JPH0782691A - Packaging material - Google Patents
Packaging materialInfo
- Publication number
- JPH0782691A JPH0782691A JP17085793A JP17085793A JPH0782691A JP H0782691 A JPH0782691 A JP H0782691A JP 17085793 A JP17085793 A JP 17085793A JP 17085793 A JP17085793 A JP 17085793A JP H0782691 A JPH0782691 A JP H0782691A
- Authority
- JP
- Japan
- Prior art keywords
- light
- moisture
- packaging material
- shielding
- layer
- 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.)
- Granted
Links
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は物品の包装材料、より詳
細には防湿性と遮光性により優れ、写真フィルム等の遮
光性を要求される包装に信頼性のある包装材料に関する
ものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a packaging material for articles, and more particularly to a packaging material which is excellent in moisture-proof property and light-shielding property and is reliable for packaging such as photographic film which is required to have light-shielding property.
【０００２】[0002]
【従来の技術】従来各種製品を包装するための包装材料
には、包装される物品の種類、使用される環境に応じ
て、各種の材料を単一もしくは複合させた構成、形態で
使用されてきている。この中で、写真用のネガフィルム
や各種の感光体等は、水分や外光の影響を受け易いの
で、これらを完全に遮断し、物品の特性を低下させない
ように設計された包装材料が使用されている。具体的に
は、プラスチックフィルム単層もしくは複合層のもの
や、紙にプラスチックフィルムやアルミニウム箔をラミ
ネートしたもの等が用いられている。2. Description of the Related Art Conventionally, as a packaging material for packaging various products, various materials have been used in a single or composite structure or form depending on the type of articles to be packaged and the environment in which they are used. ing. Among them, negative films for photography and various photoconductors are easily affected by moisture and external light, so use packaging materials designed to completely block them and not deteriorate the properties of articles. Has been done. Specifically, a plastic film single layer or a composite layer, a paper laminated with a plastic film or an aluminum foil, and the like are used.
【０００３】[0003]
【発明が解決しようとする課題】しかし上記のような構
成の包装材料の多くは、プラスチックフィルムは勿論の
こと、例え紙を支持体としたものであっても、一旦使用
したものは、ラミネート等で併用する材料や含浸する材
料等の影響で、分離したり分解したりすることが困難
で、再生紙として再利用することは先ず不可能とされて
おり、使用後の廃棄処理が困難であるという問題をかか
えている。最近では環境保護の見地から、自然の状態に
廃棄処分した場合、腐食，分解し難いプラスチックを使
用しないようにする要望が強いが、いまだ満足すべき製
品は生まれていない。本発明は上記の如き課題を解決す
ることを目的とし、プラスチックフィルムやアルミニウ
ム箔を併用することなしに、防湿性と遮光性とを有し、
かつ再生紙として再利用することが可能な防湿性遮光性
包装材料を提供することを目的とするものである。However, most of the packaging materials having the above-mentioned constitutions are not limited to plastic films, and even if they are made of paper as a support, those used once are laminated or the like. It is difficult to separate and disassemble due to the effect of materials used in combination with and impregnated materials, and it is considered impossible to reuse it as recycled paper, and it is difficult to dispose of it after use. I have a problem. Recently, from the standpoint of environmental protection, there is a strong demand not to use plastic that is difficult to corrode or decompose when it is disposed of in a natural state, but a satisfactory product has not been created yet. The present invention aims to solve the above problems, without using a plastic film or aluminum foil in combination, has a moisture-proof and light-shielding properties,
Moreover, it is an object of the present invention to provide a moisture-proof, light-shielding packaging material that can be reused as recycled paper.
【０００４】[0004]
【課題を解決するための手段】本発明の概要は、紙支持
体の少なくとも片面に、無機顔料を主成分として含有す
る遮光層と、スチレン−（メタ）アクリル酸エステル共
重合体及びワックスを含有する防湿層を設けてなり、Ｊ
ＩＳ Ｚ−０２０８の「防湿包装材料の透湿度試験方
法」による透湿度が３０ｇ／ｍ2 ・２４ｈ以下であるこ
とを特徴とする包装材料に存する。SUMMARY OF THE INVENTION An outline of the present invention is to provide a light-shielding layer containing an inorganic pigment as a main component, a styrene- (meth) acrylic acid ester copolymer and a wax on at least one surface of a paper support. It has a moisture-proof layer
The packaging material is characterized by having a moisture permeability of 30 g / m 2 · 24 h or less according to “Moisture Permeability Testing Method for Moisture-Proof Packaging Materials” of IS Z-0208.
【０００５】本発明の具体的な実施態様を図面により説
明すれば、図１は紙支持体１の片面に無機材料からなる
遮光材２を均一に分散した遮光層３を設け、その上に防
湿層４を設けた場合、図２は紙支持体１の片面に無機材
料からなる遮光材２を均一に分散した遮光層３を設け、
他の片面に防湿層４を設けた場合、図３は紙支持体１の
両面にそれぞれ図１と同様に遮光材２を均一に分散した
遮光層３と、防湿層４とを順次設けた場合、図４は紙支
持体１の片面に図１と同様に遮光材２を均一に分散した
遮光層３と防湿層４とを順次設け他の片面に防湿層４を
設けた場合、図５は紙支持体１の片面に図１と同様に遮
光材２を均一に分散した遮光層３と防湿層４とを順次設
け、他の片面に遮光層３を設けた場合を示している。図
６は紙支持体１の片面に防湿層４を設け、その上に無機
材料からなる遮光材２を均一に分散した遮光層３を設け
た場合を示している。本発明において防湿層に使用され
るスチレン−（メタ）アクリル酸エステル共重合体の具
体的モノマー組成は、スチレン，アクリル酸メチル，ア
クリル酸エチル，アクリル酸ｎ−ブチル，アクリル酸プ
ロピル，アクリル酸２−エチルヘキシル，メタクリル酸
メチル，メタクリル酸エチル，メタクリル酸ｎ−ブチ
ル，メタクリル酸プロピル，メタクリル酸２−エチルヘ
キシル等が挙げられる。そして本発明においてはスチレ
ン−（メタ）アクリル酸エステル共重合体のガラス転移
点が好ましくは３０〜７０℃、より好ましくは４０〜６
０℃である。ガラス転移点が３０℃未満ではブロッキン
グ現象が発生し易くなり、又、スチレンの共重合比率を
増加してガラス転移点を７０℃より高くすると、製膜性
が低下するので好ましくない。なお、ガラス転移点の測
定方法は示差走査熱量計（ＤＳＣ）により測定した。A specific embodiment of the present invention will be described with reference to the drawings. In FIG. 1, a light-shielding layer 3 in which a light-shielding material 2 made of an inorganic material is uniformly dispersed is provided on one surface of a paper support 1, and a moisture-proof layer is provided thereon. When the layer 4 is provided, in FIG. 2, the light-shielding layer 3 in which the light-shielding material 2 made of an inorganic material is uniformly dispersed is provided on one surface of the paper support 1.
In the case where the moisture-proof layer 4 is provided on the other side, in FIG. 3, the light-shielding layer 3 in which the light-shielding material 2 is uniformly dispersed and the moisture-proof layer 4 are sequentially provided on both sides of the paper support 1 as in FIG. 4 shows a case where a light-shielding layer 3 in which a light-shielding material 2 is uniformly dispersed and a moisture-proof layer 4 are sequentially provided on one surface of a paper support 1 as in FIG. 1, and a moisture-proof layer 4 is provided on the other surface. 1 shows a case where a light-shielding layer 3 in which a light-shielding material 2 is uniformly dispersed and a moisture-proof layer 4 are sequentially provided on one surface of a paper support 1 and the light-shielding layer 3 is provided on the other surface. FIG. 6 shows a case where the moisture-proof layer 4 is provided on one surface of the paper support 1, and the light-shielding layer 3 in which the light-shielding material 2 made of an inorganic material is uniformly dispersed is provided thereon. The specific monomer composition of the styrene- (meth) acrylic acid ester copolymer used for the moisture-proof layer in the present invention is styrene, methyl acrylate, ethyl acrylate, n-butyl acrylate, propyl acrylate, acrylic acid 2 -Ethylhexyl, methyl methacrylate, ethyl methacrylate, n-butyl methacrylate, propyl methacrylate, 2-ethylhexyl methacrylate and the like can be mentioned. In the present invention, the glass transition point of the styrene- (meth) acrylic acid ester copolymer is preferably 30 to 70 ° C, more preferably 40 to 6 ° C.
It is 0 ° C. If the glass transition point is lower than 30 ° C., the blocking phenomenon is likely to occur, and if the copolymerization ratio of styrene is increased to raise the glass transition point to higher than 70 ° C., the film forming property is deteriorated, which is not preferable. The glass transition point was measured by a differential scanning calorimeter (DSC).
【０００６】又、更に本発明を構成する防湿層に使用さ
れるワックスとしてはポリエチレンワックス、モンタン
ワックス、カルナウバワックス、マイクロクリスタリン
ワックス、蜜蝋、パラフィンワックス等が挙げられる。
又、これらのワックスは単独使用してもまたは２種類以
上を組合せて使用してもよい。そして該ワックスの示差
走査熱量計（ＤＳＣ）による融点は好ましくは４０〜１
４０℃、より好ましくは５０〜１１０℃である。ここで
融点が４０℃未満ではブロッキング現象が発生し易く、
又１４０℃より高い温度では防湿層を設ける際の乾燥処
理に際し、ワックスが十分に軟化、流動しないため、被
覆層の均一性を損ない結果として防湿性が悪化し易い。Further, as the wax used in the moisture-proof layer constituting the present invention, polyethylene wax, montan wax, carnauba wax, microcrystalline wax, beeswax, paraffin wax and the like can be mentioned.
Further, these waxes may be used alone or in combination of two or more kinds. The melting point of the wax measured by a differential scanning calorimeter (DSC) is preferably 40-1.
The temperature is 40 ° C, more preferably 50 to 110 ° C. If the melting point is less than 40 ° C., the blocking phenomenon easily occurs,
Further, at a temperature higher than 140 ° C., the wax is not sufficiently softened and does not flow during the drying treatment for forming the moisture-proof layer, so that the uniformity of the coating layer is impaired and the moisture-proof property is apt to deteriorate.
【０００７】本発明において、防湿層にはスチレン−
（メタ）アクリル酸エステル共重合体とワックス類を含
有するものであるが、スチレン−（メタ）アクリル酸エ
ステル共重合体とワックス類の配合割合は、重量比で４
０：６０〜９０：１０の範囲が好ましい。スチレン−
（メタ）アクリル酸エステル共重合体の割合が、この範
囲を外れて少な過ぎても、多過ぎても、製膜性が低下し
防湿性が悪化する。In the present invention, the moisture-proof layer contains styrene-
It contains a (meth) acrylic acid ester copolymer and waxes, and the mixing ratio of the styrene- (meth) acrylic acid ester copolymer and waxes is 4 by weight.
The range of 0:60 to 90:10 is preferable. Styrene
If the proportion of the (meth) acrylic acid ester copolymer is out of this range and is too small or too large, the film-forming property is lowered and the moisture resistance is deteriorated.
【０００８】本発明に於て、防湿層を形成する材料の塗
布量は、８〜２０ｇ／ｍ2 程度が好適であるが、ＪＩＳ
Ｚ−０２０８の「防湿包装材料の透湿度試験方法」
（カップ法）による透湿度が３０ｇ／ｍ2 ・２４ｈ以下
であることが必要である。これにより感光フィルム等湿
気で特性の低下し易い材料は、長期にわたり品質を低下
させることなく包装保存することが可能となる。In the present invention, the coating amount of the material forming the moisture-proof layer is preferably about 8 to 20 g / m 2 , but JIS
Z-0208 "Test method for moisture permeability of moisture-proof packaging materials"
It is necessary that the water vapor permeability (by the cup method) is 30 g / m 2 · 24 h or less. As a result, a material such as a photosensitive film whose properties are likely to deteriorate due to moisture can be stored in a package for a long period without deteriorating the quality.
【０００９】本発明で遮光層には遮光材として無機顔料
が使用される。無機顔料は、従来着色材として一般に使
用されているものが使用可能であり、具体的には、カー
ボンブラック、二酸化チタン、チタンブラック、チタニ
ウムイエロー、酸化コバルト、群青、亜鉛華、べんが
ら、アルミニウムペースト等が挙げられるが、遮光性に
優れたものとしてカーボンブラック、二酸化チタン、べ
んがら、アルミニウムペーストは特に好適である。In the present invention, an inorganic pigment is used as a light shielding material in the light shielding layer. As the inorganic pigment, those generally used as a conventional coloring material can be used, and specifically, carbon black, titanium dioxide, titanium black, titanium yellow, cobalt oxide, ultramarine blue, zinc white, red iron oxide, aluminum paste, etc. Among them, carbon black, titanium dioxide, red iron oxide, and aluminum paste are particularly preferable because they have excellent light-shielding properties.
【００１０】本発明で遮光層は前記した無機顔料と結着
用樹脂とからなり、結着用樹脂としては、従来一般に用
いられるコーティング用の樹脂の使用が可能であり、具
体例としては、アクリル系、スチレン系、ポリエステル
系、ポリウレタン系、ポリアミド系、塩化ビニル系、醋
酸ビニル系、ポリオレフィン系、ポリビニルアルコール
系、でんぷん、カゼイン、ニトロセルロース、エチルセ
ルロース、アセチルセルロース、ポリビニルブチラール
系、ポリビニルアセタール系等の樹脂が挙げられる。ま
たこれらの組合せによるポリマーブレンド、ランダム共
重合体、ブロック共重合体、グラフト共重合体等の使用
も可能である。遮光層中における無機顔料と結着用樹脂
の配合割合は、重量比で無機顔料：結着用樹脂＝４：１
〜１：２０、より好ましくは２：１〜１：１０である。
遮光層の塗布量としては８〜２０ｇ／ｍ2 程度が好適で
ある。８ｇ／ｍ2 未満では十分な遮光性が得られず、２
０ｇ／ｍ2 を越えて多いと、塗布量に見合う性質が得ら
れず、コスト高となる。本発明で使用する支持体として
は、従来一般に使用されている紙の使用が可能であり、
上質紙、クラフト紙等、特に限定されない。本発明で紙
支持体上に遮光層及び防湿層を設けるにあたっては、従
来公知のコーティング方法によって、各層を形成できる
塗料を支持体上に塗布、乾燥すればよい。In the present invention, the light-shielding layer is composed of the above-mentioned inorganic pigment and a binder resin. As the binder resin, it is possible to use a coating resin which has been generally used in the past. Styrene-based, polyester-based, polyurethane-based, polyamide-based, vinyl chloride-based, vinyl acetate-based, polyolefin-based, polyvinyl alcohol-based, starch, casein, nitrocellulose, ethyl cellulose, acetyl cellulose, polyvinyl butyral-based, polyvinyl acetal-based resins, etc. Can be mentioned. Further, it is also possible to use a polymer blend, a random copolymer, a block copolymer, a graft copolymer or the like by a combination of these. The blending ratio of the inorganic pigment and the binder resin in the light-shielding layer is, by weight, inorganic pigment: binder resin = 4: 1.
˜1: 20, more preferably 2: 1 to 1:10.
The coating amount of the light shielding layer is preferably about 8 to 20 g / m 2 . If it is less than 8 g / m 2 , sufficient light-shielding properties cannot be obtained, and 2
When the amount is more than 0 g / m 2 , the property corresponding to the coating amount cannot be obtained and the cost becomes high. As the support used in the present invention, it is possible to use a paper which is generally used conventionally.
There is no particular limitation, such as high-quality paper and kraft paper. In providing the light-shielding layer and the moisture-proof layer on the paper support in the present invention, a coating material capable of forming each layer may be applied onto the support by a conventionally known coating method and dried.
【００１１】[0011]
【実施例】以下、実施例に従って本発明の詳細な説明を
行なう。例中の部数はすべて重量部を表わす。 実施例１ 坪量８３ｇ／ｍ2 のクラフト紙を紙支持体として使用し
て、下記組成よりなる遮光層用塗料を塗布乾燥して塗布
量１０ｇ／ｍ2 の遮光層を設けた。 ・べんがら（トダカラー１００ＥＤ、戸田工業社製） ４０部 ・エチレン−醋酸ビニル共重合体エマルジョン ８００部 （ポリゾールＯＬＸ−３９６５−２、昭和高分子社製、固形分３０％） ・ヘキサメタリン酸の１０％水溶液 １部 ・水 ８０部 次に、上記の遮光層上に下記組成よりなる防湿層用塗料
を塗布乾燥して、塗布量１２ｇ／ｍ2 の防湿層を設け、
本発明の包装材料を作製した。 ・パラフィンワックスの水分散液（融点６０℃、固形分１０％） ２０部 ・スチレン−（メタ）アクリル酸エステル共重合体エマルジョン ２５部 （モビニール７５２，ヘキスト合成社製） （ガラス転移点４０℃、固形分４７％）EXAMPLES The present invention will be described in detail below with reference to examples. All parts in the examples represent parts by weight. Example 1 A kraft paper having a basis weight of 83 g / m 2 was used as a paper support, and a coating for a light-shielding layer having the following composition was applied and dried to provide a light-shielding layer having an application amount of 10 g / m 2 . Bengala (Toda Color 100ED, manufactured by Toda Kogyo Co., Ltd.) 40 parts ・ Ethylene-vinyl acetic acid copolymer emulsion 800 parts (Polysol OLX-3965-2, Showa Polymer Co., Ltd., solid content 30%) ・ 10% aqueous solution of hexametaphosphoric acid 1 part water 80 parts Next, a moisture-proof coating material having the following composition is applied onto the above light-shielding layer and dried to provide a moisture-proof layer having a coating amount of 12 g / m 2 .
The packaging material of the present invention was produced.・ Aqueous dispersion of paraffin wax (melting point 60 ° C., solid content 10%) 20 parts ・ Styrene- (meth) acrylic acid ester copolymer emulsion 25 parts (Movinyl 752, Hoechst Synthetic) (glass transition point 40 ° C., Solid content 47%)
【００１２】実施例２ 防湿層用塗料として下記組成のものを使用した以外は、
実施例１と全く同様にして本発明の包装材料を作製し
た。 ・カルナバワックスの水分散液（融点８３℃、固形分１０％） ２０部 ・スチレン−（メタ）アクリル酸エステル共重合体 ２５部 （ポリゾールＡＰ・２６６８，昭和高分子社製） （ガラス転移点６０℃、固形分５０％）Example 2 Except that the following composition was used as the coating for the moisture-proof layer:
The packaging material of the present invention was produced in exactly the same manner as in Example 1.・ Aqueous dispersion of carnauba wax (melting point: 83 ° C., solid content: 10%) 20 parts ・ Styrene- (meth) acrylic acid ester copolymer 25 parts (Polysol AP-2668, Showa High Polymer Co., Ltd.) (glass transition point 60 ℃, solid content 50%)
【００１３】実施例３ 遮光層用塗料として下記組成のものを使用した以外は、
実施例１と全く同様にして本発明の包装材料を作製し
た。 ・カーボンブラックの水分散液 ２０部 （ＤＣブラック−７１００、大日精化工業社製、固形分３４．５％） ・スチレン−ブタジエンラテックス １００部 （ラックスターＤＳ４０５、大日本インキ化学工業社製、固形分４５％）Example 3 Except that the following composition was used as the coating for the light-shielding layer,
The packaging material of the present invention was produced in exactly the same manner as in Example 1.・ Aqueous dispersion of carbon black 20 parts (DC black-7100, Dainichiseika Kogyo KK, solid content 34.5%) ・ Styrene-butadiene latex 100 parts (Lucstar DS405, Dainippon Ink and Chemicals KK solid Min 45%)
【００１４】実施例４ 遮光層用塗料として下記組成のものを使用した以外は、
実施例１と全く同様にして本発明の包装材料を作製し
た。 ・二酸化チタン ４０部 ・エチレン−酢酸ビニル共重合体エマルジョン ８００部 （ポリゾールＯＬＸ−３９６５−２、昭和高分子社製、固形分３０％） ・ヘキサメタリン酸の１０％水溶液 １部 ・水 ８０部Example 4 Except that the following composition was used as the coating for the light-shielding layer,
The packaging material of the present invention was produced in exactly the same manner as in Example 1. -Titanium dioxide 40 parts-Ethylene-vinyl acetate copolymer emulsion 800 parts (Polysol OLX-3965-2, Showa High Polymer Co., Ltd., solid content 30%)-Hexamethaphosphoric acid 10% aqueous solution 1 part-Water 80 parts
【００１５】実施例５ 遮光層用塗料として下記組成のものを使用した以外は、
実施例１と全く同様にして本発明の包装材料を作製し
た。 ・アルミニウムペースト（固形分７６％） １０部 ・エチレン−酢酸ビニル共重合体エマルジョン ２５部 （ポリゾールＯＬＸ−３９６５−２、昭和高分子社製、固形分３０％）Example 5 Except that the following composition was used as the coating for the light shielding layer,
The packaging material of the present invention was produced in exactly the same manner as in Example 1. -Aluminum paste (solid content 76%) 10 parts-Ethylene-vinyl acetate copolymer emulsion 25 parts (Polysol OLX-3965-2, Showa High Polymer Co., solid content 30%)
【００１６】比較例１ 実施例１において防湿層を設けない以外は、実施例１と
全く同様にして本発明の比較用の包装材料を作製した。Comparative Example 1 A comparative packaging material of the present invention was prepared in the same manner as in Example 1 except that the moisture-proof layer was not provided.
【００１７】比較例２ 防湿層用塗料として下記組成のものを使用した以外は、
実施例１と全く同様にして本発明の比較用の包装材料を
作製した。 ・パラフィンワックスの水分散液（融点６０℃、固形分１０％） ２０部 ・スチレン−アクリル酸エステル共重合体エマルジョン ２５部 （ガラス転移点９０℃、固形分４０％）Comparative Example 2 Except that the following composition was used as the coating for the moisture-proof layer:
A packaging material for comparison of the present invention was produced in exactly the same manner as in Example 1.・ Aqueous dispersion of paraffin wax (melting point 60 ° C., solid content 10%) 20 parts ・ Styrene-acrylic acid ester copolymer emulsion 25 parts (glass transition point 90 ° C., solid content 40%)
【００１８】比較例３ 実施例１において遮光層を設けない以外は、実施例１と
全く同様にして本発明の比較用の包装材料を作製した。Comparative Example 3 A comparative packaging material of the present invention was prepared in the same manner as in Example 1 except that the light shielding layer was not provided.
【００１９】比較例４ 実施例１で使用したクラフト紙に厚さ１７μｍのポリエ
チレンをラミネートしたものを比較用の包装材料として
使用した。Comparative Example 4 The kraft paper used in Example 1 laminated with polyethylene having a thickness of 17 μm was used as a packaging material for comparison.
【００２０】以上、実施例１〜５、比較例１〜４で得ら
れた各包装材料について、以下の方法で試験を行なっ
た。 ＜透湿度＞透湿度はＪＩＳ Ｚ−０２０８の「防湿包装
材料の透湿度試験方法」により測定した。 ＜離解性＞包装材料５０ｇに水１５００ｇを加えてパル
プ離解機（Ｎｏ．２５２９熊谷理機工業社製）を用い、
回転数１０００ｒｐｍで１０分間離解した後に得られた
離解品を水で希釈して、離解できない粗大パルプの状況
について目視で観察した。また得られた離解品をタッピ
ー標準手抄き機で紙とし、その表面に散剤するブロック
状の未離解部についても目視で観察した。それぞれの包
装材料について未離解部分が多く実用に耐えないものを
×、良好なものを○、中間程度のものを△とした。 ＜遮光性＞市販の紫外線測定ラベル（トミーＵＶチェッ
カーＨＲ、巴川製紙所製）の上に包装材料を重ね、晴天
時の屋外に５時間放置して遮光性の試験を行なった。外
光が透過し、ラベルが発色した部分の発色濃度を反射濃
度計（マクベス社製、ＲＤ−９１４）で測定した。上
記、離解性試験結果及び遮光性試験結果、透湿度の測定
結果を表１にまとめた。The packaging materials obtained in Examples 1 to 5 and Comparative Examples 1 to 4 were tested by the following method. <Moisture Permeability> The moisture permeability was measured according to JIS Z-0208 "Moisture Permeability Testing Method for Moisture Proof Packaging Materials". <Disaggregation> 1500 g of water was added to 50 g of the packaging material and a pulp disintegrator (No. 2529, manufactured by Kumagai Riki Kogyo Co., Ltd.) was used.
The disintegrated product obtained after disintegrating at a rotation speed of 1000 rpm for 10 minutes was diluted with water, and the state of coarse pulp that could not be disintegrated was visually observed. Further, the obtained disaggregated product was made into paper by a tappy standard hand machine, and the block-shaped undisaggregated portion which was powdered on the surface was also visually observed. Regarding each of the packaging materials, the one with many undisaggregated portions that could not be practically used was rated as ×, the good one was rated as ○, and the intermediate grade was rated as Δ. <Light-shielding property> The packaging material was placed on a commercially available ultraviolet ray measurement label (Tomy UV Checker HR, manufactured by Tomoegawa Paper Co., Ltd.), and left for 5 hours outdoors in fine weather to test the light-shielding property. The color density of the part where the external light was transmitted and the label was colored was measured with a reflection densitometer (RD-914, manufactured by Macbeth Co.). Table 1 shows the results of the disintegration test, the light-shielding test, and the moisture permeability.
【００２１】[0021]
【表１】 [Table 1]
【００２２】表１の結果から明らかなように、本発明の
包装材料は良好な防湿性と遮光性を有し、かつ再生使用
する際に容易に離解できる良好な再生紙適性を有するも
のである。As is clear from the results shown in Table 1, the packaging material of the present invention has good moisture resistance and light-shielding properties, and also has good suitability for recycled paper that can be easily disintegrated during recycling. .
【００２３】[0023]
【発明の効果】本発明の包装材料は、上記の構成を有し
ているので防湿性かつ遮光性において効果があり、該包
装材料で包装した場合その中味は湿度および外光の影響
を受けずに良好な状態を維持でき、また使用後も廃棄処
分に際しても再生紙として利用できるため環境の保護面
で大層有利である。Since the packaging material of the present invention has the above-mentioned constitution, it is effective in moisture-proof property and light-shielding property, and when packaged with the packaging material, its contents are not affected by humidity and external light. Since it can be maintained in a good condition and can be used as recycled paper after use and at the time of disposal, it is very advantageous in terms of environmental protection.
【図１】本発明の一実施例の断面図FIG. 1 is a sectional view of an embodiment of the present invention.
【図２】本発明の一実施例の断面図FIG. 2 is a sectional view of an embodiment of the present invention.
【図３】本発明の一実施例の断面図FIG. 3 is a sectional view of an embodiment of the present invention.
【図４】本発明の一実施例の断面図FIG. 4 is a sectional view of an embodiment of the present invention.
【図５】本発明の一実施例の断面図FIG. 5 is a sectional view of an embodiment of the present invention.
【図６】本発明の一実施例の断面図FIG. 6 is a sectional view of an embodiment of the present invention.
１ 紙支持体 ２ 無機顔料からなる遮光材 ３ 遮光層 ４ 防湿層 1 Paper support 2 Light-shielding material composed of inorganic pigment 3 Light-shielding layer 4 Moisture-proof layer
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｂ６５Ｄ 81/24 Ｅ Ｄ２１Ｈ 19/20 (72)発明者 塚田 衡 静岡県静岡市用宗巴町３番１号 株式会社 巴川製紙所情報メディア事業部内─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 6 Identification number Reference number within the agency FI Technical indication location B65D 81/24 ED 21H 19/20 (72) Inventor Hitoshi Tsukada 3 Soba-machi, Shizuoka-shi, Shizuoka Prefecture No. 1 Information Media Division, Tomagawa Paper Mill Co., Ltd.
Claims (3)
顔料を主成分として含有する遮光層と、スチレン−（メ
タ）アクリル酸エステル共重合体及びワックスを含有す
る防湿層とを設け、ＪＩＳ Ｚ−０２０８の「防湿包装
材料の透湿度試験方法」による透湿度が３０ｇ／ｍ2 ・
２４ｈ以下であることを特徴とする包装材料1. A light-shielding layer containing an inorganic pigment as a main component and a moisture-proof layer containing a styrene- (meth) acrylic acid ester copolymer and a wax are provided on at least one surface of a paper support according to JIS Z. -0208 "moisture permeability test method for moisture-proof packaging materials" has a moisture permeability of 30 g / m 2 ·
Packaging material characterized by being 24 hours or less
ら、二酸化チタン、アルミニウムペーストの少なくとも
一種である請求項１記載の包装材料2. The packaging material according to claim 1, wherein the inorganic pigment is at least one of carbon black, red iron oxide, titanium dioxide, and aluminum paste.
請求項１記載の包装材料3. The packaging material according to claim 1, wherein the melting point of the wax is 40 to 140 ° C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5170857A JP2814048B2 (en) | 1993-06-18 | 1993-06-18 | Packaging material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5170857A JP2814048B2 (en) | 1993-06-18 | 1993-06-18 | Packaging material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0782691A true JPH0782691A (en) | 1995-03-28 |
| JP2814048B2 JP2814048B2 (en) | 1998-10-22 |
Family
ID=15912609
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5170857A Expired - Fee Related JP2814048B2 (en) | 1993-06-18 | 1993-06-18 | Packaging material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2814048B2 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997014848A1 (en) * | 1995-10-18 | 1997-04-24 | Nippon Paper Industries Co., Ltd. | Moistureproof paper having shading property and recyclability |
| US5856398A (en) * | 1996-04-08 | 1999-01-05 | Toyo Ink Manufacturing Co., Ltd. | Aqueous pigment dispersion for light-shielding paper |
| JP2000281096A (en) * | 1999-04-01 | 2000-10-10 | Dainippon Printing Co Ltd | Lid material |
| WO2001075227A1 (en) * | 2000-03-31 | 2001-10-11 | Nippon Paper Industries Co., Ltd. | Recyclable light-shadowing and moisture-proof paper |
| JP2003119697A (en) * | 2001-10-12 | 2003-04-23 | Nippon Paper Industries Co Ltd | Moistureproof paper |
| EP3821074B1 (en) | 2018-07-13 | 2023-01-11 | Mitsubishi HiTec Paper Europe GmbH | Heat-sealable barrier paper |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5067644A (en) * | 1973-10-17 | 1975-06-06 | ||
| JPS56148997A (en) * | 1980-04-21 | 1981-11-18 | Kindai Kagaku Kogyo Kk | Water proofing processing composition of paper |
| JPH03279492A (en) * | 1990-03-28 | 1991-12-10 | Harima Chem Inc | Resin composition for moisture-resistant and waterproofing coating of paper |
| JPH0530619A (en) * | 1991-07-19 | 1993-02-05 | Sumitomo Densetsu Kk | U-turn cable laying method |
-
1993
- 1993-06-18 JP JP5170857A patent/JP2814048B2/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5067644A (en) * | 1973-10-17 | 1975-06-06 | ||
| JPS56148997A (en) * | 1980-04-21 | 1981-11-18 | Kindai Kagaku Kogyo Kk | Water proofing processing composition of paper |
| JPH03279492A (en) * | 1990-03-28 | 1991-12-10 | Harima Chem Inc | Resin composition for moisture-resistant and waterproofing coating of paper |
| JPH0530619A (en) * | 1991-07-19 | 1993-02-05 | Sumitomo Densetsu Kk | U-turn cable laying method |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997014848A1 (en) * | 1995-10-18 | 1997-04-24 | Nippon Paper Industries Co., Ltd. | Moistureproof paper having shading property and recyclability |
| US6117563A (en) * | 1995-10-18 | 2000-09-12 | Nippon Paper Industries Co., Ltd. | Moistureproof paper having shading property and recyclability |
| US5856398A (en) * | 1996-04-08 | 1999-01-05 | Toyo Ink Manufacturing Co., Ltd. | Aqueous pigment dispersion for light-shielding paper |
| JP2000281096A (en) * | 1999-04-01 | 2000-10-10 | Dainippon Printing Co Ltd | Lid material |
| JP4489204B2 (en) * | 1999-04-01 | 2010-06-23 | 大日本印刷株式会社 | Lid material |
| WO2001075227A1 (en) * | 2000-03-31 | 2001-10-11 | Nippon Paper Industries Co., Ltd. | Recyclable light-shadowing and moisture-proof paper |
| JP2003119697A (en) * | 2001-10-12 | 2003-04-23 | Nippon Paper Industries Co Ltd | Moistureproof paper |
| EP3821074B1 (en) | 2018-07-13 | 2023-01-11 | Mitsubishi HiTec Paper Europe GmbH | Heat-sealable barrier paper |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2814048B2 (en) | 1998-10-22 |
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