JPH048771Y2 - - Google Patents
Info
- Publication number
- JPH048771Y2 JPH048771Y2 JP1986068238U JP6823886U JPH048771Y2 JP H048771 Y2 JPH048771 Y2 JP H048771Y2 JP 1986068238 U JP1986068238 U JP 1986068238U JP 6823886 U JP6823886 U JP 6823886U JP H048771 Y2 JPH048771 Y2 JP H048771Y2
- Authority
- JP
- Japan
- Prior art keywords
- nonwoven fabric
- light transmittance
- covering material
- agricultural covering
- growth
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 238000002834 transmittance Methods 0.000 claims description 18
- 238000004078 waterproofing Methods 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 239000003795 chemical substances by application Substances 0.000 claims description 9
- 238000010521 absorption reaction Methods 0.000 claims description 7
- 239000007787 solid Substances 0.000 claims description 3
- 239000004745 nonwoven fabric Substances 0.000 description 35
- 239000000463 material Substances 0.000 description 18
- 239000000835 fiber Substances 0.000 description 13
- 230000035699 permeability Effects 0.000 description 10
- 230000000052 comparative effect Effects 0.000 description 8
- 230000002209 hydrophobic effect Effects 0.000 description 8
- 230000012010 growth Effects 0.000 description 7
- 239000011347 resin Substances 0.000 description 7
- 229920005989 resin Polymers 0.000 description 7
- 241000196324 Embryophyta Species 0.000 description 5
- 241000219315 Spinacia Species 0.000 description 5
- 235000009337 Spinacia oleracea Nutrition 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- -1 polyethylene Polymers 0.000 description 4
- 230000006378 damage Effects 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 229920001296 polysiloxane Polymers 0.000 description 3
- 239000004743 Polypropylene Substances 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 238000007756 gravure coating Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 208000012868 Overgrowth Diseases 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- 230000002595 cold damage Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 208000037824 growth disorder Diseases 0.000 description 1
- 230000009036 growth inhibition Effects 0.000 description 1
- 238000003306 harvesting Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000002075 main ingredient Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002503 metabolic effect Effects 0.000 description 1
- 230000004060 metabolic process Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000008635 plant growth Effects 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 230000002940 repellent Effects 0.000 description 1
- 239000005871 repellent Substances 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000036435 stunted growth Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000002277 temperature effect Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/25—Greenhouse technology, e.g. cooling systems therefor
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/14—Measures for saving energy, e.g. in green houses
Landscapes
- Protection Of Plants (AREA)
- Greenhouses (AREA)
Description
〔産業上の利用分野〕
本考案は不織布からなる農業被覆材に関し、と
くに露地栽培、トンネル栽培、ハウス栽培用途に
好適な農業被覆材に関する。
〔従来の技術〕
不織布は、保温性と通気性を兼ね備えた素材と
して、ハウス内カーテン用あるいはトンネル栽培
や露地栽培のベタ掛け用などの各種農業被覆材と
して用いられている。
しかし、従来の不織布は、疎水性樹脂の繊維か
らなつていても繊維間に空〓があるため、防水性
はほとんどなく、たとえば雨水が不織布表面から
繊維間を通過して内部にまで浸透し、ついには反
対表面に到達してトンネル内に雨水が降り、作物
の成育を阻害する虞があつた。
また、従来の不織布は、主にハウス内カーテン
用途を想定しているので、保温性、強度および柔
軟性を高めるために比較的細い繊維によつて作ら
れた目付量の大きい不織布が主体である。ところ
が、これら従来から市販されている農業用の不織
布を使用して露地栽培やハウス栽培等におけるベ
タ掛けあるいはトンネル等の固定張り用途に用い
ると、無使用の場合に比べて相対的に成育促進効
果はあるものの、ある時期においては寧ろ徒長な
どの成育不良、奇型化を生じる可能性が高い。こ
のような現象が現れる効果としては、従来使用さ
れている不織布の多くが強度と柔軟性および見ば
えを良くするため細繊維による目付量の大なるも
のであり、故に布目の密度が密であり、そのため
に光線透過率（透光性）が低いことによるもので
あると推定されている。すなわち１〜２月のよう
な厳冬期においては、日照時間が短くかつ光線強
度も弱いためベタ掛けに用いられた不織布によつ
て太陽光射不足となり、地温確保や植物の代謝作
用が阻害されるものと考えられる。
〔考案が解決しようとする問題点〕
本考案は、このような従来の問題点を解決する
ことを目的とし、具体的には解雪、解霜あるいは
雨水などによる水の害から作物を守ることのでき
る農業被覆材を提供することを目的とする。本考
案の第２の目的は、太陽光照射不足による地温お
よび代謝作用の阻害の度のない農業被覆材を提供
することにある。本考案の第３の目的は、前記と
逆に夏場の強い太陽光線による植物の夏枯を防止
でき、かつ、徒長などの成育阻害は防止できる農
業被覆材をも提供することにある。本考案の第４
の目的は、以上のような性能を有しながら保温
性、通気性も兼ね備えた農業被覆材を提供するこ
とにある。
〔問題点を解決するための手段〕
すなわち本考案は、少なくとも片面に、防水剤
が固形分として0.05〜５ｇ／m2塗布されて防水処
理が施された、目付が10〜100ｇ／m2、光線透過
率が40〜95％である、吸水率0.01％以下の疎水性
樹脂の不織布からなることを特徴とする農業被覆
材である。
〔作用〕
本考案の農業被覆材を構成する不織布は、湿式
不織布、乾式不織布のいずれでもよく、また遠心
したフイルムをスプリツトして網状スプリツトウ
エブしたものを積層固定したスプリツトフアイバ
ー不織布を用いてもかまわない。
本考案の不織布は、繊維またはフイルム形成性
の疎水性樹脂からなるものであり、必要に応じ着
色されていてもよい。すなわち、疎水性樹脂は実
質的に水を吸収しないので、吸水乾燥による収縮
率がないかあつたとしても極小さく、故に展張敷
設時に余裕しろを考える必要がなく作業が簡単で
初心者でも綺麗に設置できる。さらに使用後ロー
ル状に巻いて保管しても乾燥収縮により破断する
というトラブルも生じない。不織布を構成する樹
脂が疎水性であるかどうかは、たとえば吸水率で
判断することができる。すなわち、一定面積フイ
ルム、一定長の繊維または一定重量の繊維塊ある
いは一定面積の不織布を用いて、JIS K7209に準
じて吸水率を測定し、吸水率が0.01％以下であれ
ば疎水性である。本考案においては、このように
0.01％以下の吸水率を示す疎水性樹脂であれば制
限はない。しかし、生産性、経済性、強度などの
観点からはポリオレフインとくにポリエチレン、
ポリプロピレンが好ましい。
不織布の目付量は10〜100ｇ／m2の範囲内に調
整されたものを用いる。10ｇ／m2未満では不織布
としての形態がとれないか、または農業被覆材と
して使用に耐えるだけの強度や保温性に乏しくな
る。一方、100ｇ／m2を越えると、不織布を構成
する繊維あるいはスプリツトフアイバーの太さや
幅を調整しても光線透過率の悪化や通気性、透湿
性の低下がさけられず、植物の成育に悪影響を与
え農業被覆材としての使用に耐え難い。本考案の
場合、前述の範囲の中でも、農業被覆材としての
性能および取扱い性のバランスの面から10〜40
ｇ／m2とくに15〜30ｇ／m2の目付量のものが好適
である。本考案の場合、この不織布に更に通気
性、透湿性を損わない範囲で防水処理が施されて
いる。このような防水処理としては、市販の防水
剤たとえばパラフイン系金属石ケン、シリコーン
系防水剤、ジルコニウム系防水剤あるいはフツ素
系防水剤などをグラビアコーテイングや噴霧法な
どにより不織布表面に塗布することにより可能で
ある。このような防水剤の塗布によれば、原反不
織布の諸性質をほとんど損なわずに不織布表面の
防水、撥水処理が可能である。より具体的には、
不織布に対し防水剤の固形分として0.05〜５ｇ／
m2、とくに0.3〜１ｇ／m2の割合で塗布すると透
湿性を損なわずに概ね良好な防水処理が行える。
本考案では以上の不織布のうち光線透過率で40
〜95％の範囲のものを選択する。すなわち、40％
を下廻ると、光線不足により徒長などを生じ、植
物の健全な成育が保障されない。一方、95％を越
えた不織布は製造に非常に高度な技術を要して高
価になるうえ、強度や保温性も乏しいものとなり
農業被覆材としての使用に耐え難い。本考案の場
合、どのような時期にどのような作物を対象とす
る農業被覆材として用いられるかによつて。前記
光線透過率の範囲内の中から適宜選択される。す
なわち冬場のように比較的太陽光線強度が弱く、
かつ、日照時間も短いような季節に用いられる場
合には、光線透過率の大きいものがよく、したが
つて前記範囲中でも約80％以上とくに85〜95％の
光線透過率のものを選択する。一方、夏場のよう
に太陽光線強度が強く、かつ、日照時間も長い場
合には、夏枯れや早期抽苔などを防止するため、
冬期とは逆に比較的光線透過率の低い方がよく、
この点から80％以下のものが選択される。とくに
夏場の場合、長雨などの雨降りによる成育阻害の
虞が多分にあるため、防水処理を施した本考案品
の有用性は大きい。しかし前述の如く、光線不足
による徒長を防止するため少なくとも40％の光線
透過率は必要である。尚、光線透過率の測定方法
は後述する。
〔実施例〕
実施例で使用した不織布の光線透過率は次のよ
うにして測定した。すなわち、財団法人日本化学
繊維検査協会の透光率試験法により、具体的には
サークルライン白色20W灯の下方に縦32cm、横32
cm、高さ45cmの箱を設備する。箱の天井部には測
定対象の不織布を取付けてあり、光源との距離は
25cmに保たれ、また箱の内側で天井の不織布面か
ら30cm下方には照度計が設備してある。暗室内で
試料の不織布を取付けずに照度L1を測定し、次
に不織布を取付けて照度L2を測定する。光線透
過率は次式によつて定まる。
光線透過率（％）＝L2／L1×100
また透湿度はJIS Z0208の方法によつて測定し
た値（ｇ／m2・24hr）であり、通気性はJIS
P8117の方法によつて測定した値（ガーレ秒）で
あり、後述の実施例１および２、並びに比較例１
および２では、このガーレ秒が０となつている
（表１参照）が、これは非常に大きな通気性を有
することを示している。
実施例１〜２および比較例１〜４
エマルジヨン系シリコーン防水剤（主剤メチル
ハイドロジエンポリシロキサン）でグラビアコー
テイング法によつて１ｇ／m2の割合で塗布して片
面が表面処理された８デニールのポリプロピレン
繊維からなる目付30ｇ／m2および光線透過率66％
の不織布（実施例１）および1.5デニールのポリ
エステル繊維からなり目付25ｇ／m2および光線透
過率65％の不織布（実施例２）を用いて、３条×
35ｍ×うね幅90cmのホウレン草のトンネル栽培を
７月に行つた。
また実施例１および２の不織布の防水処理を施
していないもの（比較例１および２）、さらに寒
冷紗（比較例３）、寒冷紗とポリ塩化ビニルフイ
ルムの積層体（比較例４）を使用して実施例と同
様にホウレン草のトンネル栽培を行つた。
その結果、実施例１および２ではホウレン草の
成育が良好であつたが、比較例１〜３では防水性
に劣るため、栽培期間中の降雨の栽培の雨水がト
ンネル内に降り、ホウレン草の葉面が傷み、商品
価値が下落した。また、比較例４は防水性がある
ものの透湿性がないため、高温障害が発生し、ホ
ウレン草の成育が妨げられた。
尚、実施例１〜２および比較例１〜２の不織布
の性質を表１に示す。
[Industrial Application Field] The present invention relates to an agricultural covering material made of nonwoven fabric, and particularly to an agricultural covering material suitable for open field cultivation, tunnel cultivation, and greenhouse cultivation. [Prior Art] Nonwoven fabrics are materials that have both heat retention and breathability, and are used as various agricultural covering materials, such as curtains inside greenhouses and blankets for tunnel cultivation and open field cultivation. However, even though conventional nonwoven fabrics are made of hydrophobic resin fibers, there are spaces between the fibers, so they have almost no waterproof properties.For example, rainwater can penetrate from the surface of the nonwoven fabric, passing between the fibers, and penetrating into the interior. Eventually, rainwater would reach the opposite surface and fall into the tunnel, threatening to inhibit the growth of crops. In addition, since conventional nonwoven fabrics are mainly intended for use as curtains inside greenhouses, they are mainly nonwoven fabrics with a large basis weight made from relatively thin fibers to improve heat retention, strength, and flexibility. . However, when these conventionally commercially available agricultural nonwoven fabrics are used for fixed tensioning purposes such as bedding or tunnels in open field cultivation or greenhouse cultivation, the growth promotion effect is relatively lower than when they are not used. However, at certain times, there is a high possibility that they will suffer from poor growth such as elongation and deformity. The effect of this phenomenon is that many of the nonwoven fabrics conventionally used have a large basis weight of fine fibers to improve strength, flexibility, and appearance, and therefore the density of the fabric is dense. It is presumed that this is due to the low light transmittance (light transmittance). In other words, during the harsh winter months of January and February, the sunlight hours are short and the intensity of the light is low, so the non-woven fabric used for hanging the blankets results in insufficient sunlight, which inhibits soil temperature and plant metabolism. considered to be a thing. [Problems that the invention aims to solve] The purpose of this invention is to solve these conventional problems, and specifically, to protect crops from water damage caused by melting snow, melting frost, or rainwater. The purpose is to provide agricultural covering materials that can be used for agricultural purposes. A second object of the present invention is to provide an agricultural covering material that does not inhibit soil temperature and metabolic effects due to insufficient sunlight irradiation. A third object of the present invention is to provide an agricultural covering material that can prevent plants from withering due to strong sunlight in the summer, and prevent growth inhibition such as elongation. The fourth part of this invention
The purpose of this invention is to provide an agricultural covering material that has the above-mentioned properties and also has heat retention and breathability. [Means for Solving the Problems] That is, the present invention has a waterproofing agent coated on at least one side with a solid content of 0.05 to 5 g/m 2 , and has a basis weight of 10 to 100 g/m 2 . This agricultural covering material is made of a hydrophobic resin nonwoven fabric with a light transmittance of 40 to 95% and a water absorption rate of 0.01% or less. [Function] The nonwoven fabric constituting the agricultural covering material of the present invention may be either a wet-laid nonwoven fabric or a dry-laid nonwoven fabric, or may be a split fiber nonwoven fabric obtained by laminating and fixing net-like split webs obtained by splitting centrifuged films. do not have. The nonwoven fabric of the present invention is made of fiber or film-forming hydrophobic resin, and may be colored if necessary. In other words, hydrophobic resin does not substantially absorb water, so there is no shrinkage due to water absorption and drying, or even if it does, it is very small.Therefore, there is no need to consider the allowance when spreading and laying, making the work easy and even beginners can install it neatly. can. Furthermore, even if it is rolled up and stored after use, it will not break due to drying shrinkage. Whether or not the resin constituting the nonwoven fabric is hydrophobic can be determined, for example, by its water absorption rate. That is, using a film of a certain area, a fiber of a certain length, a fiber mass of a certain weight, or a nonwoven fabric of a certain area, the water absorption rate is measured according to JIS K7209, and if the water absorption rate is 0.01% or less, it is hydrophobic. In this invention, in this way
There is no restriction as long as it is a hydrophobic resin that exhibits a water absorption rate of 0.01% or less. However, from the viewpoint of productivity, economy, strength, etc., polyolefins, especially polyethylene,
Polypropylene is preferred. The basis weight of the nonwoven fabric is adjusted within the range of 10 to 100 g/m 2 . If it is less than 10 g/m 2 , it will not be able to take the form of a nonwoven fabric, or it will lack sufficient strength and heat retention to withstand use as an agricultural covering material. On the other hand, if it exceeds 100 g/m 2 , even if you adjust the thickness and width of the fibers or split fibers that make up the nonwoven fabric, deterioration of light transmittance, air permeability, and moisture permeability cannot be avoided, resulting in poor plant growth. It has a negative effect and cannot be used as an agricultural covering material. In the case of the present invention, within the above range, 10 to 40
g/m 2 In particular, those having a basis weight of 15 to 30 g/m 2 are suitable. In the case of the present invention, this nonwoven fabric is further waterproofed to the extent that air permeability and moisture permeability are not impaired. Such waterproofing can be done by applying a commercially available waterproofing agent, such as paraffin-based metal soap, silicone-based waterproofing agent, zirconium-based waterproofing agent, or fluorine-based waterproofing agent, to the surface of the nonwoven fabric by gravure coating or spraying. It is possible. By applying such a waterproofing agent, the surface of the nonwoven fabric can be treated to be waterproof and water repellent without substantially impairing the properties of the raw nonwoven fabric. More specifically,
0.05-5g/solid content of waterproofing agent for non-woven fabric
m 2 , especially when applied at a rate of 0.3 to 1 g/m 2 , generally good waterproofing can be achieved without impairing moisture permeability. In this invention, among the above nonwoven fabrics, 40% in terms of light transmittance
Choose one in the ~95% range. i.e. 40%
If the plant is placed under the sun, the plant may become elongated due to lack of light, and the healthy growth of the plant is not guaranteed. On the other hand, nonwoven fabrics with a content of more than 95% require very advanced technology to manufacture, are expensive, and have poor strength and heat retention, making them difficult to use as agricultural coverings. In the case of this invention, it depends on what period and what kind of crops it is used as an agricultural covering material for. The light transmittance is appropriately selected from within the above range of light transmittance. In other words, the intensity of sunlight is relatively weak like in winter,
Moreover, when used in a season with short sunshine hours, a material with a high light transmittance is preferable, and therefore a material with a light transmittance of about 80% or more, particularly 85 to 95%, is selected within the above range. On the other hand, when the sun's rays are strong and the daylight hours are long, such as in summer, to prevent summer wilt and early moss bolting,
Contrary to winter, it is better to have relatively low light transmittance.
From this point, those with 80% or less are selected. Particularly in the summer, there is a high risk of stunted growth due to long rains, so the waterproof product of the present invention is highly useful. However, as mentioned above, a light transmittance of at least 40% is required to prevent elongation due to insufficient light. Note that the method for measuring the light transmittance will be described later. [Example] The light transmittance of the nonwoven fabric used in the example was measured as follows. In other words, according to the light transmittance test method of the Japan Chemical Fiber Inspection Association, specifically, the area below the circle line white 20W light is 32 cm long and 32 cm wide.
A box with a height of 45 cm and a height of 45 cm is equipped. The nonwoven fabric to be measured is attached to the ceiling of the box, and the distance from the light source is
The light intensity was maintained at 25 cm, and a light meter was installed inside the box 30 cm below the non-woven surface of the ceiling. Illuminance L 1 is measured in a dark room without attaching the sample nonwoven fabric, and then illuminance L 2 is measured with the nonwoven fabric attached. The light transmittance is determined by the following equation. Light transmittance (%) = L 2 /L 1 × 100 Moisture permeability is the value (g/m 2・24hr) measured according to the JIS Z0208 method, and air permeability is the value measured by the JIS Z0208 method.
This is a value (Gurley seconds) measured by the method of P8117, and is a value measured in Examples 1 and 2 and Comparative Example 1 described below.
The Gurley seconds are 0 for No. 2 and No. 2 (see Table 1), which indicates that they have very high air permeability. Examples 1 to 2 and Comparative Examples 1 to 4 An 8-denier film whose surface was treated on one side by applying an emulsion-based silicone waterproofing agent (main ingredient methylhydrodiene polysiloxane) at a rate of 1 g/m 2 by gravure coating method. Made of polypropylene fiber, fabric weight 30g/ m2 and light transmittance 66%
Using a nonwoven fabric (Example 1 ) of
Spinach was cultivated in a tunnel measuring 35 m x 90 cm in width in July. In addition, non-woven fabrics of Examples 1 and 2 that were not waterproofed (Comparative Examples 1 and 2), cheesecloth (Comparative Example 3), and a laminate of cheesecloth and polyvinyl chloride film (Comparative Example 4) were used. Spinach was cultivated in a tunnel in the same manner as in the example. As a result, the growth of spinach was good in Examples 1 and 2, but in Comparative Examples 1 to 3, the waterproofness was poor, so rainwater from cultivation during the cultivation period fell into the tunnel, and the spinach leaves surface were damaged and the product value decreased. Furthermore, although Comparative Example 4 had waterproof properties, it did not have moisture permeability, so high temperature damage occurred and the growth of spinach was hindered. Table 1 shows the properties of the nonwoven fabrics of Examples 1 and 2 and Comparative Examples 1 and 2.
以上述べて来たように、本考案の農業被覆材は
通気性、透湿性、保温性、透光性に優れるうえ、
防水性をも有するので、作物の収穫時期を早めた
り、収穫量を増加したり、作物を寒害から守つた
り、徒長などの不良成育をなくしたり、雨水など
の水害から作物を守つたりすることができる。
また、本考案の農業被覆材は、疎水性樹脂から
なるものであるため、展張敷設時に余裕しろを考
える必要がなく作業が簡単で初心者でも綺麗に設
置できる。さらに使用後ロール状に巻いて保管し
ても乾燥収縮により破断するというトラブルも生
じない。
As mentioned above, the agricultural covering material of the present invention has excellent breathability, moisture permeability, heat retention, and translucency.
Since it is also waterproof, it can speed up the harvest of crops, increase yields, protect crops from cold damage, eliminate poor growth such as overgrowth, and protect crops from water damage caused by rainwater. be able to. In addition, since the agricultural covering material of the present invention is made of hydrophobic resin, there is no need to consider allowances when spreading and laying, making the work simple and even beginners able to install it neatly. Furthermore, even if it is rolled up and stored after use, it will not break due to drying shrinkage.
第１図は本考案の農業被覆材の断面を示す図で
ある。
１……不織布層、２……防水層。
FIG. 1 is a cross-sectional view of the agricultural covering material of the present invention. 1...Nonwoven fabric layer, 2...Waterproof layer.
Claims (1)
５ｇ／m2塗布されて防水処理が施され、目付が10
〜100ｇ／m2、光線透過率が40〜95％である、吸
水率が0.01％以下の疎水生樹脂の不織布からなる
ことを特徴とする農業被覆材。 Waterproofing agent on at least one side as solid content 0.05 ~
It is coated with 5g/ m2 for waterproofing and has a basis weight of 10.
100 g/m 2 , a light transmittance of 40 to 95%, and a water absorption of 0.01% or less.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986068238U JPH048771Y2 (en) | 1986-05-08 | 1986-05-08 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986068238U JPH048771Y2 (en) | 1986-05-08 | 1986-05-08 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62181142U JPS62181142U (en) | 1987-11-17 |
| JPH048771Y2 true JPH048771Y2 (en) | 1992-03-05 |
Family
ID=30907872
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986068238U Expired JPH048771Y2 (en) | 1986-05-08 | 1986-05-08 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH048771Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008017729A (en) * | 2006-07-11 | 2008-01-31 | Mkv Platech Co Ltd | Coating material for preventing adhesion of incoming agrochemical |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6144840Y2 (en) * | 1980-11-19 | 1986-12-17 | ||
| JPS57111890U (en) * | 1980-12-27 | 1982-07-10 |
-
1986
- 1986-05-08 JP JP1986068238U patent/JPH048771Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62181142U (en) | 1987-11-17 |
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