JPH07197395A - Paper for simply steaming bag for food and its production - Google Patents

Abstract

PURPOSE:To obtain paper for a simply steaming bag for a food capable of providing a good steamed food by sealing the food to be steamed therein and boiling the bag in hot water. CONSTITUTION:This paper for a simply steaming bag uses papermaking wood pulp and thermoplastic synthetic pulp as main raw materials, uses the main raw materials and further papermaking secondary chemicals such as a sizing agent or a paper strengthening agent as secondary raw materials or is prepared by coating one surface thereof with a heat-resistant water repellent or heating the paper at a higher temperature than the melting point of the thermoplastic synthetic pulp used. Furthermore, this method for producing the paper is provided.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】本発明は、蒸し食品、例えば鰻
頭、中華鰻頭、パン、ぎょうざ、しゅうまい等を蒸し器
を使用せず鍋等の熱湯中で蒸す際に使用される食品用簡
易蒸し袋用紙に関するものであるFIELD OF THE INVENTION The present invention relates to a simple steaming process for foods used for steaming steamed foods such as eel, Chinese eel, bread, gyoza, and sushi in hot water such as a pan without using a steamer. It is about bag paper

【０００２】[0002]

【従来の技術】従来、蒸し食品の鰻頭、中華鰻頭、パ
ン、ぎょうざ、しゅうまい等の蒸し食品は、蒸籠等の蒸
し器を使用し、湯気を通して蒸す方法がとられてきた
が、近時、蒸し食品を特殊な袋に封入して、普通の鍋や
飯ごうで湯を沸かし、熱湯中に投入することにより蒸す
方法が提案されるようになってきた。2. Description of the Related Art Conventionally, steamed foods such as eel, Chinese eel, bread, gyoza, and shimai have been steamed with steam using a steamer such as a basket. A method has been proposed in which steamed foods are enclosed in a special bag, boiled in an ordinary pot or rice bowl, and then poured into boiling water to steam.

【０００３】即ち、実公平２−４４７１６号にみられる
２軸延伸ポリエチレンの多孔フィルムを使用したもの、
特開平４−１２９５０９号のセロハンと紙を接着剤を介
して貼合し、紙面を内面として製袋したもの等が提案さ
れ使用されるようになってきた。That is, using a biaxially stretched polyethylene porous film found in Japanese Utility Model Publication No. 2-44716,
Japanese Patent Application Laid-Open No. 4-129509 proposes and has been used in which cellophane and paper are pasted together with an adhesive, and a bag is made with the paper surface as the inner surface.

【０００４】[0004]

【発明が解決しようとする課題】最近の新世代に属する
核家族が構成する家庭内には、蒸し器は必ずしも一般化
して普及してはおらず、ましてや登山、オートキャンプ
等の屋外における炊飯時には、特別な調理器具に属する
蒸し器を持参することは稀であり、為に蒸し食品の調理
に支障を来す場合が多かった。又、店頭で蒸して売られ
ている蒸し食品は、蒸し器で蒸したものを紙袋やポり袋
に入れて消費者に手渡されるが、紙袋の場合は蒸し食品
の水分を過剰に吸収して食品の水分が過小となり、皺が
入って外観と食味を低下せしめ、ポリ袋の場合は逆に水
分を全く吸収しない為に、水蒸気が冷却して凝集し、水
滴となって袋の底に溜まって蒸し食品を部分的に濡らす
等、これまた食味にマイナスの影響を与える他、冷めや
すい等の問題点があった。[Problems to be Solved by the Invention] Steamers have not necessarily become popular in households made up of recent new generation nuclear families, let alone special rice cooking during outdoor cooking such as mountain climbing and auto camping. It is rare to bring a steamer that belongs to a different cooking utensil, and this often hinders the cooking of steamed food. In addition, steamed foods that are steamed and sold at stores are handed to consumers by putting the steamed foods in a steamer in a paper bag or a plastic bag. The water content in the bag is too small and wrinkled to reduce the appearance and taste.In the case of a plastic bag, on the contrary, it absorbs no water, so the water vapor cools and agglomerates, forming water droplets and collecting at the bottom of the bag. There are problems that the steamed food is partially wetted, which also has a negative influence on the taste, and that it is easy to cool.

【０００５】この点に着目して近時、蒸し食品を特殊な
袋に封入して普通の鍋や飯ごうで熱湯中に投下して調理
する蒸し袋が登場してきたが、実公平２−４４７１６号
は２軸延伸ポリエチレンの多孔フィルムより構成されて
いる為、使用時、容器の内壁にフィルムが接触すると耐
熱性に劣る為溶融破損しやすく、又、吸水性が無いため
調理した食品を取り出す際に冷却した蒸気が凝縮した水
滴が食品に滴下もしくは付着して蒸し食品の味覚や外観
を落とすという欠陥があった。Focusing on this point, recently, a steaming bag has been introduced in which steamed food is enclosed in a special bag and dropped into boiling water with an ordinary pot or rice bowl for cooking. Is composed of a biaxially oriented polyethylene porous film, so when in use, the film is inferior in heat resistance if it comes into contact with the inner wall of the container, and is easily melt-damaged. There is a defect that water droplets that are condensed from the cooled steam are dropped or adhered to the food to deteriorate the taste and appearance of the steamed food.

【０００６】又、特開平４−１２９５０９号はセロハン
と紙を接着剤を介して貼合して紙面を内面として製袋し
たものであり、耐熱性、吸水性に優れており、上記した
欠点はないものの、セロハンと紙の水蒸気の通過する微
細孔を塞がない程度の接着剤の量と質の選定が難しく、
又、貼合工程が介在する為製造コストが大となる等の問
題点がある。Further, Japanese Patent Laid-Open No. 4-129509 discloses a bag made by bonding cellophane and paper with an adhesive, with the paper surface being the inner surface, and is excellent in heat resistance and water absorption. Although it is not available, it is difficult to select the amount and quality of adhesive that does not block the fine pores through which cellophane and paper vapor pass.
Further, there is a problem that the manufacturing cost becomes high because the laminating step is involved.

【０００７】本発明は、上記したごとき従来の簡易蒸し
袋の欠点である熱溶融性プラスチックであることによる
耐熱性の不足により、調理時、鍋などの壁面に接触して
溶融破袋したり、吸水性がないことにより袋内部への透
過水蒸気が凝縮した水分によって被包装食品が濡れて食
味を低下せしめることがなく、又、蒸し袋用紙や袋の製
造時に接着剤による貼合などの処理がなく、このため耐
水性、耐熱性に優れ、製袋時にヒートシール可能な簡易
蒸し袋用紙を提供するものである。In the present invention, due to the lack of heat resistance due to the heat-melting plastic, which is a drawback of the conventional simple steaming bag as described above, the wall surface of a pot or the like is melted and broken during cooking, Due to the lack of water absorption, the moisture condensing the permeated water vapor inside the bag does not wet the food to be packaged and deteriorates the taste, and the processing such as bonding with an adhesive when manufacturing steamed bag paper or bags is not required. Therefore, the present invention provides a simple steaming bag paper which is excellent in water resistance and heat resistance and can be heat-sealed during bag manufacturing.

【０００８】[0008]

【課題を解決するための手段】本発明の食品用簡易蒸し
袋用紙は製紙用木材繊維パルプ（以下、木材パルプと略
称する。）３５〜７５部と熱可塑性合成パルプ（以下、
合成パルプと略称する。）６５〜２５部を配合、叩解
し、抄紙することにより解決せるものである。ここで合
成パルプ使用の目的の一つは、製袋時、或いは調理時に
袋に内容物を入れ封をする際のヒートシール性を発現せ
しめることにある。即ち、ヒートシール性を付与するこ
とにより、製袋時等に接着剤を使用する必要がなく加工
に便であるばかりでなく、調理時等に接着剤の剥離によ
る破袋のトラブルも防げる。又、その配合率が２５％以
下になるとヒートシール性が弱くなり調理時等にヒート
シール部分より破袋が生じ、又、６５％以上になるとヒ
ートシール性は満足し得るが、紙としての強度が低下し
袋用紙として耐え得るものが得られないこと判った。
又、袋用紙としての強度を得る為に木材パルプを３５〜
７５部配合しガーレー透気度（ＪＩＳ Ｐ ８１１７
「紙及び板紙の透気度試験方法」による。）１０〜１０
０秒の範囲となるように叩解調整して抄紙すると良い。
これは透気度が１００秒以上では袋の内部に侵入した水
蒸気が食品を蒸した後、再び袋の外部に透過しがたくな
り、水滴となって内部に残留するため食品に付着して食
味にマイナスの影響を与え、１０秒以下では熱水が袋内
に容易に浸透しやすくるからである。尚、叩解した木材
パルプに離解した合成パルプを配合、抄紙しても良い。The simple steaming bag paper for food of the present invention comprises 35 to 75 parts of wood fiber pulp for papermaking (hereinafter abbreviated as wood pulp) and thermoplastic synthetic pulp (hereinafter abbreviated as wood pulp).
It is abbreviated as synthetic pulp. ) 65-25 parts are blended, beaten, and paper-made to solve the problem. Here, one of the purposes of using the synthetic pulp is to exert heat sealability when the contents are put in the bag and sealed during bag making or cooking. That is, by imparting the heat-sealing property, it is not necessary to use an adhesive at the time of bag making and the like, which is not only convenient for processing but also the trouble of bag breakage due to peeling of the adhesive at the time of cooking can be prevented. Further, if the compounding rate is 25% or less, the heat-sealing property becomes weak and the bag is ruptured from the heat-sealing portion at the time of cooking, and if it is 65% or more, the heat-sealing property is satisfactory, but the strength as paper is high. It was found that the value of the bag paper was not obtained and that it could not be obtained as bag paper.
Also, in order to obtain strength as bag paper, wood pulp is used in an amount of 35-35.
Gurley Air Permeability (JIS P 8117)
According to "Air permeability test method for paper and board". ) 10-10
It is advisable to adjust the beating to make the paper within the range of 0 seconds.
This is because when the air permeability is 100 seconds or more, the steam that has entered the inside of the bag steams the food and then becomes difficult to permeate to the outside of the bag again. This has a negative effect on the hot water and easily penetrates the hot water into the bag for 10 seconds or less. Incidentally, beaten wood pulp may be blended with disintegrated synthetic pulp to make paper.

【０００９】使用する合成パルプは三井石油化学工業社
製のＳＷＰが最も一般的に使用されるが、これはポリエ
チレン樹脂を繊維状に溶融紡糸したものである。その
他、チッソ社製のポリプロピレンを核とし、ポリエチレ
ンを鞘としたＥＳ繊維、大和紡社製の熱融着ポリプロピ
レン樹脂のＣＣＰ繊維、芯が高融点ポリエステルで、鞘
が低融点ポリエステル、ポリプロピレン、ポリエチレン
等よりなる二重構造を持った繊維等多数のグレードが市
販されており、更に、帝人社、クラレ社等も同様の合成
繊維を製造しており、その何れも本発明に使用出来る。
一方、強度保持の為配合する木材パルプは木材を原料と
するものに限らず、植物性天然繊維パルプであれば何れ
も使用出来る。The most commonly used synthetic pulp is SWP manufactured by Mitsui Petrochemical Co., Ltd. This is a melt-spun fiber of polyethylene resin. In addition, ES fiber with polypropylene made by Chisso as core and polyethylene as sheath, CCP fiber of heat fusion polypropylene resin made by Daiwabo Co., Ltd., high melting point polyester with core, low melting point polyester with polypropylene, polypropylene, polyethylene, etc. A large number of grades such as a fiber having a double structure are commercially available, and Teijin Co., Kuraray Co., etc. also manufacture similar synthetic fibers, any of which can be used in the present invention.
On the other hand, the wood pulp to be blended to maintain the strength is not limited to wood as a raw material, and any vegetable natural fiber pulp can be used.

【００１０】抄紙後、合成パルプの溶融点以上の温度に
加熱処理することにより紙の特性が変化する。加熱によ
り溶融した合成パルプは、合成パルプ及び木材パルプの
繊維の交点を接着して乾紙及び湿紙強度を向上せしめる
のみならず、パルプ間の大きな空隙を埋め、水蒸気は通
過するが水及び熱水は透過しない微細孔構造を形成す
る。この加熱溶融加工法に使用する合成パルプは、多数
の試験の結果、繊維長が比較的大のものが良好な結果を
示した。After papermaking, the properties of the paper are changed by heating it to a temperature above the melting point of the synthetic pulp. The synthetic pulp melted by heating not only bonds the intersections of the fibers of the synthetic pulp and the wood pulp to improve the strength of dry paper and wet paper, but also fills the large voids between the pulps and allows water vapor and water It forms a microporous structure that is impermeable to water. As for the synthetic pulp used in this heat-melt processing method, as a result of a number of tests, those having a relatively long fiber length showed good results.

【００１１】サイズ剤を加えることにより、同時に配合
する木材パルプに疏水性を与え、或いは繊維間の空隙を
埋め、水の浸透防止効果を更に高め、より好ましい結果
が得られることが判った。即ち、合成パルプの持つ特性
をより大きく引き出す為には適度の熱処理が必要だが、
木材パルプにサイズ効果を与えることにより高度の熱処
理をおこなうことなく効果が期待できるものである。It has been found that the addition of the sizing agent imparts hydrophobicity to the wood pulp to be blended at the same time or fills voids between the fibers to further enhance the water permeation-preventing effect and more preferable results can be obtained. In other words, moderate heat treatment is necessary to bring out the characteristics of synthetic pulp to a greater extent,
By giving a size effect to wood pulp, the effect can be expected without performing a high-level heat treatment.

【００１２】サイズ剤としては製紙用に広く使用されて
いるロジン系サイズ剤、合成サイズ剤、石油樹脂系サイ
ズ剤、中性サイズ剤、ワックス系サイズ剤等の内添サイ
ズ剤は全て使用出来るが、強化ロジンサイズ剤及び中性
サイズ剤のアルキルケテンダイマー系のものが効果が高
い。又、上記各種サイズ剤の２種以上の併用も可能であ
る。例えば、アルキルケテンダイマー系の多量使用では
得られた紙が滑り易くヒートシール性をも低下せしめる
等問題となる場合があるが、カチオン性スチレン系樹脂
サイズ剤を併用するとその使用量を減らすことが出来、
この問題が解決されるとともに浸水防止効果も満足でき
るものが得られ、コスト的にも有利となる。As the sizing agent, all of the rosin-based sizing agents, synthetic sizing agents, petroleum resin-based sizing agents, neutral sizing agents, wax-based sizing agents and the like which are widely used for papermaking can be used. , The reinforced rosin sizing agent and the neutral sizing agent of alkyl ketene dimer type are highly effective. It is also possible to use two or more of the various sizing agents in combination. For example, when a large amount of alkyl ketene dimer is used, the obtained paper may be slippery and the heat sealability may be deteriorated.However, if a cationic styrene resin sizing agent is used in combination, the amount used may be reduced. Done,
In addition to solving this problem, it is possible to obtain a product that also satisfies the effect of preventing water infiltration, which is advantageous in terms of cost.

【００１３】合成パルプの配合は、合成パルプ、及び、
木材パルプの種類、抄造した紙の坪量等により紙強度が
低下し製袋作業時或いは内容物挿入時に破袋するおそれ
があり、一方、湿潤紙強度は熱処理により発現するが充
分とはいえず蒸し調理時に破袋する場合がある。その対
策として、乾燥紙力増強剤及び／又は湿潤紙力増強剤を
使用すると良い。乾燥紙力増強剤としては澱粉、変性澱
粉、植物ガム、カルボキシメチルセルロース、ポリビニ
ルアルコ−−ル、ポリアクリルアマイド等、湿潤紙力増
強剤としては尿素・ホルムアルデヒド樹脂、メラミン・
ホルムアルデヒド樹脂、ジアルデヒド澱粉、エポキシ系
ポリアミド、メチロール系ポリアミド等が抄紙用として
広く使用されているが、その何れの使用も効果が有る。
一般的にはポリアクリルアマイド又は／及びエポキシ系
ポリアミドの使用が有効である。The composition of the synthetic pulp is as follows:
The paper strength may decrease due to the type of wood pulp, the basis weight of the paper produced, etc., and the bag may be broken during bag making work or when the contents are inserted.On the other hand, wet paper strength is expressed by heat treatment but is not sufficient. Bags may break during steam cooking. As a countermeasure, it is preferable to use a dry strength agent and / or a wet strength agent. Dry paper strengthening agents include starch, modified starch, vegetable gum, carboxymethyl cellulose, polyvinyl alcohol, polyacrylic amide, etc.Wet strength enhancing agents include urea-formaldehyde resin, melamine
Formaldehyde resin, dialdehyde starch, epoxy-based polyamide, methylol-based polyamide and the like are widely used for papermaking, and any of them is effective.
Generally, the use of polyacrylic amide and / or epoxy polyamide is effective.

【００１４】又、浸水防止の対策を検討するに、以上述
べた方法の他に耐水性に優れたはっ水剤を抄紙機に設け
られたサイズプレスその他の塗被装置により、紙の片面
に塗被すると更に良好な結果が得られることが判った。
即ち、袋として使用する時にはこの塗被面（以下、この
面を表面と記述する。）を袋の外側とし、使用するはつ
水剤は、ワックス系、シリコン系、弗素系に大別される
が、最も廉価なワックス系はっ水剤は、多量に用いると
耐熱性に劣っているために合成パルプの加熱溶融時およ
び製袋のヒートシール時に溶融して紙の反対面に浸出し
てヒートシール強度を低下せしめ破袋の原因となるので
シリコン、弗素系などの耐熱性はっ水剤がより好ましく
使用出来る。はつ水剤の塗被は、サイズプレスにより行
なうことが最も簡便かつコストの点からも効果的であ
り、その他のオンマシン、オフマシンコーターも使用す
ることが出来る。尚、本発明による食品用簡易蒸し袋用
紙に使用するパルプ、薬品類は食品衛生上問題の無いも
のを選定することは言うまでもない。In addition to the method described above, a water repellent having excellent water resistance is applied to one side of the paper by using a size press or other coating device provided in the paper machine in addition to the method described above. It has been found that even better results are obtained when coated.
That is, when used as a bag, this coated surface (hereinafter, this surface is referred to as the surface) is the outside of the bag, and the water repellent used is roughly classified into wax type, silicone type, and fluorine type. However, the most inexpensive wax-based water repellant has poor heat resistance when used in large amounts, so it melts during heating and melting of synthetic pulp and heat sealing during bag making, and is leached on the opposite side of the paper to heat it. A heat-resistant water-repellent agent such as silicon or fluorine is more preferably used because it lowers the seal strength and causes bag breakage. The coating of the water repellent is most easily performed by a size press in terms of cost and is effective, and other on-machine and off-machine coaters can be used. Needless to say, the pulp and chemicals used for the simple steaming bag paper for food according to the present invention should be selected so as not to cause food hygiene problems.

【００１５】このようにして仕上げられた簡易蒸し袋用
紙は微細孔の口径が５μｍ以下となり、水蒸気は通すが
熱水は通さず、又、食品の蒸し調理中冷やされた余剰の
水蒸気は水滴として袋内部に留まることなく、再び微細
孔を通して袋外部に放出され、新たな加熱水蒸気が繰り
返し透過するため、食品の温度が良好に上昇して蒸し時
間が短時間に終了するなど、簡易蒸し袋として好適に使
用出来る。又、構成パルプとし親水性の木材パルプを配
合してあるので袋用紙は適度の吸水性があり、蒸し袋内
部に透過した水蒸気が調理終了後一部冷却結露して水滴
となっても吸収され、内部で大きな水滴に成長し食品に
付着して濡らすことはなく、蒸し食品の品質低下を来た
さないことが判り、本発明を完成するに至ったものであ
る。The simple steaming bag paper finished in this manner has fine pores with a diameter of 5 μm or less, which allows water vapor to pass through but not hot water, and excess steam chilled during steam cooking of food is in the form of water droplets. Instead of staying inside the bag, it is released to the outside of the bag through the fine holes again, and new heated steam repeatedly permeates, so the temperature of the food rises well and the steaming time is completed in a short time. It can be used suitably. In addition, since the hydrophilic paper pulp is mixed as the constituent pulp, the bag paper has a moderate water absorbency, and the steam that has penetrated into the steaming bag is absorbed even if it becomes part of the cooling dew after cooking is completed. It was found that the inside of the present invention does not grow into large water droplets and adheres to foods to wet them, and that the quality of steamed foods does not deteriorate, and the present invention has been completed.

【００１６】[0016]

【実施例】以下に本発明を実施例により説明する。ここ
で使用する部、％は重量部、重量％である。尚、以下の
実施例における食品用簡易蒸し袋用紙の適否判定基準と
その試験方法は以下のとおりである。EXAMPLES The present invention will be described below with reference to examples. Parts and% used herein are parts by weight and% by weight. In addition, the suitability judgment standard and the test method of the simple steaming bag paper for foods in the following examples are as follows.

【００１７】（１）ヒートシール強度 ２５０ｇ／幅
１５ｍｍ 以上 紙の幅方向１５ｍｍ・流れ方向３００ｍｍの試験片を表
面を外側にして幅方向が折り曲げ辺になるように折り曲
げ、折り曲げ端より２０ｍｍの位置を幅方向にシール器
にて温度２００℃、圧力２ｋｇ／ｃｍ^２、時間１秒間の
条件下で幅１０ｍｍにシールする。シール部を中心に両
端を外側にＴ字形とし、引張強さ試験機にチャック間隔
２００ｍｍで取り付けて引っ張り、シール部の破断強度
（ｇ）をヒートシール強度とする。(1) Heat seal strength 250 g / width 15 mm or more A test piece having a width direction of 15 mm and a flow direction of 300 mm of paper is bent with the surface as the outside so that the width direction becomes a bending side, and a position 20 mm from the bending end is placed. A width of 10 mm is sealed under the conditions of a temperature of 200 ° C., a pressure of 2 kg / cm ² , and a time of 1 second in a width direction with a sealer. Both ends are T-shaped with the seal portion as the center, and the seal portion is attached to a tensile strength tester at a chuck interval of 200 mm and pulled, and the breaking strength (g) of the seal portion is taken as the heat seal strength.

【００１８】（２）蒸し調理特性 紙の幅方向１２０ｍｍ・流れ方向１８０ｍｍの試験片を
表面を外側にして幅方向が折り曲げ辺になるように折り
曲げ、折り曲げ辺との対向辺及び残り２辺の１辺を
（１）項と同じ条件下にてヒートシールして縦長の袋と
する。この袋に調理物を封入後開口辺を二重に折り込
み、沸騰水中に入れ１５分間調理後、下記の項目につき
測定又は観察する。 袋（調理物を取り出した後の）の重量増加率（％） ４０％以下 調理物の重量増加率（％） １２％以下 調理中及び調理後の袋の破損の有無、水漏れの状況と、調理物への水滴の付着 状態を観察。(2) Steam cooking characteristics A test piece having a width direction of 120 mm and a flow direction of 180 mm is bent so that the width direction becomes a bending side with the surface as the outer side, and the side opposite to the bending side and the remaining two sides 1 The sides are heat-sealed under the same conditions as in item (1) to form a vertically long bag. After enclosing the food in this bag, double fold the opening side, put in boiling water, cook for 15 minutes, and then measure or observe the following items. Weight increase rate (%) of the bag (after removing the food) 40% or less Weight increase rate of the food (%) 12% or less Whether or not the bag is damaged during and after cooking, and the state of water leakage, Observe how water drops adhere to the food.

【００１９】（３）用紙の紙質 （２）項の蒸し調理特性の代替特性として ステキヒト・サイズ度（以下、サイズ度と略称する。） １００秒以上 ＪＩＳ Ｐ ８１２２「紙のステキヒト・サイズ度試験方法」による。 熱水サイズ度 ５０分以上 １０×１０ｃｍの試験片の裏面に赤チョークを塗り、そ
の面を内側にして４辺を折り曲げて箱舟をつくる。これ
を８０℃の温水に浮かベストップウォッチにて時間を測
定、チューク面にマッチ棒の頭位の水がしみだした時点
を終点とし、所要時間（分）を熱水サイズ度とする。(3) Paper quality of paper As an alternative characteristic of the steaming cooking characteristics of the item (2), Steckigt sizing degree (hereinafter abbreviated as sizing degree) 100 seconds or more JIS P 8122 “Paper's Steckigt sizing degree test method” "by. Hot water size degree 50 minutes or more Apply red chalk on the back surface of a 10 × 10 cm test piece, and bend the four sides with the surface inside to form an ark. Float this in warm water of 80 ° C and measure the time with a Vestopwatch. The time when the water at the head of the matchstick oozes on the chew surface is the end point, and the required time (minutes) is the hot water sizing degree.

【００２０】実施例１ 針葉樹晒クラフトパルプ（以下、ＮＢＫＰと略称す
る。）５０部に対して三井石油化学工業社製のＳＷＰ−
Ｅ４００を５０部配合しＴＡＰＰＩ標準ビーターにてフ
りーネス（ＪＩＳ Ｐ ８１２１「パルプのろ水度試験
方法」の「カナダ標準形」による。）３６０ｍｌに叩
解、各種サイズ剤を単独で所要量添加し、手抄装置（Ｊ
ＩＳ Ｐ ８２０９「パルプ試験用手すき紙調製方法」
記載の装置。）にて７０ｇ／ｍ^２の紙を調製、各々の蒸
し調理特性を試験、各種サイズ剤の効果を比較した。そ
の結果を以下に示す。Example 1 To 50 parts of softwood bleached kraft pulp (hereinafter abbreviated as NBKP), SWP-manufactured by Mitsui Petrochemical Co., Ltd.
50 parts of E400 was blended and beaten to 360 ml with a TAPPI standard beater (according to "Canadian standard form" of JIS P 8121 "Pulp freeness test method"), and the required amount of each sizing agent was added alone. , Hand machine (J
ISP 8209 "Pulp test handsheet preparation method"
The described device. ), 70 g / m ² of paper was prepared, each steaming cooking characteristic was tested, and the effect of various sizing agents was compared. The results are shown below.

【００２１】強化ロジン系サイズ剤１．０％添加の結
果、サイズ度１４０秒、熱水サイズ度１２０分以上であ
り、蒸し調理後の重量増加率は袋３８％、調理物１１％
であり、袋の水濡れ、調理物への水滴の付着も無く外観
は良好であった。アルキルケテンダイマー系中性サイズ
剤１．０％添加の結果、サイズ度１９０秒、熱水サイズ
度１２１分以上、蒸し調理後の重量増加率は袋３３％、
調理物１２％で、同様外観も良好であった。アルケニル
コハク酸系中性サイズ剤では効果がやや不足で、２．０
％の添加でサイズ度１３０秒、熱水サイズ度４５分、蒸
し調理後の重量増加率は袋３９％、調理物１２％で、外
観はほぼ良好であった。合成サイズ剤、石油樹脂系サイ
ズ剤、ワックス系サイズ剤等も使用可能であったが、前
３者並の効果を得るためには３〜５％の添加を必要とし
た。以上、本発明の食品用簡易蒸し袋用紙の製造に使用
するサイズ剤としては強化ロジンサイズ剤と中性サイズ
剤が有利であるとの結果が得られた。As a result of adding 1.0% of the reinforced rosin-based sizing agent, the sizing degree is 140 seconds and the hot water sizing degree is 120 minutes or more. The weight increase rate after steam cooking is 38% in the bag and 11% in the cooked food.
The appearance was good without the bag getting wet and water droplets not adhering to the food. As a result of adding 1.0% of alkyl ketene dimer type neutral sizing agent, the sizing degree is 190 seconds, the hot water sizing degree is 121 minutes or more, and the weight increase rate after steam cooking is 33% in the bag,
The appearance was also good with 12% of the cooked food. Alkenyl succinic acid-based neutral sizing agent is slightly less effective,
%, The sizing degree was 130 seconds, the hot water sizing degree was 45 minutes, the weight increase rate after steam cooking was 39% in the bag, and the cooked material was 12%. The appearance was almost good. Synthetic sizing agents, petroleum resin-based sizing agents, wax-based sizing agents, etc. could also be used, but in order to obtain the same effect as the former three, it was necessary to add 3 to 5%. As described above, it was found that the reinforced rosin sizing agent and the neutral sizing agent are advantageous as the sizing agent used in the production of the simple steaming bag paper for food of the present invention.

【００２２】実施例２ ＮＢＫＰ５０部に対して三井石油化学社製ＳＷＰ−Ｅ６
００を５０部配合し、レファイナーにてフリーネス３２
０ｍｌとなるように叩解する。この叩解パルプ１００部
に対してサイズ剤としてアルキルケテンダイマー系サイ
ズ剤０．３５部、カチオン性スチレン系ガイズ剤０．７
部、乾燥紙力増強剤としてポリアクリルアマイド０．４
部、湿潤紙力増強剤としてエポキシ系ポリアミド０・６
部を配合し、次いで硫酸アルミ８％液２部を加えて攪拌
してこれ等添加剤を定着せしめ紙料とし、長網抄紙機に
よ り秤量７０ｇ／ｍ^２に抄紙した。この紙は、サイズ
度１００秒、熱水サイズ度１２０分以上でり、ヒートシ
ール強度は３７０ｇであった。又、ガーレー透気度は６
０秒であった。このＳＷＰ混抄紙より袋を作製し蒸し調
理特性を試験したところ、調理試験後の重量増加率は袋
３６％、調理物１１％、又、袋の水濡れ、調理物への水
滴の付着もほとんど無く良好な蒸し状態であった。以上
のとおり、カチオン性スチレン系サイズ剤を併用するこ
とによりヒートシール性を損なうことなく、アルキルケ
テンダイマー系サイズ剤単独使用と同等の蒸し調理特性
が得られた。Example 2 MVP, SWP-E6 manufactured by Mitsui Petrochemical Co., Ltd. with respect to 50 parts of NBKP
50 parts of 00 are blended, and the refiner gives 32 freeness.
Beat to 0 ml. With respect to 100 parts of this beaten pulp, 0.35 part of an alkyl ketene dimer sizing agent as a sizing agent and 0.7 of a cationic styrenic sized agent.
Parts, polyacrylic amide 0.4 as a dry paper strengthening agent
Parts, epoxy-based polyamide 0.6 as a wet paper strengthening agent
2 parts of an aluminum sulfate 8% solution were added and stirred to fix these additives to prepare a paper stock, which was then weighed with a Fourdrinier paper machine to a weight of 70 g / m ² . This paper had a sizing degree of 100 seconds, a hot water sizing degree of 120 minutes or more, and a heat seal strength of 370 g. Gurley air permeability is 6
It was 0 seconds. When a bag was prepared from this SWP mixed paper and steaming cooking characteristics were tested, the weight increase rate after the cooking test was 36% for the bag, 11% for the cooked product, and the bag was wet with water, and almost no water droplets adhered to the cooked product. It was in a good steaming state. As described above, by using the cationic styrene-based sizing agent in combination, the steam cooking characteristics equivalent to the use of the alkylketene dimer-based sizing agent alone were obtained without impairing the heat-sealing property.

【００２３】実施例３ 使用するＳＷＰの配合比を４０部とした以外は実施例２
と同様の条件で抄紙し、熱風加熱装置により２４０℃、
３０秒間加熱した。得られた紙はガーレ透気度４５秒、
サイズ度９５秒、熱水サイズ度１２０以上であり、溶融
したＳＷＰが繊維の交点を接着し、しかも加熱時に加圧
工程がないためフィルム状のバリヤー層は形成しておら
ず、大きな孔を塞ぐが０．１〜５μｍの微細孔が多数存
在していて水蒸気を透過するが熱水は透過せず、蒸し調
理特性も重量増加率は袋３８％、調理物１２％と良好な
結果が得られ、抄紙後の加熱処理の効果が確認出来た。Example 3 Example 2 except that the mixing ratio of SWP used was 40 parts.
Paper making under the same conditions as above, 240 ° C by hot air heating device,
Heated for 30 seconds. The obtained paper has a Gurley air permeability of 45 seconds,
The size degree is 95 seconds, the hot water size degree is 120 or more, and the molten SWP adheres the intersections of the fibers, and since there is no pressure step at the time of heating, a film-like barrier layer is not formed and large holes are blocked. Has a large number of micropores of 0.1 to 5 μm and is permeable to water vapor but not to hot water, and the steam cooking characteristics have good weight increase rate of 38% in bag and 12% in cooked food. , The effect of heat treatment after papermaking was confirmed.

【００２４】実施例４ 使用するＳＷＰをＥ６００より繊維長小のＥ４００と
し、配合比を３５部とした以外は実施例２と同じ薬品添
加率の紙料を用いて同様に抄紙し、抄紙機上のサイズプ
レスにより弗素系はつ水剤１２％液を紙の片面に固形分
０．３ｇ／ｍ^２となるように塗布し、秤量７０ｇ／ｍ^２
に抄紙した。この紙はガーレー透気度９０秒、サイズ度
１２０秒、熱水サイズ度（はつ水剤塗布面接水側）１２
０分以上、ヒートシール強度３２０ｇであった。又、は
っ水剤の塗布面を外側として袋を作製し、蒸し調理特性
を試験したところその重量増加率は袋３８％、調理物１
２％で、外観も良好であった。即ち、ＳＷＰを繊維長小
のＥ４００とし、しかも配合比を３５部に減らしてもは
っ水剤の塗布により実施例２と同等の結果が得られ、品
質上、経済上のはっ水剤塗布の有効性が確認できた。Example 4 Paper was made in the same manner as in Example 2 except that the SWP used was E400, which had a smaller fiber length than E600, and the compounding ratio was 35 parts. A 12% solution of a fluorinated water repellent is applied to one side of the paper by a size press to a solid content of 0.3 g / m ² and weighed 70 g / m ^2.
Paper was made. This paper has a Gurley air permeability of 90 seconds, a sizing degree of 120 seconds, and a hot water sizing degree (the water-repellent side to which the water repellent is applied) 12
The heat seal strength was 320 g for 0 minutes or longer. A bag was prepared with the water-repellent coating surface on the outside, and the steam cooking characteristics were tested.
At 2%, the appearance was also good. That is, the same results as in Example 2 were obtained by applying the water repellent agent even if the SWP was E400 having a small fiber length and the compounding ratio was reduced to 35 parts, and the water repellent agent was applied in terms of quality and economy. The effectiveness of was confirmed.

【００２５】[0025]

【発明の効果】本発明になる食品用蒸し袋用紙は熱溶融
性合成パルプを使用することによりヒートシールが可能
であり、製袋時に接着剤などを使用する必要が無い。
又、該熱溶融性合成パルプの疏水性に加えてサイズ剤、
紙力増強剤の内添、必要に応じてはっ水剤をサイズプレ
スなどで紙の片面にコートし、或いは、得られた紙を加
熱処理することにより、水蒸気は通過するが熱水は通さ
ない蒸し袋用の紙を提供することができる。本蒸し袋用
紙は、従来のプラスチック製蒸し袋に見られた、調理
中、鍋の壁面に接触して溶融破袋することがなく、調理
後袋内部での結露により調理物を濡らし食味や外観を損
なうこともなく、更には廉価で供給できる利点を有す
る。The steaming bag paper for food according to the present invention can be heat-sealed by using the heat-melting synthetic pulp, and it is not necessary to use an adhesive or the like at the time of bag making.
In addition to the hydrophobicity of the heat-meltable synthetic pulp, a sizing agent,
By internally adding a paper-strengthening agent and, if necessary, coating a water-repellent agent on one side of the paper with a size press, or by heat-treating the obtained paper, water vapor passes but hot water passes. No steaming bag paper can be provided. The main steaming bag paper does not melt and rupture by contacting the wall surface of the pan during cooking, which is seen in conventional plastic steaming bags. It has an advantage that it can be supplied at a low price without deteriorating.

───────────────────────────────────────────────────── 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 81/34 Ｐ Ｄ２１Ｈ 17/65 (72)発明者 清水 政雄 大阪府大阪市城東区今福西３丁目２番24号 ネクスタ株式会社内 (72)発明者 旭 英樹 大阪府大阪市城東区今福西３丁目２番24号 ネクスタ株式会社内─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁶ Identification number Internal reference number FI Technical display location B65D 81/34 P D21H 17/65 (72) Inventor Masao Shimizu 3 Imafuku Nishi, Joto-ku, Osaka City, Osaka Prefecture 2-24, Nexta Co., Ltd. (72) Inventor Hideki Asahi 3-24-24, Imafukunishi, Joto-ku, Osaka City, Osaka Prefecture

Claims (8)

【特許請求の範囲】[Claims] 【請求項１】 製紙用木材繊維パルプ３５〜７５部と熱
可塑性合成パルプ６５〜２５部の割合よりなり、かつ該
熱可塑性合成パルプの繊維が隣位するパルプ繊維との交
点で溶融結合してなる食品用簡易蒸し袋用紙。1. A ratio of 35 to 75 parts of wood fiber pulp for papermaking and 65 to 25 parts of thermoplastic synthetic pulp, wherein the fibers of the thermoplastic synthetic pulp are melt-bonded at the intersections with the adjacent pulp fibers. Simple steaming bag paper for food. 【請求項２】 請求項１記載の製紙用木材繊維パルプが
サイズ剤で処理されてなる食品用簡易蒸し袋用紙。2. A simple steaming bag paper for foods, which is obtained by treating the wood fiber pulp for papermaking according to claim 1 with a sizing agent. 【請求項３】 請求項１又は２記載の製紙用木材繊維パ
ルプと熱可塑性合成パルプに乾燥紙力増強剤又は／及び
湿潤紙力増強剤が配合されてなる食品用簡易蒸し袋用
紙。3. A simple steaming bag paper for foods, comprising the wood fiber pulp for papermaking according to claim 1 or 2 and a thermoplastic synthetic pulp mixed with a dry paper strength enhancer and / or a wet paper strength enhancer. 【請求項４】 請求項１、２又は３記載の食品用簡易蒸
し袋用紙の片面に耐熱性のはっ水性樹脂を塗被してなる
食品用簡易蒸し袋用紙。4. A simple steam-bag sheet for food, which is obtained by coating a heat-resistant water-repellent resin on one surface of the simple-steam bag sheet for food according to claim 1. 【請求項５】 製紙用木材繊維パルプ３５〜７５部に熱
可塑性合成パルプ６５〜２５部を配合、叩解し、抄造す
るに際し、乾燥工程において、又は抄紙後、該熱可塑性
合成パルプの溶融温度で加熱処理することを特徴とする
食品用簡易蒸し袋用紙の製造方法。5. A mixture of 35 to 75 parts of wood fiber pulp for papermaking and 65 to 25 parts of thermoplastic synthetic pulp, beaten and paper-made at a melting temperature of the thermoplastic synthetic pulp in a drying step or after paper making. A method for producing a simple steaming bag paper for food, which is characterized by heat treatment. 【請求項６】 請求項５記載の食品用簡易蒸し袋用紙の
製造方法において、製紙用木材繊維パルプと熱可塑性合
成パルプを配合、叩解の後のスラリーにサイズ剤を添
加、硫酸アルミで製紙用木材繊維パルプに定着せしめた
ことほ特徴とする食品用簡易蒸し袋用紙。6. The method for producing a simple steam-bag bag for food according to claim 5, wherein wood fiber pulp for papermaking and thermoplastic synthetic pulp are mixed, a sizing agent is added to the slurry after beating, and aluminum sulfate is used for papermaking. A simple steaming bag paper for food, characterized by being fixed on wood fiber pulp. 【請求項７】 請求項５又は６記載の食品用簡易蒸し袋
用紙の製造方法において、製紙用木材繊維パルプと熱可
塑性合成繊維パルプを配合、叩解の後のスラリーに、乾
燥紙力増強剤及び／又は湿潤紙力増強剤を添加、硫酸ア
ルミで製紙用木材繊維パルプと熱可塑性合成パルプに定
着せしめたことを特徴とする食品用簡易蒸し袋用紙の製
造方法。7. The method for producing a simple steaming bag paper for food according to claim 5 or 6, wherein a wood fiber pulp for papermaking and a thermoplastic synthetic fiber pulp are blended, and the slurry after beating is mixed with a dry paper strengthening agent and A method for producing a simple steaming bag paper for foods, which comprises adding a wet paper strengthening agent, and fixing the wood fiber pulp for papermaking and the thermoplastic synthetic pulp with aluminum sulfate. 【請求項８】請求項５、６又は７記載の食品用簡易蒸し
袋用紙の製造方法において、抄造機の乾燥工程のサイズ
プレス等、又はオフ塗工機を用いて食品用簡易蒸し袋用
紙の片面に耐熱性のはつ水性樹脂を０．３％以上塗被し
た後乾燥せしめたことを特徴とする食品用簡易蒸し袋用
紙の製造方法。8. The method for producing a simple steam-bag sheet for food according to claim 5, 6 or 7, wherein the simple steam-bag sheet for food is produced using a size press in a drying step of a paper making machine or an off coater. A method for producing a simple steaming bag paper for foods, characterized in that 0.3% or more of a heat-resistant water-repellent resin is coated on one side and then dried.