JP2020180499A - Ventilating and sealing composite material for civil engineering - Google Patents

Ventilating and sealing composite material for civil engineering Download PDF

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JP2020180499A
JP2020180499A JP2019084705A JP2019084705A JP2020180499A JP 2020180499 A JP2020180499 A JP 2020180499A JP 2019084705 A JP2019084705 A JP 2019084705A JP 2019084705 A JP2019084705 A JP 2019084705A JP 2020180499 A JP2020180499 A JP 2020180499A
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sheet portion
impermeable sheet
impermeable
civil engineering
composite material
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JP7215314B2 (en
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松下　正樹
Masaki Matsushita
正樹 松下
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Toyobo Co Ltd
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Abstract

To provide a ventilating and sealing composite material for civil engineering that has a high ventilation capability while maintaining a sealing capability, and that easily fits onto an object to be covered.SOLUTION: The ventilating and sealing composite material for civil engineering has a base material 40, a first sealing sheet 10, and a second sealing sheet 20. The first sealing sheet 10 and the second sealing sheet 20 overlap in a range of 10 to 90% of the area of at least one of the first sealing sheet 10 and the second sealing sheet 20. One surface of the first sealing sheet 10 is provided with a first sealing sheet one surface joint region 11 with 50% or less of the area of the first sealing sheet. In the first sealing sheet one surface joint region 11, the first sealing sheet 10 is joined with the base material 40 or the second sealing sheet 20.SELECTED DRAWING: Figure 1

Description

本発明は、土木用に使用される通気遮水複合材に関するものである。 The present invention relates to a ventilated, impermeable composite material used for civil engineering.

河川港湾施設や道路等の建設、その他様々な土木工事において、法面等の土砂等を覆って浸食や土砂の流出を防ぐための土木シートが用いられている。土木シートは、雨水などの水分の侵入を防ぐ必要があるため、遮水性能を有することが求められる。また、土木シートと被覆物との間にガスの層ができたり、被覆物内の圧力が高まって被覆物及び土木シートが破損したりしないように、土木シートは通気性を有することも必要である。さらに、土木シートが適用される被覆面は凹凸を有するなど現場に応じて様々な形状であるため、土木シートは多様な形状に追随できる柔軟性を必要とする。 In the construction of river port facilities and roads, and various other civil engineering works, civil engineering sheets are used to cover the earth and sand on slopes and prevent erosion and outflow of earth and sand. Since it is necessary to prevent the intrusion of moisture such as rainwater from the civil engineering sheet, it is required to have an impermeable performance. It is also necessary for the civil engineering sheet to be breathable so that a gas layer is not formed between the civil engineering sheet and the covering, and the pressure inside the covering does not increase and the covering and the civil engineering sheet are damaged. is there. Further, since the covering surface to which the civil engineering sheet is applied has various shapes depending on the site such as having irregularities, the civil engineering sheet needs to have flexibility to follow various shapes.

護岸構築用に利用される遮水構造としては、例えば特許文献１に、保護マットと遮水シートとがサンドイッチ構造を有し、安定した状態で法面に支持される遮水構造が開示されている。しかし、この遮水構造は通気性が考慮されていない。また、特許文献２には、河川港湾施設等の各種護岸において、堤体の浸食や崩壊を防止する目的で法面をコンクリートで被覆する際に、コンクリート下の堤土表面に敷き詰められ、遮水シートを通して堤体内の空気（ガス）の排出が可能な遮水シートが開示されている。この遮水シートは、保護層とガス透過性防水シートからなり、遮水シートとしての通気性はガス透過性防水シートの透湿度に依存しているため、それ以上の通気性は期待できない。 As a water-impervious structure used for revetment construction, for example, Patent Document 1 discloses a water-impervious structure in which a protective mat and a water-impervious sheet have a sandwich structure and are supported on a slope in a stable state. There is. However, this impermeable structure does not take breathability into consideration. Further, in Patent Document 2, when the slope is covered with concrete for the purpose of preventing erosion or collapse of the embankment body in various revetments such as river port facilities, it is spread on the surface of the embankment under the concrete to block water. An impermeable sheet capable of discharging air (gas) in the embankment through the sheet is disclosed. This water-impervious sheet is composed of a protective layer and a gas-permeable waterproof sheet, and since the air permeability of the water-impervious sheet depends on the moisture permeability of the gas-permeable waterproof sheet, no further air permeability can be expected.

特開２００７−１２６９０２号公報JP-A-2007-126902 特開２００８−２６１２０４号公報Japanese Unexamined Patent Publication No. 2008-261204

本発明は上記事情に鑑みてなされたものであり、遮水性を確保しつつ通気性を有し、さらに被覆物への追随が容易な土木用通気遮水複合材を提供することを目的とする。 The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a ventilation and water-impervious composite material for civil engineering, which has air permeability while ensuring water insulation and can easily follow a covering. ..

本発明者は、上記課題を解決するために鋭意研究を重ねた結果、本発明を完成した。本発明の土木用通気遮水複合材は、基材と第１遮水シート部と第２遮水シート部とを有しており、第１遮水シート部と第２遮水シート部は、第１遮水シート部と第２遮水シート部のうち少なくとも一方の面積の１０％〜９０％の範囲で重なり合っており、第１遮水シート部の一方面に第１遮水シート部の面積の５０％以下の一方面接合領域（以下、「第１遮水シート部一方面接合領域」と称する）が設けられており、第１遮水シート部は第１遮水シート部一方面接合領域において、基材又は第２遮水シート部と接合していることに要旨を有する。 The present inventor has completed the present invention as a result of repeated diligent research in order to solve the above problems. The ventilation impermeable composite material for civil engineering of the present invention has a base material, a first impermeable sheet portion, and a second impermeable sheet portion, and the first impermeable sheet portion and the second impermeable sheet portion are The area of at least one of the first impermeable sheet portion and the second impermeable sheet portion overlaps in a range of 10% to 90%, and the area of the first impermeable sheet portion is on one surface of the first impermeable sheet portion. A one-sided joint region of 50% or less of the above (hereinafter referred to as "first impermeable sheet portion one-sided joint region") is provided, and the first impermeable sheet portion is a first impermeable sheet portion one-sided joint region. The main point is that it is joined to the base material or the second impermeable sheet portion.

第１遮水シート部及び第２遮水シート部が、それぞれ３００ｍｍＨ2Ｏ以上の耐水度（ＪＩＳ Ｌ−１０９２ Ａ法）と２０００ｇ／ｍ2・２４ｈｒ以下の透湿度（ＪＩＳ Ｌ−１０９９ Ａ−１法）を有することが好ましい。 The first water-barrier sheet portion and the second water-barrier sheet portion, respectively 300MmH 2 O or more water resistance (JIS L-1092 A method) and 2000 g / m 2 · 24 hr or less moisture permeability (JIS L-1099 A-1 The method) is preferable.

第２遮水シート部の一方面に第２遮水シート部の面積の５０％以下の一方面接合領域（以下、「第２遮水シート部一方面接合領域」と称する）が設けられており、第２遮水シート部は第２遮水シート部一方面接合領域において、基材又は第１遮水シート部と接合していることが好ましい。 A one-sided joint region (hereinafter, referred to as "second impermeable sheet portion one-sided joint region") of 50% or less of the area of the second impermeable sheet portion is provided on one surface of the second impermeable sheet portion. It is preferable that the second impermeable sheet portion is bonded to the base material or the first impermeable sheet portion in the one-sided bonding region of the second impermeable sheet portion.

さらに保護層を有しており、第１遮水シート部の他方面に第１遮水シート部の面積の５０％以下の他方面接合領域（以下、「第１遮水シート部他方面接合領域」と称する）が設けられており、第１遮水シート部は第１遮水シート部他方面接合領域において、保護層又は第２遮水シート部と接合していることが好ましい。 Further, it has a protective layer, and on the other surface of the first impermeable sheet portion, a other surface bonding region of 50% or less of the area of the first impermeable sheet portion (hereinafter, "the other surface bonding region of the first impermeable sheet portion"). It is preferable that the first impermeable sheet portion is joined to the protective layer or the second impermeable sheet portion in the other surface bonding region of the first impermeable sheet portion.

第２遮水シート部の他方面に第２遮水シート部の面積の５０％以下の他方面接合領域（以下、「第２遮水シート部他方面接合領域」と称する）が設けられており、第２遮水シート部は第２遮水シート部他方面接合領域において、保護層又は第１遮水シート部と接合していることが好ましい。 On the other surface of the second impermeable sheet portion, a other surface joining region (hereinafter, referred to as "second impermeable sheet portion other surface joining region") of 50% or less of the area of the second impermeable sheet portion is provided. It is preferable that the second impermeable sheet portion is joined to the protective layer or the first impermeable sheet portion in the other surface joining region of the second impermeable sheet portion.

第１遮水シート部一方面接合領域、第１遮水シート部他方面接合領域、第２遮水シート部一方面接合領域及び第２遮水シート部他方面接合領域の少なくとも一つは複数の接合部が間隔を開けて設けられていることが好ましい。 At least one of the first impermeable sheet portion one-sided joint region, the first impermeable sheet portion other-sided joint region, the second impermeable sheet portion one-sided joint region, and the second impermeable sheet portion other-sided joint region is plural. It is preferable that the joints are provided at intervals.

基材が織布又は不織布からなることが好ましい。 The base material is preferably made of woven fabric or non-woven fabric.

保護層が基材と同じ材料からなることが好ましい。 It is preferable that the protective layer is made of the same material as the base material.

本発明の土木用通気遮水複合材は、遮水性を確保しつつ通気性を有し、さらに被覆物への追随が容易であるため、被覆物の形状を制限せずに様々な用途に使用することができる。 The ventilation and impermeable composite material for civil engineering of the present invention has air permeability while ensuring water impermeability, and can easily follow the coating, so that it can be used for various purposes without limiting the shape of the coating. can do.

本発明の一実施形態に係る土木用通気遮水複合材の平面図を表す。The plan view of the ventilation impermeable composite material for civil engineering which concerns on one Embodiment of this invention is shown. 図１に示した土木用通気遮水複合材のＡ−Ａ断面図を表す。A cross-sectional view taken along the line AA of the ventilation and impermeable composite material for civil engineering shown in FIG. 1 is shown. 本発明の別の一実施形態に係る土木用通気遮水複合材の平面図を表す。The plan view of the ventilation impermeable composite material for civil engineering which concerns on another embodiment of this invention is shown. 本発明のさらに別の一実施形態に係る土木用通気遮水複合材の斜視図を表す。It shows the perspective view of the ventilation and impermeable composite material for civil engineering which concerns on still another Embodiment of this invention. 図４に示した土木用通気遮水複合材のＢ−Ｂ断面図を表す。It shows the BB sectional view of the ventilation impermeable composite material for civil engineering shown in FIG. 本発明のさらに別の一実施形態に係る土木用通気遮水複合材の斜視図を表す。It shows the perspective view of the ventilation and impermeable composite material for civil engineering which concerns on still another Embodiment of this invention. 図６に示した土木用通気遮水複合材のＣ−Ｃ断面図を表す。The CC cross-sectional view of the ventilation impermeable composite material for civil engineering shown in FIG. 6 is shown. 本発明のさらに別の一実施形態に係る土木用通気遮水複合材の平面図を表す。The plan view of the ventilation impermeable composite material for civil engineering which concerns on still another Embodiment of this invention is shown. 本発明のさらに別の一実施形態に係る土木用通気遮水複合材の平面図を表す。The plan view of the ventilation impermeable composite material for civil engineering which concerns on still another Embodiment of this invention is shown.

以下、実施の形態に基づき本発明を説明するが、本発明はもとより下記実施の形態によって制限を受けるものではなく、前・後記の趣旨に適合し得る範囲で適当に変更を加えて実施することも勿論可能であり、それらはいずれも本発明の技術的範囲に包含される。なお、各図面において、便宜上、ハッチングや部材符号等を省略する場合もあるが、かかる場合、明細書や他の図面を参照するものとする。また、図面における種々部材の寸法は、本発明の特徴の理解に資することを優先しているため、実際の寸法とは異なる場合がある。 Hereinafter, the present invention will be described based on the embodiments, but the present invention is not limited by the following embodiments as well as the present invention, and the present invention shall be carried out with appropriate modifications within the range suitable for the purpose of the preceding and the following. Of course, they are all within the technical scope of the present invention. In each drawing, hatching, member reference numerals, and the like may be omitted for convenience, but in such cases, the specification and other drawings shall be referred to. In addition, the dimensions of various members in the drawings may differ from the actual dimensions because priority is given to contributing to the understanding of the features of the present invention.

図１〜図２を参照して本発明の実施形態に係る土木用通気遮水複合材を説明する。図１は本発明の一実施形態に係る土木用通気遮水複合材１の平面図を表している。図２は図１に示した土木用通気遮水複合材１のＡ−Ａ断面図を表している。本発明の実施形態に係る土木用通気遮水複合材は、基材４０と第１遮水シート部１０と第２遮水シート部２０とを有しており、第１遮水シート部１０と第２遮水シート部２０は、第１遮水シート部１０と第２遮水シート部２０のうち少なくとも一方の面積の１０％〜９０％の範囲で重なりあっている。第１遮水シート部１０の一方面に第１遮水シート部１０の面積の５０％以下の一方面接合領域１１（以下、「第１遮水シート部一方面接合領域１１」と称する。）が設けられており、第１遮水シート部１０は第１遮水シート部一方面接合領域１１において、基材４０又は第２遮水シート部２０と接合している。 The ventilation and impermeable composite material for civil engineering according to the embodiment of the present invention will be described with reference to FIGS. 1 and 2. FIG. 1 shows a plan view of a ventilation and impermeable composite material 1 for civil engineering according to an embodiment of the present invention. FIG. 2 shows a cross-sectional view taken along the line AA of the civil engineering ventilation impermeable composite material 1 shown in FIG. The ventilation and impermeable composite material for civil engineering according to the embodiment of the present invention has a base material 40, a first impermeable sheet portion 10 and a second impermeable sheet portion 20, and includes the first impermeable sheet portion 10 and the first impermeable sheet portion 10. The second impermeable sheet portion 20 overlaps in the range of 10% to 90% of the area of at least one of the first impermeable sheet portion 10 and the second impermeable sheet portion 20. One-sided joint region 11 of 50% or less of the area of the first impermeable sheet portion 10 on one surface of the first impermeable sheet portion 10 (hereinafter, referred to as "first impermeable sheet portion one-sided joint region 11"). Is provided, and the first impermeable sheet portion 10 is joined to the base material 40 or the second impermeable sheet portion 20 in the one-sided bonding region 11 of the first impermeable sheet portion.

このような構成により、水分は図２の矢印ｂに示すように第１遮水シート部１０及び第２遮水シート２０により遮断されるが、ガスは図２の矢印ａに示すように第１遮水シート部１０と第２遮水シート部２０の間の空隙を通過することができる。また、基材４０、第１遮水シート部１０、及び第２遮水シート部２０は、第１遮水シート部一方面接合領域１１において接合されているため、土木用通気遮水複合材１はフレキシブルな構成を有し、被覆物がどのような形状であっても追随し易く、被覆物の被覆が容易となる。 With such a configuration, the moisture is blocked by the first impermeable sheet portion 10 and the second impermeable sheet 20 as shown by the arrow b in FIG. 2, but the gas is blocked by the first impermeable sheet as shown by the arrow a in FIG. It can pass through the gap between the impermeable sheet portion 10 and the second impermeable sheet portion 20. Further, since the base material 40, the first impermeable sheet portion 10, and the second impermeable sheet portion 20 are joined in the one-sided bonding region 11 of the first impermeable sheet portion, the ventilation impermeable composite material 1 for civil engineering 1 Has a flexible structure, can easily follow any shape of the covering, and can easily cover the covering.

基材４０は、織布又は不織布からなることが好ましい。織布又は不織布の種類は特に限定されず、公知の各種繊維から構成される繊維シートであることが好ましく、土木用通気遮水複合材１の遮水性を損なわないように第１遮水シート部１０及び第２遮水シート部２０よりも高い透湿性を有することが好ましい。不織布の製法としては、スパンボンド法、エアスルー法、ポイントボンド法、メルトブロー法、エアレイド法等が挙げられる。基材４０がこのような構成であれば、第１遮水シート１０及び第２遮水シート２０を支持する基材としての強度を確保しつつガスの通過を妨げないため好ましい。 The base material 40 is preferably made of a woven fabric or a non-woven fabric. The type of the woven fabric or the non-woven fabric is not particularly limited, and is preferably a fiber sheet composed of various known fibers, and the first impermeable sheet portion so as not to impair the water impermeability of the ventilation impermeable composite material 1 for civil engineering. It is preferable to have higher moisture permeability than 10 and the second impermeable sheet portion 20. Examples of the method for producing the non-woven fabric include a span bond method, an air through method, a point bond method, a melt blow method, and an airlaid method. If the base material 40 has such a configuration, it is preferable because it does not hinder the passage of gas while ensuring the strength as a base material that supports the first impermeable sheet 10 and the second impermeable sheet 20.

第１遮水シート部１０及び第２遮水シート部２０は、合成樹脂からなることが好ましい。合成樹脂の種類は特に限定されないが、突き刺し強度や引張強度等の強度や耐久性などに優れている点から、例えば、加硫ゴムやポリエチレン、ポリプロピレン、ポリ塩化ビニル、ポリ塩化ビニリデン、ポリウレタン、ポリスチレン、ポリ酢酸ビニル、ポリアミド、ポリエチレンテレフタレート、エチレン・酢酸ビニル共重合体等が好ましい。 The first impermeable sheet portion 10 and the second impermeable sheet portion 20 are preferably made of synthetic resin. The type of synthetic resin is not particularly limited, but it is excellent in strength and durability such as piercing strength and tensile strength. For example, vulture rubber, polyethylene, polypropylene, polyvinyl chloride, polyvinylidene chloride, polyurethane, polystyrene , Polyvinyl acetate, polyamide, polyethylene terephthalate, ethylene / vinyl acetate copolymer and the like are preferable.

第１遮水シート部１０及び第２遮水シート部２０の大きさと形状は任意に選択できる。第１遮水シート部１０と第２遮水シート部２０は、第１遮水シート部１０と第２遮水シート部２０のうち少なくとも一方の面積の１０％以上の面積で重なっており、１５％以上がより好ましく、２０％以上がさらに好ましく、３０％以上がよりさらに好ましく、５０％以上であってもよい。また、第１遮水シート部１０と第２遮水シート部２０は、第１遮水シート部１０と第２遮水シート部２０のうち少なくとも一方の面積の９０％以下の面積で重なっており、８５％以下がより好ましく、８０％以下がさらに好ましく、７０％以下がよりさらに好ましく、６０％以下であってもよい。 The size and shape of the first impermeable sheet portion 10 and the second impermeable sheet portion 20 can be arbitrarily selected. The first impermeable sheet portion 10 and the second impermeable sheet portion 20 overlap each other in an area of 10% or more of the area of at least one of the first impermeable sheet portion 10 and the second impermeable sheet portion 20. % Or more is more preferable, 20% or more is further preferable, 30% or more is further preferable, and 50% or more may be used. Further, the first impermeable sheet portion 10 and the second impermeable sheet portion 20 overlap in an area of 90% or less of the area of at least one of the first impermeable sheet portion 10 and the second impermeable sheet portion 20. , 85% or less is more preferable, 80% or less is further preferable, 70% or less is further preferable, and 60% or less may be used.

第１遮水シート部１０及び第２遮水シート部２０は、一枚のシートが折り畳まれて形成されるものであってもよいし、それぞれが独立したシートであってもよい。一枚のシートが折り畳まれている場合は、折り部３０において折り畳まれ、第１遮水シート部１０と第２遮水シート部２０とは折り部３０を介して繋がっていてもよい。どちらの場合であっても、第１遮水シート部１０及び第２遮水シート部２０はシート状の部材であり、一方面と他方面とを有する。図１〜図２では、基材４０に面している側が一方面、それと反対側が他方面である。 The first impermeable sheet portion 10 and the second impermeable sheet portion 20 may be formed by folding one sheet, or may be independent sheets. When one sheet is folded, it may be folded at the folded portion 30, and the first impermeable sheet portion 10 and the second impermeable sheet portion 20 may be connected via the folded portion 30. In either case, the first impermeable sheet portion 10 and the second impermeable sheet portion 20 are sheet-like members, and have one surface and the other surface. In FIGS. 1 and 2, the side facing the base material 40 is one side, and the side opposite to it is the other side.

第１遮水シート部１０の一方面に、第１遮水シート部１０の面積の５０％以下の接合領域１１が設けられている。第１遮水シート部一方面接合領域１１の面積の上限が第１遮水シート部１０の面積の５０％以下であれば、土木用通気遮水複合材１の通気性及び柔軟性を確保できる。第１遮水シート部一方面接合領域１１の面積は、第１遮水シート部１０の面積の４０％以下が好ましく、３０％以下がより好ましく、２５％以下がさらに好ましい。第１遮水シート部一方面接合領域１１の面積が小さいほど通気性及び柔軟性が向上するので好ましい。また、第１遮水シート部一方面接合領域１１の面積は、第１遮水シート部１０の面積の５％以上が好ましく、８％以上がより好ましく、１０％以上がさらに好ましい。第１遮水シート部一方面接合領域１１の面積が第１遮水シート部１０の面積の５％以上であれば、遮水性や土木用通気遮水複合材１の強度が保たれるため好ましい。 A joining region 11 of 50% or less of the area of the first impermeable sheet portion 10 is provided on one surface of the first impermeable sheet portion 10. When the upper limit of the area of the one-sided joint region 11 of the first impermeable sheet portion is 50% or less of the area of the first impermeable sheet portion 10, the air permeability and flexibility of the ventilation impermeable composite material 1 for civil engineering can be ensured. .. The area of the one-sided joint region 11 of the first impermeable sheet portion is preferably 40% or less, more preferably 30% or less, still more preferably 25% or less of the area of the first impermeable sheet portion 10. The smaller the area of the one-sided joint region 11 of the first impermeable sheet portion, the better the air permeability and flexibility, which is preferable. The area of the one-sided joint region 11 of the first impermeable sheet portion is preferably 5% or more, more preferably 8% or more, still more preferably 10% or more of the area of the first impermeable sheet portion 10. When the area of the one-sided joint region 11 of the first impermeable sheet portion is 5% or more of the area of the first impermeable sheet portion 10, it is preferable because the water impermeability and the strength of the ventilation impermeable composite material 1 for civil engineering are maintained. ..

第１遮水シート部一方面接合領域１１は、基材４０と第２遮水シート部２０のどちらに接合していてもよい。例えば、第１遮水シート部一方面接合領域１１の全体が基材４０又は第２遮水シート部２０に接合していてもよいし、第１遮水シート部一方面接合領域１１のうち一部が基材４０に接合してそれ以外の部分が第２遮水シート部２０に接合していてもよい。 The one-sided bonding region 11 of the first impermeable sheet portion may be bonded to either the base material 40 or the second impermeable sheet portion 20. For example, the entire one-sided bonding region 11 of the first impermeable sheet portion may be bonded to the base material 40 or the second impermeable sheet portion 20, or one of the one-sided bonding regions 11 of the first impermeable sheet portion. The portion may be bonded to the base material 40 and the other portion may be bonded to the second impermeable sheet portion 20.

第１遮水シート部１０及び第２遮水シート部２０は、それぞれの端部のうち少なくとも一部はどの部材とも接合されていない自由端であることが好ましい。上記自由端の割合は、第１遮水シート部１０及び第２遮水シート部２０の端部の全体の長さの２０％以上が好ましく、３０％以上がより好ましく、４０％以上がさらに好ましく、５０％以上がよりさらに好ましい。また、上記自由端の割合は、７５％以下が好ましく、７０％以下がより好ましく、６５％以下がさらに好ましく、６０％以下がよりさらに好ましい。第１遮水シート部１０及び第２遮水シート部２０が端部にこの範囲の自由端を有していれば、土木用通気遮水複合材１は遮水性を確保しつつ、通気性と柔軟性を向上できて好ましい。 It is preferable that the first impermeable sheet portion 10 and the second impermeable sheet portion 20 are free ends in which at least a part of the respective end portions is not joined to any member. The ratio of the free ends is preferably 20% or more, more preferably 30% or more, still more preferably 40% or more of the total length of the ends of the first impermeable sheet portion 10 and the second impermeable sheet portion 20. , 50% or more is even more preferable. The ratio of the free end is preferably 75% or less, more preferably 70% or less, further preferably 65% or less, still more preferably 60% or less. If the first impermeable sheet portion 10 and the second impermeable sheet portion 20 have free ends in this range at the ends, the civil engineering ventilation impermeable composite material 1 is breathable while ensuring water impermeability. It is preferable because it can improve flexibility.

第１遮水シート部一方面接合領域１１が有する接合の手段は特に制限されないが、接着剤による接着、エンボス加工等による機械的接合、熱融着による接合等が好ましい。いずれの接合法であっても、第１遮水シート部一方面接合領域１１の全領域に接合手段が施されているとは限らず、例えば接着剤による接着であれば、接着剤がドット状、直線状、波線状等に塗布されていてもよい。機械的接合、熱融着による接合等でも同様である。 The joining means included in the one-sided joining region 11 of the first impermeable sheet portion is not particularly limited, but bonding by an adhesive, mechanical joining by embossing or the like, joining by heat fusion or the like is preferable. Regardless of the joining method, the joining means is not always applied to the entire region of the one-sided bonding region 11 of the first impermeable sheet portion. For example, in the case of bonding with an adhesive, the adhesive has a dot shape. , Straight line, wavy line, etc. may be applied. The same applies to mechanical joining, joining by heat fusion, and the like.

第１遮水シート部１０及び第２遮水シート部２０は、ＪＩＳ Ｌ１０９２ Ａ法記載の方法に準拠した方法により測定した耐水度が３００ｍｍＨ2Ｏ以上であることが好ましい。耐水度が３００ｍｍＨ2Ｏ以上であれば被覆物への雨水等の水分の侵入を防ぐことができる。耐水度は高い方が好ましく、より好ましくは４００ｍｍＨ2Ｏ以上、さらに好ましくは５００ｍｍＨ2Ｏ以上である。耐水度の上限は特に制限されないが、好ましくは２５００ｍｍＨ2Ｏ以下である。 The first impermeable sheet portion 10 and the second impermeable sheet portion 20 preferably have a water resistance of 300 mmH 2 O or more as measured by a method based on the method described in JIS L1092 A method. If the water resistance is 300 mmH 2 O or more, it is possible to prevent the intrusion of water such as rainwater into the coating. Higher water resistance is preferable, more preferably 400 mmH 2 O or more, still more preferably 500 mmH 2 O or more. The upper limit of the water resistance is not particularly limited, but is preferably 2500 mmH 2 O or less.

第１遮水シート部１０及び第２遮水シート部２０は、ＪＩＳ Ｌ−１０９９ Ａ−１法記載の方法に準拠した方法により測定した透湿度が２０００ｇ／ｍ2・２４ｈｒ以下であることが好ましい。本発明の実施形態に係る土木用通気遮水複合材１は第１遮水シート部１０と第２遮水シート部２０の間に形成される空隙をガスが通過することで通気性が確保されるため、第１遮水シート部１０及び第２遮水シート部２０自体の透湿度が２０００ｇ／ｍ2・２４ｈｒ以下であっても土木用通気遮水複合材１の通気性は損なわれない。第１遮水シート部１０及び第２遮水シート部２０の透湿度は１８００ｇ／ｍ2・２４ｈｒ以下であってもよく、１６００ｇ／ｍ2・２４ｈｒ以下であってもよい。第１遮水シート部１０及び第２遮水シート部２０の透湿度の下限は特に制限されないが、１００ｇ／ｍ2・２４ｈｒ以上であってもよく、１５０ｇ／ｍ2・２４ｈｒ以上であってもよい。 The first water barrier sheet portion 10 and the second water barrier sheet portion 20 is preferably moisture permeability was measured by a method according to the method of JIS L-1099 A-1 method described is not more than 2000 g / m 2 · 24 hr or .. The ventilation and impermeable composite material 1 for civil engineering according to the embodiment of the present invention ensures air permeability by allowing gas to pass through a gap formed between the first impermeable sheet portion 10 and the second impermeable sheet portion 20. because moisture permeability of the first water barrier sheet portion 10 and the second water barrier sheet portion 20 itself is not impaired permeability of civil engineering for ventilation water-impervious composite material 1 it is not more than 2000g / m 2 · 24hr. Moisture permeability of the first water barrier sheet portion 10 and the second water barrier sheet portion 20 may be less 1800g / m 2 · 24hr, may be not more than 1600g / m 2 · 24hr. The lower limit of the moisture permeability of the first water barrier sheet portion 10 and the second water barrier sheet portion 20 is not particularly limited, it may also be 100 g / m 2 · 24 hr or more, even 150 g / m 2 · 24 hr or more Good.

図３〜図５を参照して、本発明の別の一実施形態に係る土木用通気遮水複合材を説明する。図３は、本発明の別の一実施形態に係る土木用通気遮水複合材１の平面図を表している。図４は、本発明のさらに別の一実施形態に係る土木用通気遮水複合材１の斜視図を表し、図５は図４に示した土木用通気遮水複合材１のＢ−Ｂ断面図を表している。本発明の実施形態にかかる土木用通気遮水複合材は、第２遮水シート部２０の一方面に第２遮水シート部２０の面積の５０％以下の一方面接合領域２１（以下、「第２遮水シート部一方面接合領域２１」と称する。）が設けられており、第２遮水シート部２０は第２遮水シート部一方面接合領域２１において、基材４０又は第１遮水シート部１０と接合していることが好ましい。 A ventilation and impermeable composite material for civil engineering according to another embodiment of the present invention will be described with reference to FIGS. 3 to 5. FIG. 3 shows a plan view of a ventilation and impermeable composite material 1 for civil engineering according to another embodiment of the present invention. FIG. 4 shows a perspective view of the civil engineering ventilation impermeable composite material 1 according to still another embodiment of the present invention, and FIG. 5 shows a BB cross section of the civil engineering ventilation impermeable composite material 1 shown in FIG. The figure is shown. In the civil engineering ventilation impermeable composite material according to the embodiment of the present invention, one surface of the second impermeable sheet portion 20 is a one-sided joint region 21 of 50% or less of the area of the second impermeable sheet portion 20 (hereinafter, "" A second impermeable sheet portion one-sided joint region 21 ”) is provided, and the second impermeable sheet portion 20 is provided with a base material 40 or a first shield in the second impermeable sheet portion one-sided joint region 21. It is preferably joined to the water sheet portion 10.

図３は、一枚のシートが折り畳まれて第１遮水シート部１０及び第２遮水シート部２０が形成された態様を表し、図３〜図４は、第１遮水シート部１０及び第２遮水シート部２０がそれぞれ独立したシートである態様を表している。図３に示すように、第２遮水シート部一方面接合領域２１の一部は基材４０に接合しそれ以外は第１遮水シート部１０に接合していてもよい。また、図４に示すように、第２遮水シート部一方面接合領域２１の全体が基材４０に接合していてもよい。さらに、図示していないが第２遮水シート部一方面接合領域２１の全体が第１遮水シート部１０に接合していてもよい。 FIG. 3 shows an embodiment in which one sheet is folded to form the first impermeable sheet portion 10 and the second impermeable sheet portion 20, and FIGS. 3 to 4 show the first impermeable sheet portion 10 and the second impermeable sheet portion 20. It represents an embodiment in which the second impermeable sheet portion 20 is an independent sheet. As shown in FIG. 3, a part of the one-sided bonding region 21 of the second impermeable sheet portion may be bonded to the base material 40, and the other portion may be bonded to the first impermeable sheet portion 10. Further, as shown in FIG. 4, the entire one-sided bonding region 21 of the second impermeable sheet portion may be bonded to the base material 40. Further, although not shown, the entire one-sided bonding region 21 of the second impermeable sheet portion may be bonded to the first impermeable sheet portion 10.

このような構成により、水分は図５の矢印ｂに示すように第１遮水シート部１０及び第２遮水シート２０により遮断されるが、ガスは図５の矢印ａに示すように第１遮水シート部１０と第２遮水シート部２０の間の空隙を通過することで通気性が確保できるので好ましい。また、基材４０、第１遮水シート部１０、及び第２遮水シート部２０は、第１遮水シート部一方面接合領域１１及び第２遮水シート部一方面接合領域２１において接合されているため、土木用通気遮水複合材１はフレキシブルな構成を有し、被覆物がどのような形状であっても追随し易く、被覆物の被覆が容易となる。 With such a configuration, the water is blocked by the first impermeable sheet portion 10 and the second impermeable sheet 20 as shown by the arrow b in FIG. 5, but the gas is blocked by the first impermeable sheet as shown by the arrow a in FIG. It is preferable that the air permeability can be ensured by passing through the gap between the impermeable sheet portion 10 and the second impermeable sheet portion 20. Further, the base material 40, the first impermeable sheet portion 10, and the second impermeable sheet portion 20 are joined in the first impermeable sheet portion one-sided bonding region 11 and the second impermeable sheet portion one-sided bonding region 21. Therefore, the ventilation / impermeable composite material 1 for civil engineering has a flexible structure, can easily follow any shape of the covering, and can easily cover the covering.

第２遮水シート部一方面接合領域２１の面積の上限が第２遮水シート部２０の面積の５０％以下であれば、土木用通気遮水複合材１の通気性及び柔軟性を確保できる。第２遮水シート部一方面接合領域２１の面積は、第２遮水シート部２０の面積の４０％以下が好ましく、３０％以下がより好ましく、２５％以下がさらに好ましい。第２遮水シート部一方面接合領域２１の面積が小さいほど通気性及び柔軟性が向上するので好ましい。また、第２遮水シート部一方面接合領域２１の面積は、第２遮水シート部２０の面積の５％以上が好ましく、８％以上がより好ましく、１０％以上がさらに好ましい。第２遮水シート部一方面接合領域２１の面積が第２遮水シート部２０の面積の５％以上であれば、遮水性や土木用通気遮水複合材１の強度が保たれるため好ましい。 If the upper limit of the area of the one-sided joint region 21 of the second impermeable sheet portion is 50% or less of the area of the second impermeable sheet portion 20, the air permeability and flexibility of the ventilation impermeable composite material 1 for civil engineering can be ensured. .. The area of the one-sided joint region 21 of the second impermeable sheet portion is preferably 40% or less, more preferably 30% or less, still more preferably 25% or less of the area of the second impermeable sheet portion 20. The smaller the area of the one-sided joint region 21 of the second impermeable sheet portion, the better the air permeability and flexibility, which is preferable. Further, the area of the one-sided joint region 21 of the second impermeable sheet portion is preferably 5% or more, more preferably 8% or more, still more preferably 10% or more of the area of the second impermeable sheet portion 20. When the area of the one-sided joint region 21 of the second impermeable sheet portion 21 is 5% or more of the area of the second impermeable sheet portion 20, it is preferable because the water impermeability and the strength of the ventilation impermeable composite material 1 for civil engineering are maintained. ..

第２遮水シート部一方面接合領域２１が有する接合の手段は特に制限されないが、接着剤による接着、エンボス加工等による機械的接合、熱融着による接合等が好ましい。いずれの接合法であっても、第２遮水シート部一方面接合領域２１の全領域に接合手段が施されているとは限らず、例えば接着剤による接着であれば、接着剤がドット状、直線状、波線状等に塗布されていてもよい。機械的接合、熱融着による接合等でも同様である。 The joining means of the one-sided joining region 21 of the second impermeable sheet portion is not particularly limited, but bonding by an adhesive, mechanical joining by embossing or the like, joining by heat fusion or the like is preferable. Regardless of the joining method, the joining means is not always applied to the entire area of the one-sided joining area 21 of the second impermeable sheet portion. For example, in the case of bonding with an adhesive, the adhesive has a dot shape. , Straight line, wavy line, etc. may be applied. The same applies to mechanical joining, joining by heat fusion, and the like.

図６〜図７を参照して、本発明のさらに別の一実施形態に係る土木用通気遮水複合材を説明する。図６は本発明のさらに別の一実施形態に係る土木用通気遮水複合材の斜視図を表し、図７は図６に示した土木用通気遮水複合材のＣ−Ｃ断面図を表す。本発明のさらに別の一実施形態に係る土木用通気遮水複合材１はさらに保護層５０を有しており、第１遮水シート部１０の他方面に第１遮水シート部１０の面積の５０％以下の他方面接合領域１２（以下、「第１遮水シート部他方面接合領域１２」と称する）が設けられており、第１遮水シート部１０は第１遮水シート部他方面接合領域１２において、保護層５０又は第２遮水シート部２０と接合していることが好ましい。 A ventilation and impermeable composite material for civil engineering according to still another embodiment of the present invention will be described with reference to FIGS. 6 to 7. FIG. 6 shows a perspective view of the ventilation impermeable composite material for civil engineering according to still another embodiment of the present invention, and FIG. 7 shows a CC sectional view of the ventilation impermeable composite material for civil engineering shown in FIG. .. The ventilation and impermeable composite material 1 for civil engineering according to still another embodiment of the present invention further has a protective layer 50, and the area of the first impermeable sheet portion 10 on the other surface of the first impermeable sheet portion 10. The other surface joint region 12 (hereinafter, referred to as "first impermeable sheet portion other surface joint region 12") of 50% or less of the above is provided, and the first impermeable sheet portion 10 is the first impermeable sheet portion and the like. In the direction joining region 12, it is preferable that the protective layer 50 or the second impermeable sheet portion 20 is joined.

本発明のさらに別の一実施形態に係る土木用通気遮水複合材１は、第２遮水シート部２０の他方面に第２遮水シート部２０の面積の５０％以下の他方面接合領域２２（以下、「第２遮水シート部他方面接合領域２２」と称する）が設けられており、第２遮水シート部２０は第２遮水シート部他方面接合領域２２において、保護層５０又は第１遮水シート部１０と接合していることが好ましい。 In the ventilation impermeable composite material 1 for civil engineering according to still another embodiment of the present invention, the other surface joint region of 50% or less of the area of the second impermeable sheet portion 20 is formed on the other surface of the second impermeable sheet portion 20. 22 (hereinafter referred to as “second impermeable sheet portion other surface joining region 22”) is provided, and the second impermeable sheet portion 20 is provided with a protective layer 50 in the second impermeable sheet portion other surface joining region 22. Alternatively, it is preferably joined to the first impermeable sheet portion 10.

図６に保護層５０は図示していないが、図７に示すように第１遮水シート部１０及び第２遮水シート部２０を挟んで基材４０と対向するように保護層５０が配置されており、この態様においては、第１遮水シート部他方面接合領域１２及び第２遮水シート部他方面接合領域２２が保護層５０と接合していることが好ましい。また、図示していないが、第１遮水シート部他方面接合領域１２及び第２遮水シート部他方面接合領域２２が第１遮水シート部１０と接合していてもよいし、第１遮水シート部他方面接合領域１２及び第２遮水シート部他方面接合領域２２がそれぞれ、一部分は保護層５０と、それ以外の部分は第１遮水シート部１０と接合していてもよい。 Although the protective layer 50 is not shown in FIG. 6, as shown in FIG. 7, the protective layer 50 is arranged so as to face the base material 40 with the first impermeable sheet portion 10 and the second impermeable sheet portion 20 interposed therebetween. In this embodiment, it is preferable that the first impermeable sheet portion other surface bonding region 12 and the second impermeable sheet portion other surface bonding region 22 are bonded to the protective layer 50. Further, although not shown, the first impermeable sheet portion other surface bonding region 12 and the second impermeable sheet portion other surface bonding region 22 may be bonded to the first impermeable sheet portion 10, or the first. The other surface joining region 12 of the impermeable sheet portion and the other surface joining region 22 of the second impermeable sheet portion may be partially joined to the protective layer 50 and the other portion may be joined to the first impermeable sheet portion 10. ..

第１遮水シート部他方面接合領域１２及び第２遮水シート部他方面接合領域２２の面積は、それぞれ第１遮水シート部１０及び第２遮水シート部２０の面積の５０％以下であれば、土木用通気遮水複合材１の通気性及び柔軟性を確保できる。第１遮水シート部他方面接合領域１２及び第２遮水シート部他方面接合領域２２の面積は、それぞれ第１遮水シート部１０及び第２遮水シート部２０の面積の４０％以下が好ましく、３０％以下がより好ましく、２５％以下がさらに好ましい。第１遮水シート部他方面接合領域１２及び第２遮水シート部他方面接合領域２２の面積が小さいほど通気性及び柔軟性が向上するので好ましい。また、第１遮水シート部他方面接合領域１２及び第２遮水シート部他方面接合領域２２の面積は、それぞれ第１遮水シート部１０及び第２遮水シート部２０の面積の５％以上が好ましく、８％以上がより好ましく、１０％以上がさらに好ましい。第１遮水シート部他方面接合領域１２及び第２遮水シート部他方面接合領域２２の面積がそれぞれ第１遮水シート部１０及び第２遮水シート部２０の面積の５％以上であれば、遮水性や土木用通気遮水複合材１の強度が保たれるため好ましい。 The areas of the first impermeable sheet portion other surface joint region 12 and the second impermeable sheet portion other surface joint region 22 are 50% or less of the areas of the first impermeable sheet portion 10 and the second impermeable sheet portion 20, respectively. If so, the air permeability and flexibility of the air-permeable and impermeable composite material 1 for civil engineering can be ensured. The area of the first impermeable sheet portion other surface joint region 12 and the second impermeable sheet portion other surface joint region 22 is 40% or less of the area of the first impermeable sheet portion 10 and the second impermeable sheet portion 20, respectively. It is preferably 30% or less, more preferably 25% or less. It is preferable that the smaller the area of the first impermeable sheet portion other surface joint region 12 and the second impermeable sheet portion other surface joint region 22 is, the better the air permeability and flexibility are. Further, the areas of the first impermeable sheet portion other surface joint region 12 and the second impermeable sheet portion other surface joint region 22 are 5% of the areas of the first impermeable sheet portion 10 and the second impermeable sheet portion 20, respectively. The above is preferable, 8% or more is more preferable, and 10% or more is further preferable. The area of the first impermeable sheet portion other surface joint region 12 and the second impermeable sheet portion other surface joint region 22 should be 5% or more of the area of the first impermeable sheet portion 10 and the second impermeable sheet portion 20, respectively. For example, it is preferable because the water impermeability and the strength of the ventilation impermeable composite material 1 for civil engineering are maintained.

保護層５０は、基材４０と同じ材料からなっていてもよいし、異なっていてもよい。保護層５０は、第１遮水シート部１０及び第２遮水シート部を保護するために設けられることが好ましく、第１遮水シート部１０及び第２遮水シート部２０よりも高い透湿性を有することが好ましい。 The protective layer 50 may be made of the same material as the base material 40, or may be different. The protective layer 50 is preferably provided to protect the first impermeable sheet portion 10 and the second impermeable sheet portion, and has higher moisture permeability than the first impermeable sheet portion 10 and the second impermeable sheet portion 20. It is preferable to have.

このような構成であれば、水分は図７の矢印ｂに示すように第１遮水シート部１０及び第２遮水シート部２０により遮断されるが、ガスは図７の矢印ａに示すように第１遮水シート部１０と第２遮水シート部２０の間の空隙を通過することで通気性が確保できるので好ましい。また、基材４０、第１遮水シート部１０、第２遮水シート部２０、及び保護層５０は、第１遮水シート部一方面接合領域１１、第２遮水シート部一方面接合領域２１、第１遮水シート部他方面接合領域１２、及び第２遮水シート部他方面接合領域２２において接合されているため、土木用通気遮水複合材１はフレキシブルな構成を有し、被覆物がどのような形状であっても追随し易く、被覆物の被覆が容易となる。特に、基材４０と保護層５０とが直接接合されておらず、第１遮水シート部一方面接合領域１１、第２遮水シート部一方面接合領域２１、第１遮水シート部他方面接合領域１２、及び第２遮水シート部他方面接合領域２２の面積はそれぞれ第１遮水シート部１０又は第２遮水シート部２０の面積の５０％以下、好ましくは４０％以下、より好ましくは３０％以下、さらに好ましくは２５％以下であるため、基材４０、第１遮水シート部１０、第２遮水シート部２０、及び保護層５０が層状に重なった状態であっても互いに移動可能となり、土木用通気遮水複合材１の柔軟性が保たれるため好ましい。 With such a configuration, moisture is blocked by the first impermeable sheet portion 10 and the second impermeable sheet portion 20 as shown by the arrow b in FIG. 7, but the gas is blocked by the second impermeable sheet portion 20 as shown by the arrow a in FIG. It is preferable that the air permeability can be ensured by passing through the gap between the first impermeable sheet portion 10 and the second impermeable sheet portion 20. Further, the base material 40, the first impermeable sheet portion 10, the second impermeable sheet portion 20, and the protective layer 50 are the first impermeable sheet portion one-sided bonding region 11 and the second impermeable sheet portion one-sided bonding region. Since the 21st, the 1st impermeable sheet portion other surface bonding region 12 and the 2nd impermeable sheet portion other surface bonding region 22 are bonded, the civil engineering ventilation impermeable composite material 1 has a flexible structure and is coated. It is easy to follow any shape of the object, and it is easy to cover the covering. In particular, the base material 40 and the protective layer 50 are not directly bonded, and the first impermeable sheet portion one-sided bonding region 11, the second impermeable sheet portion one-sided bonding region 21, and the first impermeable sheet portion other surface. The area of the joint region 12 and the other surface joint region 22 of the second impermeable sheet portion is 50% or less, preferably 40% or less, more preferably 40% or less of the area of the first impermeable sheet portion 10 or the second impermeable sheet portion 20, respectively. Is 30% or less, more preferably 25% or less, so even when the base material 40, the first impermeable sheet portion 10, the second impermeable sheet portion 20, and the protective layer 50 are layered on top of each other It is preferable because it can be moved and the flexibility of the ventilation / impermeable composite material 1 for civil engineering is maintained.

第１遮水シート部一方面接合領域１１、第２遮水シート部一方面接合領域２１、第１遮水シート部他方面接合領域１２、及び第２遮水シート部他方面接合領域２２のうち少なくとも一つは、複数の接合部が間隔を開けて設けられていることが好ましい。図８に一例を示す。図８では、第２遮水シート部一方面接合領域２１及び第１遮水シート部他方面接合領域１２が間隔を開けて設けられている接合部を有している。このような構成により、それぞれの接合部間の空隙をガスが通過することで通気性を確保できるため好ましい。 Of the first impermeable sheet portion one-sided joint region 11, the second impermeable sheet portion one-sided joint region 21, the first impermeable sheet portion other-sided joint region 12, and the second impermeable sheet portion other-sided joint region 22. At least one is preferably provided with a plurality of joints spaced apart from each other. An example is shown in FIG. In FIG. 8, the second impermeable sheet portion one-sided joint region 21 and the first impermeable sheet portion other-sided joint region 12 have a joint portion provided at intervals. Such a configuration is preferable because the gas can pass through the gaps between the joints to ensure air permeability.

第１遮水シート部１０と第２遮水シート部２０は、第１遮水シート部１０と第２遮水シート部２０のうち少なくとも一方の面積の１０％〜９０％の範囲で重なり合っているため、土木用通気遮水複合材１は、第１遮水シート部１０と第２遮水シート部２０とが何層も重なり合った構成を有する場合がある。例えば、第１遮水シート部１０と第２遮水シート部２０とが同じ大きさで、互いに５０％より大きい面積が重なり合っている場合、土木用通気遮水複合材１のある部分においては少なくとも３枚のシート部が層状に重なり合っている。さらに大きい面積で重なり合う場合は４枚のシート部や５枚、６枚、及びそれ以上のシート部が層状に重なり合う場合もあり得る。そのような多層構造の場合であっても、第１遮水シート部一方面接合領域１１、第２遮水シート部一方面接合領域２１、第１遮水シート部他方面接合領域１２、及び第２遮水シート部他方面接合領域２２のうち少なくとも一つは、複数の接合部が間隔を開けて設けられていることにより、それぞれの接合部間の空隙をガスが通過することで通気性を確保できるため好ましい。 The first impermeable sheet portion 10 and the second impermeable sheet portion 20 overlap each other in the range of 10% to 90% of the area of at least one of the first impermeable sheet portion 10 and the second impermeable sheet portion 20. Therefore, the ventilation impermeable composite material 1 for civil engineering may have a configuration in which the first impermeable sheet portion 10 and the second impermeable sheet portion 20 are overlapped in many layers. For example, when the first impermeable sheet portion 10 and the second impermeable sheet portion 20 have the same size and the areas larger than 50% overlap each other, at least in a part of the civil engineering ventilation impermeable composite material 1. The three sheet portions are layered on top of each other. When overlapping in a larger area, four sheet portions, five, six sheets, and more sheet portions may overlap in a layered manner. Even in the case of such a multi-layer structure, the first impermeable sheet portion one-sided joint region 11, the second impermeable sheet portion one-sided joint region 21, the first impermeable sheet portion other-sided joint region 12, and the first 2. At least one of the other surface joint regions 22 of the impermeable sheet portion is provided with a plurality of joint portions at intervals, so that gas can pass through the gaps between the joint portions to provide air permeability. It is preferable because it can be secured.

図９に、第１遮水シート部一方面接合領域１１、第２遮水シート部一方面接合領域２１、第１遮水シート部他方面接合領域１２、及び第２遮水シート部他方面接合領域２２のうち少なくとも一つは、複数の接合部が間隔を開けて設けられている場合の別の態様を示す。このように、第１遮水シート部一方面接合領域１１、第２遮水シート部一方面接合領域２１、第１遮水シート部他方面接合領域１２、及び第２遮水シート部他方面接合領域２２のうち少なくとも一つに設けられている複数の接合部が、第１遮水シート部１０、及び第２遮水シート部２０のそれぞれ端部に設けられており、該接合部が基材４０の端部と接合していてもよい。このような構成は、第１遮水シート部１０と第２遮水シート部２０とが折り部３０を介して繋がっていない場合に好ましく、基材４０、第１遮水シート部１０、及び第２遮水シート部２０が重なった状態で端部を圧着する等して形成することができる。 FIG. 9 shows the first impermeable sheet portion one-sided joint region 11, the second impermeable sheet portion one-sided joint region 21, the first impermeable sheet portion other-sided joint region 12, and the second impermeable sheet portion other-sided joint region. At least one of the regions 22 shows another aspect in the case where the plurality of joints are provided at intervals. As described above, the first impermeable sheet portion one-sided joint region 11, the second impermeable sheet portion one-sided joint region 21, the first impermeable sheet portion other-sided joint region 12, and the second impermeable sheet portion other-sided joint region are joined. A plurality of joints provided in at least one of the regions 22 are provided at the ends of the first impermeable sheet portion 10 and the second impermeable sheet portion 20, and the joints are base materials. It may be joined to the end of 40. Such a configuration is preferable when the first impermeable sheet portion 10 and the second impermeable sheet portion 20 are not connected via the folded portion 30, and the base material 40, the first impermeable sheet portion 10, and the first 2 It can be formed by crimping the end portions in a state where the impermeable sheet portions 20 are overlapped with each other.

１：土木用通気遮水複合材
１０：第１遮水シート部
１１：第１遮水シート部一方面接合領域
１２：第１遮水シート部他方面接合領域
２０：第２遮水シート部
２１：第２遮水シート部一方面接合領域
２２：第２遮水シート部他方面接合領域
３０：折り部
４０：基材
５０：保護層
矢印ａ：通気方向
矢印ｂ：遮水方向 1: Ventilation and impermeable composite material for civil engineering 10: 1st impermeable sheet portion 11: 1st impermeable sheet portion one-sided joint region 12: 1st impermeable sheet portion and other surface joint region 20: 2nd impermeable sheet portion 21 : Second impermeable sheet portion one-sided joint region 22: Second impermeable sheet portion other-sided joint region 30: Folded portion 40: Base material 50: Protective layer arrow a: Ventilation direction arrow b: Impermeable direction

Claims (8)

基材と第１遮水シート部と第２遮水シート部とを有しており、
前記第１遮水シート部と前記第２遮水シート部は、前記第１遮水シート部と前記第２遮水シート部のうち少なくとも一方の面積の１０％〜９０％の範囲で重なり合っており、
前記第１遮水シート部の一方面に前記第１遮水シート部の面積の５０％以下の一方面接合領域（以下、「第１遮水シート部一方面接合領域」と称する）が設けられており、
前記第１遮水シート部は前記第１遮水シート部一方面接合領域において、前記基材又は前記第２遮水シート部と接合していることを特徴とする土木用通気遮水複合材。 It has a base material, a first impermeable sheet portion, and a second impermeable sheet portion.
The first impermeable sheet portion and the second impermeable sheet portion overlap in a range of 10% to 90% of the area of at least one of the first impermeable sheet portion and the second impermeable sheet portion. ,
A one-sided bonding region (hereinafter, referred to as "first impermeable sheet portion one-sided bonding region") of 50% or less of the area of the first impermeable sheet portion is provided on one surface of the first impermeable sheet portion. And
A ventilation and impermeable composite material for civil engineering, wherein the first impermeable sheet portion is bonded to the base material or the second impermeable sheet portion in a one-sided bonding region of the first impermeable sheet portion. 前記第１遮水シート部及び前記第２遮水シート部が、それぞれ３００ｍｍＨ2Ｏ以上の耐水度（ＪＩＳ Ｌ−１０９２ Ａ法）と２０００ｇ／ｍ2・２４ｈｒ以下の透湿度（ＪＩＳ Ｌ−１０９９ Ａ−１法）を有する請求項１に記載の土木用通気遮水複合材。 The first water-barrier sheet portion and the second water barrier sheet portion, respectively 300MmH 2 O or more water resistance (JIS L-1092 A method) and 2000 g / m 2 · 24 hr or less moisture permeability (JIS L-1099 A -1) The ventilation and impermeable composite material for civil engineering according to claim 1. 前記第２遮水シート部の一方面に前記第２遮水シート部の面積の５０％以下の一方面接合領域（以下、「第２遮水シート部一方面接合領域」と称する）が設けられており、前記第２遮水シート部は前記第２遮水シート部一方面接合領域において、前記基材又は前記第１遮水シート部と接合している請求項１又は２に記載の土木用通気遮水複合材。 A one-sided joint region (hereinafter, referred to as "second impermeable sheet portion one-sided joint region") of 50% or less of the area of the second impermeable sheet portion is provided on one surface of the second impermeable sheet portion. The civil engineering use according to claim 1 or 2, wherein the second impermeable sheet portion is joined to the base material or the first impermeable sheet portion in the one-sided bonding region of the second impermeable sheet portion. Ventilation and impermeable composite material. さらに保護層を有しており、前記第１遮水シート部の他方面に前記第１遮水シート部の面積の５０％以下の他方面接合領域（以下、「第１遮水シート部他方面接合領域」と称する）が設けられており、前記第１遮水シート部は前記第１遮水シート部他方面接合領域において、前記保護層又は前記第２遮水シート部と接合している請求項１〜３のいずれか一項に記載の土木用通気遮水複合材。 Further, it has a protective layer, and on the other surface of the first impermeable sheet portion, a other surface bonding region of 50% or less of the area of the first impermeable sheet portion (hereinafter, "the other surface of the first impermeable sheet portion"). A "joining region") is provided, and the first impermeable sheet portion is joined to the protective layer or the second impermeable sheet portion in the other surface joining region of the first impermeable sheet portion. The ventilation and impermeable composite material for civil engineering according to any one of Items 1 to 3. 前記第２遮水シート部の他方面に前記第２遮水シート部の面積の５０％以下の他方面接合領域（以下、「第２遮水シート部他方面接合領域」と称する）が設けられており、前記第２遮水シート部は前記第２遮水シート部他方面接合領域において、前記保護層又は前記第１遮水シート部と接合している請求項１〜４のいずれか一項に記載の土木用通気遮水複合材。 On the other surface of the second impermeable sheet portion, a other surface bonding region (hereinafter, referred to as "second impermeable sheet portion other surface bonding region") of 50% or less of the area of the second impermeable sheet portion is provided. The second impermeable sheet portion is joined to the protective layer or the first impermeable sheet portion in the other surface joining region of the second impermeable sheet portion, any one of claims 1 to 4. Ventilation and impermeable composite material for civil engineering described in. 前記第１遮水シート部一方面接合領域、前記第１遮水シート部他方面接合領域、前記第２遮水シート部一方面接合領域及び前記第２遮水シート部他方面接合領域の少なくとも一つは複数の接合部が間隔を開けて設けられているものである請求項１〜５のいずれか一項に記載の土木用通気遮水複合材。 At least one of the one-sided joint region of the first impermeable sheet portion, the other-sided joint region of the first impermeable sheet portion, the one-sided joint region of the second impermeable sheet portion, and the other-sided joint region of the second impermeable sheet portion. The ventilation and impermeable composite material for civil engineering according to any one of claims 1 to 5, wherein a plurality of joints are provided at intervals. 前記基材が織布又は不織布からなる請求項１〜６のいずれか一項に記載の土木用通気遮水複合材。 The air-permeable and impermeable composite material for civil engineering according to any one of claims 1 to 6, wherein the base material is a woven fabric or a non-woven fabric. 前記保護層が前記基材と同じ材料からなる請求項１〜７のいずれか一項に記載の土木用通気遮水複合材。
The air-permeable and impermeable composite material for civil engineering according to any one of claims 1 to 7, wherein the protective layer is made of the same material as the base material.
JP2019084705A 2019-04-25 2019-04-25 Breathable and waterproof composite material for civil engineering Active JP7215314B2 (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0735033U (en) * 1993-12-14 1995-06-27 三菱化学株式会社 Breathable tarpaulin
JP2004276332A (en) * 2003-03-13 2004-10-07 Ootsuka:Kk Moisture permeable waterproof civil engineering sheet and its manufacturing method
JP2005081222A (en) * 2003-09-08 2005-03-31 Toyobo Co Ltd Moisture-permeable waterproof capping sheet and its executing method
JP2010184451A (en) * 2009-02-13 2010-08-26 Fukuvi Chem Ind Co Ltd Moisture permeable water proof sheet for building material
JP2014210379A (en) * 2013-04-18 2014-11-13 太陽工業株式会社 Laminated sheet, and method for joining laminated sheet

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0735033U (en) * 1993-12-14 1995-06-27 三菱化学株式会社 Breathable tarpaulin
JP2004276332A (en) * 2003-03-13 2004-10-07 Ootsuka:Kk Moisture permeable waterproof civil engineering sheet and its manufacturing method
JP2005081222A (en) * 2003-09-08 2005-03-31 Toyobo Co Ltd Moisture-permeable waterproof capping sheet and its executing method
JP2010184451A (en) * 2009-02-13 2010-08-26 Fukuvi Chem Ind Co Ltd Moisture permeable water proof sheet for building material
JP2014210379A (en) * 2013-04-18 2014-11-13 太陽工業株式会社 Laminated sheet, and method for joining laminated sheet

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