JPH06340036A - Packing material for food container and production thereof - Google Patents
Packing material for food container and production thereofInfo
- Publication number
- JPH06340036A JPH06340036A JP4325899A JP32589992A JPH06340036A JP H06340036 A JPH06340036 A JP H06340036A JP 4325899 A JP4325899 A JP 4325899A JP 32589992 A JP32589992 A JP 32589992A JP H06340036 A JPH06340036 A JP H06340036A
- Authority
- JP
- Japan
- Prior art keywords
- resin layer
- paper
- active substance
- porous active
- inorganic porous
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Landscapes
- Wrappers (AREA)
- Laminated Bodies (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、紙やポリオレフィン系
樹脂層の臭気や味が食品に移行するのを防止する食品容
器用包装材料及びその製造方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a packaging material for food containers which prevents the odor and taste of paper or a polyolefin resin layer from transferring to foods, and a method for producing the same.
【０００２】[0002]
【従来の技術】近年、ワンウエイの食品容器において
は、紙とポリオレフィン系樹脂を主体とした積層材料が
多用されている。例えば、牛乳やジュース用等の紙容器
においては、通常、低密度ポリエチレン／紙／低密度ポ
リエチレン（以下、低密度ポリエチレンをＬＤＰＥと略
記する。）という構成を採り、特にロングライフ用のガ
スバリヤー性を必要とする製品には、アルミ箔、ポリエ
ステル系樹脂層、エチレン−ビニルアルコール共重合体
樹脂層などを上記構成に加えている。また、水分の多い
冷凍食品の包装容器でも、同様の構成が採用されてい
る。さらに、ジュース類などの自動販売機において使用
される紙カップでは、紙／ＬＤＰＥという構成が採られ
ている。これらの構成は最内面（内容物である食品に接
する面）側にＬＤＰＥを配し、ヒートシール加工によっ
て食品容器としている。しかし乍ら、これらの食品容器
用包装材料の最内面側ＬＤＰＥ層は、ほとんど押出ラミ
ネート法によって形成されているため、押出ラミネート
加工時の３００℃前後の高温によるＬＤＰＥの分解及び
酸化が起こり、これらの分解物や酸化物が食品へ移行
し、異臭や味の低下を引き起こす。押出ラミネート法は
紙と他材料との接着も同時に行なうため、ＬＤＰＥの分
解をおさえるような低温加工はできない。2. Description of the Related Art In recent years, in one-way food containers, a laminated material mainly composed of paper and a polyolefin resin has been widely used. For example, a paper container for milk or juice usually has a structure of low-density polyethylene / paper / low-density polyethylene (hereinafter, low-density polyethylene is abbreviated as LDPE), and has a gas barrier property especially for long life. Aluminum foil, a polyester resin layer, an ethylene-vinyl alcohol copolymer resin layer, and the like are added to the above-mentioned constitution in the products requiring the above. The same configuration is also adopted in a frozen food packaging container having a high water content. Further, a paper cup used in a vending machine for juice or the like has a structure of paper / LDPE. In these structures, LDPE is arranged on the innermost surface side (the surface in contact with the food as the content) and heat sealed to form a food container. However, since the innermost LDPE layer of these packaging materials for food containers is mostly formed by the extrusion laminating method, decomposition and oxidation of LDPE occur at a high temperature of about 300 ° C. during extrusion laminating, and Decomposition products and oxides of the product migrate to food, causing offensive odors and deterioration of taste. Since the extrusion laminating method simultaneously adheres the paper and other materials, it cannot be processed at a low temperature that suppresses the decomposition of LDPE.
【０００３】また、使用されている紙やその他の材料の
臭気もＬＤＰＥ層を通して食品へ移行し、異臭や、味の
低下の原因となる。紙の臭気は抄紙時の水質や配合填料
などと保管・運搬時の外部からの臭気移行が考えられる
ので、不確定な要素が含まれる。そこで、本発明者らは
紙やＬＤＰＥから食品へ移行する物質をつきとめるた
め、ＬＤＰＥ／紙／ＬＤＰＥの構成の容器にミネラルウ
ォーターを充填し、経日後、このミネラルウォーターへ
の溶出物を調べた結果、フルフラール、２−エチルヘキ
サノール、フラン、メタノール、ドデカナール、ジエチ
レングリコールジブチルエーテル、フェノールが検出さ
れた。また、これら物質は水溶性であるが、これらとは
別に油溶性物質も食品の臭気や、味の低下を引き起こし
ているものと推定される。一方、これらの異臭、味の低
下の対策として、従来下記の方法が提案されている： （Ａ）内面ＬＤＰＥの材料を低臭グレードに替える。 （Ｂ）共押出ラミネート法により、食品に接する最内面
層ＬＤＰＥの加工温度を下げる。 （Ｃ）最内面層ＬＤＰＥにＬＤＰＥフィルム（インフレ
ーション法で低温加工したもの）を貼り合わせる。 （Ｄ）アルミ箔、ポリエステルフィルム、エチレン−ビ
ニルアルコール共重合体樹脂、共重合ポリエステル樹
脂、ナイロン系樹脂などバリヤー性材料又は臭気バリヤ
ー材料（収着防止を含む）を使用する。Further, the odor of the used paper and other materials is also transferred to the food through the LDPE layer, which causes an offensive odor and deterioration of taste. The odor of paper includes uncertain factors because it is considered that water quality and compounding fillers at the time of papermaking and odor transfer from outside during storage and transportation are considered. Therefore, the present inventors filled a container of LDPE / paper / LDPE with mineral water in order to identify substances that migrate from paper or LDPE to food, and after a lapse of time, examined elution substances into this mineral water. , Furfural, 2-ethylhexanol, furan, methanol, dodecanal, diethylene glycol dibutyl ether, and phenol were detected. Further, although these substances are water-soluble, it is presumed that, in addition to these substances, oil-soluble substances also cause odor and deterioration of taste of foods. On the other hand, the following methods have been conventionally proposed as measures against these offensive odors and deterioration of taste: (A) The material of the inner surface LDPE is replaced with a low odor grade. (B) By the coextrusion laminating method, the processing temperature of the innermost layer LDPE in contact with food is lowered. (C) An LDPE film (processed at low temperature by inflation method) is attached to the innermost layer LDPE. (D) A barrier material or an odor barrier material (including sorption prevention) such as an aluminum foil, a polyester film, an ethylene-vinyl alcohol copolymer resin, a copolymer polyester resin, or a nylon resin is used.
【０００４】[0004]
【発明が解決しようとする課題】しかるに、上記
（Ａ）、（Ｂ）は効果が小さく、また（Ｃ）では貼合わ
せ用接着剤の残溶剤の問題や工程数が増えるという欠点
がある。さらに（Ａ）、（Ｂ）、（Ｃ）共に、紙臭気の
食品への移行防止には効果がない。また（Ｄ）では紙臭
や外部から侵入する臭気は防止できるが、最内面層ＬＤ
ＰＥの分解臭、酸化臭は依然として残ることになる。ま
た、これらの材料は、価格が高いという問題がある。そ
こで、（Ｃ）と（Ｄ）を組み合わせる提案もあるが、工
程数も増え、価格も高くならざるを得ない。However, the above-mentioned (A) and (B) have a small effect, and (C) has a problem that the problem of the residual solvent of the laminating adhesive and the number of steps are increased. Furthermore, none of (A), (B), and (C) is effective in preventing the transfer of paper odor to food. In addition, in (D), paper odor and odors entering from the outside can be prevented, but the innermost layer LD
The decomposition and oxidation odors of PE will still remain. Further, these materials have a problem of high price. Therefore, there is a proposal to combine (C) and (D), but the number of processes is increased and the price is inevitably increased.
【０００５】[0005]
【課題を解決するための手段】本発明者らは、上記課題
を解決するべく鋭意研究を重ねた結果、紙と熱可塑性樹
脂層を含む多層構成の包装材料において、少なくとも紙
と最内面樹脂層との間のポリオレフィン系樹脂層に無機
系多孔性活性物質を含有させることにより、上記課題が
解決されることを見出し本発明を完成した。As a result of intensive studies to solve the above problems, the inventors of the present invention have found that at least the paper and the innermost resin layer in a packaging material having a multi-layer structure including the paper and the thermoplastic resin layer. The present invention has been completed by finding that the above problems can be solved by including an inorganic porous active substance in the polyolefin resin layer between and.
【０００６】即ち、本発明の第１は、紙と熱可塑性樹脂
層とを含む多層構成の包装材料において、少なくとも紙
と最内面樹脂層との間のポリオレフィン系樹脂層に無機
系多孔性活性物質を含有させたことを特徴とする食品容
器用包装材料を、本発明の第２は、紙と熱可塑性樹脂層
とを含む多層構成の包装材料を製造するに際し、少なく
とも紙と最内面樹脂層との間に無機系多孔性活性物質を
含有したポリオレフィン系樹脂層を形成させることを特
徴とする食品容器用包装材料の製造方法をそれぞれ内容
とするものである。That is, the first aspect of the present invention is, in a packaging material having a multi-layered structure including a paper and a thermoplastic resin layer, at least in the polyolefin resin layer between the paper and the innermost resin layer, an inorganic porous active substance is used. The second aspect of the present invention is a packaging material for food containers, characterized in that it contains at least a paper and an innermost resin layer at the time of producing a multi-layered packaging material including a paper and a thermoplastic resin layer. And a polyolefin-based resin layer containing an inorganic porous active substance formed between the two.
【０００７】 〔発明の詳細な説明〕本発明に用いられる無機系多孔性
活性物質としては、紙や樹脂層から発する異臭や異味の
原因物質を吸着除去するもので、一般に脱臭剤と云われ
る範疇にはいるが、押出ラミネートの高温に耐え、優れ
た吸着作用を有するものが用いられる。たとえば、活性
炭、活性白土、酸性白土、ゼオライト（天然、合成）、
ベントナイト、セピオライト、シリカ、ＭｇＯとＳｉＯ
2 との混合物などの合成法多孔物質などが挙げられる。
これらは包装材料の構成や製缶方法の種類により適宜選
択され、単独で又は２種以上混合して用いられる。該活
性物質が食品に接触する場合は、食品添加物として認可
されている物質を選択する必要があるが、その他の場合
は、性能、価格、外観（色等）等により決定される。DETAILED DESCRIPTION OF THE INVENTION The inorganic porous active substance used in the present invention is one which adsorbs and removes a causative substance of offensive odor or taste generated from a paper or resin layer, and is generally called a deodorant. However, the one that withstands the high temperature of the extrusion laminate and has an excellent adsorption action is used. For example, activated carbon, activated clay, acid clay, zeolite (natural, synthetic),
Bentonite, sepiolite, silica, MgO and SiO
Examples include synthetic porous materials such as mixtures with 2 .
These are appropriately selected depending on the constitution of the packaging material and the type of can making method, and they may be used alone or in combination of two or more. When the active substance comes into contact with food, it is necessary to select a substance approved as a food additive, but in other cases, it is determined by performance, price, appearance (color etc.) and the like.
【０００８】無機系多孔性活性物質の粒径は、０．１〜
１０μｍの範囲が好適である。この範囲外では押出ラミ
ネートする場合の成膜性が悪くなる。The particle size of the inorganic porous active substance is 0.1 to 0.1.
A range of 10 μm is suitable. If it is out of this range, the film forming property in the case of extrusion laminating becomes poor.
【０００９】本発明において、無機系多孔性活性物質を
含有させる層については、上記のとおり、異臭や異味の
原因物質は、その一つは、紙や外部から侵入するから、
無機系多孔性活性物質含有層は紙よりも内側でなければ
ならない。また、該活性物質を含有させる層を最内層と
して使用することも考えられるが、食品に直接接するた
め該活性物質の種類が限定され、また製缶時のヒートシ
ール性も低下するため最内層としての使用はできない。
以上のことから、無機系多孔性活性物質を含有させる層
は、紙と最内面樹脂層との間に形成させることが必要で
ある。さらに、該活性物質を含有させる層は最内面樹脂
層に接するように設けることが好ましい。なぜなら、最
内面樹脂層の分解物や酸化物を該活性物質が効果的に吸
着除去できるからである。In the present invention, in the layer containing the inorganic porous active substance, as described above, one of the substances causing the offensive odor or the offensive taste enters from the paper or the outside,
The inorganic porous active substance-containing layer must be inside the paper. It is also conceivable to use a layer containing the active substance as the innermost layer, but the type of the active substance is limited because it is in direct contact with foods, and as the innermost layer, the heat-sealing property during can making is also reduced. Cannot be used.
From the above, it is necessary to form the layer containing the inorganic porous active substance between the paper and the innermost surface resin layer. Further, the layer containing the active substance is preferably provided so as to be in contact with the innermost resin layer. This is because the active substance can effectively adsorb and remove the decomposition products and oxides of the innermost resin layer.
【００１０】次に、無機系多孔性活性物質を含有させる
樹脂は、異臭、異味の原因物質を透過し易いポリオレフ
ィン系樹脂層が使用される。即ち、無機系多孔性活性物
質は、それが配合される樹脂を通して異臭、異味の原因
物質を吸着除去するので、例えばバリヤー性の樹脂中に
含有させた場合は、外部からの原因物質は遮蔽するが、
最内面側樹脂層からの原因物質はバリヤー性樹脂が遮蔽
するため、無機系多孔性活性物質により吸着除去できな
い。ポリオレフィン系樹脂は、原因物質を透過し易い上
に、押出ラミネートし易い点でも好適である。ポリオレ
フィン系樹脂としては、ポリエチレン、ポリプロピレン
などが好ましく、単独又は混合物として用いられる。Next, as the resin containing the inorganic porous active substance, a polyolefin resin layer is used, which easily permeates substances causing offensive odor and taste. That is, since the inorganic porous active substance adsorbs and removes the causative substances having offensive odors and tastes through the resin with which it is blended, for example, when contained in a barrier resin, causative substances from the outside are shielded. But,
The causative substance from the innermost resin layer cannot be adsorbed and removed by the inorganic porous active substance because the barrier resin blocks the causative substance. The polyolefin-based resin is preferable because it is easy to permeate the causative substance and is easily extrusion-laminated. As the polyolefin resin, polyethylene, polypropylene and the like are preferable, and they are used alone or as a mixture.
【００１１】無機系多孔性活性物質の配合量は、ポリオ
レフィン系樹脂１００重量部に対し１〜２５重量部の範
囲が好適である。１重量部未満では原因物質の吸着除去
効果が不充分であったり、また経時によりその効果が減
少する等の不都合が生じ、一方、２５重量部を越えると
押出加工性が悪くなり成膜し難くなる。本発明における
熱可塑性樹脂及び紙については特に制限はなく、従来の
ものが用いられる。The content of the inorganic porous active substance is preferably 1 to 25 parts by weight based on 100 parts by weight of the polyolefin resin. If the amount is less than 1 part by weight, the effect of adsorbing and removing the causative substance may be insufficient, or the effect may be reduced over time. On the other hand, if the amount exceeds 25 parts by weight, the extrusion processability may be deteriorated and film formation may be difficult. Become. The thermoplastic resin and paper in the present invention are not particularly limited, and conventional ones can be used.
【００１２】本発明における食品容器用包装材料の好ま
しい製造方法について述べると、まず無機系多孔性活性
物質配合ポリオレフィン系樹脂は、該活性物質を真空乾
燥し、ベント式混練機にてポリオレフィン系樹脂と混練
し、脱気した後ペレット化する。混練機は２軸押出式混
練機（同方向、異方向）、ファーレル式２段押出機、Ｋ
ＣＫ混練押出機などの各種押出機を使用できるが、該活
性物質に吸着した水分、臭気物質を充分除去した状態で
ペレット化することが重要で、水分は好ましくは５００
ppm 以下に調製する。５００ppm を越えると、押出ラミ
ネート加工時に発泡現象が起こり、成膜困難となる傾向
がある。A preferred method for producing a packaging material for food containers according to the present invention will be described. First, an inorganic porous active substance-containing polyolefin resin is dried in vacuum and the polyolefin resin is mixed with a vent type kneader to form a polyolefin resin. Knead, deaerate and pelletize. The kneading machine is a twin-screw extrusion kneading machine (in the same direction or in different directions), a Farrell type two-stage extruder, K
Various extruders such as a CK kneading extruder can be used, but it is important to pelletize in a state in which moisture and odor substances adsorbed on the active substance are sufficiently removed, and the moisture content is preferably 500.
Adjust to below ppm. If it exceeds 500 ppm, a foaming phenomenon occurs during extrusion lamination processing, and film formation tends to be difficult.
【００１３】次に、上記の如くして得られた無機系多孔
性活性物質配合ポリオレフィン系樹脂を押出ラミネート
機に投入し、被着体の種類によって決まる樹脂温度で押
出し加工を行なう。押出機はＴダイ押出機を用いて通常
のラミネートを行なえばよい。この時、無機系多孔性活
性物質配合ポリオレフィン系樹脂と、それに接する最内
面樹脂とを共押出しすることもできる。Then, the inorganic porous active substance-containing polyolefin resin obtained as described above is put into an extrusion laminating machine and extruded at a resin temperature determined by the type of adherend. As the extruder, a T-die extruder may be used to perform ordinary lamination. At this time, it is also possible to coextrude the inorganic porous active substance-containing polyolefin resin and the innermost surface resin in contact therewith.
【００１４】本発明の包装材料の実施態様を図１〜図３
に示す。図１は紙１と、無機系多孔性活性物質含有ポリ
オレフィン系樹脂層２と、最内面側樹脂層３とが順次積
層された構成からなる。図２は、図１に示した構成にお
いて、紙１の表面に外面側樹脂層４を積層した構成から
なる。図３は、紙１の両面に無機系多孔性活性物質含有
ポリオレフィン系樹脂層２、２を配し、更にこれらの表
面に最内面側樹脂層３、外面側樹脂層４をそれぞれ積層
した構成からなる。An embodiment of the packaging material of the present invention is shown in FIGS.
Shown in. FIG. 1 has a configuration in which a paper 1, a polyolefin resin layer 2 containing an inorganic porous active substance, and an innermost resin layer 3 are sequentially laminated. FIG. 2 shows a configuration in which the outer surface side resin layer 4 is laminated on the surface of the paper 1 in the configuration shown in FIG. FIG. 3 shows a structure in which inorganic porous active substance-containing polyolefin resin layers 2 and 2 are arranged on both sides of a paper 1, and an innermost surface side resin layer 3 and an outer surface side resin layer 4 are respectively laminated on these surfaces. Become.
【００１５】[0015]
【実施例】以下、本発明を実施例に基づいて更に詳細に
説明するが、本発明はこれらに限定されるものではな
い。 実施例１ 無機系多孔性活性物質として「ミズカライフＦ−１Ｓ
（水澤化学工業株式会社製；酸化マグネシウムと二酸化
ケイ素の混合物、平均粒径＝５μｍ、比重＝２．６ｇ／
cm3 ）」を１００℃の温度で２時間真空乾燥した。次
に、ポリオレフィン樹脂として「ミラソンＭ−１６ｐ
（三井石油化学工業株式会社製；ＬＤＰＥ、ＭＩ＝３．
７ｇ／１０分、密度＝０．９２３ｇ／cm3 ）」を９０重
量部と上記真空乾燥した「ミズカライフ」１０重量部と
をドライブレンドし、ＫＣＫ連続混練押出機（１２０×
２−６５ＶＥＸ）に投入し、ベント穴で脱気しながら出
口温度２１０℃にて混練し、水冷後ペレット化した。The present invention will be described in more detail based on the following examples, but the invention is not intended to be limited thereto. Example 1 As an inorganic porous active substance, "Mizuka Life F-1S"
(Manufactured by Mizusawa Chemical Co., Ltd .; mixture of magnesium oxide and silicon dioxide, average particle size = 5 μm, specific gravity = 2.6 g /
cm 3 ) ”was vacuum dried at a temperature of 100 ° C. for 2 hours. Next, as a polyolefin resin, "Mirason M-16p
(Mitsui Petrochemical Industry Co., Ltd .; LDPE, MI = 3.
7 g / 10 min, density = 0.923 g / cm 3 ) "and 90 parts by weight of the above-mentioned vacuum dried" Mizuka Life "are dry blended, and a KCK continuous kneading extruder (120 x
2-65 VEX), the mixture was kneaded at an outlet temperature of 210 ° C. while being degassed through a vent hole, cooled with water and pelletized.
【００１６】次に、ペレット化された混練物をＴダイ押
出機（スクリュー径＝４０mm、Ｌ／Ｄ＝２２）に投入
し、ホッパードライヤーにて除湿乾燥しながら樹脂温度
３１５℃で押出し、あらかじめコロナ放電処理を行なっ
た紙（ウエアハウザー製ミルクカートン用原紙、坪量＝
３０５ｇ／ｍ2 ）のコロナ放電処理面へ２０μｍの厚さ
でラミネート加工し、「ミズカライフ」含有ＬＤＰＥ層
が紙の両面にラミネートされた積層物を得た。この「ミ
ズカライフ」含有ＬＤＰＥ層の両表面に「ミラソンＭ−
１６ｐ」をＴダイ押出機を使って樹脂温度３１５℃で押
出し、２０μｍの厚さでラミネート加工を行ない、本発
明の食品容器用包装材料を作製した。Next, the pelletized kneaded product was put into a T-die extruder (screw diameter = 40 mm, L / D = 22) and extruded at a resin temperature of 315 ° C. while being dehumidified and dried by a hopper dryer, and was previously subjected to corona. Discharged paper (Wearhauser milk carton base paper, basis weight =
305 g / m 2 ) of the corona discharge treated surface was laminated at a thickness of 20 μm to obtain a laminate in which the “Mizuka Life” -containing LDPE layer was laminated on both sides of the paper. "Mirason M-" is formed on both surfaces of this "Mizuka Life" -containing LDPE layer.
16p ”was extruded using a T-die extruder at a resin temperature of 315 ° C. and laminated at a thickness of 20 μm to prepare a packaging material for food containers of the present invention.
【００１７】実施例２ 実施例１と同様にして「ミズカライフ」含有ＬＤＰＥ層
（２０μｍ）と「ミラソンＭ−１６ｐ」層（２０μｍ）
前記ミルクカートン用原紙の片側（内面側）に配し、反
対面（外面側）に「ミラソンＭ−１６ｐ」をＴダイ押出
機を使って樹脂温度３１５℃で押出し、４０μｍの厚さ
でラミネート加工を行ない、本発明の食品容器用包装材
料を作製した。Example 2 In the same manner as in Example 1, "Mizuka Life" -containing LDPE layer (20 μm) and “Mirason M-16p” layer (20 μm)
It is placed on one side (inner surface side) of the milk carton base paper and "Mirason M-16p" is extruded on the other surface (outer surface side) at a resin temperature of 315 ° C using a T-die extruder and laminated to a thickness of 40 µm. Then, the packaging material for a food container of the present invention was produced.
【００１８】実施例３ 実施例１において、無機系多孔性活性物質として「シル
トンＬＰ−７５Ｃ（水澤化学工業株式会社製；酸性白
土、平均粒径＝２．８０μｍ）」を用いた他は実施例１
と同様にして、本発明の食品容器用包装材料を作製し
た。Example 3 Example 1 was the same as Example 1 except that "Silton LP-75C (manufactured by Mizusawa Chemical Co., Ltd .; acid clay, average particle size = 2.80 μm)" was used as the inorganic porous active substance. 1
A packaging material for food containers of the present invention was produced in the same manner as in.
【００１９】比較例１ 実施例１において、「ミズカライフ」の代わりに「ホワ
イトンＳＢ（赤）（水澤化学工業株式会社製；重質炭酸
カルシウム、平均粒径＝１．８０μｍ、比重＝２．７ｇ
／cm3 ）」を用いた他は実施例１と同様にして食品容器
用包装材料を作製した。Comparative Example 1 In Example 1, instead of “Mizuka Life”, “Whiten SB (red) (manufactured by Mizusawa Chemical Co., Ltd .; heavy calcium carbonate, average particle size = 1.80 μm, specific gravity = 2. 7 g
/ Cm 3 ) ”was used and a packaging material for food containers was produced in the same manner as in Example 1.
【００２０】比較例２ 実施例２において、材料の内面側と外面側との樹脂層を
逆にした他は実施例２と同様にして食品容器用包装材料
を作製した。Comparative Example 2 A packaging material for food containers was produced in the same manner as in Example 2 except that the resin layers on the inner surface side and the outer surface side of the material were reversed.
【００２１】比較例３ 「ミラソンＭ−１６ｐ」をＴダイ押出機を使って樹脂温
度３１５℃で押出し、あらかじめコロナ放電処理を行な
った前記ミルクカートン用原紙のコロナ放電処理面に４
０μｍの厚さでラミネート加工した。同上操作をミルク
カートン用原紙の反対面にも行ない、食品容器用包装材
料を作製した。Comparative Example 3 "Mirason M-16p" was extruded using a T-die extruder at a resin temperature of 315 ° C., and a corona discharge treated surface of the milk carton base paper which had been subjected to a corona discharge treatment in advance was used.
It was laminated to a thickness of 0 μm. The same operation was carried out on the opposite side of the milk carton base paper to produce a packaging material for food containers.
【００２２】「パックチェックテスト」 テストサンプル調製方法：実施例１〜３及び比較例１〜
３で作製した材料をＡ４判サイズにカットし、中央から
折曲げてＡ５判のサイズにする。このＡ５判のサイズの
３辺の合わせ面のうち２辺をヒートシール機（温度＝１
５０℃、圧力＝７kg／cm2 、圧着時間＝５sec ）でヒー
トシールして袋を造り、中にミネラルウオーターを５０
ml注入した後、開いていた残りの一片もヒートシール機
でヒートシールする。このミネラルウオーターのパック
を冷蔵庫に入れ、３日後に開封する。 評価方法：パックからミネラルウオーターを注ぎ出し、
臭気及び味を官能テストより評価する。６名のパネラー
の評点の合計点を平均し、その平均点が０〜１点未満の
場合は×、１〜２点未満の場合は△、２〜３点未満の場
合は〇、３点の場合は◎とする。以上のパックチェック
テスト結果を表１に示した。"Pack Check Test" Test Sample Preparation Method: Examples 1-3 and Comparative Examples 1-
The material prepared in 3 is cut into A4 size and bent from the center to obtain A5 size. Of the three mating surfaces of this A5 size, two sides are heat-sealed (temperature = 1
Heat-seal at 50 ° C, pressure = 7 kg / cm 2 , pressure-bonding time = 5 sec to make a bag, with 50 parts mineral water inside.
After injecting ml, heat-seal the remaining open piece with a heat-sealing machine. Put this mineral water pack in the refrigerator and open it 3 days later. Evaluation method: Pour out mineral water from the pack,
Odor and taste are evaluated by sensory tests. Average the total score of the 6 panelists, if the average score is 0 to less than 1 point x, if it is less than 1 to 2 points △, if less than 2 to 3 points 0, 3 points In case of ◎. The above pack check test results are shown in Table 1.
【００２３】[0023]
【表１】 [Table 1]
【００２４】実施例１〜３と比較例１の比較から、通常
の無機系フィラーでは臭気・味を悪くする原因物質を吸
着除去する効果はなく、一方、本発明で用いる無機系多
孔性活性物質は優れた吸着除去作用を発揮することが分
かる。また、実施例２と比較例２の比較から、無機系多
孔性活性物質を含有するポリオレフィン層は、紙よりも
内面側でなければ効果が発現しないことが分かる。From the comparison between Examples 1 to 3 and Comparative Example 1, the usual inorganic fillers have no effect of adsorbing and removing the causative substances that cause odor and bad taste, while the inorganic porous active substances used in the present invention. It can be seen that has an excellent adsorption and removal effect. Further, from the comparison between Example 2 and Comparative Example 2, it can be seen that the effect of the polyolefin layer containing the inorganic porous active substance is not exhibited unless it is on the inner surface side of the paper.
【００２５】[0025]
【発明の効果】この様に、本発明の食品容器用包装材料
は、紙臭気及びポリオレフィン系樹脂の分解・酸化臭に
よる食品の異臭、及び味の低下を防止することができ
る。さらに、本発明は従来から行なわれている押出ラミ
ネート法を採用することができるため、生産性が高く価
格も安価におさえることができる。INDUSTRIAL APPLICABILITY As described above, the packaging material for a food container of the present invention can prevent the offensive odor of food and the deterioration of taste due to paper odor and decomposition / oxidation odor of polyolefin resin. Furthermore, since the present invention can employ the extrusion laminating method which has been conventionally used, the productivity can be high and the cost can be kept low.
【図１】本発明包装材料の実施態様を示す概略断面図で
ある。FIG. 1 is a schematic cross-sectional view showing an embodiment of the packaging material of the present invention.
【図２】本発明包装材料の実施態様を示す概略断面図で
ある。FIG. 2 is a schematic sectional view showing an embodiment of the packaging material of the present invention.
【図３】本発明包装材料の実施態様を示す概略断面図で
ある。FIG. 3 is a schematic cross-sectional view showing an embodiment of the packaging material of the present invention.
１ 紙 ２ 無機系多孔性活性物質含有ポリオレフィン系樹脂層 ３ 最内面側樹脂層 ４ 外面側樹脂層 1 Paper 2 Polyolefin Resin Layer Containing Inorganic Porous Active Substance 3 Innermost Resin Layer 4 Outer Resin Layer
─────────────────────────────────────────────────────
─────────────────────────────────────────────────── ───
【手続補正書】[Procedure amendment]
【提出日】平成６年７月６日[Submission date] July 6, 1994
【手続補正１】[Procedure Amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】０００７[Correction target item name] 0007
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【０００７】本発明に用いられる無機系多孔性活性物質
としては、紙や樹脂層から発する異臭や異味の原因物質
を吸着除去するもので、一般に脱臭剤と云われる範疇に
はいるが、押出ラミネートの高温に耐え、優れた吸着作
用を有するものが用いられる。たとえば、活性炭、活性
白土、酸性白土、ゼオライト（天然、合成）、ベントナ
イト、セピオライト、シリカ、ＭｇＯとＳｉＯ２との混
合物などの合成法多孔物質などが挙げられる。これらは
包装材料の構成や製缶方法の種類により適宜選択され、
単独で又は２種以上混合して用いられる。該活性物質が
食品に接触する場合は、食品添加物として認可されてい
る物質を選択する必要があるが、その他の場合は、性
能、価格、外観（色等）等により決定される。The inorganic porous active substance used in the present invention is a substance which adsorbs and removes substances causing offensive odors and tastes generated from paper and resin layers, and is generally in a category called a deodorant, but is extrusion laminated. A material that withstands high temperatures and has an excellent adsorption effect is used. Examples thereof include activated carbon, activated clay, acid clay, zeolite (natural and synthetic), bentonite, sepiolite, silica, and synthetic porous materials such as a mixture of MgO and SiO 2 . These are appropriately selected depending on the configuration of the packaging material and the type of can manufacturing method,
They may be used alone or in combination of two or more. When the active substance comes into contact with food, it is necessary to select a substance approved as a food additive, but in other cases, it is determined by performance, price, appearance (color etc.) and the like.
Claims (4)
包装材料において、少なくとも紙と最内面樹脂層との間
のポリオレフィン系樹脂層に無機系多孔性活性物質を含
有させたことを特徴とする食品容器用包装材料。1. A multi-layered packaging material comprising paper and a thermoplastic resin layer, characterized in that at least a polyolefin resin layer between the paper and the innermost resin layer contains an inorganic porous active substance. And packaging materials for food containers.
白土、酸性白土、ゼオライト、ベントナイト、セピオラ
イト、シリカ、ＭｇＯとＳｉＯ2 との混合物よりなる群
より選択される少なくとも１種である請求項１記載の包
装材料。2. The inorganic porous active substance is at least one selected from the group consisting of activated carbon, activated clay, acid clay, zeolite, bentonite, sepiolite, silica, and a mixture of MgO and SiO 2. The packaging material according to 1.
包装材料を製造するに際し、少なくとも紙と最内面樹脂
層との間に無機系多孔性活性物質を含有したポリオレフ
ィン系樹脂層を形成させることを特徴とする食品容器用
包装材料の製造方法。3. A polyolefin-based resin layer containing an inorganic porous active substance is formed at least between the paper and the innermost resin layer when producing a multi-layered packaging material containing paper and a thermoplastic resin layer. A method for producing a packaging material for a food container, comprising:
レフィン系樹脂層を押出ラミネートにより形成させる請
求項３記載の製造方法。4. The method according to claim 3, wherein the polyolefin resin layer containing the inorganic porous active substance is formed by extrusion lamination.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4325899A JPH06340036A (en) | 1992-11-10 | 1992-11-10 | Packing material for food container and production thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4325899A JPH06340036A (en) | 1992-11-10 | 1992-11-10 | Packing material for food container and production thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06340036A true JPH06340036A (en) | 1994-12-13 |
Family
ID=18181843
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4325899A Withdrawn JPH06340036A (en) | 1992-11-10 | 1992-11-10 | Packing material for food container and production thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06340036A (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6329054B1 (en) | 1995-07-10 | 2001-12-11 | Borealis Polymers Oy | Cable and method for using a cable-sheathing composition including an ethylene polymer mixture |
| WO2002018226A1 (en) * | 2000-08-28 | 2002-03-07 | Tetra Laval Holdings & Finance S.A. | A packaging laminate and packaging containers produced therefrom |
| US6416860B1 (en) | 1997-10-20 | 2002-07-09 | Borealis A/S | Electric cable and a method and composition for the production thereof |
| US6586509B1 (en) | 1998-07-03 | 2003-07-01 | Borealis Technology Oy | Composition for electric cables comprising thiodiol fatty acid diesters |
| EP1339541A1 (en) * | 2000-11-07 | 2003-09-03 | International Paper Company | Molecular sieve containing structure for organoleptic scavenging |
| JP2006500240A (en) * | 2002-03-04 | 2006-01-05 | インターナショナル ペーパー カンパニー | Laminated product with improved adhesion |
| KR100788874B1 (en) * | 2006-09-12 | 2007-12-27 | 안종희 | Method for manufacturing packing materials to keep vegetables and fruits freshly and packing materials thereby |
| JP2013121573A (en) * | 2011-12-12 | 2013-06-20 | Kyodo Shiko Kk | Adsorbing sheet and method for manufacturing the same, and container |
| JP2013221021A (en) * | 2012-04-18 | 2013-10-28 | Dai Ichi Kogyo Seiyaku Co Ltd | Sucrose aromatic monocarboxylic acid ester |
| CN104817598A (en) * | 2012-02-21 | 2015-08-05 | 第一工业制药株式会社 | Sucrose aromatic monocarboxylate |
| JP2017190137A (en) * | 2016-04-11 | 2017-10-19 | 共同紙工株式会社 | Bag body and bag body with string |
| JP2022513205A (en) * | 2018-12-11 | 2022-02-07 | メッツァ ボード オーワイジェイ | Paperboard structure, package and how to use the package |
-
1992
- 1992-11-10 JP JP4325899A patent/JPH06340036A/en not_active Withdrawn
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6329054B1 (en) | 1995-07-10 | 2001-12-11 | Borealis Polymers Oy | Cable and method for using a cable-sheathing composition including an ethylene polymer mixture |
| US6416860B1 (en) | 1997-10-20 | 2002-07-09 | Borealis A/S | Electric cable and a method and composition for the production thereof |
| US6586509B1 (en) | 1998-07-03 | 2003-07-01 | Borealis Technology Oy | Composition for electric cables comprising thiodiol fatty acid diesters |
| WO2002018226A1 (en) * | 2000-08-28 | 2002-03-07 | Tetra Laval Holdings & Finance S.A. | A packaging laminate and packaging containers produced therefrom |
| US7288302B2 (en) | 2000-08-28 | 2007-10-30 | Tetra Laval Holdings & Finance S.A. | Packaging laminate and packaging containers produced therefrom |
| JP2004507406A (en) * | 2000-08-28 | 2004-03-11 | テトラ ラバル ホールデイングス エ フイナンス ソシエテ アノニム | Packaging laminate and packaging container produced thereby |
| EP1339541A4 (en) * | 2000-11-07 | 2005-07-20 | Int Paper Co | Molecular sieve containing structure for organoleptic scavenging |
| EP1339541A1 (en) * | 2000-11-07 | 2003-09-03 | International Paper Company | Molecular sieve containing structure for organoleptic scavenging |
| JP2006500240A (en) * | 2002-03-04 | 2006-01-05 | インターナショナル ペーパー カンパニー | Laminated product with improved adhesion |
| KR100788874B1 (en) * | 2006-09-12 | 2007-12-27 | 안종희 | Method for manufacturing packing materials to keep vegetables and fruits freshly and packing materials thereby |
| JP2013121573A (en) * | 2011-12-12 | 2013-06-20 | Kyodo Shiko Kk | Adsorbing sheet and method for manufacturing the same, and container |
| CN104817598A (en) * | 2012-02-21 | 2015-08-05 | 第一工业制药株式会社 | Sucrose aromatic monocarboxylate |
| JP2013221021A (en) * | 2012-04-18 | 2013-10-28 | Dai Ichi Kogyo Seiyaku Co Ltd | Sucrose aromatic monocarboxylic acid ester |
| JP2017190137A (en) * | 2016-04-11 | 2017-10-19 | 共同紙工株式会社 | Bag body and bag body with string |
| JP2022513205A (en) * | 2018-12-11 | 2022-02-07 | メッツァ ボード オーワイジェイ | Paperboard structure, package and how to use the package |
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