JP4658572B2 - Agricultural multi-film - Google Patents
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- JP4658572B2 JP4658572B2 JP2004349001A JP2004349001A JP4658572B2 JP 4658572 B2 JP4658572 B2 JP 4658572B2 JP 2004349001 A JP2004349001 A JP 2004349001A JP 2004349001 A JP2004349001 A JP 2004349001A JP 4658572 B2 JP4658572 B2 JP 4658572B2
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- 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
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Description
本発明は、農業用マルチフィルムに関し、詳しくはマルチ展張時に裂けることがなく、栽培中に引き裂いて作業できる農業用マルチフィルムに関する。 The present invention relates to an agricultural multi-film, and more particularly to an agricultural multi-film that does not tear during multi-stretching and can be torn during cultivation.
従来、ミシン目加工を施した農業用マルチフィルムは、特許文献１、２に記載のものが知られている。
Conventionally, the agricultural multi-film which gave the perforation processing has a thing of
かかる従来のミシン目は、刃物で不連続にカットしたり、熱刃でミシン目状に溶断する方法が採用されていた。
しかし、刃物で不連続にカットする手法は、マルチ展張時に切れ目から裂けてしまう問題がある。特に植穴を通過するミシン目は裂けやすく実用的でない問題が有った。 However, the method of cutting discontinuously with a blade has a problem of tearing from the cut during multi-stretching. In particular, the perforation passing through the planting hole has a problem that it is easy to tear and is not practical.
また熱刃でミシン目状に溶断する手法では、上記のように裂ける問題が解消されるが、溶融部が盛り上がり、巻き取り時にコブになりやすい欠点があった。 Further, the method of fusing in a perforated shape with a hot blade solves the problem of tearing as described above, but there is a drawback that the melted part rises and tends to become bumps during winding.
そこで、本発明者は、マルチ展張時に裂けることがなく、栽培中に引き裂いて作業できる農業用マルチフィルムを検討した結果、以下の知見を得た。 Then, this inventor examined the multi film for agriculture which can be torn and work during cultivation without tearing at the time of multi expansion, and obtained the following knowledge.
即ち、ミシン目加工手段としてレーザービーム照射に着目し、マルチフィルムとして広く普及している低密度ポリエチレン系フィルムにレーザー照射したところ、フィルム密度が一定値以下では引き裂き性が悪く、栽培時ミシン目を破る作業がし難いことがわかった。また厚さ条件も引き裂き性に大きく影響することがわかった。さらに無機添加剤又は着色顔料を含有してなるマルチフィルムの場合に良好なミシン目を形成できることがわかった。さらにレーザースキャン速度も良好なミシン目形成に影響することを見出した。 That is, focusing on laser beam irradiation as a perforation processing means, laser irradiation was performed on a low-density polyethylene film widely spread as a multi-film. I found it difficult to break. It was also found that the thickness condition greatly affects the tearability. Furthermore, it has been found that a good perforation can be formed in the case of a multifilm containing an inorganic additive or a color pigment. Furthermore, it was found that the laser scan speed also affects good perforation formation.
そこで、本発明は、特定の密度と厚みで且つ無機添加剤又は着色顔料を含有してなる低密度ポリエチレン系フィルムにレーザービームを照射することにより、マルチ展張時に裂けることがなく、栽培中に引き裂いて作業でき、更に巻きコブを発生させない農業用マルチフィルムを提供することを課題とする。 Therefore, the present invention irradiates a laser beam to a low density polyethylene film having a specific density and thickness and containing an inorganic additive or a color pigment, so that it does not tear during multi-stretching and tears during cultivation. It is another object of the present invention to provide an agricultural multi-film that can be worked on and that does not generate winding bumps.
更に、本発明の他の課題は、以下の記載によって明らかとなる。 Furthermore, the other subject of this invention becomes clear by the following description.
上記課題は、以下の各発明によって解決される。 The above problems are solved by the following inventions.
（請求項１）
低密度ポリエチレン系フィルムにレーザー照射によって、溶融部が盛り上がらずにフィルムの一方の面から他方の面に亘る加工面の断面が直線的に形成されるスリット状のミシン目加工を施してなる農業用マルチフィルムであって、
該低密度ポリエチレン系フィルムが、密度０．９１０〜０．９３５ｇ／ｃｍ３、厚さ１０μｍ〜３０μｍで、且つ粒径が０．０５〜１０μｍのシリカ粉末又はアルミ粉末からなる、レーザーとの感応性を発揮する無機添加剤をフィルムのベース樹脂原料１００重量部に対して２〜５０重量部含有してなり、
該レーザーが、出力１０〜１００ｗの炭酸ガスレーザーであり、フィルム加工速度が１００〜１０００ｍｍ／ｓｅｃであることを特徴とする農業用マルチフィルム。
(Claim 1)
It by the laser irradiation to the low-density polyethylene-based film is subjected to a slit-shaped perforation forming the cross-section of the machined surface ranging from one surface of the film without Moriagara melting portion on the other side is linearly formed Agricultural multi-film
Low density polyethylene film, density of 0.910 to 0.935 g / cm 3, a thickness of 10 m to 30 m, and the particle diameter of silica powder or aluminum powder 0.05～10Myu m, sensitive and laser Containing 2 to 50 parts by weight of an inorganic additive exhibiting properties with respect to 100 parts by weight of the base resin material of the film,
An agricultural multi-film, wherein the laser is a carbon dioxide gas laser having an output of 10 to 100 w, and a film processing speed is 100 to 1000 mm / sec.
（請求項２）
ミシン目加工によるスリット幅が、１ｍｍ未満であることを特徴とする請求項１記載の農業用マルチフィルム。
(Claim 2 )
Slit width by perforation processing, agricultural mulch film according to claim 1, wherein less than 1 mm.
（請求項３）
低密度ポリエチレン系フィルムが、低密度ポリエチレン （ＬＤＰＥ）、直鎖状（線状）低密度ポリエチレン（マルチサイト触媒を使用して重合したポリマ−、ＬＬＤＰＥ）、メタロセン触媒（シングルサイト触媒）を使用して重合したエチレン−α・オレフィン共重合体の何れかから選択されることを特徴とする請求項１又は２記載の農業用マルチフィルム。
(Claim 3 )
Low density polyethylene film uses low density polyethylene (LDPE), linear (linear) low density polyethylene (polymer polymerized using multi-site catalyst, LLDPE), metallocene catalyst (single site catalyst). The agricultural multifilm according to claim 1 , wherein the agricultural multifilm is selected from any of ethylene-α / olefin copolymers polymerized by polymerization.
本発明によれば、特定の密度と厚みで且つ無機添加剤又は着色顔料を含有してなる低密度ポリエチレン系フィルムにレーザービームを照射することにより、マルチ展張時に裂けることがなく、栽培中に引き裂いて除去でき、更に巻きコブを発生させない農業用マルチフィルムを提供することができる。 According to the present invention, a low-density polyethylene film having a specific density and thickness and containing an inorganic additive or a color pigment is irradiated with a laser beam, so that it does not tear during multi-stretching and tears during cultivation. Thus, it is possible to provide an agricultural multi-film that can be removed by the above-described method and that does not generate winding bumps.
本発明の農業用マルチフィルムは、低密度ポリエチレン系フィルムにレーザー照射によるミシン目加工を施してなる農業用マルチフィルムであって、該低密度ポリエチレン系フィルムが、密度０．９１０〜０．９３５ｇ／ｃｍ3、厚さ１０μｍ〜３０μｍで、且つ無機添加剤又は着色顔料を含有してなることを特徴とするものである。 The agricultural multifilm of the present invention is an agricultural multifilm obtained by subjecting a low density polyethylene film to perforation processing by laser irradiation, and the low density polyethylene film has a density of 0.910 to 0.935 g / cm 3 , a thickness of 10 μm to 30 μm, and an inorganic additive or a color pigment is contained.
本発明に用いる低密度ポリエチレン系フィルムは、低密度ポリエチレン （ＬＤＰＥ）、直鎖状（線状）低密度ポリエチレン（マルチサイト触媒を使用して重合したポリマ−、ＬＬＤＰＥ）、メタロセン触媒（シングルサイト触媒）を使用して重合したエチレン−α・オレフィン共重合体（メタロセンＰＥ）の何れかから選択されることが好ましい。中でも好ましいのは、直鎖状（線状）低密度ポリエチレン（マルチサイト触媒を使用して重合したポリマ−、ＬＬＤＰＥ）、メタロセン触媒（シングルサイト触媒）を使用して重合したエチレン−α・オレフィン共重合体（メタロセンＰＥ）である。 The low density polyethylene film used in the present invention includes low density polyethylene (LDPE), linear (linear) low density polyethylene (polymer polymerized using a multisite catalyst, LLDPE), metallocene catalyst (single site catalyst). ) Is preferably selected from any of ethylene-α / olefin copolymers (metallocene PE) polymerized by using a polymer. Among these, linear (linear) low density polyethylene (polymer polymerized using a multisite catalyst, LLDPE), ethylene-α / olefin copolymer polymerized using a metallocene catalyst (single site catalyst) are preferred. It is a polymer (metallocene PE).
メタロセン触媒 により共重合して得られるエチレン−α−オレフィン共重合体樹脂は、通常メタロセンポリエチレンといわれているものであり、エチレンと１−ブテン、１−ペンテン、１−ヘキセン、４−メチル−１−ペンテン、１−オクテン、１−デセン等、炭素原子数４〜１０のα−オレフィンとの共重合体が挙げられる。 The ethylene-α-olefin copolymer resin obtained by copolymerization with a metallocene catalyst is usually referred to as metallocene polyethylene, and ethylene and 1-butene, 1-pentene, 1-hexene, 4-methyl-1 -A copolymer with C4-C10 alpha olefins, such as -pentene, 1-octene, 1-decene, is mentioned.
低密度ポリエチレン系フィルムの密度は０．９１０〜０．９３５ｇ／ｃｍ3の範囲であり、好ましくは０．９１５〜０．９３０ｇ／ｃｍ3である。 The density of low-density polyethylene film is in the range of 0.910 to 0.935 g / cm 3, preferably 0.915~0.930g / cm 3.
フィルム密度が０．９１０ｇ／ｃｍ3未満では引き裂き性が悪く、栽培時除去しがたい問題がある。またフィルム密度が０．９３５ｇ／ｃｍ3を越えると引き裂き性はよいが、展張時に破れてしまう問題がある。 If the film density is less than 0.910 g / cm 3, the tearability is poor and there is a problem that it is difficult to remove during cultivation. If the film density exceeds 0.935 g / cm 3 , the tearability is good, but there is a problem that the film is broken during stretching.
なお、メタロセンポリエチレンの密度（ＪＩＳ−Ｋ６７６０）は、一般に、０．８６０ｇ／ｃｍ3から０．９５０ｇ／ｃｍ3以上の広い範囲に渡っているが、本発明では、密度０．９１０〜０．９３５ｇ／ｃｍ3の範囲のものを用いている点で特徴がある。 The density of the metallocene polyethylenes (JIS-K6760) is generally, although over a 0.860 g / cm 3 to 0.950 g / cm 3 or more wide range, in the present invention, the density 0.910~0.935g It is characterized in that a material in the range of / cm 3 is used.
低密度ポリエチレン系フィルムの厚さは、１０μｍ〜３０μｍの範囲であり、好ましくは１５〜２５μｍである。１０μｍ未満では引き裂け易すぎる問題があり、３０μｍを越えると引き裂き除去しがたい欠点がある。 The thickness of the low density polyethylene film is in the range of 10 μm to 30 μm, preferably 15 to 25 μm. If it is less than 10 μm, there is a problem that it is too easy to tear, and if it exceeds 30 μm, there is a drawback that it is difficult to tear and remove.
フィルムに添加される無機添加剤としては、シリカ、アルミナ、ハイドロタルサイト、ネフェリン等が挙げられ、これらの１種又は２種以上を混合使用できる。また着色顔料としてはカーボンブラック、酸化チタン、アルミ粉、ベンガラ、フタロシアニンなどが挙げられ、これらの１種又は２種以上を混合使用できる。 Examples of the inorganic additive added to the film include silica, alumina, hydrotalcite, nepheline and the like, and one or more of these can be used in combination. Examples of the color pigment include carbon black, titanium oxide, aluminum powder, bengara, phthalocyanine, and the like, and one or more of these can be used in combination.
本発明では、無機添加剤と着色顔料を併用することもできる。 In the present invention, an inorganic additive and a color pigment can be used in combination.
無機添加剤の添加量は、フィルムのベース樹脂原料１００重量部に対して１〜１００重量部の範囲であり、好ましくは２〜５０重量部の範囲である。 The addition amount of the inorganic additive is in the range of 1 to 100 parts by weight, preferably in the range of 2 to 50 parts by weight, with respect to 100 parts by weight of the base resin material of the film.
着色顔料の添加量は、フィルムのベース樹脂原料１００重量部に対して１〜１００重量部の範囲であり、好ましくは２〜５０重量部の範囲である。 The addition amount of the color pigment is in the range of 1 to 100 parts by weight, preferably in the range of 2 to 50 parts by weight with respect to 100 parts by weight of the base resin raw material of the film.
無機添加剤と着色顔料の粒径は、レーザーとの感応性を考慮して０．０５〜１０μｍの範囲が好ましく、より好ましくは０．１〜５μｍの範囲である。 The particle diameter of the inorganic additive and the color pigment is preferably in the range of 0.05 to 10 μm, more preferably in the range of 0.1 to 5 μm, taking into account the sensitivity to the laser.
フィルム中に添加できる他の成分としては、滑剤、耐候安定剤、可塑剤等が挙げられる。 Examples of other components that can be added to the film include lubricants, weathering stabilizers, plasticizers, and the like.
ミシン目加工に用いるレーザーは、炭酸ガスレーザー,アルゴンレーザー,ＹＡＧレーザー等が挙げられるが、炭酸ガスレーザーは高エネルギーを得易い等の点から、本発明のミシン目加工の形成に好適である。 Lasers used for perforation processing include carbon dioxide laser, argon laser, YAG laser and the like. Carbon dioxide laser is suitable for the formation of perforation according to the present invention because it is easy to obtain high energy.
次に、レーザービーム照射によるミシン目の形成について説明する。 Next, the formation of perforations by laser beam irradiation will be described.
図１に示すようなミシン目を形成する場合、フィルム表面の微小領域にレーザービームを照射すると、その領域は瞬時に溶解又は蒸発してミシン目状のスリットが形成される。図１において、１はマルチフィルム、２はミシン目、３は栽培作物、４は植生孔である。 In the case of forming a perforation as shown in FIG. 1, when a laser beam is irradiated onto a minute region on the film surface, the region is instantaneously dissolved or evaporated to form a perforated slit. In FIG. 1, 1 is a multi film, 2 is a perforation, 3 is a cultivated crop, and 4 is a vegetation hole.
具体的には、出力１０〜１００ｗの炭酸ガスレーザーで、フィルム表面の所定位置をレーザースキャンする。 Specifically, a predetermined position on the film surface is laser-scanned with a carbon dioxide laser having an output of 10 to 100 w.
レーザーによるフィルム加工速度は、遅いと断面が波打ち、また早すぎると切れが不良になるので、１００〜１０００ｍｍ／secの範囲が好ましい。 The film processing speed by the laser is preferably in the range of 100 to 1000 mm / sec because the cross section is wavy when it is slow, and the cut is poor when it is too fast.
ここで、レーザーによるフィルム加工速度とは、固定されたレーザービーム照射装置から照射されるレーザービームが焦点を結ぶ位置をフィルムが通過し加工される速度を言う。 Here, the film processing speed by the laser means the speed at which the film passes through the position where the laser beam irradiated from a fixed laser beam irradiation device is focused.
かかるスキャンにより、スリット状のミシン目加工が可能となる。スリット幅は、１ｍｍ未満であることが好ましい。 Such scanning enables slit-like perforation. The slit width is preferably less than 1 mm.
本発明においては、フィルム特性が特定され、しかも無機添加剤や着色顔料を含有しているので、無機添加剤や着色顔料の微粒子とレーザーとの感応性を効果的に発揮し、精度のよいミシン目を形成できる。 In the present invention, the film characteristics are specified, and since the inorganic additive and the color pigment are contained, the sensitivity of the fine particles of the inorganic additive and the color pigment and the laser is effectively exhibited, and the precision sewing machine Can form eyes.
図２には、通常の透明マルチフィルムのレーザー照射の例と、本発明のマルチフィルムのレーザー照射の例を示している。本発明マルチでは、無機添加剤や着色顔料の微粒子５とレーザーとの感応性を効果的に発揮し、精度のよいミシン目を形成していることがわかる。 In FIG. 2, the example of the laser irradiation of the normal transparent multifilm and the example of the laser irradiation of the multifilm of this invention are shown. It can be seen that the multi of the present invention effectively exhibits the sensitivity of the fine particles 5 of the inorganic additive or the color pigment and the laser, and forms a perforation with high accuracy.
本発明のレーザーミシン目加工によって形成されるミシン目の形状は特に限定されない。 The shape of the perforation formed by the laser perforation processing of the present invention is not particularly limited.
例えば、直線状、波状、ジグザグ状、鎖目状、筋状、階段状、水玉状、小判状、うろこ状、渦巻状、星状、十字状等々目的の場所で引裂け易い形状であれば良い。 For example, it may be a shape that can be easily torn at a desired place, such as a straight line, a wavy shape, a zigzag shape, a chain shape, a streak shape, a staircase shape, a polka dot shape, an oval shape, a spiral shape, a star shape, and a cross shape. .
以上説明した本発明の農業マルチフィルムは、苗を定植し、その後、苗が活着してからマルチフィルムを苗上に被せ、フィルムに加工したミシン目を破り、苗をフィルム上に引き出すようにする栽培法や、これとは逆に、ミシン目付きマルチフィルムを先に展張し、その後、ミシン目よりフィルムに開口を形成し、その開口に苗や種子を定植・播種する一般作物栽培にも当然使用可能である。 The agricultural multi-film of the present invention described above is for planting seedlings, and then covering the multi-film on the seedling after the seedling has settled, breaking the perforations processed into the film, and drawing the seedling on the film Naturally, it is also used for cultivation methods and for general crop cultivation where perforated multi-films are spread first, then an opening is formed in the film from the perforation, and seedlings and seeds are planted and seeded in the opening. Is possible.
本発明の農業マルチフィルムは、例えば、イチゴやスィートコーン、レタス等の葉物、スイカやメロン等々の栽培に効果的に適用できる。 The agricultural multi-film of the present invention can be effectively applied to cultivation of leaves such as strawberry, sweet corn, lettuce, watermelon, melon and the like.
以下、実施例により本発明の効果を例証する。 Hereinafter, the effect of the present invention is illustrated by examples.
実施例１
（マルチフィルムの製造）
表１に示すLLDPEまたはメタロセンPEをベースに、表１に示す添加剤（無機添加剤や着色顔料）を配合して、インフレーション成形法で、幅950mmのフィルム（NO.１−NO.７）を作り、レーザーでミシン目加工を行った。
Example 1
(Manufacture of multi-film)
Based on the LLDPE or metallocene PE shown in Table 1, the additives (inorganic additives and color pigments) shown in Table 1 are blended, and a film with a width of 950 mm (NO.1-NO.7) is formed by an inflation molding method. Made and perforated with a laser.
（ミシン目加工）
処方１：炭酸ガスレーザー装置
出力３０Ｗ
フィルム加工速度 600mm／sec
スリット幅：0.3mm
(Perforation processing)
Formula 1: Carbon dioxide laser device
Output 30W
Film processing speed 600mm / sec
Slit width: 0.3mm
（ミシン目形状）
図３に示すように、植え穴位置に十字型を連続したミシン目を作る。長さｘ＝8cm、
間隔ｙ＝5cmとした。
(Perforation shape)
As shown in FIG. 3, a perforation in which a cross shape is continuous at the planting hole position is made. Length x = 8cm,
The interval y was 5 cm.
（栽培試験）
みかど化工（株）の試験圃場（千葉県市原市）に、ハウス２棟を用意し、その各々のハウス内に畦４列を作った。
(Cultivation test)
Two houses were prepared in the test field (Ichihara City, Chiba Prefecture) of Mikado Chemical Co., Ltd., and four rows of firewood were made in each house.
各畦に、イチゴ苗を、９月５日に定植し、その後、９月１５日にハウスＡ棟の４列畦には、実施例マルチフィルムを、ハウスＢ棟の４列畦には比較マルチフィルムを被覆し、それぞれ苗茎葉の位置でミシン目を破り茎葉をマルチ上に引き出した。 Strawberry seedlings are planted on each pod on September 5th, and then, on September 15th, the example multifilm is placed on the 4th row of the House A building, and the comparison mulch is placed on the 4th row of the House B building. The film was covered, and the perforations were broken at the positions of the seedling foliage, and the foliage was pulled out onto the mulch.
ここで被覆時や茎葉の引出し作業時に不良のものは使用を止め、他のものと交換した。 Here, the defective ones were stopped and replaced with other ones at the time of covering or at the time of drawing out the foliage.
その後、通常の栽培管理を行い、翌年５月３日にマルチフィルムを除去し、栽培を終了した。 Then, normal cultivation management was performed, the multifilm was removed on May 3 of the following year, and cultivation was terminated.
＜ハウス仕様＞
ハウスの大きさ：間口４．５ｍ、棟高２．５ｍ、長さ２０ｍ、
ハウスフィルム：みかど化工社製「農ＰＯフィルム」
商品名「スーパーソーラー」
（「農ＰＯフィルム」、「スーパーソーラー」はいずれも登録商標）
<House specification>
House size: frontage 4.5m, building height 2.5m, length 20m,
House film: “Agricultural PO film” manufactured by Mikado Kakko
Product name "Super Solar"
("Nori PO Film" and "Super Solar" are both registered trademarks)
＜畦仕様＞
幅： ６０ｃｍ
高さ：１０ｃｍ
長さ：１８ｍ
列数：４列／１ハウス当り
<畦 specifications>
Width: 60cm
Height: 10cm
Length: 18m
Number of rows: 4 rows per house
＜栽培＞
栽培条件：肥料、薬散、潅水、加温等は通常のイチゴ栽培条件に従った。
イチゴ品種：「さちのか」
定植：２条植、株間２０ｃｍ
本数：１畦当り１８０株（７２０株／１ハウス）
<Cultivation>
Cultivation conditions: Fertilizer, Yakusan, irrigation, warming, etc. followed normal strawberry cultivation conditions.
Strawberry variety: “Sachinoka”
Fixed planting: 2 row planting, 20cm between stocks
Number: 180 per cocoon (720 shares / house)
（評価及び試験結果）
評価項目
１ ミシン目加工精度（レーザー感応性）：精度が悪いとミシン目がうまく出来ず、さらには巻き瘤が出来る。
評価基準
○：良好
△：普通
×：不良
(Evaluation and test results)
Evaluation item 1 Perforation processing accuracy (laser sensitivity): If the accuracy is poor, the perforation cannot be made well, and further, an aneurysm is formed.
Evaluation criteria ○: Good △: Normal ×: Poor
２ マルチ展張作業性：展張時ミシン目から引き裂き破れるか否かを以下の基準で評価した。
○：良好
△：普通
×：不良
2 Multi-stretching workability: Whether or not torn from the perforation during stretching was evaluated according to the following criteria.
○: Good △: Normal ×: Bad
３ ミシン目破り容易性：イチゴの茎葉を容易に引き出せるか否かを以下の基準で評価した。
○：極めて容易に引き出せる
△：容易に引き出せる
×：引き出し困難
3 Ease of breaking perforations: The following criteria were used to evaluate whether strawberries and leaves could be pulled out easily.
○: Can be pulled out very easily △: Can be pulled out easily ×: Difficult to pull out
評価結果
表１に示す。
Evaluation results are shown in Table 1.
実施例２
実施例１において、ミシン目加工処方を以下のように変えた以外は、同様に試験を行った。
Example 2
In Example 1, the test was performed in the same manner except that the perforation processing recipe was changed as follows.
処方２：炭酸ガスレーザー装置
出力３０Ｗ
フィルム加工速度 300mm／sec
スリット幅：0.7mm
処方３：炭酸ガスレーザー装置
出力３０Ｗ
フィルム加工速度 50mm／sec
スリット幅：1.5mm
Formula 2: Carbon dioxide laser device
Output 30W
Film processing speed 300mm / sec
Slit width: 0.7mm
Formula 3: Carbon dioxide laser device
Output 30W
Film processing speed 50mm / sec
Slit width: 1.5mm
その結果、ミシン目加工処方２は、ミシン目加工処方１と同様の結果が得られたが、ミシン目加工処方３で行ったマルチフィルムは、栽培期間中にミシン目から雑草が生えてイチゴの栽培を阻害した。
As a result, the
１：マルチフィルム
２：ミシン目
３：栽培作物
４：植生孔
５：微粒子
1: Multi film 2: Perforation 3: Cultivated crop 4: Vegetation hole 5: Fine particles
Claims (3)
該低密度ポリエチレン系フィルムが、密度０．９１０〜０．９３５ｇ／ｃｍ３、厚さ１０μｍ〜３０μｍで、且つ粒径が０．０５〜１０μｍのシリカ粉末又はアルミ粉末からなる、レーザーとの感応性を発揮する無機添加剤をフィルムのベース樹脂原料１００重量部に対して２〜５０重量部含有してなり、
該レーザーが、出力１０〜１００ｗの炭酸ガスレーザーであり、フィルム加工速度が１００〜１０００ｍｍ／ｓｅｃであることを特徴とする農業用マルチフィルム。 It by the laser irradiation to the low-density polyethylene-based film is subjected to a slit-shaped perforation forming the cross-section of the machined surface ranging from one surface of the film without Moriagara melting portion on the other side is linearly formed Agricultural multi-film
Low density polyethylene film, density of 0.910 to 0.935 g / cm 3, a thickness of 10 m to 30 m, and the particle diameter of silica powder or aluminum powder 0.05～10Myu m, sensitive and laser Containing 2 to 50 parts by weight of an inorganic additive exhibiting properties with respect to 100 parts by weight of the base resin material of the film,
An agricultural multi-film, wherein the laser is a carbon dioxide gas laser having an output of 10 to 100 w, and a film processing speed is 100 to 1000 mm / sec.
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| JP7074333B2 (en) * | 2018-06-01 | 2022-05-24 | みかど化工株式会社 | Laser-machinable agricultural film and laser-machining method for agricultural film |
| KR102510721B1 (en) | 2022-01-18 | 2023-03-17 | 농업회사법인 주식회사 유로팜스 | Biodegradable much film for cultivating agro-plants |
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| JPH0770339A (en) * | 1993-09-03 | 1995-03-14 | Okura Ind Co Ltd | Silver mulch film |
| JPH10136801A (en) * | 1996-11-05 | 1998-05-26 | Okura Ind Co Ltd | Light shieldable mulching film and its spreading method as well as production of this mulching film |
| JPH10139900A (en) * | 1996-11-06 | 1998-05-26 | Kishimoto Akira | Processing of resin surface |
| JP2001045880A (en) * | 1999-08-03 | 2001-02-20 | Mikado Kako Kk | Film for farming |
| JP2001320977A (en) * | 2000-05-12 | 2001-11-20 | Mitsui Chemicals Inc | Antifogging film |
| JP2002171845A (en) * | 2000-12-06 | 2002-06-18 | Sekisui Chem Co Ltd | Mulch film for agriculture |
| JP2003003053A (en) * | 2001-03-30 | 2003-01-08 | Daicel Chem Ind Ltd | Aliphatic polyester biodegradable resin film-like molding |
| JP2003285361A (en) * | 2002-03-28 | 2003-10-07 | Daicel Chem Ind Ltd | Embossed film consisting of aliphatic polyester resin, multi-film for agriculture, and method for manufacturing the same |
| JP2004154077A (en) * | 2002-11-07 | 2004-06-03 | Sekisui Film Kk | Mulch film for agriculture |
| JP2004166541A (en) * | 2002-11-18 | 2004-06-17 | Japan Polypropylene Corp | Mulching film for agricultural use |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0770339A (en) * | 1993-09-03 | 1995-03-14 | Okura Ind Co Ltd | Silver mulch film |
| JPH10136801A (en) * | 1996-11-05 | 1998-05-26 | Okura Ind Co Ltd | Light shieldable mulching film and its spreading method as well as production of this mulching film |
| JPH10139900A (en) * | 1996-11-06 | 1998-05-26 | Kishimoto Akira | Processing of resin surface |
| JP2001045880A (en) * | 1999-08-03 | 2001-02-20 | Mikado Kako Kk | Film for farming |
| JP2001320977A (en) * | 2000-05-12 | 2001-11-20 | Mitsui Chemicals Inc | Antifogging film |
| JP2002171845A (en) * | 2000-12-06 | 2002-06-18 | Sekisui Chem Co Ltd | Mulch film for agriculture |
| JP2003003053A (en) * | 2001-03-30 | 2003-01-08 | Daicel Chem Ind Ltd | Aliphatic polyester biodegradable resin film-like molding |
| JP2003285361A (en) * | 2002-03-28 | 2003-10-07 | Daicel Chem Ind Ltd | Embossed film consisting of aliphatic polyester resin, multi-film for agriculture, and method for manufacturing the same |
| JP2004154077A (en) * | 2002-11-07 | 2004-06-03 | Sekisui Film Kk | Mulch film for agriculture |
| JP2004166541A (en) * | 2002-11-18 | 2004-06-17 | Japan Polypropylene Corp | Mulching film for agricultural use |
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