JPH047462A - Manufacture of surface sheet for concrete placing form - Google Patents
Manufacture of surface sheet for concrete placing formInfo
- Publication number
- JPH047462A JPH047462A JP10785590A JP10785590A JPH047462A JP H047462 A JPH047462 A JP H047462A JP 10785590 A JP10785590 A JP 10785590A JP 10785590 A JP10785590 A JP 10785590A JP H047462 A JPH047462 A JP H047462A
- Authority
- JP
- Japan
- Prior art keywords
- concrete
- plastic film
- nonwoven fabric
- fabric
- holes
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 14
- 239000004745 nonwoven fabric Substances 0.000 claims abstract description 36
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 31
- 239000002985 plastic film Substances 0.000 claims abstract description 29
- 229920006255 plastic film Polymers 0.000 claims abstract description 29
- 238000009415 formwork Methods 0.000 claims description 14
- 238000005266 casting Methods 0.000 claims description 8
- 239000010410 layer Substances 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 8
- 239000002344 surface layer Substances 0.000 claims description 6
- 239000000835 fiber Substances 0.000 abstract description 10
- 238000010521 absorption reaction Methods 0.000 abstract description 8
- 239000004744 fabric Substances 0.000 abstract 5
- 238000010438 heat treatment Methods 0.000 abstract 1
- -1 polyethylene Polymers 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000000149 penetrating effect Effects 0.000 description 3
- 239000004743 Polypropylene Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 229920000915 polyvinyl chloride Polymers 0.000 description 2
- 239000004800 polyvinyl chloride Substances 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 229920001328 Polyvinylidene chloride Polymers 0.000 description 1
- 241001655798 Taku Species 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 229920005672 polyolefin resin Polymers 0.000 description 1
- 239000005033 polyvinylidene chloride Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、コンクリート打設用型枠のコンクリド打設側
の面に配設し、型枠に吸・排水性及び易剥離性を付与す
る表面シートの製造方法に関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention is provided on the concrete pouring side surface of a formwork for concrete pouring to impart absorption/drainage properties and easy peelability to the formwork. The present invention relates to a method for manufacturing a top sheet.
〔従来の技術及び発明が解決しようとする課題〕従来、
コンクリート打設用型枠として第３図に示したように型
枠本体１のコンクリート打設側の面に不織布からなる導
水層２と多数の通水孔（図示せず）が穿設されたプラス
チックフィルムからなる表面層３とを積層した表面シー
ト４を配設したものが知られており、この型枠によれば
、コンクリートから生じた水分がプラスチックフィルム
３の通水孔を通って不織布２中に吸収され、該不織布２
中を流れて外部に排水されると共に、コンクリートが固
化した後は、上記プラスチックフィルム３が剥離層とし
て作用し、コンクリート打設面から型枠を容易に除去す
ることができる。[Problems to be solved by conventional techniques and inventions] Conventionally,
As shown in Fig. 3, the formwork for concrete placement is a plastic formwork body 1 with a water conductive layer 2 made of non-woven fabric and a number of water holes (not shown) drilled on the concrete placement side surface of the formwork body 1. A mold is known in which a surface sheet 4 is laminated with a surface layer 3 made of a film, and according to this formwork, water generated from concrete passes through the water holes of the plastic film 3 into the nonwoven fabric 2. absorbed into the nonwoven fabric 2
After the concrete flows inside and is drained to the outside, and the concrete hardens, the plastic film 3 acts as a peeling layer, making it possible to easily remove the formwork from the concrete placement surface.
ここで、上記型枠の表面シート４は、不織布２とプラス
チックフィルム３とを積層した後、加熱した針により通
水孔を穿孔する方法により製造されるが、この場合上記
穿孔工程では、作業性等の点から第４図に示したように
プラスチックフィルム３側より加熱した針５を突き刺し
てプラスチックフィルム３と不織布２とを貫通する孔を
形成し、針を引き抜くことにより通水孔６を形成してい
る。Here, the top sheet 4 of the formwork is manufactured by laminating the nonwoven fabric 2 and the plastic film 3 and then punching water holes with a heated needle. From these points, as shown in FIG. 4, a heated needle 5 is pierced from the plastic film 3 side to form a hole penetrating the plastic film 3 and the nonwoven fabric 2, and the needle is pulled out to form a water passage hole 6. are doing.
しかしながら、上記方法により製造されたコンクリート
打設型枠用表面シートは、良好な剥離性及び吸・排水性
を発揮し得ない場合がある。However, the surface sheet for concrete casting form produced by the above method may not exhibit good releasability and good absorption/drainage properties.
即ち、加熱した針５を突き刺し、引き抜く際に不織布２
の繊維７が針５と共に引き抜かれ、これが通水孔６から
コンクリート打設面を構成するプラスチックフィルム３
の表面に露出し、コンクリートを打設した場合に、この
繊維７がコンクリート内に埋設されたような状態にコン
クリ−１〜と一体化し、表面シート４とコンクリートと
の剥離を困難にする場合がある。また、通水層６の孔径
は、プラスチックフィルム側では針５の径とばぼ同径で
あるが、不織布側の孔径は収縮等によって針５の径の約
６０〜７０％程度の孔径となり、大量の水分が生じるよ
うな場合、良好な吸・排水が行なわれないことがある。That is, when the heated needle 5 is pierced and pulled out, the nonwoven fabric 2
The fibers 7 are pulled out together with the needles 5, and these are passed through the water holes 6 to the plastic film 3 that constitutes the concrete pouring surface.
When the fibers 7 are exposed on the surface of the surface sheet 4 and concrete is poured, these fibers 7 may become integrated with the concrete 1 to a state where they are buried in the concrete, making it difficult to separate the surface sheet 4 from the concrete. be. In addition, the pore diameter of the water permeable layer 6 is approximately the same diameter as the needle 5 on the plastic film side, but the pore diameter on the nonwoven fabric side becomes approximately 60 to 70% of the diameter of the needle 5 due to shrinkage, etc. If a large amount of water is generated, good absorption and drainage may not be achieved.
本発明は上記事情に鑑みなされたもので、良好なコンク
リート剥離性及び吸・排水性を有する表面シートを確実
に製造することができるコンクリート打設型枠用表面シ
ートの製造方法を提供することを目的とする。The present invention was made in view of the above circumstances, and it is an object of the present invention to provide a method for manufacturing a surface sheet for concrete casting formwork, which can reliably produce a surface sheet having good concrete releasability and absorption/drainage properties. purpose.
本発明は、上記目的を達成するため不織布からなる導水
層と多数の通水孔を有するプラスチックフィルムからな
る表面層とが積層されてなり、上記表面層を外側に向け
た状態で型枠本体のコンクリート打設側の面に配設する
ようにした表面シートの製造方法において、不織布と不
透水性プラスチックフィルムとの積層体に不織布側から
加熱された針を刺し通した後、この針を引き抜くことに
より、上記積層体に不織布とプラスチックフィルムとを
貫通する通水孔を形成することを特徴とするコンクリー
ト打設型枠用表面シートの製造方法を提供する。In order to achieve the above object, the present invention comprises a water conducting layer made of a non-woven fabric and a surface layer made of a plastic film having a large number of water passing holes, which are laminated together, and the surface layer is placed on the formwork body with the surface layer facing outward. In a method of manufacturing a top sheet to be placed on the concrete pouring side, a heated needle is pierced through a laminate of a nonwoven fabric and an impermeable plastic film from the nonwoven fabric side, and then the needle is pulled out. Accordingly, there is provided a method for manufacturing a surface sheet for concrete casting form, which comprises forming water holes penetrating the nonwoven fabric and the plastic film in the laminate.
本発明′の製造方法によれば、良好なコンクリド剥離性
及び吸・排水性を有するコンクリート打＝３−
＝４−
設型枠用表面シートを確実に製造することができる。According to the manufacturing method of the present invention, it is possible to reliably manufacture a surface sheet for concrete casting formwork having good concrete releasability and good absorption/drainage properties.
即ち、本発明方法は、不織布とプラスチックフィルムと
の積層体に通水孔を穿孔する際、加熱した針を積層体の
不織布側から突き刺して穿孔するように構成したので、
針を積層体から引き抜く時に不織布の繊維がコンクリー
ト打設面を形成するプラスチックフィルム表面に露出す
ることがなく、コンクリート剥離性を損なうことがない
。また、形成された通水孔の不織布側の孔径は、針と同
等径の十分な孔径が確保されるので打設コンクリートか
ら大量の水分が発生した場合でも良好な吸・排水が行な
われるものである。That is, in the method of the present invention, when drilling water holes in a laminate of a nonwoven fabric and a plastic film, a heated needle is pierced from the nonwoven fabric side of the laminate.
When the needle is pulled out of the laminate, the fibers of the nonwoven fabric are not exposed to the surface of the plastic film forming the concrete placement surface, and the concrete releasability is not impaired. In addition, the diameter of the formed water holes on the non-woven fabric side is sufficient to have the same diameter as the needle, so even if a large amount of moisture is generated from the poured concrete, good absorption and drainage will be achieved. be.
以下、本発明の一実施例を示し、本発明を具体的に説明
する。Hereinafter, one embodiment of the present invention will be shown and the present invention will be specifically explained.
まず、第１図に示したように不織布２と不透水性のプラ
スチックフィルム３とを積層一体化して積層体４を作製
する。First, as shown in FIG. 1, a nonwoven fabric 2 and a water-impermeable plastic film 3 are laminated and integrated to produce a laminate 4.
この場合、不織布２としては、特に制限されないが、ポ
リエチレン、ポリプロピレン、ポリエチレンテレフタレ
ート、ポリ塩化ビニル、ポリ塩化ビニリデンコツトンな
どの繊維からなる厚さ０．１〜１ｍｍ、特に０．２〜０
．３５ｍｍ程度の不織布が好適に使用され、またプラス
チックフィルム３としては、ポリエチレン、エチレン・
酢酸ビニル共重合体、ポリプロピレン、ポリ塩化ビニル
等の厚さ１０〜５０μ、特に３０μ程度のフィルムが好
ましく用いられる。更に、不織布とプラスチックフィル
ムとを積層一体化する方法としては、ポリオレフィン樹
脂による押出しラミネート又は熱溶着によるホットラミ
ネート法などを好適に採用することができる。In this case, the nonwoven fabric 2 is made of fibers such as polyethylene, polypropylene, polyethylene terephthalate, polyvinyl chloride, and polyvinylidene chloride, but is not particularly limited, and has a thickness of 0.1 to 1 mm, particularly 0.2 to 0.0 mm.
．． A non-woven fabric of about 35 mm is preferably used, and as the plastic film 3, polyethylene, ethylene, etc.
A film made of vinyl acetate copolymer, polypropylene, polyvinyl chloride, etc. with a thickness of 10 to 50 μm, particularly about 30 μm, is preferably used. Furthermore, as a method for laminating and integrating the nonwoven fabric and the plastic film, extrusion lamination using polyolefin resin or hot lamination using thermal welding can be suitably employed.
次に、第１図に示したように、この積層体（表面シート
）４の不織布２側から加熱した針５を突き刺して引き抜
くことにより不織布２及びプラスチックフィルム３を貫
通する孔径０．２〜０．７ｍｍ程度の通水孔６を穿孔す
る。なお、通水孔は表面シート全体に多数形成するが、
各通水孔間の間隔は１〜１．５ｍｍ程度とすることが好
ましい。Next, as shown in FIG. 1, a heated needle 5 is pierced from the nonwoven fabric 2 side of this laminate (topsheet) 4 and pulled out, thereby penetrating the nonwoven fabric 2 and the plastic film 3 with a hole diameter of 0.2 to 0. Drill a water passage hole 6 of about .7 mm. In addition, many water holes are formed throughout the surface sheet,
It is preferable that the interval between each water hole is about 1 to 1.5 mm.
この場合、針５をプラスチックフィルム３から不織布２
側へと引き抜くので、不織布２の繊維がコンクリート打
設面を形成するプラスチックフィルム３の表面に引き出
されて露出するようなことがない。また、形成された通
水孔６の不織布２側の孔径はプラスチックフィルム３側
の孔径より大きい針５とほぼ同径の十分な孔径が確保さ
れる。In this case, the needle 5 is moved from the plastic film 3 to the nonwoven fabric 2.
Since the fibers of the nonwoven fabric 2 are pulled out to the side, the fibers of the nonwoven fabric 2 are not pulled out and exposed to the surface of the plastic film 3 forming the concrete placement surface. Further, the diameter of the formed water passage hole 6 on the nonwoven fabric 2 side is ensured to be a sufficient diameter that is approximately the same diameter as the needle 5, which is larger than the diameter of the hole on the plastic film 3 side.
上記方法により製造した表面シートを用いてコンクリー
トを打・設する場合、第２図に示したように表面シート
４をコンクリ−１〜打設用の型枠本体１のコンクリート
打設側の面をその不織布２で被覆するように配し、この
表面シート４のプラスチックフィルム３に接してコンク
リート８を打設する。この場合、コンクリート８から生
じる水分はプラスチックフィルム３及び不織布２を貫通
する通水孔（図示せず）を通って不織布２中に吸収され
、さらにこの不織布２中を流れた後、外部に排水される
。この時コンクリート８がら大量の水分が生じた場合で
も上記通水孔の孔径がプラスチックフィルム３側より不
織布２側の方が大きいので、吸収した水分が不織布２中
をスムーズに流れ、良好に吸・排水を行なうことができ
る。When pouring and placing concrete using the surface sheet manufactured by the above method, as shown in FIG. The nonwoven fabric 2 is placed so as to cover it, and concrete 8 is placed in contact with the plastic film 3 of the top sheet 4. In this case, water generated from the concrete 8 is absorbed into the nonwoven fabric 2 through water holes (not shown) that penetrate the plastic film 3 and the nonwoven fabric 2, and after flowing through the nonwoven fabric 2, is drained to the outside. Ru. At this time, even if a large amount of moisture is generated in the concrete 8, since the diameter of the water passage hole is larger on the nonwoven fabric 2 side than on the plastic film 3 side, the absorbed moisture flows smoothly through the nonwoven fabric 2 and is absorbed well. Drainage can be carried out.
次に、コンクリート８が固化した後、型枠本体１及び表
面シート４をコンクリート８の打設面から除去するが、
この場合コンクリート８と接しているプラスチックフィ
ルム３の表面は不織布２の繊維が露出しているようなこ
とがなく、平滑な打設面が形成されているのでプラスチ
ックフィルム３が剥離層として良好に作用し、コンクリ
−１−８の打設面を錫付けるようなことがなく、容易に
型枠本体１及び表面シー、１・４を除去することができ
る。Next, after the concrete 8 hardens, the form body 1 and the top sheet 4 are removed from the concrete 8 pouring surface.
In this case, the surface of the plastic film 3 in contact with the concrete 8 has no exposed fibers of the nonwoven fabric 2, and a smooth casting surface is formed, so the plastic film 3 acts well as a peeling layer. However, there is no need to tin the concrete casting surface of the concrete 1-8, and the form body 1 and the surface sheaths 1 and 4 can be easily removed.
なお、本発明は上記実施例に限定されるものではなく、
例えば通水孔の形状、大きさ等は目的等に応じて適宜設
定することができ、その他の構成についても本発明の要
旨の範囲内で種々変更することができる。Note that the present invention is not limited to the above embodiments,
For example, the shape, size, etc. of the water passage hole can be appropriately set depending on the purpose, etc., and other configurations can also be changed variously within the scope of the gist of the present invention.
以上説明したように、本発明の製造方法によれば、良好
なコンクリ−１・剥離性及び吸・排水性を有するコンク
リート打設型枠用表面シートを確実に製造することがで
きる。As explained above, according to the manufacturing method of the present invention, it is possible to reliably manufacture a surface sheet for concrete casting formwork having good concrete 1/peelability and absorption/drainage properties.
第１図は、本発明の製造方法を説明する説明図、第２図
は本発明の製造方法により製造した表面シートを用いて
コンクリートを打設した状態を示す断面図、第３図は表
面シートを有する型枠を示す断面図、第４図は従来の製
造方法を説明する説明図である。
１・・・型枠本体、２・・・不織布（導水層）、３・・
・プラスチックフィルム（表面Ｍ）、４・・・表面シー
ト、５・・・針、６・・・通水層、７・・・繊維、８・
・・コンクリ−１〜出願人 藤森工業 株式会社
代理人 小 島 隆 司 （他１名）区
一一一
法
派
鐸Fig. 1 is an explanatory diagram explaining the manufacturing method of the present invention, Fig. 2 is a sectional view showing the state in which concrete is poured using the surface sheet manufactured by the manufacturing method of the present invention, and Fig. 3 is a diagram showing the surface sheet FIG. 4 is an explanatory diagram illustrating a conventional manufacturing method. 1... Form body, 2... Nonwoven fabric (water conducting layer), 3...
・Plastic film (Surface M), 4... Surface sheet, 5... Needle, 6... Water permeable layer, 7... Fiber, 8...
...Concrete 1 ~ Applicant Fujimori Kogyo Co., Ltd. Agent Takashi Kojima (and 1 other person) Ku 111 Hoha Taku
Claims (1)
スチックフィルムからなる表面層とが積層されてなり、
上記表面層を外側に向けた状態で型枠本体のコンクリー
ト打設側の面に配設するようにした表面シートの製造方
法において、不織布と不透水性のプラスチックフィルム
との積層体に不織布側から加熱された針を刺し通した後
、この針を引き抜くことにより、上記積層体に不織布と
プラスチックフィルムとを貫通する通水孔を形成するこ
とを特徴とするコンクリート打設型枠用表面シートの製
造方法。1. A water conductive layer made of a nonwoven fabric and a surface layer made of a plastic film having a large number of water holes are laminated,
In the manufacturing method of the topsheet, which is arranged on the surface of the formwork body on the concrete pouring side with the surface layer facing outward, Manufacture of a surface sheet for concrete casting formwork, characterized in that water holes are formed in the laminate through the nonwoven fabric and the plastic film by piercing the heated needle and then pulling out the needle. Method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10785590A JP2669104B2 (en) | 1990-04-24 | 1990-04-24 | Method of manufacturing surface sheet for concrete casting formwork |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10785590A JP2669104B2 (en) | 1990-04-24 | 1990-04-24 | Method of manufacturing surface sheet for concrete casting formwork |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH047462A true JPH047462A (en) | 1992-01-10 |
| JP2669104B2 JP2669104B2 (en) | 1997-10-27 |
Family
ID=14469774
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10785590A Expired - Fee Related JP2669104B2 (en) | 1990-04-24 | 1990-04-24 | Method of manufacturing surface sheet for concrete casting formwork |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2669104B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103216086A (en) * | 2013-05-08 | 2013-07-24 | 中交第三公路工程局有限公司 | Method for pouring concrete structure, concrete pouring template and manufacturing method of concrete pouring template |
| JP2022026703A (en) * | 2020-07-31 | 2022-02-10 | フクビ化学工業株式会社 | Porous water-permeable sheet |
| KR102479993B1 (en) * | 2022-06-22 | 2022-12-22 | 주식회사 정석케미칼 | Polypropylene composite sheet for concrete formwork with excellent strength and demolding |
-
1990
- 1990-04-24 JP JP10785590A patent/JP2669104B2/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103216086A (en) * | 2013-05-08 | 2013-07-24 | 中交第三公路工程局有限公司 | Method for pouring concrete structure, concrete pouring template and manufacturing method of concrete pouring template |
| CN103216086B (en) * | 2013-05-08 | 2015-07-08 | 中交第三公路工程局有限公司 | Method for pouring concrete structure, concrete pouring template and manufacturing method of concrete pouring template |
| JP2022026703A (en) * | 2020-07-31 | 2022-02-10 | フクビ化学工業株式会社 | Porous water-permeable sheet |
| KR102479993B1 (en) * | 2022-06-22 | 2022-12-22 | 주식회사 정석케미칼 | Polypropylene composite sheet for concrete formwork with excellent strength and demolding |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2669104B2 (en) | 1997-10-27 |
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