JP6523519B2 - Packaging method - Google Patents

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JP6523519B2
JP6523519B2 JP2018083279A JP2018083279A JP6523519B2 JP 6523519 B2 JP6523519 B2 JP 6523519B2 JP 2018083279 A JP2018083279 A JP 2018083279A JP 2018083279 A JP2018083279 A JP 2018083279A JP 6523519 B2 JP6523519 B2 JP 6523519B2
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resin film
storage
packaging
shaped resin
wound
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JP2018111542A (en
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憲賢 品田
憲賢 品田
鈴木 秀樹
秀樹 鈴木
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Shin Etsu Polymer Co Ltd
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Description

本発明は、食品等の包装対象物を包装するために好適に使用される賦形樹脂フィルム連続体と、これを用いた包装方法に関する。   BACKGROUND OF THE INVENTION Field of the Invention The present invention relates to a shaped resin film continuous body suitably used for packaging a packaging object such as food and a packaging method using the same.

従来、肉類、魚類等の生鮮食品や調理済みの総菜等は、発泡樹脂等からなるトレーに載せられた後、透明樹脂フィルムでラッピングされて、小売店等で販売されることが多かった。しかし、最近では、廃棄物を低減する観点等から、トレーを使用せずに食品を包装するノントレー包装が広がりつつある。   Conventionally, fresh foods such as meats and fish, prepared general dishes and the like have often been placed on a tray made of foamed resin and the like, then wrapped with a transparent resin film and sold at retail stores and the like. However, recently, non-tray packaging for packaging food without using a tray is spreading from the viewpoint of reducing waste and the like.

ノントレー包装用の包装装置としては、たとえば特許文献1および2に記載されているように、原反ロールから巻き出され、水平方向に搬送される樹脂フィルムに、複数の収納部を連続的に成形する成形機構と、生鮮食品等の包装対象物が収納された収納部に対して、その開口部を塞ぐように、別の樹脂フィルムを被せてシールするシール機構とを備えた装置がある。   As a packaging apparatus for non-tray packaging, for example, as described in Patent Documents 1 and 2, a plurality of storage sections are continuously formed in a resin film which is unwound from a raw fabric roll and transported in the horizontal direction. There is an apparatus provided with a forming mechanism, and a sealing mechanism that covers and seals another resin film so as to close the opening of the storage unit in which the packaging object such as fresh food is stored.

特開2002−145215号公報Japanese Patent Laid-Open No. 2002-145215 特開2007−189995号公報JP 2007-189995 A

しかしながら、このような包装装置を用いた包装では、包装処理速度が遅く、生産性の点で問題があった。   However, in the packaging using such a packaging device, the packaging processing speed is slow and there is a problem in productivity.

本発明は上記事情に鑑みてなされたもので、高い包装処理速度で、ノントレー包装を行うことができる包装方法と、これに使用される賦形樹脂フィルム連続体の提供を課題とする。   The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a packaging method capable of performing non-tray packaging at a high packaging processing speed, and a shaped resin film continuous body used therefor.

本発明は以下の構成を有する。
[1]包装対象物が収納される凹状の収納部が複数形成された長尺な賦形樹脂フィルムからなり、前記収納部が圧縮された状態で巻回または折り畳まれたことを特徴とする賦形樹脂フィルム連続体。
[2][1]に記載の賦形樹脂フィルム連続体から繰り出された前記賦形樹脂フィルムの前記収納部に、包装対象物を収納する収納工程と、前記包装対象物が収納された後の前記収納部の開口部を塞ぐように、蓋用フィルムを前記賦形樹脂フィルムにシールするシール工程と、を有することを特徴とする包装方法。
[3]前記収納工程中、または、前記収納工程の前に、繰り出された前記賦形樹脂フィルムの前記収納部を展開する展開工程を有することを特徴とする[2]に記載の包装方法。
The present invention has the following configuration.
[1] A product characterized in that it is formed of a long shaped resin film in which a plurality of concave storage sections for storing objects to be packaged are formed, and the storage sections are wound or folded in a compressed state. -Shaped resin film continuum.
[2] [1] After the storage process of storing the packaging object in the storage section of the forming resin film drawn out from the forming resin film continuum, and after the packaging object is stored And a sealing step of sealing the lidding film to the shaping resin film so as to close the opening of the housing portion.
[3] The packaging method according to [2], including an expanding step of expanding the storage portion of the drawn-out shaped resin film drawn out during the storing step or before the storing step.

本発明によれば、高い包装処理速度で、ノントレー包装を行うことができる包装方法と、これに使用される賦形樹脂フィルム連続体を提供できる。   According to the present invention, it is possible to provide a packaging method capable of performing non-tray packaging at a high packaging processing rate, and a shaped resin film continuous body used therefor.

本発明の賦形樹脂フィルム連続体の一例(巻回体)を示す斜視図である。It is a perspective view which shows an example (rolling body) of the shaping resin film continuous body of this invention. 本発明の賦形樹脂フィルム連続体の他の一例(折畳体)を示す斜視図である。It is a perspective view which shows another example (folded body) of the shaping resin film continuous body of this invention. 図1の賦形樹脂フィルム連続体の製造方法の一例を説明する説明図である。It is explanatory drawing explaining an example of the manufacturing method of the shaping | molding resin film continuous body of FIG. 図1の賦形樹脂フィルム連続体の他の製造方法について、その要部を説明する説明図である。It is explanatory drawing explaining the principal part about the other manufacturing method of the shaping resin film continuous body of FIG. 本発明の包装方法の一例を示す説明図である。It is explanatory drawing which shows an example of the packaging method of this invention.

以下、本発明を詳細に説明する。
<賦形樹脂フィルム連続体>
本発明の賦形樹脂フィルム連続体としては、長尺な賦形樹脂フィルムがロール状に巻回された賦形樹脂フィルム巻回体、長尺な賦形樹脂フィルムが蛇腹状等に折り畳まれた賦形樹脂フィルム折畳体が挙げられる。
Hereinafter, the present invention will be described in detail.
<Formed resin film continuum>
As a shaped resin film continuum of the present invention, a shaped resin film wound body in which a long shaped resin film is wound in a roll shape, a long shaped resin film is folded in a bellows shape or the like Shaped resin film folds can be mentioned.

図1は、賦形樹脂フィルム巻回体(以下、単に「巻回体」ともいう。)10Aの一例を示す斜視図である。この例の巻回体10Aは、包装対象物が収納される凹状の収納部12が複数形成された長尺な賦形樹脂フィルム11からなり、複数の収納部12のそれぞれが、潰れたり折りこまれたりした圧縮された状態で、巻回されたものである。図1においては、賦形樹脂フィルム11の長手方向の一端11a側を若干繰り出した状態を示している。   FIG. 1 is a perspective view showing an example of a formed resin film wound body (hereinafter, also simply referred to as “rolled body”) 10A. The wound body 10A of this example is formed of a long shaped resin film 11 in which a plurality of concave storage portions 12 for storing the objects to be packaged are formed, and each of the plurality of storage portions 12 is crushed or folded It is wound in a rare compressed state. In FIG. 1, a state in which the one end 11 a side in the longitudinal direction of the shaping resin film 11 is slightly drawn is shown.

収納部12は、公知の成形方法で凹状に成形されたものであって、この例では賦形樹脂フィルム11の幅方向に2列に形成され、各列においては、賦形樹脂フィルム11の長手方向に沿って等間隔で多数形成されている。成形方法としては、たとえば真空成形法、圧空成形法、プレス成形法等の公知のフィルム成形法が挙げられる。真空成形法には、後述のように、雌型とともにプラグを用いるプラグアシスト法等がある。
この例の巻回体10Aにおいては、各収納部12の開口部12a側が外側、底部12b側が内側となるように、賦形樹脂フィルム11がロール状に巻回されている。
The housing portion 12 is formed in a concave shape by a known molding method, and is formed in two rows in the width direction of the shaped resin film 11 in this example, and in each row, the length of the shaped resin film 11 is Many are formed at equal intervals along the direction. Examples of the forming method include known film forming methods such as a vacuum forming method, a pressure forming method, and a press forming method. As the vacuum forming method, as described later, there is a plug assist method using a plug together with a female die.
In the wound body 10A of this example, the shaping resin film 11 is wound in a roll shape such that the opening 12a side of each accommodation portion 12 is the outside and the bottom 12b side is the inside.

賦形樹脂フィルム11は、単層構造でも多層構造でもよく、その材料には、単層構造または多層構造の樹脂フィルムを使用できる。各層の原料としては、ポリエチレン(PE)、ポリプロピレン(PP)等のポリオレフィン樹脂、ポリアミド(PA)、エチレンビニルアルコール共重合体(EVOH)等の樹脂が挙げられる。各層は、これらの樹脂の1種から形成されていても2種以上のブレンド物から形成されていてもよい。   The shaping resin film 11 may have a single layer structure or a multilayer structure, and as the material, a resin film of a single layer structure or a multilayer structure can be used. Examples of materials for each layer include polyolefin resins such as polyethylene (PE) and polypropylene (PP), and resins such as polyamide (PA) and ethylene vinyl alcohol copolymer (EVOH). Each layer may be formed of one of these resins, or may be formed of a blend of two or more.

賦形樹脂フィルム11の具体的な構成としては、特に制限はないが、後述する蓋用フィルムがヒートシールによりシールされる場合には、蓋用フィルムにシールされる側の表面が、ヒートシール性に優れるPE、PP等からなることが好ましい。このようなヒートシール性と、さらにガス・水蒸気バリア性、収納部12の成形性等の点からは、より具体的には、PE/PA/PE等の3層フィルム、PE/EVOH/PA/PE等の4層フィルム等が好ましい。各層間には、必要に応じて接着層が設けられていてもよい。   Although there is no restriction | limiting in particular as a specific structure of the shaping resin film 11, When the film for lids mentioned later is heat-sealed, the surface by which the film sealed for lids is heat-sealable It is preferable that it consists of PE, PP, etc. which are excellent in. More specifically, from the viewpoints of such heat sealing properties, gas / water vapor barrier properties, and the formability of the storage section 12, more specifically, a three-layer film such as PE / PA / PE, PE / EVOH / PA / A four-layer film such as PE is preferable. An adhesive layer may be provided between each layer as necessary.

賦形樹脂フィルム11の厚みとしては、収納部12以外の部分の厚みとして、50〜500μmが好ましく、100〜300μmがより好ましい。当該厚みが上記範囲の下限値以上であると、収納部12の底部や角部も充分な厚みを有し、強度に優れる。上記範囲の上限値以下であると、収納部12の成形性に優れる。収納部12以外の部分の厚みは、その材料である樹脂フィルムの厚みに相当する。   As thickness of the shaping resin film 11, as thickness of parts other than the accommodating part 12, 50-500 micrometers is preferable and 100-300 micrometers is more preferable. The bottom part and corner part of storage part 12 also have sufficient thickness as the thickness concerned is more than the lower limit of the above-mentioned range, and it is excellent in intensity. It is excellent in the moldability of storage part 12 as it is below the upper limit of the above-mentioned range. The thickness of the portion other than the storage portion 12 corresponds to the thickness of the resin film which is the material.

図1の賦形樹脂フィルム巻回体10Aは、次のように製造できる。
まず、図3に示すように、たとえば上述したような層構成(たとえばPE/PA/PE、PE/EVOH/PA/PE等。)の樹脂フィルム20が巻回された原反ロール21を用意し、該原反ロール21から樹脂フィルム20を繰り出して水平搬送し、成形装置30により、樹脂フィルム20に、図1に示したような収納部12を連続的に形成していく。
この例の成形装置30は、水平搬送される樹脂フィルム20の下方に位置する雌型31と、樹脂フィルム20の上方に位置するプラグ32とを有するプラグアシスト型真空成形装置であり、雌型31に備えられた図示略の吸引機構を作動させて樹脂フィルム20を雌型31の表面に密着させつつ、プラグ32を下降させて樹脂フィルム20を上から押さえつけることにより、凹状の収納部12を形成できるようになっている。
図3においては、雌型31とプラグ32の対を一対のみ図示しているが、図1の巻回体10Aは、収納部12が賦形樹脂フィルム11の幅方向に2列に形成されたものであるため、この例の実際の成形装置30は、雌型31とプラグ32の対を二対有している。
成形装置30で収納部12を成形する前には、通常、樹脂フィルム20を図示略のヒータで予熱する。
The shaped resin film roll 10A of FIG. 1 can be manufactured as follows.
First, as shown in FIG. 3, for example, an original fabric roll 21 having a resin film 20 of the above-described layer configuration (for example, PE / PA / PE, PE / EVOH / PA / PE, etc.) wound is prepared. The resin film 20 is fed out from the raw fabric roll 21 and horizontally conveyed, and the storage unit 12 as shown in FIG. 1 is continuously formed on the resin film 20 by the forming device 30.
The molding device 30 of this example is a plug-assisted vacuum molding device having a female die 31 located below the resin film 20 to be horizontally transported and a plug 32 located above the resin film 20. The concave storage portion 12 is formed by lowering the plug 32 and pressing the resin film 20 from above while bringing the resin film 20 into close contact with the surface of the female die 31 by operating the suction mechanism (not shown) provided in FIG. It can be done.
In FIG. 3, only the pair of the female die 31 and the plug 32 is illustrated, but in the wound body 10A of FIG. 1, the storage portions 12 are formed in two rows in the width direction of the forming resin film 11. As such, the actual forming apparatus 30 in this example has two pairs of female die 31 and plug 32.
Before molding the housing portion 12 with the molding device 30, the resin film 20 is usually preheated by a heater (not shown).

ついで、収納部12が形成された後の樹脂フィルム、すなわち賦形樹脂フィルム11を巻き取りロール40で巻き取る。このように巻き取っていくことにより、各収納部12が押し潰されて圧縮されつつ賦形樹脂フィルム11が巻回され、図1の賦形樹脂フィルム巻回体10Aが得られる。
この例では、特に、各収納部12の開口部12a側が外側、底部12b側が内側となるように巻き取っているため、巻き取り時に、各収納部12の底部12bに対して開口部12a側に向かう力が作用し、より効果的に収納部12が圧縮される。
Then, the resin film after the storage portion 12 is formed, that is, the shaping resin film 11 is wound by the winding roll 40. By being wound up in this manner, the shape forming resin film 11 is wound while the storage portions 12 are crushed and compressed, and the shape forming resin film wound body 10A of FIG. 1 is obtained.
In this example, in particular, since the opening 12a side of each accommodation portion 12 is wound outward and the bottom 12b side is inward, the winding operation is performed to the opening 12a side with respect to the bottom 12b of each accommodation portion 12 A force acts on the storage section 12 so as to compress the storage section 12 more effectively.

また、図3の例のように、巻き取りロール40よりも上流に、収納部12を圧縮する圧縮機構として、賦形樹脂フィルム11を挟持する一対の挟持ロール50a,50bを設け、賦形樹脂フィルム11が挟持ロール50a,50b間を通過することにより、収納部12がより効果的に圧縮されるようにしてもよい。また、圧縮機構として、図4に示すように、水平搬送される賦形樹脂フィルム11の上方と下方とに一対の押圧板60a,60bを配置し、これにより収納部12を挟持して、圧縮するようにしてもよい。圧縮機構には、一対の挟持ロール50a,50bと、一対の押圧板60a,60bとを併用してもよい。   Further, as in the example of FIG. 3, a pair of sandwiching rolls 50 a and 50 b sandwiching the forming resin film 11 is provided upstream of the take-up roll 40 as a compression mechanism for compressing the storage unit 12. The storage section 12 may be more effectively compressed by passing the film 11 between the holding rolls 50a and 50b. Further, as shown in FIG. 4, as a compression mechanism, a pair of pressing plates 60 a and 60 b are disposed above and below the shaped resin film 11 which is horizontally conveyed, and thereby the storage portion 12 is held and compressed. You may do it. The compression mechanism may use the pair of holding rolls 50a and 50b and the pair of pressing plates 60a and 60b in combination.

図2の賦形樹脂フィルム折畳体(以下、単に「折畳体」ともいう。)10Bは、包装対象物が収納される収納部12が複数形成された長尺な賦形樹脂フィルム11が、収納部12が圧縮された状態で巻き回されているのではなく、収納部12が圧縮された状態で蛇腹状に折り畳まれている点で、図1の巻回体10Aとは異なる。
この例の折畳体10Bの収納部12は、図1の巻回体10Aと同様に、公知の成形方法により、賦形樹脂フィルム11の幅方向に2列に形成され、各列においては、賦形樹脂フィルム11の長手方向に沿って等間隔で多数形成されている。そして、この例では、長手方向の3つの収納部12ごとに、賦形樹脂フィルム11に対して幅方向に沿って山折りと谷折りとが繰り返されることで、賦形樹脂フィルム11が蛇腹状に折り畳まれ、積層している。
In the shaped resin film folded body (hereinafter, also simply referred to as "folded body") 10B of FIG. This differs from the wound body 10A of FIG. 1 in that the storage portion 12 is not wound in a compressed state, but is folded in a bellows shape in a compressed state.
The housing portion 12 of the folded body 10B of this example is formed in two rows in the width direction of the forming resin film 11 by a known molding method as in the case of the wound body 10A of FIG. Many are formed at equal intervals along the longitudinal direction of the shaping resin film 11. Then, in this example, the mountain-shaped fold and the valley-fold are repeated along the width direction with respect to the shaped resin film 11 for each of the three storing portions 12 in the longitudinal direction, so that the shaped resin film 11 has a bellows shape. Folded and stacked.

図2の賦形樹脂フィルム折畳体10Bを製造する場合には、まず、賦形樹脂フィルム巻回体10Aの製造と同様に、たとえば上述したような層構成(たとえばPE/PA/PE、PE/EVOH/PA/PE等。)の樹脂フィルムが巻回された原反ロールを用意し、この原反ロールから樹脂フィルムを繰り出して、成形装置に水平搬送し、該成形装置により収納部12を連続的に成形していく。その後、収納部12が形成された賦形樹脂フィルム11を巻き取るのではなく、図示略のフィルム折り機等で折り畳むことにより、図2の賦形樹脂フィルム折畳体10Bが得られる。   In the case of producing the shaped resin film folded body 10B of FIG. 2, first, in the same manner as the production of the shaped resin film wound body 10A, for example, the layer configuration as described above (for example, PE / PA / PE, PE / EVOH / PA / PE etc.) is prepared, the resin film is drawn out from the original fabric roll, horizontally transported to a forming apparatus, and the storage unit 12 is formed by the forming apparatus. It will be molded continuously. Thereafter, the formed resin film 11 in which the storage portion 12 is formed is not wound up, but is folded by a film folding machine (not shown) or the like to obtain the formed resin film folded body 10B of FIG.

収納部12が形成された賦形樹脂フィルム11を折り畳む前には、上述したような一対の挟持ロール50a,50bおよび一対の押圧板60a,60bの少なくとも一方を備えた圧縮機構等により、収納部12を圧縮してもよい。   Before folding the shaped resin film 11 in which the storage portion 12 is formed, the storage portion is formed by a compression mechanism or the like provided with at least one of the pair of holding rolls 50a and 50b and the pair of pressing plates 60a and 60b as described above. 12 may be compressed.

<包装方法>
次に、小売店のバックヤード等の、生鮮食品や総菜等を包装する現場において、賦形樹脂フィルム連続体として図1の巻回体10Aを用いて、包装対象物(生鮮食品や総菜等。
)を包装する方法について説明する。
まず、図5に示すように、図1の賦形樹脂フィルム巻回体10Aから賦形樹脂フィルム11を繰り出し、水平搬送する。この際、収納部12の開口部12aが上方を向くよう、賦形樹脂フィルム11を水平搬送する。なお、ここで水平搬送しやすいように、賦形樹脂フィルム11の幅方向の縁部には、図示略の送り穴等を加工しておいてもよい。
ついで、水平搬送されている賦形樹脂フィルム11の収納部12に、作業者が手作業で、または、図示略の自動収納機構により、包装対象物Cを配置、収納する(収納工程)。
<Packaging method>
Next, in the back yard of a retail store or the like where fresh food, prepared food, etc. are packaged, the object to be packaged (fresh food, prepared food etc.) using the wound body 10A of FIG. 1 as a shaped resin film continuum.
I will explain how to package).
First, as shown in FIG. 5, the forming resin film 11 is drawn out from the forming resin film roll 10A of FIG. 1, and is horizontally conveyed. At this time, the shaping resin film 11 is horizontally transported such that the opening 12a of the storage portion 12 is directed upward. In addition, you may process the feed hole etc. which are not shown in figure in the edge of the width direction of the shaping resin film 11 so that horizontal conveyance may be easy here.
Next, the operator arranges and stores the object to be packaged C manually or by an automatic storage mechanism (not shown) in the storage section 12 of the shaped resin film 11 being horizontally transported (storage process).

ここで包装対象物Cがある程度の質量を有するものである場合には、その自重により、圧縮された状態にある収納部12が自ずと下方に広がって展開されるため、包装対象物Cの収納にあたって、別途、収納部12を広げるための工程を行う必要はない。しかしながら、包装対象物Cが軽量である場合等には、繰り出された賦形樹脂フィルム11の収納部12を展開する展開工程を別途行うことが好ましい。
展開工程としては、たとえば、収納部12に対してその開口部12aから圧縮空気等の高圧気体を吹き付ける工程、減圧装置で収納部12の底部12bを下方に吸引する工程等が挙げられる。
このような展開工程は、包装対象物Cを収納部12に収納する際に同時に、すなわち、収納工程において行ってもよいし、繰り出された賦形樹脂フィルム11に対して、包装対象物を収納部12に収納する前に、すなわち収納工程の前に行ってもよい。
Here, in the case where the packaging object C has a certain mass, the storage portion 12 in the compressed state is expanded by itself and spreads downward by its own weight. It is not necessary to separately carry out a process for expanding the storage unit 12. However, when the object to be packaged C is lightweight and the like, it is preferable to separately perform an expanding step of expanding the storage portion 12 of the drawn forming resin film 11.
As the expansion step, for example, a step of blowing high pressure gas such as compressed air from the opening 12a to the storage portion 12, a step of suctioning the bottom portion 12b of the storage portion 12 downward by a decompression device, etc. may be mentioned.
Such an expansion process may be performed simultaneously with storing the object to be packaged C in the storage portion 12, that is, in the storing process, or the object to be packaged is stored with respect to the drawn forming resin film 11. It may be performed before storing in the part 12, that is, before the storing process.

ついで、水平搬送されている賦形樹脂フィルム11よりも上方に配置された原反ロール71から、蓋用フィルム70を繰り出し、包装対象物Cが収納された後の収納部12の開口部12aを塞ぐように、蓋用フィルム70を配置する。そして、ヒートシール機構を備えたシール装置80により、賦形樹脂フィルム11における各収納部12の周縁に、蓋用フィルム70をヒートシールして各収納部12を密封する(シール工程)。   Next, the lid film 70 is fed out from the raw fabric roll 71 disposed above the shaping resin film 11 being horizontally transported, and the opening 12a of the storage portion 12 after the packaging object C is stored is obtained. The lid film 70 is disposed to close. Then, the lid film 70 is heat-sealed on the peripheral edge of each storage section 12 of the shaped resin film 11 by the sealing device 80 provided with a heat sealing mechanism to seal each storage section 12 (sealing process).

このようなシール工程の後、各収納部12ごとに切り離されるように、縦カット機構と横カット機構とを備えた切断装置90により、ヒートシールされた各収納部12の周縁(フランジ部)を切断する(切断工程)。また、必要に応じて、ヒートシールされた賦形樹脂フィルム11と蓋用フィルム70との幅方向の縁部をトリミングしてもよい。
これにより、包装対象物Cが収納部12に収納された個々の包装体Pを連続的に得ることができる。
After such a sealing process, the peripheral edge (flange portion) of each heat-sealed storage section 12 is cut by the cutting device 90 provided with the vertical cutting mechanism and the horizontal cutting mechanism so as to be separated for each storage section 12. Cut (cutting step). Moreover, you may trim the edge of the width direction of the heat-sealed shaping resin film 11 and the film 70 for lids as needed.
Thereby, each package P in which the packaging target object C was accommodated in the accommodating part 12 can be obtained continuously.

蓋用フィルム70は、単層構造でも多層構造でもよく、この例の場合にはヒートシール性、ガス・水蒸気バリア性等に応じて、その構成が選択される。たとえば、賦形樹脂フィルム11とシールされる表面は、ヒートシール性の点で、PE、PP等からなることが好ましい。   The lid film 70 may have a single layer structure or a multilayer structure, and in the case of this example, the configuration is selected according to the heat sealability, the gas / water vapor barrier property and the like. For example, the surface to be sealed with the shaping resin film 11 is preferably made of PE, PP or the like in terms of heat sealability.

収納部12の密封時には、包装対象物Cの鮮度を維持する目的等で、収納部12を吸引して真空状態にしたり、収納部12に窒素ガス、二酸化炭素ガス等のガスを充填したりしてもよい。
また、シール工程でのシールは、ヒートシールに限定されず、たとえば超音波シール等であってもよい。
At the time of sealing the storage unit 12, for the purpose of maintaining the freshness of the object to be packaged C, etc., the storage unit 12 is sucked and vacuumed, or the storage unit 12 is filled with a gas such as nitrogen gas or carbon dioxide gas. May be
Further, the seal in the sealing step is not limited to the heat seal, and may be, for example, an ultrasonic seal or the like.

賦形樹脂フィルム連続体として、図2の折畳体10Bを用いて包装を行う場合には、折畳体10Bから賦形樹脂フィルム11を連続的に繰り出し、巻回体10Aの場合と同様に、収納工程、シール工程、切断工程を行う。これにより包装体が得られる。   When packaging is performed using the folded body 10B of FIG. 2 as the shaped resin film continuum, the shaped resin film 11 is continuously drawn out from the folded body 10B, similarly to the case of the wound body 10A. , Storing process, sealing process, cutting process. A package is obtained by this.

以上説明したように、図1に示したような賦形樹脂フィルム巻回体10Aは、収納部12が既に形成されている長尺な賦形樹脂フィルム11が巻回されたものである。また、図2に示したような賦形樹脂フィルム折畳体10Bは、収納部12が既に形成されている長尺な賦形樹脂フィルム11が折り畳まれたものである。そのため、これらのような賦形樹脂フィルム連続体を用いることにより、たとえば小売店のバックヤード等の、生鮮食品や総菜等を包装する現場において、収納部12を成形する成形工程を行う必要がない。よって、包装現場では、高い包装処理速度で、ノントレー包装を行うことができる。収納部の成形工程には、成形前における樹脂フィルムの予熱や成形後の冷却等が伴うこともあり、時間を要する。よって、収納部の成形工程を省けることは、包装現場においては大きなメリットとなる。
また、以上説明した賦形樹脂フィルム巻回体10Aおよび賦形樹脂フィルム折畳体10Bは、収納部12が圧縮された状態で、巻回されたり折り畳まれたりしているため、非常にコンパクトである。よって、収納部12を成形する成形現場と、包装対象物Cを包装する包装現場とが離れていても、問題なく、これを輸送することができる。
As described above, the shaped resin film winding body 10A as shown in FIG. 1 is obtained by winding the elongated shaped resin film 11 in which the storage portion 12 is already formed. Further, the shaped resin film folded body 10B as shown in FIG. 2 is obtained by folding the elongated shaped resin film 11 in which the storage portion 12 is already formed. Therefore, there is no need to carry out a molding process for molding the storage section 12 at the site where fresh food, general dishes, etc. are packaged, such as a backyard of a retail store, by using such a shaped resin film continuum . Therefore, at the packaging site, non-tray packaging can be performed at a high packaging processing speed. The molding process of the storage part may involve preheating of the resin film before molding, cooling after molding, and the like, which requires time. Therefore, omission of the forming process of the storage unit is a great advantage at the packaging site.
Further, the above-described shaped resin film wound body 10A and shaped resin film folded body 10B are very compact because they are wound or folded in a state where the storage portion 12 is compressed. is there. Therefore, even if the molding site for molding the storage section 12 and the packaging site for packaging the object C to be packaged are separated, they can be transported without any problem.

なお、例示した巻回体10Aでは、開口部12a側が外側、底部12b側が内側となるように、賦形樹脂フィルム11がロール状に巻回されているが、開口部12a側が内側、底部12b側が外側となるように巻回されていてもよい。その際、巻き取り時に収納部12が圧縮されにくければ、上述した圧縮機構により、収納部12を圧縮すればよい。   In the illustrated wound body 10A, the forming resin film 11 is wound in a roll shape so that the opening 12a side is outside and the bottom 12b side is inside, but the opening 12a side is inside and the bottom 12b side is It may be wound so as to be the outside. At this time, if it is difficult to compress the storage unit 12 at the time of winding, the storage unit 12 may be compressed by the above-described compression mechanism.

収納部12の形状および大きさや、賦形樹脂フィルム11の幅方向に形成する収納部12の個数は、包装対象物Cに応じて適宜決定できる。包装対象物Cとしては、肉類、魚類等の生鮮食品や調理済みの総菜等の食品の他、医薬品、医療用品、部品、雑貨、文房具、おもちゃ等も挙げられる。   The shape and size of the storage portion 12 and the number of the storage portions 12 formed in the width direction of the shaped resin film 11 can be appropriately determined according to the object C to be packaged. Examples of the packaging object C include pharmaceuticals, medical supplies, parts, general goods, stationery, toys, etc., as well as fresh foods such as meats and fish and foods such as prepared general dishes.

C:包装対象物
10A:賦形樹脂フィルム巻回体
10B:賦形樹脂フィルム折畳体
11:賦形樹脂フィルム
12:収納部
12a:収納部の開口部
70:蓋用フィルム
C: Package object 10A: Formed resin film wound body 10B: Formed resin film folded body 11: Formed resin film 12: Storage section 12a: Opening section of storage section 70: Film for lid

Claims (1)

包装対象物が収納される凹状の収納部が複数形成された長尺な賦形樹脂フィルムからなり、前記収納部が圧縮された状態で巻回または折り畳まれた賦形樹脂フィルム連続体を用い、
前記賦形樹脂フィルム連続体から繰り出された前記賦形樹脂フィルムの前記収納部に、包装対象物を収納する収納工程と、
前記包装対象物が収納された後の前記収納部の開口部を塞ぐように、蓋用フィルムを前記賦形樹脂フィルムにシールするシール工程と、を有する包装方法であって、
前記収納工程中、繰り出された前記賦形樹脂フィルムの前記収納部を前記包装対象物の自重によって下方に展開する展開工程を有することを特徴とする包装方法。
Using a shaped resin film continuum which is formed of a long shaped resin film in which a plurality of concave storage portions for storing the objects to be packaged are formed, and the storage portions are compressed.
A storage step of storing an object to be packaged in the storage portion of the shaped resin film drawn out from the shaped resin film continuum;
And a sealing step of sealing the lidding film to the forming resin film so as to close the opening of the storage section after the packaging object has been stored.
A packaging method comprising: an expanding step of expanding the storage portion of the drawn out formable resin film under the storage step by the own weight of the object to be packaged during the storage step.
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