JP2017012067A - Weed-preventing sheet - Google Patents

Weed-preventing sheet Download PDF

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JP2017012067A
JP2017012067A JP2015131551A JP2015131551A JP2017012067A JP 2017012067 A JP2017012067 A JP 2017012067A JP 2015131551 A JP2015131551 A JP 2015131551A JP 2015131551 A JP2015131551 A JP 2015131551A JP 2017012067 A JP2017012067 A JP 2017012067A
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sheet
warp
yarn
weft
woven fabric
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JP6683432B2 (en
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幸輔 宮崎
Kosuke Miyazaki
幸輔 宮崎
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Seiren Co Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide a weed-preventing sheet which is laid on soil, and is excellent in resistance in initial penetration, workability, and followability to soil, for preventing weeds in a public road slope, a railroad track, an agricultural material, keeping of a fine view around a house, and the like.SOLUTION: A weed-preventing sheet is characterized in that at least one face of a woven fabric whose warp and weft is constituted with a multifilament yarn is coated with a polymer resin and that a length of a flotation part of the warp and the weft is 0.8 mm or less. It is preferable that an amount of the polymer resin to be used to coat is 1-5% to the weight of the woven fabric and the cover factor of the woven fabric is 2000 or more.SELECTED DRAWING: Figure 1

Description

本発明は、防草シートに関し、さらに詳しくは、公共道路法面、鉄道線路、農場、住宅周囲等の土壌の上に敷設し、雑草の繁殖を抑え、かつ透水性を有する防草シートに関する。   The present invention relates to a weedproof sheet, and more particularly, to a weedproof sheet that is laid on soil such as a public road slope, a railway track, a farm, and a house, suppresses the growth of weeds, and has water permeability.

防草シートは、雑草の繁殖を抑える防草効果を有しており、建物や街路樹の周囲の美観を維持するため、あるいは、果樹園や野菜園等の栽培地面に直接敷設して果樹や野菜の生育環境を整えるため、あるいは、鉄道線路等の安全性を確保するために用いられる。   The herbicidal sheet has a herbicidal effect that suppresses the growth of weeds.To maintain the beauty of the surroundings of buildings and roadside trees, or directly laying on the cultivation ground such as orchards and vegetable gardens, It is used to adjust the growth environment of vegetables or to ensure the safety of railway tracks and the like.

従来、ビニールシートやゴム引きシート等を土壌の上に敷設するといった手段がとられていたが、シートに透水性がなく水が地中に浸透せず、樹木の間に敷設した場合、土壌が乾燥するため樹木が枯死する問題があった。   Conventionally, measures such as laying vinyl sheets or rubberized sheets on the soil have been taken, but if the sheet is not permeable and water does not penetrate into the ground, There was a problem that trees died due to drying.

このような問題を解決するために近年では、防草手段としては、透水性の観点から不織布、織物などの布帛を敷設するという手段がとられていた。
例えば、特許文献1には、カバーファクターが1000〜2000である織物からなる防草シートが開示されている。マルチフィラメント糸を用いた織物であるため柔軟で、施工性に優れ、さらに緻密構造を有しており、遮光性が良好となり防草効果も発揮できる。しかしながら、チガヤ、スギナ等の貫通力の高い植物等においては、先端の鋭利な芽を持っているため、シートの貫通を完全に抑えることができなかった。
また例えば、特許文献2には、ポリエステル不織布を圧縮し硬質に仕上げたシートと土になじみやすいやわらかいポリエステル不織布を上下に張り合わせた防草シートが開示されている。硬質タイプの不織布を用いているため、遮光性が良好であり、さらにチガヤ、スギナ等の貫通力の高い植物において、優れた耐貫通性を発揮できるものであった。しかしながら、柔軟性が優れず、土壌の凹凸に追従できずに、シート重ね部の隙間から植物が繁殖する可能性があり、さらには施工性が劣るおそれもあった。
In recent years, in order to solve such a problem, as a herbicidal means, a means of laying a fabric such as a nonwoven fabric or a woven fabric has been taken from the viewpoint of water permeability.
For example, Patent Document 1 discloses a weedproof sheet made of a woven fabric having a cover factor of 1000 to 2000. Because it is a woven fabric using multifilament yarn, it is flexible, has excellent workability, has a dense structure, has good light shielding properties, and can exhibit a herbicidal effect. However, plants with high penetrating ability such as chigaya and horsetail have sharp shoots at the tip, and thus the penetration of the sheet could not be completely suppressed.
Further, for example, Patent Document 2 discloses a weedproof sheet in which a polyester nonwoven fabric is compressed and hardened and a soft polyester nonwoven fabric that is easy to adjust to soil is laminated up and down. Since a hard nonwoven fabric is used, the light-shielding property is good, and in addition, excellent penetration resistance can be exhibited in plants with high penetration such as chigaya and horsetail. However, the flexibility is not excellent, and it is impossible to follow the unevenness of the soil, and there is a possibility that the plant propagates through the gap between the sheet overlapping portions, and further, the workability may be deteriorated.

特開2002−125484号公報JP 2002-125484 A 実案第3168626号公報Japanese Utility Model No. 3168626

本発明は、前述の問題を解決するものであり、公共道路法面、鉄道線路、農場、住宅周囲等の土壌の上に敷設し、雑草の繁殖を抑えために、初期貫入抵抗力に優れ、かつ施工性、土壌追従性、透水性に優れた防草シートを提供することを目的とする。   The present invention solves the above-mentioned problems, laying on the soil such as public road slopes, railroad tracks, farms, houses, etc., in order to suppress the growth of weeds, excellent initial penetration resistance, And it aims at providing the weedproof sheet excellent in construction property, soil followability, and water permeability.

本発明に係る防草シートは前述した目的を達成するものであって、経糸及び緯糸がマルチフィラメント糸を用いて構成される織物の少なくとも片面に高分子樹脂が付与され、前記経糸及び前記緯糸の浮き部の長さが0.8mm以下である。
前記高分子樹脂の付与量が、織物重量に対し1〜5%であることが好ましい。
前記織物のカバーファクターが2000以上であることが好ましい。
前記防草シートの嵩密度が0.4g/cm以上であることが好ましい。
前記防草シートに対する直径2mm、長さ7cm、かつ先端3cm部分を円錐とした鉄製軸(以下、チガヤ針2と示す)による初期貫入抵抗力が6.0N以上であることが好ましい。
The weedproof sheet according to the present invention achieves the above-described object, and a polymer resin is applied to at least one side of a woven fabric in which warps and wefts are composed of multifilament yarns. The length of the floating part is 0.8 mm or less.
It is preferable that the application amount of the polymer resin is 1 to 5% with respect to the weight of the fabric.
The cover factor of the fabric is preferably 2000 or more.
The bulk density of the herbicidal sheet is preferably 0.4 g / cm 3 or more.
It is preferable that an initial penetration resistance force by an iron shaft (hereinafter, referred to as a chigaya needle 2) having a diameter of 2 mm, a length of 7 cm, and a tip of 3 cm with respect to the herbicidal sheet is 6.0 N or more.

本発明の防草シートは、公共道路法面、鉄道線路、農場、住宅周囲等の土壌の上に敷設し、雑草の繁殖を抑えために、初期貫入抵抗力に優れ、かつ施工性、土壌追従性、透水性に優れた効果を奏する。   The weedproof sheet of the present invention is laid on the soil of public road slopes, railway tracks, farms, houses, etc., and has excellent initial penetration resistance and suppresses the growth of weeds. Excellent effects on water permeability and water permeability.

本発明に係る防草シートの一例の模式平面図及び拡大図である。It is the model top view and enlarged view of an example of the weedproof sheet concerning this invention. 本発明に係るチガヤ針による貫入抵抗力の一例を示すグラフである。It is a graph which shows an example of the penetration resistance force by the chigaya needle concerning the present invention. 本発明に係る貫入抵抗力のI〜III期における貫通状態を説明するチガヤ針の断面図である。It is sectional drawing of the chigaya needle | hook explaining the penetration state in the I-III period of penetration resistance which concerns on this invention.

本発明の防草シート1は、経糸及び緯糸がマルチフィラメント糸を用いて構成される織物の少なくとも片面に高分子樹脂が付与され、前記経糸及び前記緯糸の浮き部T,Tの長さが0.8mm以下である。尚、本明細書で用いる「浮き部」とは、経糸又は緯糸の糸が裏面から浮き出て表面に露出した箇所から裏面に沈む箇所までの部位を意味する。図1で示すように経糸の浮き部をT、緯糸の浮き部をTと示す。 Anti-weed sheet 1 of the present invention, warp and weft polymeric resin is applied to at least one surface of the fabric constructed using multifilament yarns, separated portion T A of the warp and the weft, the length of T B Is 0.8 mm or less. The “floating part” used in the present specification means a part from a part where a warp or weft thread is raised from the back surface and exposed to the surface to a part where the warp or the weft thread sinks to the back surface. As shown in FIG. 1, the warp floating portion is denoted as T A and the weft floating portion is denoted as T B.

本発明の防草シートに用いられる織物の経糸及び緯糸の原糸としては、マルチフィラメント糸を採用している。前記マルチフィラメント糸は、モノフィラメント糸、フラットヤーンやスリットヤーンよりも柔軟性を有し、シートの折れ等を防ぐことができる。また、起伏のある土壌に対してもシートが追従し、施工前に土壌を整地する必要性がなく、優れた施工性及び土壌追従性を発揮するばかりか、整地時に掛かる時間を削減でき、作業性を高めることができる。さらに、原糸自体が柔軟であるため、糸の交差部において屈曲性が得られ、交差部の空隙が小さくなり耐貫通性も向上する。   Multifilament yarn is adopted as the warp and weft yarn used in the weedproof sheet of the present invention. The multifilament yarn is more flexible than a monofilament yarn, flat yarn or slit yarn, and can prevent sheet folding and the like. In addition, the sheet follows the undulating soil, there is no need to level the soil before construction, it not only demonstrates excellent workability and soil followability, it can also reduce the time required for leveling, work Can increase the sex. Furthermore, since the raw yarn itself is flexible, flexibility is obtained at the intersection of the yarns, the gap at the intersection is reduced, and the penetration resistance is improved.

本発明を構成する織物としては、例えば;平織、綾織、朱子織等の三原組織;変化組織;経ビロードなどが挙げられる。なかでも、浮き部T,Tの長さが短く設定のしやすい平織、綾織にしたものが好ましく採用される。
また、織物を構成する層数については、前述した条件を満たした層を少なくとも一層有していれば、特に限定するものではなく、単層構造であっても二層以上の多層構造であってもよく、例えば、経二重織、緯二重織等の片二重組織;袋織等の経緯二重織;三重織等が挙げられる。なかでも、経緯二重織である袋織が好適に採用される。袋織であれば、シートの耐久性及び強度保持が良好であり、さらには、袋織は表層と裏層が独立しており、各層で貫入抵抗力を得られ、一層目を貫通してしまった場合でも、二層目で植物の貫通を抑制できる。
Examples of the woven fabric constituting the present invention include: Mihara texture such as plain weave, twill weave and satin weave; change texture; warp velvet and the like. Among them, the floating portion T A, easy plain weave length shorter setting T B, is that the twill is preferably employed.
Further, the number of layers constituting the fabric is not particularly limited as long as it has at least one layer that satisfies the above-described conditions, and even a single layer structure is a multilayer structure of two or more layers. For example, a single double structure such as a warp double weave or a weft double weave; a warp double weave such as a bag weave; a triple weave or the like. Especially, the bag weave which is a background double weave is employ | adopted suitably. If it is a bag weave, the durability and strength retention of the sheet is good, and furthermore, the bag weave has an independent surface layer and back layer, each layer gains penetration resistance and penetrates the first layer However, plant penetration can be suppressed in the second layer.

前記マルチフィラメント糸に使用される繊維種としては、特に限定されるものではなく、例えばポリエステル、ポリアミド、アクリル、ポリ塩化ビニル、ポリウレタン等の合成繊維、アセテート、トリアセテート、プロミックス等の半合成繊維、レーヨン、キュプラ等の再生繊維のいずれの繊維種も採用可能である。なかでも生産性及び耐候性の観点から、ポリエステルが好ましい。   The fiber type used for the multifilament yarn is not particularly limited. For example, synthetic fibers such as polyester, polyamide, acrylic, polyvinyl chloride, and polyurethane, semi-synthetic fibers such as acetate, triacetate, and promix, Any fiber type of recycled fibers such as rayon and cupra can be used. Of these, polyester is preferred from the viewpoints of productivity and weather resistance.

前記マルチフィラメント糸の総繊度は、84〜330dtexが好ましい。84dtex以上であれば、シートにハリコシが得られ、施工性が向上する。また、施工後のシートが物理的応力を受けた場合でも裂け、破れの発生を軽減できる。また、330dtex以下であれば、充分な柔軟性を得られ、施工性が向上する。また、交差部の空隙を抑えられ、遮光性も向上する。   The total fineness of the multifilament yarn is preferably 84 to 330 dtex. If it is 84 dtex or more, a firmness will be obtained in a sheet | seat and workability will improve. Moreover, even when the sheet after construction receives physical stress, the occurrence of tearing and tearing can be reduced. Moreover, if it is 330 dtex or less, sufficient softness | flexibility will be acquired and workability will improve. Moreover, the space | gap of an intersection part is suppressed and light-shielding property improves.

前記マルチフィラメント糸の単糸繊度は、2.0dtex〜5.0dtexであることが好ましい。2.0dtex以上であれば、摩擦によるシートの毛羽立ちを軽減できる。また、5.0dtex以下であれば、シートに充分な柔軟性が得られ、施工性が向上する。また、生産性が向上し、経済的でもある。   The single filament fineness of the multifilament yarn is preferably 2.0 dtex to 5.0 dtex. If it is 2.0 dtex or more, fluffing of the sheet due to friction can be reduced. Moreover, if it is 5.0 dtex or less, sufficient softness | flexibility will be obtained for a sheet | seat and workability will improve. Moreover, productivity is improved and it is economical.

前記マルチフィラメント糸は、本発明の目的を阻害しない範囲内であれば、用途に応じて酸化防止剤、光安定剤、紫外線吸収剤、耐侯剤、滑剤、顔料、充填剤、その他の添加剤を含有させることができる。その目的と用途に応じて1種又は2種以上を適宜選択すればよい。   If the multifilament yarn is within the range that does not impair the object of the present invention, an antioxidant, a light stabilizer, an ultraviolet absorber, an antifungal agent, a lubricant, a pigment, a filler, and other additives may be used depending on the application. It can be included. What is necessary is just to select suitably 1 type (s) or 2 or more types according to the objective and use.

本発明の防草シートに用いられる織物は経糸及び緯糸の浮き部T,Tの長さが0.8mm以下(好ましくは0.6mm以下)であり、前記織物に高分子樹脂を付与させることが肝要である。前述した条件を満たしていれば、チガヤ、スギナ等の貫通力の高い植物がシートを貫こうとしても、経糸及び緯糸に高分子樹脂が付与しており、植物が原糸自体を貫通することない。また、経糸及び緯糸の浮き部T,Tの長さが0.8mm以下の状態で樹脂を付与することで、経糸及び緯糸の交差部が固定され、鋭利な芽がシートに触れても、経糸及び緯糸がズレることがなく、貫通を阻止することができる。また、経糸及び緯糸に付与された高分子樹脂により植物との間で摩擦抵抗が得られ、初期貫入抵抗力を高めることができる。それにより、鋭く鋭利な芽を持った貫通力の高い植物がシートを突き破ることを抑制でき、美観維持だけではなく、シート上での作業等において安全性を確保することができる。 The woven fabric used in the weedproof sheet of the present invention has a length of the warp and weft floating portions T A and T B of 0.8 mm or less (preferably 0.6 mm or less), and imparts a polymer resin to the woven fabric. It is important. If the above-mentioned conditions are satisfied, even if a plant with high penetrating power, such as Chigaya or Sugina, tries to penetrate the sheet, a polymer resin is applied to the warp and weft so that the plant does not penetrate the raw yarn itself. . Further, the warp and weft of the floating portion T A, by the length of T B imparts the resin with the following conditions 0.8 mm, is fixed intersections of warp and weft, to touch sharp buds on the sheet The warp and the weft are not displaced, and penetration can be prevented. In addition, the polymer resin applied to the warp and the weft can provide friction resistance with the plant, and can increase the initial penetration resistance. Thereby, it is possible to suppress a plant having high penetrating power having sharp and sharp shoots from breaking through the sheet, and it is possible to ensure safety not only for maintaining the beauty but also for working on the sheet.

前記高分子樹脂としては、特に限定はされないが、例えばポリエステル系樹脂、アクリル系樹脂、酢酸ビニル系などが挙げられる。なかでも、耐久性、難燃性の点でポリエステル系樹脂が好ましく用いられる。   Although it does not specifically limit as said polymer resin, For example, a polyester-type resin, an acrylic resin, a vinyl acetate type etc. are mentioned. Of these, polyester resins are preferably used in terms of durability and flame retardancy.

前記高分子樹脂の付与量は、織物重量に対し1〜5%が好ましい。1%以上であれば、経糸及び緯糸の交差部をより確実に固定でき、また高分子樹脂が原糸を充分に被覆化され、植物に対する耐貫通性が向上する。また5%以下であれば、高分子樹脂が防草シートの柔軟性を阻害することがなく、土壌追従性が良好となる。また、充分な透水性が得られ、土壌に雨水等の浸透を妨げない。   The amount of the polymer resin applied is preferably 1 to 5% based on the weight of the fabric. If it is 1% or more, the intersecting portion of the warp and weft can be more reliably fixed, and the polymer resin is sufficiently coated with the raw yarn, and the penetration resistance to the plant is improved. Moreover, if it is 5% or less, a polymer resin will not inhibit the softness | flexibility of a herbicidal sheet, and soil followability will become favorable. Moreover, sufficient water permeability is obtained, and it does not hinder the penetration of rainwater or the like into the soil.

前記高分子樹脂の付与方法としては、含浸法、スプレー法、コーティング法、グラビア転写法等の従来公知の方法が挙げられる。なかでも、原糸に高分子樹脂を均一に被覆できるという点で含浸法が好適に用いられる。   Examples of the method for applying the polymer resin include conventionally known methods such as an impregnation method, a spray method, a coating method, and a gravure transfer method. Among them, the impregnation method is preferably used in that the raw yarn can be uniformly coated with the polymer resin.

前記高分子樹脂には、本発明の目的を阻害しない範囲内であれば、用途に応じて酸化防止剤、光安定剤、紫外線吸収剤、耐侯剤、滑剤、顔料、充填剤、その他の添加剤を含有させることができる。その目的と用途に応じて1種又は2種以上を適宜選択すればよい。   The polymer resin has an antioxidant, a light stabilizer, an ultraviolet absorber, an antifungal agent, a lubricant, a pigment, a filler, and other additives depending on the application, as long as the purpose of the present invention is not impaired. Can be contained. What is necessary is just to select suitably 1 type (s) or 2 or more types according to the objective and use.

前記織物のカバーファクターは、2000以上であることが好ましく、より好ましくは2300以上であり、特に好ましくは2500以上である。カバーファクターが2000以上であれば、高分子樹脂が付与した原糸が密となり、原糸間の隙間を突き抜けようとする植物に対する抵抗力として作用し、織物に初期貫入抵抗力が向上する。尚、カバーファクターは、本発明が二層以上の織物の場合、浮き部T,Tの長さが前述した条件を満たした一層のカバーファクターにて表す。カバーファクターは、次の式1で定義(算出)される。 The cover factor of the woven fabric is preferably 2000 or more, more preferably 2300 or more, and particularly preferably 2500 or more. If the cover factor is 2000 or more, the raw yarn provided with the polymer resin becomes dense and acts as a resistance against the plant trying to penetrate through the gap between the original yarns, thereby improving the initial penetration resistance to the fabric. In the case where the present invention is a woven fabric having two or more layers, the cover factor is represented by a single layer cover factor in which the lengths of the floating portions T A and T B satisfy the above-described conditions. The cover factor is defined (calculated) by the following formula 1.

[式1]
カバーファクター= A × D 1/2 + B × D 1/2
A : 織物の経糸密度(本/2.54cm)
B : 織物の緯糸密度(本/2.54cm)
: 経糸の総繊度(dtex)
: 緯糸の総繊度(dtex)
[Formula 1]
Cover factor = A x D A 1/2 + B x D B 1/2
A: Warp density of woven fabric (lines / 2.54 cm)
B: Weft density of woven fabric (line / 2.54cm)
D A : Total fineness of warp (dtex)
D B: total fineness of the weft (dtex)

本発明の防草シートの嵩密度は、0.4g/cm以上であることが好ましく、より好ましくは0.5g/cm以上である。0.4g/cm以上であれば、シート内の原糸が密となり、チガヤ、スギナ等の芽の貫通を抑制できる。 The bulk density of the herbicidal sheet of the present invention is preferably 0.4 g / cm 3 or more, more preferably 0.5 g / cm 3 or more. If it is 0.4 g / cm 3 or more, the raw yarn in the sheet becomes dense, and penetration of buds such as chigaya and horsetail can be suppressed.

本発明の防草シートは、チガヤ新芽を想定したチガヤ針2(直径2mm、長さ7cm、先端3cmが円錐状の鉄製軸)による初期貫入抵抗力は、6.0N以上であることが好ましく、より好ましくは8.0N以上であり、特に好ましくは10.0N以上である。6.0N以上であれば、チガヤ、スギナ等の貫通力の高い植物等におけるシートの貫通を抑えることができる。尚、初期貫入抵抗力とは、図2に示すように、対象物がシートを貫通するまでの抵抗値を示す。   The herbicidal sheet of the present invention preferably has an initial penetration resistance by a chigaya needle 2 (diameter 2 mm, length 7 cm, tip 3 cm of a conical iron shaft) assuming a chigaya sprout of 6.0 N or more, More preferably, it is 8.0 N or more, and particularly preferably 10.0 N or more. If it is 6.0 N or more, the penetration of the sheet in plants having a high penetrating power such as chigaya and horsetail can be suppressed. The initial penetration resistance is a resistance value until the object penetrates the sheet as shown in FIG.

本発明の防草シートの色調は、特に限定されるものではないが、光の吸収の大きい色調のものにすることが好ましく、さらには、濃色系又は黒系のような明度がL30以下であることが好ましい。明度L30以下の色調を用いることで遮光性が向上し、植物の繁茂を抑制することができる。シートの色調の付与方法としては、特に限定されるものではなく、原着糸の使用、染色、印刷等が挙げられる。 The color tone of the herbicidal sheet of the present invention is not particularly limited, but is preferably a color tone having a large light absorption. Further, the lightness such as dark color or black color is L * 30. The following is preferable. By using a color tone of lightness L * 30 or less, the light-shielding property is improved, and the overgrowth of plants can be suppressed. The method for imparting the color tone of the sheet is not particularly limited, and examples thereof include use of original yarn, dyeing, and printing.

本発明の防草シートの遮光率は85%以上であることが好ましく、より好ましくは90%以上であり、特に好ましくは95%以上である。遮光率が85%以上であれば、充分な遮光性を得られ、シートの下に群植した植物の繁殖を抑制することができる。   The light shielding rate of the herbicidal sheet of the present invention is preferably 85% or more, more preferably 90% or more, and particularly preferably 95% or more. If the light-shielding rate is 85% or more, sufficient light-shielding properties can be obtained, and propagation of plants planted under the sheet can be suppressed.

本発明の防草シートの剛軟度は30〜100mmであることが好ましく、より好ましくは50〜85mmである。剛軟度が上記範囲とすることにより、充分なハリコシが得られ、施工性や土壌追従性が向上する。   The bending resistance of the weedproof sheet of the present invention is preferably 30 to 100 mm, more preferably 50 to 85 mm. When the bending resistance is in the above range, sufficient elasticity is obtained, and workability and soil followability are improved.

本発明の防草シートの透水係数は1.0×10−3cm/sec以上であることが好ましく、より好ましくは4.0×10−3cm/sec以上である。1.0×10−3cm/sec以上であれば、雨水等の水分がシート表面に長期間留まらせることなく、土壌まで浸透させることができる。 The water permeability coefficient of the herbicidal sheet of the present invention is preferably 1.0 × 10 −3 cm / sec or more, and more preferably 4.0 × 10 −3 cm / sec or more. If it is 1.0 × 10 −3 cm / sec or more, moisture such as rainwater can be infiltrated into the soil without staying on the sheet surface for a long period of time.

以下、本発明について実施例を挙げて説明するが、本発明は必ずしもその実施例に限定されるものではない。
尚、本実施例における測定及び評価は下記内容に基づき行い、その表1に示す。
<測定方法及び評価方法>
1.厚み(mm)
JIS L 1908法に準じて、2kPa荷重を掛けた状態での厚みを測定した。
2.目付(g/m
JIS L 1096法に準じて測定した。
3.浮き部T,Tの長さ(mm)
マイクロスコープ(KEYENCE VH−Z100)を使用して拡大倍率100倍で、各シート表面を観察し、経糸及び緯糸の糸が裏面から浮き出て表面に露出した箇所から裏面に沈む箇所までの部位の長さを測定した。尚、各シートに対してN=10の平均値を算出した。
4.嵩密度(g/cm
計測した厚み及び重量より、嵩密度を次式により算出した。
嵩密度(g/cm)=目付(g/m)/厚み(mm)/1000
5.明度L
分光光度計(Color i5、X−Rite社製)を用い、各シートの明度Lを測定した。尚、各シートに対してN=3の平均値を算出した。
6.剛軟度(mm)
JIS L 1096A法(45°カンチレバー法)に準じて測定した。
7.遮光率(%)
各シートを、JIS L 1055 A法(カーテンの遮光性試験方法 試験片装着前照度100000 lx)に準じて測定した。
8.透水係数(cm/sec)
JIS A 1218(土の透水試験法)に準じて測定した。
9.初期貫入抵抗力(N)
各シートを、ASTM D 4833(ジオテキスタイル(土木用繊維材料)の貫通強度)の測定方法に準じて測定した。貫通治具については、チガヤ針2を使用した。治具の落下速度は300mm/minとした。各シートのN=10の平均値を算出した。図2及び図3に示すように、I期はチガヤ針2の先端がシート表面に接触し、シートを貫通するまでの貫入抵抗力、II期はチガヤ針2がシートを貫通し、先端3cm部分の円錐部での貫入抵抗力、III期はチガヤ針2がシートを貫通し、先端の円錐部を超え、直径2mmの円柱部での貫入抵抗力であり、本評価ではI期の貫入抵抗力を測定し、I期内の最大値を初期貫入抵抗力とした。
10.施工評価
タテ方向の中央に階段形状の高さ10cmの段を設けたタテ300cm×ヨコ300cmの土壌に各シートを敷設した。敷設したシートと階段の段差で生じた空間部分を手で押しつけ、土壌となじませて施工し、段差でのシートの追従性と、施工性を目視にて確認した。
(1)施工性
○ シワ、たわみがなく、施工性が良好である。
△ ほとんどシワ、たわみなく、施工性がやや良好である。
× シワ、たわみが発生し、施工性が不良である。
(2)追従性
○ シートと土壌の間に隙間が見られず、追従性は良好である。
△ シートと土壌の間に少し隙間ができ、追従性はやや良好である。
× シートと土壌の間に広く隙間ができ、追従性は不良である。
EXAMPLES Hereinafter, although an Example is given and demonstrated about this invention, this invention is not necessarily limited to the Example.
In addition, the measurement and evaluation in a present Example are performed based on the following content, and are shown in the Table 1.
<Measurement method and evaluation method>
1. Thickness (mm)
According to JIS L 1908 method, the thickness in the state which applied 2 kPa load was measured.
2. Weight per unit (g / m 2 )
It measured according to JIS L1096 method.
3. Float portion T A, the length of T B (mm)
Using a microscope (KEYENCE VH-Z100), observe the surface of each sheet at a magnification of 100 times, and the length of the part from where the warp and weft yarns emerge from the back and are exposed on the back to where they sink to the back Was measured. An average value of N = 10 was calculated for each sheet.
4). Bulk density (g / cm 3 )
From the measured thickness and weight, the bulk density was calculated by the following equation.
Bulk density (g / cm 3 ) = weight per unit area (g / m 2 ) / thickness (mm) / 1000
5. Lightness L *
The lightness L * of each sheet was measured using a spectrophotometer (Color i5, manufactured by X-Rite). An average value of N = 3 was calculated for each sheet.
6). Flexibility (mm)
The measurement was performed according to the JIS L 1096A method (45 ° cantilever method).
7). Shading rate (%)
Each sheet was measured in accordance with JIS L 1055 A method (curtain light-shielding test method, illuminance before mounting test piece 100000 lx).
8). Hydraulic conductivity (cm / sec)
The measurement was performed according to JIS A 1218 (soil permeability test method).
9. Initial penetration resistance (N)
Each sheet was measured according to the measuring method of ASTM D 4833 (penetration strength of geotextile (textile material for civil engineering)). For the penetration jig, a chigaya needle 2 was used. The dropping speed of the jig was set to 300 mm / min. The average value of N = 10 for each sheet was calculated. As shown in FIGS. 2 and 3, in stage I, the penetration resistance force until the tip of the chigaya needle 2 comes into contact with the surface of the sheet and penetrates the sheet, in stage II, the chigaya needle 2 penetrates the sheet, and the tip 3 cm portion Penetration resistance at the cone part of stage III, in stage III is the penetration resistance force at the cylindrical part with a diameter of 2 mm exceeding the cone part at the tip of the needle 2 passing through the sheet. In this evaluation, the penetration resistance force of stage I Was measured, and the maximum value in stage I was defined as the initial penetration resistance.
10. Construction Evaluation Each sheet was laid on vertical 300 cm × width 300 cm soil in which a step with a height of 10 cm was provided in the center in the vertical direction. The space formed between the laid sheet and the step of the staircase was pressed by hand and applied to the soil, and the followability of the sheet at the step and the workability were confirmed visually.
(1) Workability ○ There are no wrinkles or deflection, and workability is good.
△ Almost no wrinkles or deflection, and workability is slightly good.
× Wrinkles and deflection occur, and workability is poor.
(2) Followability ○ No gap is observed between the sheet and the soil, and the followability is good.
Δ: A small gap is formed between the sheet and the soil, and the followability is slightly good.
X A wide gap is formed between the sheet and the soil, and the followability is poor.

〔実施例1〕
経糸にポリエステル セミダル加工糸(NAN YA PLASTICS CORPORATION製(以下、NAN YA製) 総繊度167dtex、単糸繊度4.6dtex)、緯糸にポリエステル セミダル加工糸(NAN YA製 総繊度167dtex、単糸繊度4.6dtex)を用いて、カバーファクターが2740、経緯の糸の浮き部の長さがT=0.58mm、T=0.31mmの綾織からなる織物を作製した。作製した織物に、高分子樹脂(互応化学工業株式会社製 水溶性ポリエステル樹脂)を含浸法で付与し、170℃×1分の乾燥設備で乾燥させ、付与量が織物重量に対し2.7%である防草シートが得られた。
〔実施例2〕
経糸にポリエステル 黒原着加工糸(NAN YA製 総繊度167dtex、単糸繊度4.6dtex)、緯糸にポリエステル 黒原着加工糸(NAN YA製 総繊度167dtex、単糸繊度4.6dtex)を用いて、カバーファクターが2740、経緯の糸の浮き部の長さがT=0.58mm、T=0.31mmの綾織からなる織物を作製した。作製した織物に、高分子樹脂(互応化学工業株式会社製 水溶性ポリエステル樹脂)を含浸法で付与し、170℃×1分の乾燥設備で乾燥させ、付与量が織物重量に対し2.7%である防草シートが得られた。
〔実施例3〕
経糸にポリエステル 黒原着加工糸(NAN YA製 総繊度167dtex、単糸繊度4.6dtex)、緯糸にポリエステル 黒原着加工糸(NAN YA製 総繊度330dtex、単糸繊度4.6dtex)を用いて、カバーファクターが2162、経緯の糸の浮き部の長さがT=0.60mm、T=0.30mmの平織からなる織物を作製した。作製した織物に、高分子樹脂(互応化学工業株式会社製 水溶性ポリエステル樹脂)を含浸法で付与し、170℃×1分の乾燥設備で乾燥させ、付与量が織物重量に対し2.7%である防草シートが得られた。
〔実施例4〕
実施例2の糸を用いてカバーファクターが2326、経緯の糸の浮き部の長さがT=0.76mm、T=0.34mmの綾織からなる織物を作製した。作製した織物に、高分子樹脂(互応化学工業株式会社製 水溶性ポリエステル樹脂)を含浸法で付与し、170℃×1分の乾燥設備で乾燥させ、付与量が織物重量に対し2.7%である防草シートが得られた。
〔実施例5〕
実施例2の糸を用いてカバーファクターが2740、経緯の糸の浮き部の長さがT=0.58mm、T=0.31mmの両面綾の袋織からなる織物を作製した。作製した織物に、高分子樹脂(互応化学工業株式会社製 水溶性ポリエステル樹脂)を含浸法で付与し、170℃×1分の乾燥設備で乾燥させ、付与量が織物重量に対し2.7%である防草シートが得られた。
〔実施例6〕
実施例2の糸を用いてカバーファクターが2740、経緯の糸の浮き部の長さがT=0.58mm、T=0.31mmの綾織からなる織物を作製した。作製した織物に、高分子樹脂(互応化学工業株式会社製 水溶性ポリエステル樹脂)を含浸法で付与し、170℃×1分の乾燥設備で乾燥させ、付与量が織物重量に対し0.9%である防草シートを得られた。
〔実施例7〕
経糸にポリエステル 黒原着加工糸(NAN YA製 総繊度84dtex、単糸繊度2.3dtex)、緯糸にポリエステル 黒原着加工糸(NAN YA製 総繊度167dtex、単糸繊度4.6dtex)を用いて、カバーファクターが3426、経緯の糸の浮き部の長さがT=0.58mm、T=0.16mmの綾織からなる織物を作製した。作製した織物に、高分子樹脂(互応化学工業株式会社製 水溶性ポリエステル樹脂)を含浸法で付与し、170℃×1分の乾燥設備で乾燥させ、付与量が織物重量に対し2.7%である防草シートが得られた。
〔比較例1〕
実施例6の糸を用いて、カバーファクターが2704、経緯の糸の浮き部の長さがT=0.98mm、T=0.23mmの7枚朱子織からなる織物を作製した。作製した織物に、高分子樹脂(互応化学工業株式会社製 水溶性ポリエステル樹脂)を含浸法で付与し、170℃×1分の乾燥設備で乾燥させ、付与量が織物重量に対し2.7%である防草シートが得られた。
〔比較例2〕
実施例6の糸を用いて、カバーファクターが2704、経緯の糸の浮き部の長さがT=0.98mm、T=0.23mmの両面7枚朱子の経二重織からなる織物を作製した。作製した織物に、高分子樹脂(互応化学工業株式会社製 水溶性ポリエステル樹脂)を含浸法で付与し、170℃×1分の乾燥設備で乾燥させ、付与量が織物重量に対し2.7%である防草シートが得られた。
〔比較例3〕
織成した織物に高分子樹脂を付与しなかった以外は実施例2と同様にして、防草シートが得られた。
[Example 1]
Polyester semi-dull processed yarn (manufactured by NAN YA PLASTICS CORPORATION (hereinafter referred to as NAN YA)) total fineness 167 dtex, single yarn fineness 4.6 dtex) and polyester semi-dull processed yarn (NAN YA total fineness 167 dtex, single yarn fineness 4. 6 dtex), a woven fabric having a twill weave having a cover factor of 2740, the length of the floating portion of the weft yarn T A = 0.58 mm, and T B = 0.31 mm was produced. A polymer resin (water-soluble polyester resin manufactured by Kyoyo Chemical Industry Co., Ltd.) is applied to the produced fabric by an impregnation method, and dried with a drying facility at 170 ° C. for 1 minute. A herbicidal sheet was obtained.
[Example 2]
Cover with polyester black original processed yarn (NAN YA total fineness 167 dtex, single yarn fineness 4.6 dtex) for warp and polyester black original processed yarn (NAN YA total fineness 167 dtex, single yarn fineness 4.6 dtex) for weft A woven fabric made of twill having a factor of 2740 and the length of the floating portion of the warp yarn as T A = 0.58 mm and T B = 0.31 mm was produced. A polymer resin (water-soluble polyester resin manufactured by Kyoyo Chemical Industry Co., Ltd.) is applied to the produced fabric by an impregnation method, and dried with a drying facility at 170 ° C. for 1 minute. A herbicidal sheet was obtained.
Example 3
Cover using polyester black original processed yarn (NAN YA total fineness 167 dtex, single yarn fineness 4.6 dtex) for warp and polyester black original processed yarn (NANYA total fineness 330 dtex, single yarn fineness 4.6 dtex) for weft. A woven fabric made of plain weave having a factor of 2162 and the length of the floating portion of the warp yarn as T A = 0.60 mm and T B = 0.30 mm was produced. A polymer resin (water-soluble polyester resin manufactured by Kyoyo Chemical Industry Co., Ltd.) is applied to the produced woven fabric by an impregnation method and dried with a drying facility at 170 ° C. for 1 minute. The applied amount is 2.7% based on the weight of the woven fabric. A herbicidal sheet was obtained.
Example 4
Using the yarn of Example 2, a woven fabric made of twill having a cover factor of 2326, the length of the floating portion of the warp yarn being T A = 0.76 mm, and T B = 0.34 mm was produced. A polymer resin (water-soluble polyester resin manufactured by Kyoyo Chemical Industry Co., Ltd.) is applied to the produced fabric by an impregnation method, and dried with a drying facility at 170 ° C. for 1 minute. A herbicidal sheet was obtained.
Example 5
Using the yarn of Example 2, a woven fabric made of double-sided twill woven with a cover factor of 2740, the length of the floating portion of the warp yarn as T A = 0.58 mm, and T B = 0.31 mm was produced. A polymer resin (water-soluble polyester resin manufactured by Kyoyo Chemical Industry Co., Ltd.) is applied to the produced fabric by an impregnation method, and dried with a drying facility at 170 ° C. for 1 minute. A herbicidal sheet was obtained.
Example 6
Using the yarn of Example 2, a woven fabric made of twill having a cover factor of 2740, the length of the floating portion of the warp yarn being T A = 0.58 mm, and T B = 0.31 mm was produced. A polymer resin (water-soluble polyester resin manufactured by Kyoyo Chemical Industry Co., Ltd.) is applied to the produced fabric by an impregnation method and dried with a drying facility at 170 ° C. for 1 minute, and the applied amount is 0.9% based on the weight of the fabric. A weedproof sheet was obtained.
Example 7
Cover with polyester black original yarn (WAN YA total fineness 84 dtex, single yarn fineness 2.3 dtex) for warp yarn and polyester black original yarn processed yarn (NANYA total fineness 167 dtex, single yarn fineness 4.6 dtex) for weft A woven fabric made of twill having a factor of 3426 and lengths of floating portions of warp yarns T A = 0.58 mm and T B = 0.16 mm was produced. A polymer resin (water-soluble polyester resin manufactured by Kyoyo Chemical Industry Co., Ltd.) is applied to the produced fabric by an impregnation method, and dried with a drying facility at 170 ° C. for 1 minute. A herbicidal sheet was obtained.
[Comparative Example 1]
Using the yarn of Example 6, a woven fabric made of seven satin weaves having a cover factor of 2704, the length of the floating portion of the warp yarn as T A = 0.98 mm, and T B = 0.23 mm was produced. A polymer resin (water-soluble polyester resin manufactured by Kyoyo Chemical Industry Co., Ltd.) is applied to the produced fabric by an impregnation method, and dried with a drying facility at 170 ° C. for 1 minute. A herbicidal sheet was obtained.
[Comparative Example 2]
Using the yarn of Example 6, a woven fabric consisting of 7 double satin warp double weaves with a cover factor of 2704, the length of the warp yarn floating portion T A = 0.98 mm, and T B = 0.23 mm Was made. A polymer resin (water-soluble polyester resin manufactured by Kyoyo Chemical Industry Co., Ltd.) is applied to the produced fabric by an impregnation method, and dried with a drying facility at 170 ° C. for 1 minute. A herbicidal sheet was obtained.
[Comparative Example 3]
A herbicidal sheet was obtained in the same manner as in Example 2 except that the polymer resin was not applied to the woven fabric.

1 防草シート
2 チガヤ針
経糸の浮き部
緯糸の浮き部
1 Anti-weed sheet 2 Imperata needle T A separated portion of the floating portion T B weft warp

Claims (5)

経糸及び緯糸がマルチフィラメント糸を用いて構成される織物の少なくとも片面に高分子樹脂が付与され、前記経糸及び前記緯糸の浮き部の長さが0.8mm以下であることを特徴とする防草シート。   A weedproof, wherein a warp and a weft are made of a multifilament yarn, a polymer resin is applied to at least one surface of the woven fabric, and the length of the floating portion of the warp and the weft is 0.8 mm or less. Sheet. 前記高分子樹脂の付与量が、織物重量に対し1〜5%であることを特徴とする請求項1に記載の防草シート。   The weedproof sheet according to claim 1, wherein the amount of the polymer resin applied is 1 to 5% based on the weight of the fabric. 前記織物のカバーファクターが2000以上であることを特徴とする請求項1又は2に記載の防草シート。   The weedproof sheet according to claim 1 or 2, wherein a cover factor of the fabric is 2000 or more. 前記防草シートの嵩密度が0.4g/cm以上であることを特徴とする請求項1〜3のいずれかに記載の防草シート。 Anti-weed sheet according to claim 1, bulk density of the weed sheet is characterized in that it is 0.4 g / cm 3 or more. 前記防草シートに対する直径2mm、長さ7cm、かつ先端3cm部分が円錐状の鉄製軸による初期貫入抵抗力が6.0N以上であることを特徴とする請求項1〜4いずれかに記載の防草シート。   5. The anti-weeding device according to claim 1, wherein an initial penetration resistance force by a steel shaft having a diameter of 2 mm, a length of 7 cm, and a tip of 3 cm with respect to the herbicidal sheet is 6.0 N or more. Grass sheet.
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019118324A (en) * 2018-01-09 2019-07-22 小松マテーレ株式会社 Plant cure sheet and plant cure sheet laying device using the same
JP2019143278A (en) * 2018-02-15 2019-08-29 セーレン株式会社 Fabric
JP7066156B1 (en) * 2021-10-04 2022-05-13 東陽織物株式会社 Light-shielding fabric
JP7424847B2 (en) 2020-01-31 2024-01-30 セーレン株式会社 Weed control sheet and method for manufacturing the weed control sheet

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019118324A (en) * 2018-01-09 2019-07-22 小松マテーレ株式会社 Plant cure sheet and plant cure sheet laying device using the same
JP7004577B2 (en) 2018-01-09 2022-01-21 小松マテーレ株式会社 Plant curing sheet and plant curing sheet laying device using it
JP2019143278A (en) * 2018-02-15 2019-08-29 セーレン株式会社 Fabric
JP7424847B2 (en) 2020-01-31 2024-01-30 セーレン株式会社 Weed control sheet and method for manufacturing the weed control sheet
JP7066156B1 (en) * 2021-10-04 2022-05-13 東陽織物株式会社 Light-shielding fabric

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