JP5009393B2 - Package for microwave processing - Google Patents

Package for microwave processing Download PDF

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JP5009393B2
JP5009393B2 JP2010093695A JP2010093695A JP5009393B2 JP 5009393 B2 JP5009393 B2 JP 5009393B2 JP 2010093695 A JP2010093695 A JP 2010093695A JP 2010093695 A JP2010093695 A JP 2010093695A JP 5009393 B2 JP5009393 B2 JP 5009393B2
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film
label
package
shape
cut
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JP2010179966A (en
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俊明 宮島
修生 上田
孝之 寺田
雅一 平山
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Fuji Seal International Inc
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Description

本発明は、マイクロ波照射することにより、包装体の被着フィルムに所望の切れ目を形成することができるマイクロ波処理用包装体に関する。 The present invention, by irradiating microwaves, for the desired cut can form luma microwave treatment package to the deposition film of the package.

従来、マイクロ波処理用包装体の被包フィルムに導電体が設けられたラベルを貼着し、マイクロ波照射による誘導加熱を利用して被包フィルムを開封し易くする技術として、実公平8−281号公報記載の包装体が知られている。この公報には、ラベル基材の裏面にマイクロ波により発熱する層が設けられた開封用ラベルを、粘着剤を介して、被包フィルムの表面に貼着したマイクロ波処理用包装体が開示されており、かかる包装体は、これをマイクロ波に曝すことにより、発熱層が発熱してこれに対応する被包フィルムの一部が熱劣化し、その後、開封用ラベルを引き剥がすことにより、劣化した部分が起点となって被包フィルムを開封することができるものである。
また、マイクロ波照射により導電体を発熱させて容器の蓋材に通蒸用開口を形成する技術として、特公平6−67341号公報記載のものが知られている。この公報には、食品を収容した容器の蓋フィルムに、導電体よりなるアンテナとこのアンテナ端部に高抵抗体からなる発熱体とを設けた電子レンジ調理用密封容器が開示されており、かかる密封容器は、これをマイクロ波に曝すことにより、発熱体が発熱してこれに対応する蓋フィルムの一部が熱溶融し、マイクロ波照射時に生ずる水蒸気を外部に逃がすことができるものである。
Conventionally, as a technique for sticking a label provided with a conductor to an enveloping film of a microwave processing packaging body and making it easier to open the encapsulating film using induction heating by microwave irradiation, A package described in Japanese Patent No. 281 is known. This publication discloses a microwave processing package in which an opening label provided with a layer that generates heat by microwaves is provided on the back surface of a label substrate, and is attached to the surface of an encapsulating film via an adhesive. Such a package is exposed to microwaves, the heat generation layer generates heat, and a part of the encapsulated film corresponding to the heat generation deteriorates, and then the opening label is peeled off. The encapsulated film can be opened from the starting point.
Further, a technique described in Japanese Patent Publication No. 6-67341 is known as a technique for forming a steaming opening in a container lid by heating a conductor by microwave irradiation. This publication discloses a sealed container for cooking a microwave oven in which a cover film of a container containing food is provided with an antenna made of a conductor and a heating element made of a high resistance at the end of the antenna. When the sealed container is exposed to microwaves, the heating element generates heat, and a part of the corresponding lid film is melted by heat, so that water vapor generated during microwave irradiation can be released to the outside.

しかしながら、上記実公平8−281号の包装体は、マイクロ波照射によって熱劣化した部分がラベルで覆われているので、外部から被包フィルムの変化が判らず、このラベルが被包フィルムの開封に利用できるものであることに気付かない使用者(マイクロ波処理を行う者)も居るから、上記開封用ラベルを用いずに被包フィルムを開封することがある。また、熱劣化しうる部分を覆うようにラベルが貼着されているので、包装体が被包フィルムにて密封包装されている場合には、マイクロ波照射時に収容物から生じる水蒸気を外部に逃がすことが難しく、従って、通蒸を目的として用いることはできない。
一方、特公平6−67341号は、マイクロ波照射時に、蓋材に小孔が開口して蒸気を逃がすことができるが、マイクロ波照射後の被包フィルムの開封に関して何ら開示されておらず、又、蓋材は、容器の形状や収容物などによって、多種類の形状・素材のものが存在するため、これら多種類の蓋材に応じて上記アンテナや発熱体の2種類の部分を設けなけなければならない。また、該公報には、アンテナのみを設ける例として、平面視線状のアンテナの端部を対向させてなる態様が開示されている。しかし、かかる手段では、マイクロ波照射時に、極めて小さい孔しか開けることができず、この部分を起点として蓋体を開封できないばかりか、例えば、蒸気が噴出する際に固形収容物が内側から小孔に張り付きこれを塞ぐ虞があり、通蒸用孔の形成手段としても十分とは言えない。
However, since the packaging body of the actual fair No. 8-281 is covered with a label at a portion that has been thermally deteriorated by microwave irradiation, the change in the encapsulating film is not known from the outside. Some users (those who perform microwave processing) do not notice that they can be used in the past, so the enveloping film may be opened without using the opening label. In addition, since the label is attached so as to cover the part that can be thermally deteriorated, when the package is hermetically packaged with the encapsulated film, the water vapor generated from the contents during microwave irradiation is released to the outside. It is difficult to use for steaming purposes.
On the other hand, in Japanese Patent Publication No. 6-67341, at the time of microwave irradiation, a small hole is opened in the cover material and vapor can escape, but nothing is disclosed regarding opening of the encapsulated film after microwave irradiation, In addition, since there are many kinds of shapes and materials depending on the shape of the container, the contents of the container, etc., the two types of the antenna and the heating element must be provided in accordance with these kinds of lids. There must be. In addition, this publication discloses an example in which only an antenna is provided, in which the ends of an antenna having a planar view line are opposed to each other. However, such means can not only open a very small hole at the time of microwave irradiation, and not only can the lid be opened from this part, but also, for example, when the vapor is ejected, the solid container has a small hole from the inside. There is a risk of sticking to this, and it is not sufficient as a means for forming a hole for steaming.

実公平8−281号公報Japanese Utility Model Publication No. 8-281 特公平6−67341号公報Japanese Patent Publication No. 6-67341

そこで、本発明は、マイクロ波照射により、被着フィルムに所望の開封用の切れ目を安価に形成することができ、これを起点として被着フィルムを容易に開封することができるマイクロ波処理用包装体を提供することを課題とする。 Accordingly, the present invention is, by microwave irradiation, it is possible to inexpensively form a cut for a desired opening to an adherend film, a microwave treatment capable of easily opening the deposition film as a starting point It is an object to provide a package.

本発明は、被着フィルムが容器に密封状に包装されているマイクロ波処理用包装体であって、導電体層が積層されたラベル基材と、前記ラベル基材の裏面に設けられた貼着剤層とを有し、前記貼着剤層が設けられた範囲内において前記導電体層にスリット部が形成されている破断用ラベルが、前記被着フィルムの一面の、前記被着フィルムと容器の間に存する間隙に対応して貼着されており、マイクロ波照射時に、前記被着フィルムに前記破断用ラベルのスリット部に沿って切れ目が形成されるマイクロ波処理用包装体を提供する。 The present invention is a microwave processing package in which a film to be deposited is packaged in a container in a hermetically sealed manner, and a label substrate on which a conductor layer is laminated, and a label provided on the back surface of the label substrate. An adhesive layer, and a breakable label in which a slit portion is formed in the conductor layer within a range in which the adhesive layer is provided , the adhesive film on one surface of the adhesive film, Provided is a microwave processing package which is attached corresponding to a gap existing between containers, and in which a cut is formed in the adherent film along a slit portion of the breakable label at the time of microwave irradiation. .

かかる破断用ラベルは、マイクロ波処理用包装体の被着フィルムに貼着して使用され、得られた包装体をマイクロ波に曝すことにより、スリット部の形状に沿った切れ目が被着フィルムに形成される。これは、マイクロ波に曝されると導電体層の至るところで渦電流が発生し、生じた電流がエッジランナウェイ現象により導電体層のスリット部(導電体層の側端面が対向した部分)に集まってスパークを起こし、このスパークがスリット部を通じて被着フィルムに作用して、被着フィルムにスリット部と略同じ形状の切れ目が形成されるもの、又は、上記電流によってスリット部付近が高温に発熱することにより被着フィルムが溶融などするものと推察される。従って、このスリット部を比較的大きく形成することにより、マイクロ波照射時、被着フィルムの一部分に、固形収容物によって塞がれることのない大きな穴部を形成できる。よって、被着フィルム内に生じる蒸気を外部に確実に逃がすことができる。
上記マイクロ波処理用包装体は、マイクロ波照射時、破断用ラベルの作用により、被着フィルムにスリット部に沿った形状の切れ目が形成されるから、この切れ目によって通蒸や開封を確実に行うことができる。
また、スリット部を所望形状に形成することにより、開封の便に優れる開封用の切れ目を被着フィルムに形成することもできる。
Such a breakable label is used by being attached to an adherent film of a microwave treatment packaging body, and by exposing the obtained packaging body to microwaves, a cut along the shape of the slit portion is formed on the adherent film. It is formed. This is because, when exposed to microwaves, eddy currents are generated throughout the conductor layer, and the generated current is caused by the edge runaway phenomenon in the slit portion of the conductor layer (the portion where the side end surfaces of the conductor layer face each other). Collected to cause sparks, and this spark acts on the adherent film through the slit part, and the adherent film forms a cut having substantially the same shape as the slit part, or the current near the slit part generates heat to a high temperature. By doing so, it is inferred that the deposited film melts. Therefore, by forming the slit portion relatively large, a large hole portion that is not blocked by the solid container can be formed in a portion of the film to be deposited during microwave irradiation. Therefore, the vapor generated in the deposited film can be surely escaped to the outside.
In the microwave processing package, a cut having a shape along the slit portion is formed in the adherent film by the action of the breaking label during microwave irradiation, so that the cut and the opening are surely performed by the cut. be able to.
In addition, by forming the slit portion in a desired shape, it is possible to form a break for opening which is excellent in the convenience of opening in the deposited film.

本発明の好ましい態様では、ラベルの全層に渡って厚み方向に切り込むことによって前記スリット部が形成されるマイクロ波処理用包装体を提供する。 In a preferred embodiment of the present invention, there is provided a microwave processing package which the slits are formed by cutting in the thickness direction over the entire layer of label.

発明のマイクロ波処理用包装体は、上記破断用ラベルが被着フィルムに貼着されているので、マイクロ波照射により、被着フィルムにスリット部の形状に沿った切れ目を形成することができる。従って、破断用ラベルのスリット部を所望形状にすれば、通蒸のみならず、例えば、目立ちやすく、又開封の便に優れる開封用の切れ目を被着フィルムに形成できるマイクロ波処理用包装体を安価に製造することができる。 In the microwave processing package according to the present invention, since the breaking label is attached to the adherent film, a cut along the shape of the slit portion can be formed in the adherent film by microwave irradiation. . Therefore, if the slit portion of the breakable label is formed in a desired shape, a microwave treatment packaging body that can form not only steaming but also, for example, an opening break that is easily noticeable and excellent in opening convenience can be formed on the coated film. It can be manufactured at low cost.

第1実施形態のマイクロ波処理用包装体を示す斜視図。The perspective view which shows the package for microwave processing of 1st Embodiment. 図1のA−A線に於ける断面図を含む一部省略斜視図。FIG. 2 is a partially omitted perspective view including a cross-sectional view taken along line AA in FIG. 1. (a)〜(m)共に、各種のスリット部が形成されたラベルの平面図。(A)-(m) is a top view of the label in which various slit parts were formed. ラベル基材の他の実施形態を示す平面図。The top view which shows other embodiment of a label base material. (a)は、包装体に切れ目が形成された状態を示す要部拡大斜視図、(b)は、(a)のB−B線に於ける一部省略断面図。(A) is a principal part expansion perspective view which shows the state by which the cut | interruption was formed in the package, (b) is a partially abbreviated sectional view in the BB line of (a). (a)は、第2実施形態のマイクロ波処理用包装体を示す斜視図、(b)は、同包装体の袋片部を起立させた状態を示す斜視図。尚、図6、図7及び図10に於いて、網掛けは熱溶着部分を示している。(A) is a perspective view which shows the package for microwave processing of 2nd Embodiment, (b) is a perspective view which shows the state which stood up the bag piece part of the package. 6, 7, and 10, hatching indicates a heat welded portion. (a)は、同包装体に収容物が収納された状態を示す斜視図、(b)は、C−C線に於ける一部省略断面図、(c)は、同包装体をマイクロ波照射した際の状態を示す一部省略断面図。(A) is a perspective view showing a state in which the package is stored in the package, (b) is a partially omitted sectional view taken along the line CC, and (c) is a microwave diagram of the package. Partially omitted sectional view showing a state when irradiated. (a)は、他実施形態包装体に切れ目が形成された状態を示す断面を含む一部省略斜視図、(b)は、ラベルの他の実施形態を示す平面図。(A) is a partially-omission perspective view including the cross section which shows the state by which the cut was formed in the package of other embodiment, (b) is a top view which shows other embodiment of a label. (a)、(b)共に、包装体の他の実施形態を示す断面図。(A), (b) is sectional drawing which shows other embodiment of a package. 包装体の他の実施形態を示す斜視図。The perspective view which shows other embodiment of a package body.

以下、本発明について、図面を参照しつつ具体的に説明する。
<第1実施形態>
図1及び図2に於いて、1は、電子レンジ調理食品等のマイクロ波により加熱される収容物が収容された容器2の周囲を、被包フィルム3(被着フィルムに相当する)にて密封包装してなる包装体4と、この包装体4の被包フィルム3の表面の一部分に貼着された破断用ラベル5と、からなるマイクロ波処理用包装体を示す。
容器2の上面開口部には、食品などの収容物を包装するために、例えば樹脂成形品からなる蓋材2aが嵌着されており、この蓋材2aの一部には、内側に凹んだ凹状部が形成されている。
Hereinafter, the present invention will be specifically described with reference to the drawings.
<First Embodiment>
1 and 2, reference numeral 1 denotes an enveloping film 3 (corresponding to an adherent film) around a container 2 in which a container to be heated by microwaves such as a microwave oven cooked food is stored. A microwave processing package comprising: a package 4 formed by hermetically wrapping; and a breaking label 5 attached to a part of the surface of the encapsulating film 3 of the package 4 is shown.
A lid member 2a made of, for example, a resin molded product is fitted in the upper surface opening of the container 2 in order to wrap a container such as food, and a part of the lid member 2a is recessed inside. A concave portion is formed.

破断用ラベル5は、装飾フィルム61とベースフィルム62の2層からなる基材6と、この基材6の裏面に積層された導電体層7とからなるラベル基材の裏面(導電体層7の裏面)に、一側端部の剥離用摘み代10を除いて、粘着剤からなる貼着剤層8が設けられて構成されている。さらに、破断用ラベル5には、最上層の装飾フィルム61から最下層の貼着剤層8の裏面に渡るスリット部9が形成されている。このスリット部9は、ラベル5を厚み方向全層に渡って、カッターなどで切り込むことにより形成されている。
このスリット部9の平面形状は、特に限定されず、例えば、図3(a)〜(d)に示すような、直線状、略V字状、略U字状などの単数の直線又は非直線からなる形状、同図(e)〜(g)に示すように、略X状、略十字状、対向接触する2本の略U字状などの複数の直線又は非直線交差からなる形状、同図(h)〜(j)に示すように、直線、略V字状などの非直線の複数を平行に配置させた形状や直線、略V字状などの非直線の複数を非平行(例えば対向させる)に配置させた形状、同図(k)及び(l)に示すように、略円形状(楕円などを含む)、略四角形状、略三角形状などの無端線からなる形状、同図(m)に示すように、これら各線を適宜組み合わせた形状などが例示される。
The breakable label 5 is a back surface (conductor layer 7) of a label base material comprising a base material 6 composed of two layers of a decorative film 61 and a base film 62, and a conductor layer 7 laminated on the back surface of the base material 6. The adhesive layer 8 made of an adhesive is provided on the back surface) except for the peeling tab 10 for peeling at one side end. Further, the breakable label 5 has a slit portion 9 extending from the uppermost decorative film 61 to the back surface of the lowermost adhesive layer 8. The slit portion 9 is formed by cutting the label 5 with a cutter or the like over the entire layer in the thickness direction.
The planar shape of the slit portion 9 is not particularly limited. For example, as shown in FIGS. 3A to 3D, a single straight line or a non-straight line such as a linear shape, a substantially V shape, or a substantially U shape. A shape consisting of a plurality of straight lines or non-linear intersections, such as a substantially X shape, a substantially cross shape, and two generally U-shapes that face each other, as shown in FIGS. As shown in FIGS. (H) to (j), a shape in which a plurality of non-straight lines such as straight lines and substantially V shapes are arranged in parallel, and a plurality of non-linear shapes such as straight lines and substantially V shapes are non-parallel (for example, The shape arranged in the opposite direction, as shown in the same figure (k) and (l), a shape composed of endless lines such as a substantially circular shape (including an ellipse), a substantially rectangular shape, a substantially triangular shape, etc. As shown in (m), the shape etc. which combined these each line suitably are illustrated.

後述するように、このスリット部9の平面形状は、マイクロ波照射により、被包フィルム3に形成される切れ目と略同一となることから、好ましいスリット部9の形状は、被包フィルム3に形成したいと所望する形状を考慮して決定される。例えば、マイクロ波照射により、主として通蒸目的の切れ目を形成したいと所望する場合には、同図の例の何れのものでもよい。尚、通蒸のみを目的とする場合には、収容固形物によって切れ目が塞がれない程度、例えば、1本のスリット部9を長さ3mm以上程度に形成することが好ましい。
また、マイクロ波照射により、被包フィルム3に比較的大きな穴部を形成して開封起点を形成したいと所望する場合には、例えば、図3(c)〜(i)、(k)〜(m)などに示すような形状からなるスリット部9を形成すればよく、また、被包フィルム3に開封用摘み片を形成したいと所望する場合には、例えば同(c)〜(i)、(m)などに示すような形状からなるスリット部9を形成すればよい。これらの中でも、開封する際に好適に利用できる開封用切れ目を形成できる点から、略X字状や略十字状が好ましい。また、同図(k)〜(m)に示すスリット部9は無端状の部分を有するため、ラベル5を貼着する際に、無端状のスリット部9に囲われた領域が分離して一時に貼着できないことから、同図(a)〜(j)に示すような、有端状のスリット部9を形成することが好ましい。尚、開封目的の場合に於けるスリット部9の長さは、形成される切り目などを考慮して適宜設計される。
さらに、図2に示すように、スリット部9の隙間W(導電体層7の側端面7a,7aの隙間)は、1.0mm以下、好ましくは0.5mm以下、より好ましくは0.2mm以下であり、側端面7a,7a同士が実質的に接触していてもよい(スリット部9に実質的に隙間がない)。
As will be described later, since the planar shape of the slit portion 9 is substantially the same as the cut formed in the encapsulating film 3 by microwave irradiation, the preferable shape of the slit portion 9 is formed in the encapsulating film 3. The desired shape is determined in consideration of the desired shape. For example, when it is desired to form a cut mainly for the purpose of steaming by microwave irradiation, any of the examples in the figure may be used. In addition, when aiming only at vaporization, it is preferable to form the slit part 9 in the length of about 3 mm or more, for example, so that the cut is not blocked by the contained solid matter.
Moreover, when it is desired to form a relatively large hole in the encapsulating film 3 by microwave irradiation to form an opening start point, for example, FIGS. 3 (c) to 3 (i), (k) to ( m) or the like, the slit portion 9 having a shape as shown in FIG. 5 may be formed. In addition, when it is desired to form an opening tab on the enveloping film 3, for example, (c) to (i), What is necessary is just to form the slit part 9 which consists of shapes as shown to (m). Among these, a substantially X shape or a substantially cross shape is preferable from the viewpoint that an opening cut can be suitably used when opening. Moreover, since the slit part 9 shown to the same figure (k)-(m) has an endless part, when sticking the label 5, the area | region enclosed by the endless slit part 9 isolate | separated and is one. Since it cannot sometimes stick, it is preferable to form the end-shaped slit part 9 as shown to the same figure (a)-(j). Note that the length of the slit portion 9 for the purpose of opening is appropriately designed in consideration of the cuts to be formed.
Furthermore, as shown in FIG. 2, the gap W (the gap between the side end faces 7a and 7a of the conductor layer 7) of the slit portion 9 is 1.0 mm or less, preferably 0.5 mm or less, more preferably 0.2 mm or less. The side end surfaces 7a and 7a may be substantially in contact with each other (the slit portion 9 is substantially free of gaps).

次に、基材6は、特に限定されず、合成樹脂製フィルム、合成紙、紙、異種の材質の積層体などを用いることができる。尚、装飾フィルム61には、商品名、商標、使用説明、絵柄などが印刷された意匠印刷層(図示せず)が設けられている。
導電体層7は、例えば、アルミニウム、ニッケル、クロムなどの金属、合金又は金属酸化物などの導電性物質を含有する層であり、金属蒸着、導電性物質を含むインキによる印刷、導電性物質の溶射、金属箔や導電性フィルムなどの接着などにより、基材6に積層される。中でも、導電体層7として蒸着層を用いれば、大きなスパークが発生し難く、使用者を驚かせないため好ましい。導電体層7の厚みは、金属蒸着の場合には、約0.005〜0.1μm程度、好ましくは0.015μm以上、より好ましくは0.04μm以上であり、好ましくは0.08μm以下である。例えば、アルミ蒸着の場合には、厚さ0.01〜0.08μm、好ましくは0.04〜0.06μmに形成される。また、金属箔の場合には、その金属の電気抵抗により異なるが、例えば厚さ1〜30μm程度、導電性物質含有インキを塗布する場合には、厚さ1〜20μm程度が例示される。尚、金属箔(例えば、厚さ5〜15μmのアルミニウム箔)を用いる場合、スリット部9の切断面(導電体層7の側端面7a)に、微細な凹凸、好ましくは、先端の尖った凸部を有する微細な凹凸(例えば、鋸刃状)が形成されていれば、スパークが発生し易くなるので好ましい態様である。また、導電体層7は、金属蒸着、金属箔などの接着、導電性インキのベタ印刷などによって基材6に容易に設けることができることから、基材6の全面に積層されていることが好ましいが、必ずしも基材6の全面に積層されている場合に限られず、基材6の一部に部分的に設けられていてもよい。尚、導電体層7の大きさは、マイクロ波処理する収容物や被包フィルム3の構成によって適宜設計される。
Next, the substrate 6 is not particularly limited, and a synthetic resin film, synthetic paper, paper, a laminate of different materials, or the like can be used. The decorative film 61 is provided with a design printing layer (not shown) on which a product name, a trademark, an instruction for use, a picture, and the like are printed.
The conductor layer 7 is a layer containing a conductive substance such as a metal such as aluminum, nickel, or chromium, an alloy, or a metal oxide, for example, metal deposition, printing with ink containing a conductive substance, The substrate 6 is laminated by thermal spraying, adhesion of a metal foil or a conductive film, or the like. Among these, it is preferable to use a vapor deposition layer as the conductor layer 7 because a large spark hardly occurs and does not surprise the user. In the case of metal deposition, the thickness of the conductor layer 7 is about 0.005 to 0.1 μm, preferably 0.015 μm or more, more preferably 0.04 μm or more, and preferably 0.08 μm or less. . For example, in the case of aluminum vapor deposition, the thickness is 0.01 to 0.08 μm, preferably 0.04 to 0.06 μm. Moreover, in the case of metal foil, although it changes with the electrical resistances of the metal, thickness is about 1-30 micrometers, for example, when apply | coating a conductive substance containing ink, thickness about 1-20 micrometers is illustrated. When a metal foil (for example, an aluminum foil having a thickness of 5 to 15 μm) is used, fine unevenness, preferably convexity with a sharp tip, is formed on the cut surface of the slit portion 9 (side end surface 7a of the conductor layer 7). If a fine unevenness having a portion (for example, a saw blade shape) is formed, a spark is easily generated, which is a preferable mode. The conductor layer 7 is preferably laminated on the entire surface of the substrate 6 because it can be easily provided on the substrate 6 by metal vapor deposition, adhesion of a metal foil, solid printing of conductive ink, or the like. However, the present invention is not necessarily limited to the case of being laminated on the entire surface of the substrate 6, and may be partially provided on a part of the substrate 6. In addition, the magnitude | size of the conductor layer 7 is suitably designed by the structure of the container to be microwave-processed, and the envelope film 3.

ラベル基材6の平面形状は特に限定されず、例えば、図2などに示すような長方形の他、図4に示すような略蝶ネクタイ状(2つの台形の上底を突き合わせた形状)、特に図示しないが、円形状、楕円形状、三角形状、その他の形状に形成することができる。
また、マイクロ波照射時に、スリット部9の形状に沿って切れ目を確実に形成するためには、導電体層7(導電体層7が全面に積層されている場合にはラベル基材6)は、ある程度の面積が必要と考えられる。後述するように、マイクロ波照射により切れ目が形成されるのは、導電体層7で生じた電流が導電体層7aのスリット部9に集まってスパーク等を生じることに起因すると考えられるので、マイクロ波を受けて電流を生じる部分である導電体層7が狭いと、十分に電流が生じなかったり、或いはスリット部9の一部分のみに電流が流れてスリット部9の形状に沿った大きな切れ目を形成し難くなると考えられる。このような観点及び被包フィルム3の構成などを考慮して、導電体層7の大きさは適宜設計すればよい。
The planar shape of the label substrate 6 is not particularly limited. For example, in addition to a rectangle as shown in FIG. 2 or the like, a substantially bow-tie shape (a shape in which two trapezoidal upper bases are abutted) as shown in FIG. Although not shown, it can be formed in a circular shape, an elliptical shape, a triangular shape, or other shapes.
Further, in order to surely form a cut along the shape of the slit portion 9 at the time of microwave irradiation, the conductor layer 7 (the label base material 6 when the conductor layer 7 is laminated on the entire surface) is A certain area is considered necessary. As will be described later, the reason why the cut is formed by the microwave irradiation is considered to be that the current generated in the conductor layer 7 gathers in the slit portion 9 of the conductor layer 7a and causes a spark or the like. If the conductor layer 7 that receives a wave and generates a current is narrow, the current is not sufficiently generated, or the current flows only in a part of the slit part 9 to form a large cut along the shape of the slit part 9 It will be difficult to do. In consideration of such a viewpoint and the configuration of the encapsulating film 3, the size of the conductor layer 7 may be appropriately designed.

上記破断用ラベル5を、被包フィルム3で密封状に包装された包装体4の被包フィルム3の上方部表面に、粘着剤層8を介して貼着することにより、マイクロ波処理用包装体1を得ることができる。
尚、通常、上記破断用ラベル5は、離型紙に貼った状態で提供されるが、その形態は特に図示しない。
被包フィルム3に貼着する箇所は、特に限定されないが、被包フィルム3と容器2が密着している部分に破断用ラベル5を貼着すると、容器2(蓋材を含む)の材質や厚みによっては、容器2まで切れ目が入る虞があるので、好ましくは、図2に示すように、被包フィルム3と容器2(例えば蓋材2aの凹状部)の間に間隙11を有する部分に破断用ラベル5を貼着することが好ましい。
また、被包フィルム3は、熱溶融しうるフィルムであって、包装に適するものであれば、その材質や厚みなどは特に限定されず、また、熱収縮性フィルム(シュリンクフィルム)でもよいし、ストレッチフィルム(自己伸縮性フィルム)でもよく、その性質についても限定されない。
By attaching the breakable label 5 to the upper surface of the encapsulating film 3 of the package 4 packaged in a hermetically sealed manner with the encapsulating film 3 via an adhesive layer 8, packaging for microwave processing is performed. The body 1 can be obtained.
Normally, the breaking label 5 is provided in a state of being attached to a release paper, but its form is not particularly shown.
The location to be attached to the encapsulating film 3 is not particularly limited, but when the breakable label 5 is adhered to the portion where the encapsulating film 3 and the container 2 are in close contact, the material of the container 2 (including the lid material) Depending on the thickness, there is a possibility that a break may occur up to the container 2. Therefore, preferably, as shown in FIG. 2, in a portion having a gap 11 between the encapsulating film 3 and the container 2 (for example, the concave portion of the lid member 2 a). It is preferable to attach the breakable label 5.
In addition, the encapsulating film 3 is a film that can be melted by heat and is not particularly limited as long as it is suitable for packaging, and may be a heat-shrinkable film (shrink film). A stretch film (self-stretchable film) may be used, and the properties thereof are not limited.

上記マイクロ波処理用包装体1は、これを電子レンジなどに入れてマイクロ波に曝すと、図5に示すように、被包フィルム3にスリット部9と略同形状(略X字状)の開封用切れ目12が形成される。これは、導電体層7で生じた電流が、導電体層7の側端面7a,7aの対向部分(スリット部9)に集まってスパーク等を生じ、これが貼着剤層8のスリット部9を通じて被包フィルム3に作用してこれを加熱溶融させ、被包フィルム3にスリット部9と略同形状の切れ目12を生じさせるものと考えられる。
そして、被包フィルム3にかかる切れ目12が形成されると、例えば、被包フィルム3の熱収縮によって、被包フィルム3に比較的大きな穴部14が形成されるから、使用者に判りやすく、この穴部14を開封起点として、被包フィルム3を容易に開封することができる。このように、スリット部9の形状に沿って開封用の切れ目12が形成されるので、このスリット部9の形状を、摘み片を形作り得る形状など(例えば平面略X字状など)に形成しておけば、この形状が転写された如く、被包フィルム3の一部が切り抜かれるから、これを摘んで被包フィルム3を引き裂き開封することができるのである。
例えば、ラベル5の剥離用摘み代10を摘んでラベル5を引き剥がしながら被包フィルム3を開封したり、或いは、図示したように、開封用摘み片15が形成されるようにスリット部9が形成されている場合には、この摘み片15を摘んで被包フィルム3を容易に開封することができる。
When the microwave processing package 1 is put in a microwave oven or the like and exposed to microwaves, the envelope film 3 has substantially the same shape as the slit portion 9 (substantially X-shaped) as shown in FIG. An opening cut 12 is formed. This is because the electric current generated in the conductor layer 7 gathers at the opposing portions (slit portions 9) of the side end faces 7a, 7a of the conductor layer 7 to generate sparks, etc., which are passed through the slit portions 9 of the adhesive layer 8. It is considered that the film 3 is heated and melted by acting on the encapsulating film 3 so that the encapsulating film 3 has a cut 12 having substantially the same shape as the slit portion 9.
And when the cut 12 concerning the encapsulating film 3 is formed, for example, a relatively large hole portion 14 is formed in the encapsulating film 3 due to heat shrinkage of the encapsulating film 3, so that the user can easily understand it. Using the hole 14 as an opening start point, the encapsulating film 3 can be easily opened. In this way, the opening cut 12 is formed along the shape of the slit portion 9, so that the shape of the slit portion 9 is formed into a shape that can form a knob (such as a substantially X-shaped plane). In this case, as the shape is transferred, a part of the encapsulating film 3 is cut out, so that the encapsulating film 3 can be torn and opened.
For example, the slit portion 9 is formed so as to open the enveloping film 3 while picking the peeling tab 10 for peeling off the label 5 and peeling the label 5 or to form the opening tab 15 as shown in the figure. In the case where it is formed, the enveloping film 3 can be easily opened by picking the knob 15.

本発明によれば、形成したいと思う好ましい切れ目12を想定し、これと略同形状のスリット部9が形成された破断用ラベル5を被包フィルム3に貼着することにより、予定した開封用切れ目12を確実に形成することができる。また、被包フィルム3などに破断用ラベル5を貼るだけで、マイクロ波照射後に切れ目12が形成されるので、例えば、破断用ラベル5を多数準備し、ラベラーなどを用いて既知の包装体の被包フィルム3の適宜箇所に貼着することにより、安価に且つ大量に、マイクロ波照射によって開封容易なマイクロ波処理用包装体を得ることができる。
さらに、上記包装体1が、被包フィルム3にて収容物を密封状に被覆してなる場合には、スリット部9に沿った切れ目12を通じ、蒸気を外部に多量に且つ確実に逃がして内圧上昇を防止できる。
また、本発明によれば、ポリエステルやポリアミドなどの比較的耐熱性に優れた素材を積層してなる被包フィルム3や、例えば、膜厚が100μm程度の被包フィルム3であっても、切れ目12を形成することができる。
According to the present invention, it is assumed that a preferable cut 12 is desired to be formed, and by attaching the breakable label 5 formed with the slit portion 9 having substantially the same shape as this to the encapsulating film 3, the intended opening The cut 12 can be reliably formed. Moreover, since the cut | interruption 12 is formed after microwave irradiation only by sticking the breakable label 5 on the enveloping film 3 etc., for example, a lot of the breakable labels 5 are prepared, and a known package is used with a labeler or the like. By attaching to an appropriate location of the encapsulating film 3, a package for microwave processing that can be easily opened by microwave irradiation can be obtained at a low cost and in a large amount.
Further, in the case where the package 1 is formed by covering the contents with the enveloping film 3 in a hermetically sealed manner, a large amount of steam is surely released to the outside through the cuts 12 along the slit portion 9, and the internal pressure is reduced. The rise can be prevented.
Further, according to the present invention, even if the encapsulating film 3 is formed by laminating a material having relatively high heat resistance such as polyester or polyamide, or the encapsulating film 3 having a film thickness of about 100 μm, for example, 12 can be formed.

さらに、全面に導電体層7が積層されたラベル基材を用いているので、従来のアンテナを設ける手段のように、所定形状の導電体層を個々に設ける必要がなく、また、導電体層7が積層されたラベル基材を厚み方向に切り込めば、簡易に所望形状のスリット部9を形成することができるので、ラベル5を容易に製造することができる。   Further, since the label base material having the conductor layer 7 laminated on the entire surface is used, it is not necessary to individually provide a predetermined shape of the conductor layer as in the conventional means for providing an antenna. If the label base material on which 7 is laminated is cut in the thickness direction, the slit portion 9 having a desired shape can be easily formed, so that the label 5 can be easily manufactured.

<第2実施形態>
第2実施形態は、袋片部に破断用ラベルが貼着されているマイクロ波処理用包装体に関する。以下、主として上記各実施形態と異なる部分を説明し、同様の構成については、用語及び図番を援用し、その説明を省略する。
Second Embodiment
2nd Embodiment is related with the package for microwave processing by which the label for a fracture | rupture is affixed on the bag piece part. Hereinafter, parts different from those of the above-described embodiments will be mainly described. For the same configuration, terms and drawing numbers are used, and description thereof is omitted.

図6に於いて、本実施形態に係るマイクロ波処理用包装体1は、収容物を密封収容可能な収容部21が形成された本体部22と、本体部22の一部分から延設されたフィルム片からなり且つ収容部21に連通する空間部23が形成された扁平状の袋片部24とを有し、この袋片部24の一面24aに、破断用ラベル5が貼着された構成からなる。
具体的には、本体部22は、例えば、重ねられた表裏フィルム25,26(被着フィルムに相当する)の周縁部を熱溶着することにより、内部に食品などの収容物を密封収容可能な収容部が形成された包装袋からなる。この表裏フィルム25,26は、熱溶融しうるフィルムであって、マイクロ波加熱用包装袋として一般に使用されているフィルムが用いられ、例えば、ガスバリア性を有するベースフィルム(単層又は複層のフィルム)の内面に、シーラントフィルムが積層されたフィルムなどが例示される。
In FIG. 6, the microwave processing package 1 according to the present embodiment includes a main body portion 22 in which a housing portion 21 capable of hermetically housing a container is formed, and a film extending from a part of the main body portion 22. A flat bag piece 24 formed of a piece and having a space portion 23 communicating with the housing portion 21, and the breaking label 5 is attached to one surface 24 a of the bag piece 24. Become.
Specifically, for example, the main body portion 22 can heat and seal the peripheral portions of the overlapped front and back films 25 and 26 (corresponding to a film to be deposited), thereby hermetically containing a container such as food. It consists of a packaging bag in which a housing part is formed. The front and back films 25 and 26 are heat-meltable films that are generally used as microwave heating packaging bags. For example, a base film having a gas barrier property (single or multi-layer film) ), And a film in which a sealant film is laminated.

袋片部24は、上記表フィルム25の長手方向中途部分を全巾繰り出すことにより、上縁で折り返されたフィルムからなる突出片が形成され、且つ、本体部22の収容部21の密封性を確保するため、本体部22の周縁部に連続するように突出片の両側縁部を熱溶着することによって形成された、フィルム製の扁平状袋からなる。かかる3方縁部(上縁及び両側縁部)が閉塞された袋片部24の内部には、本体部22の収容部21に連通する空間部23が形成されている。尚、袋片部24の両側縁部は、図示したように、溶着内縁が外側へ膨らむ円弧状に熱溶着されて封止されており、従って、袋片部24の空間部23は、外側へ膨らむ円弧状に形成されている。
また、柔軟なフィルムからなる袋片部24は、本体部22に対し倒立可能であるが、通常の状態(マイクロ波照射前の状態)では、図6(a)に示すように、袋片部24は、本体部22との連結部27にて折り曲げられて本体部22側へと倒されている。従って、袋片部24の一面24aは、本体部22の表フィルム25の表面に接するように重ねられている。
この袋片部24の一面24aのうち、空間部23が形成された領域に、上記破断用ラベル5のスリット部9が対応する(重なる)ように、貼着層8を介して破断用ラベル5が貼着されている。
The bag piece portion 24 is formed with a projecting piece made of a film folded back at the upper edge by drawing out the entire length of the front film 25 in the longitudinal direction, and the sealing property of the housing portion 21 of the main body portion 22 is improved. In order to ensure, it consists of the flat bag made from a film formed by heat-welding the both-sides edge part of a protrusion piece so that the peripheral part of the main-body part 22 may be followed. A space portion 23 communicating with the accommodating portion 21 of the main body portion 22 is formed inside the bag piece portion 24 with the three side edges (upper edge and both side edges) closed. In addition, as shown in the drawing, both side edges of the bag piece 24 are thermally welded and sealed in an arc shape in which the inner edge of the weld swells outward, so that the space 23 of the bag piece 24 is outward. It is formed in an arc shape that swells.
Further, the bag piece portion 24 made of a flexible film can be inverted with respect to the main body portion 22, but in a normal state (a state before microwave irradiation), as shown in FIG. 24 is bent at the connecting portion 27 with the main body portion 22 and tilted to the main body portion 22 side. Therefore, the one surface 24 a of the bag piece 24 is overlapped so as to be in contact with the surface of the front film 25 of the main body 22.
The breakable label 5 via the adhesive layer 8 so that the slit portion 9 of the breakable label 5 corresponds to (overlaps) the region where the space portion 23 is formed in the one surface 24a of the bag piece portion 24. Is attached.

上記マイクロ波処理用包装体1は、図7(a)、(b)に示すように、収容部21に食品などのマイクロ波加熱用の収容物を収容した状態で使用される。そして、この包装体1を電子レンジなどに入れてマイクロ波に曝すと、本体部22及び袋片部24の間に挟まれた状態の破断用ラベル5には、マイクロ波が十分に作用せず、早期に切れ目12は生じない。他方、マイクロ波照射により、収容物から蒸気が生じ、この蒸気によって収容部21の内圧が上がってくると、連通路28を通じて袋片部24の空間部23内に蒸気が流入し、所定時間経過後、空間部23が膨張して袋片部24が起立する(同図(c))。袋片部24が起立すると、破断用ラベル5にマイクロ波が十分に作用し、スリット部9が発熱して袋片部24の空間部23対応箇所に切れ目12が生じる。この切れ目12から蒸気が確実に外部に出るため、包装体1の破裂などを防止できる。   As shown in FIGS. 7A and 7B, the microwave processing package 1 is used in a state in which an accommodation for microwave heating such as food is accommodated in the accommodation portion 21. When the package 1 is put in a microwave oven or the like and exposed to microwaves, the microwaves do not sufficiently act on the breaking label 5 sandwiched between the main body 22 and the bag piece 24. The break 12 does not occur at an early stage. On the other hand, when the vapor is generated from the accommodation by the microwave irradiation, and the internal pressure of the accommodating portion 21 is increased by the vapor, the vapor flows into the space portion 23 of the bag piece portion 24 through the communication path 28, and a predetermined time has elapsed. Then, the space part 23 expand | swells and the bag piece part 24 stands up (the figure (c)). When the bag piece portion 24 stands up, microwaves sufficiently act on the breaking label 5, the slit portion 9 generates heat, and a cut 12 is generated at a location corresponding to the space portion 23 of the bag piece portion 24. Since the steam surely comes out from the cut 12, the package 1 can be prevented from rupturing.

本実施形態によれば、内圧上昇に伴い袋片部24が起立し、破断用ラベル5が本体部22から離反した後、マイクロ波が破断用ラベル5に作用するので、マイクロ波照射開始時からある程度の間は、収容部の内圧を高く維持できる。従って、蒸らし効果で風味の向上が期待される食品を包装する包装体1として特に好適である。
尚、本実施形態に於いて、袋片部24は、表フィルム25の中央部に設けられているものに限られず、その他の部分に設けられていても良い。
According to the present embodiment, since the bag piece portion 24 stands up with the increase in internal pressure and the breaking label 5 is separated from the main body portion 22, the microwave acts on the breaking label 5. For a certain period, the internal pressure of the accommodating portion can be maintained high. Therefore, it is particularly suitable as the packaging body 1 for packaging foods that are expected to improve flavor due to the steaming effect.
In the present embodiment, the bag piece portion 24 is not limited to the one provided in the central portion of the front film 25, and may be provided in other portions.

<他の実施形態>
その他、本発明は上記各実施形態に限定されるものではなく、本発明の意図する範囲で、適宜の構成を付加、代用、組合せ、設計変更などすることができる。以下、主として上記各実施形態と異なる部分を説明し、同様の構成については、用語及び図番を援用し、その説明を省略する。
(破断用ラベルについて)
上記各実施形態では、基材6は、2層のフィルムからなるが、単層でもよいし、3層以上の積層フィルムでもよい。また、導電体層7と貼着剤層8の間に、合成樹脂製フィルムなどを介在させてもよい。
また、スリット部9は、ラベル5の厚み方向全層に渡って形成される場合に限られず、導電体層7から貼着剤層8に渡ってスリット部9が形成されていてもよく、或いは導電体層7にのみスリット部9が形成されていてもよい。要は、少なくとも導電体層7にスリット部9が形成されていればよい。また、このスリット部9の形成方法は、上記のようにカッターなどによる切り込み形成が簡易で好ましいが、スリット部9の形成方法はこれに限られず、例えば、導電性物質を含有するインキで、スリット部9(隣合う導電体層7の側端面7a,7aに於ける隙間)を確保しながら導電体層7を印刷するなどの方法で形成してもよい。
尚、貼着剤層8は、粘着剤が好ましいが、感熱接着剤などの接着剤により構成することも可能である。また、剥離用摘み代10は設けられていなくてもよい。
<Other embodiments>
In addition, the present invention is not limited to the above-described embodiments, and appropriate configurations can be added, substituted, combined, and changed in design within the range intended by the present invention. Hereinafter, parts different from those of the above-described embodiments will be mainly described. For the same configuration, terms and drawing numbers are used, and description thereof is omitted.
(About breakable labels)
In each said embodiment, although the base material 6 consists of a 2 layer film, a single layer may be sufficient and a laminated film of 3 layers or more may be sufficient. Further, a synthetic resin film or the like may be interposed between the conductor layer 7 and the adhesive layer 8.
Moreover, the slit part 9 is not restricted to the case where it forms over the thickness direction whole layer of the label 5, The slit part 9 may be formed over the adhesive agent layer 8 from the conductor layer 7, or The slit portion 9 may be formed only in the conductor layer 7. In short, it is sufficient that at least the slit portion 9 is formed in the conductor layer 7. In addition, as described above, the slit portion 9 is preferably formed by cutting with a cutter or the like as described above. However, the method of forming the slit portion 9 is not limited to this. For example, the slit portion 9 may be formed of an ink containing a conductive material. You may form by the method of printing the conductor layer 7, etc., ensuring the part 9 (gap in the side end surfaces 7a and 7a of the adjacent conductor layer 7).
The adhesive layer 8 is preferably a pressure-sensitive adhesive, but can also be composed of an adhesive such as a heat-sensitive adhesive. Moreover, the peeling allowance 10 for peeling does not need to be provided.

また、基材6を、熱収縮性を有するフィルムで構成すれば、マイクロ波照射時に、切れ目12によって切り抜かれる開封用摘み片15を、図8(a)に示すように、外側に反って突出させることができるので好ましい。この場合、基材6は、被包フィルム3などの被着フィルムよりも熱収縮が大きいものを用い(被着フィルムが実質的に非収縮の場合には、基材6は少し熱収縮するものでよい)、又基材6が複層からなる場合には、最上層(最外層)のフィルムに、被着フィルムよりも熱収縮が大きいものを用いればよい(基材6の全層が熱収縮性を有する場合には、最上層が最も大きく熱収縮するものを用いる)。また、開封用摘み片15を大きく突出させるために、摘み片を形作り得る形状のスリット部9の両端部9a,9aを結んだ仮想線を、基材6の熱収縮方向Xに対して略直交するように配置することが好ましい。   Moreover, if the base material 6 is composed of a heat-shrinkable film, the opening tab 15 cut out by the cut 12 at the time of microwave irradiation protrudes outward as shown in FIG. 8 (a). This is preferable. In this case, the base material 6 has a larger thermal shrinkage than the film to be coated such as the encapsulating film 3 (when the film to be coated is substantially non-shrinkable, the base material 6 is slightly heat-shrinked). In the case where the substrate 6 is composed of a plurality of layers, the uppermost layer (outermost layer) film having a larger thermal shrinkage than the deposited film may be used (the entire layer of the substrate 6 is heated). If it has shrinkability, use the one whose top layer heat shrinks the most). Further, in order to make the opening knob 15 protrude greatly, a virtual line connecting both end portions 9a, 9a of the slit 9 having a shape capable of forming the knob is substantially orthogonal to the heat shrinkage direction X of the substrate 6. It is preferable to arrange so as to.

(包装体について)
上記第1実施形態に於いて、容器2を被包フィルム3にて密封状に包装してなる包装体4に破断用ラベル5を貼着することによりマイクロ波処理用包装体1が構成されているが、被包フィルム3によって密封状に包装されていない包装体4に破断用ラベル5を貼着してもよい。また、例えば、図9(a)に示すように、容器2の開口部を密封状に被覆する蓋フィルム3’(被着フィルムに相当する)に、破断用ラベル5を貼着することにより、マイクロ波処理用包装体1を構成してもよい。かかる包装体1は、上記と同様に、蓋フィルム3’のラベル5貼着部分に開封用切れ目12が形成されるので、蓋フィルム3’を開封し易く、また、この切れ目が収容物から生じる蒸気を逃がす通蒸用開口としても機能する。さらに、図9(b)に示すように、密封状の蓋フィルム3’が設けられた容器2の周囲を、被包フィルム3にて更に包装してなる場合には、蓋フィルム3’及び被包フィルム3の双方に破断用ラベル5を貼着してもよい。このように包装体の被着フィルム(例えば、被包フィルム3や蓋フィルム3’などのように、マイクロ波照射後に、開封する必要があるフィルム)に、破断用ラベル5を適宜貼着することにより、本発明のマイクロ波処理用包装体1を構成することができ、包装体の具体的構造などは限定されるものではない。
尚、破断用ラベル5は、被包フィルム3の表面に貼着する場合に限られず、被包フィルム3の裏面に貼着してもよい。
(About the package)
In the first embodiment, the microwave processing package 1 is configured by sticking the breakable label 5 to the package 4 formed by sealing the container 2 with the encapsulating film 3 in a sealed manner. However, the breaking label 5 may be attached to the package 4 that is not packaged in a sealed manner by the encapsulating film 3. Also, for example, as shown in FIG. 9A, by attaching the breakable label 5 to a lid film 3 ′ (corresponding to an adherent film) that covers the opening of the container 2 in a sealing manner, You may comprise the package 1 for microwave processing. In the package 1, the opening cut 12 is formed on the label 5 attachment portion of the lid film 3 ′, as described above, so that the lid film 3 ′ can be easily opened, and the cut is generated from the contents. It also functions as a steam passage opening to release steam. Furthermore, as shown in FIG. 9 (b), when the periphery of the container 2 provided with the sealed lid film 3 ′ is further packaged with the envelope film 3, the lid film 3 ′ and the envelope film 3 ′ are covered. You may stick the label 5 for a fracture | rupture to both the wrapping films 3. FIG. In this way, the label 5 for breakage is appropriately attached to the film to be packaged (for example, the film that needs to be opened after the microwave irradiation, such as the film 3 or the lid film 3 '). Thus, the microwave processing package 1 of the present invention can be configured, and the specific structure of the package is not limited.
Note that the breaking label 5 is not limited to being attached to the surface of the encapsulating film 3, and may be attached to the back surface of the encapsulating film 3.

また、包装体4は、容器2と蓋材とから構成されるものに限られず、例えば、図10に示すように、柔軟な表裏フィルム25,26にて袋状に形成された包装体4(いわゆるパウチ)の一面に破断用ラベル5を貼着することにより構成されたマイクロ波処理用包装体1でもよい。   Further, the package 4 is not limited to the one constituted by the container 2 and the lid material. For example, as shown in FIG. 10, the package 4 formed in a bag shape with flexible front and back films 25 and 26 ( The package 1 for microwave processing comprised by sticking the label 5 for a fracture | rupture on one surface of what is called a pouch) may be sufficient.

実施例1
基材として厚さ60μmのポリオレフィン合成紙(商品名:ユポ)を用い、これにアルミニウム蒸着フィルム(ポリエチレンテレフタレートフィルム25μm+アルミ蒸着0.04μm)をドライラミネートしてラベル基材を作成し、アクリル系粘着剤を介して離型紙と積層した。このラベルの基材側より粘着剤まで、カッターナイフで切り込んで、図3(e)に示す略X字状のスリット部を形成することにより、本発明に係る破断用ラベルを得た。尚、ラベルの縦横は20mm×30mmで、1本のスリット部の長さは20mmであり、スリット部の幅は0〜0.1mm程度であった。次に、食品が収容された合成樹脂製成型容器(市販の弁当)をガスバリア性被包フィルム(商品名:エコラップG(厚さ22μm、ナイロン8μm+EVOH2μm+直鎖状低密度ポリエチレン12μm)、日本エコラップ株式会社製)で密封状に包装した包装体の該被包フィルムの表面に、上記破断用ラベルを貼り付け、500Wの電子レンジで加熱した。その結果、被包フィルムにスリット部と略同形状の切れ目が入り、その部分を摘んで被包フィルムを容易に開封することができた。
Example 1
Polyolefin synthetic paper (trade name: YUPO) with a thickness of 60 μm is used as the base material, and an aluminum vapor-deposited film (polyethylene terephthalate film 25 μm + aluminum vapor-deposited 0.04 μm) is dry laminated to create a label base material, which is an acrylic adhesive. It laminated | stacked with the release paper through the agent. The label for break according to the present invention was obtained by cutting from the base material side of the label to the adhesive with a cutter knife to form a substantially X-shaped slit portion shown in FIG. The length and width of the label was 20 mm × 30 mm, the length of one slit part was 20 mm, and the width of the slit part was about 0 to 0.1 mm. Next, a synthetic resin molded container (commercially available lunch box) containing food is placed in a gas barrier encapsulating film (trade name: Eco Wrap G (thickness 22 μm, nylon 8 μm + EVOH 2 μm + linear low density polyethylene 12 μm), Japan Eco Wrap Co., Ltd. The above-mentioned breakage label was attached to the surface of the encapsulated film of the package packaged in a hermetically sealed manner by a company, and heated in a 500 W microwave oven. As a result, the enveloping film had a cut having the same shape as the slit portion, and the encapsulating film could be easily opened by picking that portion.

実施例2
実施例1で用いたものと同じラベル基材を、図4に示す形状に切断した。尚、その寸法は、図4に示すDが15mm、Eが17.5mm、Fが10mmに形成した。また、スリット部は、実施例1と同様にラベル基材をカッターナイフで切り込み、長さ5mmに形成した。このものを、市販の電子レンジ調理用カップスープ(例えばカゴメ(株)製、商品名:野菜スープ)の、蓋フィルムの略中央部に貼着し、500Wの電子レンジで所定時間加熱した。加熱中は容器内から蒸気が噴出し、蓋フィルムが大きく膨張することはなかった。加熱後の蓋フィルムを見ると、スリット部と同じ長さの切れ目が入っていた。
Example 2
The same label substrate as that used in Example 1 was cut into the shape shown in FIG. As shown in FIG. 4, D was 15 mm, E was 17.5 mm, and F was 10 mm. Moreover, the slit part cut | disconnected the label base material with the cutter knife similarly to Example 1, and formed it in length 5mm. This product was attached to a substantially central part of a lid film of a commercially available cup soup for cooking in a microwave oven (for example, product name: vegetable soup manufactured by Kagome Co., Ltd.) and heated in a 500 W microwave oven for a predetermined time. During the heating, steam spouted out of the container, and the lid film did not expand greatly. When the lid film after heating was viewed, a cut having the same length as the slit portion was found.

1…マイクロ波処理用包装体、2…容器、3…被包フィルム、3’…蓋フィルム、4…包装体、5…破断用ラベル、6…基材、61…装飾フィルム、62…基材フィルム、7…導電体層、8…貼着層、9…スリット部、10…剥離用摘み代、12…開封用切れ目、14…穴部、15…開封用摘み片、W…スリット部の隙間幅、21…収容部、22…本体部、23…空間部、24…袋片部、24a…袋片部の一面、25,26…表裏フィルム、27…連結部、28…連通路   DESCRIPTION OF SYMBOLS 1 ... Microwave processing packaging body, 2 ... Container, 3 ... Covering film, 3 '... Cover film, 4 ... Packaging body, 5 ... Breaking label, 6 ... Base material, 61 ... Decoration film, 62 ... Base material Film, 7 ... Conductor layer, 8 ... Adhesive layer, 9 ... Slit part, 10 ... Peeling allowance for peeling, 12 ... Cut for opening, 14 ... Hole part, 15 ... Picking piece for opening, W ... Gap in slit part Width, 21 ... accommodating part, 22 ... body part, 23 ... space part, 24 ... bag piece part, 24a ... one side of bag piece part, 25, 26 ... front and back films, 27 ... connecting part, 28 ... communication path

Claims (2)

被着フィルムが容器に密封状に包装されているマイクロ波処理用包装体であって、
導電体層が積層されたラベル基材と、前記ラベル基材の裏面に設けられた貼着剤層とを有し、前記貼着剤層が設けられた範囲内において前記導電体層にスリット部が形成されている破断用ラベルが、前記被着フィルムの一面の、前記被着フィルムと容器の間に存する間隙に対応して貼着されており、マイクロ波照射時に、前記被着フィルムに前記破断用ラベルのスリット部に沿って切れ目が形成されることを特徴とするマイクロ波処理用包装体。
A package for microwave treatment in which an adherent film is packaged in a sealed manner in a container ,
It has a label base material on which a conductor layer is laminated, and an adhesive layer provided on the back surface of the label base material, and within the range where the adhesive agent layer is provided, a slit portion in the conductor layer Is formed on one surface of the adherent film so as to correspond to a gap existing between the adherent film and the container. A package for microwave processing, wherein a cut is formed along the slit portion of the breaking label.
ラベルの全層に渡って厚み方向に切り込むことによって前記スリット部が形成されている請求項1に記載のマイクロ波処理用包装体 The package for microwave processing according to claim 1, wherein the slit portion is formed by cutting in the thickness direction over the entire layer of the label .
JP2010093695A 2003-09-25 2010-04-15 Package for microwave processing Expired - Lifetime JP5009393B2 (en)

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