JP2008081201A - Food packaging sheet - Google Patents

Food packaging sheet Download PDF

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JP2008081201A
JP2008081201A JP2006266524A JP2006266524A JP2008081201A JP 2008081201 A JP2008081201 A JP 2008081201A JP 2006266524 A JP2006266524 A JP 2006266524A JP 2006266524 A JP2006266524 A JP 2006266524A JP 2008081201 A JP2008081201 A JP 2008081201A
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film
base material
food packaging
packaging sheet
laminated
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JP4907285B2 (en
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Yasuhiro Suzuki
康弘 鈴木
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Daio Paper Corp
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Daio Paper Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a food packaging sheet prepared by laminating a film and a base material in which the base material laminated partly to the film is stuck to the end part without floating delamination and a pinhole or a scratch or the like is not generated. <P>SOLUTION: The film 1 and the base material 2 are laminated by extrusion melt-lamination of a heat melting resin 3 and the base material 2 is laminated partly to the film 1 so that a packaged article can be recognized visually. The base material 2 is preferably heat sealable. Since the base material 2 is laminated partly to the film 1 by extrusion melt-lamination with the heat melting resin 3, the whole surface of the film 1 can be laminated. The food packaging material without floating delamination can be obtained since the base material 2 can be stuck to the end part. Since the whole surface of the food packaging sheet has a double structure of the film 1 and the laminate 3, a defect is hardly generated so as to provide highly closable properties to the food packaging sheet compared with a known example having a single layer part. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本願発明は、パンやおにぎり等の各種食品を包装するための食品包装用シートに関するものである。   The present invention relates to a food packaging sheet for packaging various foods such as bread and rice balls.

一般にパン、おにぎり、菓子等の食品については、透明フィルムによる包装がよく知られている。   In general, for foods such as bread, rice balls and confectionery, packaging with a transparent film is well known.

近年は、包装紙の風合いや印刷によって高級感をもたせるために、特許文献1のように、内側に透明フィルム、外側に和紙調の風合いのある基材を貼り合わせた包装紙も見かけられる。この場合は中身が見えないため、商品によっては本来のイメージと異なるものを購入してしまう恐れがある。   In recent years, a wrapping paper having a transparent film on the inside and a base material with a Japanese paper-like texture on the outside can be seen, as in Patent Document 1, in order to give a high-class feeling to the texture and printing of the wrapping paper. In this case, since the contents cannot be seen, there is a risk of purchasing something different from the original image depending on the product.

このような問題点を解決するのに、例えば、特許文献2、3のように部分的に外側の和紙調基材部分を切り抜き透明フィルムを貼り合せたり、フィルムと基材の端部どうしを貼りあわせることで外側から視認可能とすることができるようにしたものがある。しかし、切り抜いた基材を貼り合わせるにしろ、基材とフィルムを部分的に貼り合わせた後、基材を切り抜くにしろ、作業性は低下する。また、内側に単一フィルムが全面にないため、貼り合わせに使用する接着剤がはみ出しにより食品に接着剤が触れる恐れがある。   In order to solve such problems, for example, as in Patent Documents 2 and 3, the outer Japanese paper-like base material part is partially cut out and a transparent film is pasted, or the film and the base material are pasted to each other. Some have been made visible so that they can be seen from the outside. However, even if the cut base material is pasted together, or after the base material and the film are partly pasted, the workability is lowered even if the base material is cut out. In addition, since there is no single film on the entire surface, there is a possibility that the adhesive used for bonding may come into contact with the food due to the protrusion.

特開2004−262536号公報JP 2004-262536 A 実用新案登録3050153号公報Utility Model Registration No. 30501153 特開平9−2540号公報JP-A-9-2540

フィルムと部分的な基材との貼り合わせの方法として、全巾のフィルムに部分的に接着剤を塗布し、塗布面に和紙調の基材を貼り合わせる、いわゆるドライラミネートによって上記問題点は解決される。しかし、基材に対して接着剤を狭く塗布しないと、基材端部で接着剤の洩れにより巻取時にブロッキングするため、端部が浮いてしまい見栄えが悪くなる。また、接着剤が塗布されていない部分はフィルム単層のみであるため、ピンホールやキズ等の欠陥によって密閉性が低下し、酸素混入により酸化劣化が促進される恐れがある。   As a method of laminating a film and a partial substrate, the above problems are solved by so-called dry lamination, in which an adhesive is partially applied to a full width film and a Japanese paper-like substrate is adhered to the coated surface. Is done. However, if the adhesive is not applied narrowly to the base material, the end portion of the base material is blocked at the time of winding due to the leakage of the adhesive, so that the end portion floats and the appearance is deteriorated. In addition, since the portion where the adhesive is not applied is only a single layer of the film, the sealing performance is lowered due to defects such as pinholes and scratches, and oxidation deterioration may be promoted due to oxygen contamination.

本願発明は、上記のような問題を解決しようとしてなされたもので、フィルムに対して部分的に貼り合わされる基材が端部まで密着し、浮き剥がれのない、しかもピンホールやキズ等による密閉性低下を可及的に防止し得るようにした食品包装用シートを提供することを目的とするものである。   The present invention has been made in order to solve the above-mentioned problems, and the base material partially bonded to the film is in close contact with the end portion, and does not come off and is sealed by pinholes, scratches, or the like. It is an object of the present invention to provide a food packaging sheet capable of preventing deterioration of properties as much as possible.

本願発明の食品包装用シートは、フィルムと基材とが貼り合わされた食品包装用シートにおいて、フィルムと基材の貼り合せは熱溶融性樹脂を押出し溶融ラミネートすることによりなされており、さらに前記基材は被包装物を視認し得るように、フィルムに対して部分的に貼り合わせされていることを基本的特徴とする。この場合において、基材がヒートシール性を有していることが望ましい。  The food packaging sheet of the present invention is a food packaging sheet in which a film and a substrate are bonded together, and the film and the substrate are bonded together by extruding and melting and laminating a hot-melt resin. The material is characterized in that the material is partially bonded to the film so that the object to be packaged can be visually recognized. In this case, it is desirable that the base material has heat sealability.

本願発明の食品包装用シートにおいて使用される基材としては、特に限定するものではないが、針葉樹クラフトパルプ(NKP)、広葉樹クラフトパルプ(LKP)等の化学パルプ;サーモメカニカルパルプ(TMP)、加圧ストーングランドパルプ(PGW)等の機械パルプ;デインキングパルプ(DIP)、ウェストパルプ(WP)等の化学パルプや機械パルプ由来の古紙パルプ等使用できるが、これらのパルプのうちNKPがパルプ強度が強く好ましい。また、不織布繊維やレーヨン繊維等も混抄することができる。さらに、ケナフ等の非木材パルプも使用可能である。   The base material used in the food packaging sheet of the present invention is not particularly limited, but chemical pulp such as softwood kraft pulp (NKP) and hardwood kraft pulp (LKP); thermomechanical pulp (TMP); Mechanical pulp such as pressed stone grand pulp (PGW); chemical pulp such as deinking pulp (DIP) and waist pulp (WP) and waste paper pulp derived from mechanical pulp can be used. Among these pulps, NKP has pulp strength. Strongly preferred. In addition, non-woven fibers and rayon fibers can also be mixed. Furthermore, non-wood pulp such as kenaf can be used.

さらに、ヒートシール性のある合成繊維を基材中に15〜80重量%含有することは、ラミネートとの密着性を高めることができるので好適である。この場合、15重量%未満ではヒートシール性が低下し、80重量%を超えると和紙調の風合いが失われる。   Furthermore, it is preferable to contain 15 to 80% by weight of synthetic fiber having heat sealability in the base material because adhesion with the laminate can be improved. In this case, if it is less than 15% by weight, the heat sealability is lowered, and if it exceeds 80% by weight, the texture of Japanese paper is lost.

合成繊維としては、ポリプロピレン系繊維、ポリエチレン系繊維、低融点ポリエステル系繊維等を使用することができ、融点は110〜150℃が好ましい。110℃未満では抄紙時のドライヤー熱により抄紙マシン内で熱融着することがあり、150℃を超えるとヒートシール性が失われる。   As the synthetic fiber, polypropylene fiber, polyethylene fiber, low melting point polyester fiber and the like can be used, and the melting point is preferably 110 to 150 ° C. If it is less than 110 degreeC, it may heat-seal in a papermaking machine with the dryer heat at the time of papermaking, and if it exceeds 150 degreeC, heat sealability will be lost.

米坪は特に限定しないが、6〜40g/m2、特に8〜30g/m2が好ましい。6g/m2未満では抄造が困難であり、意図しない破れが発生する。40g/m2を超えると、和紙調の風合いが失われ、剛度があるため包装が困難となる。 The rice tsubo is not particularly limited, but is preferably 6 to 40 g / m 2 , particularly preferably 8 to 30 g / m 2 . If it is less than 6 g / m 2 , papermaking is difficult and unintended tearing occurs. If it exceeds 40 g / m 2 , the texture of Japanese paper is lost and the packaging becomes difficult due to its rigidity.

次に、本願発明の食品包装用シートにおいて使用されるフィルムとしては、鎖状低密度ポリエチレン(LLDPE)、高密度ポリエチレン(HDPE)、無延伸ポリプロピレンフィルム(CPP)、延伸ポリプロピレンフィルム(OPP)、ポリエチレンテレフタレート(PET)、ナイロン等のフィルムを使用することができ、包装時に内部の視認が可能な透明性は必要である。また、少なくともフィルムの反ラミネート面はヒートシール性を持つことで包装時に接着剤を使用せず接着させることができるので好ましく、さらに上記のヒートシール性をもつ基材を使用する場合は、フィルム−基材間でヒートシールすることもできるので包装方法のバリエーションが広がる。   Next, as a film used in the food packaging sheet of the present invention, linear low density polyethylene (LLDPE), high density polyethylene (HDPE), unstretched polypropylene film (CPP), stretched polypropylene film (OPP), polyethylene A film such as terephthalate (PET) or nylon can be used, and transparency is required so that the inside can be visually recognized at the time of packaging. In addition, since at least the anti-laminate surface of the film has heat sealability, it can be adhered without using an adhesive at the time of packaging, and it is preferable to use a substrate having the above heat sealability. Since heat sealing can be performed between the substrates, variations in packaging methods are widened.

一般に、物品の包装は170℃〜200℃のヒートシールで行うため、反ラミネート面の融点は130℃〜160℃程度が好ましい。ヒートシール温度との差が大きいと、溶出してヒートシール機を汚すおそれがあるため、特にOPPやCPPのポリプロピレン、低融点ポリエステルが好ましい。厚さは15〜40μmとすることが好ましい。15μm未満では強度不足で意図しない破れが発生し、40μmを超えると、反対に開封が困難となる。   Generally, since the packaging of the article is performed by heat sealing at 170 ° C. to 200 ° C., the melting point of the anti-laminate surface is preferably about 130 ° C. to 160 ° C. If the difference from the heat seal temperature is large, there is a possibility that the heat seal machine may be eluted and soil the heat seal machine, so that OPP or CPP polypropylene or low melting point polyester is particularly preferable. The thickness is preferably 15 to 40 μm. If it is less than 15 μm, unintentional tearing occurs due to insufficient strength, and if it exceeds 40 μm, it is difficult to open.

本願発明の食品包装用シートにおいてはフィルムと基材とを押出し溶融ラミネートにより貼り合わせるが、溶融ラミネートに使用する合成樹脂としては、ポリエチレン、ポリプロピレン等の110〜150℃程度の低融点樹脂であることが好ましい。   In the food packaging sheet of the present invention, the film and the substrate are extruded and bonded together by melt lamination. The synthetic resin used for the melt lamination is a low melting point resin of about 110 to 150 ° C. such as polyethylene and polypropylene. Is preferred.

また、ラミネート機の冷却ロールをミラーロールとすることで高い透明性が得られ、マットロールとすることで半透明性が得られる等、用途によって使い分けることができる。ラミネート厚については特に限定しないが、8〜20μ程度である。   Further, high transparency can be obtained by using a mirror roll as a cooling roll of a laminating machine, and semi-transparency can be obtained by using a mat roll. The laminate thickness is not particularly limited, but is about 8 to 20 μm.

本願発明の食品包装用シートは、熱溶融樹脂を押出し溶融ラミネートすることでフィルムと部分的な基材とを貼り合わせるため、フィルムの全面をラミネートすることが可能である。したがって、基材の端部まで密着されることで、浮き剥がれのない食品包装用シートが得られる。また、全面がフィルム+ラミネートの2重構造であるため、単層部分のある上記公知例のシートと比較して欠陥が発生しにくく、密閉性が高いという効果がある。   The sheet for food packaging of the present invention can laminate the entire surface of the film because the film and the partial substrate are bonded together by extruding and laminating a hot melt resin. Therefore, the food packaging sheet which does not float off is obtained by being in close contact with the end of the base material. In addition, since the entire surface has a double structure of film + laminate, defects are less likely to occur compared to the sheet of the above-described known example having a single layer portion, and there is an effect that the sealing performance is high.

また、基材がヒートシール性を持つ場合は、溶融ラミネート時の熱により基材自体も融着するため、ラミネートとの密着性をさらに高めることができる効果がある。   In addition, when the base material has heat sealability, the base material itself is also fused by heat at the time of melt lamination, and therefore, there is an effect that the adhesiveness with the laminate can be further improved.

以下に本願発明の食品包装用シートの好適な実施例を説明する。   Preferred embodiments of the food packaging sheet of the present invention will be described below.

[実施例]
基材:表1記載の配合率で、米坪17g/m2となるよう抄造した。
[Example]
Base material: Paper was made so as to have a rice basis weight of 17 g / m 2 at the mixing ratio shown in Table 1.

NBKP:針葉樹晒クラフトパルプ
レーヨン:レーヨン繊維(ダイワボウレーヨン社製、品番:コロナSB)
PP :ポリプロピレン繊維(チッソ社製、品番:EPC−CHOP)
PET :ポリエステル繊維(ユニチカファイバー社製、品番:4080)
フィルム:表1記載のフィルムを使用した。
NBKP: Softwood bleached kraft pulp Rayon: Rayon fiber (Daiwabo Rayon Co., product number: Corona SB)
PP: Polypropylene fiber (manufactured by Chisso Corporation, product number: EPC-CHOP)
PET: Polyester fiber (manufactured by Unitika Fiber Co., product number: 4080)
Film: The film described in Table 1 was used.

OPP:2軸延伸ポリプロピレンフィルム(フタムラ化学社製、品番:FOH#25)
CPP:無延伸ポリプロピレンフィルム(フタムラ化学社製、品番:FOH#25)
接着方法:図1及び図2に示すように950mm幅のフィルム基材1に対して250mm幅×3本の基材2,2,2を使用する。
OPP: Biaxially stretched polypropylene film (Futamura Chemical Co., product number: FOH # 25)
CPP: Unstretched polypropylene film (Futamura Chemical Co., product number: FOH # 25)
Adhesion method: As shown in FIG. 1 and FIG. 2, 250 mm width × 3 base materials 2, 2, 2 are used for a 950 mm width film base material 1.

基材同士の間隔は100mmとし、以下の方法で貼り合わせる。   The interval between the substrates is 100 mm, and the substrates are bonded together by the following method.

溶融ラミネート:実施例1〜5では、ポリエチレン樹脂(日本ポリエチレン社製、品番ノバテックLD)を図3に示す押出し溶融ラミネート機にてラミネート厚15μmで基材−フィルムをサンドラミネートした。図1〜2において符号3はラミネート層である。   Melt Lamination: In Examples 1 to 5, a base material-film was sand laminated with a laminate thickness of 15 μm using an extrusion melt laminator shown in FIG. 3 with polyethylene resin (manufactured by Nippon Polyethylene, product number Novatec LD). 1-2, the code | symbol 3 is a laminate layer.

ドライラミネート:比較例1〜2では、図6に示すように、ポリウレタン系接着剤(東洋モートン社製、品番:トモフレックスTM−319)23を乾燥重量3g/m2となるようフィルム21に塗布し、基材22と貼り合わせた。但し、基材端部の接着剤はみだし防止のため、各基材巾の両端(22a,22b)3mmは未塗布とした。 Dry Lamination: In Comparative Examples 1 and 2, as shown in FIG. 6, a polyurethane adhesive (product number: Tomoflex TM-319) 23 manufactured by Toyo Morton Co., Ltd. was applied to the film 21 to a dry weight of 3 g / m 2. And bonded to the base material 22. However, 3 mm of both ends (22a, 22b) of each substrate width was not applied in order to prevent the adhesive at the end of the substrate from sticking out.

加工法
実施例1〜5に示す食品包装用シートは、図3に示すようなラミネート加工装置によって加工される。これを簡単に説明すると、繰出機11から繰り出されたフィルム1は途中でコロナ処理(12)され、冷却ロール13通過時に押出機14のTダイ15からフィルム1全幅に亘って溶融ラミネート(ポリエチレン樹脂)を塗布される。一方、基材繰出機16からは3本の帯状基材2が繰り出され、これらの基材2が冷却ロール13周面上でフィルム1と接着される。フィルム1と基材2のラミネート帯状シート体4は欠陥検出機17を経てピンホールやシミなどの有無を検査された後、巻取機18で巻き取られて製品とされる。
Processing Method The food packaging sheets shown in Examples 1 to 5 are processed by a laminating apparatus as shown in FIG. Briefly, the film 1 fed out from the feeding machine 11 is subjected to corona treatment (12) in the middle, and melt-laminated (polyethylene resin) from the T die 15 of the extruder 14 over the entire width of the film 1 when passing through the cooling roll 13. ) Is applied. On the other hand, three belt-like base materials 2 are fed from the base material feeder 16, and these base materials 2 are bonded to the film 1 on the circumferential surface of the cooling roll 13. The laminated belt-like sheet body 4 of the film 1 and the substrate 2 is inspected for the presence of pinholes or spots through a defect detector 17 and then wound up by a winder 18 to obtain a product.

なお、図1〜2に例示の食品包装用シートは、たとえば、帯状シート体4の中央線C−C線で二分された後、適当な長さに裁断されて各種食品の包装用シートS(図4、図5参照)として使用される。食品を包装する態様としては、図4に示すように食品Fを包んだあと、フィルム1の外面1A,1A同士をヒートシールにより接合する方法(いわゆる、合掌貼り)と、図5に示すようにフィルム1の外面1Aと基材2の外面2Aとをヒートシールにより接合する方法(いわゆる、封筒貼り)がある。   The food packaging sheet illustrated in FIGS. 1 and 2 is, for example, bisected by the center line CC line of the belt-like sheet body 4 and then cut to an appropriate length to be used for packaging various foods S ( 4 and 5). As a mode of packaging food, after wrapping food F as shown in FIG. 4, a method of joining the outer surfaces 1A and 1A of the film 1 by heat sealing (so-called “gap sticking”), and as shown in FIG. There is a method of joining the outer surface 1A of the film 1 and the outer surface 2A of the substrate 2 by heat sealing (so-called envelope pasting).

Figure 2008081201
Figure 2008081201

評価:貼り合わせ後のシートについて評価した。   Evaluation: The sheet after pasting was evaluated.

高級感:和紙調の度合いで評価した。   High quality: Evaluated by the degree of Japanese paper.

◎:繊維の不均一性があり、和紙調の高級感がある。   A: There is a non-uniformity of fibers, and there is a sense of quality of Japanese paper.

〇:和紙調の雰囲気がある。   ○: There is a Japanese paper-like atmosphere.

見栄え:端部の浮き、フィルム−基材間の密着性で評価した。   Appearance: Evaluated by float at end and adhesion between film and substrate.

◎:基材の端部まで密着しており見栄えがよく、手で剥すこともできない。   (Double-circle): It adheres to the edge part of a base material, its appearance is good, and it cannot peel off by hand.

〇:故意に手で剥さない限り、端部は密着されている。   ◯: The ends are in close contact unless intentionally peeled off by hand.

×:基材端部が浮いており、見栄えが悪い。   X: The edge part of a base material has floated and its appearance is bad.

キズ:シートについて、基材のない透明部分を50倍の拡大鏡で見て評価した。   Scratch: The sheet was evaluated by observing a transparent portion having no base material with a 50 × magnifier.

〇:キズはあるものの、貫通はされていなかった。   ○: Although there were scratches, no penetration was made.

×:貫通しているキズが見られた。   X: The flaw which penetrated was seen.

開封時カット性:シートをヒートシールにより袋状にしてから、開封して評価した。   Cutability at opening: The sheet was formed into a bag shape by heat sealing, and then opened and evaluated.

◎:開封時にフィムの伸びが全くなく、余分な力を使わずに開封できた。   A: There was no expansion of the fim at the time of opening, and it could be opened without using extra force.

〇:開封時にフィルムの伸びがわずかに見られたが、余分な力は感じなかった。   ◯: Although the film was slightly stretched when opened, no extra force was felt.

総合評価
表1からも明らかなように、本願発明の実施例1〜5にかかる食品包装用シートは、いずれも高級感、見栄え、キズの有無、開封時カット性等において◎又は〇評価が得られ、食品包装用シートとしてすぐれたものであった。これに対して比較例1〜2にかかる食品包装用シートは基材それ自体のもつ高級感はあるものの、見栄え及びキズの有無においていずれも×評価であり、実用に適しないものであった。
As is clear from the comprehensive evaluation table 1, the food packaging sheets according to Examples 1 to 5 of the present invention all have ◎ or 〇 evaluations in terms of luxury, appearance, scratches, openness, etc. It was excellent as a sheet for food packaging. On the other hand, although the food packaging sheet according to Comparative Examples 1 and 2 has a high-class feeling of the base material itself, both the appearance and the presence or absence of scratches were evaluated as x and were not suitable for practical use.

本願発明の実施例にかかる食品包装用シートの平面図である。It is a top view of the sheet | seat for food packaging concerning the Example of this invention. 図1の食品包装用シートのII−II断面図である(シートの厚み方向に拡大している)。It is II-II sectional drawing of the sheet | seat for food packaging of FIG. 1 (expanding in the thickness direction of the sheet | seat). 図1及び図2に示す食品包装用シートを加工するためのラミネート加工装置の説明図である。It is explanatory drawing of the laminating apparatus for processing the sheet | seat for food packaging shown in FIG.1 and FIG.2. 図1及び図2に示す食品包装用シートによる食品包装状態図である。It is a food packaging state figure by the sheet | seat for food packaging shown in FIG.1 and FIG.2. 図1及び図2に示す食品包装用シートによる他の食品包装状態図である。It is another food packaging state figure by the food packaging sheet | seat shown in FIG.1 and FIG.2. 比較例の食品包装用シートにおけるフィルムと基材の接着状態説明図である(シートの厚み方向に拡大している)。It is explanatory drawing of the adhesion state of the film and base material in the sheet | seat for food packaging of a comparative example (expanding in the thickness direction of a sheet | seat).

符号の説明Explanation of symbols

1はフィルム、2は基材、3は熱溶融性樹脂、4は帯状シート体、Fは食品、Sは食品包装用シート   DESCRIPTION OF SYMBOLS 1 is a film, 2 is a base material, 3 is a thermomeltable resin, 4 is a strip | belt-shaped sheet | seat body, F is a foodstuff, S is a sheet | seat for food packaging

Claims (2)

フィルムと基材とが貼り合わされた食品包装用シートであって、前記フィルムと基材の貼り合せは熱溶融性樹脂を押出し溶融ラミネートすることによりなされており、前記基材は被包装物を視認し得るように前記フィルムに対して部分的に貼り合わせされていることを特徴とする食品包装用シート。   A food packaging sheet in which a film and a base material are bonded together, and the film and the base material are bonded together by extruding and laminating a heat-meltable resin, and the base material visually recognizes an object to be packaged. A food packaging sheet characterized by being partially bonded to the film. 前記基材がヒートシール性を有していることを特徴とする請求項1記載の食品包装用シート。   The food packaging sheet according to claim 1, wherein the base material has heat sealability.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012051644A (en) * 2010-08-03 2012-03-15 Dainippon Printing Co Ltd Lid material

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0647868A (en) * 1991-05-14 1994-02-22 Takumi Yoshihara Film for packing bag and production thereof
JPH07172474A (en) * 1993-12-17 1995-07-11 Dainippon Printing Co Ltd Sheet used in forming bone holding bag for preparing soup, and the bag
JPH08182613A (en) * 1994-12-28 1996-07-16 Sansho Kk Filtration vessel for filtrating coffee, filtration device using the vessel, and method for use thereof
JPH11291371A (en) * 1998-04-09 1999-10-26 Asahi Chem Ind Co Ltd Food packaging sheet

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0647868A (en) * 1991-05-14 1994-02-22 Takumi Yoshihara Film for packing bag and production thereof
JPH07172474A (en) * 1993-12-17 1995-07-11 Dainippon Printing Co Ltd Sheet used in forming bone holding bag for preparing soup, and the bag
JPH08182613A (en) * 1994-12-28 1996-07-16 Sansho Kk Filtration vessel for filtrating coffee, filtration device using the vessel, and method for use thereof
JPH11291371A (en) * 1998-04-09 1999-10-26 Asahi Chem Ind Co Ltd Food packaging sheet

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012051644A (en) * 2010-08-03 2012-03-15 Dainippon Printing Co Ltd Lid material

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