JPH04351545A - Method for forming water-soluble polymer thin film on surface of water-soluble or water-easily dispersible paper and seeding and seedling culture sheet prepared by using the method - Google Patents
Method for forming water-soluble polymer thin film on surface of water-soluble or water-easily dispersible paper and seeding and seedling culture sheet prepared by using the methodInfo
- Publication number
- JPH04351545A JPH04351545A JP12574591A JP12574591A JPH04351545A JP H04351545 A JPH04351545 A JP H04351545A JP 12574591 A JP12574591 A JP 12574591A JP 12574591 A JP12574591 A JP 12574591A JP H04351545 A JPH04351545 A JP H04351545A
- Authority
- JP
- Japan
- Prior art keywords
- water
- soluble
- thin film
- soluble polymer
- paper
- 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
Landscapes
- Laminated Bodies (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Paints Or Removers (AREA)
- Paper (AREA)
- Pretreatment Of Seeds And Plants (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Treatments Of Macromolecular Shaped Articles (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は、水溶性又は水に易分散
性の支持体紙の表面に、該支持体紙の構造、形状を損な
うことなく、水溶性ポリマーの薄膜を形成する方法、お
よび、該方法を用いて製作した播種育苗用シートに関す
る。[Industrial Field of Application] The present invention relates to a method for forming a thin film of a water-soluble polymer on the surface of a water-soluble or easily dispersible support paper without damaging the structure or shape of the support paper; The present invention also relates to a sheet for sowing and raising seedlings produced using the method.
【０００２】0002
【従来の技術】水溶紙と水溶性ポリビニルアルコールと
を貼り合わせた紙は既に市販されている（例えば、三島
製紙（株）製ディゾルボ ＷＡＬなど）。水溶紙表面に
水溶性ポリマー膜を形成しようとする場合、支持体とな
る水溶紙が水溶性であるために、ポリマー水溶液を直接
塗工して作成する方法は採用できない。従って、一般に
は、それぞれ別個に作成した紙とポリマー膜とを貼り合
わせる方法（ラミネーティング）が用いられている。し
かし、ラミネート法を用いた場合、ポリマー膜が厚いと
貼り合わせ物が僅かの条件変化で湾曲してしまう。これ
は紙とポリマーとの膨張係数の差あるいは収縮率の差に
起因するものである。このため、水溶性に富むポリマー
の膜を予め作成して貼り合わせる方法による場合には、
膜の厚さをできるだけ薄くしなければならないが、現状
技術では厚さを３０μｍ以下にすることは困難であり、
また、完成した製品も極めて高価なものとなる。BACKGROUND OF THE INVENTION Papers made by laminating water-soluble paper and water-soluble polyvinyl alcohol are already commercially available (for example, Disorbo WAL manufactured by Mishima Paper Co., Ltd.). When attempting to form a water-soluble polymer film on the surface of water-soluble paper, a method of directly coating an aqueous polymer solution cannot be adopted because the water-soluble paper serving as the support is water-soluble. Therefore, in general, a method (laminating) is used in which paper and polymer films, which have been prepared separately, are bonded together. However, when the lamination method is used, if the polymer film is thick, the bonded product will curve due to slight changes in conditions. This is due to the difference in expansion coefficient or contraction rate between the paper and the polymer. For this reason, if a highly water-soluble polymer film is created in advance and bonded together,
The thickness of the film must be made as thin as possible, but with current technology it is difficult to reduce the thickness to 30 μm or less.
Furthermore, the finished product is also extremely expensive.
【０００３】また、近年、水溶紙上に小ドットの粘着剤
を塗工して種子を搭載できるようにした播種育苗用シー
トが水耕栽培分野などで使用されている。粘着剤ドット
に種子を１粒ずつ搭載する場合に、種子の大きさが小さ
くなるとそれに応じて粘着剤ドットも小さくしなければ
ならないが、水溶紙表面が粗いときには小ドット粘着剤
の形成が困難である。このような技術的な困難性のため
に、極めて小さい種子を簡便かつ効果的に搭載できる播
種育苗用シートはまだ製作されていない。[0003] Also, in recent years, sheets for sowing and raising seedlings on which seeds can be mounted by coating small dots of adhesive on water-soluble paper have been used in the field of hydroponic cultivation. When loading seeds one by one onto adhesive dots, as the size of the seeds decreases, the adhesive dots must also be made smaller, but when the surface of the water-soluble paper is rough, it is difficult to form small adhesive dots. be. Due to such technical difficulties, a sheet for sowing and raising seedlings that can simply and effectively carry extremely small seeds has not yet been produced.
【０００４】0004
【発明が解決しようとする課題】上述のように、従来技
術においては、水溶性支持体（紙）上に水溶性ポリマー
薄膜を形成することについて満足な方法が確立されてお
らず、また、このため、小径種子を効率良く搭載し得る
播種育苗用シートが得られていなかった。[Problems to be Solved by the Invention] As mentioned above, in the prior art, a satisfactory method for forming a water-soluble polymer thin film on a water-soluble support (paper) has not been established. Therefore, a sheet for sowing and raising seedlings that can efficiently mount small-diameter seeds has not been obtained.
【０００５】本発明の目的は、上記従来技術の有してい
た課題を解決して、水溶性または水に易分散性の支持体
（以下、単に、水溶性支持体と称する）の構造、形状を
損なうことなく、しかも安価に、水溶性支持体上に水溶
性ポリマーの薄膜を形成する方法、および、該方法を用
いて製作した播種育苗用シートを提供することにある。An object of the present invention is to solve the above-mentioned problems of the prior art and improve the structure and shape of a water-soluble or easily dispersible support (hereinafter simply referred to as a water-soluble support). The object of the present invention is to provide a method for forming a thin film of a water-soluble polymer on a water-soluble support at a low cost without damaging the water-soluble polymer, and a sheet for seeding and raising seedlings produced using the method.
【０００６】[0006]
【課題を解決するための手段】上記目的は、水溶性支持
体紙の表面に水溶性ポリマーの薄膜を形成する方法にお
いて、上記水溶性ポリマーを水と水に易溶性の有機溶剤
との混合溶剤に溶解した後、該混合溶液を上記支持体紙
の表面に塗工することによって達成することができる。[Means for Solving the Problems] The above object is to provide a method for forming a thin film of a water-soluble polymer on the surface of a water-soluble support paper, in which the water-soluble polymer is mixed with water and an organic solvent that is easily soluble in water. This can be achieved by dissolving the mixed solution in a solution and then coating the surface of the support paper.
【０００７】この際、上記混合溶剤については有機溶剤
の混合割合ができるだけ高いことが好ましく、場合によ
っては、水に溶解しているポリマーが有機溶剤の添加に
よる溶解度低下によってゲル化する程度の混合比とする
ことが望ましい。At this time, it is preferable that the mixing ratio of the organic solvent in the above-mentioned mixed solvent is as high as possible, and in some cases, the mixing ratio may be set to such a level that the polymer dissolved in water gels due to a decrease in solubility due to the addition of the organic solvent. It is desirable to do so.
【０００８】また、上記のようにして調製した溶液を水
溶性支持体紙の表面に塗工することになるが、支持体紙
の片面あるいは両面に塗工することが可能であり、塗工
の方法としては吹き付け塗工あるいは印刷塗工が適用可
能である。[0008]Also, the solution prepared as described above is applied to the surface of the water-soluble support paper, but it is possible to apply it to one or both sides of the support paper. As a method, spray coating or printing coating can be applied.
【０００９】なお、上記支持体紙表面上に均一に形成し
た水溶性ポリマー薄膜上に粘着剤小ドットを所望の間隔
、所望のパターンで塗工することにより、播種育苗用シ
ートを作成することができる。[0009] A sheet for sowing and raising seedlings can be prepared by coating small adhesive dots at desired intervals and in a desired pattern on a water-soluble polymer thin film uniformly formed on the surface of the support paper. can.
【００１０】0010
【作用】水溶性の支持体紙上に、その内部構造や表面状
態を変化させることなく、水を溶剤とする物質を塗工す
ることは極めて困難である。従って、支持体紙上にその
性状を大きく損なうことなく水溶性物質の薄膜を形成す
るためには、該水溶性物質を溶解する溶剤の組成につい
て検討する必要がある。以下、水溶性ポリマーとしてポ
リビニルアルコールを取り上げた場合の例について説明
する。[Operation] It is extremely difficult to apply a substance using water as a solvent onto a water-soluble paper support without changing its internal structure or surface condition. Therefore, in order to form a thin film of a water-soluble substance on a support paper without significantly impairing its properties, it is necessary to consider the composition of the solvent that dissolves the water-soluble substance. An example in which polyvinyl alcohol is used as the water-soluble polymer will be described below.
【００１１】ポリビニルアルコールはそのケン化度と重
合度によって水に対する溶解度を異にする。完全ケン化
のポリビニルアルコールは高温の水には容易に溶解する
が、常温の水には溶解しない。一方、ケン化度の低い（
例えば、ケン化度９０％以下）ものは常温の水に容易に
溶解する。重合度については、重合度が大きいほど水に
対する溶解性は低下するが、ケン化度ほどの影響はない
。
また、一旦水に溶解したものは温度が低下しても溶解状
態を持続する。なお、常温において水溶性の高いものを
必要とする場合には、ケン化度９０％以下のものを使用
する。Polyvinyl alcohol has different solubility in water depending on its degree of saponification and degree of polymerization. Completely saponified polyvinyl alcohol easily dissolves in high-temperature water, but does not dissolve in room-temperature water. On the other hand, the degree of saponification is low (
For example, those with a degree of saponification of 90% or less are easily dissolved in water at room temperature. Regarding the degree of polymerization, the higher the degree of polymerization, the lower the solubility in water, but it does not have as much influence as the degree of saponification. Furthermore, once dissolved in water, it remains dissolved even if the temperature drops. In addition, when a material with high water solubility at room temperature is required, one with a degree of saponification of 90% or less is used.
【００１２】上記したように、ポリビニルアルコールは
水に対してある程度の溶解性を示すが、水以外の溶剤に
は、ジメチルスルホキシドのような特殊な溶剤を除いて
、殆ど溶解しない。ここで、ポリビニルアルコールの水
溶液に水と良く溶解し合う有機溶剤（例えば、メタノー
ル）を添加して行くと、ポリビニルアルコールの溶解度
は徐々に減少し、その濃度が大きい場合（例えば、８％
以上）には両溶剤の或る混合比率の領域で溶液はゲル化
し、さらにメタノールの添加量を増して行くとポリビニ
ルアルコールが析出してくる。ポリビニルアルコール溶
液がゲル化する程度の混合比率の水‐メタノール混合溶
剤に水溶紙を浸漬すると、該水溶紙は殆ど溶解しないか
溶解するのに極めて長時間を要する。従って、ポリビニ
ルアルコールがゲル化し始める程度以上にメタノール比
率の大きい水‐メタノール混合溶剤にポリビニルアルコ
ールを溶解して水溶紙上に塗工し、短時間で乾燥を行う
と、水溶紙に良く密着したポリビニルアルコール薄膜を
、該水溶紙の性状を損なうことなく形成することができ
る。As mentioned above, although polyvinyl alcohol exhibits some degree of solubility in water, it is hardly soluble in solvents other than water, except for special solvents such as dimethyl sulfoxide. When an organic solvent (e.g., methanol) that dissolves well in water is added to an aqueous solution of polyvinyl alcohol, the solubility of polyvinyl alcohol gradually decreases, and when the concentration is large (e.g., 8%), the solubility of polyvinyl alcohol gradually decreases.
(above), the solution gels at a certain mixing ratio of both solvents, and as the amount of methanol added further increases, polyvinyl alcohol precipitates. When a water-soluble paper is immersed in a mixed solvent of water and methanol at a mixing ratio such that a polyvinyl alcohol solution gels, the water-soluble paper hardly dissolves or takes an extremely long time to dissolve. Therefore, if polyvinyl alcohol is dissolved in a water-methanol mixed solvent with a methanol ratio higher than that at which polyvinyl alcohol begins to gel, and the solution is coated on water-soluble paper and dried for a short time, polyvinyl alcohol adheres well to the water-soluble paper. A thin film can be formed without impairing the properties of the water-soluble paper.
【００１３】ゲル化状態のポリビニルアルコール溶液は
粘着性、チクソトロピー性が小さいために塗工しやすく
、紙面に印刷することも容易である。また、濃度の低い
低粘度溶液を用いれば吹き付け塗工を行うことができる
。[0013] Polyvinyl alcohol solution in gelatinous state has low tackiness and thixotropy, so it is easy to coat and also easy to print on paper. Moreover, spray coating can be performed by using a low concentration and low viscosity solution.
【００１４】この場合に、水と混合する有機溶剤として
はアルコール類、ケトン類、エステル類、エーテル類等
多くのものが使用可能であるが、水に対する相溶性、価
格等の点を考慮すると、メタノール、ブタノール等の１
価アルコールが適している。[0014] In this case, many organic solvents such as alcohols, ketones, esters, and ethers can be used as the organic solvent to be mixed with water, but considering the compatibility with water, price, etc. 1 such as methanol, butanol, etc.
Alcohol is suitable.
【００１５】水溶性ポリマー薄膜は、上記したように、
水溶紙の片面だけに形成することもできるし、あるいは
両面に形成することもできる。水溶紙の片面のみの平坦
性を必要とするときは片面だけを水溶性ポリマーで被覆
すれば良い。片面のみを水溶性ポリマーで被覆すると水
溶紙が湾曲を起すことがあるが、このような場合には水
溶紙の両面に水溶性ポリマーを被覆すれば良い。[0015] As mentioned above, the water-soluble polymer thin film
It can be formed on only one side of the water-soluble paper, or it can be formed on both sides. When flatness of only one side of water-soluble paper is required, it is sufficient to coat only one side with a water-soluble polymer. If only one side is coated with a water-soluble polymer, the water-soluble paper may become curved, but in such a case, both sides of the water-soluble paper may be coated with the water-soluble polymer.
【００１６】一般に、被印刷面が平坦で、印刷インキの
濡れ性が良い場合には０．１ｍｍ 巾程度の印刷は極め
て容易であるが、被印刷面が粗く、凹凸に富み、かつ印
刷インキのにじみが大きい紙等に対しては細かい印刷は
困難である。これに対し、ポリビニルアルコール薄膜で
被覆した水溶紙は表面状態が大幅に改善されて均一かつ
平坦となり、しかも印刷インキの浸透が防止されている
ために、表面への細かいパターンの印刷が可能となる。
印刷インキとして粘着剤溶液を用いた場合も全く同様で
あり、従って、ポリビニルアルコール薄膜で被覆した水
溶紙表面に直接粘着剤の小ドットを形成することが可能
となり、粘着剤小ドットを搭載した播種育苗用シートを
得ることができる。In general, if the printing surface is flat and the printing ink has good wettability, it is extremely easy to print a width of about 0.1 mm, but if the printing surface is rough and has many irregularities, and the printing ink has good wettability. It is difficult to print finely on paper with large bleeds. In contrast, water-soluble paper coated with a thin film of polyvinyl alcohol has a significantly improved surface condition, becoming uniform and flat, and also prevents printing ink from penetrating, making it possible to print fine patterns on the surface. . The same is true when an adhesive solution is used as the printing ink. Therefore, it is possible to form small dots of adhesive directly on the surface of water-soluble paper coated with a thin film of polyvinyl alcohol. A sheet for raising seedlings can be obtained.
【００１７】[0017]
【実施例】以下、本発明の構成について、実施例によっ
てさらに具体的に説明する。[Examples] The structure of the present invention will be explained in more detail below with reference to Examples.
【００１８】[0018]
【実施例１】ケン化度 ８８％、平均重合度１７００の
ポリビニルアルコール１００ｇを水とメタノールとの混
合比 １ ： １．５ の混合溶剤 ９００ｇに添加し
て良く撹拌し、ポリビニルアルコールの透明なゲルを得
た。このゲルをポリエステルメッシュのスクリーンを用
いて市販の不織布からなる水溶紙の片面にスクリーン塗
工し、直ちに１０５℃で乾燥して、片面にポリビニルア
ルコール薄膜を形成した水溶紙を得た。この際、水を含
む上記溶剤に起因する水溶紙の損傷は殆ど認められなか
った。[Example 1] 100 g of polyvinyl alcohol with a degree of saponification of 88% and an average degree of polymerization of 1700 was added to 900 g of a mixed solvent of water and methanol at a mixing ratio of 1:1.5 and stirred well to form a transparent gel of polyvinyl alcohol. I got it. This gel was screen-coated on one side of a commercially available water-soluble paper made of non-woven fabric using a polyester mesh screen, and immediately dried at 105°C to obtain a water-soluble paper with a polyvinyl alcohol thin film formed on one side. At this time, almost no damage to the water-soluble paper due to the water-containing solvent was observed.
【００１９】また、上記と同様にして水溶紙の両面にポ
リビニルアルコールのゲルを塗工した。この場合も水溶
紙の損傷は殆ど認められなかった。Further, polyvinyl alcohol gel was coated on both sides of the water-soluble paper in the same manner as above. Also in this case, almost no damage to the water-soluble paper was observed.
【００２０】[0020]
【実施例２】ケン化度 ８８％、平均重合度１７００の
ポリビニルアルコール ５０ｇを水とメタノールとの混
合比 １ ： １．３ の混合溶剤 ９５０ｇに添加し
て良く撹拌し、ポリビニルアルコールの透明な溶液を得
た。市販の不織布からなる水溶紙を熱ロール上に置いて
、乾燥しながら該水溶紙表面に上記溶液を吹き付け塗工
して、ポリビニルアルコール被覆水溶紙を得ることがで
きた。[Example 2] 50 g of polyvinyl alcohol with a degree of saponification of 88% and an average degree of polymerization of 1700 was added to 950 g of a mixed solvent of water and methanol at a mixing ratio of 1:1.3 and stirred well to form a transparent solution of polyvinyl alcohol. I got it. A water-soluble paper made of a commercially available non-woven fabric was placed on a hot roll, and the solution was sprayed onto the surface of the paper while drying to obtain a polyvinyl alcohol-coated water-soluble paper.
【００２１】[0021]
【実施例３】実施例１記載の方法で作成したポリビニル
アルコール被覆水溶紙上に高沸点溶媒に溶解した粘度
４ Ｐａ・ｓ の粘着剤溶液を点状に印刷塗工して播種
シートを作成した。ここで、粘着剤ドットの大きさはφ
０．２ｍｍから０．１ｍｍおきにφ１ｍｍまでとしたが
、何れの場合も良好な粘着剤ドットを形成することがで
きた。[Example 3] Viscosity dissolved in high boiling point solvent on polyvinyl alcohol coated water-soluble paper prepared by the method described in Example 1
A seeding sheet was prepared by printing and applying a pressure-sensitive adhesive solution of 4 Pa·s in dots. Here, the size of the adhesive dot is φ
Although the diameter was set at 0.1 mm intervals from 0.2 mm to φ1 mm, good adhesive dots could be formed in all cases.
【００２２】[0022]
【発明の効果】以上述べてきたように、水溶性支持体紙
の表面に水溶性ポリマー薄膜を形成する方法を本発明の
方法とすることによって、従来技術の有していた課題を
解消して、水溶性支持体の構造、形状を損なうことなく
しかも安価に水溶性支持体上に水溶性ポリマーの薄膜を
形成することのできる方法を提供することができた。[Effects of the Invention] As described above, by using the method of the present invention to form a water-soluble polymer thin film on the surface of a water-soluble paper support, the problems of the prior art can be solved. It has been possible to provide a method for forming a thin film of a water-soluble polymer on a water-soluble support at low cost without damaging the structure or shape of the water-soluble support.
【００２３】また、この方法を適用することにより平坦
性に優れ、かつ印刷インキ等の浸透性のない水溶性ポリ
マー薄膜面を有する水溶性支持体を得ることができ、そ
の結果、粘着剤小ドットを所望の間隔、パターンで該水
溶性支持体上に設けた播種育苗用シートを得ることがで
きた。Furthermore, by applying this method, it is possible to obtain a water-soluble support having a thin film surface of a water-soluble polymer that has excellent flatness and is impermeable to printing ink, etc., and as a result, small dots of adhesive It was possible to obtain a sheet for seeding and raising seedlings, in which the particles were provided on the water-soluble support at desired intervals and in a desired pattern.
Claims (9)
溶性ポリマーの薄膜を形成する方法において、水溶性ポ
リマーを水と水に易溶性の有機溶剤との混合溶剤に溶解
した後、該混合溶液を支持体紙の表面に塗工することを
特徴とする水溶性又は水に易分散性の紙の表面に水溶性
ポリマー薄膜を形成する方法。Claim 1: A method for forming a thin film of a water-soluble polymer on the surface of paper that is water-soluble or easily dispersible in water, after dissolving the water-soluble polymer in a mixed solvent of water and an organic solvent that is easily water-soluble. . A method for forming a water-soluble polymer thin film on the surface of water-soluble or easily dispersible paper, the method comprising coating the mixed solution on the surface of a support paper.
ル、好ましくはケン化度９０％以下のポリビニルアルコ
ールであることを特徴とする請求項１記載の水溶性又は
水に易分散性の紙の表面に水溶性ポリマー薄膜を形成す
る方法。2. The water-soluble or easily dispersible paper according to claim 1, wherein the water-soluble polymer is polyvinyl alcohol, preferably polyvinyl alcohol with a degree of saponification of 90% or less. A method of forming a thin polymer film.
ルであることを特徴とする請求項１記載の水溶性又は水
に易分散性の支持体紙の表面に水溶性ポリマー薄膜を形
成する方法。3. Forming a water-soluble polymer thin film on the surface of the water-soluble or water-dispersible support paper according to claim 1, wherein the water-soluble organic solvent is a monohydric alcohol. how to.
き付けによって行う塗工であることを特徴とする請求項
１記載の水溶性又は水に易分散性の紙の表面に水溶性ポ
リマー薄膜を形成する方法。4. A thin film of water-soluble polymer on the surface of the water-soluble or water-dispersible paper according to claim 1, wherein the coating is carried out by spraying the water-soluble polymer solution. How to form.
溶液の印刷による塗工であることを特徴とする請求項１
記載の水溶性又は水に易分散性の紙の表面に水溶性ポリ
マー薄膜を形成する方法。5. Claim 1, wherein the coating is performed by printing a gel solution of the water-soluble polymer.
A method for forming a water-soluble polymer thin film on the surface of the water-soluble or water-dispersible paper described above.
薄膜を片面に形成したことを特徴とする水溶性又は水に
易分散性の紙。6. A water-soluble or easily dispersible paper, characterized in that a water-soluble polymer thin film is formed on one side by the method according to claim 1.
薄膜を両面に形成したことを特徴とする水溶性又は水に
易分散性の紙。7. A water-soluble or easily dispersible paper, characterized in that a water-soluble polymer thin film is formed on both surfaces by the method according to claim 1.
紙の表面に設けた水溶性ポリマー薄膜上に粘着剤をドッ
ト状に塗工してなることを特徴とする播種育苗用シート
。8. A method for seeding and raising seedlings, characterized in that the water-soluble polymer thin film provided on the surface of the water-soluble or easily dispersible paper according to claim 6 is coated with an adhesive in the form of dots. sheet.
紙の表面に設けた水溶性ポリマー薄膜の片面上に粘着剤
をドット状に塗工してなることを特徴とする播種育苗用
シート。9. A sowing method characterized in that an adhesive is coated in dots on one side of a water-soluble polymer thin film provided on the surface of the water-soluble or water-dispersible paper according to claim 7. Sheet for raising seedlings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3125745A JPH0722983B2 (en) | 1991-05-29 | 1991-05-29 | Method for forming water-soluble polymer thin film on surface of water-soluble or water-dispersible paper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3125745A JPH0722983B2 (en) | 1991-05-29 | 1991-05-29 | Method for forming water-soluble polymer thin film on surface of water-soluble or water-dispersible paper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04351545A true JPH04351545A (en) | 1992-12-07 |
| JPH0722983B2 JPH0722983B2 (en) | 1995-03-15 |
Family
ID=14917754
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3125745A Expired - Fee Related JPH0722983B2 (en) | 1991-05-29 | 1991-05-29 | Method for forming water-soluble polymer thin film on surface of water-soluble or water-dispersible paper |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0722983B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015193238A (en) * | 2014-03-19 | 2015-11-05 | 積水フィルム株式会社 | Water-soluble multilayer film and vegetation sheet using the same |
| EP3403483A1 (en) * | 2017-05-19 | 2018-11-21 | S+dB B.V. | Seed support comprising a self-supporting film |
| US11910739B2 (en) | 2019-04-01 | 2024-02-27 | S+dB B.V. | Process for preparing a seed support |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5752089U (en) * | 1980-09-05 | 1982-03-25 | ||
| JPH01296909A (en) * | 1988-05-26 | 1989-11-30 | Sugawara Kogyo Kk | Tacky adhesive sheet for sowing and seedling raising and sowing and seedling-raising process using the same sheet |
| JPH04345623A (en) * | 1991-05-22 | 1992-12-01 | Kuraray Co Ltd | Production of resin-laminated paper |
-
1991
- 1991-05-29 JP JP3125745A patent/JPH0722983B2/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5752089U (en) * | 1980-09-05 | 1982-03-25 | ||
| JPH01296909A (en) * | 1988-05-26 | 1989-11-30 | Sugawara Kogyo Kk | Tacky adhesive sheet for sowing and seedling raising and sowing and seedling-raising process using the same sheet |
| JPH04345623A (en) * | 1991-05-22 | 1992-12-01 | Kuraray Co Ltd | Production of resin-laminated paper |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015193238A (en) * | 2014-03-19 | 2015-11-05 | 積水フィルム株式会社 | Water-soluble multilayer film and vegetation sheet using the same |
| EP3403483A1 (en) * | 2017-05-19 | 2018-11-21 | S+dB B.V. | Seed support comprising a self-supporting film |
| US11910739B2 (en) | 2019-04-01 | 2024-02-27 | S+dB B.V. | Process for preparing a seed support |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0722983B2 (en) | 1995-03-15 |
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|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |