JP6333669B2 - Packaging method - Google Patents

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JP6333669B2
JP6333669B2 JP2014171944A JP2014171944A JP6333669B2 JP 6333669 B2 JP6333669 B2 JP 6333669B2 JP 2014171944 A JP2014171944 A JP 2014171944A JP 2014171944 A JP2014171944 A JP 2014171944A JP 6333669 B2 JP6333669 B2 JP 6333669B2
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resin film
shaped resin
packaging
storage
film
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JP2016043984A (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。   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 meat and fish, cooked prepared dishes, etc., are often placed on a tray made of foamed resin, etc., wrapped with a transparent resin film, and sold at retail stores. However, recently, from the viewpoint of reducing waste, non-tray packaging for packaging food without using a tray is spreading.

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 units are continuously formed on a resin film that is unwound from a raw roll and transported in a horizontal direction. There is an apparatus provided with a molding mechanism that performs sealing, and a sealing mechanism that covers and seals a storage portion in which a packaging object such as fresh food is stored so as to close the opening.

特開２００２−１４５２１５号公報JP 2002-145215 A 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, the packaging using such a packaging apparatus has a problem in terms of productivity because the packaging processing speed is slow.

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。   This invention is made | formed in view of the said situation, and makes it a subject to provide the packaging method which can perform non-tray packaging at a high packaging processing speed, and the shaping resin film continuous body used for this.

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 load comprising a long shaped resin film in which a plurality of concave storage portions for storing a packaging object are formed, and the storage portion is wound or folded in a compressed state. Shaped resin film continuum.
[2] A storage step of storing a packaging object in the storage part of the shaped resin film drawn out from the continuous shaped resin film continuous body according to [1], and after the packaging object is stored And a sealing step of sealing the lid film to the shaped resin film so as to close the opening of the storage portion.
[3] The packaging method according to [2], further including a developing step of developing the storage portion of the shaped resin film that has been fed out during 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。   ADVANTAGE OF THE INVENTION According to this invention, the packaging method which can perform non-tray packaging at a high packaging processing speed, and the shaping resin film continuous body used for this can be provided.

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 (winding 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 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.
<Continuous shaped resin film>
As the shaped resin film continuous body 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 into a bellows shape, etc. A shaped resin film folded body is 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 shaped resin film wound body (hereinafter, also simply referred to as a “wound body”) 10A. The wound body 10A of this example includes a long shaped resin film 11 in which a plurality of concave storage portions 12 in which a packaging object is stored are formed, and each of the plurality of storage portions 12 is crushed or folded. It has been wound in a compressed state. FIG. 1 shows a state in which the one end 11a side in the longitudinal direction of the shaped resin film 11 is slightly extended.

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 storage portion 12 is formed in a concave shape by a known molding method, and in this example, is formed in two rows in the width direction of the shaped resin film 11, 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 vacuum forming, pressure forming, and press forming. As described later, the vacuum forming method includes a plug assist method using a plug together with a female die.
In the wound body 10A of this example, the shaped resin film 11 is wound in a roll shape so that the opening 12a side of each storage 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 shaped resin film 11 may have a single layer structure or a multilayer structure, and a resin film having a single layer structure or a multilayer structure can be used as the material thereof. Examples of the raw material 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 from one of these resins or may be formed from 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 concrete structure of the shaping resin film 11, When the film for lid | covers mentioned later is sealed by heat seal, the surface of the side sealed by the film for lid | covers is heat-sealability. It is preferable that it consists of PE, PP, etc. which are excellent in. More specifically, from the viewpoint of such heat sealing properties, gas / water vapor barrier properties, moldability of the housing portion 12, etc., a three-layer film such as PE / PA / PE, PE / EVOH / PA / A four-layer film such as PE is preferred. An adhesive layer may be provided between the layers 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, 50-500 micrometers is preferable as thickness of parts other than the accommodating part 12, and 100-300 micrometers is more preferable. When the thickness is equal to or greater than the lower limit of the above range, the bottom and corners of the storage portion 12 have sufficient thickness and are excellent in strength. When it is not more than the upper limit of the above range, the moldability of the storage portion 12 is excellent. The thickness of parts other than the storage part 12 is equivalent 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, a raw fabric roll 21 around which a resin film 20 having a layer structure as described above (for example, PE / PA / PE, PE / EVOH / PA / PE, etc.) is wound is prepared. Then, the resin film 20 is unwound from the raw roll 21 and transported horizontally, and the storage unit 12 as shown in FIG. 1 is continuously formed on the resin film 20 by the molding device 30. The molding apparatus 30 in this example is a plug assist type vacuum molding apparatus having a female mold 31 positioned below the horizontally transported resin film 20 and a plug 32 positioned above the resin film 20. The concave storage portion 12 is formed by operating the suction mechanism (not shown) provided in the above to bring the resin film 20 into close contact with the surface of the female die 31 and lowering the plug 32 to press the resin film 20 from above. It can be done.
In FIG. 3, only one pair of the female mold 31 and the plug 32 is illustrated, but the wound body 10 </ b> A in FIG. 1 has the storage portions 12 formed in two rows in the width direction of the shaped resin film 11. Therefore, the actual molding apparatus 30 in this example has two pairs of female molds 31 and plugs 32.
Before the storage unit 12 is molded by the molding apparatus 30, the resin film 20 is usually preheated with 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。 Next, the resin film after the storage portion 12 is formed, that is, the shaped resin film 11 is wound up by the winding roll 40. By winding in this way, the shaped resin film 11 is wound while the storage portions 12 are crushed and compressed, and the shaped resin film wound body 10A of FIG. 1 is obtained.
In this example, since the winding is performed so that the opening 12a side of each storage unit 12 is on the outside and the bottom 12b side is on the inside, at the time of winding, The heading force acts and the storage portion 12 is more effectively compressed.

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 that sandwich the shaped resin film 11 is provided as a compression mechanism for compressing the storage unit 12 upstream of the take-up roll 40, and the shaped resin The storage unit 12 may be more effectively compressed by passing the film 11 between the sandwiching rolls 50a and 50b. Moreover, as shown in FIG. 4, as a compression mechanism, a pair of pressing plates 60a and 60b are arranged above and below the horizontally-shaped shaped resin film 11 so that the storage portion 12 is sandwiched and compressed. You may make it do. A pair of clamping rolls 50a and 50b and a pair of pressing plates 60a and 60b may be used in combination in the compression mechanism.

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。 The shaped resin film folded body (hereinafter, also simply referred to as “folded body”) 10B of FIG. 2 is a long shaped resin film 11 in which a plurality of storage portions 12 in which packaging objects are stored are formed. 1 is different from the wound body 10A of FIG. 1 in that the storage unit 12 is not wound in a compressed state but is folded in a bellows shape in a compressed state.
The storage portions 12 of the folded body 10B of this example are formed in two rows in the width direction of the shaped resin film 11 by a known molding method, similarly to the wound body 10A of FIG. Many are formed at equal intervals along the longitudinal direction of the shaped resin film 11. In this example, for each of the three storage portions 12 in the longitudinal direction, the fold and valley folds are repeated along the width direction with respect to the shaped resin film 11, 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 manufacturing the shaped resin film folded body 10B of FIG. 2, first, as in the production of the shaped resin film roll 10A, for example, the layer configuration as described above (for example, PE / PA / PE, PE / EVOH / PA / PE etc.) is prepared, and a raw film roll is prepared. The resin film is unwound from the original roll, and is transported horizontally to the molding apparatus. Mold continuously. Thereafter, the shaped resin film 11 on which the storage portion 12 is formed is not wound, but is folded by a not-shown film folding machine or the like to obtain the shaped 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 on which the storage part 12 is formed, the storage part is formed by a compression mechanism or the like including at least one of the pair of sandwiching 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, at the site of packaging fresh food, side dishes, etc., such as at a retail store backyard, the object to be packaged (fresh food, side dishes, etc.) using the wound body 10A of FIG. ) Will be described.
First, as shown in FIG. 5, the shaped resin film 11 is unwound from the shaped resin film roll 10A of FIG. At this time, the shaped resin film 11 is horizontally conveyed so that the opening 12a of the storage unit 12 faces upward. In addition, you may process the feed hole etc. which are not illustrated in the edge part of the width direction of the shaping resin film 11 so that horizontal conveyance may be easy here.
Next, the packaging object C is placed and stored in the storage portion 12 of the shaped resin film 11 that is horizontally conveyed by an operator manually or by an automatic storage mechanism (not shown) (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, when the packaging object C has a certain amount of mass, the storage unit 12 in a compressed state naturally expands downward due to its own weight. In addition, it is not necessary to separately perform a process for expanding the storage portion 12. However, when the packaging object C is lightweight, it is preferable to separately perform an unfolding step of unfolding the storage portion 12 of the drawn shaped resin film 11.
Examples of the expanding step include a step of blowing a high-pressure gas such as compressed air from the opening 12a to the storage portion 12, a step of sucking the bottom portion 12b of the storage portion 12 downward with a decompression device, and the like.
Such a development process may be performed simultaneously with storing the packaging object C in the storage unit 12, that is, in the storing process, or the packaging object is stored in the shaped resin film 11 that has been fed out. You may perform before accommodating in the part 12, ie, before an accommodation 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 unwound from the original roll 71 arranged above the shaped resin film 11 being transported horizontally, and the opening 12a of the storage unit 12 after the packaging object C is stored is opened. The film 70 for lid | covers is arrange | positioned so that it may block up. And the sealing film 80 provided with the heat sealing mechanism heat seals the film 70 for lid | covers on the periphery of each accommodating part 12 in the shaping resin film 11, and seals each accommodating part 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 step, the periphery (flange portion) of each storage part 12 heat-sealed by a cutting device 90 having a vertical cut mechanism and a horizontal cut mechanism so as to be separated for each storage part 12. Cut (cutting step). Moreover, you may trim the edge part of the width direction of the heat-sealed shaped resin film 11 and the film 70 for lid | covers as needed.
Thereby, the individual packaging bodies P in which the packaging objects C are stored in the storage unit 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 multi-layer structure, and in this case, the configuration is selected according to the heat sealing property, gas / water vapor barrier property, and the like. For example, the surface to be sealed with the shaped 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。 When the storage unit 12 is sealed, the storage unit 12 is sucked into a vacuum state for the purpose of maintaining the freshness of the packaging object C or the storage unit 12 is filled with a gas such as nitrogen gas or carbon dioxide gas. May be.
Further, the sealing in the sealing step is not limited to heat sealing, and may be, for example, ultrasonic sealing.

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。   In the case of packaging using the folded body 10B of FIG. 2 as the shaped resin film continuous body, the shaped resin film 11 is continuously drawn out from the folded body 10B, similarly to the case of the wound body 10A. , Storage process, sealing process, cutting process. Thereby, a package is obtained.

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 wound body 10A as shown in FIG. 1 is obtained by winding the long 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 long shaped resin film 11 in which the storage portion 12 has already been formed. Therefore, by using such a shaped resin film continuum, it is not necessary to perform a molding process for molding the storage unit 12 in a site where fresh food, prepared dishes, etc. are packaged, such as a backyard of a retail store. . Therefore, non-tray packaging can be performed at a high packaging processing speed at the packaging site. The molding process of the storage portion may involve preheating of the resin film before molding, cooling after molding, and the like, and time is required. Therefore, omitting the molding process of the storage part is a great merit at the packaging site.
Further, the shaped resin film wound body 10A and the shaped resin film folded body 10B described above 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 where the storage unit 12 is molded and the packaging site where the packaging object C is packaged are separated, it 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 shaped resin film 11 is wound in a roll shape so that the opening 12a side is the outside and the bottom 12b side is the inside, but the opening 12a side is the inside and the bottom 12b side is the It may be wound so as to be on the outside. At this time, if it is difficult for the storage portion 12 to be compressed during winding, the storage portion 12 may be compressed by the compression mechanism described above.

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 storage portions 12 formed in the width direction of the shaped resin film 11 can be appropriately determined according to the packaging object C. Examples of the packaging object C include fresh foods such as meat and fish and foods such as cooked prepared dishes, as well as pharmaceuticals, medical supplies, parts, miscellaneous goods, stationery, toys and the like.

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: Packaging object 10A: Shaped resin film roll 10B: Shaped resin film folded body 11: Shaped resin film 12: Storage part 12a: Opening part of storage part 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、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包装方法。 It is composed of a long shaped resin film in which a plurality of concave storage portions for storing packaging objects are formed, and a continuous shaped resin film wound or folded in a state where the storage portion is compressed,
The housing portion of the shaping resin film fed out from the shaping resin film continuum, a storage step of storing the object to be packaged,
A sealing step of sealing a lid film to the shaped resin film so as to close the opening of the storage part after the packaging object is stored ,
A packaging method comprising: an unfolding step of unfolding the housing portion of the shaped resin film that has been fed out during or before the housing step .
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