JPS6323307B2 - - Google Patents
Info
- Publication number
- JPS6323307B2 JPS6323307B2 JP59160048A JP16004884A JPS6323307B2 JP S6323307 B2 JPS6323307 B2 JP S6323307B2 JP 59160048 A JP59160048 A JP 59160048A JP 16004884 A JP16004884 A JP 16004884A JP S6323307 B2 JPS6323307 B2 JP S6323307B2
- Authority
- JP
- Japan
- Prior art keywords
- fibers
- web
- heat
- reinforcing fibers
- nonwoven fabric
- 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.)
- Expired
Links
- 239000000835 fiber Substances 0.000 claims description 34
- 239000012783 reinforcing fiber Substances 0.000 claims description 34
- 239000004745 nonwoven fabric Substances 0.000 claims description 30
- 239000000853 adhesive Substances 0.000 claims description 15
- 238000002844 melting Methods 0.000 claims description 14
- 238000004519 manufacturing process Methods 0.000 claims description 13
- 230000008018 melting Effects 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 12
- 238000009960 carding Methods 0.000 claims description 6
- 239000000470 constituent Substances 0.000 claims description 4
- 230000004927 fusion Effects 0.000 claims description 4
- 239000002131 composite material Substances 0.000 description 8
- -1 polypropylene Polymers 0.000 description 5
- 230000001070 adhesive effect Effects 0.000 description 4
- 239000004743 Polypropylene Substances 0.000 description 3
- 229920000297 Rayon Polymers 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- 229920001155 polypropylene Polymers 0.000 description 3
- 239000002964 rayon Substances 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000005022 packaging material Substances 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- UPZFLZYXYGBAPL-UHFFFAOYSA-N 2-ethyl-2-methyl-1,3-dioxolane Chemical compound CCC1(C)OCCO1 UPZFLZYXYGBAPL-UHFFFAOYSA-N 0.000 description 1
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
Description
産業上の利用分野
本発明は繊維補強不織布の製法に関する。さら
に詳しくは、包装材料または衣類などに用いるこ
とができる強度の高い繊維補強不織布の製法に関
する。
従来の技術
従来より、表面に低融点層を有する熱接着性複
合繊維を配合してカード法でえられたウエブを、
複合繊維の低融点成分の融点以上、かつ高融点成
分の融点未満の温度で、たとえば熱風炉または熱
ロールなどにより熱処理し、繊維間を熱接着せし
めて不織布を製造することが知られている。
発明が解決しようとする問題点
ところが一般にカード法により製造したウエブ
はその走行方向に繊維が配列しやすいため、えら
れる不織布の横方向の強度がきわめて弱くなり、
通常縦方向の強度の10％程度もしくはそれ以下に
なる。
したがつてそのような方法でえられる不織布の
用途は、紙おむつ、生理用ナプキンの肌当材など
には好適であるが、包装材料を使い捨て衣類など
の比較的強度を必要とする用途には不適当であ
る。またバインダータイプの不織布の補強法とし
て、不織布に寒冷沙などを接着剤により接着して
乾燥させる方法が試みられているが、かかる方法
は接着剤を必要とし、さらに乾燥工程が必要であ
るため製造コストが高いという問題がある。
本発明は前記問題を解決するためになされたも
のであり、安価に製造することができ、強度、と
くに横方向の強度が高い不織布を製造しうる製法
を提供することを目的としている。
問題点を解決するための手段
本発明の繊維補強不織布は、
(a) 熱接着性複合繊維30〜100％と該熱接着性複
合繊維の低融点成分より融点の高い他の繊維０
〜70％とからカード法によりウエブを製造し、
(b) 該ウエブの走行方向に対して斜め方向に第１
の補強繊維を配置し、
(c) 該第１の補強繊維と交差するように前記ウエ
ブの走行方向に対して斜め方向に、第１の補強
繊維と直接またはウエブを介して重なるように
第２の補強繊維を配置し、
(d) 前記第１および第２の補強繊維と前記ウエブ
の構成繊維とを熱融着によりたがいに接着さ
せ、かつウエブの構成繊維同士を熱融着により
たがいに接着せしめることを構成上の特徴とし
ている。
補強繊維はウエブの表面に配置してもよく、ま
たウエブの内部に設けてもよい。
作 用
本発明の繊維補強不織布においては、たがいに
交差するように配置された第１の補強繊維と第２
の補強繊維とが、それぞれウエブを構成する繊維
と熱融着されている。そのためウエブ内には補強
繊維がいわば網目状に配置されており、しかも補
強繊維とウエブとが部分的に熱融着されている状
態となつている。したがつて補強繊維は不織布全
体の弾力性、柔軟性および質感を損なうことなく
不織布の強度、とくに横方向の強度を向上させる
ことができる。
さらに本発明の不織布においては、ウエブ内に
熱接着性複合繊維が含まれているため、補強繊維
とウエブの接合に接着剤を使用する必要がなく、
しかも乾燥工程を必要としない。したがつて製造
コストが安価であるという利点がある。
実施例
つぎに図面を参照しながら本発明の製法を説明
する。
第１図は本発明の製法によりえられる不織布の
一実施例を示す斜視図、第２図および第３図はそ
れぞれ本発明の製法によりえられる不織布の他の
実施例を示す一部切欠き斜視図である。
第１図に示される不織布１は、ウエブ２の表面
に補強繊維３ａ，３ｂを配置して熱処理をしたも
のである。補強繊維３ａ，３ｂはカーデイングや
コンベアによる移動のときのウエブ２の走行方向
（第１図の矢印Ａ方向）に対して斜め方向に配置
された第１の補強繊維３ａと、第１の補強繊維３
ａと交差するようにウエブ２の走行方向に対して
斜め方向に配置された第２の補強繊維３ｂとから
構成されている。
第１の補強繊維３ａと第２の補強繊維３ｂとは
同種類の繊維であつてもよく、また異なる種類の
ものであつてもよい。
第２図に示される不織布４は、ウエブ２の内部
に第１および第２の補強繊維３ａ，３ｂがたがい
に交差するように配置されている。
第３図に示される不織布５においては、第１の
補強繊維３ａと第２の補強繊維３ｂとがウエブ２
内の異なる部位に設けられている。
第１〜３図のいずれの不織布もウエブ２と補強
繊維３ａ，３ｂとがたがいに部分的に融着されて
いる。
本発明における熱接着性複合繊維とは、芯部な
どが高融点の樹脂で形成され、その表層部に低融
点の樹脂層が設けられており、そのため比較的低
温（たとえば200℃）下での加熱により熱接着性
複合繊維同士または熱接着性複合繊維と他の繊維
とが接着するような繊維を意味する。また非熱接
着性とは前記熱接着性複合繊維が接着性を示す程
度の温度では接着性を示さない性質を意味してい
る。
前記熱接着性複合繊維としては、繊維の芯部が
ポリプロピレン、ポリエステルなどの高融点の合
成樹脂からなり、表層部にポリエチレン、エチレ
ン−酢ビコーポリマーなどの低融点の合成樹脂層
が設けられた二重構造の繊維（たとえばチツソ(株)
製の商品名ES繊維、大和紡績(株)製の商品名NBF
など）があげられる。
本発明におけるウエブには前記熱接着性複合繊
維に加えて他の繊維として、たとえばポリエステ
ル、ナイロン、ポリプロピレンなどの合成繊維ま
たはレーヨン、アセテートなどの化学繊維を０〜
70％（重量％、以下同じ）の範囲で配合してもよ
い。
なお熱接着性複合繊維が30％よりも少なくなる
と、繊維間の熱接着点が少なくなるため、不織布
の強度が低くなる。
本発明における補強繊維としては、強度が高
く、ウエブの斜め方向の差し渡しよりも長く、熱
接着性複合繊維との接着性がよい繊維状または糸
状のものであればいずれも用いることができる。
補強繊維としては天然もしくは、化合繊維を素
材とする紡績糸もしくは化合繊維のフイラメント
糸などの単糸またはそれらを撚糸したものを用い
ることができる。
つぎに実施例をあげて本発明の繊維補強不織布
の製法を説明する。
実施例 １〜３
高融点成分をポリプロピレンとし、低融点成分
をポリエチレンとした二重構造の複合形の熱接着
性複合繊維3d×64mmとレーヨン2d×51mmとを混
合してカード法により25ｇ／m2のウエブをえた。
ついでこのものに40番手（綿番手）のレーヨン
100％（単糸強度309ｇ）の紡績糸を第１図のよう
にほぼ25mm間隔でそれぞれウエブの走行方向に対
して70度の傾きとなるように配置を施し、135℃
で60Kg／cmの熱ロールにより熱処理を施し、実施
例１〜３の不織布を製造した。
実施例１〜３の不織布の縦方向の強度および横
方向の強度の測定結果を第１表に示す。なお第１
表における強度は幅５cm、長さ20cmの長方形試片
に切断し、試長10cmにてインストロン試験機を用
いて100mm／分の一定速度で引張り測定した値で
ある。なお比較のために不織布のみの引張り強度
をも示す。
INDUSTRIAL APPLICATION FIELD The present invention relates to a method for producing a fiber-reinforced nonwoven fabric. More specifically, the present invention relates to a method for producing a high-strength fiber-reinforced nonwoven fabric that can be used for packaging materials, clothing, and the like. Conventional technology Conventionally, a web obtained by a carding method by blending heat-adhesive composite fibers with a low melting point layer on the surface,
It is known to produce a nonwoven fabric by thermally bonding the fibers by heat-treating the composite fiber at a temperature higher than the melting point of the low-melting point component and lower than the melting point of the high-melting point component, for example, using a hot air oven or a hot roll. Problems to be Solved by the Invention However, in general, webs produced by the carding method tend to have fibers arranged in the running direction, resulting in extremely weak transverse strength of the resulting nonwoven fabric.
It is usually about 10% or less of the strength in the longitudinal direction. Therefore, the nonwoven fabric obtained by such a method is suitable for use as a skin material for disposable diapers and sanitary napkins, but it is not suitable for applications that require relatively strong packaging materials such as disposable clothing. Appropriate. In addition, as a reinforcement method for binder type non-woven fabrics, a method has been attempted in which the non-woven fabric is bonded with cold sand etc. using an adhesive and then dried, but this method requires an adhesive and an additional drying process. There is a problem of high cost. The present invention has been made to solve the above problems, and an object of the present invention is to provide a manufacturing method that can produce a nonwoven fabric that can be manufactured at low cost and has high strength, particularly in the transverse direction. Means for Solving the Problems The fiber-reinforced nonwoven fabric of the present invention comprises (a) 30 to 100% of heat-adhesive conjugate fibers and 0% of other fibers having a higher melting point than the low-melting-point component of the heat-adhesive conjugate fibers;
70% of the web by the carding method, (b) a first plate in a direction diagonal to the running direction of the web;
(c) arranging reinforcing fibers in a diagonal direction with respect to the running direction of the web so as to intersect with the first reinforcing fibers, and a second reinforcing fiber so as to overlap the first reinforcing fibers directly or via the web; (d) bonding the first and second reinforcing fibers and the constituent fibers of the web to each other by heat fusion, and bonding the constituent fibers of the web to each other by heat fusion; Its structural feature is to encourage people. The reinforcing fibers may be placed on the surface of the web or may be provided inside the web. Function In the fiber-reinforced nonwoven fabric of the present invention, the first reinforcing fibers and the second reinforcing fibers are arranged to cross each other.
The reinforcing fibers are thermally fused to the fibers constituting the web. For this reason, the reinforcing fibers are arranged in a so-called mesh pattern within the web, and the reinforcing fibers and the web are partially heat-sealed. Therefore, the reinforcing fibers can improve the strength of the nonwoven fabric, especially the strength in the transverse direction, without impairing the elasticity, flexibility, and texture of the nonwoven fabric as a whole. Furthermore, in the nonwoven fabric of the present invention, since the web contains thermoadhesive composite fibers, there is no need to use an adhesive to bond the reinforcing fibers and the web.
Moreover, no drying process is required. Therefore, it has the advantage of low manufacturing cost. EXAMPLES Next, the manufacturing method of the present invention will be explained with reference to the drawings. FIG. 1 is a perspective view showing one embodiment of a nonwoven fabric obtained by the manufacturing method of the present invention, and FIGS. 2 and 3 are partially cutaway perspective views showing other embodiments of the nonwoven fabric obtained by the manufacturing method of the present invention, respectively. It is a diagram. The nonwoven fabric 1 shown in FIG. 1 is a fabric in which reinforcing fibers 3a and 3b are arranged on the surface of a web 2 and heat treated. The reinforcing fibers 3a and 3b are a first reinforcing fiber 3a and a first reinforcing fiber arranged diagonally with respect to the running direction of the web 2 (direction of arrow A in FIG. 1) during carding or movement by a conveyor. 3
The second reinforcing fibers 3b are arranged obliquely to the running direction of the web 2 so as to intersect with the second reinforcing fibers 3b. The first reinforcing fibers 3a and the second reinforcing fibers 3b may be of the same type or may be of different types. In the nonwoven fabric 4 shown in FIG. 2, first and second reinforcing fibers 3a and 3b are arranged inside the web 2 so as to cross each other. In the nonwoven fabric 5 shown in FIG. 3, the first reinforcing fibers 3a and the second reinforcing fibers 3b are
located in different parts of the interior. In each of the nonwoven fabrics shown in FIGS. 1 to 3, the web 2 and the reinforcing fibers 3a, 3b are partially fused to each other. The heat-adhesive composite fiber in the present invention has a core made of a resin with a high melting point, and a resin layer with a low melting point on the surface layer. It refers to fibers that can be bonded to each other or to other fibers by heating. In addition, non-thermal adhesiveness means a property that does not exhibit adhesiveness at a temperature at which the thermally adhesive conjugate fiber exhibits adhesiveness. The heat-adhesive composite fiber is a double fiber whose core is made of a synthetic resin with a high melting point such as polypropylene or polyester, and whose surface layer is provided with a synthetic resin layer with a low melting point such as polyethylene or ethylene-acetic acid bicopolymer. Heavy structure fibers (e.g. Chitsuso Co., Ltd.)
Product name: ES fiber manufactured by Daiwabo Co., Ltd. Product name: NBF manufactured by Daiwabo Co., Ltd.
etc.). In addition to the heat-adhesive conjugate fibers, the web in the present invention contains other fibers such as synthetic fibers such as polyester, nylon, and polypropylene, or chemical fibers such as rayon and acetate.
It may be blended within the range of 70% (weight %, same hereinafter). Note that when the amount of heat-bondable conjugate fibers is less than 30%, the number of heat-bonding points between fibers decreases, resulting in a decrease in the strength of the nonwoven fabric. As the reinforcing fiber in the present invention, any fibrous or thread-like material can be used as long as it has high strength, is longer than the length of the web in the diagonal direction, and has good adhesiveness to the heat-adhesive composite fiber. As the reinforcing fibers, single yarns such as spun yarns made of natural or compound fibers or filament yarns of compound fibers, or twisted yarns thereof can be used. Next, the method for manufacturing the fiber-reinforced nonwoven fabric of the present invention will be explained with reference to Examples. Examples 1 to 3 Double-structured composite heat-adhesive composite fibers containing polypropylene as a high melting point component and polyethylene as a low melting point component and rayon 2d x 51 mm were mixed and 25 g/m was prepared by a carding method. I got 2 webs.
Next, I added 40 count (cotton count) rayon to this item.
As shown in Figure 1, 100% spun yarn (single yarn strength 309 g) was arranged at approximately 25 mm intervals so that each yarn had an inclination of 70 degrees to the running direction of the web, and was heated to 135°C.
The nonwoven fabrics of Examples 1 to 3 were produced by heat treatment using a heat roll of 60 kg/cm. Table 1 shows the measurement results of the strength in the longitudinal direction and the strength in the transverse direction of the nonwoven fabrics of Examples 1 to 3. Note that the first
The strength shown in the table is the value obtained by cutting a rectangular specimen with a width of 5 cm and a length of 20 cm, and tensile measurement using an Instron testing machine at a constant speed of 100 mm/min with a test length of 10 cm. For comparison, the tensile strength of only the nonwoven fabric is also shown.
【表】
発明の効果
叙上のごとく、本発明の製法によりえられる不
織布は強度、とくに横方向の強度が従来のものに
比してきわめて高く、しかも従来の熱接着性複合
繊維を主体とする不織布の熱処理工程において同
時に補強繊維をウエブに固定することができるた
め、その製造コストが低いという顕著な効果を奏
する。[Table] Effects of the invention As mentioned above, the nonwoven fabric obtained by the manufacturing method of the present invention has extremely high strength, especially in the transverse direction, compared to conventional fabrics, and is mainly composed of conventional heat-adhesive conjugate fibers. Since the reinforcing fibers can be fixed to the web at the same time during the heat treatment process of the nonwoven fabric, a remarkable effect is achieved in that the manufacturing cost is low.
第１図は本発明の製法によりえられる不織布の
一実施例を示す斜視図、第２〜３図はそれぞれ本
発明の製法によりえられる不織布の他の実施例を
示す一部切欠斜視図である。
図面の符号、１，４，５……不織布、２……ウ
エブ、３ａ，３ｂ……補強繊維。
FIG. 1 is a perspective view showing one embodiment of a nonwoven fabric obtained by the production method of the present invention, and FIGS. 2 and 3 are partially cutaway perspective views showing other embodiments of the nonwoven fabric obtained by the production method of the present invention, respectively. . Reference numbers in the drawings: 1, 4, 5...nonwoven fabric, 2...web, 3a, 3b...reinforcing fiber.
Claims (1)
性複合繊維の低融点成分より融点の高い他の繊
維０〜70％とからカード法によりウエブを製造
し、 (b) 該ウエブの走行方向に対して斜め方向に第１
の補強繊維を配置し、 (c) 該第１の補強繊維と交差するように前記ウエ
ブの走行方向に対して斜め方向に、第１の補強
繊維と直接またはウエブを介して重なるように
第２の補強繊維 を配置し、 (d) 前記第１および第２の補強繊維と前記ウエブ
の構成繊維とを熱融着によりたがいに接着さ
せ、かつウエブの構成繊維同士を熱融着により
たがいに接着せしめる繊維補強不織布の製法。[Claims] 1 (a) A web is produced by a carding method from 30 to 100% of heat-adhesive conjugate fibers and 0-70% of other fibers having a higher melting point than the low melting point component of the heat-adhesive conjugate fibers. , (b) a first direction diagonally with respect to the running direction of the web;
(c) arranging reinforcing fibers in a diagonal direction with respect to the running direction of the web so as to intersect with the first reinforcing fibers, and a second reinforcing fiber so as to overlap the first reinforcing fibers directly or via the web; (d) bonding the first and second reinforcing fibers and the constituent fibers of the web to each other by heat fusion, and bonding the constituent fibers of the web to each other by heat fusion; A method for manufacturing fiber-reinforced nonwoven fabrics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16004884A JPS6141357A (en) | 1984-07-30 | 1984-07-30 | Fiber reinforced nonwoven fabric |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16004884A JPS6141357A (en) | 1984-07-30 | 1984-07-30 | Fiber reinforced nonwoven fabric |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6141357A JPS6141357A (en) | 1986-02-27 |
| JPS6323307B2 true JPS6323307B2 (en) | 1988-05-16 |
Family
ID=15706790
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16004884A Granted JPS6141357A (en) | 1984-07-30 | 1984-07-30 | Fiber reinforced nonwoven fabric |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6141357A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62215057A (en) * | 1986-03-04 | 1987-09-21 | チッソ株式会社 | Reinforced nonwoven fabric |
| JP2918738B2 (en) * | 1992-02-17 | 1999-07-12 | 三菱電機株式会社 | Photoelectric conversion circuit for distance measuring device |
| DE19930917C1 (en) | 1999-07-06 | 2001-01-11 | Freudenberg Carl Fa | Process for the production of elastic bands for the clothing industry |
| TW202319608A (en) * | 2021-07-15 | 2023-05-16 | 日商興和股份有限公司 | Nonwoven fabric and mask |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4519115Y1 (en) * | 1967-12-26 | 1970-08-03 | ||
| JPS511770A (en) * | 1974-05-22 | 1976-01-08 | Freudenberg Carl | FUKUGOORIMONO |
| JPS5227877A (en) * | 1975-08-29 | 1977-03-02 | Toray Industries | Hygroscopic unwoven sheet |
| JPS53101069A (en) * | 1977-02-16 | 1978-09-04 | Ebauches Sa | Preparation of plastic base plate for plating |
-
1984
- 1984-07-30 JP JP16004884A patent/JPS6141357A/en active Granted
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4519115Y1 (en) * | 1967-12-26 | 1970-08-03 | ||
| JPS511770A (en) * | 1974-05-22 | 1976-01-08 | Freudenberg Carl | FUKUGOORIMONO |
| JPS5227877A (en) * | 1975-08-29 | 1977-03-02 | Toray Industries | Hygroscopic unwoven sheet |
| JPS53101069A (en) * | 1977-02-16 | 1978-09-04 | Ebauches Sa | Preparation of plastic base plate for plating |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6141357A (en) | 1986-02-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |