JP4037994B2 - Agricultural plastic film - Google Patents

Agricultural plastic film Download PDF

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Publication number
JP4037994B2
JP4037994B2 JP16975699A JP16975699A JP4037994B2 JP 4037994 B2 JP4037994 B2 JP 4037994B2 JP 16975699 A JP16975699 A JP 16975699A JP 16975699 A JP16975699 A JP 16975699A JP 4037994 B2 JP4037994 B2 JP 4037994B2
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Prior art keywords
region
film
fine
fine unevenness
forming portion
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JP2000354429A5 (en
JP2000354429A (en
Inventor
明男 丸山
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Achilles Corp
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Achilles Corp
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A40/00Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
    • Y02A40/10Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
    • Y02A40/25Greenhouse technology, e.g. cooling systems therefor

Description

【0001】
【発明の属する技術分野】
本発明は、農業用被覆材として使用される合成樹脂製フィルムに関するものである。
【0002】
【従来の技術】
従来より、ハウスやトンネル等の農業施設の被覆材として、ポリ塩化ビニルやエチレン−塩化ビニル共重合樹脂等の塩化ビニル系樹脂、ポリエチレンやエチレン−酢酸ビニル共重合樹脂等のオレフィン系樹脂、ポリエステル系樹脂、フッ素系樹脂等の合成樹脂からなる透明フィルムが使用されている。
【0003】
【本発明が解決しようとする課題】
しかし、透明フィルムは、光の透過量が多いため、日差しの強い日には、植物の葉が焼けてしまうという問題が生じた。
そこで、この問題を解決するために、フィルムの全面に微細凹凸を形成させた梨地のフィルムが使用されているが、全面に微細凹凸が形成されているため、ハウスやトンネルの外側から中の植物の状態を知るためには、フィルムを毎回捲り上げて中を覗くしかなかった。
【0004】
また、梨地のフィルムに窓として微細凹凸を全く形成していない領域を設けたフィルムもあるが、全面に微細凹凸を形成した領域と、微細凹凸を全く形成していない領域とが隣接しており、全面に微細凹凸を形成した領域と、微細凹凸を全く形成していない領域の境界線がフィルムの長手方向に一直線に形成されているため、境界部分から破れやすいものであった。
【0005】
さらに、微細凹凸形成部分は、透明部分(微細凹凸非形成部分)よりも土壌中での劣化速度が速い。そのため、地面に埋められたり、触れたりする部分に微細凹凸形成部分が多く存在すると、フィルムが比較的早く劣化してしまうという問題が生じた。特に、フィルムの片方だけを捲り上げて換気を行う場合には、捲り上げる方の端部のみが、土壌から引っ張り上げられたり、土壌中に埋め戻されたりするため、劣化が速いという問題が生じた。
【0006】
【課題を解決するための手段】
上記の課題を解決するためになされた本発明は、合成樹脂製フィルムにおいて、該フィルムの長辺を構成する少なくとも一方の端部から、0.05〜0.4m幅の微細凹凸を全く形成していない領域、0.1〜0.8m幅の微細凹凸を部分的に形成した領域、微細凹凸を全面に形成した領域が順次形成してなり、前記微細凹凸を部分的に形成した領域における微細凹凸形成部の割合が、フィルム中央部からフィルム端部に向かって、漸次減少するように形成され、微細凹凸形成部と微細凹凸非形成部との境界線が一直線上に集中することがない農業用合成樹脂製フィルムである。
【0007】
また、上記合成樹脂製フィルムの長辺を構成する少なくとも一方の端部から、フィルム中央部に向かって、20cmの幅の領域αにおいて、微細凹凸形成部分の面積が、領域αの面積の3割以下であることが好ましい。
【0009】
透明フィルムを構成する合成樹脂としては、従来より農業用合成樹脂フィルムの素材として使用されているものであれば、いずれのものであっても使用可能である。
具体的には、塩化ビニルの単独重合体であるポリ塩化ビニル、エチレン−塩化ビニル共重合樹脂等の塩化ビニル系共重合樹脂、等の塩化ビニル系樹脂;ポリエチレン、エチレン−酢酸ビニル共重合樹脂等のエチレン系共重合樹脂、等のオレフィン系樹脂;ポリエチレンテレフタレート等のポリエステル系樹脂;フッ素系樹脂;等の合成樹脂が使用できる。
中でも、ポリ塩化ビニルは、加工性に優れるため、好ましい。
【0010】
上記の合成樹脂には、必要に応じて、可塑剤、安定剤、防滴剤、防霧剤、滑剤、粘着防止剤、紫外線吸収剤、光安定剤、酸化防止剤、無機充填剤、保温剤又は着色剤等の各種添加剤を添加しても良い。
【0011】
上記の合成樹脂及び必要に応じて添加される各種添加剤とからなる合成樹脂組成物は、カレンダー法、押出法、インフレーション法等の公知の手段で所望厚さのフィルムに成形される。
フィルムの厚さは、特に限定されるものではないが、一般的には、0.01〜0.3mm程度の範囲である。
また、フィルムの幅についても特に限定されるものではないが、1〜5m程度のものが一般的である。
【0012】
また、地面に接する可能性の高い部分、つまりフィルムの長辺を構成する端部からフィルムの中央に向かって20cmの幅の領域において、該領域の総面積中における微細凹凸形成部分の総面積の割合が3割以下であれば、好ましい。
土壌中において、微細凹凸形成部分の劣化速度は、微細凹凸非形成部分の劣化速度よりも速い。このため、本発明の農業用合成樹脂製フィルムは、フィルムの長辺を構成する少なくとも一方の端部に微細凹凸を全く形成していない領域を設けるが、両方の端部に微細凹凸を全く形成していない領域を形成するとより好ましい。
また、農業用ハウスに展張した場合に土壌に接したり、土壌中に埋められる部分、つまり、微細凹凸を全く形成しない領域を有するフィルムの端からフィルムの中央に向かって10cmの幅の部分においては、微細凹凸を形成しない領域とするのが好ましい。
【0013】
上記の微細凹凸は、例えば、梨地や絹目等のエンボス加工を施すことにより形成される。
【0014】
本発明の農業用合成樹脂製フィルムにおいては、フィルムの総面積に対し、微細凹凸形成部の面積が65〜90%を占めるのが好ましい。
【0015】
本発明の農業用フィルムは、微細凹凸を全く形成しない領域又は微細凹凸を部分的に形成する領域を設けることによって、農業用フィルムを展張した農業用ハウスの中の様子を外側から見ることができる。また、微細凹凸を全く形成しない領域と全面に微細凹凸を形成した領域の間に、微細凹凸を部分的に形成した領域を設けることによって、微細凹凸形成部分と微細凹凸非形成部分の境目からフィルムが破れるのを抑制している。
【0016】
全面に微細凹凸を形成した領域の幅及び微細凹凸を部分的に形成した領域の幅については、展張しようとする施設の大きさ、農業用合成樹脂製フィルム全体の幅等によっても異なり、一概には決められないが、一般的には、微細凹凸を全く形成しない領域の幅が0.05〜0.4m好ましくは0.05〜0.2m、微細凹凸を部分的に形成した領域の幅が0.1〜0.8m程度であり、好ましくは0.2〜0.5mである。また、微細凹凸非形成部が天頂付近に存在すると、そこから差し込む光によって、葉焼けが生じる場合があるため、あまり好ましくない。
そのため、微細凹凸を部分的に形成した領域においては、フィルム中央部からフィルム端部に向かって、微細凹凸形成部の割合が漸次減少するのが好ましい。
【0017】
また、微細凹凸を部分的に形成した領域内における微細凹凸形成部と微細凹凸非形成部との面積比率についても特に限定されるものではないが、20:80〜80:20、好ましくは、65:35〜35:65程度とされる。
【0018】
微細凹凸を部分的に形成した領域における微細凹凸形成部又は微細凹凸非形成部の形状は、縦、横、斜めのストライプ状、格子状、斜め格子状、水玉状等であってもよいが、本発明において特に好ましくは、微細凹凸を部分的に形成した領域内での微細凹凸形成部分の面積比率がフィルム端部に向かって、漸次減少するようになっているのが望ましい。
すなわち、土壌に接する可能性の高い部分ほど、微細凹凸非形成部である透明部の比率が高い方が好ましい。
【0019】
また、本発明の農業用合成樹脂製フィルムは、微細凹凸形成部と非形成部との境界が一直線上に集中するようなことがなく、引っ張り等の負荷がかかっても、この境界部分からの破れが生じにくい。
【0020】
上記した本発明の農業用合成樹脂製フィルムは、表面及び/又は裏面に、水系塗料、溶剤系塗料、紫外線硬化型塗料等からなる塗膜を形成したものであってもよい。
【0021】
【発明の実施の形態】
以下、図面に基づいて本発明の農業用合成樹脂製フィルムの具体例について説明する。
【0022】
図1に示す例は、厚さ0.1mm、幅1.8mとなるように、カレンダー法により形成された軟質ポリ塩化ビニルフィルムの両端部から中央部に向かって、微細凹凸が全く形成されていない領域A、部分的に微細凹凸が形成された領域B、全面に微細凹凸が形成された領域Cとが順次形成されるように、梨地エンボス加工による微細凹凸を形成したものである。
本例における領域Cの幅は1.4m、領域Bの幅はそれぞれ0.3m、領域Aの幅は0.1mである。
また、領域B中の微細凹凸形成部は、底辺が6cm、高さ0.3mの二等辺三角形モチーフが横方向に連続したような形状となっており、フィルムの長辺を構成する両端には、微細凹凸を全く形成しない領域Aが配置されている。本実施例では、フィルムの長辺を構成する端部からフィルム中央部に向かって20cmの幅の領域(以下、領域α)における微細凹凸形成部分の面積は約25%である。
【0023】
図2〜5に示す例は、図1の態様のバリエーションであり、図1に示す例と同様にして得られたものである。
【0024】
図2に示す例は、領域B中の微細凹凸形成部の形状を、底辺が3cm、高さが0.2mの二等辺三角形モチーフが横方向に連続したような形状としたものであり、フィルムの長辺を構成する両端には、微細凹凸を全く形成しない領域Aが15cmの幅で配置されている。本実施例において、領域α中の微細凹凸形成部分の割合は約13%である。
【0025】
図3に示す例は、領域B中の微細凹凸形成部の形状を、底部の幅が6cm、高さが0.2mの舌状モチーフが横方向に連続したような形状としたものであり、フィルムの長辺を構成する両端には、微細凹凸を全く形成しない領域Aが20cmの幅で配置されている。本実施例において、領域α中の微細凹凸形成部分の割合は約0%である。
【0026】
図4に示す例は、領域B中の微細凹凸形成部の形状を、図2に示す例における二等辺三角形の底辺以外の辺を内方に湾曲させた曲線で描いたモチーフが横方向に連続したような形状としたものであり、フィルムの長辺を構成する両端には、微細凹凸を全く形成していない領域Aが20cm幅で配置されている。本実施例において、領域α中の微細凹凸形成部分の割合は約0%である。
【0027】
図5に示す例は、領域bにおける微細凹凸形成部と非微細凹凸形成部の境界部分の形状を「Sinカーブ」状としたものであり、フィルムの長辺を構成する両端には、微細凹凸を全く形成しない領域Aが20cmの幅で配置されている。本実施例において、領域α中の微細凹凸形成部分の割合は約0%である。
【0028】
更に、図示はしないが、本発明の農業用合成樹脂製フィルムは、微細凹凸を部分的に形成した領域(領域B)内における微細凹凸形状部又は微細凹凸非形成部の形状が、縦、横、斜めのストライプ状、格子状、斜め格子状、水玉状等としたものであっても良い。
ただし、本発明において好ましくは、図1〜図5に示すような、領域B内の微細凹凸形成部の面積比率がフィルム端部に向かって漸次減少するようにしたものである。
【0029】
以上の例は、いずれも全体の幅が1.8mの農業用合成樹脂製フィルムの例を示したが、本発明における農業用合成樹脂製フィルムの全体の幅は、これに限定されるものでないことは言うまでもない。
また、各領域の幅は、農業用合成樹脂製フィルム全体の幅、使用する農業用施設の大きさ、等により、任意に変更することが可能である。
【0030】
【発明の効果】
以上の構成からなる本発明の農業用合成樹脂製フィルムは、フィルムの端部を捲り上げなくとも、内部の様子を知ることができ、土壌に接する又は土壌に埋められることによるフィルムの劣化速度もも全体に梨地を施したフィルムよりも遅いものである。
従って、農家の作業の軽減化を図ると共に、全体に梨地を施したフィルムよりも長期間展張可能である。
【0031】
また、本発明の農業用合成樹脂製フィルムは、微細凹凸形成部と非形成部との境界部分が、従来のように一直線上に集中していないので、引張り等の負荷がかかっても、この境界部分で破れるようなことが生じにくい。
【図面の簡単な説明】
【図1】本発明の一実施例を示す平面図である。
【図2】本発明の一実施例を示す平面図である。
【図3】本発明の一実施例を示す平面図である。
【図4】本発明の一実施例を示す平面図である。
【図5】本発明の一実施例を示す平面図である。
【図6】微細凹凸を全面に形成した領域と、微細凹凸を全く形成していない領域を一直線に形成した従来例を示す平面図である。
【符号の説明】
A・・・微細凹凸を全く形成しない領域
B・・・微細凹凸を部分的に形成した領域
C・・・微細凹凸を全面に形成した領域
1・・・農業用合成樹脂製フィルム
11・・・微細凹凸非形成部(透明部)
12・・・微細凹凸形成部
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a synthetic resin film used as an agricultural covering material.
[0002]
[Prior art]
Conventionally, as a covering material for agricultural facilities such as houses and tunnels, vinyl chloride resins such as polyvinyl chloride and ethylene-vinyl chloride copolymer resins, olefin resins such as polyethylene and ethylene-vinyl acetate copolymer resins, polyester-based resins Transparent films made of synthetic resins such as resins and fluorine resins are used.
[0003]
[Problems to be solved by the present invention]
However, since the transparent film has a large amount of light transmission, there has been a problem that the leaves of the plant are burned on a day with strong sunlight.
Therefore, in order to solve this problem, a satin film with fine irregularities formed on the entire surface of the film is used, but since the fine irregularities are formed on the entire surface, plants inside the house or tunnel from the outside The only way to know the condition was to roll up the film every time and look inside.
[0004]
In addition, there are films that have areas with no fine irregularities formed as windows on the satin film, but the areas with fine irregularities on the entire surface are adjacent to the areas with no fine irregularities. Since the boundary line between the region where the fine irregularities are formed on the entire surface and the region where no fine irregularities are formed is formed in a straight line in the longitudinal direction of the film, the boundary portion is easily broken.
[0005]
Furthermore, the fine unevenness forming portion has a faster deterioration rate in the soil than the transparent portion (the fine unevenness non-forming portion). For this reason, when there are many fine irregularities formed in a portion that is buried or touched on the ground, there has been a problem that the film deteriorates relatively quickly. In particular, when only one side of the film is lifted to ventilate, only the end of the rising side is pulled up from the soil or backfilled in the soil, resulting in a problem of rapid deterioration. It was.
[0006]
[Means for Solving the Problems]
The present invention made in order to solve the above-mentioned problems is a synthetic resin film, in which fine irregularities having a width of 0.05 to 0.4 m are completely formed from at least one end constituting the long side of the film. A region in which fine irregularities having a width of 0.1 to 0.8 m are partially formed, and a region in which fine irregularities are formed on the entire surface are sequentially formed. Agriculture in which the proportion of the irregularities is formed so that the ratio of the irregularities gradually decreases from the center of the film toward the edge of the film, and the boundary line between the irregularities and fine irregularities is not concentrated on a straight line. It is a synthetic resin film.
[0007]
Further, in the region α having a width of 20 cm from at least one end constituting the long side of the synthetic resin film toward the center of the film, the area of the fine unevenness forming portion is 30% of the area of the region α. The following is preferable.
[0009]
As the synthetic resin constituting the transparent film, any resin can be used as long as it is conventionally used as a raw material for agricultural synthetic resin films.
Specifically, vinyl chloride homopolymers such as polyvinyl chloride, vinyl chloride copolymer resins such as ethylene-vinyl chloride copolymer resins, vinyl chloride resins such as polyethylene, ethylene-vinyl acetate copolymer resins, etc. Synthetic resins such as olefin resins such as ethylene copolymer resins, polyester resins such as polyethylene terephthalate, fluorine resins, and the like can be used.
Among these, polyvinyl chloride is preferable because of its excellent processability.
[0010]
For the above synthetic resins, plasticizers, stabilizers, drip-proofing agents, anti-fogging agents, lubricants, anti-adhesive agents, ultraviolet absorbers, light stabilizers, antioxidants, inorganic fillers, and heat retention agents as necessary Alternatively, various additives such as a colorant may be added.
[0011]
A synthetic resin composition comprising the above synthetic resin and various additives added as necessary is formed into a film having a desired thickness by a known means such as a calendering method, an extrusion method, or an inflation method.
The thickness of the film is not particularly limited, but is generally in the range of about 0.01 to 0.3 mm.
Also, the width of the film is not particularly limited, but is generally about 1 to 5 m.
[0012]
Further, in a portion having a high possibility of coming into contact with the ground, that is, in a region having a width of 20 cm from the end constituting the long side of the film toward the center of the film, the total area of the fine unevenness forming portion in the total area of the region A ratio of 30% or less is preferable.
In soil, the deterioration rate of the fine unevenness forming portion is faster than the deterioration rate of the fine unevenness non-forming portion. For this reason, the synthetic resin film for agricultural use of the present invention provides a region where no fine irregularities are formed at least on one end constituting the long side of the film, but no fine irregularities are formed on both ends. It is more preferable to form a region that is not formed.
In addition, in a portion that is in contact with the soil when spread in an agricultural house or buried in the soil, that is, in a portion having a width of 10 cm from the end of the film having a region that does not form any fine irregularities toward the center of the film. It is preferable that the region does not form fine irregularities.
[0013]
Said fine unevenness | corrugation is formed, for example by giving embossing, such as a satin and a silk.
[0014]
In the agricultural synthetic resin film of the present invention, it is preferable that the area of the fine unevenness occupies 65 to 90% of the total area of the film.
[0015]
The agricultural film of this invention can see the state in the agricultural house which extended the agricultural film from the outside by providing the area | region which does not form fine unevenness at all, or the area | region which forms fine unevenness partially. . In addition, by providing a region in which fine irregularities are partially formed between a region in which fine irregularities are not formed at all and a region in which fine irregularities are formed on the entire surface, a film is formed from the boundary between the fine irregularity forming portion and the fine irregularity non-forming portion. Is suppressed from breaking.
[0016]
The width of the area where the fine irregularities are formed on the entire surface and the width of the area where the fine irregularities are partially formed vary depending on the size of the facility to be expanded, the width of the entire agricultural synthetic resin film, etc. However, in general, the width of a region where no fine irregularities are formed is 0.05 to 0.4 m, preferably 0.05 to 0.2 m, and the width of a region where fine irregularities are partially formed is It is about 0.1 to 0.8 m, preferably 0.2 to 0.5 m. In addition, it is not preferable that the fine unevenness non-formation portion exists in the vicinity of the zenith, because the burnt light may be caused by the light inserted therefrom.
Therefore, in the region where the fine unevenness is partially formed, it is preferable that the ratio of the fine unevenness forming portion gradually decreases from the center of the film toward the end of the film.
[0017]
Further, the area ratio between the fine unevenness forming portion and the fine unevenness non-forming portion in the region where the fine unevenness is partially formed is not particularly limited, but is 20:80 to 80:20, preferably 65. : About 35 to 35:65.
[0018]
The shape of the fine unevenness forming part or the fine unevenness non-forming part in the region where the fine unevenness is partially formed may be vertical, horizontal, diagonal stripes, grids, diagonal grids, polka dots, etc. In the present invention, it is particularly preferable that the area ratio of the fine unevenness forming portion in the region where the fine unevenness is partially formed gradually decreases toward the end of the film.
That is, it is preferable that the portion having a high possibility of being in contact with the soil has a higher ratio of the transparent portion that is the fine unevenness non-forming portion.
[0019]
In addition, the agricultural synthetic resin film of the present invention is such that the boundary between the fine unevenness forming portion and the non-forming portion is not concentrated on a straight line, and even if a load such as tension is applied, the boundary It is hard to break.
[0020]
The agricultural synthetic resin film of the present invention described above may be a film formed of a water-based paint, a solvent-based paint, an ultraviolet curable paint, or the like on the front surface and / or the back surface.
[0021]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, specific examples of the agricultural synthetic resin film of the present invention will be described with reference to the drawings.
[0022]
In the example shown in FIG. 1, fine irregularities are completely formed from both ends of the soft polyvinyl chloride film formed by the calendar method toward the center so that the thickness is 0.1 mm and the width is 1.8 m. The fine unevenness is formed by matte embossing so that the non-existing region A, the region B where the fine unevenness is partially formed, and the region C where the fine unevenness is formed on the entire surface are sequentially formed.
In this example, the width of the region C is 1.4 m, the width of the region B is 0.3 m, and the width of the region A is 0.1 m.
In addition, the fine unevenness forming part in the region B has a shape in which an isosceles triangle motif having a base of 6 cm and a height of 0.3 m is continuous in the horizontal direction, and at both ends constituting the long side of the film A region A where no fine irregularities are formed is disposed. In the present example, the area of the fine unevenness forming portion in the region having a width of 20 cm (hereinafter referred to as region α) from the end constituting the long side of the film toward the center of the film is about 25%.
[0023]
The example shown in FIGS. 2 to 5 is a variation of the embodiment of FIG. 1 and is obtained in the same manner as the example shown in FIG.
[0024]
In the example shown in FIG. 2, the shape of the fine unevenness portion in the region B is such that an isosceles triangular motif having a base of 3 cm and a height of 0.2 m is continuous in the horizontal direction. At both ends constituting the long side, a region A where no fine irregularities are formed is arranged with a width of 15 cm. In the present embodiment, the proportion of the fine unevenness forming portion in the region α is about 13%.
[0025]
In the example shown in FIG. 3, the shape of the fine unevenness forming portion in the region B is such that a tongue-like motif having a bottom width of 6 cm and a height of 0.2 m is continuous in the lateral direction. At both ends constituting the long side of the film, a region A where no fine irregularities are formed is arranged with a width of 20 cm. In the present embodiment, the proportion of the fine unevenness forming portion in the region α is about 0%.
[0026]
In the example shown in FIG. 4, a motif in which the shape of the fine unevenness forming portion in the region B is drawn in a curve in which the sides other than the base of the isosceles triangle in the example shown in FIG. A region A in which no fine irregularities are formed is arranged with a width of 20 cm at both ends constituting the long side of the film. In the present embodiment, the proportion of the fine unevenness forming portion in the region α is about 0%.
[0027]
In the example shown in FIG. 5, the shape of the boundary portion between the fine unevenness forming portion and the non-fine unevenness forming portion in the region b is a “Sin curve” shape, and the fine unevenness is formed at both ends constituting the long side of the film. A region A in which no is formed is arranged with a width of 20 cm. In the present embodiment, the proportion of the fine unevenness forming portion in the region α is about 0%.
[0028]
Further, although not shown in the drawings, the agricultural synthetic resin film of the present invention has a vertical and horizontal shape of the fine unevenness portion or the fine unevenness non-formation portion in the region (region B) where the fine unevenness is partially formed. In addition, an oblique stripe shape, a lattice shape, an oblique lattice shape, a polka dot shape, or the like may be used.
However, in the present invention, preferably, the area ratio of the fine irregularities forming portion in the region B as shown in FIGS. 1 to 5 gradually decreases toward the film end.
[0029]
Although the above example showed the example of the synthetic resin film for agriculture whose whole width | variety is 1.8 m, the whole width | variety of the synthetic resin film for agriculture in this invention is not limited to this. Needless to say.
The width of each region can be arbitrarily changed depending on the width of the entire agricultural synthetic resin film, the size of the agricultural facility to be used, and the like.
[0030]
【The invention's effect】
The agricultural synthetic resin film of the present invention having the above-described configuration can know the state of the inside without raising the end of the film, and the deterioration rate of the film due to being in contact with the soil or being buried in the soil is also obtained. It is slower than a film with a satin finish.
Accordingly, the work of the farmer can be reduced and the film can be extended for a longer period than a film with a satin finish.
[0031]
In addition, the agricultural synthetic resin film of the present invention has a boundary portion between the fine unevenness forming portion and the non-forming portion that is not concentrated on a straight line as in the prior art. It is difficult to break at the boundary.
[Brief description of the drawings]
FIG. 1 is a plan view showing an embodiment of the present invention.
FIG. 2 is a plan view showing an embodiment of the present invention.
FIG. 3 is a plan view showing an embodiment of the present invention.
FIG. 4 is a plan view showing an embodiment of the present invention.
FIG. 5 is a plan view showing an embodiment of the present invention.
FIG. 6 is a plan view showing a conventional example in which a region where fine irregularities are formed on the entire surface and a region where no fine irregularities are formed are formed in a straight line.
[Explanation of symbols]
A ... A region where no fine irregularities are formed B ... A region where fine irregularities are partially formed C ... A region where fine irregularities are formed over the entire surface 1 ... Agricultural synthetic resin film 11 ... Fine irregularities non-formed part (transparent part)
12 ... Micro unevenness forming part

Claims (2)

合成樹脂製フィルムにおいて、該フィルムの長辺を構成する少なくとも一方の端部から、0.05〜0.4m幅の微細凹凸を全く形成していない領域、0.1〜0.8m幅の微細凹凸を部分的に形成した領域、微細凹凸を全面に形成した領域が順次形成してなり、前記微細凹凸を部分的に形成した領域における微細凹凸形成部の割合が、フィルム中央部からフィルム端部に向かって、漸次減少するように形成され、微細凹凸形成部と微細凹凸非形成部との境界線が一直線上に集中することがないことを特徴とする農業用合成樹脂製フィルム。In the synthetic resin film, a region in which fine irregularities of 0.05 to 0.4 m width are not formed at least from one end constituting the long side of the film, 0.1 to 0.8 m width fine A region where the unevenness is partially formed and a region where the fine unevenness is formed over the entire surface are sequentially formed, and the ratio of the fine unevenness forming portion in the region where the fine unevenness is partially formed is from the center of the film to the end of the film A film made of synthetic resin for agriculture , characterized in that the boundary line between the fine unevenness forming portion and the fine unevenness non-forming portion does not concentrate on a straight line. 合成樹脂製フィルムの長辺を構成する少なくとも一方の端部から、フィルム中央部に向かって、20cmの幅の領域αにおいて、微細凹凸形成部分の面積が、領域αの面積の3割以下であることを特徴とする請求項1に記載の農業用合成樹脂製フィルム。From at least one end constituting the long side of the synthetic resin film toward the center of the film, in the region α having a width of 20 cm, the area of the fine unevenness forming portion is 30% or less of the area of the region α. The agricultural synthetic resin film according to claim 1 .
JP16975699A 1999-06-16 1999-06-16 Agricultural plastic film Expired - Lifetime JP4037994B2 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8371419B2 (en) 2008-04-22 2013-02-12 3M Innovative Properties Company Hybrid sound absorbing sheet
US8469145B2 (en) 2008-04-14 2013-06-25 3M Innovative Properties Company Multilayer sound absorbing sheet
US8573358B2 (en) 2008-05-22 2013-11-05 3M Innovative Properties Company Multilayer sound absorbing structure comprising mesh layer

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8469145B2 (en) 2008-04-14 2013-06-25 3M Innovative Properties Company Multilayer sound absorbing sheet
US8371419B2 (en) 2008-04-22 2013-02-12 3M Innovative Properties Company Hybrid sound absorbing sheet
US8573358B2 (en) 2008-05-22 2013-11-05 3M Innovative Properties Company Multilayer sound absorbing structure comprising mesh layer

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