JP3755933B2

JP3755933B2 - A fixing material for fixing a waterproof sheet at an entrance / exit corner, and a construction method of the waterproof sheet at an entrance / exit angle using the accessory

Info

Publication number: JP3755933B2
Application number: JP18469496A
Authority: JP
Inventors: 佳巳村野
Original assignee: Lonseal Corp
Current assignee: Lonseal Corp
Priority date: 1996-07-15
Filing date: 1996-07-15
Publication date: 2006-03-15
Anticipated expiration: 2016-07-15
Also published as: JPH1025861A

Description

【０００１】
【発明の属する技術分野】
本発明は屋上やベランダ、プール水槽、蓄熱槽などにおいて出入隅角に設置し、その部分に敷設する防水シートを固定するための役物及び該役物を使用した防水シートの施工方法に関するものである。
【０００２】
【従来の技術】
従来、建物の屋上やベランダ、或いはプール水槽、蓄熱槽等において底面、足踏み面や天端面となる平面部と立ち上がり壁となる壁面部で構成される出入隅角に防水シートを施工する場合、まず、断面がほぼＬ字型の合成樹脂被覆鋼板を三つの出隅又は入隅に沿って各々別々にあてがい、次に出入隅角において合成樹脂被覆鋼板が互いに重ならず、かつ出隅又は入隅の付近で下地躯体が露出しないように合成樹脂被覆鋼板を切断して突き合わせ、切断部分をカバーするように突き合わせ交点の鋼板表面に増し張りシートを接合し、その上に防水シートを敷設していた。
【０００３】
【発明が解決しようとする課題】
従来の方法では出入隅角でそれぞれ三つの鋼板が切断されて突き合わされるため、地震による震動や下地躯体自身の伸縮によって下地躯体が動いたときに鋼板の端部で防水シートに傷を付け、そこから防水シートに穴があき漏水の生じる危険性があった。特に出入隅角においては構造上大きな変形が生じる可能性があり、増し張りシートをあてがっていたとしても、増し張りシートを破り、それと一体化されている防水シートにも亀裂を生じさせる可能性があった。
【０００４】
本発明は、これらの問題点を解決し、増し張りシートを出入隅角の合成樹脂被覆鋼板の上に直接設ける必要もなく、躯体の変形が繰り返し生じても出入隅角において防水シートに亀裂をできるだけ生じさせないようにするための防水シート固定用役物及びこの役物を使用する防水施工方法を提供することを目的とするものである。
【０００５】
【課題を解決するための手段】
本発明が講じた手段は出入隅角に使用する防水シート固定用役物であって、断面がほぼＬ字状となる腕杆の一端を交点として他端側を各出隅又は入隅に沿って三方向に向かってそれぞれ突出させて三方腕型を一体に形成し、その表面に熱可塑性高分子材料を被覆してなるものであって、その各出隅又は入隅が当接するＬ字折曲部分に切り込みが先端から交点付近まで設けられ、交点周囲付近では切り込みは設けず一体的に形成したり、交点に切り抜き穴を設けたものであり、また、この防水シート固定用役物を各出入隅角にあてがいビスなどで該役物を下地躯体に直接固定するか若しくは防水シートの上から下地躯体に固定し、該役物の上に平面部又は壁面部より展延された熱可塑性高分子材料からなる防水シートを被覆し、役物の表面と防水シートの裏面とを熱融着又は溶剤溶着によって接合し、平面部においては必要に応じて防水シートをビスなどの固定具で機械的に固定するか接着剤で固定し、壁面部においても必要に応じて防水シートをビスなどの固定具で機械的に固定するか又は接着剤で固定する施工方法である。
【０００６】
【発明の実施の形態】
本発明の防水シート固定用役物Ａを図面に基づいて説明すると、方向が異なる立ち上がり壁となる二つの壁面部Ｘ、Ｙと、底面，足踏み面や天端面となる平面部Ｚとの所謂方向が異なる三つの平面（三平面）の交点によって構成される出入隅角に使用する役物であって、断面がほぼＬ字状となる腕杆１を用い、各腕杆１の一端を交点２とし他端が各出隅又は入隅に沿って三方向に向かってそれぞれ突出した三方腕型ａを一体に形成し、その表面に熱可塑性高分子材料３を被覆してなるものであり、さらには各出隅又は入隅に当接するＬ字折曲部分においては切り込み４が先端から交点付近まで設けられ、交点周囲付近では切り込みは設けず一体的に形成されているもの、およびその交点に切り抜き穴５が設けられているものである。
【０００７】
本発明の三方腕型ａは断面がほぼＬ字状となる腕杆１が三平面の交点から互いに略直交状である各出隅又は入隅に沿って三方向に突出したいわゆる縦横高さ方向の三軸状に一体に形成したもので、この三方腕型ａに、又は後述する切り込み４、切り抜き穴５、ビス穴６を設ける場合には三方腕型ａにそれらに対応する部分を設けた状態で熱可塑性高分子材料３を被覆せしめ、敷設する防水シートＢと熱融着又は溶剤溶着させる。
腕杆１は鉄、ステンレススチール、アルミニウム、銅等の金属や硬質合成樹脂からなり、三方腕型ａを形成した場合に断面がほぼＬ字状となるもので、そのＬ字折曲部分に接合交点２となる基端側を残して先端から基端付近までに切り込み４’を設け、また一体化された交点２となる基端側には切り抜き穴５’やビス穴６’を設け、このような腕杆１を互いに接合して三方腕型ａを形成する。
【０００８】
熱可塑性高分子材料３は例えば懸濁重合によって得られたポリ塩化ビニル樹脂、乳化重合によって得られたペースト用ポリ塩化ビニル樹脂、エチレン−酢酸ビニル共重合樹脂、クロロスルフォン化ポリエチレン樹脂、塩素化ポリエチレン樹脂、未加硫のエチレン−プロピレンゴム、未加硫のブチルゴム、ポリエチレン樹脂、ポリプロピレン樹脂等のオレフィン系樹脂、エチレンとアクリル酸エステルの共重合樹脂などの高分子材料の他、硬質相と軟質相とを有する熱可塑性エラストマーも使用可能で、これら熱可塑性エラストマーとしては塩化ビニル系熱可塑性エラストマー、オレフィン系熱可塑性エラストマー、ウレタン系熱可塑性エラストマー、ポリエステル系熱可塑性エラストマー、スチレン系熱可塑性エラストマー等があげられる。また、これら熱可塑性高分子材料には公知の配合剤を添加することも可能で、例えば、可塑剤、安定剤、有機・無機充填剤、紫外線吸収剤、帯電防止剤、着色剤、減粘剤、増粘剤、消泡剤などを適宜添加して使用することも可能である。更にこれら熱可塑性高分子材料同士を混合したり、重合時に共重合させた高分子材料であっても良い。いずれの材料であっても熱によって溶融又は軟化するか、溶剤に溶解し、防水シートと接着できる熱可塑性高分子材料であるが、特に防水シートと同素材の熱可塑性高分子材料が好ましい。
【０００９】
熱可塑性高分子材料３の被覆は可塑剤、安定剤等の添加剤が添加されたポリ塩化ビニル樹脂ペーストやその他溶剤などに溶解させた液状の高分子材料をディッピングしたり、スプレー等でコーティングをしたり、或いは粉体焼き付けなどで全面に被覆する。防水シート固定用役物Ａを下地躯体に固定するためのビス穴６となる穴６’を三方腕型ａ又は腕杆１に予め設けておくと、穴６’の表面も高分子材料で被覆することができ、役物全体で腕杆１の下地がどこにも露出しないので耐食性に強くなるため、ビス穴を予め設けて、その後熱可塑性高分子材料をディッピング又はコーティング等の方法によって被覆することがとりわけ好ましい。いずれの被覆方法においても少なくとも防水シートＢと接する面には熱可塑性高分子材料３が被覆されている。
【００１０】
本発明で出隅とは二つの面が出会ってできる凸状の連続線、入隅とは二つの面が出会ってできる凹状の連続線、出入隅角とは出隅・入隅同志又は相互が出会う箇所をいい、また、熱融着とは熱風等によって熱可塑性高分子材料３及び防水シートＢを溶融又は軟化させてお互いを接合する方法いい、溶剤溶着とは熱可塑性高分子材料３及び防水シートＢを溶剤で溶解させてお互いを接合する方法をいい、本発明では防水シート固定用役物Ａと防水シートＢとを強固に接合させるために、熱融着又は溶剤溶着によって接合することが好ましい。
【００１１】
防水シート固定用役物Ａの形状は、断面がほぼＬ字状となる腕杆１を基端側を中心に交点２となるように縦軸、横軸、高さ軸の三軸状に約１００〜５００ｍｍ程度の展延した形状が基本であり、別の形態としてこの基本形状のＬ字状折曲部分に切り込み４がそれぞれ設けられており、この切り込み４は縦軸、横軸、高さ軸の交点２となる基端側を約４０ｍｍ残して先端部まで設け、中心とした交点２に切り抜き穴５を設ける場合と設けない場合がある。折り曲げ部分に切り込み４を設けることにより、出隅・入隅同志又は相互によって形成される角度が９０°以外である出入隅角に対しても柔軟に対応して下地に密着固定させることができる。また、中心とした交点２に切り抜き穴５を設けることによって出入隅角の頂点が９０°の角度がとれていない場合に、切り抜き穴５が出入隅角に対して密着固定を可能にすることができる。切り抜き穴５の大きさは密着固定するために少なくとも直径１０ｍｍ以上、また切り抜き穴が大きすぎても防水シートの未接着部が増えて浮いてしまうため３０ｍｍ以下とすることが好ましい。
【００１２】
切り込み４の幅があまり小さいと出隅・入隅同志又は相互によって形成される様々な角度に十分に対応できなくなる恐れがあり、大きすぎると防水シートＢが接合できない部分が増え、そのためそれぞれの出入隅角において防水シートＢが浮いてしまうので、切り込み４の幅としては折り曲げ部分からそれぞれ３ｍｍ〜２０ｍｍ程度とすることが好ましい。切り込み４を入れた腕杆１の一辺の幅は防水シートＢと強固に接合するために最低３０ｍｍ以上あることが望まれ、あまり広すぎても役物が重くなり持ち運びが不便となること及び熱融着又は溶剤溶着を行う面積が増え施工に手間がかかるため約１００ｍｍ以下の幅とすることが好ましい。また、腕杆１の厚さは薄すぎると防水シートＢを固定するための強度が得られず、厚すぎても堅くなるため自在に変形対応することができなくなり、更に防水シートＢがその部分で盛り上がってしまうため、腕杆１の厚さとしては０．５〜１．６ｍｍ、熱可塑性高分子材料３を被覆した全体の厚さとしては１．０〜４．０ｍｍ程度とすることが好ましい。
【００１３】
該三方腕型ａの成型方法は特に限定されず、金属の場合はプレス成形で全体を一体成形したり、金属板を断面Ｌ字状に折り曲げて所定の形状の腕杆１を形成し（図６，図８，図１０，図１１）、これらを溶接によって成型したり、平面Ｌ字平板状のもの（図７，図９，）を溶接して一体に成形しても良く、合成樹脂の場合は射出成形や溶着などで形成する。
【００１４】
Ｌ字状の折り曲がり方向は設置する出入隅角に合わせて折り曲げ、例えば縦軸、横軸、高さ軸すべてが出隅である出入隅角、または縦軸、横軸、高さ軸すべてが入隅である出入隅角においてはすべて同一側に折り曲げ（図１）、二軸が入隅で一軸が出隅である出入隅角においてはＬ字状の折り曲げ方向は出隅軸と入隅軸では反対になるように折り曲げる（図２）。具体的に例示すると、例えばプール水槽底面の四隅の出入隅角ではＬ字状の折り曲げ方向はすべて内側に折り曲げられ、例えば、図１２，図１３のようにプール水槽に足踏み台Ｌ等がある場合には水槽底面Ｚと足踏み台Ｌとで形成される入隅ではＬ字状の折り曲げ方向は内側に折り曲げられるが、足踏み面Ｚと立ち上がり壁面Ｙとで形成される出隅においては外側に折り曲げられ、その設置する場所に応じて適宜対応せしめる。
【００１５】
本発明において使用する防水シートＢは公知の熱可塑性高分子材料からなる防水シートを用いることができ、例えばポリ塩化ビニル樹脂製防水シート、エチレン−酢酸ビニル共重合樹脂製防水シート、クロロスルフォン化ポリエチレン樹脂製防水シート、塩素化ポリエチレン樹脂製シート、エチレンとアクリル酸エステルとの共重合樹脂製防水シート、アクリル系樹脂製防水シート、非加硫のエチレン−プロピレンゴム製防水シート、非加硫のブチルゴム製防水シートなどが好ましく使用できるが、これらに限定されず本発明の防水シート固定用役物Ａと熱融着または溶剤溶着が可能な熱可塑性高分子材料製の防水シートであれば特に制限されない。
【００１６】
本発明の防水シート固定用役物Ａは立ち上がり壁のある屋上の出入隅角やプール底面の出入隅角やプールの足踏み台の出入隅角、蓄熱槽の出入隅角、その他、防水施工する場所において出入隅角が存在する箇所であれば使用することができる。
【００１７】
次に、本発明の防水シート固定用役物Ａを使用した防水シートＢの施工例を説明すると、出入隅角がある箇所に防水シート固定用役物Ａを設置するには、防水シートを敷設する前に直接下地躯体に該固定用役物を取り付け、その上に平面部Ｚ又は立ち上がり壁Ｘ，Ｙからの防水シートを被覆するか、平面部又は立ち上がり壁面部の一方に防水シートを敷設してその上から該固定用役物を載置する。
【００１８】
防水シート固定用役物Ａを直接下地躯体へ設置する場合は、平面部及び／又は立ち上がり壁の防水シートを固定用役物の上に被覆し、固定用役物の表面と被覆される防水シートの裏面とを熱融着又は溶剤溶着によって接合し、その上に平面部又は立ち上がり壁からの防水シートを展延して、防水シート同士をラップさせ熱融着又は溶剤溶着によって接合する。
【００１９】
防水シートＢの上に防水シート固定用役物Ａを設置する場合は、一方からの防水シートを仮置き敷きした後、固定用役物の上からビスを防水シートに貫通させ下地躯体へ打ち込み、防水シートと固定用役物を設置すると共にその上に他方からの防水シートを固定用役物の上に被覆し、固定用役物の表面と上に被覆された防水シートの裏面とを熱融着又は溶剤溶着によって接合する。
【００２０】
防水シートＢと防水シート固定用役物Ａの位置関係は設置する場所において任意に設定することができ、例えば、コンクリート又はモルタル製のプール水槽や蓄熱槽等においては予め防水シート固定用役物を下地躯体に設置してその上に防水シートを被覆し、建物の屋上などにおいては平面部及び／又は立ち上がり壁の防水シートを出入隅角に敷設した後、防水シート固定用役物を設置することが好ましい。
【００２１】
出入隅角での本発明の防水シート固定用役物を使用し防水シートを敷設施工する方法は特に限定されないが、一例を挙げると、図１２のように出入隅角に予め防水シート固定用役物Ａをビス８で下地躯体に固定し、入隅、出隅には伸縮を考慮し１〜５ｍｍの目地７を開けて出入隅角以外の入隅、出隅には従来と同様に断面がほぼＬ型合成樹脂被覆鋼板Ｃをあてがいビス８などで固定し、防水シート固定役物ＡとＬ型合成樹脂被覆鋼板Ｃとの目地部７には増し張りシートや絶縁用紙テープなど目地テープＤを貼り、鋼板Ｃの端部によって防水シートＢに傷がつかないようにする。その後図１３のように平面部の防水シートＢを入隅まで敷設し、出入隅角の防水シート固定用役物Ａ及びＬ型の合成樹脂被覆鋼板Ｃに熱融着又は溶剤溶着によって接合し、立ち上がり壁の防水シートを平面部の防水シート上まで展延して敷設すると共に、防水シート固定用役物及びＬ型の合成樹脂被覆鋼板、平面部の防水シートに熱融着又は溶剤溶着によって接合する。防水シート固定用役物を固定した出入隅角にはその形状に応じた熱可塑性樹脂からなる成型体Ｅを防水シートＢの上からあてがい、その部分の防水シートＢと該成型体Ｅとを熱融着又は溶剤溶着によって接合する。
【００２２】
他の一例としては、図１４のように平面部Ｚに敷設される防水シートＢを立ち上がり壁Ｙの下方まで展延し、出入隅角において防水シート固定用役物Ａをその防水シートＢの上に載置し、ビス８等で防水シートを貫通させて下地躯体に固定し、入隅や出隅には前記のＬ型の合成樹脂被覆鋼板Ｃをあてがい同様にビス８などで下地に固定し、防水シート固定用役物ＡとＬ型の合成樹脂被覆鋼板Ｃとは１〜５ｍｍ程度の目地７を開け、目地部７に増し張りシートや絶縁用紙テープなどの目地テープＤを貼り、防水シートに傷が付かないようにする。次に立ち上がり壁Ｙの防水シートＢを平面部Ｚの防水シートＢまで展延し、防水シート固定用役物Ａ及びＬ型の合成樹脂被覆鋼板Ｃ、平面部の防水シートＢと熱融着又は溶剤溶着によって接合する方法などによって防水施工することができる。防水シート固定用役物を固定した出入隅角では前記と同様に成型体Ｅをあてがい接合する。
【００２３】
防水シートＢは通常厚さが０．８〜３．０ｍｍ、幅が５００〜２０００ｍｍの長尺状のシートを使用する。防水シート同士の接合は隣接する防水シートの端部同士を３０〜１００ｍｍ程度ラップさせて熱融着又は溶剤溶着によって接合してつなぎ合わせていく。プール水槽等においては出入隅角に固定した防水シート固定用役物及び出隅、入隅の合成樹脂被覆鋼板Ｃのみで固定し、建物屋上や蓄熱槽などでは平面部は合成樹脂被覆された円盤状のディスク盤を頭にしてビスなどをディスク盤の上から防水シートを貫通させ、下地躯体まで打ち込み防水シートを固定すると共にディスク盤を完全に覆うことのできる保護シートで被覆しディスク盤及び防水シートと熱融着又は溶剤溶着によって接合し止水処理する。
【００２４】
尚、立ち上がり壁の防水シートを平面部まで展延した後、防水シート固定用役物を載置してビスなどで下地に固定し、平面部の防水シートを立ち上がり壁の途中まで展延して防水シート固定用役物を完全に被覆すると共にその固定用役物の表面と防水シートの裏面とを熱融着又は溶剤溶着によって接合し、平面部の防水シートの端部は立ち上がり壁の防水シートと熱融着又は溶剤溶着によって接合しても良い。
【００２５】
【実施例】
次に、本発明の具体的な実施例を挙げて説明する。
（防水シート固定用役物の作製）
厚さ０．８ｍｍで長さ１６０ｍｍ、Ｌ字の１片の幅が６０ｍｍの断面がほぼＬ字状に折り曲げられた鋼板からなる三つの腕杆を基端部を交点に縦軸、横軸、高さ軸の三軸方向に突出するように切断し溶接してつなぎ合わせて三方腕型を一体に形成し、この三方腕型の交点から６０ｍｍの位置からそれぞれの先端部までＬ字状折曲部分に各々５ｍｍの切り込みを入れる。また、交点にはほぼ直径が２０ｍｍの円形状のくり抜き穴を設ける。Ｌ字の折り曲げ方向は、縦軸、横軸、高さ軸すべてが出隅である出入隅角、または縦軸、横軸、高さ軸すべてが入隅である出入隅角においてはすべて同一側に折り曲げる。二軸が入隅で一軸が出隅である出入隅角においては出隅軸と入隅軸とでは折り曲げ方向が反対となるように折り曲げる。また、それぞれ腕杆のＬ字状に折り曲げられた各片には中心点とは反対の端末から３０ｍｍと１００ｍｍの位置に直径５ｍｍのビスを打ち込むためのビス穴を設ける。ビス穴はＬ字状の折り曲げ各片のほぼ中心線上に設けるようにする。
【００２６】
次に、上記の切り込み，くり抜き穴，ビス穴を設けた三方腕型を下記配合の塩化ビニル樹脂ペーストをディッピングして、塩化ビニル樹脂ペーストを全面に厚さ１．０ｍｍコートし、１８５℃のオーブンにて該ペーストをゲル化させて防水シート固定用役物を作製した。

【００２７】
（プール水槽内の出入隅角での防水施工）
プールの周囲の一部に足踏み台が設けられているプール水槽にシート防水工法によって防水施工を行う。
プール水槽四隅及び三軸がすべて入隅である足踏み台の出入隅角には腕杆のＬ字状折曲がすべて同一側に折り曲げられた防水シート固定用役物を用いて、くり抜き穴を出入隅角の頂点にあてがい、それぞれの壁面及び底面にＬ字状の腕杆部をぴったりと合わせてあてがい、ビス穴にあわせて下地躯体にドリルで穴を開けプラグを差し込んだ後ビスを打ち込み、防水シート固定用役物を水槽四隅及び足踏み台の出入隅角に固定した。
【００２８】
また、二軸が入隅で一軸が出隅である足踏み台の出入隅角では足踏み面と水槽壁面との間の入隅及び足踏み台立ち上がり面と水槽壁面との間の入隅では外側方向に折り曲げられ、足踏み面と足踏み台の立ち上がり面との間の出隅においては内側方向に折り曲げられた防水シート固定用役物を使用し、くり抜き穴を出入隅角の頂点にあてがい、それぞれの壁面及び底面にＬ字状の腕杆部をぴったりと合わせてあてがい、ビス穴に合わせて下地躯体にドリルで穴を開けプラグを差し込んだ後ビスを打ち込み、防水シート固定用役物を水槽四隅及び足踏み台の出入隅角に固定した。
【００２９】
次に厚さ１．５ｍｍの中間にガラス繊維製クロスが積層された幅１２００ｍｍ、長さ２５ｍの可塑化塩化ビニル樹脂製防水シートを水槽内全面に敷設する。
まず、水槽底面に防水シートの端部を４０ｍｍラップさせ熱融着又は溶剤溶着によって防水シート同士を接合し、水槽底面周囲にぴったりと合わせて敷設施工する。水槽底面の四隅コーナーに取り付けられた防水シート固定用役物の表面と防水シート裏面とは熱融着又は溶剤溶着によって接合する。次に水槽壁面及び足踏み台に防水シートを敷設し、水槽底面の防水シートと４０ｍｍラップさせて接合する。水槽底面と同様に防水シート固定役物を設置した箇所においては、その表面を被覆する防水シートの裏面と熱融着又は溶剤溶着によって接合する。
【００３０】
基本的に水槽の壁面が四面あったら、それぞれ一面の壁面ごとに防水シートを水槽底面まで敷設して４０ｍｍラップさせ、隣接する二面の壁面出入隅角においては何れか一方の壁面に敷設している防水シートを隣接する壁面に４０ｍｍラップさせて展延し熱融着又は溶剤溶着によって接合する。尚、出入隅角以外の防水シートの固定方法は、通常の二平面からなる入隅・出隅には断面がほぼＬ型状の可塑化塩化ビニル樹脂被覆鋼板をそれぞれの入隅・出隅にあてがい、下地躯体へビスで固定し、その上に防水シートを被覆し熱融着又は溶剤溶着によって接合する。
【００３１】
また、出入隅角にはその出入隅角の形状に成形された一辺の長さが約５０ｍｍの可塑化塩化ビニル樹脂成型体を防水シートの上からあてがい、出入隅角付近の防水シートと熱融着又は溶剤溶着によって接合した。
【００３２】
本実施例で溶剤溶着する場合はテトラヒドロフランを主体とした溶剤を使用し、熱融着で接合する場合は２００〜３００℃の熱風を当ててシートを軟化させて接合した。
また、防水シートの端末部や保護シートの周囲、コーナー部分に接合する成形体の周囲には可塑化塩化ビニル樹脂が溶解されているシーラーを塗布してより水密性を高めた。
【００３３】
【発明の効果】
本発明の防水シート固定用役物を用いると、地震などの震動或いは下地躯体自体の伸縮によって下地躯体が動いたときでも防水シートに傷を付けることがなく、防水シートの穴あきによる漏水の危険性もなくなると共に防水シートと防水シート固定用役物とが容易に且つ強固に接合できる。
【００３４】
しかも、本防水シート固定用役物の三方腕型には、各腕杆における出隅又は入隅が当接するＬ字折曲部分に切り込みが他端から交点付近まで設けられているので、出入隅角の壁面部、平面部がぴったりと９０°に形成されていなくても、切り込みによって多少の角度変化には適宜対応できるためぴったりと壁面部や平面部と役物を固定することができる。従って、その上に被覆する防水シートに段差が生じず傷や亀裂が生じにくくなる。
【００３５】
また、各腕杆の交点部分に切り抜き穴を設けることにより、出入隅角の頂点に凹凸があっても綺麗に役物を頂点に合わせて設置することができる。このため出入隅角で防水シートに浮きがなくなり、振動や風圧によって防水シートが動き亀裂が生じたりする危険性も少なくなり、しかも収まりの良い仕上がりとなる。
【００３６】
更に、本防水シート固定用役物の三方腕型に切り込み及び切り抜き穴の両方を設けることにより、一層のこと使用勝手がよく施工工事が容易となる。
【００３７】
また、本発明の防水シート固定用役物を用いることにより、従来のように増し張りシートを出入隅角の鋼板と防水シートの間にあてがう必要もなくなり、よって、出入隅角における防水性並びに施工性が向上する。
【００３８】
また、本発明の防水シート固定用役物を出入隅角にあてがいビスなどで該役物を下地躯体に直接固定するか若しくは防水シートの上から下地躯体に固定し、該役物の上に平面部又は壁面部より展延された熱可塑性高分子材料からなる防水シートを被覆し、役物の表面と防水シートの裏面とを熱融着又は溶剤溶着によって接合し、平面部においては必要に応じて防水シートをビスなどの固定具で機械的に固定するか接着剤で固定し、壁面部においても必要に応じて防水シートをビスなどの固定具で機械的に固定するか又は接着剤で固定することにより、施工工事が簡単となりスピードアップして工期の短縮ができると共に防水性能が向上した施工状態になる。
【図面の簡単な説明】
【図１】本発明の防水シート固定用役物の斜視図
【図２】他の実施例の防水シート固定用役物の斜視図
【図３】他の実施例の防水シート固定用役物の斜視図
【図４】他の実施例の防水シート固定用役物の斜視図
【図５】図３の５−５線に沿える拡大断面図
【図６】三方腕型の形成状態の斜視図
【図７】他の三方腕型の形成状態の斜視図
【図８】他の三方腕型の形成状態の斜視図
【図９】他の三方腕型の形成状態の斜視図
【図１０】他の三方腕型の形成状態の斜視図
【図１１】他の三方腕型の形成状態の斜視図
【図１２】防水シートを敷設する前の施工状態の斜視図
【図１３】防水シートを敷設した状態の一部切欠する斜視図
【図１４】他の防水シートを敷設した状態の一部切欠する斜視図
【符号の説明】
Ａは防水シート固定用役物、Ｂは防水シート、Ｘ，Ｙは壁面部、Ｚは平面部、ａは三方腕型、１は腕杆、２は交点、３は熱可塑性高分子材料、４は切り込み、５は切抜き穴、８はビスである。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an accessory for fixing a waterproof sheet to be installed at the entrance and exit corners on a rooftop, a veranda, a pool water tank, a heat storage tank, and the like, and a waterproof sheet construction method using the accessory. is there.
[0002]
[Prior art]
Conventionally, when constructing a waterproof sheet on the entrance and exit corners composed of the bottom surface, the stepping surface and the top surface of the ceiling and the wall surface of the rising wall on the rooftop and veranda of the building, pool water tank, heat storage tank, etc. , Synthetic resin-coated steel sheets having a substantially L-shaped cross section are individually applied along three protruding corners or entering corners, and then the synthetic resin-coated steel sheets do not overlap each other at the entering / exiting corners. The synthetic resin-coated steel sheet was cut and butted so that the base casing was not exposed in the vicinity of the sheet, and a stretch sheet was joined to the steel sheet surface at the butting intersection so as to cover the cut part, and a waterproof sheet was laid on it. .
[0003]
[Problems to be solved by the invention]
In the conventional method, the three steel plates are cut and faced at the entrance and exit angles, so when the ground frame moves due to the earthquake vibration and the expansion and contraction of the ground frame itself, the waterproof sheet is scratched at the edge of the steel plate, There was a risk of leaking water from a hole in the waterproof sheet. In particular, there is a possibility that a large structural deformation may occur at the entrance and exit corners, and even if an additional sheet is applied, the additional sheet may be broken and a waterproof sheet integrated therewith may be cracked. there were.
[0004]
The present invention solves these problems, and it is not necessary to provide an additional tension sheet directly on the synthetic resin-coated steel sheet at the entry / exit corner, and the waterproof sheet is cracked at the entry / exit angle even if the casing is repeatedly deformed. It is an object of the present invention to provide a waterproof sheet fixing accessory for preventing the occurrence of this as much as possible and a waterproof construction method using this accessory.
[0005]
[Means for Solving the Problems]
The means taken by the present invention is a waterproof sheet fixing tool used at the entrance / exit corners, with one end of the armband having a substantially L-shaped cross section as an intersection and the other end along each exit / entry corner The three-way arm mold is integrally formed by projecting in three directions, and the surface thereof is coated with a thermoplastic polymer material, and the L-shaped folds of which the protruding corners or the entering corners are in contact with each other. A cut is provided in the curved part from the tip to the vicinity of the intersection, and it is formed integrally without providing a cut around the intersection, or a cutout hole is provided at the intersection. The accessory is fixed directly to the base frame with a screw applied to the entrance / exit corner, or fixed to the base frame from the top of the waterproof sheet, and the thermoplastic high-temperature material extended from the flat surface or the wall surface on the accessory. Cover with a waterproof sheet made of molecular material to protect the surface of the accessory Join the back of the sheet by heat fusion or solvent welding, and fix the waterproof sheet mechanically with screws or other fixtures as needed on the flat surface, or with the adhesive, and also on the wall surface According to the construction method, the waterproof sheet is mechanically fixed with a fixing tool such as a screw or is fixed with an adhesive.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
The waterproof sheet fixing accessory A according to the present invention will be described with reference to the drawings. The so-called direction of two wall surface portions X and Y serving as rising walls having different directions and a flat surface portion Z serving as a bottom surface, a stepping surface, and a top end surface. Is an accessory used for an entrance / exit corner constituted by the intersections of three planes (three planes) different from each other, and an arm rod 1 having a substantially L-shaped cross section is used, and one end of each arm rod 1 is connected to the intersection point 2 The other end is integrally formed with a three-way arm type a that protrudes in three directions along each protruding corner or entering corner, and the surface thereof is coated with the thermoplastic polymer material 3, In the L-shaped bent part that abuts each protruding corner or entering corner, the notch 4 is provided from the tip to the vicinity of the intersection, and the notch is not provided in the vicinity of the intersection and is cut out at the intersection. A hole 5 is provided.
[0007]
The three-way arm type a of the present invention is a so-called vertical and horizontal height direction in which the arm rod 1 having a substantially L-shaped cross section protrudes in three directions from the intersections of the three planes along the protruding or entering corners that are substantially orthogonal to each other The three-way arm mold a is provided integrally with the three-way arm mold a, or when a cutout 4, a cutout hole 5 and a screw hole 6 described later are provided, corresponding parts are provided in the three-way arm mold a. In this state, the thermoplastic polymer material 3 is coated, and heat-sealed or solvent-welded with the waterproof sheet B to be laid.
The armband 1 is made of a metal such as iron, stainless steel, aluminum, or copper, or a hard synthetic resin. When the three-way arm type a is formed, the cross section is substantially L-shaped, and is joined to the L-shaped bent portion. A notch 4 'is provided from the distal end to the vicinity of the proximal end, leaving the base end side that becomes the intersection point 2, and a cutout hole 5' and a screw hole 6 'are provided on the base end side that becomes the integrated intersection point 2, Such armbands 1 are joined together to form a three-way arm type a.
[0008]
The thermoplastic polymer material 3 includes, for example, a polyvinyl chloride resin obtained by suspension polymerization, a polyvinyl chloride resin for paste obtained by emulsion polymerization, an ethylene-vinyl acetate copolymer resin, a chlorosulfonated polyethylene resin, and a chlorinated polyethylene. Resin, unvulcanized ethylene-propylene rubber, unvulcanized butyl rubber, olefinic resin such as polyethylene resin and polypropylene resin, polymer material such as ethylene and acrylate copolymer resin, hard phase and soft phase These thermoplastic elastomers include vinyl chloride-based thermoplastic elastomers, olefin-based thermoplastic elastomers, urethane-based thermoplastic elastomers, polyester-based thermoplastic elastomers, and styrene-based thermoplastic elastomers. It is done. In addition, known compounding agents can be added to these thermoplastic polymer materials, for example, plasticizers, stabilizers, organic / inorganic fillers, ultraviolet absorbers, antistatic agents, colorants, viscosity reducers. Further, a thickener, an antifoaming agent and the like can be appropriately added and used. Further, these thermoplastic polymer materials may be mixed with each other or may be a polymer material copolymerized at the time of polymerization. Any material is a thermoplastic polymer material that can be melted or softened by heat, dissolved in a solvent, and bonded to a waterproof sheet, and a thermoplastic polymer material that is the same material as the waterproof sheet is particularly preferable.
[0009]
The thermoplastic polymer material 3 can be coated by dipping a polyvinyl chloride resin paste to which additives such as plasticizers and stabilizers are added and a liquid polymer material dissolved in other solvents, or by coating with a spray or the like. Or the whole surface is covered by powder baking or the like. If a hole 6 ′ to be a screw hole 6 for fixing the waterproof sheet fixing accessory A to the base frame is provided in the three-way arm mold a or the armband 1, the surface of the hole 6 ′ is also covered with a polymer material. Since the base of the armband 1 is not exposed anywhere in the entire object, the corrosion resistance is enhanced. Therefore, a screw hole is provided in advance, and then the thermoplastic polymer material is coated by a method such as dipping or coating. Is particularly preferred. In any of the coating methods, at least the surface in contact with the waterproof sheet B is coated with the thermoplastic polymer material 3.
[0010]
In the present invention, the exit corner is a convex continuous line formed by the two surfaces meeting each other, the entrance corner is a concave continuous line formed by the two surfaces meeting each other, and the input / output corner angle is defined by The place where they meet is referred to. Thermal fusion is a method in which the thermoplastic polymer material 3 and the waterproof sheet B are melted or softened by hot air or the like and bonded together. Solvent welding is the thermoplastic polymer material 3 and waterproof. The sheet B is dissolved with a solvent and bonded to each other. In the present invention, in order to firmly bond the waterproof sheet fixing accessory A and the waterproof sheet B, the sheet B may be bonded by heat fusion or solvent welding. preferable.
[0011]
The shape of the waterproof sheet fixing accessory A is approximately three in the shape of a vertical axis, a horizontal axis, and a height axis so that an arm hook 1 having a substantially L-shaped cross section is an intersection 2 centering on the base end side. An extended shape of about 100 to 500 mm is basic, and as an alternative form, an incision 4 is provided in an L-shaped bent portion of the basic shape, and the incision 4 has a vertical axis, a horizontal axis, and a height. There may be a case where the base end side that is the intersection 2 of the shaft is left up to about 40 mm and is provided up to the distal end, and the cutout hole 5 is provided or not provided at the center intersection 2. By providing the cuts 4 in the bent portion, it is possible to flexibly cope with the corners of the corners formed by the corners of the corners, corners of the corners of the corners, or mutual angles other than 90 °, and can be firmly fixed to the base. Further, by providing the cutout hole 5 at the intersection 2 as the center, the cutout hole 5 can be firmly fixed to the entrance / exit corner when the apex of the entrance / exit corner is not 90 °. it can. The size of the cutout hole 5 is preferably at least 10 mm in diameter for tightly fixing, and 30 mm or less because the unadhered portion of the waterproof sheet increases and floats even if the cutout hole is too large.
[0012]
If the width of the notch 4 is too small, there is a risk that it will not be able to sufficiently cope with various angles formed by the corners and corners of each other or each other, and if it is too large, the portion where the waterproof sheet B cannot be joined increases. Since the waterproof sheet B floats at the corner, the width of the cut 4 is preferably about 3 mm to 20 mm from the bent portion. The width of one side of the armband 1 with the cuts 4 is preferably at least 30 mm in order to be firmly joined to the waterproof sheet B. Even if it is too wide, the accessory becomes heavy and inconvenient to carry and heat Since the area for performing fusion welding or solvent welding increases and the construction takes time, the width is preferably about 100 mm or less. Also, if the thickness of the armband 1 is too thin, the strength for fixing the waterproof sheet B cannot be obtained, and if it is too thick, it becomes stiff and cannot be deformed freely. Therefore, the thickness of the armband 1 is preferably 0.5 to 1.6 mm, and the total thickness covered with the thermoplastic polymer material 3 is preferably about 1.0 to 4.0 mm. .
[0013]
The molding method of the three-way arm mold a is not particularly limited. In the case of metal, the whole is integrally formed by press molding, or a metal plate is bent into an L-shaped cross section to form the armband 1 having a predetermined shape (see FIG. 6, FIG. 8, FIG. 10 and FIG. 11), these may be molded by welding, or a flat L-shaped flat plate (FIG. 7, FIG. 9) may be molded integrally. In some cases, it is formed by injection molding or welding.
[0014]
The L-shaped bending direction is bent according to the installation / exit corner, for example, the vertical / horizontal axis / height axis is the exit / exit corner, or the vertical / horizontal axis / height axis is all The entrance and exit corners are all bent on the same side (Fig. 1), and in the entrance and exit corners where two axes are the entrance corner and one axis is the exit corner, the L-shaped bending direction is the exit corner axis and the entrance corner axis. Then, it is bent so that it may become opposite (FIG. 2). Specifically, for example, in the four corners at the bottom of the pool water tank, the L-shaped folding directions are all folded inward, for example, when there is a footrest L or the like in the pool water tank as shown in FIGS. At the entrance corner formed by the water tank bottom Z and the footrest L, the L-shaped folding direction is folded inward, but at the exit corner formed by the footstep Z and the rising wall surface Y, it is folded outward. Depending on the place where it is installed, it will be handled appropriately.
[0015]
As the waterproof sheet B used in the present invention, a waterproof sheet made of a known thermoplastic polymer material can be used. For example, a waterproof sheet made of polyvinyl chloride resin, a waterproof sheet made of ethylene-vinyl acetate copolymer resin, chlorosulfonated polyethylene Resin waterproof sheet, chlorinated polyethylene resin sheet, ethylene / acrylic acid ester resin waterproof sheet, acrylic resin waterproof sheet, non-vulcanized ethylene-propylene rubber waterproof sheet, non-vulcanized butyl rubber However, the present invention is not limited to these, and is not particularly limited as long as it is a waterproof sheet made of a thermoplastic polymer material that can be heat-sealed or solvent-welded with the waterproof sheet fixing accessory A of the present invention. .
[0016]
The waterproof sheet fixing accessory A according to the present invention is used for waterproofing, such as the roof entrance / exit corner, the entrance / exit corner of the bottom of the pool, the entrance / exit corner of the pool footrest, the entrance / exit corner of the heat storage tank, etc. If there is a corner where the entrance and exit corners exist, it can be used.
[0017]
Next, a construction example of the waterproof sheet B using the waterproof sheet fixing accessory A of the present invention will be described. In order to install the waterproof sheet fixing accessory A at a place with an entrance / exit corner, the waterproof sheet is laid. Before mounting, attach the fixing tool directly to the base frame and cover it with a waterproof sheet from the flat surface Z or the rising walls X and Y, or lay a waterproof sheet on one of the flat surface or the rising wall surface. The fixing tool is placed on the lever.
[0018]
When the waterproof sheet fixing accessory A is installed directly on the base frame, the waterproof sheet of the flat portion and / or the rising wall is covered on the fixing accessory and the surface of the fixing accessory is covered. The waterproof sheet is bonded to the back surface of the sheet by thermal fusion or solvent welding, and a waterproof sheet from the flat surface or the rising wall is spread thereon, and the waterproof sheets are wrapped to be bonded by thermal fusion or solvent welding.
[0019]
When installing the waterproof sheet fixing accessory A on the waterproof sheet B, after temporarily placing the waterproof sheet from one side, the screw is passed through the waterproof sheet from the fixing accessory and driven into the base casing. A waterproof sheet and a fixing accessory are installed, and a waterproof sheet from the other side is coated on the fixing accessory, and the surface of the fixing accessory and the back surface of the waterproof sheet coated thereon are thermally fused. Joining by adhesion or solvent welding.
[0020]
The positional relationship between the waterproof sheet B and the waterproof sheet fixing accessory A can be arbitrarily set at the place where it is installed. For example, in a pool tank or a heat storage tank made of concrete or mortar, a waterproof sheet fixing accessory is previously set. Install it on the base frame and cover it with a waterproof sheet. On the rooftop of a building, install a waterproof sheet on a flat part and / or a rising wall at the entrance and exit corners, and then install a waterproof sheet fixing tool. Is preferred.
[0021]
The method for laying and constructing the waterproof sheet using the waterproof sheet fixing tool of the present invention at the entrance / exit corner is not particularly limited. For example, as shown in FIG. Fix the object A to the base frame with screws 8, open and close 1-7mm joints 7 in consideration of expansion and contraction at the entrance and exit corners, and enter and exit corners other than the entrance and exit corners as in the conventional case. The L-type synthetic resin-coated steel plate C is fixed with an attaching screw 8 or the like, and a joint tape D such as a stretched sheet or insulating paper tape is attached to the joint 7 between the waterproof sheet fixing member A and the L-type synthetic resin coated steel plate C. The waterproof sheet B is not damaged by the end of the steel plate C. Then, as shown in FIG. 13, the flat waterproof sheet B is laid to the corner, and joined to the waterproof sheet fixing accessory A and the L-shaped synthetic resin-coated steel sheet C at the corner of the entrance and exit by thermal fusion or solvent welding, The waterproof sheet of the rising wall is extended and laid on the waterproof sheet of the flat part, and joined to the waterproof sheet fixing tool and the L-shaped synthetic resin-coated steel sheet and the flat sheet of the waterproof sheet by heat fusion or solvent welding. To do. A molded body E made of a thermoplastic resin corresponding to the shape is applied from the top of the waterproof sheet B to the entrance / exit corner to which the waterproof sheet fixing accessory is fixed, and the waterproof sheet B and the molded body E in the portion are heated. Joining by fusion or solvent welding.
[0022]
As another example, as shown in FIG. 14, the waterproof sheet B laid on the flat surface Z is extended to the lower part of the rising wall Y, and the waterproof sheet fixing accessory A is placed on the waterproof sheet B at the entrance / exit corner. Is fixed to the base casing with a screw 8 or the like, and the L-shaped synthetic resin-coated steel plate C is applied to the entrance corner and the exit corner, and similarly fixed to the base with the screw 8 or the like. The waterproof sheet fixing accessory A and the L-shaped synthetic resin-coated steel sheet C are opened with a joint 7 of about 1 to 5 mm, and a joint sheet D such as a stretched sheet or an insulating paper tape is pasted on the joint 7, and the waterproof sheet Avoid scratching the surface. Next, the waterproof sheet B of the rising wall Y is extended to the waterproof sheet B of the flat part Z, and the waterproof sheet fixing accessory A and the L-type synthetic resin-coated steel sheet C, the flat sheet of the waterproof sheet B and heat-sealing or It can be waterproofed by a method of joining by solvent welding. The molded body E is applied and joined in the same manner as described above at the entrance / exit corner where the waterproof sheet fixing accessory is fixed.
[0023]
As the waterproof sheet B, a long sheet having a thickness of 0.8 to 3.0 mm and a width of 500 to 2000 mm is usually used. To join the waterproof sheets, the end portions of the adjacent waterproof sheets are wrapped by about 30 to 100 mm, and joined together by heat fusion or solvent welding. In a pool water tank, etc., a waterproof sheet fixing accessory fixed at the entrance / exit corner and a synthetic resin-coated steel plate C at the entrance / exit corner are fixed only by a synthetic resin-coated steel plate C. The disk is covered with a protective sheet that can completely cover the disk, while fixing the waterproof sheet by passing a waterproof sheet through the disk from the top of the disk and driving it through to the base frame. It is bonded to the sheet by heat fusion or solvent welding and water-stopped.
[0024]
After extending the waterproof sheet on the rising wall to the flat surface, place the waterproof sheet fixing accessory and fix it on the ground with a screw, etc., and extend the waterproof sheet on the flat wall to the middle of the rising wall. The waterproofing sheet fixing tool is completely covered and the front surface of the fixing tool and the back surface of the waterproofing sheet are joined by heat fusion or solvent welding, and the end of the waterproof sheet in the flat portion is the rising wall waterproof sheet. And may be joined by heat fusion or solvent welding.
[0025]
【Example】
Next, specific examples of the present invention will be described.
(Production of waterproof sheet fixings)
Thickness 0.8mm, length 160mm, L-shaped piece 60mm wide cross section made of steel plates folded in a substantially L shape, the vertical axis, horizontal axis, Cut and weld so that it protrudes in the triaxial direction of the height axis, and join together to form a three-way arm type integrally. From the intersection of this three-way arm type, from the position of 60 mm to each tip part is an L-shaped fold Make 5mm cuts in each part. Further, a circular cut-out hole having a diameter of approximately 20 mm is provided at the intersection. The L-shaped bending direction is the same for all corners where the vertical axis, horizontal axis and height axis are the leading corners, or the corners where the vertical axis, horizontal axis and height axis are all corners. Bend it. At the corner of entry / exit where the two axes are the entrance corner and the one axis is the exit corner, the exit corner axis and the entrance corner axis are bent so that the folding directions are opposite. Each piece of the armband bent into an L shape is provided with a screw hole for driving a screw having a diameter of 5 mm at a position of 30 mm and 100 mm from a terminal opposite to the center point. The screw hole is provided substantially on the center line of each L-shaped piece.
[0026]
Next, the above-mentioned three-way arm type provided with notches, cut-out holes, and screw holes is dipped with a vinyl chloride resin paste having the following composition, and the vinyl chloride resin paste is coated on the entire surface with a thickness of 1.0 mm, and is heated at 185 ° C. The paste was gelled to prepare a waterproof sheet fixing accessory.

[0027]
(Waterproof construction at the entrance and exit corners in the pool tank)
Waterproofing is performed by a waterproof sheet construction method in a pool tank where a footrest is provided around a part of the pool.
The entrance / exit corner of the footrest with all four corners and three axes of the pool aquarium is opened and closed with a waterproof sheet fixing tool in which all the L-shaped folds of the armbands are bent on the same side. Attach to the corner apex, fit the L-shaped armrests exactly on the wall and bottom of each corner, drill a hole in the base frame to fit the screw hole, insert the plug, and then screw in the screw The seat fixing accessory was fixed to the four corners of the water tank and the corner of the footrest.
[0028]
In addition, the entrance / exit corners of the footrest with two axes being the entrance corner and one axis being the exit corner are the outward corners at the entrance corner between the footstep and the aquarium wall and the entrance corner between the footrest rising surface and the aquarium wall. At the corner between the stepped surface and the rising surface of the footrest, use a tarpaulin fixing tool that is folded inward, and place the cutout hole at the apex of the entrance and exit corners. Place the L-shaped armrest on the bottom exactly, and drill the hole in the base frame to insert the plug into the base hole, then drive in the screw, and then attach the waterproof sheet fixing tool to the four corners of the water tank and the footrest Fixed at the corner of the entrance.
[0029]
Next, a waterproof sheet made of plasticized vinyl chloride resin having a width of 1200 mm and a length of 25 m in which a glass fiber cloth is laminated in the middle of a thickness of 1.5 mm is laid on the entire surface of the water tank.
First, the end of the waterproof sheet is wrapped 40 mm on the bottom of the aquarium, the waterproof sheets are joined together by heat fusion or solvent welding, and laid and installed so as to fit closely around the bottom of the aquarium. The surface of the waterproof sheet fixing accessory attached to the four corners on the bottom of the water tank and the back surface of the waterproof sheet are joined together by heat fusion or solvent welding. Next, a waterproof sheet is laid on the wall surface of the water tank and the footstool, and is joined to the waterproof sheet on the bottom surface of the water tank by 40 mm. As with the bottom of the water tank, at the place where the waterproof sheet fixing member is installed, the waterproof sheet is bonded to the back surface of the waterproof sheet covering the surface by heat fusion or solvent welding.
[0030]
Basically, if there are four sides of the aquarium wall, a waterproof sheet is laid down to the bottom of the aquarium for each one wall surface and wrapped 40 mm, and it is laid on either one of the two adjacent wall entrance / exit corners. The waterproof sheet is spread and wrapped by 40 mm on an adjacent wall surface, and joined by heat fusion or solvent welding. In addition, the fixing method of the waterproof sheet other than the entrance / exit corners is such that a plasticized polyvinyl chloride resin-coated steel sheet having a substantially L-shaped cross section is provided at each entrance / exit corner at the entrance / exit corners formed of two normal planes. Applying, fixing to the base casing with screws, covering with a waterproof sheet, and joining by heat fusion or solvent welding.
[0031]
In addition, a plasticized vinyl chloride resin molded body with a side length of about 50 mm formed in the shape of the entrance / exit corner is applied from the top of the waterproof sheet, and the waterproof sheet near the entrance / exit corner is thermally fused. Bonding was performed by adhesion or solvent welding.
[0032]
In the case of solvent welding in this example, a solvent mainly composed of tetrahydrofuran was used, and in the case of joining by heat fusion, hot air of 200 to 300 ° C. was applied to soften the sheets and joined.
In addition, a sealer in which a plasticized vinyl chloride resin is dissolved is applied around the end portion of the waterproof sheet, the protective sheet, and the molded body to be joined to the corner portion, thereby further improving the watertightness.
[0033]
【The invention's effect】
When the waterproof sheet fixing tool of the present invention is used, the waterproof sheet will not be damaged even when the base frame moves due to vibration such as an earthquake or expansion / contraction of the base frame itself, and there is a risk of water leakage due to the perforation of the waterproof sheet In addition, the waterproof sheet and the waterproof sheet fixing accessory can be joined easily and firmly.
[0034]
In addition, the three-way arm type of this waterproof sheet fixing accessory has an incision provided in the L-shaped bent portion where the corner of the arm or the corner of the arm abuts from the other end to the vicinity of the intersection. Even if the corner wall surface portion and the flat surface portion are not exactly 90 °, the wall surface portion, the flat surface portion, and the accessory can be firmly fixed because they can cope with a slight change in angle by cutting. Accordingly, there is no step in the waterproof sheet coated thereon, and scratches and cracks are less likely to occur.
[0035]
Further, the Rukoto provided cutout hole in the intersection portion of each arm lever, even if uneven apex of and out corners can be installed neatly align the character object to a vertex. For this reason, the waterproof sheet does not float at the corners of entry and exit, the risk of the waterproof sheet moving and cracking due to vibration and wind pressure is reduced, and the fit is finished.
[0036]
Furthermore, by providing both the notch and the cut-out hole in the three-way arm type of the waterproof sheet fixing accessory, it is easier to use and the construction work becomes easier.
[0037]
Further, by using the waterproof sheet fixing auditor of the present invention, eliminates the need to Ategau conventional manner to increase tension sheet between steel plates and tarpaulin and out corners, thus, waterproof and construction in and out corner Improves.
[0038]
In addition, the accessory for fixing the waterproof sheet of the present invention is fixed directly to the base chassis with a screw or the like applied to the corner of the entrance or exit, or is fixed to the base chassis from the top of the waterproof sheet, and is flat on the accessory. Cover a waterproof sheet made of a thermoplastic polymer material extended from the wall or wall, and join the surface of the accessory and the back of the waterproof sheet by thermal fusion or solvent welding. Fix the waterproof sheet mechanically with a fixing tool such as a screw or with an adhesive, and fix the waterproof sheet mechanically with a fixing tool such as a screw or with an adhesive as needed on the wall surface. By doing so, the construction work is simplified, speeding up the work period can be shortened, and the waterproof performance is improved.
[Brief description of the drawings]
FIG. 1 is a perspective view of a waterproof sheet fixing tool of the present invention. FIG. 2 is a perspective view of a waterproof sheet fixing tool of another embodiment. FIG. 3 is a perspective view of a waterproof sheet fixing tool of another embodiment. FIG. 4 is a perspective view of a waterproof sheet fixing accessory according to another embodiment. FIG. 5 is an enlarged cross-sectional view taken along line 5-5 in FIG. 3. FIG. 7 is a perspective view of the formation state of another three-way arm type. FIG. 8 is a perspective view of the formation state of another three-way arm type. FIG. 9 is a perspective view of the formation state of another three-way arm type. FIG. 11 is a perspective view of the formation state of the other three-way arm mold. FIG. 12 is a perspective view of the construction state before laying the waterproof sheet. FIG. 13 is laid the waterproof sheet. Partially cutaway perspective view of the state [FIG. 14] Partially cutaway perspective view of the state in which another waterproof sheet is laid [Explanation of symbols]
A is an accessory for fixing a waterproof sheet, B is a waterproof sheet, X and Y are wall surface parts, Z is a plane part, a is a three-way arm type, 1 is an armband, 2 is an intersection, 3 is a thermoplastic polymer material, 4 Is a cut-out, 5 is a cut-out hole, and 8 is a screw.

Claims

It is an accessory used for the entrance and exit corners, and has a shape that protrudes in three directions along each exit corner or entrance corner with the other end on one end of the armband that has a substantially L-shaped cross section A three-way arm is integrally formed, and an incision is provided from the other end to the vicinity of the intersection, and no incision is provided in the vicinity of the intersection. In addition, a waterproof sheet fixing accessory having an entry / exit angle, wherein the three-sided arm surface is coated with a thermoplastic polymer material.

The accessory for fixing a waterproof sheet at an entry / exit corner according to claim 1, wherein a cutout hole is provided at an intersection of each armband .

The waterproof sheet fixing accessory according to claim 1 or 2 is directly fixed to the base frame with a screw or the like applied to an entrance / exit corner, and is spread on the accessory from a plane portion or a wall surface portion. A waterproof sheet made of a thermoplastic polymer material is coated, and the surface of the accessory and the back surface of the waterproof sheet are joined together by heat fusion or solvent welding. It is characterized in that it is mechanically fixed with a fixing tool such as or fixed with an adhesive, and the waterproof sheet is also mechanically fixed with a fixing tool such as a screw or an adhesive on the wall surface as required. Construction method of the waterproof sheet at the entrance and exit corners.

A waterproof sheet fixing accessory according to claim 1 or 2 is applied to a corner of the entrance and exit, and a base is formed with a screw or the like on a waterproof sheet made of a thermoplastic polymer material extended from one of a flat surface portion or a wall surface portion. After fixing to the housing, a waterproof sheet made of a thermoplastic polymer material extended from the other of the wall surface part or the flat surface part is coated on the accessory, and the surface of the accessory and the back surface of the waterproof sheet covered are covered. Bonded by heat fusion or solvent welding, waterproof sheet is fixed mechanically with a fixing tool such as screws or adhesive on the flat part if necessary, and waterproof sheet is also screwed on the wall part if necessary. A waterproof sheet construction method at a corner of entry / exit, characterized in that it is mechanically fixed with a fixing tool such as, or fixed with an adhesive.