JPS63126953A - Nonwoven fabric - Google Patents
Nonwoven fabricInfo
- Publication number
- JPS63126953A JPS63126953A JP61274811A JP27481186A JPS63126953A JP S63126953 A JPS63126953 A JP S63126953A JP 61274811 A JP61274811 A JP 61274811A JP 27481186 A JP27481186 A JP 27481186A JP S63126953 A JPS63126953 A JP S63126953A
- Authority
- JP
- Japan
- Prior art keywords
- nonwoven fabric
- fibers
- fiber
- fineness
- specific gravity
- 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
- 239000004745 nonwoven fabric Substances 0.000 title claims description 51
- 239000000835 fiber Substances 0.000 claims description 38
- 230000005484 gravity Effects 0.000 claims description 14
- 229920002994 synthetic fiber Polymers 0.000 claims description 13
- 239000012209 synthetic fiber Substances 0.000 claims description 12
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 5
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 5
- 229920002647 polyamide Polymers 0.000 claims description 2
- 229920000728 polyester Polymers 0.000 claims description 2
- 229920000098 polyolefin Polymers 0.000 claims description 2
- 239000004952 Polyamide Substances 0.000 claims 1
- 239000011347 resin Substances 0.000 description 12
- 229920005989 resin Polymers 0.000 description 12
- 239000004570 mortar (masonry) Substances 0.000 description 11
- 239000000853 adhesive Substances 0.000 description 10
- 230000001070 adhesive effect Effects 0.000 description 10
- 230000003014 reinforcing effect Effects 0.000 description 10
- 230000000052 comparative effect Effects 0.000 description 9
- 239000004568 cement Substances 0.000 description 8
- 238000000465 moulding Methods 0.000 description 6
- 238000005452 bending Methods 0.000 description 5
- 238000005470 impregnation Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000002002 slurry Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 3
- 230000002787 reinforcement Effects 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- 229920000877 Melamine resin Polymers 0.000 description 2
- 239000011398 Portland cement Substances 0.000 description 2
- 239000011083 cement mortar Substances 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000032798 delamination Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 239000004640 Melamine resin Substances 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 238000007605 air drying Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 239000005038 ethylene vinyl acetate Substances 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000004088 foaming agent Substances 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000011432 ordinary Portland cement mortar Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 1
- 229920002689 polyvinyl acetate Polymers 0.000 description 1
- 239000011118 polyvinyl acetate Substances 0.000 description 1
- 239000012783 reinforcing fiber Substances 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 229920003169 water-soluble polymer Polymers 0.000 description 1
Landscapes
- Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
- Nonwoven Fabrics (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は土木建築用部材の成型用又は補強用に用いる嵩
比重の極めて小さな不織布に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a nonwoven fabric with an extremely low bulk specific gravity used for molding or reinforcing civil engineering and construction members.
ポルトランドセメントで代表される水硬性硬化体は引張
や曲げ応力に対して著しく弱い欠点があり、また樹脂成
形品でも曲げ、衝撃強度が十分でないため、近年人造繊
維による補強の検討が行なわれているが、種々の問題点
を有している。例えばショートカット繊維による水硬性
物質あるいは樹脂補強がある。この場合、繊維素材の差
による補強効果の大小はあるものの基本的にはマトリッ
クスへの分散がむずかしく混線スラリーの流動性の低下
による成型性の著しい低下に加えて繊維の分散不良によ
る繊維本来の強度が利用出来ずに補強効果が得られない
と言う問題点を有している。Hydraulic hardened materials such as Portland cement have the disadvantage of being extremely weak against tensile and bending stress, and even resin molded products do not have sufficient bending and impact strength, so reinforcement with artificial fibers has been considered in recent years. However, it has various problems. For example, there is hydraulic material or resin reinforcement using short-cut fibers. In this case, although the reinforcing effect varies depending on the fiber material, it is basically difficult to disperse into the matrix, and the fluidity of the mixed wire slurry decreases, resulting in a significant decrease in moldability. However, there is a problem in that the reinforcing effect cannot be obtained because it cannot be used.
この繊維の分散性、混線スラリーの流動性の低下の問題
を解決するために不織布を使用する方法が考えられるが
、従来の不織布は水硬性硬化体や樹脂などの硬化体の補
強用には不向きである。なぜならば不織布を構成する繊
維が１〜１００ｄｒの細繊度であシ、加えて比較的多量
の接着剤が付着している。さらにその嵩比重が０．１
Ｑ／、４よりもはるかに大きい領域である事から不織布
に水硬性物質や樹脂等を均一に含浸させることが極めて
難しく成型が困難である。かりに成型が出来たとしても
曲げ、引張り荷重が加わった時層間剥離等を生じ補強効
果が得られない。The use of non-woven fabrics can be considered to solve the problem of fiber dispersibility and reduced flowability of mixed wire slurry, but conventional non-woven fabrics are unsuitable for reinforcing cured bodies such as hydraulic cured bodies and resins. It is. This is because the fibers constituting the nonwoven fabric have a fineness of 1 to 100 dr, and in addition, a relatively large amount of adhesive is attached. Furthermore, its bulk specific gravity is 0.1
Since the area is much larger than Q/4, it is extremely difficult to uniformly impregnate the nonwoven fabric with hydraulic substances, resins, etc., and molding is difficult. Even if molding is possible, delamination occurs when bending or tensile load is applied, and no reinforcing effect can be obtained.
補強用として用いる不織布は、樹脂、モルタル、石こう
等を吹付けたり、樹脂やモルタル等を流し込み成型する
時粒子混合マトリックスを不織布内に早く均一に含浸す
ることが出来る施工性を有し、曲げ、引張り荷重時層間
剥離が起らずかつ補強性を有する必要がある。そのため
には、不織布を目の粗いものにする必要がある。この様
な不織布は従来の細繊度の繊維では作ることが出来なか
った。The nonwoven fabric used for reinforcement has workability that allows the particle mixture matrix to be quickly and uniformly impregnated into the nonwoven fabric when spraying resin, mortar, gypsum, etc. or pouring resin, mortar, etc. into the nonwoven fabric. It is necessary that delamination does not occur during tensile loading and that it has reinforcing properties. For this purpose, it is necessary to make the nonwoven fabric coarse. Such nonwoven fabrics could not be made using conventional fine-grained fibers.
本発明者等は、かかる問題点を解消するために即ち含浸
性にすぐれ成型性がよく補強効果の優れた安価な不織布
について鋭意研究の結果本発明に到達したものである。In order to solve these problems, the inventors of the present invention have arrived at the present invention as a result of intensive research into an inexpensive nonwoven fabric with excellent impregnability, good moldability, and excellent reinforcing effect.
〔問題点を解決するだめの手段〕
本発明は、繊度が１００〜５０００ｄｒ□）モ／ ７（
７メントでアスペクト比（繊維長さを繊維横断面の面積
に相当する円の直径で除した比）が４０〜２０００の繊
維長を有する有機合成繊維からなシ嵩比重がｏ、１’ｊ
／４以下の不織布である。[Means for solving the problem] The present invention is applicable to fineness of 100 to 5000 dr□) mo/7(
Made of organic synthetic fibers with an aspect ratio (ratio of fiber length divided by the diameter of a circle corresponding to the area of the cross-sectional area of the fiber) of 40 to 2000 and a bulk specific gravity of o, 1'j
/4 or less.
本発明の不織布の第１の要件は、構成する繊維が太繊度
のモノフィラメントカット繊維でなければならないこと
である。なぜならば太繊度の連続繊維は不織布成型時繊
維が硬いため曲りにくく立体性が得にくいこと、更に太
繊度のため繊維同志の交点が少ないため交点での接着、
固定が困難であり不織布の均一性が悪くなる。特に不織
布の両端部の均一が悪く端部のロス等があり不経済とな
る。カット繊維を使用すれば繊維が太く硬い繊維でも不
織布の厚さの固定、繊維と繊維との交点での接着固定も
非常に容易である。The first requirement for the nonwoven fabric of the present invention is that the constituent fibers must be monofilament cut fibers with a large fineness. This is because continuous fibers with a large fineness are hard when molded into a nonwoven fabric, making it difficult to bend and obtain three-dimensionality.Furthermore, due to the large fineness, there are few intersections between fibers, so adhesion at the intersections is difficult.
Fixation is difficult and the uniformity of the nonwoven fabric becomes poor. In particular, the nonwoven fabric is not uniform at both ends, resulting in loss at the ends, which is uneconomical. If cut fibers are used, it is very easy to fix the thickness of the nonwoven fabric even if the fibers are thick and hard, and to fix the nonwoven fabric with adhesive at the intersections of the fibers.
第２の要件は、モノフィラメント不織布の目の粗さにあ
る。ｌ］の粗さは、モノフィラメント繊維の太さおよび
繊維長によるため、繊維の太さを１００〜５ｏｏｏａｒ
、繊維長をアスペクト比４０〜２０００にしなければな
らない。繊度が１００ｄｒ以下では目の粗さが密なもの
になり、５０００ ｄｒ以上では不織布としての絡合性
が得られない。アスペクト比４０以下では繊維の絡合性
がなく密な状態の不織布となる。２０００以上では不均
一な不織布となる。The second requirement is the coarseness of the monofilament nonwoven fabric. The roughness of the monofilament fiber depends on the thickness and fiber length of the monofilament fiber.
, the fiber length must have an aspect ratio of 40 to 2000. When the fineness is less than 100 dr, the coarseness becomes dense, and when the fineness is more than 5000 dr, entanglement properties as a nonwoven fabric cannot be obtained. When the aspect ratio is 40 or less, the fibers do not entangle, resulting in a dense nonwoven fabric. If it is more than 2000, the non-woven fabric will be non-uniform.
つまり目の粗さの調整は使用用途厚さに応じてモノフィ
ラメント繊維の太さ、長さを調整する。好ましくは繊度
３５０〜３０００ ｄｒ、長さくアスペクト比）５０〜
１０００である。第３の要件は、モノフィラメント不織
布の嵩比重にある。すなわち０．１ｇ１を越えるとセメ
ント液、樹脂等の含浸性が劣り、嵩比重が低いし、ｏ、
ｏｏｓｇ／、４以下ではあまりにも粗になりすぎて不織
布成型が出来ない。したがって好ましい嵩比重は０，１
〜Ｏ，ＯＯｓ Ｑ／ｃｄである。In other words, the coarseness can be adjusted by adjusting the thickness and length of the monofilament fiber depending on the thickness of the intended use. Preferably fineness 350~3000 dr, length aspect ratio) 50~
It is 1000. The third requirement is the bulk specific gravity of the monofilament nonwoven fabric. That is, if it exceeds 0.1g1, the impregnating properties of cement liquid, resin, etc. will be poor, the bulk specific gravity will be low, and o,
If it is less than oosg/, 4, it becomes too coarse and cannot be molded into a nonwoven fabric. Therefore, the preferred bulk specific gravity is 0.1
~O,OOs Q/cd.
本発明に用いる補強繊維は、本発明の要件を満たし、か
つ有機合成繊維はポリビニルアルコール（ＰＶＡ）系合
成繊維、ポリオレフィン系合成繊維、ポリアミド系合成
繊維、ポリエステル系合成繊維がよい。The reinforcing fibers used in the present invention satisfy the requirements of the present invention, and the organic synthetic fibers are preferably polyvinyl alcohol (PVA)-based synthetic fibers, polyolefin-based synthetic fibers, polyamide-based synthetic fibers, or polyester-based synthetic fibers.
次に本発明の不織布の製造方法例について述べる。１０
０〜５０００ ｄｒのモノフィラメントは特に加工する
ことなしに不織布製造に供し得るが、樹脂やセメント等
との接着性をよくするだめに表面処理等を施してもよい
。また繊維は異形断面であってもよく、さらに長さ方向
に太細の斑のあるものでもよい。不織布成型時の繊維同
志を固定する接着剤は、繊維の種類や単繊維の繊度によ
って接着性が異なるので、接着剤は市販の接着剤の中か
ら適宜選ぶ必要がある。ポリ酢酸ビニール系、メラミン
系エチレン−酢酸ビニール共重合体、アクリル系、エポ
キシ系等の水系エマルジョンが接着性や作業性の面で好
ましく用いられる。またポリビニルアルコールやその変
性物等の水溶性高分子接着剤も使用出来る。１００〜５
０００ ｄｒのモノフィラメントのカットを行うと同時
にニアブロワ−により移動する金網ネット上に供給１〜
不織布を形成し同時に接着剤処理して乾燥すればよい。Next, an example of the method for manufacturing the nonwoven fabric of the present invention will be described. 10
Monofilaments of 0 to 5000 dr can be used for nonwoven fabric production without any special processing, but may be subjected to surface treatment to improve adhesion to resins, cement, etc. Further, the fibers may have irregular cross-sections, or may have thick and thin irregularities in the length direction. The adhesive that fixes the fibers together during nonwoven fabric molding varies in adhesiveness depending on the type of fiber and the fineness of the single fibers, so the adhesive must be appropriately selected from commercially available adhesives. Aqueous emulsions such as polyvinyl acetate type, melamine type ethylene-vinyl acetate copolymer, acrylic type, and epoxy type are preferably used in terms of adhesiveness and workability. Water-soluble polymer adhesives such as polyvinyl alcohol and modified products thereof can also be used. 100-5
000 dr monofilament is cut and at the same time it is fed onto a moving wire net by a near blower 1~
What is necessary is to form a nonwoven fabric, treat it with an adhesive at the same time, and dry it.
接着剤はスプレーで吹きつけてもまた接着剤浴中に浸漬
してもよい。不織布の目の粗さ、嵩比重及び厚みの調整
は、フィラメントの繊度、繊維長、給糸速度、ネット速
度及び接着剤処理層の成型によって調整することが出来
る。また特に嵩比重を低目にする時にはフィラメント太
繊度のものを使用しカット長の出来だけ長い物を使用す
るのがよい。不織布の製造はフィラメント製造設備と直
結ででも出来るし、いったん巻き取ったフィラメントを
給糸しながら生産することもできる。The adhesive may be sprayed on or immersed in an adhesive bath. The coarseness, bulk specific gravity, and thickness of the nonwoven fabric can be adjusted by adjusting the filament fineness, fiber length, yarn feeding speed, net speed, and molding of the adhesive treated layer. In addition, especially when the bulk specific gravity is to be made low, it is preferable to use a filament with a thick filament and a filament as long as the cut length is possible. Nonwoven fabrics can be manufactured by direct connection to filament manufacturing equipment, or can be produced while feeding the filament once wound.
以上述べてきた如く本発明の不織布は、繊維配向が３次
元方向にランダムであシ、特に厚さ方向にも多く存在し
かつ適度の嵩比重を有し網目が大きいため、セメント、
樹脂等の含浸性に優れている。該不織布を成型枠中に敷
設した上からセメントモルタルや、樹脂等を流挺するこ
とによシ水硬性硬化体、樹脂硬化体の成型が容易となり
、特殊な混合機や混合方法を用いることな〈従来方法の
ま＼で生産性を向上することができる。また高強力繊維
を使用すれば補強効果がきわめて高いものが得られる。As described above, the nonwoven fabric of the present invention has a random fiber orientation in the three-dimensional direction, and in particular, has many fibers in the thickness direction, has an appropriate bulk specific gravity, and has a large mesh.
Excellent impregnating properties with resins, etc. By laying the nonwoven fabric in a molding frame and pouring cement mortar, resin, etc. onto it, it becomes easy to mold a hydraulically cured product or resin cured product, and there is no need to use a special mixer or mixing method. <Productivity can be improved using conventional methods. Furthermore, if high-strength fibers are used, an extremely high reinforcing effect can be obtained.
従って本発明の不織布は従来の水硬性硬化体、樹脂硬化
体のコストをあまシ損うこと々く、曲げ引張、衝撃強度
を改善することが出来る画期的な発明である。以上の応
用として土木用の客土や盛土等の土砂の補強や現場施工
用セメントモルタル等の成型部材、トンネルや法面など
のセメント吹付工法へのセメント等のマトリックスの保
持及び、ひび割切止材、補強材として用いることができ
る。その他使い方によっては、暗梁排水のドレン材、断
熱材、スペース保持材として利用することが可能である
。以下実施例について説明する。Therefore, the nonwoven fabric of the present invention is an epoch-making invention that can improve bending tensile strength and impact strength without compromising the cost of conventional hydraulic cured bodies and resin cured bodies. Applications of the above include reinforcing earth and sand such as soil and embankment for civil engineering, molded parts such as cement mortar for on-site construction, retention of matrix of cement etc. in cement spraying method for tunnels and slopes, and crack cutting. It can be used as a reinforcing material. Depending on how it is used, it can also be used as a drain material for dark beam drainage, a heat insulating material, and a space retaining material. Examples will be described below.
実施例１〜３
ＰＶＡモノフィラメントをカットしなからニアブロワ−
にて上方よシ巾５００Ｉの移動する金網上に層状に給糸
しながら接着剤としてメラミン樹脂（ベッカミンＡＰＭ
、大日本インキ化学工業社製濃度４５チ）をスプレーし
、積層厚さ５ｉｙになるように調整し１５０℃１０分間
熱風炉中にて乾燥熱処理し、不織布を作製した。Examples 1 to 3 Near blower after cutting PVA monofilament
Melamine resin (Beccamin APM
, manufactured by Dainippon Ink & Chemicals Co., Ltd.) was sprayed to obtain a laminated thickness of 5 iy, and a dry heat treatment was performed in a hot air oven at 150° C. for 10 minutes to produce a nonwoven fabric.
実施例１は３５０デニール繊維長５０ ｔｍ （アスペ
クト比２５３）とした時、
実施例２は１０００デニール繊維長５０ ｍ （アスペ
クト比１４９）とした時、
実施例３は３０００デニール繊維長５０ ｔｍ （アス
ペクト比６０）とした時、
の各々不織布の嵩比重、不織布の目の粗さ度合及び不織
布の均一性を目視判定したものである。セメントスラリ
ーの含浸性は本発明の不織布を型枠巾５０１ｆｆ、長さ
５ｃｘｔ、厚さ５Ｑｇに入れ、普通ポルトランドセメン
ト（小野田セメント社＃）に気泡含有モルタル（起泡剤
はハマノ工業社製フォーミックスＣＩを用い硬化後の気
乾後の嵩比重が約１．０ｉＪ／ｄとなる）とし、水／セ
メント比が０，３、モルタル７０−値（ＪＩＳ Ｒ５２
０１）が１８ｃ１１のものを流し込んだ時の施工時及び
硬化後の内部の状態を観察した。その結果を表−１に示
しだ。Example 1 has a 350 denier fiber length of 50 tm (aspect ratio 253), Example 2 has a 1000 denier fiber length of 50 m (aspect ratio 149), and Example 3 has a 3000 denier fiber length of 50 tm (aspect ratio). When the ratio was 60), the bulk specific gravity of the nonwoven fabric, the degree of coarseness of the nonwoven fabric, and the uniformity of the nonwoven fabric were visually determined. The impregnability of the cement slurry was determined by placing the nonwoven fabric of the present invention in a mold with a width of 501 ff, a length of 5 cxt, and a thickness of 5 Qg, and adding air-containing mortar (the foaming agent was Formix manufactured by Hamano Industries Co., Ltd.) to ordinary Portland cement (Onoda Cement Co., Ltd.). Using CI, the bulk specific gravity after air drying after curing is approximately 1.0 iJ/d), the water/cement ratio is 0.3, and the mortar 70-value (JIS R52
When 01) and 18c11 were poured, the internal state was observed during construction and after curing. The results are shown in Table 1.
比較例１〜３
繊度及びアスペクト比（繊維長）を変更することだけ異
なシ、他は実施例１〜３とまったく同一の方法で不織布
の作製およびセメントスラリーの含浸を行なった。その
際の嵩比重、目の粗さ、均−性及び気泡モルタルの含浸
性を観察し、その結果を表−１に示した。Comparative Examples 1 to 3 Nonwoven fabrics were prepared and impregnated with cement slurry in the same manner as in Examples 1 to 3, except that the fineness and aspect ratio (fiber length) were changed. At that time, the bulk density, coarseness, uniformity, and impregnability of the foam mortar were observed, and the results are shown in Table 1.
比較例１は５０デニ一ル繊維長５０Ｍ（アスペクト比６
６７）を用いた場合、
比較例２は３５０デニール繊維長７ ｔｍ （アスペク
ト比３５）を用いた場合、
比較例３は１０００デニール繊維長７００ ｔｍ （ア
スペクト比２０９０ ）を用いた場合である。Comparative Example 1 has 50 denier fiber length 50M (aspect ratio 6).
67), Comparative Example 2 uses 350 denier fiber length 7 tm (aspect ratio 35), and Comparative Example 3 uses 1000 denier fiber length 700 tm (aspect ratio 2090).
以下余白
実施例１，２．３の不織布は粗さ、均一性についても良
好であり、また気泡含有モルタルの含浸も良好である。The nonwoven fabrics of Examples 1, 2, and 3 below have good roughness and uniformity, and are also good in impregnation with bubble-containing mortar.
しかし比較例１，２の様に繊度が１００ｄｒ以下の物や
３５０ｄｒでもアスペクト比が４０以下のものは、高嵩
比重になったり、目の粗さが密になり気泡モルタルの不
織布内部への含浸が悪くなる。また比較例６の様に太繊
度でもアスペクト比が２０００を越えると不織布の目の
粗さは大きいものの均一性が悪いものであった。また破
断時は繊維の千面配向分が多く、繊維層でセメント層と
剥離が起った。However, as in Comparative Examples 1 and 2, those with a fineness of 100 dr or less, or those with an aspect ratio of 40 or less even with 350 dr, have a high bulk specific gravity or a dense mesh, resulting in impregnation of the bubble mortar inside the nonwoven fabric. becomes worse. In addition, as in Comparative Example 6, even with a large fineness, if the aspect ratio exceeded 2000, the nonwoven fabric had a large coarseness but poor uniformity. Furthermore, at the time of rupture, there were many fibers oriented in a thousand planes, and the fiber layer peeled from the cement layer.
実施例４〜５
実施例１及び２の不織布を傾斜８０°のコンパネの上に
ラスをはりつけ、その」二に取付けた。モルタル（川砂
／セメント−１７，、ｗ／ｃ＝ ０．３７フロー値２０
ｃＮ）を明治スプレーガンＡＧＡを使用し、スプレー
圧４◆ｊの圧で吹付けをし、モルタルの含浸の状態の観
察した。その結果を表−２に示しく１２）
表−２
上記の結果より、実施例４，５共にモルタルの含浸性も
良好であり、吹付用不織布として使用が可能である。Examples 4 to 5 The nonwoven fabrics of Examples 1 and 2 were attached to a control panel having an inclination of 80° with a lath attached thereto. Mortar (river sand/cement-17, w/c = 0.37 flow value 20
cN) was sprayed using a Meiji spray gun AGA at a spray pressure of 4◆j, and the state of impregnation of the mortar was observed. The results are shown in Table 2.12) Table 2 From the above results, both Examples 4 and 5 have good mortar impregnation properties and can be used as nonwoven fabrics for spraying.
実施例６，７、比較例４
実施例１，２の不織布と同様な方法にて厚さ５１の不織
布を作成し、普通ポルトランドセメントモルタルに気泡
を入れ、硬化片のモルタルの比重１．０の２５ｃＩＩＸ
２５１ｍＸ厚さ５ｃ！ｌＩの成型体を作製した。その成
型体を気乾養生２８日ｎ５ＣＩＭ×５ｃＩＭ×２０ＣＭ
に切り出し、インストロンＴＴ−ＣＭを用いて曲げ強度
を測定した〔実施例６，７〕。比較のために比較例４と
して、不織布を入れないことのみ実施例５，６と異なり
他については同様の方法にて成型体を作製した。その結
果を表−３に示した。Examples 6 and 7, Comparative Example 4 A non-woven fabric with a thickness of 51 mm was prepared in the same manner as the non-woven fabric of Examples 1 and 2, air bubbles were added to ordinary Portland cement mortar, and the specific gravity of the mortar of the hardened piece was 1.0. 25cIIX
251m x thickness 5c! A molded body of II was produced. Air dry the molded body for 28 days n5CIM x 5cIM x 20CM
The bending strength was measured using an Instron TT-CM [Examples 6 and 7]. For comparison, as Comparative Example 4, a molded body was produced in the same manner as in Examples 5 and 6, except that no nonwoven fabric was added. The results are shown in Table-3.
表−３
実施例６，７の物は比較例４の不織布を入れない物に比
べ強度が高く、不織布の補強効果が非常に大きいことを
示している。Table 3 The products of Examples 6 and 7 had higher strength than the product of Comparative Example 4 which did not contain the nonwoven fabric, indicating that the reinforcing effect of the nonwoven fabric was very large.
Claims (2)
トでアスペクト比（繊維長さを繊維横断面の面積に相当
する円の直径で除した比を言う）が４０〜２０００であ
る有機合成繊維からなる嵩比重０．００５〜０．１ｇ／
ｃｍ＾３の不織布。(1) A monofilament with a fineness of 100 to 5,000 dr and a bulk specific gravity made of organic synthetic fibers with an aspect ratio (the ratio of the fiber length divided by the diameter of a circle corresponding to the area of the cross section of the fiber) of 40 to 2,000. 0.005~0.1g/
cm^3 non-woven fabric.
維、ポリオレフイン系合成繊維、ポリアミド系合成繊維
、ポリエステル系合成繊維である特許請求の範囲第１項
記載の不織布。(2) The nonwoven fabric according to claim 1, wherein the organic synthetic fiber is a polyvinyl alcohol synthetic fiber, a polyolefin synthetic fiber, a polyamide synthetic fiber, or a polyester synthetic fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61274811A JPH07103504B2 (en) | 1986-11-17 | 1986-11-17 | Non-woven |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61274811A JPH07103504B2 (en) | 1986-11-17 | 1986-11-17 | Non-woven |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63126953A true JPS63126953A (en) | 1988-05-30 |
| JPH07103504B2 JPH07103504B2 (en) | 1995-11-08 |
Family
ID=17546894
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61274811A Expired - Fee Related JPH07103504B2 (en) | 1986-11-17 | 1986-11-17 | Non-woven |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07103504B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010065768A (en) * | 2008-09-11 | 2010-03-25 | Showa Denko Kenzai Kk | Fire resistant two-layer pipe joint and manufacturing method thereof |
| JP2012031961A (en) * | 2010-08-02 | 2012-02-16 | Showa Denko Kenzai Kk | Fire resistant two-layer pipe and manufacturing method therefor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4912172A (en) * | 1972-05-13 | 1974-02-02 | ||
| JPS54138669A (en) * | 1978-04-19 | 1979-10-27 | Sadaaki Takagi | Cushion material and production |
| JPS5716952A (en) * | 1980-06-28 | 1982-01-28 | Sadaaki Takagi | Production of cushion material |
| JPS6244057A (en) * | 1985-08-21 | 1987-02-26 | Toyota Motor Corp | Brushless motor |
-
1986
- 1986-11-17 JP JP61274811A patent/JPH07103504B2/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4912172A (en) * | 1972-05-13 | 1974-02-02 | ||
| JPS54138669A (en) * | 1978-04-19 | 1979-10-27 | Sadaaki Takagi | Cushion material and production |
| JPS5716952A (en) * | 1980-06-28 | 1982-01-28 | Sadaaki Takagi | Production of cushion material |
| JPS6244057A (en) * | 1985-08-21 | 1987-02-26 | Toyota Motor Corp | Brushless motor |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010065768A (en) * | 2008-09-11 | 2010-03-25 | Showa Denko Kenzai Kk | Fire resistant two-layer pipe joint and manufacturing method thereof |
| JP2012031961A (en) * | 2010-08-02 | 2012-02-16 | Showa Denko Kenzai Kk | Fire resistant two-layer pipe and manufacturing method therefor |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07103504B2 (en) | 1995-11-08 |
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