JPH06104355B2 - Water-absorbent food packaging box - Google Patents
Water-absorbent food packaging boxInfo
- Publication number
- JPH06104355B2 JPH06104355B2 JP63160332A JP16033288A JPH06104355B2 JP H06104355 B2 JPH06104355 B2 JP H06104355B2 JP 63160332 A JP63160332 A JP 63160332A JP 16033288 A JP16033288 A JP 16033288A JP H06104355 B2 JPH06104355 B2 JP H06104355B2
- Authority
- JP
- Japan
- Prior art keywords
- water
- paper
- thermoplastic resin
- paperboard
- box
- 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.)
- Expired - Lifetime
Links
Landscapes
- Paper (AREA)
- Packages (AREA)
- Laminated Bodies (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は、運搬用の食品包装箱に関するもので、特に水
を含むまたは水蒸気を発散する調理した食品類を持帰え
るために使用される吸水性を有する食品包装箱に関する
ものである。Description: FIELD OF THE INVENTION The present invention relates to a food packaging box for transportation, and is particularly used for bringing back cooked food products containing water or releasing steam. The present invention relates to a food packaging box having water absorption.
（従来の技術） 従来、水を含むまたは水蒸気を発散する食品類の包装に
は、主としてプラスチック製の容器、またはプラスチッ
クフイルムよりなる袋が使用されているが、水や水蒸気
がこれら容器内面で水滴となり、再び食品類に付着する
とその部分が水を含み、品質を害する恐れがあり、従っ
て容器に穴をあけて水蒸気を容器外に発散させる方法が
採用されてきたが、近時、アクリル系樹脂などによる固
形分の100倍から1000倍の水を吸収する高吸水性の樹脂
が開発され、これらの樹脂の粒状物を透水性のある紙や
不織布などで挟持したシートが、水を吸収するために食
品類の下敷などに使用されるようになってきた。(Prior Art) Conventionally, a plastic container or a bag made of a plastic film is mainly used for packaging foods that contain water or emit water vapor. However, if it adheres to foods again, that part may contain water, which may impair the quality.Therefore, a method of making a hole in the container and allowing water vapor to escape to the outside of the container has been adopted. A highly water-absorbent resin that absorbs 100 times to 1000 times the water content of solids has been developed, and the sheets sandwiching granular materials of these resins with water-permeable paper or nonwoven fabric absorb water. It has come to be used as an underlay for foods.
（当該発明が解決しようとする課題） 以上述べた如く、耐水性のあるプラスチック製の容器、
プラスチックフイルムをラミネートした容器やプラスチ
ックフイルムよりなる袋が包装容器として使用されるよ
うになってきたが、蒸気で蒸した饅頭など水蒸気を発散
する食品類や、焚いたばかりの米飯類などを包装する
と、水蒸気が容器の内面で凝縮して水滴となり、それが
再び食品類に付着するとその部分が余分に水を含み食味
を害するので、水蒸気の発散するように穴を開けるが、
その外側の包装に使用される紙袋や板紙製の箱などに吸
収され、破れたり箱が変型したりすることがあり、前記
高吸水性樹脂の応用が検討されるようになり、水が流れ
出る食品類の敷紙として使用されるようになってきた
が、高吸水性樹脂が断面などより脱落し食品に付着する
ことがあり、水で洗って更に加工され食用に供するもの
の場合は、これら高吸水性樹脂が付着しても取除くこと
が出来るのでよいが、前記の如く持帰り直ちに食べられ
る饅頭や、米飯類に付着することは好ましいことでな
く、またシートに直接食品類が接する場合、表面材が吸
水すると運搬中に食品に表面材の繊維が剥離し付着する
こともあり、従ってこの種用途にはまったく使用されて
いないのが現状であり、蒸したばかりの熱い饅頭や米飯
など水蒸気を発散するものを包装したとき、再び凝縮し
た水が再び吸収されることなく、また、吸水剤などで食
品を汚染することなく、更には吸水しても強度に変化な
く表面材の繊維が剥離せず、かつ箱の形状が崩れること
のない包装用箱の開発が要望されており、これらの課題
を解決することが本発明の目的とするところである。(Problems to be Solved by the Invention) As described above, a water-resistant plastic container,
Containers laminated with plastic film and bags made of plastic film have come to be used as packaging containers, but when packaging foods that emit steam such as steamed steamed buns, or rice just cooked, Water vapor condenses on the inner surface of the container to form water droplets, and when it adheres to foods again, that portion contains extra water and impairs the taste, so I make a hole so that the water vapor can escape.
It may be absorbed into a paper bag or a paperboard box used for its outer packaging, and may be torn or deformed, and the application of the superabsorbent resin comes to be considered. It has come to be used as a sheet of paper, but the super absorbent polymer may fall off from the cross section etc. and adhere to foods, and if it is washed with water and further processed for edible use, these super absorbents It is good that it can be removed even if the conductive resin adheres, but it is not preferable to adhere to buns and cooked rice that can be eaten immediately after taking it home as described above, and when food comes in direct contact with the sheet, the surface When the material absorbs water, the fibers of the surface material may peel off and adhere to the food during transportation.Therefore, it is the fact that it is not used for this kind of application at all, and steam such as hot steamed buns and cooked rice is released. Do When the product is packaged, the condensed water is not absorbed again, the food is not contaminated with a water absorbing agent, and the strength of the surface material does not change even after absorbing water, and the fibers of the surface material do not peel off. Moreover, there is a demand for the development of a packaging box in which the shape of the box does not collapse, and it is an object of the present invention to solve these problems.
（課題を解決するための手段） 本発明は、かゝる課題を解決すべく種々検討の結果なさ
れたもので、高吸水性樹脂である例えば、アクリル酸ビ
ニルアルコール共重合体、アクリル酸ソーダ重合体など
の合成樹脂ポリマーの微細な粒状体を、紙または板紙を
ポリエチレン、ポリプロピレンなど熱可塑性樹脂フィル
ムで耐水性のある紙と溶着するに際し、該熱可塑性樹脂
フィルムの耐水紙側に保持せしめた貼合紙または貼合板
紙を用い食品包装箱を製函することにより解決したもの
である。すなわち、高吸水性樹脂であるアクリル酸ビニ
ルアルコール共重合体はポリエチレン、ポリプロピレン
など熱可塑性樹脂と、熱可塑性樹脂が溶融状態において
相溶性なく、かつ溶着せず該熱可塑性樹脂の表面に圧入
すると埋設されたような状態で固着保持され、脱落する
ことがないことを見出し、本発明を完成するに到つたも
のである。なお、高吸水性樹脂はエクストルダーなどで
紙に熱可塑性樹脂をラミネートするに際し、紙の上に散
布し、その上からラミネートし圧着するとよく、紙上に
散布せるのち熱可塑性フィルムを重ね、加熱圧着してフ
ィルムと紙などを融着させるも差支えない。(Means for Solving the Problems) The present invention has been made as a result of various investigations in order to solve such problems, and is a highly water-absorbent resin, for example, vinyl acrylate acrylate copolymer, sodium acrylate acrylate. A fine particle of synthetic resin polymer such as coalesced, which is held on the waterproof paper side of the thermoplastic resin film when the paper or paperboard is welded to the water resistant paper with a thermoplastic resin film such as polyethylene or polypropylene. The problem is solved by making a food packaging box by using interleaving paper or laminated board. That is, a vinyl acrylate copolymer which is a highly water-absorbent resin is embedded in a thermoplastic resin such as polyethylene or polypropylene when the thermoplastic resin is incompatible in a molten state and is not welded to the surface of the thermoplastic resin. The inventors have found that they are fixedly held in the state described above and do not fall off, and have completed the present invention. It should be noted that when superimposing the thermoplastic resin on the paper with an extruder, etc., the super absorbent resin may be sprinkled on the paper, laminated on top of it, and then pressure-bonded. After spreading on the paper, a thermoplastic film is layered and heat-pressed. It does not matter if the film and paper are fused together.
また、各は耐水強化剤としてとポリアミドピクロールヒ
ドリンを、製紙用木材パルプに配合して抄造した耐水
紙、またはポリエチレンなど、合成樹脂よりなる合成パ
ルプを製紙用木材パルプに配合して抄造した耐水紙を使
用すると、水を吸収しても繊維が剥離する恐れがなく良
好な結果が得られたものである。In addition, each is made of polyamide picrol hydrin as a water resistance enhancer, water-resistant paper made by mixing paper pulp for papermaking into papermaking, or synthetic pulp made of a synthetic resin such as polyethylene is mixed into papermaking wood pulp for papermaking. When water-resistant paper was used, good results were obtained without fear of the fibers peeling off even when absorbing water.
（作用） 本発明にかゝる吸水性を有する包装箱は、高吸水性樹脂
の微粒子が熱可塑性樹脂フィルムと耐水紙を溶着せる間
に熱可塑性樹脂により保持されているので、水蒸気また
は水が耐水紙に吸着または通過し、熱可塑性樹脂フィル
ム面で水が凝縮しても高吸水性樹脂が水を吸収し、再び
被包装物に水滴が吸収される恐れはまったくなくなるも
のであり、かつ、熱可塑性樹脂フィルムは水蒸気を遮断
するのでその外側の包装材料が吸水し、強度が低下した
り、箱の形がくずれるのを防ぐ作用を有するものであ
る。また、食品に接する面の耐水紙は水を吸収しても繊
維が剥離する恐れはない。(Function) In the packaging box having water absorbency according to the present invention, since the fine particles of the highly water-absorbent resin are retained by the thermoplastic resin while the thermoplastic resin film and the waterproof paper are welded, water vapor or water is not generated. Even if the water-absorbent paper adsorbs or passes through, and the water is condensed on the thermoplastic resin film surface, the superabsorbent resin absorbs the water, and there is no risk of water droplets being absorbed again in the packaged object, and Since the thermoplastic resin film blocks water vapor, it has the function of preventing the packaging material on the outside thereof from absorbing water, resulting in a decrease in strength and the collapse of the shape of the box. Further, the water-resistant paper on the surface in contact with food does not have the risk of peeling fibers even if it absorbs water.
（実施例） 本発明を実施例に従って説明する。(Example) This invention is demonstrated according to an Example.
実施例１ 針葉樹晒クラフトパルプを主原料となし、耐水強化剤の
ポリアミドピクロールヒドリンを0.5重量％添加して抄
造した坪量50g/m2の耐水紙と、丸網多筒式抄紙機で木材
パルプを主原料として抄造された坪量350g/m2のコート
板紙を、低密度ポリエチレンをエクストルダーを用いて
溶着するに際し、平均粒径20μのアクリル酸ソーダ重合
体よりなる高吸水性樹脂の微粒子を該耐水紙上に散布せ
るのち、溶融低密度ポリエチレンで被覆すると同時にコ
ート板紙を圧着し、コート板紙／低密度ポリエチレン／
高吸水性樹脂／耐水紙よりなる貼合板紙を得た。Example 1 Water-resistant paper having a basis weight of 50 g / m 2 produced by using 0.5% by weight of polyamide picrol hydrin as a water resistance enhancer and using a softwood bleached kraft pulp as a main raw material and a reticulated multi-cylinder paper machine. Coated paperboard with a basis weight of 350 g / m 2 made from wood pulp as the main raw material, when welding low-density polyethylene using an extruder, a super absorbent polymer made of a sodium acrylate polymer with an average particle size of 20 μ After spraying the fine particles on the water-resistant paper, it is coated with molten low-density polyethylene, and at the same time, the coated paperboard is pressure-bonded, and coated paperboard / low-density polyethylene /
A laminated paperboard made of super absorbent resin / water resistant paper was obtained.
得られた貼合板紙を用い、耐水紙が内面となるように菓
子用包装箱を製函し、蒸気で蒸した饅頭を包んだとこ
ろ、約１時間後、箱の硬さは変化せず、饅頭に水滴が再
付着することなく、また、耐水紙が水で濡れても繊維が
剥離することなく良好であった。Using the obtained laminated paperboard, a confectionery packaging box was boxed so that the waterproof paper was on the inside, and the steamed steamed bun was wrapped, and after about 1 hour, the hardness of the box did not change, Water droplets did not reattach to the bun, and the fibers were not peeled off even when the waterproof paper was wet with water.
なお、製函時貼合板紙を切断するも、切断面より高吸水
性樹脂の粒子が離脱することなく、従って、食品を汚す
恐れもなかった。When the laminated paperboard was cut during box making, the particles of the superabsorbent resin did not separate from the cut surface, and therefore there was no risk of soiling the food.
実施例２ 未晒針葉樹クラフトパルプを主原料として坪量75g/m2に
抄造したクラフト紙の片面に30μのポリエチレンをラミ
ネートした防水クラフト紙のポリエチレン被覆面に、ア
クリル酸・ビニルアルコール共重合体よりなる高吸水性
樹脂の微粒子を散布したのち、ポリエチレンを原料とし
た合成パルプを20重量％配合した針葉樹晒クラフトパル
プよりなる坪量50g/m2の紙を熱圧着し、防水クラフト紙
／高吸水性樹脂／合成パルプ配合紙よりなる貼合紙を得
た。得られた貼合紙を用いて段ボールシートを成型し、
貼合紙が段ボール箱の内面となるように製函した。Example 2 A non-bleached softwood kraft pulp was used as the main raw material, and the polyethylene-coated surface of the waterproof kraft paper in which 30 μm of polyethylene was laminated on one side of the kraft paper made with a basis weight of 75 g / m 2 was coated with an acrylic acid / vinyl alcohol copolymer. After spraying fine particles of super absorbent polymer, a paper of 50 g / m 2 in basis weight made of softwood bleached kraft pulp with 20% by weight of synthetic pulp made from polyethylene as raw material is thermocompressed to make waterproof kraft paper / high water absorption. A laminated paper consisting of a resin / synthetic pulp-blended paper was obtained. Mold a cardboard sheet using the obtained laminated paper,
The box was made so that the laminated paper would be the inner surface of the cardboard box.
得られた段ボール箱を用いてピザパイを包装して約１時
間放置せるに、ピザパイは発生した水蒸気により湿った
状態とならず、焼きたての状態を保ち良好であった。When the pizza pie was packaged in the obtained cardboard box and allowed to stand for about 1 hour, the pizza pie was not moistened by the generated steam, and was kept in a freshly baked state and was good.
（発明の効果） 本発明は、以上述べた如く、高吸水性樹脂の微粒子が、
熱可塑性樹脂層と、耐水紙との溶融面において、熱可塑
性樹脂の表面に圧入されるように保持されているので、
製函時貼合紙を切断するも切断面より高吸水性樹脂の微
粒子が脱落せず、貼合紙を用いて製函した食品包装箱
は、水蒸気を発生する食品を包装し、時間が経過する
も、包装時と同じ状態を保つことができるので、フライ
ドチキン、ピザパイなどを出来たての状態で家庭に配達
または持ち帰ることができる。(Effects of the Invention) As described above, the present invention is characterized in that the fine particles of the super absorbent polymer are
At the melting surface of the thermoplastic resin layer and the waterproof paper, since it is held so as to be pressed into the surface of the thermoplastic resin,
Even when the laminated paper is cut during box making, the fine particles of the super absorbent resin do not fall off from the cut surface, and the food packaging box made by using the pasted paper is packed with water vapor-generating food and the time has passed. However, since it can be kept in the same condition as when it was packaged, you can deliver or take fried chicken, pizza pie, etc. to your home in the fresh state.
また、食品に接する面が耐水紙で形成されているので水
に濡れた食品を包装するも、耐水紙が水で濡れても破れ
たり、繊維が脱落し、食品に付着する恐れもなく、高吸
水性樹脂と紙、板紙との間に熱可塑性樹脂層または熱可
塑性樹脂フィルムがあり水蒸気を遮断するので、食品包
装箱の板紙や段ボールが吸湿のために剛度が低下して箱
が変形したり、多少積重ねても箱がつぶれる恐れもなく
なるものである。Also, since the surface that comes in contact with food is formed of waterproof paper, you can package food that is wet with water, but even if the waterproof paper gets wet with water, it will not tear or fibers will fall off, and it will not adhere to food. Since there is a thermoplastic resin layer or a thermoplastic resin film between the water absorbent resin and the paper or paperboard to block water vapor, the paperboard or corrugated board of the food packaging box loses rigidity due to moisture absorption, and the box may be deformed. Even if they are stacked a little, there is no risk of the boxes being crushed.
Claims (2)
板紙の裏面に溶融した熱可塑性樹脂で溶着するに際し、
耐水紙と熱可塑性樹脂の間に高吸水性樹脂の微粒子を該
熱可塑性樹脂の表面に圧入保持せしめてなる貼合板紙
を、耐水紙が箱の内面となるよう製函したことを特徴と
する吸水性を有する食品包装箱。1. When welding a water resistant paper made by adding a water resistance enhancer to the back of a paperboard with a molten thermoplastic resin,
Characterized in that a laminated paperboard in which fine particles of a highly water-absorbent resin are press-fitted and held on the surface of the thermoplastic resin between the waterproof paper and the thermoplastic resin is made so that the waterproof paper becomes the inner surface of the box. Food packaging box with water absorption.
た耐水紙を熱可塑性樹脂フィルムで溶着するに際し、耐
水紙と熱可塑性樹脂フィルム間に高吸水性樹脂の微粒子
を該熱可塑性樹脂フィルム表面に圧入保持せしめてなる
貼合紙又は貼合板紙を段ボールシートの内面ライナーと
して耐水紙が箱の内面側に位置するよう貼合製函したこ
とを特徴とする吸水性を有する食品包装箱。2. When a water resistant paper produced by mixing paper or paperboard and synthetic pulp is fused with a thermoplastic resin film, fine particles of a super absorbent resin are provided between the water resistant paper and the thermoplastic resin film. A water-absorbing food packaging box, characterized in that a laminated paper or a laminated paperboard, which is press-fitted and held on the surface, is used as an inner liner of a corrugated cardboard to form a water-resistant paper on the inner side of the box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63160332A JPH06104355B2 (en) | 1988-06-28 | 1988-06-28 | Water-absorbent food packaging box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63160332A JPH06104355B2 (en) | 1988-06-28 | 1988-06-28 | Water-absorbent food packaging box |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH028048A JPH028048A (en) | 1990-01-11 |
| JPH06104355B2 true JPH06104355B2 (en) | 1994-12-21 |
Family
ID=15712679
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63160332A Expired - Lifetime JPH06104355B2 (en) | 1988-06-28 | 1988-06-28 | Water-absorbent food packaging box |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06104355B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2781259B2 (en) * | 1990-05-30 | 1998-07-30 | ユニ・チャーム株式会社 | Hygroscopic and water-absorbent corrugated packaging materials |
| JP2569953B2 (en) * | 1990-11-30 | 1997-01-08 | 凸版印刷株式会社 | Method for producing liquid-absorbent sheet |
| JP2590795B2 (en) * | 1991-04-16 | 1997-03-12 | 日立電線株式会社 | Waterproof sheet with nonwoven fabric and method for producing the same |
| JP2007216985A (en) * | 2006-02-14 | 2007-08-30 | Showa Denko Plastic Products Co Ltd | Packaging material having dehydrating function |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5987940U (en) * | 1982-12-02 | 1984-06-14 | 日之出工業株式会社 | Drip-proof sheet |
| JPS6167120U (en) * | 1984-10-09 | 1986-05-08 |
-
1988
- 1988-06-28 JP JP63160332A patent/JPH06104355B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH028048A (en) | 1990-01-11 |
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