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JP7440846B2 - How to lay a weed control sheet - Google Patents
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JP7440846B2 - How to lay a weed control sheet - Google Patents

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JP7440846B2
JP7440846B2 JP2020009257A JP2020009257A JP7440846B2 JP 7440846 B2 JP7440846 B2 JP 7440846B2 JP 2020009257 A JP2020009257 A JP 2020009257A JP 2020009257 A JP2020009257 A JP 2020009257A JP 7440846 B2 JP7440846 B2 JP 7440846B2
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weed control
sheet
control sheet
laying
release sheet
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JP2021114918A (en
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俊治 田中
顕 平泉
翔平 長野
孝二 江崎
秀紀 金泥
智司 増田
正俊 杉原
浩司 谷口
一広 松本
正典 溝上
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Unitika Ltd
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Description

本発明は、地面に敷設する防草シートの敷設方法に関し、特に地面に敷設する際の作業性に優れた防草シートの敷設方法に関するものである。 The present invention relates to a method of laying a weed control sheet on the ground, and more particularly to a method of laying a weed control sheet with excellent workability when laying it on the ground.

従来より、防草シートを広い範囲の地面に敷設する際、長尺の防草シートの複数を、その長尺端部を重ね合わせ幅方向に繋ぎ合わせて敷設することが行われている。この場合、重ね合わされた長尺端部がずれないように、重ね合わせた箇所をアンカーピン等の固定具で固定することが行われている(特許文献1の請求項4及び特許文献2の請求項5)。しかしながら、アンカーピン等による固定は、アンカーピン等の孔を起点として、防草シートが裂けることがあった。防草シートが裂けると、その箇所から雑草が繁殖しやすくなる。 BACKGROUND ART Conventionally, when laying weed control sheets over a wide range of ground, a plurality of long weed control sheets have been laid by overlapping their long ends and connecting them in the width direction. In this case, in order to prevent the overlapped long ends from shifting, the overlapped portions are fixed with a fixing device such as an anchor pin (claim 4 of Patent Document 1 and claim 2 of Patent Document 2). Item 5). However, when fixing with anchor pins or the like, the weed control sheet may tear starting from the holes of the anchor pins or the like. When the weed control sheet is torn, weeds can easily grow from that area.

このため、アンカーピン等の固定具による固定に代えて、ヒートガンやバーナー等の溶着機を用いて、重ね合わせた長尺端部を溶着することも行われている(特許文献3の請求項3)。しかしながら、ヒートガン等の溶着機を用いる方法は、現場にて火事が発生する危険があり、好ましいものではない。 For this reason, instead of fixing with a fixing device such as an anchor pin, a welding machine such as a heat gun or a burner is used to weld the overlapped long ends (Claim 3 of Patent Document 3). ). However, the method of using a welding machine such as a heat gun is not preferable because there is a risk of a fire occurring at the site.

特開2001-37353号公報Japanese Patent Application Publication No. 2001-37353 特開2014-125837号公報Japanese Patent Application Publication No. 2014-125837 特開2018-108057号公報Unexamined Japanese Patent Publication No. 2018-108057

本発明の課題は、アンカーピン等の固定具やヒートガン等の溶着機を用いることなく、簡便に長尺端部を固定しうる防草シートの敷設方法を提供することにある。 An object of the present invention is to provide a method for laying a weed control sheet in which the long ends can be easily fixed without using a fixing device such as an anchor pin or a welding machine such as a heat gun.

すなわち、本発明は、既設の防草シートの端部と、新設の防草シートの端部とを重ね合わせて、防草シートを敷設する方法において、前記新設の防草シートとして、表面側から、アスファルト層、粘着剤層及び離型シートの順に積層一体化されてなる長尺の防草シートであって、該離型シートは非通気性シートよりなり、裏面側全面に積層されていると共に、該離型シートの長尺端縁の内側に該長尺端縁と平行に切断線が設けられてなる防草シートを用い、前記離型シートに設けられた前記切断線より外側の前記離型シートを取り外して前記粘着剤層を露出させると共に、前記切断線より内側の前記離型シートは取り外さずに前記粘着剤層を露出させずに、露出した前記粘着剤層と前記既設の防草シートの端部とを重ね合わせることを特徴とする防草シートの敷設方法に関するものである。 That is, the present invention provides a method of laying a weed control sheet by overlapping the edge of an existing weed control sheet and the edge of a newly installed weed control sheet, in which the newly installed weed control sheet is laid from the front side. , a long weed control sheet formed by laminating and integrating an asphalt layer, an adhesive layer, and a release sheet in this order, the release sheet being made of an air-impermeable sheet and laminated on the entire back side. , using a weed control sheet in which a cutting line is provided on the inside of the long edge of the release sheet in parallel with the long edge; While removing the mold sheet to expose the adhesive layer, the mold release sheet inside the cutting line is not removed to expose the adhesive layer, and the exposed adhesive layer and the existing weed control layer are removed. The present invention relates to a method for laying a weed control sheet, which is characterized by overlapping the ends of the sheets .

本発明に用いる防草シートは、その表面側がアスファルト層で形成されている。アスファルト層は、アスファルトを含む層である。すなわち、アスファルトのみで形成されている層だけでなく、アスファルトとその他の材料で形成されているものを含んでいる。たとえば、特許第6360452号公報に記載されているような、アスファルトを二枚の不織布で挟んだものや、特許第6381485号公報に記載されているような、不織布にアスファルトとワックス等の離型剤を含浸させたものもアスファルト層である。なお、アスファルト層に用いられるアスファルトとしては、従来公知の石油アスファルト又は天然アスファルトを用いることができる。アスファルト層の表面には、砂利や軽石等の石を載せておいてもよい。かかるアスファルト層は遮光性が高く、防草効果を発揮するものである。 The weed control sheet used in the present invention has an asphalt layer formed on its surface side. The asphalt layer is a layer containing asphalt. That is, it includes not only layers formed only of asphalt, but also layers formed of asphalt and other materials. For example, as described in Japanese Patent No. 6360452, asphalt is sandwiched between two sheets of nonwoven fabric, or asphalt and a release agent such as wax are added to a nonwoven fabric as described in Japanese Patent No. 6381485. The layer impregnated with is also an asphalt layer. Note that as the asphalt used for the asphalt layer, conventionally known petroleum asphalt or natural asphalt can be used. Stones such as gravel or pumice may be placed on the surface of the asphalt layer. Such an asphalt layer has a high light-shielding property and exhibits a weed-preventing effect.

アスファルト層の質量は任意であるが、一般的には100~2000g/m2の範囲内であり、700~2000g/m2程度の高質量であるのが好ましい。高質量であるほど、アスファルト層の裏面に設けられている粘着剤層の粘着力が高くなるからである。また、アスファルト層の上に砂利や軽石等の石を載せて、さらに高質量にすると、さらに粘着力が高くなる。 Although the mass of the asphalt layer is arbitrary, it is generally in the range of 100 to 2000 g/m 2 , and preferably as high as 700 to 2000 g/m 2 . This is because the higher the mass, the higher the adhesive force of the adhesive layer provided on the back surface of the asphalt layer. Furthermore, if stones such as gravel or pumice are placed on top of the asphalt layer to increase the mass, the adhesive strength will further increase.

アスファルト層の裏面には、粘着剤層が設けられている。粘着剤層を形成している粘着剤としては、従来公知のものが用いられ、たとえばアクリル系粘着剤が用いられる。粘着剤層の露出面(アスファルト層側の反対面)には、離型シートが貼着されている。離型シートとしては従来公知のものが用いられ、たとえば合成樹脂製フィルムや離型紙が用いられる。本発明に係る防草シートは、表面側から、アスファルト層、粘着剤層及び離型シートの順に積層一体化されてなり、長尺となっている。 An adhesive layer is provided on the back side of the asphalt layer. As the adhesive forming the adhesive layer, a conventionally known adhesive is used, such as an acrylic adhesive. A release sheet is attached to the exposed surface of the adhesive layer (the surface opposite to the asphalt layer side). As the release sheet, a conventionally known release sheet may be used, such as a synthetic resin film or release paper. The weed control sheet according to the present invention is a long sheet in which an asphalt layer, an adhesive layer, and a release sheet are laminated and integrated in this order from the front side.

本発明に用いる防草シートの裏面全面に貼着されている離型シート2は、片方の長尺端縁1の内側又は両方の長尺端縁1,1の内側に、長尺端縁1と平行に切断線3が設けられている。離型シート2は、合成樹脂製フィルムの如き非通気性シートよりなる。切断線3は、離型シート2を切断しやすくするために設けられているものであり、たとえば、ミシン目で形成されていてもよいし、スリットで形成されていてもよい。この切断線3は、長尺端縁1の内側5~15cmの箇所に設けられているのが好ましい。5cm未満になると、既設の防草シートとの重ね合わせ部位の面積が小さく、重ね合わせ部位がずれる傾向が生じる。また、15cmを超えて重ね合わせると、重ね合わせ部位の面積が大きくなりすぎ、防草シートの敷設面積が小さくなる傾向が生じる。 The release sheet 2 attached to the entire back surface of the weed control sheet used in the present invention is attached to the inside of one long edge 1 or the inside of both long edges 1, 1. A cutting line 3 is provided parallel to. The release sheet 2 is made of an air-impermeable sheet such as a synthetic resin film. The cutting line 3 is provided to facilitate cutting of the release sheet 2, and may be formed as a perforation or a slit, for example. This cutting line 3 is preferably provided at a location 5 to 15 cm inside the long end edge 1. If it is less than 5 cm, the area of the overlapped part with the existing weed control sheet will be small, and the overlapped part will tend to shift. Moreover, if they are overlapped by more than 15 cm, the area of the overlapped portion becomes too large, and the area where the weed control sheet is laid tends to become small.

本発明に用いる防草シートは、既設の防草シートに対し以下のようにして敷設される。本発明に用いる防草シートは、一般的に巻回された巻物の状態で供給されるので、防草シートを巻き戻しながら、離型シート2の切断線3から長尺端縁1側(外側)を取り除く。そして、切断線3から長尺端縁1までの部位において、粘着剤層を露出させる。そして、既設の防草シートの端部と露出した粘着剤層を重ね合わせて、貼着する。これを順次行うことにより、広い範囲の地面を防草シートで覆うことができる。なお、離型シート2の切断線3から長尺端縁1側(外側)を取り除かずに、この外側を内側に折り曲げて取り外し、粘着剤層を露出させ、既設の防草シートの端部と重ね合わせてもよい。離型シート2の外側を取り除かない場合、施工現場でゴミ(離型シート1の外側)が発生しないため、好ましいものである。 The weed control sheet used in the present invention is laid on an existing weed control sheet in the following manner. The weed control sheet used in the present invention is generally supplied in the form of a wound roll, so while unwinding the weed control sheet, from the cutting line 3 of the release sheet 2 to the long edge 1 side (outside side) ). Then, the adhesive layer is exposed in a region from the cutting line 3 to the elongated edge 1. Then, the end of the existing weed control sheet and the exposed adhesive layer are overlapped and pasted. By doing this one after another, a wide area of the ground can be covered with the weed control sheet. In addition, without removing the long edge 1 side (outside) from the cutting line 3 of the release sheet 2, fold this outside inward and remove it, exposing the adhesive layer, and attaching it to the edge of the existing weed control sheet. May be overlapped. If the outside of the release sheet 2 is not removed, it is preferable because no dust (outside of the release sheet 1) is generated at the construction site.

上述した方法において、切断線3の内側に存在する離型シート2は、取り除かない。離型シート2が合成樹脂製フィルムの如き非通気性シートであ、離型シート2が地面と当接していることになるので大気中の二酸化炭素が地面に供給されにくく、雑草の繁殖がより抑制される。 In the method described above, the release sheet 2 existing inside the cutting line 3 is not removed. The release sheet 2 is a non-breathable sheet such as a synthetic resin film, and because the release sheet 2 is in contact with the ground, it is difficult for carbon dioxide in the atmosphere to be supplied to the ground, which prevents weeds from breeding. More restrained.

本発明に用いる防草シートはアスファルト層を備えており、比較的高質量であるため、既設の防草シートと新設の防草シートとを、その長尺端部で重ね合わせて押圧するだけで、粘着剤層によって強く貼着し、ずれにくくなる。したがって、複数の防草シートを繋ぎ合わせて、広い地面の範囲に亙って防草シートを敷設する作業が簡便になるという効果を奏する。さらに、敷設した防草シートの裏面には非通気性の離型シートが残存しているので、大気中の二酸化炭素が地面に供給されにくく、雑草の繁殖がより抑制されるという効果を奏する。 The weed control sheet used in the present invention is equipped with an asphalt layer and has a relatively high mass, so simply overlap the existing weed control sheet and the new weed control sheet at their long ends and press them together. The adhesive layer ensures strong adhesion and prevents it from slipping. Therefore, the work of connecting a plurality of weed control sheets together and laying the weed control sheets over a wide range of ground becomes easier. Furthermore, since the non-breathable release sheet remains on the back side of the laid weed control sheet, it is difficult for carbon dioxide in the atmosphere to be supplied to the ground, which has the effect of further suppressing the proliferation of weeds.

本発明に用いる防草シートの一例を示す表面図である。FIG. 1 is a surface view showing an example of a weed control sheet used in the present invention. 図1の防草シートの裏面図である。2 is a back view of the weed control sheet of FIG. 1. FIG.

1 長尺端縁
2 離型シート
3 切断線
1 Long edge 2 Release sheet 3 Cutting line

Claims (5)

既設の防草シートの端部と、新設の防草シートの端部とを重ね合わせて、防草シートを敷設する方法において、
前記新設の防草シートとして、表面側から、アスファルト層、粘着剤層及び離型シートの順に積層一体化されてなる長尺の防草シートであって、該離型シートは非通気性シートよりなり、裏面側全面に積層されていると共に、該離型シートの長尺端縁の内側に該長尺端縁と平行に切断線が設けられてなる防草シートを用い、
前記離型シートに設けられた前記切断線より外側の前記離型シートを取り外して前記粘着剤層を露出させると共に、前記切断線より内側の前記離型シートは取り外さずに前記粘着剤層を露出させずに、
露出した前記粘着剤層と前記既設の防草シートの端部とを重ね合わせることを特徴とする防草シートの敷設方法。
In a method of laying a weed control sheet by overlapping the edge of an existing weed control sheet and the edge of a newly installed weed control sheet,
The newly installed weed control sheet is a long weed control sheet formed by laminating and integrating an asphalt layer, an adhesive layer, and a release sheet in this order from the surface side, and the release sheet is more durable than a non-air permeable sheet. using a weed control sheet which is laminated on the entire back side and has a cutting line provided inside the long edge of the release sheet parallel to the long edge,
removing the release sheet outside the cutting line provided on the release sheet to expose the adhesive layer, and exposing the adhesive layer without removing the release sheet inside the cutting line; without letting
A method for laying a weed control sheet, comprising overlapping the exposed adhesive layer and an end of the existing weed control sheet.
切断線が離型シートの長尺端縁の両内側に設けられてなる請求項1記載の防草シートの敷設方法 2. The method for laying a weed control sheet according to claim 1, wherein the cutting lines are provided on both inner sides of the long edge of the release sheet. 切断線は、長尺端縁から5~15cm内側に設けられてなる請求項1記載の防草シートの敷設方法 The method for laying a weed control sheet according to claim 1, wherein the cutting line is provided 5 to 15 cm inside from the long edge. 切断線は、ミシン目又はスリットである請求項1記載の防草シートの敷設方法 2. The method for laying a weed control sheet according to claim 1, wherein the cutting line is a perforation or a slit. 離型シートは、合成樹脂製フィルムである請求項1記載の防草シートの敷設方法 2. The method for laying a weed control sheet according to claim 1, wherein the release sheet is a synthetic resin film.
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JP2004033032A (en) 2002-06-28 2004-02-05 Meishin Denki Kk Weed-preventing sheet and method for applying the same
JP2004097203A (en) 2002-07-18 2004-04-02 Earth Chem Corp Ltd Pest adhesive capture material
JP2005034027A (en) 2003-07-18 2005-02-10 Sho Bond Constr Co Ltd Herbicidal material and method
JP2006025667A (en) 2004-07-14 2006-02-02 Sekisui Film Kk Protective film for plant cultivation and method for producing the same
JP2009219446A (en) 2008-03-17 2009-10-01 Nisshin Kogyo Co Ltd Weed proofing structure of ground surface and method for laying weed proofing sheet to ground surface
JP2011122381A (en) 2009-12-11 2011-06-23 G-Techno Co Ltd Method of construction of weed-preventive structure
JP2014031698A (en) 2012-07-31 2014-02-20 Urethan Giken Kogyo Kk Weed growth prevention complex method
JP2018000144A (en) 2016-07-06 2018-01-11 大協技研工業株式会社 Tape for invasion prevention and repellent of harmful insect
JP2019000030A (en) 2017-06-14 2019-01-10 七王工業株式会社 Herbicidal tape, method of use thereof and kit for herbicidal protection

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