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JP3759433B2 - Agricultural film - Google Patents
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JP3759433B2 - Agricultural film - Google Patents

Agricultural film Download PDF

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Publication number
JP3759433B2
JP3759433B2 JP2001207001A JP2001207001A JP3759433B2 JP 3759433 B2 JP3759433 B2 JP 3759433B2 JP 2001207001 A JP2001207001 A JP 2001207001A JP 2001207001 A JP2001207001 A JP 2001207001A JP 3759433 B2 JP3759433 B2 JP 3759433B2
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Japan
Prior art keywords
film
band
width
welded portion
agricultural
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Expired - Fee Related
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JP2001207001A
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Japanese (ja)
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JP2003018925A (en
Inventor
津留一 中澤
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株式会社クレイン熱機
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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

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  • Greenhouses (AREA)

Description

【0001】
【発明の属する技術分野】
本発明は、農業用フィルムに関し、詳しくは、ブドウ棚や梨棚の上面を覆うトンネル用フィルムの固定作業が極めて容易になる農業用フィルムに関する。
【0002】
【従来の技術】
従来、ブドウ棚や梨棚の上面を覆うトンネル用フィルムの固定手段としては、図5に示すような手法が採用されていた。即ち、長尺状のフィルム100の両端に、フィルム長手方向に沿った両端縁に細幅の補強帯101を設け、その補強帯101の部位に、一定間隔で鳩目102加工を施し、紐孔103を形成する。鳩目の大きさは直径10mm程度で、紐孔の直径は5mm程度である。その紐孔103に黒色バンド104(黒色が主流であるが黒色以外もある)を取り付け、その黒色バンド104を棚の部材(図示せず)に結んで、トンネル用フィルムを固定していた。
【0003】
しかし、かかる手法では、鳩目加工における鳩目材が必要となり、その鳩目加工の作業が煩雑であり、その材料コストと作業コストがかかる問題がある。それに加えて紐孔103に黒色バンド104を結束する作業も非常に煩雑であり、農家にとって大変な手間となる。
【0004】
またフィルム展張後、時間の経過と共に、強風の影響などで、黒色バンドを取り付けた鳩目部分の周囲が破け、鳩目自体が脱落してしまう問題があった。これは鳩目シールでの小さいシール部(シール長さまたは断面)に応力が集中するためであり、この対策として、長手方向の取り付け間隔を小さくして、鳩目1個あたりの負荷を小さくすることも考えられるが、黒色のバンドの取り付け間隔を小さくすると、上記の材料コストや作業手間がアップするだけでなく、栽培作物であるブドウや梨などに対する太陽光を遮光し、生育を阻害する問題があった。
【0005】
さらに廃プラ処理の際に、黒色バンドとトンネル用フィルムは材質が異なるため、分別処理をしなければならなかった。
【0006】
【発明が解決しようとする課題】
そこで、本発明は、材料コストや作業コストが少なく、また栽培作物であるブドウや梨などの生育を阻害することなくトンネル用フィルムを確実に固定でき、さらに廃プラ処理の際に分別処理を不要にする農業用フィルムを提供することを課題とする。
【0007】
【課題を解決するための手段】
上記課題を解決する請求項1に記載の発明は、長尺状のポリオレフィン系フィルムのフィルム長手方向に沿った両端縁に細幅の補強帯を有し、該補強帯に幅20mm以上100mm以下で長さ20cm以上50cm以下の長方形状の結束用のフィルムバンドの一端を、前記補強帯に沿って50〜70cm間隔で前記フィルムバンドに直交する溶着部を形成し、前記溶着部の領域の両側に非溶着部を形成することを特徴とする農業用フィルムである。
【0009】
請求項に記載の発明は、前記非溶着部の幅が、1〜5mmであることを特徴とする請求項記載の農業用フィルムである。
【0010】
請求項に記載の発明は、補強帯が、長尺状のポリオレフィン系フィルムの両端縁を折り曲げ、該折り曲げ幅の内部に酢酸ビニル系樹脂テープを挿入してなることを特徴とする請求項1又は2記載の農業用フィルムである。
【0011】
請求項に記載の発明は、フィルムバンドが、幅40mm以上70mm未満のポリオレフィン系延伸フィルムであり、溶着部の幅が30mm以上60mm未満であることを特徴とする請求項1、2又は3記載の農業用フィルムである。
【0012】
請求項に記載の発明は、溶着部が、高周波シール方式による熱溶着によって形成されることを特徴とする請求項1、2、3又は4記載の農業用フィルムである。
【0013】
【発明の実施の形態】
以下、本発明の実施の形態について説明する。
【0014】
図1には、本発明の農業用フィルムの一例が示されている。即ち、1は長尺状のポリオレフィン系フィルムであり、該フィルム1の長手方向(図面上左右方向)に沿った両端縁に細幅の補強帯2,2が形成されている。
【0015】
ポリオレフィン系フィルムに用いられるポリオレフィン樹脂としては、低密度ポリエチレン、高密度ポリエチレン、直鎖状低密度ポリエチレン、エチレン−酢酸ビニル共重合体、エチレン−アクリル酸共重合体等の樹脂が挙げられる。
【0016】
ポリオレフィン系フィルムは、ポリオレフィンの単層フィルムであっても、積層フィルムであってもよい。
【0017】
フィルムの厚みは、トンネル用フィルムとしての耐久性等を考慮して、30〜100μの範囲が好ましく、40〜70μの範囲がより好ましい。
【0018】
補強帯2は、長尺状のポリオレフィン系フィルムの両端縁を折り曲げて形成することができる。折り曲げ幅は30〜50mmの範囲が好ましい。
【0019】
補強帯2は、図2に示すように、長尺状のポリオレフィン系フィルムの両端縁を折り曲げ、該折り曲げ幅の内部に酢酸ビニル系樹脂などの素材で形成された補強テープ20を挿入することが、フィルムバンドの溶着の便宜性や溶着後の強度維持効果を増す上で好ましい。
【0020】
図1において、3はフィルムバンドであり、該フィルムバンド3の一端は補強帯2の部位に溶着して固定されている。4は溶着部である。該フィルムバンド3の幅L1 は20mm以上100mm以下であればよく、長さL2は20cm以上50cm以下であればよい。複数のフィルムバンドのそれぞれの幅と長さは多少異なってもよい。
【0021】
フィルムバンド3と隣接するフィルムバンド3との間隔L3は50〜70cmであればよく、等間隔でもよいし、多少異なってもよい。
【0022】
フィルムバンド3は、幅L1 が40mm以上70mm未満であるポリオレフィン系延伸フィルムであることがより好ましく、さらに長尺方向に延伸処理が施されたポリオレフィン系多層フィルムが好ましい。例えば2層構成のフィルムの場合、第1の層は、密度が0.930g/cm3以下の直鎖状低密度ポリエチレン、高圧法低密度ポリエチレン、またはその混合物を主成分とする層が挙げられる。第2の層はポリプロピレン(エチレン含有量10%以下)、又は高密度ポリエチレンなどを主体とする層である。
【0023】
本発明においては、前記溶着部4の領域(図面で斜線で示されている部位)の両側に前記フィルムバンド3の非溶着部5を有することが好ましい。図面では溶着部4の領域の周囲に非溶着部5を形成した例が示されているが、限定されるわけではない。
【0024】
かかる非溶着部5を形成することによって、使用時にフィルムバンド3が補強帯2から脱離ないし剥離するのを防止できる。
【0025】
図1に示すように、バンド全幅をシールすると、シール幅L1の両端A部はバンドとしては薄くなり、キズとなるため所謂ノッチ効果(ノッチ効果は外部両端A部で大きく、内部Bでは小さい。)となり、強度が低下する。
【0026】
また延伸したバンドでは熱によりバンドの延伸効果がA部極所で低下することによるノッチ効果もあると思われる。
【0027】
溶着部と非溶着部の領域の関係を図3に基づいて説明する。溶着部4の長さa1、 非溶着部5の長さa2とすると、a1 は30〜60mmの範囲、a2は1〜5mmの範囲が強度や紐としての結束性の点で好ましい。
【0028】
溶着部4の幅bは7〜15mmの範囲が好ましく、また幅方向のシール強度をバンドを結束する反対側で強くすると、上記ノッチ効果を柔らげるので好ましい。
【0029】
本発明において、溶着部4は高周波シール方式による熱溶着によって形成することが作業性の向上を図る上で好ましい。
【0030】
図4には、本発明の農業用フィルムの使用状態が示されており、ブドウ棚10等の上にトンネル用フィルム1が展張され、その両側がフィルムバンド3で固定されている。
【0031】
【発明の効果】
本発明によれば、幅20mm以上100mm以下で長さ20cm以上50cm以下のフィルムバンドを補強帯に沿って50〜70cm間隔で溶着して溶着部を形成するにより、材料コストや作業コストが少なく、また栽培作物であるブドウや梨などの生育を阻害することなくトンネル用フィルムを確実に固定できる。
【0032】
また前記溶着部の領域の両側に前記フィルムバンドの非溶着部を形成することにより、上記ノッチ効果を柔らげる効果がある。
【0033】
更に非溶着部の幅が、1〜5mmであることにより、ノッチ効果を回避でき、また紐としての結束作業性を向上させる効果がある。
【0034】
補強帯が、長尺状のポリオレフィン系フィルムの両端縁を折り曲げ、該折り曲げ幅の内部に酢酸ビニル系樹脂テープを挿入してなることにより、以下の効果がある。即ち、一般にフィルム端部にはキズがある。従って、ここから破れるノッチ効果がある。この対策には折り込み、即ちキズを端に出さないのがよい。
【0035】
フィルムバンドが、幅40mm以上70mm未満のポリオレフィン系延伸フィルムであり、溶着部の幅が30mm以上60mm未満であることにより、材料コストや作業コストが少なく、また栽培作物であるブドウや梨などの生育を阻害することなくトンネル用フィルムを確実に固定できるのみならず、廃プラ処理の際に分別処理を不要にする。
【0036】
溶着部が、高周波シール方式による熱溶着によって形成されることにより、シール形状やシール強度のコントロールがし易いという効果がある。
【図面の簡単な説明】
【図1】本発明のフィルムの一例を示す要部説明図
【図2】補強帯の部位を示す断面図
【図3】溶着部と非溶着部の関係を示す図
【図4】本発明のフィルムの使用状態を示す要部斜視図
【図5】従来例を示す要部説明図
【符号の説明】
1:フィルム
2:補強帯
20:補強テープ
3:フィルムバンド
4:溶着部
5:非溶着部
10:ブドウ棚
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an agricultural film, and more particularly to an agricultural film that makes it extremely easy to fix a tunnel film that covers the upper surface of a grape shelf or pear shelf.
[0002]
[Prior art]
Conventionally, a technique as shown in FIG. 5 has been adopted as a means for fixing a tunnel film that covers the upper surface of a grape shelf or pear shelf. That is, narrow reinforcing bands 101 are provided at both ends of the long film 100 along the longitudinal direction of the film, and eyelets 102 are processed at regular intervals on the portions of the reinforcing band 101 to form string holes 103. Form. The size of the eyelet is about 10 mm in diameter, and the diameter of the string hole is about 5 mm. A black band 104 (black is the mainstream but other than black) is attached to the string hole 103, and the black band 104 is tied to a shelf member (not shown) to fix the tunnel film.
[0003]
However, this method requires eyelet material in eyelet processing, and the eyelet processing work is complicated, and there is a problem that the material cost and work cost are high. In addition, the work of binding the black band 104 to the string hole 103 is also very complicated, which is a great labor for the farmer.
[0004]
In addition, there was a problem that after the film was spread, the surroundings of the eyelet portion to which the black band was attached were torn due to the influence of strong winds as time passed, and the eyelet itself dropped out. This is because stress concentrates on the small seal part (seal length or cross section) of the eyelet seal, and as a countermeasure against this, it is possible to reduce the load per eyelet by reducing the longitudinal mounting interval. Although it is conceivable, reducing the mounting distance of the black band not only increases the material cost and labor described above, but also has the problem of blocking the sun light from growing crops such as grapes and pears and hindering growth. It was.
[0005]
Furthermore, when the waste plastic was processed, the black band and the tunnel film were made of different materials, and therefore had to be separated.
[0006]
[Problems to be solved by the invention]
Therefore, the present invention is low in material cost and work cost, can securely fix the tunnel film without hindering the growth of cultivated crops such as grapes and pears, and further eliminates the need for separation processing in waste plastic processing It is an object to provide an agricultural film.
[0007]
[Means for Solving the Problems]
Invention of Claim 1 which solves the said subject has a narrow reinforcement band in the both ends along the film longitudinal direction of a long polyolefin-type film, and is 20 mm or more and 100 mm or less in width in this reinforcement band One end of a rectangular binding film band having a length of 20 cm or more and 50 cm or less is formed with welded portions orthogonal to the film band at intervals of 50 to 70 cm along the reinforcing band, on both sides of the region of the welded portion. An agricultural film characterized by forming a non-welded portion .
[0009]
The invention according to claim 2, wherein the width of the non-weld portion, an agricultural film according to claim 1, characterized in that it is a 1 to 5 mm.
[0010]
The invention according to claim 3, claim reinforcing band, folding both edges of the elongated polyolefin film, characterized by comprising inserting the folded internal vinyl acetate resin tape width 1 Or it is an agricultural film of 2 description.
[0011]
Invention of Claim 4 is a polyolefin-type stretched film whose film band is 40 mm or more and less than 70 mm, and the width | variety of a welding part is 30 mm or more and less than 60 mm, The claim 1, 2, or 3 characterized by the above-mentioned. Agricultural film.
[0012]
The invention according to claim 5 is the agricultural film according to claim 1, 2, 3 or 4 , wherein the welded portion is formed by heat welding by a high frequency sealing method.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below.
[0014]
FIG. 1 shows an example of an agricultural film of the present invention. That is, reference numeral 1 denotes a long polyolefin-based film, and narrow reinforcing bands 2 and 2 are formed at both end edges along the longitudinal direction (left and right direction in the drawing) of the film 1.
[0015]
Examples of the polyolefin resin used for the polyolefin film include resins such as low density polyethylene, high density polyethylene, linear low density polyethylene, ethylene-vinyl acetate copolymer, and ethylene-acrylic acid copolymer.
[0016]
The polyolefin film may be a single layer film of polyolefin or a laminated film.
[0017]
The thickness of the film is preferably in the range of 30 to 100 μm and more preferably in the range of 40 to 70 μm in consideration of durability as a tunnel film.
[0018]
The reinforcing band 2 can be formed by bending both end edges of a long polyolefin film. The bending width is preferably in the range of 30 to 50 mm.
[0019]
As shown in FIG. 2, the reinforcing band 2 can be formed by bending both ends of a long polyolefin film and inserting a reinforcing tape 20 made of a material such as a vinyl acetate resin into the bent width. It is preferable in terms of increasing the convenience of film band welding and the effect of maintaining strength after welding.
[0020]
In FIG. 1, reference numeral 3 denotes a film band, and one end of the film band 3 is welded and fixed to a portion of the reinforcing band 2. 4 is a welding part. The width L 1 of the film band 3 may be 20 mm or more and 100 mm or less, and the length L 2 may be 20 cm or more and 50 cm or less. The width and length of each of the plurality of film bands may be slightly different.
[0021]
The distance L 3 between the film band 3 and the adjacent film band 3 may be 50 to 70 cm, may be equal, or may be slightly different.
[0022]
The film band 3 is more preferably a polyolefin-based stretched film having a width L 1 of 40 mm or more and less than 70 mm, and a polyolefin-based multilayer film that has been further stretched in the longitudinal direction is preferred. For example, in the case of a film having a two-layer structure, examples of the first layer include a layer mainly composed of a linear low density polyethylene having a density of 0.930 g / cm 3 or less, a high pressure method low density polyethylene, or a mixture thereof. . The second layer is a layer mainly composed of polypropylene (ethylene content of 10% or less) or high-density polyethylene.
[0023]
In the present invention, it is preferable to have the non-welded portion 5 of the film band 3 on both sides of the region of the welded portion 4 (portion indicated by hatching in the drawing). In the drawing, an example in which the non-welded portion 5 is formed around the region of the welded portion 4 is shown, but it is not limited.
[0024]
By forming the non-welded portion 5, it is possible to prevent the film band 3 from being detached or peeled from the reinforcing band 2 during use.
[0025]
As shown in FIG. 1, when the entire band width is sealed, both ends A of the seal width L 1 become thin as a band and become scratched, so the so-called notch effect (the notch effect is large at the outer ends A and small at the inner B). ) And the strength decreases.
[0026]
In addition, it seems that the stretched band also has a notch effect due to the fact that the stretching effect of the band is reduced at the A part pole by heat.
[0027]
The relationship between the area | region of a welding part and a non-welding part is demonstrated based on FIG. The length a1 of the weld 4; When the length a2 of the non-welded portion 5 is assumed, a1 Is preferably in the range of 30 to 60 mm, and a2 is preferably in the range of 1 to 5 mm from the viewpoint of strength and binding properties as a string.
[0028]
The width b of the welded portion 4 is preferably in the range of 7 to 15 mm, and it is preferable to increase the sealing strength in the width direction on the opposite side where the band is bound, because the notch effect is softened.
[0029]
In the present invention, the welded portion 4 is preferably formed by thermal welding using a high frequency sealing method in order to improve workability.
[0030]
FIG. 4 shows the state of use of the agricultural film of the present invention. The tunnel film 1 is stretched on the grape shelf 10 and the like, and both sides thereof are fixed by the film band 3.
[0031]
【The invention's effect】
According to the present invention, a film band having a width of 20 mm or more and 100 mm or less and a length of 20 cm or more and 50 cm or less is welded at intervals of 50 to 70 cm along the reinforcing band to form a welded portion. In addition, the tunnel film can be securely fixed without inhibiting the growth of cultivated crops such as grapes and pears.
[0032]
Further, by forming non-welded portions of the film band on both sides of the welded portion region, there is an effect of softening the notch effect.
[0033]
Furthermore, when the width of the non-welded portion is 1 to 5 mm, the notch effect can be avoided and the bundling workability as a string can be improved.
[0034]
When the reinforcing band is formed by bending both end edges of the long polyolefin film and inserting a vinyl acetate resin tape inside the bent width, the following effects are obtained. That is, there is generally a scratch at the film edge. Therefore, there is a notch effect that breaks from here. For this measure, it is better not to fold, that is, to bring out scratches.
[0035]
The film band is a polyolefin-based stretched film having a width of 40 mm or more and less than 70 mm, and the width of the welded portion is 30 mm or more and less than 60 mm, so that the material cost and work cost are low, and the growing crops such as grapes and pears Not only can the tunnel film be securely fixed without hindering, but also the separation process becomes unnecessary during the waste plastic treatment.
[0036]
By forming the welded portion by thermal welding using a high-frequency sealing method, there is an effect that it is easy to control the seal shape and the seal strength.
[Brief description of the drawings]
FIG. 1 is an explanatory view of an essential part showing an example of a film of the present invention. FIG. 2 is a sectional view showing a portion of a reinforcing band. FIG. 3 is a diagram showing a relationship between a welded part and a non-welded part. Fig. 5 is a perspective view of the main part showing the state of use of the film. Fig. 5 is an explanatory diagram of the main part showing a conventional example.
1: Film 2: Reinforcement band 20: Reinforcement tape 3: Film band 4: Welding part 5: Non-welding part 10: Grape shelf

Claims (5)

長尺状のポリオレフィン系フィルムのフィルム長手方向に沿った両端縁に細幅の補強帯を有し、該補強帯に幅20mm以上100mm以下で長さ20cm以上50cm以下の長方形状の結束用のフィルムバンドの一端を、前記補強帯に沿って50〜70cm間隔で前記フィルムバンドに直交する溶着部を形成し、前記溶着部の領域の両側に非溶着部を形成することを特徴とする農業用フィルム。A rectangular binding film having a narrow reinforcing band at both edges along the film longitudinal direction of a long polyolefin film, and having a width of 20 mm to 100 mm and a length of 20 cm to 50 cm. Agricultural film characterized in that one end of a band is formed with welded portions orthogonal to the film band at intervals of 50 to 70 cm along the reinforcing band, and non-welded portions are formed on both sides of the region of the welded portion. . 前記非溶着部の幅が、1〜5mmであることを特徴とする請求項記載の農業用フィルム。The width of the non-weld portion, agricultural film according to claim 1, characterized in that it is a 1 to 5 mm. 補強帯が、長尺状のポリオレフィン系フィルムの両端縁を折り曲げ、該折り曲げ幅の内部に酢酸ビニル系樹脂テープを挿入してなることを特徴とする請求項1又は2記載の農業用フィルム。The agricultural film according to claim 1 or 2 , wherein the reinforcing band is formed by bending both end edges of a long polyolefin film and inserting a vinyl acetate resin tape into the bent width. フィルムバンドが、幅40mm以上70mm未満のポリオレフィン系延伸フィルムであり、溶着部の幅が30mm以上60mm未満であることを特徴とする請求項1、2又は3記載の農業用フィルム。The agricultural film according to claim 1, 2 or 3 , wherein the film band is a stretched polyolefin film having a width of 40 mm or more and less than 70 mm, and the width of the welded portion is 30 mm or more and less than 60 mm. 溶着部が、高周波シール方式による熱溶着によって形成されることを特徴とする請求項1、2、3又は4記載の農業用フィルム。The agricultural film according to claim 1, 2, 3, or 4 , wherein the welded portion is formed by thermal welding using a high frequency sealing method.
JP2001207001A 2001-07-06 2001-07-06 Agricultural film Expired - Fee Related JP3759433B2 (en)

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JP4918013B2 (en) * 2007-10-24 2012-04-18 住友化学株式会社 Thermal curtain and horticultural house
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