JP2004256926A - Oil-resistant/water-resistant sheet and method for producing the same - Google Patents
Oil-resistant/water-resistant sheet and method for producing the same Download PDFInfo
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Abstract
Description
【０００１】
【発明の属する技術分野】
本発明は、耐油性、耐水性、耐熱性に優れるコーティング膜（塗工層）を有するシートおよびその製造方法に関するものであり、特にこのコーティング膜を有するシートは食品加熱用包装紙に好適である。
【０００２】
【従来の技術】
食品包装などに用いられる紙には、食品中の油分と水分をはじき、食品に接していない面に油分と水分がにじみ出ない耐油性と耐水性が必要である。また、食品用包装紙は、食品を包装したまま電子レンジやオーブンなどで加熱されるため耐熱性も必要である。
これらの問題を解決する方法として、単層抄の内添サイズ紙の少なくとも一方の面にノニオン性あるいはカチオン性のポリビニルアルコールの塗工層とフッ素系の耐油剤の塗工層を順次設けた耐油紙の使用が提案されている（特許文献１参照）。
【０００３】
【特許文献１】
特開平７−１２８４９号公報
【０００４】
【発明が解決しようとする課題】
しかしフッ素系の耐油剤は、高温においてフッ化水素、フッ化カルボニル、フッ酸などの有毒なフッ素化合物が発生するとされており、かかる耐油剤を含む食品包装用の耐油紙は、調理中、あるいは使用後廃棄された後の焼却の際にこれらの有毒なフッ素化合物が発生する可能性があり、安全性の面では問題がある。
従って、本発明の目的は、安全で、環境に優しい耐油性・耐水性および耐熱性を有する食品加熱用包装紙などに使用できるシートを提供することである。
【０００５】
【課題を解決するための手段】
本発明者らは、上記のような問題のない安全で、環境に優しい耐油性・耐水性および耐熱性を有するシートを開発すべく鋭意検討した結果、ポリビニルアルコールと天然物由来で食品用途にも使用され、耐水性のある強固な塗膜を形成するセラック（シェラック）を塗膜形成成分として用いることで耐油性、耐水性、耐熱性に優れ、なおかつ食品用途としても安全な食品加熱用包装紙に好適なシートが得られることを見出し、本発明を完成させるに至った。
【０００６】
本発明によれば、基材シートの少なくとも一方の面に、少なくともポリビニルアルコールとセラック（シェラック）を含む塗工層を有することを特徴とする耐油性・耐水性シートおよび基材シートの少なくとも一方の面に、少なくともポリビニルアルコールを含む塗膜と少なくともセラック（シェラック）を含む塗膜が順に形成されてなる塗工層を有することを特徴とする耐油性・耐水性シートならびにこれらのシートの製造方法が提供される。
【０００７】
【発明の実施の形態】
次に好ましい実施形態を挙げて本発明を詳細に説明する。
本発明の耐油性・耐水性シートは、基材シートの片面または両面に、少なくともポリビニルアルコールとセラック（シェラック）を含む塗工層、または少なくともポリビニルアルコールを含む塗膜と少なくともセラック（シェラック）を含む塗膜が順に形成されてなる塗工層を有することが特徴である。
【０００８】
本発明で使用するポリビニルアルコールとしては、部分ケン化型、完全ケン化型（ケン化度９５モル％以上）、あるいはカルボキシル基、スルホン基、アセトアセチル基、シラノール基などで変性されたものが挙げられる。これらは１種または２種以上を混合して用いることができる。重合度は特に限定されないが、通常５００〜３０００の範囲、好ましくは１０００〜２５００の範囲である。重合度が５００未満では造膜が難しく、十分な耐油性が得られない。また、重合度が３０００を超えると溶液の粘度がかなり高くなり、塗工作業が難しくなる。
【０００９】
本発明ではポリビニルアルコールは溶剤に溶解した溶液（塗工液）として使用されるが、溶剤としてはポリビニルアルコールを溶解する溶剤であれば特に限定されない。例えば、水、アルコール（メチルアルコール、エチルアルコール、ｎ−プロピルアルコール、イソプロピルアルコールなど）、アルコール水溶液などが挙げられるが、水が好ましい。
【００１０】
本発明で使用するセラック（シェラック：ｓｈｅｌｌａｃ）は、動物生産物の天然樹脂であり、用途に応じた製品が市販されており、入手して使用することができる。本発明のシートを食品加熱用包装紙として用いる場合には、シートは直接食品に接触するので、食品用途のセラック（シェラック）の使用が好ましい。
【００１１】
本発明ではセラック（シェラック）も溶剤に溶解した溶液（塗工液）として使用される。溶剤としては、セラックを溶解する溶剤であれば特に限定されず、例えば、メチルアルコール、エチルアルコール、ｎ−プロピルアルコール、イソプロピルアルコール、ブチルアルコール、プロピレングリコールエーテルなどのアルコール、水などが挙げられる。セラックを水溶性にするためにセラックに含まれるカルボキシル基を中和するが、中和剤としては、例えば水酸化ナトリウム、炭酸ナトリウムなどの無機塩基；アンモニア、モノエタノールアミン、トリエタノールアミン、モルホリンなどの有機塩基が挙げられる。セラックを中和する塩基としては、揮発性に富むアンモニアが好ましい。
【００１２】
本発明の耐油性・耐水性シートを製造するためには、基材シートの少なくとも一方の面に、（１）少なくともポリビニルアルコールとセラックを含む塗工液を塗工して塗工層を形成するか、（２）少なくともポリビニルアルコールを含む塗工液を先ず基材に塗布してポリビニルアルコールを含む塗膜を形成し、次いでその上に少なくともセラックを含む塗工液を塗工してセラックを含む塗膜を形成して塗工層とする二つの方法が用いられる。
【００１３】
（１）の方法を実施するには、先ず塗工層形成成分のポリビニルアルコールとセラックを含む塗工液を用意する。共通の溶剤を使用する場合には、その溶剤にポリビニルアルコールとセラックを溶解させて塗工液を調製する。また、各塗工層形成成分を別々の溶剤に溶解する場合には、得られた各溶液を混合して塗工液を調製する。この場合には溶剤同士は混和性（相溶性）を有することが必要である。例えば、ポリビニルアルコールは水溶液で、セラックをアルコール溶液として使用する場合には、アルコールは水と混和性（相溶性）のものを使用し、アルコール溶液に塩基を加えてセラックを中和して水溶性としておくことが必要である。
【００１４】
塗工液中のポリビニルアルコール（Ａ）とセラック（Ｂ）の使用割合は、本発明のシートに要求される耐油性に応じて適宜決定することができるが、通常Ａ：Ｂ（重量比）は１０〜９０：９０〜１０、好ましくは２０〜８０：８０〜２０である。セラックが少なすぎると耐水性が不足し、セラックが多すぎると耐油性が不足する。
【００１５】
塗工液には、必要に応じて消泡剤、防腐剤、着色剤などの添加剤を適宜添加することができる。
また、必要に応じてポリビニルアルコールと相溶する樹脂を本発明の効果が損なわれない範囲で併用することができる。このような樹脂としては、例えば、ビニルアルコールとスチレンあるいはアクリル酸エステルとの共重合体、水溶性セルロース、ポリエチレンオキサイド、ポリアクリル酸ナトリウムなどの水溶性樹脂が挙げられる。
【００１６】
（２）の方法を実施する場合には、少なくともポリビニルアルコールを含む塗工液と少なくともセラックを含む塗工液を用意する。この場合には塗工液の溶剤は（１）の場合のような制約はなく、それぞれの塗工層形成成分に適した溶剤を使用すればよい。また、少なくともポリビニルアルコールを含む塗工液には（１）の場合と同様、ポリビニルアルコールと相溶性の樹脂を併用することができる。各塗工液には（１）の場合と同様に添加剤を適宜添加することができる。
【００１７】
（１）および（２）の場合とも、塗工液を基材シートに塗工して塗工層を形成する。
本発明で使用する基材シートとしては、例えば、紙、不織布（レーヨン、ポリエステル、ポリエチレン、ポリプロピレンなど）などが挙げられるが、紙が好ましい。
塗工液は、通常、固形分が２〜４０重量％程度に調整され、例えば、バーコーター、ロールコーター、エアーナイフコーターあるいはグラビア印刷などの公知の塗工方法で基材シートの少なくとも一方の面に塗工され、乾燥される。（２）の場合には、最初に少なくともポリビニルアルコールを含む塗工液を塗工および乾燥し、次いで、その上に少なくともセラックを含む塗工液を塗工および乾燥して塗工層を形成する。塗工層の乾燥重量は、特に制限されないが、（１）の場合は、０．１〜１０ｇ／ｍ２程度、（２）の場合は各層の乾燥重量は０．１〜６ｇ／ｍ２程度で、両層の合計（塗工層）は上記と同様である。
【００１８】
【実施例】
以下に実施例および比較例を挙げて本発明を具体的に説明するが、本発明はこれらの例に限定されるものではない。なお、以下の文中における部および％は重量基準である。
【００１９】
実施例１
ポリビニルアルコール（日本合成化学工業株式会社製 ＧＨ−２３）の５％水溶液を基材紙の片面にバーコーターＮｏ．０５で乾燥重量が２ｇ／ｍ２となるように塗工し、１２０℃にて２０秒間乾燥させた。次に、セラック（日本シェラック工業株式会社製 ラックグレーズ２５Ｅ）の１０％イソプロピルアルコール溶液を上記ポリビニルアルコール塗膜の上にバーコーターＮｏ．０５で乾燥重量が１ｇ／ｍ２となるように塗工し、１２０℃にて１０秒間乾燥させ、食品加熱用包装紙を得た。
得られた食品加熱用包装紙の耐油性、耐水性および耐熱性を下記の試験方法で評価した。
【００２０】
（耐油性試験）
食品加熱用包装紙に２ｍｌのスポイトで食用油を１滴、滴下し、３０秒後に滴下した油滴を拭き取り、該紙の表面の油のにじみの有無を目視で確認する。
また、同様に食用油を１滴、滴下し、３０分後に滴下した油滴を拭き取り、紙の表面の油のにじみの有無を目視で確認する。
３０秒後、３０分後とも油のにじみはなく、十分な耐油性が得られた。
【００２１】
（耐水性試験）
食品加熱用包装紙を水浴に浸し、全体が水で十分濡れたところで水浴から取り出し、１２０℃にて３０秒間乾燥させる。このように１度水に浸した食品加熱用包装紙を再度上記の方法で耐油試験し、３０秒後と３０分後の紙の表面の油のにじみの有無を目視で確認する。
３０秒後、３０分後とも油のにじみはなく十分な耐水性が得られた。
【００２２】
（耐熱性試験）
食品加熱用包装紙に２ｍｌのスポイトで食用油を１滴、滴下し、それを電子レンジで５００Ｗ、１分間加熱し、その後滴下した油滴を拭き取り、紙の表面の油のにじみの有無を目視で確認する。
油のにじみはなく、十分な耐油性が得られた。
【００２３】
実施例２
セラック（日本シェラック工業株式会社製 ラックグレーズ２５Ｅ）の３０％イソプロピルアルコール溶液に、２８％アンモニア水を加え、ｐＨを１１に調整した。このセラックの溶液とポリビニルアルコール（日本合成化学工業株式会社製 ＧＨ−２３）５％水溶液を混合し、セラック５％、ポリビニルアルコール５％の塗工液を調製した。
この塗工液を基材紙の片面にバーコーターＮｏ．０５で乾燥重量が２．５ｇ／ｍ２となるように塗工し、１２０℃にて２０秒間乾燥させ食品加熱用包装紙を得た。実施例１と同様にして耐油性、耐水性および耐熱性を試験したが、十分な耐油性、耐水性および耐熱性が得られた。
【００２４】
比較例１
ポリビニルアルコールおよびセラックを塗工していない基材紙について実施例１と同様に耐油試験を行い、３０秒後の紙の表面の油のにじみの有無を目視で確認したが、大きなにじみが生じ、耐油性は全くなかった。
【００２５】
比較例２
実施例１と同様にしてポリビニルアルコール水溶液のみを基材紙に塗工して食品加熱用包装紙を得た。このものの耐油性を実施例１と同様にして試験したが、３０秒後、３０分後とも該紙表面に油のにじみはなく、十分な耐油性が得られた。また、実施例１と同様にして耐水製試験を行ったが、３０秒後の紙の表面には油のにじみが生じ十分な耐水性は得られなかった。さらに、実施例１と同様にして耐熱性試験を行ったが、紙の表面には油のにじみが生じ、十分な耐熱性が得られなかった。
【００２６】
【発明の効果】
以上の本発明によれば、基材の少なくとも一方の面にポリビニルアルコールとセラック（セラック）を含む塗工層を設けることで耐油性、耐水性、耐熱性に優れた、特に食品用途としても安全な食品加熱用包装紙として好適なシートが提供される。本発明の耐油性・耐水性シートは食品加熱用包装紙以外にも建材用耐油紙、紙テープ基材などに使用することができる。[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a sheet having a coating film (coating layer) having excellent oil resistance, water resistance and heat resistance, and a method for producing the same. In particular, the sheet having this coating film is suitable for wrapping paper for food heating. .
[0002]
[Prior art]
Paper used for food packaging and the like is required to have oil resistance and water resistance that repel oil and water in food and prevent oil and water from oozing on a surface that is not in contact with food. In addition, the food wrapping paper is heated in a microwave oven or an oven while the food is wrapped, and thus also needs to have heat resistance.
As a method for solving these problems, an oil-resistant paper in which a coating layer of a nonionic or cationic polyvinyl alcohol and a coating layer of a fluorine-based oil-resisting agent are sequentially provided on at least one surface of an internally sized paper of a single-layer paper type is provided. The use of paper has been proposed (see Patent Document 1).
[0003]
[Patent Document 1]
JP-A-7-12849
[Problems to be solved by the invention]
However, fluorine-based oil-proofing agents are said to generate toxic fluorine compounds such as hydrogen fluoride, carbonyl fluoride, and hydrofluoric acid at high temperatures, and oil-resistant paper for food packaging containing such oil-proofing agents is used during cooking or These toxic fluorine compounds may be generated during incineration after disposal after use, and there is a problem in terms of safety.
Therefore, an object of the present invention is to provide a sheet that can be used as a wrapping paper for food heating, which is safe and environmentally friendly, has oil resistance, water resistance, and heat resistance.
[0005]
[Means for Solving the Problems]
The present inventors have conducted intensive studies to develop a safe, environmentally friendly sheet having oil resistance, water resistance, and heat resistance that does not have the above-described problems.As a result, polyvinyl alcohol and natural products are used for food applications. By using shellac (shellac), which is used and forms a strong water-resistant coating film, as a coating film-forming component, it has excellent oil resistance, water resistance, and heat resistance, and is safe for food use. It has been found that a sheet suitable for the present invention can be obtained, and the present invention has been completed.
[0006]
According to the present invention, at least one of an oil-resistant / water-resistant sheet and a base sheet, wherein at least one surface of the base sheet has a coating layer containing at least polyvinyl alcohol and shellac (shellac). An oil- and water-resistant sheet and a method for producing these sheets, characterized in that the surface has a coating layer in which a coating film containing at least polyvinyl alcohol and a coating film containing at least shellac (shellac) are sequentially formed. Provided.
[0007]
BEST MODE FOR CARRYING OUT THE INVENTION
Next, the present invention will be described in detail with reference to preferred embodiments.
The oil-resistant and water-resistant sheet of the present invention includes a coating layer containing at least polyvinyl alcohol and shellac (shellac) or a coating layer containing at least polyvinyl alcohol and at least shellac (shellac) on one or both surfaces of a base sheet. It is characterized by having a coating layer in which a coating film is formed in order.
[0008]
Examples of the polyvinyl alcohol used in the present invention include a partially saponified type, a completely saponified type (95 mol% or more saponification degree), or those modified with a carboxyl group, a sulfone group, an acetoacetyl group, a silanol group, or the like. Can be These can be used alone or in combination of two or more. The degree of polymerization is not particularly limited, but is usually in the range of 500 to 3000, preferably in the range of 1000 to 2500. If the degree of polymerization is less than 500, film formation is difficult, and sufficient oil resistance cannot be obtained. On the other hand, when the degree of polymerization exceeds 3000, the viscosity of the solution becomes considerably high, and the coating operation becomes difficult.
[0009]
In the present invention, polyvinyl alcohol is used as a solution (coating solution) dissolved in a solvent, but the solvent is not particularly limited as long as the solvent dissolves polyvinyl alcohol. Examples include water, alcohols (eg, methyl alcohol, ethyl alcohol, n-propyl alcohol, and isopropyl alcohol), aqueous alcohol solutions, and the like, with water being preferred.
[0010]
Shellac (shellac) used in the present invention is a natural resin of an animal product, and a product suitable for the use is commercially available and can be obtained and used. When the sheet of the present invention is used as wrapping paper for food heating, it is preferable to use shellac (shellac) for food because the sheet directly contacts food.
[0011]
In the present invention, shellac (shellac) is also used as a solution (coating solution) dissolved in a solvent. The solvent is not particularly limited as long as it is a solvent that dissolves shellac, and examples thereof include alcohols such as methyl alcohol, ethyl alcohol, n-propyl alcohol, isopropyl alcohol, butyl alcohol, and propylene glycol ether, and water. The carboxyl group contained in the shellac is neutralized to make the shellac water-soluble. Examples of the neutralizing agent include inorganic bases such as sodium hydroxide and sodium carbonate; ammonia, monoethanolamine, triethanolamine, and morpholine. Organic bases. As the base for neutralizing shellac, ammonia having a high volatility is preferable.
[0012]
In order to produce the oil- and water-resistant sheet of the present invention, (1) a coating liquid containing at least polyvinyl alcohol and shellac is applied to at least one surface of the base sheet to form a coating layer. Alternatively, (2) a coating liquid containing at least polyvinyl alcohol is first applied to a substrate to form a coating film containing polyvinyl alcohol, and then a coating liquid containing at least shellac is applied thereon to contain shellac. Two methods are used for forming a coating film to form a coating layer.
[0013]
To carry out the method (1), first, a coating liquid containing polyvinyl alcohol and shellac as coating layer forming components is prepared. When a common solvent is used, polyvinyl alcohol and shellac are dissolved in the solvent to prepare a coating solution. When each coating layer forming component is dissolved in a separate solvent, the obtained solutions are mixed to prepare a coating solution. In this case, the solvents need to have miscibility (compatibility). For example, when polyvinyl alcohol is an aqueous solution and shellac is used as an alcohol solution, use alcohol that is miscible (compatible) with water, and add a base to the alcohol solution to neutralize the shellac and dissolve it in water. It is necessary to keep it.
[0014]
The usage ratio of the polyvinyl alcohol (A) and the shellac (B) in the coating liquid can be appropriately determined according to the oil resistance required for the sheet of the present invention. It is 10-90: 90-10, preferably 20-80: 80-20. When the amount of shellac is too small, water resistance is insufficient, and when the amount of shellac is too large, oil resistance is insufficient.
[0015]
Additives such as an antifoaming agent, a preservative, and a coloring agent can be appropriately added to the coating liquid as needed.
If necessary, a resin compatible with polyvinyl alcohol can be used in combination as long as the effects of the present invention are not impaired. Examples of such a resin include water-soluble resins such as a copolymer of vinyl alcohol and styrene or acrylate, water-soluble cellulose, polyethylene oxide, and sodium polyacrylate.
[0016]
When carrying out the method (2), a coating liquid containing at least polyvinyl alcohol and a coating liquid containing at least shellac are prepared. In this case, the solvent of the coating liquid is not limited as in the case of (1), and a solvent suitable for each coating layer forming component may be used. Further, as in the case of (1), a resin compatible with polyvinyl alcohol can be used in combination for the coating liquid containing at least polyvinyl alcohol. An additive can be appropriately added to each coating liquid as in the case of (1).
[0017]
In both cases (1) and (2), the coating liquid is applied to the base sheet to form a coating layer.
Examples of the base sheet used in the present invention include paper and nonwoven fabric (rayon, polyester, polyethylene, polypropylene, etc.), but paper is preferred.
The coating liquid is usually adjusted to have a solid content of about 2 to 40% by weight, and for example, at least one surface of the base sheet is coated by a known coating method such as a bar coater, a roll coater, an air knife coater, or gravure printing. Coated and dried. In the case of (2), first, a coating solution containing at least polyvinyl alcohol is applied and dried, and then a coating solution containing at least shellac is applied and dried thereon to form a coating layer. . The dry weight of the coating layer is not particularly limited. In the case of (1), the dry weight of each layer is about 0.1 to 10 g / m 2 , and in the case of (2), the dry weight of each layer is about 0.1 to 6 g / m 2. The total (coating layer) of both layers is the same as above.
[0018]
【Example】
Hereinafter, the present invention will be described specifically with reference to Examples and Comparative Examples, but the present invention is not limited to these Examples. In the following description, parts and% are based on weight.
[0019]
Example 1
A 5% aqueous solution of polyvinyl alcohol (GH-23 manufactured by Nippon Synthetic Chemical Industry Co., Ltd.) was coated on one surface of the base paper with a bar coater No. 05 and dried at 120 ° C. for 20 seconds so that the dry weight was 2 g / m 2 . Next, a 10% isopropyl alcohol solution of shellac (Lac Glaze 25E manufactured by Nippon Shellac Industrial Co., Ltd.) was applied onto the polyvinyl alcohol coating film using a bar coater No. 05, the coating was applied so that the dry weight was 1 g / m 2, and dried at 120 ° C. for 10 seconds to obtain a food heating wrapping paper.
The oil resistance, water resistance and heat resistance of the obtained food heating wrapping paper were evaluated by the following test methods.
[0020]
(Oil resistance test)
One drop of edible oil is dropped on a food heating wrapping paper with a 2 ml dropper, and after 30 seconds, the dropped oil drops are wiped off, and the presence or absence of oil bleeding on the surface of the paper is visually checked.
Similarly, one drop of edible oil is dropped, and after 30 minutes, the dropped oil drop is wiped off, and the presence or absence of oil bleeding on the surface of the paper is visually checked.
After 30 seconds and 30 minutes, there was no oil bleeding, and sufficient oil resistance was obtained.
[0021]
(Water resistance test)
The wrapping paper for food heating is immersed in a water bath, and is taken out of the water bath when the whole is sufficiently wetted with water, and dried at 120 ° C. for 30 seconds. The wrapping paper for food heating once immersed in water in this way is subjected to the oil resistance test again by the above method, and the presence or absence of oil bleeding on the paper surface after 30 seconds and 30 minutes is visually checked.
After 30 seconds and 30 minutes, the oil did not bleed and sufficient water resistance was obtained.
[0022]
(Heat resistance test)
One drop of edible oil is dropped on a wrapping paper for food heating with a 2 ml dropper, heated at 500 W for 1 minute with a microwave oven, and then the dropped oil drops are wiped off to visually check for oil bleed on the paper surface. To confirm.
There was no oil bleeding and sufficient oil resistance was obtained.
[0023]
Example 2
28% ammonia water was added to a 30% isopropyl alcohol solution of shellac (Lac Glaze 25E, manufactured by Nippon Shellac Industry Co., Ltd.) to adjust the pH to 11. This shellac solution and a 5% aqueous solution of polyvinyl alcohol (GH-23, manufactured by Nippon Synthetic Chemical Industry Co., Ltd.) were mixed to prepare a coating solution of 5% of shellac and 5% of polyvinyl alcohol.
This coating liquid was applied to one side of the base paper with a bar coater No. 05, the coating was dried so as to have a dry weight of 2.5 g / m 2 and dried at 120 ° C. for 20 seconds to obtain a food heating wrapping paper. Oil resistance, water resistance and heat resistance were tested in the same manner as in Example 1, but sufficient oil resistance, water resistance and heat resistance were obtained.
[0024]
Comparative Example 1
An oil resistance test was performed on the base paper not coated with polyvinyl alcohol and shellac in the same manner as in Example 1 to visually check the presence or absence of oil bleeding on the surface of the paper after 30 seconds, but large bleeding occurred. There was no oil resistance.
[0025]
Comparative Example 2
In the same manner as in Example 1, only the polyvinyl alcohol aqueous solution was applied to the base paper to obtain a food heating wrapping paper. This was tested for oil resistance in the same manner as in Example 1. After 30 seconds and 30 minutes, no oil bleeding was observed on the paper surface, and sufficient oil resistance was obtained. A water resistance test was conducted in the same manner as in Example 1. However, after 30 seconds, oil bleeding occurred on the paper surface, and sufficient water resistance was not obtained. Further, a heat resistance test was carried out in the same manner as in Example 1, but oil bleeding occurred on the surface of the paper, and sufficient heat resistance was not obtained.
[0026]
【The invention's effect】
According to the present invention described above, by providing a coating layer containing polyvinyl alcohol and shellac (shellac) on at least one surface of the substrate, it is excellent in oil resistance, water resistance, and heat resistance, and is particularly safe for food use. A sheet suitable as a food wrapping paper for food heating is provided. The oil- and water-resistant sheet of the present invention can be used for oil-resistant paper for building materials, paper tape bases, and the like, in addition to wrapping paper for food heating.
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003045417A JP4372433B2 (en) | 2003-02-24 | 2003-02-24 | Oil and water resistant food heating wrapping paper and method for producing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003045417A JP4372433B2 (en) | 2003-02-24 | 2003-02-24 | Oil and water resistant food heating wrapping paper and method for producing the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2004256926A true JP2004256926A (en) | 2004-09-16 |
| JP4372433B2 JP4372433B2 (en) | 2009-11-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2003045417A Expired - Fee Related JP4372433B2 (en) | 2003-02-24 | 2003-02-24 | Oil and water resistant food heating wrapping paper and method for producing the same |
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| Country | Link |
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| JP (1) | JP4372433B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009034972A1 (en) * | 2007-09-10 | 2009-03-19 | Awa Paper Mfg.Co., Ltd. | Filter paper for vehicle and process for producing the same |
| WO2013015185A1 (en) | 2011-07-22 | 2013-01-31 | 株式会社クラレ | Polyoxyalkylene-modified vinyl alcohol polymer and use thereof |
| CN110105777A (en) * | 2019-05-15 | 2019-08-09 | 和国荣 | Environment-friendly waterproof material preparation method is built in a kind of lac capital construction |
| WO2023147429A1 (en) * | 2022-01-28 | 2023-08-03 | Michelman, Inc. | Shellac-containing aqueous emulsions and coatings formed therewith |
| WO2023147434A1 (en) * | 2022-01-28 | 2023-08-03 | Michelman, Inc. | Aqueous emulsions containing shellac particles and coatings formed therewith |
-
2003
- 2003-02-24 JP JP2003045417A patent/JP4372433B2/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009034972A1 (en) * | 2007-09-10 | 2009-03-19 | Awa Paper Mfg.Co., Ltd. | Filter paper for vehicle and process for producing the same |
| WO2013015185A1 (en) | 2011-07-22 | 2013-01-31 | 株式会社クラレ | Polyoxyalkylene-modified vinyl alcohol polymer and use thereof |
| US9181373B2 (en) | 2011-07-22 | 2015-11-10 | Kuraray Co., Ltd. | Polyoxyalkylene modified vinyl alcohol-based polymer and use thereof |
| CN110105777A (en) * | 2019-05-15 | 2019-08-09 | 和国荣 | Environment-friendly waterproof material preparation method is built in a kind of lac capital construction |
| WO2023147429A1 (en) * | 2022-01-28 | 2023-08-03 | Michelman, Inc. | Shellac-containing aqueous emulsions and coatings formed therewith |
| WO2023147434A1 (en) * | 2022-01-28 | 2023-08-03 | Michelman, Inc. | Aqueous emulsions containing shellac particles and coatings formed therewith |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4372433B2 (en) | 2009-11-25 |
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