JPH07123876A - Sheet-shaped composition containing biodegradable resin and sheet-shaped molded article - Google Patents
Sheet-shaped composition containing biodegradable resin and sheet-shaped molded articleInfo
- Publication number
- JPH07123876A JPH07123876A JP27383193A JP27383193A JPH07123876A JP H07123876 A JPH07123876 A JP H07123876A JP 27383193 A JP27383193 A JP 27383193A JP 27383193 A JP27383193 A JP 27383193A JP H07123876 A JPH07123876 A JP H07123876A
- Authority
- JP
- Japan
- Prior art keywords
- sheet
- resin
- paper
- biodegradable resin
- biodegradable
- 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.)
- Pending
Links
- 229920006167 biodegradable resin Polymers 0.000 title claims abstract description 35
- 239000000203 mixture Substances 0.000 title claims abstract description 22
- 229920005989 resin Polymers 0.000 claims abstract description 47
- 239000011347 resin Substances 0.000 claims abstract description 47
- 239000000839 emulsion Substances 0.000 claims abstract description 9
- 239000002657 fibrous material Substances 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims abstract description 8
- 239000000843 powder Substances 0.000 claims description 5
- 239000000470 constituent Substances 0.000 claims description 3
- 238000010030 laminating Methods 0.000 claims description 2
- PAPBSGBWRJIAAV-UHFFFAOYSA-N ε-Caprolactone Chemical compound O=C1CCCCCO1 PAPBSGBWRJIAAV-UHFFFAOYSA-N 0.000 claims 3
- 239000002002 slurry Substances 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 22
- 150000002596 lactones Chemical class 0.000 abstract description 7
- 239000002994 raw material Substances 0.000 abstract description 4
- 239000003960 organic solvent Substances 0.000 abstract description 3
- 229920000229 biodegradable polyester Polymers 0.000 abstract description 2
- 239000004622 biodegradable polyester Substances 0.000 abstract description 2
- 239000005014 poly(hydroxyalkanoate) Substances 0.000 abstract description 2
- 229920000903 polyhydroxyalkanoate Polymers 0.000 abstract description 2
- 239000002253 acid Substances 0.000 abstract 1
- 239000000126 substance Substances 0.000 description 9
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 6
- 238000011156 evaluation Methods 0.000 description 5
- 238000005470 impregnation Methods 0.000 description 4
- -1 polyethylene Polymers 0.000 description 4
- 229920000098 polyolefin Polymers 0.000 description 4
- 239000002689 soil Substances 0.000 description 4
- 239000002904 solvent Substances 0.000 description 4
- 241000196324 Embryophyta Species 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- WHBMMWSBFZVSSR-UHFFFAOYSA-N 3-hydroxybutyric acid Chemical compound CC(O)CC(O)=O WHBMMWSBFZVSSR-UHFFFAOYSA-N 0.000 description 2
- REKYPYSUBKSCAT-UHFFFAOYSA-N 3-hydroxypentanoic acid Chemical compound CCC(O)CC(O)=O REKYPYSUBKSCAT-UHFFFAOYSA-N 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- 239000002612 dispersion medium Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000010408 film Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- 239000002362 mulch Substances 0.000 description 2
- 229920001610 polycaprolactone Polymers 0.000 description 2
- 239000004632 polycaprolactone Substances 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- IUPHTVOTTBREAV-UHFFFAOYSA-N 3-hydroxybutanoic acid;3-hydroxypentanoic acid Chemical compound CC(O)CC(O)=O.CCC(O)CC(O)=O IUPHTVOTTBREAV-UHFFFAOYSA-N 0.000 description 1
- 229920013642 Biopol™ Polymers 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 239000003905 agrochemical Substances 0.000 description 1
- DQXBYHZEEUGOBF-UHFFFAOYSA-N but-3-enoic acid;ethene Chemical compound C=C.OC(=O)CC=C DQXBYHZEEUGOBF-UHFFFAOYSA-N 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000005038 ethylene vinyl acetate Substances 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229920001519 homopolymer Polymers 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 239000000123 paper Substances 0.000 description 1
- 229920001308 poly(aminoacid) Polymers 0.000 description 1
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 1
- 229920000747 poly(lactic acid) Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 239000004626 polylactic acid Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Protection Of Plants (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Biological Depolymerization Polymers (AREA)
- Artificial Filaments (AREA)
- Paper (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は生分解性樹脂を含むシー
ト状組成物及びシート状成形物に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet composition and a sheet molded article containing a biodegradable resin.
【０００２】さらに詳しくは、特に農作物の収穫を向上
させるために使用する農業用シート、特に農業用マルチ
シートに適したシート状組成物及びシート状成形物関す
るものである。More particularly, the present invention relates to a sheet-shaped composition and a sheet-shaped molded product suitable for an agricultural sheet, particularly an agricultural multi-sheet, which is used for improving the yield of agricultural products.
【０００３】[0003]
【従来の技術】農業用マルチシートは、地温の制御、雑
草の抑制効果、養分の徐放により、作物の収穫量アップ
を目的として用いられている。従来の農業用シートはポ
リエチレンに代表されるようなポリオレフィン、及びそ
れに黒色、銀色、白色等の着色を施した物が中心で、そ
の他の樹脂としては、塩化ビニール樹脂、エチレン酢ビ
樹脂等が用いられている。2. Description of the Related Art Agricultural mulch sheet is used for the purpose of increasing crop yield by controlling soil temperature, suppressing weeds, and releasing nutrients gradually. Conventional agricultural sheets are mainly polyolefins such as polyethylene, and those colored in black, silver, white, etc., and as other resins, vinyl chloride resin, ethylene vinyl acetate resin, etc. are used. Has been.
【０００４】これらの樹脂は安価ではあるが、難分解性
であるため使用後のシートは回収が必要となるが、使用
後の汚れたシートは再利用がしにくく、焼却等の処理を
行う必要がある。このため、農業用マルチシートが必要
な期間が経過した後はシートの強度が弱くなり、土壌の
中に鍬込むと、その後、微生物により完全分解すること
で回収処理が不要なシートが検討されている。Although these resins are inexpensive, they are difficult to decompose and require recovery of used sheets, but dirty sheets after use are difficult to reuse and need to be incinerated. There is. For this reason, the strength of the sheet becomes weaker after the required period for agricultural multi-sheets, and when it is grounded in the soil, it is then considered a sheet that does not require recovery processing because it is completely decomposed by microorganisms. There is.
【０００５】このような、完全分解する農業用シートの
素材として紙を用いることが検討されている。The use of paper as a material for such a completely disintegrating agricultural sheet has been studied.
【０００６】[0006]
【発明が解決しようとする課題】しかし、紙の場合、特
に湿潤時の強度低下が大きく、風雨に耐えられず、破れ
たり、風で吹き飛ばされたりする問題があった。また、
紙の厚みを厚くすることで紙の強度を補うことは、コス
トアップになるだけでなく作業性を損ない好ましくな
い。さらに、紙の替わりに生分解性の樹脂をそのままフ
ィルム化して使用することも考えられるが、現在、一般
的に生分解性の樹脂は高価であり従来のポリオレフィン
製フィルムの代替として使用できる程度の価格ではな
い。However, in the case of paper, there is a problem that the strength of the paper is greatly reduced especially when it is wet, and it cannot withstand wind and rain, and is torn or blown off by wind. Also,
Supplementing the strength of the paper by increasing the thickness of the paper not only increases the cost but also impairs workability, which is not preferable. Furthermore, it is possible to use a biodegradable resin as a film instead of paper, but at present, biodegradable resins are generally expensive and can be used as a substitute for conventional polyolefin films. Not the price.
【０００７】[0007]
【課題を解決するための手段】そこで、紙や繊維状物質
と、生分解性のある非水溶性の樹脂を用いることによ
り、生分解性を保持したまま農業用として十分使用に耐
える強度のシートが得られることを見いだし、本発明に
到達した。[Means for Solving the Problems] Therefore, by using paper or a fibrous substance and a biodegradable, non-water-soluble resin, a sheet having sufficient strength for agricultural use while maintaining biodegradability. The present invention has been achieved, and the present invention has been achieved.
【０００８】以下に本発明を詳細に説明する。The present invention will be described in detail below.
【０００９】使用する生分解性樹脂は、非水溶性の樹脂
で、紙や繊維状物質に含浸可能なものであれば何でも良
い。しかし、ポリオレフィンに完全分解性の樹脂を混練
した樹脂等、非分解樹脂が残るような崩壊性樹脂の使用
は好ましくない。The biodegradable resin used may be any water-insoluble resin that can be impregnated into paper or fibrous substances. However, it is not preferable to use a disintegrating resin such as a resin obtained by kneading a completely decomposable resin with a polyolefin such that a non-decomposable resin remains.
【００１０】好ましい生分解性樹脂としては、ポリヒド
ロキシアルカノエート（例えば３−ヒドロキシ酪酸（Ｐ
ＨＢ）、３−ヒドロキシ吉草酸（ＰＨＶ）でＩＣＩジャ
パン株式会社の商品名バイオポールに代表される樹脂
や、ポリ乳酸等で、微生物により合成された生物由来の
もでも良いし、化学合成による物でも良い）や、ラクト
ン樹脂（ポリカプロラクトン、ポリバレロラクトン等、
ホモポリマーでも共重合体でもよい）、生分解性のポリ
エステル（昭和高分子株式会社のビオノーレに代表され
る低分子量脂肪族ジカルボン酸と低分子量脂肪族ジオー
ルのポリエステル）、ポリアミノ酸等が挙げられる。Preferred biodegradable resins include polyhydroxyalkanoates (eg 3-hydroxybutyric acid (P
HB), 3-hydroxyvaleric acid (PHV), a resin represented by ICI Japan Co., Ltd. under the trade name of Biopol, or polylactic acid, etc., which may be of biological origin synthesized by microorganisms or chemically synthesized. , Or lactone resin (polycaprolactone, polyvalerolactone, etc.)
Examples thereof include homopolymers and copolymers), biodegradable polyesters (polyesters of low molecular weight aliphatic dicarboxylic acids and low molecular weight aliphatic diols represented by Bionore of Showa High Polymer Co., Ltd.), polyamino acids and the like.
【００１１】これらは、単一で使用しても良いし、混合
して使用しても良い。These may be used alone or as a mixture.
【００１２】生分解性樹脂を構成成分に持つシート状組
成物を得る方法としては、使用する生分解性樹脂の特性
により、好ましい方法を用いれば良いが、以下のような
いくつかの方法が挙げられる。As a method for obtaining a sheet-shaped composition having a biodegradable resin as a constituent component, a preferable method may be used depending on the characteristics of the biodegradable resin to be used, but there are several methods as follows. To be
【００１３】まず、生分解性樹脂を有機溶剤に溶解した
溶液またはエマルションを紙やパルプ等の繊維状物質か
らなるシート状物に含浸させる方法である。First, there is a method of impregnating a solution or emulsion in which a biodegradable resin is dissolved in an organic solvent into a sheet-like material made of fibrous material such as paper or pulp.
【００１４】さらに、樹脂溶液またはエマルジョンの中
へ紙やパルプ等の繊維状物質からなるシート状物を浸漬
する方法、あるいは樹脂溶液またはエマルジョンを紙や
パルプ等の繊維状物質からなるシート状物の表面へ塗
布、スプレーすること等の方法で生分解性樹脂成分を含
ませて、その後、溶媒または分散媒を乾燥することによ
りシート状組成物を得る方法が挙げられる。Further, a method of immersing a sheet material made of a fibrous material such as paper or pulp in a resin solution or emulsion, or a sheet material made of a fibrous material such as paper or pulp in the resin solution or emulsion. Examples thereof include a method of incorporating a biodegradable resin component by a method such as coating or spraying on the surface, and then drying a solvent or a dispersion medium to obtain a sheet-shaped composition.
【００１５】使用する溶液またはエマルション中の樹脂
濃度は使用される樹脂の溶液粘度に依存するが、通常は
３〜３０％、好ましくは、５〜２０％である。The resin concentration in the solution or emulsion used depends on the solution viscosity of the resin used, but is usually 3 to 30%, preferably 5 to 20%.
【００１６】溶液またはエマルション中の樹脂濃度が３
％未満の場合、含浸速度は速いが、できあがったシート
状組成物の湿潤強度が十分でない。逆に樹脂濃度が２０
％以上の場合、溶液の粘度が高くなり過ぎて含浸される
樹脂量が過大になるので好ましくない。有機溶剤の種類
は使用される樹脂によって任意に選択可能である。The resin concentration in the solution or emulsion is 3
If it is less than%, the impregnation rate is high, but the wet strength of the resulting sheet-shaped composition is not sufficient. Conversely, the resin concentration is 20
% Is not preferable because the viscosity of the solution becomes too high and the amount of resin impregnated becomes too large. The type of organic solvent can be arbitrarily selected depending on the resin used.
【００１７】次に、生分解性樹脂を混抄する方法があ
る。これは生分解性樹脂粉末またはその繊維状物と紙原
料を混合抄紙後、加熱し樹脂を溶融することにより、シ
ート状組成物を得る方法である。Next, there is a method of mixing biodegradable resins. This is a method in which a sheet composition is obtained by mixing a biodegradable resin powder or a fibrous substance thereof and a paper raw material, and heating the resin to melt the resin.
【００１８】生分解性樹脂をラミネートしてシート状組
成物を得る方法としては、生分解性樹脂の薄膜を紙やパ
ルプ等の繊維状物質からなるシート状物と加熱プレスで
融着する方法や、生分解性樹脂粉末を紙やパルプ等の繊
維状物質からなるシート状物表面に散布して、加熱プレ
スで融着する方法がある。As a method for laminating a biodegradable resin to obtain a sheet-like composition, a method in which a thin film of the biodegradable resin is fused with a sheet-like article made of a fibrous substance such as paper or pulp by a heating press, or There is a method in which a biodegradable resin powder is sprinkled on the surface of a sheet material made of a fibrous substance such as paper or pulp and then fused by a heating press.
【００１９】さらに、生分解性樹脂を構成成分に持つシ
ート状組成物を得る方法としては、粉末状および/また
は繊維状の生分解性樹脂と粉末状および/または繊維状
物の混合物を加熱し、樹脂成分を溶融し、シート状に一
体化成形して成形物として得る方法、粉末状および/ま
たは繊維状物よりなるシート状物に生分解性樹脂を上記
の方法等でコートして得る方法が挙げられる。Further, as a method for obtaining a sheet-like composition having a biodegradable resin as a constituent component, a mixture of a powdery and / or fibrous biodegradable resin and a powdery and / or fibrous substance is heated. , A method of melting a resin component and integrally molding it into a sheet to obtain a molded article, a method of coating a sheet-like material composed of a powdery and / or fibrous material with a biodegradable resin by the above method or the like. Is mentioned.
【００２０】ここで述べる粉末状および/または繊維状
物というのは通常他の用途に使用されている製品でもよ
いが、特に経済性が要求される農業分野に使用する場合
は、例えば大鋸屑、籾ガラ、その他植物より得られる物
の粉砕物や、製紙業の工程より出る廃棄物等を使用する
ことが好ましい。The powdery and / or fibrous substances mentioned here may be products usually used for other purposes, but when they are used in the agricultural field where economic efficiency is particularly required, for example, sawdust and paddy It is preferable to use a crushed product obtained from glass and other plants, and a waste produced from the process of the paper manufacturing industry.
【００２１】次に、生分解性樹脂を含浸させた含浸紙か
らなる農業用シートを得る方法としては、一般的には、
生分解性樹脂溶液またはエマルジョン中へ紙を浸漬、ま
たは生分解性樹脂溶液またはエマルジョンを紙表面へ塗
布、スプレー等により紙に生分解性樹脂溶液を含ませ
て、その後、溶媒または分散媒を乾燥する方法、また、
樹脂粉末または繊維状物と紙原料を混合抄紙後、加熱し
樹脂を溶融する方法、紙の上に樹脂粉末を散布後、加熱
溶融する方法、樹脂の薄膜を紙と加熱プレスで融着する
等の方法が挙げられる。複数の樹脂を併用する等の場合
は、含浸方法としてこれらを併用するのも良い。Next, as a method for obtaining an agricultural sheet made of impregnated paper impregnated with a biodegradable resin, generally,
Dip the paper in the biodegradable resin solution or emulsion, or apply the biodegradable resin solution or emulsion to the surface of the paper, spray the paper with the biodegradable resin solution, and then dry the solvent or dispersion medium. How to do
After mixing resin powder or fibrous material and paper raw material, heating to melt the resin, spraying the resin powder on the paper and then heating and melting, and fusing the resin thin film to the paper with a heating press, etc. The method of is mentioned. When a plurality of resins are used in combination, these may be used in combination as an impregnation method.
【００２２】一方、使用される紙は、特に限定されない
が、厚みは、含浸加工を損なわない厚みであること、農
作業性を損なわない厚みであることが好ましい。On the other hand, the paper to be used is not particularly limited, but the thickness is preferably a thickness that does not impair the impregnation process and a thickness that does not impair the agricultural workability.
【００２３】農作業性からは、現在使用されているポリ
オレフィンシートと同等程度の厚みが、好ましい。具体
的には１〜0.01ｍｍ、好ましくは、0.3〜0.05ｍｍであ
る。From the viewpoint of agricultural workability, it is preferable that the thickness is the same as that of the polyolefin sheets currently used. Specifically, it is 1 to 0.01 mm, preferably 0.3 to 0.05 mm.
【００２４】厚すぎると１ロール当たりの長さが短くな
り、長い畝への敷設が一回で出来ないし、薄すぎると強
度が不足し、含浸樹脂量を増やさなければならなくな
る。If it is too thick, the length per roll becomes short, and it is not possible to lay it on a long ridge at one time. If it is too thin, the strength becomes insufficient and the amount of impregnated resin must be increased.
【００２５】また、紙は、中に腐葉土や、バーク等、肥
料、農薬成分を含んだ物であっても構わない。The paper may be mulch, bark or the like containing fertilizer and agrochemical components.
【００２６】樹脂の塗布量、含浸量またはラミネ−ト量
は強度、作業性および経済性の観点から０．５〜２０ｇ
/ｍ2、好ましくは、１〜５ｇ/ｍ2である。The amount of resin applied, the amount of impregnation or the amount of laminate is 0.5 to 20 g from the viewpoint of strength, workability and economy.
/ m 2 , preferably 1 to 5 g / m 2 .
【００２７】紙の強度は、紙の原材料、製法により同じ
厚みでも大きく変わるので、使用する樹脂の強度との組
み合わせで、必要な紙強度を決定することが好ましい。Since the strength of paper greatly varies depending on the raw material of the paper and the manufacturing method, even if the thickness is the same, it is preferable to determine the required paper strength in combination with the strength of the resin used.
【００２８】使用する生分解性樹脂の分子量は、高い方
が少ない樹脂使用量で目的の強度が得られるので好まし
い。The higher the molecular weight of the biodegradable resin to be used, the better the desired strength can be obtained with a small amount of the resin used.
【００２９】例えば、ラクトン樹脂（ポリカプロラクト
ン）を例に挙げると、相対粘度1.4以下の樹脂では、補
強効果が少ないので、相対粘度がそれ以上の樹脂を使用
するのが好ましい。このようにして樹脂を含浸した紙
は、水湿潤時の強度が上がり、農業用シートとして使用
することができるようになる。For example, taking a lactone resin (polycaprolactone) as an example, a resin having a relative viscosity of 1.4 or less has a small reinforcing effect, so that it is preferable to use a resin having a relative viscosity of more than that. Thus, the resin-impregnated paper has higher strength when wet with water, and can be used as an agricultural sheet.
【００３０】一般的に、農業用マルチシート用途では、
使用期間の初めの３ヶ月間は作物が小さいので、この間
地温の制御や雑草の抑制効果を維持する必要があり、シ
ートの耐久性を要する。作物収穫後は、土壌の中に鍬込
めるように強度が低下する必要がある。Generally, in agricultural multi-sheet applications,
Since the crops are small during the first 3 months of the use period, it is necessary to maintain the soil temperature control and weed control effects during this period, and the durability of the sheet is required. After the crop is harvested, its strength needs to be reduced so that it can be ground into the soil.
【００３１】次に具体的に実施例を挙げて、説明する。Next, specific examples will be described.
【００３２】［実施例１］ラクトン樹脂ＰＣＬ−Ｈ７
［ダイセル化学工業（株）製、相対粘度２．３５〜３．
２０］の５％トルエン溶液を作製し、２４ｇ/ｍ2の紙に
浸漬塗布した。[Example 1] Lactone resin PCL-H7
[Manufactured by Daicel Chemical Industries, Ltd., relative viscosity 2.35-3.
20] of 5% toluene solution was prepared and dip-coated on 24 g / m 2 of paper.
【００３３】塗布後、温風乾燥し、溶剤が揮発して質量
が一定になったところで、樹脂塗布量１．９ｇ/ｍ2の含
浸紙を得た。これを屋外の畑の畝にマルチャーを用いて
敷設し、分解性、耐久性の試験に供した。評価は、耐久
性については、シートの破れの発生の有無を外観で評価
し、使用後の強度低下は、鍬込みができるか否かのフィ
ールド評価で行った。After application, the coated paper was dried with warm air, and when the solvent was volatilized and the mass became constant, an impregnated paper having a resin application amount of 1.9 g / m 2 was obtained. This was laid on a ridge of an outdoor field using a mulcher, and subjected to a test of decomposability and durability. Regarding the durability, the presence or absence of breakage of the sheet was evaluated by appearance in terms of durability, and the decrease in strength after use was evaluated by field evaluation of whether or not hoeing was possible.
【００３４】［実施例２］ラクトン樹脂ＰＣＬ−Ｈ７の
濃度を７％にし、同様の方法で、樹脂塗布量２．９ｇ/
ｍ2の含浸紙を得た。評価は、実施例１と同様に行っ
た。[Example 2] The concentration of the lactone resin PCL-H7 was set to 7%, and the resin coating amount was 2.9 g /
An m 2 impregnated paper was obtained. The evaluation was performed in the same manner as in Example 1.
【００３５】［比較例１］ラクトン樹脂ＰＣＬ−Ｈ１
［ダイセル化学工業（株）製、相対粘度１．２５〜１．
３０］の１５％トルエン溶液を作成し、２４ｇ/ｍ2の紙
に浸漬塗布した。Comparative Example 1 Lactone Resin PCL-H1
[Manufactured by Daicel Chemical Industries, Ltd., relative viscosity 1.25 to 1.
30] of 15% in toluene solution was prepared and dip-coated on 24 g / m 2 of paper.
【００３６】塗布後、温風乾燥し、溶剤が揮発して質量
が一定になったところで、樹脂塗布量２．５ｇ/ｍ2の含
浸紙を得た。評価は、実施例１と同様に行った。After application, the coated paper was dried with warm air, and when the solvent was volatilized and the mass became constant, an impregnated paper having a resin application amount of 2.5 g / m 2 was obtained. The evaluation was performed in the same manner as in Example 1.
【００３７】［比較例２］ラクトン樹脂を使用しない
で、紙のみで、実施例１と同様の評価を行った。[Comparative Example 2] The same evaluation as in Example 1 was performed using only paper without using a lactone resin.
【００３８】［比較例３］従来のポリエチレン製マルチ
シートで、実施例１と同様の評価を行った。Comparative Example 3 The same evaluation as in Example 1 was performed using a conventional polyethylene multi-sheet.
【００３９】 結果 耐久性（シート破れの有無） 鍬込みの可否 敷設後１ヶ月 敷設後３ヶ月 敷設後５ヶ月 実施例１ 無し 無し 可能 実施例２ 無し 無し 可能 比較例１ 有り 有り 可能 比較例２ 有り 有り 可能 比較例３ 無し 無し 不可 Result Durability (presence or absence of sheet breakage) Possibility of hoeing 1 month after laying 3 months after laying 5 months after laying Example 1 No No No Yes Example 2 No No No Yes Comparative Example 1 Yes Yes Yes Yes Comparative Example 2 Yes Yes Yes Yes Yes Comparative Example 3 None None Not possible
【００４０】[0040]
【発明の効果】実施例ではいずれも５ヶ月後は完全に分
解が進んでおり、鍬込みに何の支障もなかった。また、
敷設後３ヶ月間は、破れの発生が認められず、マルチシ
ートとして十分の強度を有していた。[Effects of the Invention] In each of the examples, the decomposition was completely progressed after 5 months, and there was no problem in the plow. Also,
No breakage was observed for 3 months after the installation, and the multi-sheet had sufficient strength.
Claims (10)
とするシート状組成物。1. A sheet-shaped composition comprising a biodegradable resin as a constituent component.
リーを紙に含浸させることを特徴とするシート状組成
物。2. A sheet-like composition, characterized in that paper is impregnated with a biodegradable resin solution or emulsion slurry.
シート状組成物。3. A sheet-like composition comprising a biodegradable resin mixed therein.
とを特徴とするシート状組成物。4. A sheet-like composition, which comprises laminating a biodegradable resin film.
脂と粉末状および/または繊維状物の混合物からなるシ
ート状成形物。5. A sheet-shaped molded article comprising a mixture of powdery and / or fibrous biodegradable resin and powdery and / or fibrous material.
ート状物に生分解性樹脂をコートしたことを特徴とする
シート状組成物。6. A sheet-shaped composition comprising a sheet-shaped material made of powder and / or fibrous material coated with a biodegradable resin.
ことを特徴とする農業用シート。7. An agricultural sheet comprising an impregnated paper impregnated with a biodegradable resin.
請求項１記載のシート状組成物。8. The sheet-shaped composition according to claim 1, wherein the biodegradable resin is a caprolactone resin.
請求項５記載のシート状成形物。9. The sheet-shaped molded product according to claim 5, wherein the biodegradable resin is a caprolactone resin.
る請求項７記載の農業用シート。10. The agricultural sheet according to claim 7, wherein the biodegradable resin is a caprolactone resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27383193A JPH07123876A (en) | 1993-11-01 | 1993-11-01 | Sheet-shaped composition containing biodegradable resin and sheet-shaped molded article |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27383193A JPH07123876A (en) | 1993-11-01 | 1993-11-01 | Sheet-shaped composition containing biodegradable resin and sheet-shaped molded article |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07123876A true JPH07123876A (en) | 1995-05-16 |
Family
ID=17533161
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27383193A Pending JPH07123876A (en) | 1993-11-01 | 1993-11-01 | Sheet-shaped composition containing biodegradable resin and sheet-shaped molded article |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07123876A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999063001A1 (en) * | 1998-05-30 | 1999-12-09 | Daicel Chemical Industries, Ltd. | Biodegradable polyester resin composition, biodisintegrable resin composition, and molded objects of these |
| JP2003013391A (en) * | 2001-06-26 | 2003-01-15 | Toppan Printing Co Ltd | Biodegradable paper sheet and paper container |
| JP2004292969A (en) * | 2003-03-26 | 2004-10-21 | Showa Highpolymer Co Ltd | Biodegradable polyester fiber composite material |
| KR100963375B1 (en) * | 2008-09-19 | 2010-06-14 | 김성보 | Wrinkle fabric, manufacturing method and functional mulching paper including wrinkle fabric |
| CN106012689A (en) * | 2016-04-27 | 2016-10-12 | 新疆瑞新生物科技开发有限公司 | Paper-based mulching film and manufacturing method thereof |
-
1993
- 1993-11-01 JP JP27383193A patent/JPH07123876A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999063001A1 (en) * | 1998-05-30 | 1999-12-09 | Daicel Chemical Industries, Ltd. | Biodegradable polyester resin composition, biodisintegrable resin composition, and molded objects of these |
| JP2003013391A (en) * | 2001-06-26 | 2003-01-15 | Toppan Printing Co Ltd | Biodegradable paper sheet and paper container |
| JP2004292969A (en) * | 2003-03-26 | 2004-10-21 | Showa Highpolymer Co Ltd | Biodegradable polyester fiber composite material |
| KR100963375B1 (en) * | 2008-09-19 | 2010-06-14 | 김성보 | Wrinkle fabric, manufacturing method and functional mulching paper including wrinkle fabric |
| CN106012689A (en) * | 2016-04-27 | 2016-10-12 | 新疆瑞新生物科技开发有限公司 | Paper-based mulching film and manufacturing method thereof |
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