2) is related to the tear propagation strength. Therefore, the area or interval of the holes or cuts 8a is determined so that the mechanical strength of the film is maintained within the necessary limit in the process of manufacturing the package 10 and when the consumer opens the package. It is adjusted so as to be weakened in a small local range that is the starting point. In addition, as shown in FIG. 2, it is preferable that the length a of the hole or cut 8a is longer than the width d. By making the length a of the hole or cut 8a longer than the width d, the resin reservoir portion D is easily broken by the force of tearing the film, and the easy-openability is further improved.

フィルムに不貫通の穴または切れ目を付与する方法としては、例えば特開平6−8966号公報に開示された穿孔装置を使用した方法、すなわち上縁端が鋭い微細な刃物を円盤の円周上に複数列千鳥状に配列加工したものを用いる方法、あるいは、50μm〜100μm程度の粒径の鋭い角を有する合成ダイヤモンドのような硬い粒子を円盤の円周上に電着したものや、サンドペーパーを円盤の円周上に貼り付けたもの等で押圧する方法、切れ刃を有するロール(ロータリーダイロール)等を用いる方法などが挙げられる。不貫通の穴または切れ目8aは、少なくとも塩化ビニリデン系樹脂フィルムが筒状に成形される前に付与されるのが望ましい。   As a method of giving a non-through hole or cut to the film, for example, a method using a perforating apparatus disclosed in Japanese Patent Laid-Open No. 6-8966, that is, a fine blade with a sharp upper edge is placed on the circumference of the disk. A method using a multi-row staggered array, or a method in which hard particles such as synthetic diamond having a sharp angle with a particle diameter of about 50 μm to 100 μm are electrodeposited on the circumference of a disk, or sandpaper Examples thereof include a method of pressing with a material pasted on the circumference of a disk, a method of using a roll having a cutting edge (rotary die roll), and the like. The non-penetrating hole or cut 8a is desirably provided at least before the vinylidene chloride resin film is formed into a cylindrical shape.

不貫通の穴または切れ目8aを有するフィルムは、例えば、それぞれ特定の厚さを有する2枚のフィルムに貫通する穴または切れ目を設け、これら2枚のフィルムを一方のフィルムで他方の穴または切れ目を塞いで不貫通となるようにフィルム面を組み替えて貼り合わせて作製してもよい。この場合、所定の厚さのフィルムを2枚選択して使用することで、不貫通の穴または切れ目8aの深さを調節することができる。   The film having non-penetrating holes or cuts 8a is, for example, provided with holes or cuts penetrating through two films each having a specific thickness, and these two films are connected to one film with the other hole or cut. The film surfaces may be rearranged and pasted together so as to block and not penetrate. In this case, the depth of the non-penetrating hole or cut 8a can be adjusted by selecting and using two films having a predetermined thickness.

図3(i)は不貫通の傷痕群8が形成されており、包装体10の作製に使用される塩化ビニリデン系樹脂フィルムの巻物2Aを示す斜視図であり、図3(ii)は図3(i)に示すII−II線断面図である。図3(ii)に示すように当接面Fa,Fbに傷痕群8がそれぞれ設けられている。図3(iii)のフィルム巻物2Aを使用して包装体10を製造する際は、傷痕群8がそれぞれ形成された当接面Fa,Fbが接するようにフィルムを曲げた後、重ね合わせ部分を熱融着して製袋される。   FIG. 3 (i) is a perspective view showing a roll 2A of vinylidene chloride-based resin film used for producing the package 10 in which a non-penetrating scar group 8 is formed, and FIG. 3 (ii) is FIG. It is the II-II sectional view taken on the line shown to (i). As shown in FIG. 3 (ii), scar groups 8 are provided on the contact surfaces Fa and Fb, respectively. When manufacturing the package 10 using the film roll 2A of FIG. 3 (iii), after bending the film so that the contact surfaces Fa and Fb on which the scar groups 8 are respectively formed are in contact with each other, The bag is made by heat sealing.

以下、実施例により本発明を詳細に説明するが、本発明はこれらの実施例のみに限定されるものでない。   EXAMPLES Hereinafter, although an Example demonstrates this invention in detail, this invention is not limited only to these Examples.

各種性能の測定方法および評価方法を、以下に示す。
(1)フィルム外耳片の厚さ(μm)及び傷痕の深さ(μm)
ミクロトームでシール部の断面の切片を作製し、光学顕微鏡にて150倍にして写真を撮影し、同倍率に拡大したスケールにて、シール部近傍のフィルム外耳片の厚さと不貫通の傷痕(穴または切れ目)の深さとを、密封包装体の長軸方向にほぼ等間隔で10点測定した。測定値の平均値をフィルム外耳片の厚さC及び傷痕の深さBとした。
Measurement methods and evaluation methods for various performances are shown below.
(1) Film outer ear piece thickness (μm) and scar depth (μm)
A section of the cross section of the seal part is prepared with a microtome, a photograph is taken with an optical microscope at a magnification of 150, and the scale of the film outer ear piece near the seal part and a non-penetrating scar (hole) are enlarged at the same magnification. Or, the depth of the cuts) was measured at 10 points at almost equal intervals in the long axis direction of the sealed package. The average value of the measured values was defined as the thickness C of the film outer ear piece and the depth B of the scar.

(2)レトルトパンク率(%:加圧加熱殺菌後のシール部の破袋率)
自動充填包装機(旭化成ケミカルズ(株)社製「ADP(登録商標)」)を使用し、次のようにして密封包装体を作製した。まず、フィルム幅92mm(比較例4のフィルム幅のみ108mm幅)のフィルムを筒状に製袋し、重ね合わせ部を16mm(外耳片幅8mm+内耳片幅8mm)に設定し、重ね合わせ部の中央にシール部の幅が0.5〜1.0mmになるよう加圧電極(正電極)をフィルムに押圧接触させながら高周波にて熱融着し、筒状フィルムに形成した。筒状フィルムの内部に魚肉ソーセージ用すり身を充填し、両端をアルミニウム鋼線でクリップ(封止)し、240本/分の充填条件で、結紮間の長さを195mmに設定して5000本の包装体を作製した。得られた5000本の包装体について、加熱缶内ゲージ圧が0.20MPaの条件下で、120℃20分のレトルト処理を行い、得られた最終包装体において、シール部が破袋した本数を数えて、次式によりレトルトパンク率(破袋率)を算出し、以下の基準に従って評価した。
レトルトパンク率(%)=(破袋本数/5000本)×100

Figure 0005385110
(2) Retort puncture rate (%: rate of bag breakage of the seal part after pressure heat sterilization)
Using an automatic filling and packaging machine (“ADP (registered trademark)” manufactured by Asahi Kasei Chemicals Corporation), a sealed package was produced as follows. First, a film having a film width of 92 mm (only the film width of Comparative Example 4 is 108 mm wide) is formed into a cylindrical shape, the overlapping portion is set to 16 mm (outer ear piece width 8 mm + inner ear piece width 8 mm), and the center of the overlapping portion is set. The pressure electrode (positive electrode) was heat-sealed at a high frequency while being pressed against the film so that the width of the seal portion was 0.5 to 1.0 mm, and formed into a cylindrical film. Fish sausage surimi is filled into the tubular film, both ends are clipped (sealed) with aluminum steel wire, and the length between ligatures is set to 195 mm under a filling condition of 240 pieces / min. A package was produced. About the obtained 5000 packages, the retort treatment at 120 ° C. for 20 minutes was performed under the condition that the gauge pressure in the heated can was 0.20 MPa, and the number of the sealed portions in the obtained final package was determined. Counting, the retort puncture rate (bag breaking rate) was calculated by the following formula, and evaluated according to the following criteria.
Retort puncture rate (%) = (Number of broken bags / 5000) × 100
Figure 0005385110

(3)シール部の幅のばらつき(mm)
レトルト処理後の500本[破袋(パンク)が発生しなかったものから無作為にサンプリング]の包装体の長軸方向の中央部(クリップ間の中間位置)のシール部の幅を、ノギスで測定(単位:mm、小数点第2位を四捨五入)した。測定した包装体500本(測定1回/1本)の最大幅と最小幅との差を、シール部の幅のばらつき(mm)とし、以下の基準に従って評価した。

Figure 0005385110
(3) Variation in width of seal part (mm)
The width of the seal part of the central part (intermediate position between clips) of the package body of 500 [random sampling from the case where no puncture (puncture) did not occur] after the retort treatment, with calipers Measurement (unit: mm, rounded to the first decimal place). The difference between the maximum width and the minimum width of 500 measured packages (one measurement / one measurement) was regarded as the variation (mm) in the width of the seal portion, and evaluated according to the following criteria.
Figure 0005385110

(4)ピンホール発生率(%:シール部のピンホール発生率)
レトルト処理後の500本[破袋(パンク)が発生しなかったものから無作為にサンプリング]の包装体について、絶縁抵抗を測定した。絶縁抵抗の測定は、メガテスター(商品名:絶縁抵抗計 BN−500UB (松下電器産業社製)、電圧:500V)および飽和食塩水を用いて、以下の手順で行った。まず、レトルト処理後の包装体の胴体中央部のシール部に触れないように、メガテスターのマイナス電極を飽和食塩水に漬けた。次に、マイナス電極を差した包装体を、クリップ部から胴体中央部まで浸漬させた。その後、包装体を反転させて、反対側のクリップ部から胴体中央部まで浸漬させ、このときのメガテスターの抵抗値(ピンホールが存在すれば、絶縁抵抗が500KΩ未満となる)を測定し、500KΩ未満を計測した本数を数えて、次式によりピンホール発生率を算出し、以下の基準に従って評価した。
ピンホール発生率(%)=(シール部ピンホールの発生本数/500本)×100

Figure 0005385110
(4) Pinhole generation rate (%: Pinhole generation rate of seal part)
Insulation resistance was measured for 500 packages [randomly sampled from those in which no puncture occurred] after the retort treatment. The insulation resistance was measured using a mega tester (trade name: insulation resistance meter BN-500UB (manufactured by Matsushita Electric Industrial Co., Ltd.), voltage: 500 V) and saturated saline in the following procedure. First, the negative electrode of the mega tester was immersed in saturated saline so as not to touch the seal part at the center of the trunk of the package after retorting. Next, the packaging body in which the negative electrode was inserted was immersed from the clip part to the body center part. Then, the package is inverted and immersed from the clip part on the opposite side to the middle part of the trunk, and the resistance value of the mega tester at this time (if there is a pinhole, the insulation resistance is less than 500 KΩ), The number of pinholes measured below 500 KΩ was counted, the pinhole occurrence rate was calculated by the following formula, and evaluated according to the following criteria.
Pinhole generation rate (%) = (Number of seal pinholes generated / 500) × 100
Figure 0005385110

(5)搬送・取り扱い適性(%:過酷処理後のシール部のピンホール発生率)
レトルト処理後の500本[破袋(パンク)が発生しなかったものから無作為にサンプリング]の包装体について、23℃50%RHの恒温室内で24時間保管後、ダンボールで内張りした1辺1mの六角形の断面の回転ドラムに入れ、100回転させて取り出し、上記(4)ピンホール発生率の評価方法で評価した。
ピンホール発生率(%)=(シール部ピンホールの発生本数/500本)×100

Figure 0005385110
(5) Conveyance and handling suitability (%: Pinhole occurrence rate of the seal part after severe processing)
About 500 pieces of packaging after retort processing [random sampling from the case where puncture did not occur], stored in a constant temperature room at 23 ° C. and 50% RH for 24 hours, and then 1 m on each side lined with cardboard The sample was put in a rotating drum having a hexagonal cross section, rotated 100 times and taken out, and evaluated by the above (4) pinhole generation rate evaluation method.
Pinhole generation rate (%) = (Number of seal pinholes generated / 500) × 100
Figure 0005385110

(6)使用時非開封品の発生率(%)
レトルト処理後の500本[破袋(パンク)が発生しなかったものから無作為にサンプリング]の包装体について、胴体中央部のフィルム外耳片を指でつまんで、引っ張って開封し、開封出来なかった本数を数えて、次式により非開封品の発生率を算出し、以下の基準に従って評価した。
使用時非開封品の発生率(%)=(開封出来なかった本数/500本)×100

Figure 0005385110
(6) Occurrence rate of unopened products during use (%)
About 500 retort-packed packages [sampled randomly from those without punctures], the film outer ear piece in the middle of the fuselage is pinched with a finger, pulled to open, and cannot be opened The occurrence rate of unopened products was calculated by the following formula and evaluated according to the following criteria.
Incidence rate of unopened products during use (%) = (number of unopened products / 500) × 100
Figure 0005385110

(7)湾曲製品の発生率(%)
レトルト処理後の500本[破袋(パンク)が発生しなかったものから無作為にサンプリング]の包装体について、包装体を方眼紙の線上に並べ、包装体の両端部と胴体中央部の隙間が5mm以上あるものの本数を数えて、次式により湾曲製品の発生率を算出し、以下の基準に従って評価した。
湾曲製品の発生率(%)=(隙間が5mm以上の本数/500)×100

Figure 0005385110
(7) Incidence of curved products (%)
For 500 packages [random sampling from those without puncture] after retorting, arrange the packages on a graph paper line, and the gap between the ends of the package and the center of the fuselage Was counted 5 mm or more, the incidence rate of the curved product was calculated by the following formula, and evaluated according to the following criteria.
Occurrence rate of curved product (%) = (Number of gaps of 5 mm or more / 500) × 100
Figure 0005385110

(8)保存性
レトルト処理後の500本[破袋(パンク)が発生しなかったものから無作為にサンプリング]の包装体を37℃、90%RHの温度湿度条件下で1ケ月間保存し、包装体の膨張の発生の有無を、目視により、以下の基準にしたがって評価した。

Figure 0005385110
(8) Preservability Package after 500 retorts [random sampling from those without puncture] stored for 37 months at 37 ° C and 90% RH. The presence or absence of occurrence of expansion of the package was visually evaluated according to the following criteria.
Figure 0005385110

[実施例1]
実施例1で使用する塩化ビニリデン系樹脂フィルムを以下の手順で作製した。サラン(登録商標)ロールフィルム[商品名;旭化成ケミカルズ(株)製、塩化ビニリデン系樹脂フィルム、幅600mm、厚さ0.02mm、巻長1500m、シングルプライフィルム]を2本準備した。2本のサランロールフィルムについて、フィルムの片側縁部より78mm、170mm、262mm、354mm、446mmの位置をそれぞれの中心とする5ヶ所に、図2(ii)と同様の、フィルム層を貫通する5個(3個−2個−3個−2個−・・・の千鳥状に配置)の切れ目を、フィルムの長軸方向に線状にいれた。図2(ii)に示す長さa、間隔b、間隔c及び幅dは、それぞれ0.7mm、0.5mm、1mm及び0.02mmであった。切れ目の面積は0.01mmであった。
[Example 1]
A vinylidene chloride resin film used in Example 1 was prepared by the following procedure. Two Saran (registered trademark) roll films [trade name; manufactured by Asahi Kasei Chemicals Corporation, vinylidene chloride resin film, width 600 mm, thickness 0.02 mm, winding length 1500 m, single ply film] were prepared. About two saran roll films, it penetrates the film layer similar to FIG. 2 (ii) in five places centering on the positions of 78 mm, 170 mm, 262 mm, 354 mm, and 446 mm from the edge of one side of the film. Pieces (three, two, three, two, ... arranged in a staggered pattern) were linearly formed in the long axis direction of the film. The length a, the interval b, the interval c, and the width d shown in FIG. 2 (ii) were 0.7 mm, 0.5 mm, 1 mm, and 0.02 mm, respectively. The area of the cut was 0.01 mm 2 .

次いで、貫通した5列の切れ目群を設けた2本の厚さ0.02mmのサランロールフィルムを、それぞれのフィルムでそれぞれの切れ目群を塞いで図3(iii)に示すように切れ目が不貫通になるようにフィルム面を組み替えて、ドライラミネーターで接着剤を使って貼り合わせた。これをロール状に巻き取り、合計フィルム厚さが0.04mmの、10列の不貫通の切れ目群が設けられた塩化ビニリデン系樹脂フィルムに加工した。次いでスリッターで、5行の92mm幅製品の全てが、92mm幅のフィルムの両側縁部からそれぞれ8mmのところに、不貫通の切れ目群が配置(両側で2列)されるように、原反の両端部(トリム屑)を取り除いてスリットして、幅92mm、厚さ0.04mm、長さ1200mの5巻の塩化ビニリデン系樹脂フィルムを得た。   Next, two saran roll films having a thickness of two rows of 0.02 mm provided with five rows of cut groups are closed, and each cut group is closed with each film, as shown in FIG. The film surfaces were rearranged so as to be, and bonded using an adhesive with a dry laminator. This was wound up into a roll shape and processed into a vinylidene chloride-based resin film having a total film thickness of 0.04 mm and provided with 10 rows of non-penetrating cut groups. Next, in the slitter, all of the 92 mm wide products in 5 rows were placed 8 mm from the side edges of the 92 mm wide film, respectively, so that non-penetrating cuts were placed (2 rows on both sides). Both ends (trim waste) were removed and slitted to obtain 5 volumes of vinylidene chloride resin film having a width of 92 mm, a thickness of 0.04 mm, and a length of 1200 m.

このうちの1巻を用いて、自動充填包装機(旭化成ケミカルズ(株)社製「ADP」)を使用し、次のようにして密封包装体を作製した。まず、シール面の両面に不貫通の切れ目群がくるようにセットして、フィルムを筒状に製袋し、重ね合わせ部分を16mm(外耳片幅8mm+内耳片幅8mm)に設定し、重ね合わせ部分の中央に加圧電極(正電極)をあてて、フィルムに押圧接触させながら高周波にて熱融着し、筒状フィルムに形成した。筒状フィルムの内部に魚肉ソーセージ用すり身を充填し、両端をアルミニゥム鋼線でクリップ(封止)し、240本/分の充填条件で、結紮クリップ間の長さを195mmに設定して、実施例1の筒状密封包装体(魚肉ソーセージ包装体)を得た。表8に各種性能評価の評価結果を示す。   Using one of these volumes, an automatic filling and packaging machine (“ADP” manufactured by Asahi Kasei Chemicals Corporation) was used to produce a sealed package as follows. First, set the seal surface so that there are non-penetrating cuts, make the film into a cylindrical shape, and set the overlapping part to 16 mm (outer ear piece width 8 mm + inner ear piece width 8 mm). A pressure electrode (positive electrode) was applied to the center of the portion, and heat-sealed at a high frequency while being pressed against the film to form a cylindrical film. Fill the inside of the tubular film with surimi for fish sausage, clip (seal) both ends with aluminum steel wire, and set the length between ligation clips to 195 mm under the filling condition of 240 pieces / min. The cylindrical sealed package of Example 1 (fish sausage package) was obtained. Table 8 shows the evaluation results of various performance evaluations.

[実施例2]
1本のサランロールフィルムには切れ目を設けないこと以外は、実施例1と同様に処理して92mm幅のフィルム5巻を得た。このうちの1巻を用いて、自動充填包装機(旭化成ケミカルズ(株)社製「ADP」)で、フィルム外耳片側の当接面(シール面)に不貫通の切れ目群がくるようにセットして、実施例2の筒状密封包装体(魚肉ソーセージ包装体)を得た。表8に各種性能評価の評価結果を示す。
[Example 2]
A single saran roll film was processed in the same manner as in Example 1 except that no cut was provided, and five rolls of 92 mm wide film were obtained. Using one of these rolls, set it with an automatic filling and packaging machine ("ADP" manufactured by Asahi Kasei Chemicals Co., Ltd.) so that the non-penetrating cuts are on the contact surface (seal surface) on one side of the film outer ear. Thus, a cylindrical sealed package (fish sausage package) of Example 2 was obtained. Table 8 shows the evaluation results of various performance evaluations.

[実施例3]
実施例2で得た92mm幅のフィルムの1巻を用いて、自動充填包装機(旭化成ケミカルズ(株)社製「ADP」)で、フィルム内耳片側の当接面(シール面)に不貫通の切れ目群がくるようにセットして、実施例3の筒状密封包装体(魚肉ソーセージ包装体)を得た。表8に各種性能評価の評価結果を示す。
[Example 3]
Using one roll of the 92 mm wide film obtained in Example 2, it was not penetrated into the contact surface (seal surface) on one side of the film inner ear by an automatic filling and packaging machine ("ADP" manufactured by Asahi Kasei Chemicals Corporation). The cylindrical sealed package (fish sausage package) of Example 3 was obtained by setting the cuts so as to come. Table 8 shows the evaluation results of various performance evaluations.

[実施例4]
厚さ0.02mmのサランロールフィルム2本使用する代わりに、厚さ0.012mmのサランロールフィルム及び厚さ0.028mmのサランロールフィルムを使用し、厚さ0.028mmのサランロールフィルムには切れ目を設けないこと以外は、実施例2と同様に処理して92mm幅のフィルム5巻を得た。このうちの1巻を用いて、自動充填包装機(旭化成ケミカルズ(株)社製「ADP」)で、フィルム外耳片側の当接面(シール面)に不貫通の傷痕群がくるようにセットして、実施例4の筒状密封包装体(魚肉ソーセージ包装体)を得た。表8に各種性能評価の評価結果を示す。
[Example 4]
Instead of using two 0.02 mm thick saran roll films, a 0.012 mm thick saran roll film and a 0.028 mm thick saran roll film are used. The film was treated in the same manner as in Example 2 except that no cut was provided, and 5 rolls of 92 mm wide film were obtained. Using one of these rolls, set it with an automatic filling and packaging machine ("ADP" manufactured by Asahi Kasei Chemicals Corporation) so that there are non-penetrating scars on the contact surface (seal surface) on one side of the film outer ear. Thus, a cylindrical sealed package (fish sausage package) of Example 4 was obtained. Table 8 shows the evaluation results of various performance evaluations.

[実施例5]
厚さ0.012mmのサランロールフィルムには切れ目を設けないこと以外は、実施例4と同様に処理して92mm幅のフィルム5巻を得た。このうちの1巻を用いて、自動充填包装機(旭化成ケミカルズ(株)社製「ADP」)で、フィルム外耳片側の当接面(シール面)に不貫通の傷痕群がくるようにセットして、実施例5の筒状密封包装体(魚肉ソーセージ包装体)を得た。表8に各種性能評価の評価結果を示す。
[Example 5]
The film was treated in the same manner as in Example 4 except that no cut was formed in the 0.012 mm thick saran roll film to obtain 5 films of 92 mm width. Using one of these rolls, set it with an automatic filling and packaging machine ("ADP" manufactured by Asahi Kasei Chemicals Corporation) so that there are non-penetrating scars on the contact surface (seal surface) on one side of the film outer ear. Thus, a cylindrical sealed package (fish sausage package) of Example 5 was obtained. Table 8 shows the evaluation results of various performance evaluations.

[実施例6]
厚さ0.02mmのサランロールフィルム2本使用する代わりに、厚さ0.008mmのサランロールフィルム及び厚さ0.032mmのサランロールフィルムを使用し、厚さ0.032mmのサランロールフィルムには切れ目を設けないこと以外は、実施例2と同様に処理して92mm幅のフィルム5巻を得た。このうちの1巻を用いて、自動充填包装機(旭化成ケミカルズ(株)社製「ADP」)で、フィルム外耳片側の当接面(シール面)に不貫通の傷痕群がくるようにセットして、実施例6の筒状密封包装体(魚肉ソーセージ包装体)を得た。表8に各種性能評価の評価結果を示す。
[Example 6]
Instead of using two 0.02 mm thick saran roll films, a 0.008 mm thick saran roll film and a 0.032 mm thick saran roll film are used. The film was treated in the same manner as in Example 2 except that no cut was provided, and 5 rolls of 92 mm wide film were obtained. Using one of these rolls, set it with an automatic filling and packaging machine ("ADP" manufactured by Asahi Kasei Chemicals Corporation) so that there are non-penetrating scars on the contact surface (seal surface) on one side of the film outer ear. Thus, a cylindrical sealed package (fish sausage package) of Example 6 was obtained. Table 8 shows the evaluation results of various performance evaluations.

[実施例7]
厚さ0.02mmのサランロールフィルム2本使用する代わりに、厚さ0.024mmのサランロールフィルム及び厚さ0.016mmのサランロールフィルムを使用し、厚さ0.016mmのサランロールフィルムには切れ目を設けないこと以外は、実施例2と同様に処理して92mm幅のフィルム5巻を得た。このうちの1巻を用いて、自動充填包装機(旭化成ケミカルズ(株)社製「ADP」)で、フィルム外耳片側の当接面(シール面)に不貫通の傷痕群がくるようにセットして、実施例7の筒状密封包装体(魚肉ソーセージ包装体)を得た。表8に各種性能評価の評価結果を示す。
[Example 7]
Instead of using two Saran roll films with a thickness of 0.02 mm, a Saran roll film with a thickness of 0.024 mm and a Saran roll film with a thickness of 0.016 mm are used. The film was treated in the same manner as in Example 2 except that no cut was provided, and 5 rolls of 92 mm wide film were obtained. Using one of these rolls, set it with an automatic filling and packaging machine ("ADP" manufactured by Asahi Kasei Chemicals Corporation) so that there are non-penetrating scars on the contact surface (seal surface) on one side of the film outer ear. Thus, a cylindrical sealed package (fish sausage package) of Example 7 was obtained. Table 8 shows the evaluation results of various performance evaluations.

[比較例1]
実施例2で得た92mm幅のフィルムの1巻を用いて、自動充填包装機(旭化成ケミカルズ(株)社製「ADP」)で、フィルム外耳片側の非シール面に不貫通の傷痕群がくるようにセットして、比較例1の筒状密封包装体(魚肉ソーセージ包装体)を得た。表9に各種性能評価の評価結果を示す。
[Comparative Example 1]
Using one roll of the 92 mm wide film obtained in Example 2, an unfilled scar group appears on the non-sealed surface on one side of the film outer ear with an automatic filling and packaging machine ("ADP" manufactured by Asahi Kasei Chemicals Corporation). Thus, a cylindrical sealed package (fish sausage package) of Comparative Example 1 was obtained. Table 9 shows the evaluation results of various performance evaluations.

[比較例2]
実施例2で得た92mm幅のフィルムの1巻を用いて、自動充填包装機(旭化成ケミカルズ(株)社製「ADP」)で、フィルム内耳片側の非シール面に不貫通の切れ目群がくるようにセットして、比較例2の筒状密封包装体(魚肉ソーセージ包装体)を得た。表9に各種性能評価の評価結果を示す。
[Comparative Example 2]
Using one roll of 92 mm wide film obtained in Example 2, an unfilled cut group comes to the non-sealing surface on one side of the inner ear of the film with an automatic filling and packaging machine ("ADP" manufactured by Asahi Kasei Chemicals Corporation). Thus, a cylindrical sealed package (fish sausage package) of Comparative Example 2 was obtained. Table 9 shows the evaluation results of various performance evaluations.

[比較例3]
比較例3で使用する塩化ビニリデン系樹脂フィルムを以下の手順で作成した。サランロールフィルム[商品名;旭化成ケミカルズ(株)製、塩化ビニリデン系樹脂フィルム、幅600mm、厚さ0.04mm(厚さ0.02mmのダブルプライフィルム)、巻長1500m]を準備し、片側縁部より72mm、164mm、256mm、348mm、440mmの位置をそれぞれの中心とする5ヶ所に、フィルム層を貫通する実施例1と同様の5個の切れ目(3個−2個−3個−2個−・・・の千鳥状に配置)を入れて、5行の92mm幅製品の全てが、92mmm幅のフィルムの片側縁部から2mmのところに、フィルム層を貫通した切れ目群が配置(一方側のみで1列)されるように、原反の両側縁部(トリム屑)を取り除いてスリットして、幅92mm、厚さ0.04mm、長さ1200mの5巻の塩化ビニリデン系樹脂フィルムを得た。
[Comparative Example 3]
A vinylidene chloride resin film used in Comparative Example 3 was prepared by the following procedure. A saran roll film [trade name; manufactured by Asahi Kasei Chemicals Corporation, vinylidene chloride resin film, width 600 mm, thickness 0.04 mm (double ply film with a thickness of 0.02 mm), winding length 1500 m], prepared on one side edge 5 cuts (3-2, -3, -2) as in Example 1 that penetrate through the film layer at five locations centered at 72 mm, 164 mm, 256 mm, 348 mm, and 440 mm from the center. -... in a zigzag pattern), and all of the 5 rows of 92mm width products are placed 2mm from the edge of one side of the 92mm width film, with a group of cuts penetrating the film layer (one side) 5 rows of vinyl chloride having a width of 92 mm, a thickness of 0.04 mm, and a length of 1200 m, as shown in FIG. To obtain a system resin film.

このうちの1巻を用いて、自動充填包装機(旭化成ケミカルズ(株)社製「ADP」)を使用し、次のようにして密封包装体を作製した。まず、フィルム層を貫通した切れ目群が、包装体の外側の重ね合わせ部分(フィルム外耳片)になるようにセットして、フィルムを筒状に製袋し、重ね合わせ部分を16mm(外耳片幅8mm+内耳片幅8mm)に設定し、重ね合わせ部分の中央に加圧電極(正電極)をあてて、フィルムに押圧接触させながら高周波にて熱融着し、筒状フィルムに形成した。筒状フィルムの内部に魚肉ソーセージ用すり身を充填し、両端をアルミニゥム鋼線でクリップ(封止)し、240本/分の充填条件で、結紮クリップ間の長さを195mmに設定して、比較例3の筒状密封包装体(魚肉ソーセージ包装体:特開昭63−12471号公報の再現品)を得た(図6参照)。表9に各種性能評価の評価結果を示す。   Using one of these volumes, an automatic filling and packaging machine (“ADP” manufactured by Asahi Kasei Chemicals Corporation) was used to produce a sealed package as follows. First, the cut group that penetrates the film layer is set so as to be an overlapped portion (film outer ear piece) on the outside of the package, and the film is formed into a cylindrical shape, and the overlapped portion is 16 mm (outer ear piece width). 8 mm + inner ear piece width 8 mm), a pressure electrode (positive electrode) was applied to the center of the overlapped portion, and the film was heat-sealed at high frequency while being pressed against the film to form a cylindrical film. Filled with fish sausage surimi inside the tubular film, clipped (sealed) both ends with aluminum steel wire, and set the length between ligating clips to 195mm under the filling condition of 240 / min. A cylindrical sealed package of Example 3 (fish sausage package: a reproduction of Japanese Patent Laid-Open No. 63-12471) was obtained (see FIG. 6). Table 9 shows the evaluation results of various performance evaluations.

[比較例4]
比較例4で使用する塩化ビニリデン系樹脂フィルムを以下の手順で作成した。サランロールフィルム[商品名;旭化成ケミカルズ(株)製、塩化ビニリデン系樹脂フィルム、幅600mm、厚さ0.04mm(厚さ0.02mmのダブルプライフィルム)、巻長1500m]を準備し、片側端部より44mm、152mm、260mm、368mm、476mmの位置をそれぞれの中心とする5ヶ所に、フィルム層を貫通する実施例1と同様の5個の切れ目(3個−2個−3個−2個−・・・の千鳥状に配置)を入れて、5行の108mm幅製品の全てが、108mm幅のフィルムの片側縁部から14mmのところに、フィルム層を貫通した切れ目群が配置(一方側のみで1列)されるように、原反の両側縁部(トリム屑)を取り除いてスリットして、幅108mm、厚さ0.04mm、長さ1200mの5巻の塩化ビニリデン系樹脂フィルムを得た。
[Comparative Example 4]
A vinylidene chloride resin film used in Comparative Example 4 was prepared by the following procedure. A saran roll film [trade name; manufactured by Asahi Kasei Chemicals Corporation, vinylidene chloride resin film, width 600 mm, thickness 0.04 mm (double ply film of thickness 0.02 mm), winding length 1500 m], one end 5 cuts (3-2 pieces-3 pieces-2 pieces similar to Example 1) penetrating through the film layer at five locations centering on positions of 44 mm, 152 mm, 260 mm, 368 mm, 476 mm from the part. -... in a zigzag pattern), 5 lines of 108mm wide products all have a cut group penetrating through the film layer at one side edge of the 108mm wide film. As shown in the figure, the two side edges (trim waste) of the original fabric are removed and slit, and five rolls of vinyl chloride with a width of 108 mm, a thickness of 0.04 mm and a length of 1200 m are obtained. To obtain a benzylidene-based resin film.

このうちの1巻を用いて、自動充填包装機(旭化成ケミカルズ(株)社製「ADP」)で、図7に示すように、フィルム層を貫通した切れ目群を有する側のフィルム縁部を折り返して、包装体の外側の重ね合わせ部分(フィルム外耳片)が2枚になるようにセットして、フィルムを筒状に製袋し、3枚の重ね合わせ部分を16mm(外耳片幅8mm+内耳片幅8mm)に設定し、重ね合わせ部分の中央に加圧電極(正電極)をあてて、フィルムに押圧接触させながら高周波にて熱融着し、筒状フィルムに形成して筒状フィルムの内部に魚肉ソーセージ用すり身を充填し、両端をアルミニゥム鋼線でクリップ(封止)し、240本/分の充填条件で、結紮クリップ間の長さを195mmに設定して、比較例4の筒状密封包装体(魚肉ソーセージ包装体:特許第2838225号公報の再現品)を得た(図7参照)。表9に各種性能評価の評価結果を示す。   Using one of these rolls, the automatic film filling machine ("ADP" manufactured by Asahi Kasei Chemicals Co., Ltd.) folds the film edge on the side having a group of cuts through the film layer as shown in FIG. Then, set the outer overlapping part (film outer ear piece) of the package so that there are two sheets, make the film into a cylindrical shape, and make the three overlapping parts 16 mm (outer ear piece width 8 mm + inner ear piece) The width is set to 8 mm), a pressure electrode (positive electrode) is applied to the center of the overlapped portion, and heat fusion is performed at a high frequency while being in pressure contact with the film. Filled with surimi for fish sausage, clipped (sealed) both ends with aluminum steel wire, and set the length between ligation clips to 195 mm under a filling condition of 240 / min. Sealed package (fish sausage Sokarada: to obtain a reproduced product) of Japanese Patent No. 2838225 (see Fig. 7). Table 9 shows the evaluation results of various performance evaluations.

Figure 0005385110
Figure 0005385110

Figure 0005385110
Figure 0005385110

本発明の易開封性筒状密封包装体は、消費者の使用時の易開封性を満足させるとともに、その製造過程における難開封性から包装体の破袋やピンホールを大幅に抑制でき、また、製品の長期保存性にも優れる。さらに、製品の湾曲も少ないため見栄えがよく、食品その他の各種包装用途において、広く有効に利用可能である。特に、レトルト処理等の高温加圧殺菌処理が必要とされる用途において、有効に利用可能である。   The easy-open tubular sealed package of the present invention satisfies the easy-openability at the time of use by consumers, and can greatly suppress breakage and pinholes of the package due to the difficult-openability in the manufacturing process. Excellent long-term shelf life of the product. Furthermore, since the product has few curves, it has a good appearance, and can be used widely and effectively in food and other various packaging applications. In particular, it can be effectively used in applications that require high temperature and pressure sterilization such as retort treatment.

1…内容物、2…筒状フィルム、3…シール部、6…フィルム外耳片、7…フィルム内耳片、8…傷痕群、8a…穴または切れ目、9…結紮部材(封止部材)、10…密封包装体、A…シール部の幅、B…穴または切れ目の深さ、C…フィルム耳片の厚さ、D…樹脂溜まり、Fa,Fb…当接面。   DESCRIPTION OF SYMBOLS 1 ... Contents, 2 ... Cylindrical film, 3 ... Seal part, 6 ... Film outer ear piece, 7 ... Film inner ear piece, 8 ... Scar group, 8a ... Hole or cut, 9 ... Ligating member (sealing member), 10 A sealed package, A a width of a seal portion, B a depth of a hole or a cut, C a thickness of a film ear piece, D a resin reservoir, Fa and Fb a contact surface.

Claims (2)

帯状の塩化ビニリデン系樹脂フィルムの両側縁部を重ね合わせ、この重ね合わせ部分を当該フィルムの長手方向にわたり所定の幅で熱融着してシール部を形成してなる筒状フィルムと、
内容物が充填された前記筒状フィルムの両端部を封止する封止部材と、
前記塩化ビニリデン系樹脂フィルムの一方の側縁部であって前記筒状フィルムの外側に帯状にはみ出したフィルム外耳片と、
を備えた密封包装体において、
前記重ね合わせ部分をなす前記塩化ビニリデン系樹脂フィルムの2つの当接面の少なくとも一方は、複数の不貫通の穴または切れ目が一列に並ぶように形成されてなる傷痕群を複数列有し、
前記傷痕群は、前記シール部の幅を超えて前記シール部を横切るように設けられていることを特徴とする易開封性密封包装体。
A cylindrical film formed by laminating both side edges of a belt-shaped vinylidene chloride-based resin film, and heat-sealing the overlapped portion with a predetermined width over the longitudinal direction of the film, thereby forming a seal portion;
A sealing member for sealing both ends of the tubular film filled with the contents;
A film outer ear piece that is one side edge of the vinylidene chloride-based resin film and protrudes in a band shape outside the cylindrical film;
In a sealed package with
At least one of the two contact surfaces of the vinylidene chloride-based resin film forming the overlapping portion has a plurality of scar groups formed such that a plurality of non-through holes or cuts are arranged in a line,
The easy-to-open sealed package, wherein the scar group is provided so as to cross the seal part beyond the width of the seal part.
前記不貫通の穴または切れ目の深さは、前記フィルム外耳片の厚さの20%〜70%であることを特徴とする請求項1に記載の密封包装体。   The sealed package according to claim 1, wherein the depth of the non-penetrating hole or cut is 20% to 70% of the thickness of the film outer ear piece.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020070058A (en) * 2018-10-31 2020-05-07 日本水産株式会社 Package by vinylidene chloride resin film

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* Cited by examiner, † Cited by third party
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JP7219536B2 (en) * 2017-10-16 2023-02-08 旭化成株式会社 Cylindrical package
JP7341942B2 (en) * 2019-06-21 2023-09-11 旭化成株式会社 Packaging and its manufacturing method

Family Cites Families (4)

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JPS6312471A (en) * 1986-07-03 1988-01-19 旭化成株式会社 Easy-open cylindrical sealed package packaged by vinylidene chloride group resin film
DE8804813U1 (en) * 1988-04-13 1988-06-09 Hoechst Ag, 65929 Frankfurt Tubular casing, in particular artificial sausage casing, with longitudinal axial adhesive tape
JPH02296673A (en) * 1989-04-28 1990-12-07 Kureha Chem Ind Co Ltd Film casing
JP5239440B2 (en) * 2008-03-25 2013-07-17 凸版印刷株式会社 Easy-open pillow packaging bag

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JP2020070058A (en) * 2018-10-31 2020-05-07 日本水産株式会社 Package by vinylidene chloride resin film
JP7344637B2 (en) 2018-10-31 2023-09-14 株式会社ニッスイ Packaging made of vinylidene chloride resin film

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