JPH0791762B2 - Method for manufacturing perforated non-woven fabric - Google Patents
Method for manufacturing perforated non-woven fabricInfo
- Publication number
- JPH0791762B2 JPH0791762B2 JP60119256A JP11925685A JPH0791762B2 JP H0791762 B2 JPH0791762 B2 JP H0791762B2 JP 60119256 A JP60119256 A JP 60119256A JP 11925685 A JP11925685 A JP 11925685A JP H0791762 B2 JPH0791762 B2 JP H0791762B2
- Authority
- JP
- Japan
- Prior art keywords
- fiber
- roll
- web
- heat
- temperature
- 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 - Lifetime
Links
Landscapes
- Nonwoven Fabrics (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は孔あき不織布を連続的に製造する方法に関す
る。The present invention relates to a method for continuously producing a perforated nonwoven fabric.
（従来技術及びその問題点） 従来、熱可塑性繊維を含むウエブを所定の凹凸部を有す
る型板に狭み、加熱加圧処理することにより孔あき不織
布を製造する方法が知られており、例えば、特開昭50−
95566号公報に開示されている。この方法による孔あき
不織布は孔が布全面に分布することにより布に生じる歪
みを吸収することができるので融通性に富み、また部分
熱融着不織布の様な実質的にフイルム状になっている部
分がないので風合もソフトである。しかも、孔部周辺の
繊維が熱融着しているので布の強度は十分に保たれ、孔
部周辺から繊維が抜けたり、亀裂が生じたりすることが
ない。(Prior art and its problems) Conventionally, a method of manufacturing a perforated nonwoven fabric by narrowing a web containing thermoplastic fibers into a template having a predetermined uneven portion and subjecting it to heat and pressure treatment is known, for example, , JP-A-50-
It is disclosed in Japanese Patent No. 95566. The perforated non-woven fabric produced by this method is highly versatile because it can absorb the strain generated in the fabric by distributing the pores over the entire surface of the fabric, and also has a substantially film-like shape such as a partially heat-bonded non-woven fabric. Since there are no parts, the texture is soft. Moreover, since the fibers around the hole are heat-sealed, the strength of the cloth is sufficiently maintained, and the fiber does not fall out from the hole and cracks do not occur.
ところが、上記の方法では型板を使用するので間欠的に
しか生産できず、また熱と圧力のかかる時間が長いの
で、不織布を構成する繊維が溶融、変形、切断などによ
る劣化を生じ、布全体の風合が硬くなったり、耐性が低
下したりする欠点が生じた。However, in the above method, since the template is used, it can be produced only intermittently, and since heat and pressure are applied for a long time, the fibers constituting the nonwoven fabric are deteriorated due to melting, deformation, cutting, etc. There was a defect that the texture became harder and the durability decreased.
そこで、本発明者は型板に代えてエンボスロールを用い
ることにより孔あき不織布を連続的に生産することを試
みたが、ロールとウエブとはロール同士の接線付近で、
ごく短時間接触するだけなので高温高圧をかけないと繊
維が容易に切断できず、孔が形成できなかった。このた
め、不織布を構成する繊維が劣化されるという製造上の
欠点は依然として解決できなかった。Therefore, the present inventor tried to continuously produce a perforated nonwoven fabric by using an embossing roll instead of the template, but the roll and the web are near the tangent line between the rolls,
The fibers could not be easily cut without applying high temperature and high pressure because they were only in contact for a very short time, and holes could not be formed. For this reason, the manufacturing defect that the fibers constituting the nonwoven fabric are deteriorated has not been solved yet.
（発明の目的） 本発明は上記従来技術の欠点を解消すべくなされたもの
であり、孔部周辺の熱可塑性繊維を劣化させることな
く、連続的に製造する方法を提供することを目的とす
る。(Object of the Invention) The present invention has been made to solve the above-mentioned drawbacks of the prior art, and an object of the present invention is to provide a method for continuously producing the thermoplastic fibers around the pores without degrading them. .
（発明の構成） 本発明は単繊維強度1.0〜4.0g/dである、ポリエステル
繊維、ポリオレフィン繊維、ポリアミド繊維の中から選
ばれる熱可塑性繊維からなるウエブを、この熱可塑性繊
維の融点以下の温度を有する、エンボスロールとフラッ
トロールとからなる一対のロールで加熱加圧処理して、
このウエブを打ち抜いて貫通孔を形成すると同時に該貫
通孔周辺の繊維を相互に熱融着させることを特徴とする
孔あき不織布の製造方法である。(Structure of the invention) The present invention has a single fiber strength of 1.0 to 4.0 g / d, a web made of a thermoplastic fiber selected from polyester fiber, polyolefin fiber, and polyamide fiber, at a temperature not higher than the melting point of the thermoplastic fiber. Having, a heat and pressure treatment with a pair of rolls consisting of an embossing roll and a flat roll,
This web is punched to form through holes, and at the same time, fibers around the through holes are thermally fused to each other, which is a method for producing a perforated nonwoven fabric.
本発明に使用する熱可塑性繊維にはポリエステル繊維、
ポリオレフイン繊維、ポリアミド繊維などが適してお
り、その単繊維強度はいずれも1.0〜4.0g/dの範囲にな
ければならない。これは、通常使用される単繊維強度が
4.0g/dを超えるような繊維では、エンボスロールとフラ
ットロールによる加熱加圧処理の際に働く剪断力で繊維
を容易に切断することができず、孔部周辺以外の繊維が
劣化を生じる様な高温高圧にしないと孔がうまく形成で
きないからであり、一方、単繊維強度が1.0g/d未満の繊
維では、孔は容易に形成できるが、得られる不織布の強
度が強く、繊維切れが生じたり、耐性が十分でなかった
りするからである。とくに好ましい単繊維強度は2.0〜
3.0g/dである。The thermoplastic fiber used in the present invention is a polyester fiber,
Polyolefin fibers, polyamide fibers, etc. are suitable, and their single fiber strengths must be in the range of 1.0 to 4.0 g / d. This is because the strength of single fiber that is normally used
If the fiber exceeds 4.0 g / d, the fiber cannot be easily cut by the shearing force that is applied during the heat and pressure treatment by the embossing roll and the flat roll, and the fibers other than around the holes may deteriorate. This is because the pores cannot be formed well unless the temperature and pressure are high.On the other hand, with fibers having a single fiber strength of less than 1.0 g / d, the pores can be easily formed, but the strength of the resulting nonwoven fabric is strong and fiber breakage occurs. Or the tolerance is not sufficient. Particularly preferred single fiber strength is 2.0-
It is 3.0 g / d.
上記繊維を用いて公知の乾式法または湿式法によりウエ
ブ形成する。この後エンボスロールとフラットロールか
らなる一対のロールでウエブを加熱加圧処理するのであ
るが、ここで貫通孔の形成をより容易にするために、ウ
エブに加熱加圧時に粘着性を示す樹脂またはゴムを付与
してもよい。すなわち、上記のような樹脂またはゴムを
付与しておけば、打ち抜き片が容易にロール表面へ付着
するので打ち抜き性が向上する。上記樹脂またはゴムに
は、ポリアクリル酸エステル糸樹脂、エチレン−酢ビ共
重合樹脂、酢酸ビニル糸樹脂、NBR、SBRなどが使用で
き、加熱加圧条件によって粘着性を示すものを適宜選択
して用いればよい。ただし、上記樹脂またはゴムは繊維
の結合を主目的として使用するものではなく、多量に付
与すると不織布の風合が硬くなり、融通性も阻害される
ので、その量は不織布重量の20％以下（固形分付着量）
であることが望ましい。A web is formed using the above fibers by a known dry method or wet method. After that, the web is heated and pressed by a pair of rolls composed of an embossing roll and a flat roll. Here, in order to facilitate formation of the through-holes, a resin that exhibits adhesiveness when heated and pressed on the web or Rubber may be added. That is, if the above-mentioned resin or rubber is applied, the punching piece easily adheres to the roll surface, and the punching property is improved. As the resin or rubber, polyacrylic ester thread resin, ethylene-vinyl acetate copolymer resin, vinyl acetate thread resin, NBR, SBR, etc. can be used, and those showing tackiness depending on heating and pressing conditions are appropriately selected. You can use it. However, the above resin or rubber is not mainly used for bonding fibers, and if a large amount is applied, the texture of the nonwoven fabric becomes hard and flexibility is also impaired, so the amount is 20% or less of the weight of the nonwoven fabric ( (Amount of solids deposited)
Is desirable.
上述の手順で得られたウエブはエンボスロールとフラッ
トロールからなる一対のロールで加熱加圧処理される。
加熱加圧条件は使用する繊維によって異なるが、温度が
使用する繊維の軟化点と融点の範囲にあり、線圧10〜10
0kg/cmの範囲にあれば、孔部周辺以外の繊維を劣化させ
ることなく、容易に孔が形成できる。The web obtained by the above procedure is heated and pressed by a pair of rolls including an embossing roll and a flat roll.
The heating and pressing conditions vary depending on the fiber used, but the temperature is within the range of the softening point and melting point of the fiber used, and the linear pressure is 10 to 10
Within the range of 0 kg / cm, the holes can be easily formed without deteriorating the fibers other than the periphery of the holes.
また、フラットロールの温度をエンボスロールの温度よ
り高温に設定すると、打ち抜き片が優先的にフラットロ
ールに付着するのでよい。これは、もし、この様にしな
いと、エンボスロールに打ち抜き片が堆積し、その除去
が非常に困難であるため、生産が中断する可能性がある
からである。If the temperature of the flat roll is set higher than that of the embossing roll, the punched pieces may preferentially adhere to the flat roll. This is because if this is not done, the embossing rolls may have punching deposits that are very difficult to remove and may interrupt production.
なお、エンボスロール表面の凹凸パターンはとくに設定
されないが、線状、点状、円状、四角形状などの所定形
状の凸部が一様に分布しているものが好ましく、とくに
打ち抜き片の発生をできるだけ少なくし、かつ所望の融
通性を得るためには線状凸部がよい。さらに多方向の融
通性をも要求される場合には線状凸部がクロスするよう
に分布したパターンや、線状凸部が千鳥模様に分布した
パターンを用いれば効果的である。Although the uneven pattern on the surface of the embossing roll is not particularly set, it is preferable that the convex portions of a predetermined shape such as a linear shape, a dot shape, a circular shape, or a quadrangular shape are evenly distributed. In order to reduce the number as much as possible and to obtain the desired flexibility, the linear convex portion is preferable. Further, when flexibility in multiple directions is also required, it is effective to use a pattern in which the linear convex portions are distributed so as to cross or a pattern in which the linear convex portions are distributed in a zigzag pattern.
この凸部面積がロールの表面積に占める割合（もしくは
孔部面積が不織布面積に占める割合）は３〜50％がよ
い。これは50％を超えると孔部が増えすぎて、得られる
不織布の融通性は増すが実質的に強度が低下するからで
あり、３％未満になると孔部が減ると共に熱融着部も減
るので、融通性、強度とも低下するからである。とくに
好ましい凸部面積がロール面積に占める割合は５〜30％
である。The ratio of the convex area to the roll surface area (or the pore area to the nonwoven fabric area) is preferably 3 to 50%. This is because if it exceeds 50%, the number of pores increases too much, so that the flexibility of the resulting nonwoven fabric increases, but the strength is substantially reduced. If it is less than 3%, the number of pores decreases and the number of heat-sealing portions decreases. Therefore, both flexibility and strength decrease. Especially preferred ratio of convex area to roll area is 5 to 30%
Is.
上述の製法により孔部周辺以外の繊維が実質的に劣化さ
れていない孔あき不織布が得られるが、実際の連続生産
を行うためには製造中に生じる打ち抜き片を除去する工
程を加えた方がよい。この打ち抜き片の除去方法として
は、フラットロールの温度をエンボスロールの温度より
高くして優先的に打ち抜き片をフラットロールに付着さ
せ、これをフラットロールから剥ぎ取る方法がよい。フ
ラットロールから付着した打ち抜き片を剥ぎ取るにはブ
レードなどのクリーニング部材をロールに接触させる方
法が簡便であるが、フラットロールが高温に保たれてい
て、表面に付着した打ち抜き片が容易に取れないことも
考えられるので、打ち抜き片をフラットロールから他の
ロールもしくはベルトに転写して冷却し、そのロールも
しくはベルトをクリーニング部材でクリーニングするの
が好ましい。By the above-mentioned manufacturing method, a perforated non-woven fabric in which fibers other than around the pores are not substantially deteriorated can be obtained, but in order to perform actual continuous production, it is better to add a step of removing punched pieces generated during production. Good. As a method for removing the punched pieces, it is preferable that the temperature of the flat roll is set higher than the temperature of the embossing roll, and the punched pieces are preferentially attached to the flat roll and then peeled off from the flat roll. A method of bringing a cleaning member such as a blade into contact with the roll is a simple method for peeling off the punched piece adhered from the flat roll, but since the flat roll is kept at a high temperature, the punched piece adhered to the surface cannot be easily removed. Therefore, it is preferable to transfer the punched piece from the flat roll to another roll or belt for cooling, and clean the roll or belt with a cleaning member.
（実施例および比較例） 実施例１ 単繊維強度2.6g/dのポリエステル繊維をカード法により
目付30g/m2のウエブとし、これを線状凸部が一様に分布
したパターンを有する凸部面積12％のエンジンボスロー
ルとフラットロールとからなる一対のロールで、エンボ
スロール温度198℃、フラットロール温度200℃、線圧60
kg/cmの条件で加熱加圧処理して孔あき不織布を得た。(Examples and Comparative Examples) Example 1 A polyester fiber having a monofilament strength of 2.6 g / d was used as a web having a basis weight of 30 g / m 2 by a card method, and the web had a pattern in which linear projections were uniformly distributed. A pair of rolls consisting of an engine boss roll with an area of 12% and a flat roll. Embossing roll temperature 198 ° C, flat roll temperature 200 ° C, linear pressure 60
Heat-pressurization treatment was carried out under the condition of kg / cm to obtain a perforated nonwoven fabric.
得られた孔あき不織布は風合がソフトで、良好な融通性
を示し、孔部周辺以外の繊維も劣化を受けておらず、強
度、耐性も十分なものだった。The perforated non-woven fabric obtained had a soft texture, exhibited good flexibility, and the fibers other than the periphery of the perforations were not deteriorated, and had sufficient strength and resistance.
比較例 単繊維強度4.8g/dのポリエステル繊維を用いた以外は実
施例１と同様にして製造したが、孔がうまく形成され
ず、本来孔となるべき部分はフイルム化したにとどまっ
た。Comparative Example A sheet was produced in the same manner as in Example 1 except that a polyester fiber having a single fiber strength of 4.8 g / d was used, but the holes were not formed well, and the portions that should originally become holes were formed into a film.
実施例２ 単繊維強度3.2g/dのポリエステル繊維をカード法により
目付30g/m2のウエブとした後、ポリアクリル酸ブチルを
主成分とするアクリルエマルジョン（固形分付着量3g/m
2）を含浸し、上記樹脂が未硬化の状態となるように110
℃で乾燥し、次いで、このウエブを長方形が千鳥模様に
分布したパターンを有する凸部面積20％のエンボスロー
ルとフラットロールとからなる一対のロールで、温度19
0℃、線圧25kg/cmの条件で加熱加圧処理して孔あき不織
布を得た。Example 2 A polyester fiber having a single fiber strength of 3.2 g / d was made into a web having a basis weight of 30 g / m 2 by the card method, and then an acrylic emulsion containing butyl polyacrylate as a main component (solid content: 3 g / m 2)
2 ) impregnate it so that the above resin remains uncured 110
Then, the web is dried at a temperature of 19 ° C. with a pair of rolls consisting of an embossing roll having a convex area of 20% and a flat roll having a pattern in which the rectangles are distributed in a staggered pattern.
A perforated nonwoven fabric was obtained by heat and pressure treatment at 0 ° C. and a linear pressure of 25 kg / cm.
このとき、温度と圧力の条件が実施例１の場合より低か
ったにもかかわらず、打ち抜き片は容易に抜け、きれい
な緑部の孔が形成できた。また、得られた孔あき不織布
は、風合のソフトさと融通性の点では若干実施例１のも
のより劣っていたが、強度と耐性の点では優れていた。At this time, although the conditions of temperature and pressure were lower than in the case of Example 1, the punched piece was easily removed, and a clean green hole was formed. Further, the obtained perforated nonwoven fabric was slightly inferior to that of Example 1 in softness of feeling and flexibility, but was excellent in strength and resistance.
なお、フラットロールに付着した打ち抜き片は転写ロー
ルに転写した後、ブレードで剥ぎ取ったので、打ち抜き
片がフラットロールもしくはエンボスロールに堆積して
生産ができなくなるといったトラブルは全くなく、安定
した連続生産が可能であった。Since the punched pieces attached to the flat roll were transferred to the transfer roll and then stripped off with a blade, there was no trouble that the punched pieces could be deposited on the flat roll or embossing roll, making production impossible, and stable continuous production. Was possible.
（発明の効果） 以上に示すように本発明では単繊維強度が1.0〜4.0g/d
である、ポリエステル繊維、ポリオレフィン繊維、ポリ
アミド繊維の中から選ばれる熱可塑性繊維からなるウエ
ブを、この熱可塑性繊維の融点以下の温度を有する、エ
ンボスロールとフラットロールとからなる一対のロール
で加熱加圧処理するので、孔部周辺以外の繊維を劣化さ
せることのない加熱加圧条件で、打ち抜いて容易に孔を
形成することができる。(Effect of the invention) As described above, in the present invention, the single fiber strength is 1.0 to 4.0 g / d.
A web made of a thermoplastic fiber selected from polyester fiber, polyolefin fiber, and polyamide fiber is heated by a pair of rolls having an embossing roll and a flat roll having a temperature equal to or lower than the melting point of the thermoplastic fiber. Since the pressure treatment is performed, the holes can be easily formed by punching under the heating and pressurizing conditions that do not deteriorate the fibers other than the periphery of the holes.
従って、本発明によれば、孔部周辺の繊維が熱融着され
て強度があり、かつ風合がソフトな孔あき不織布を安定
に連続生産することが可能である。Therefore, according to the present invention, it is possible to stably continuously produce a perforated non-woven fabric that has strength by softening fibers around the perforations and has a soft texture.
なお、本発明により製造される孔あき不織布は、強度、
耐性があり、風合もソフトであるので種々の用途に使用
できるが、とくに優通性に優れるので衣料用芯地に適し
た素材である。The perforated nonwoven fabric produced by the present invention has strength,
Since it is resistant and has a soft texture, it can be used for various purposes, but it is a material suitable for interlining for clothing because it has particularly excellent permeability.
Claims (3)
テル繊維、ポリオレフィン繊維、ポリアミド繊維の中か
ら選ばれる熱可塑性繊維からなるウエブを、該熱可塑性
繊維の融点以下の温度を有する、エンボスロールとフラ
ットロールとからなる一対のロールで加熱加圧処理し
て、該ウエブを打ち抜いて貫通孔を形成すると同時に該
貫通孔周辺の繊維を相互に熱融着させることを特徴とす
る孔あき不織布の製造方法。1. A web made of a thermoplastic fiber selected from polyester fiber, polyolefin fiber and polyamide fiber having a single fiber strength of 1.0 to 4.0 g / d, and having a temperature not higher than the melting point of the thermoplastic fiber. A perforated hole characterized by heat-pressurizing with a pair of rolls consisting of an embossing roll and a flat roll to punch through the web to form a through hole and at the same time heat-bond the fibers around the through hole to each other. Nonwoven fabric manufacturing method.
脂またはゴムを付与した後、上記一対のロールにより加
熱加圧処理する特許請求の範囲第１項記載の孔あき不織
布の製造方法。2. The method for producing a perforated non-woven fabric according to claim 1, wherein a resin or rubber having adhesiveness is applied to the web at the time of heat and pressure treatment, and the web is heat and pressure treated by the pair of rolls.
温度より高いことを特徴とする特許請求の範囲第１項記
載の孔あき不織布の製造方法。3. The method for producing a perforated nonwoven fabric according to claim 1, wherein the temperature of the flat roll is higher than the temperature of the emboss roll.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60119256A JPH0791762B2 (en) | 1985-05-31 | 1985-05-31 | Method for manufacturing perforated non-woven fabric |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60119256A JPH0791762B2 (en) | 1985-05-31 | 1985-05-31 | Method for manufacturing perforated non-woven fabric |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61282464A JPS61282464A (en) | 1986-12-12 |
| JPH0791762B2 true JPH0791762B2 (en) | 1995-10-04 |
Family
ID=14756823
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60119256A Expired - Lifetime JPH0791762B2 (en) | 1985-05-31 | 1985-05-31 | Method for manufacturing perforated non-woven fabric |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0791762B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101270668B1 (en) * | 2012-02-13 | 2013-06-03 | 주식회사 금호 엔.티 | Manufacturing method of nonwoven fabrics with three-dimensional structure patterns by method and the products |
| JP2015066465A (en) * | 2013-09-26 | 2015-04-13 | 三菱製紙株式会社 | Wrinkle adhesion preventing nonwoven fabric |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0242091U (en) * | 1988-09-16 | 1990-03-23 | ||
| EP2083973B1 (en) * | 2006-10-17 | 2011-08-17 | Fiberweb Simpsonville, Inc. | Apertured nonwoven fabric and process and apparatus for producing same |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4873568A (en) * | 1971-12-30 | 1973-10-04 | ||
| JPS5175180A (en) * | 1974-12-17 | 1976-06-29 | Kimberly Clark Co | |
| JPS5234069A (en) * | 1975-09-09 | 1977-03-15 | Toray Industries | Manufacture of unwoven sheet with connected holes |
| JPS5615456A (en) * | 1979-07-18 | 1981-02-14 | Kanai Hiroyuki | Nonwoven fabric adherent core fabric |
| JPS57112452A (en) * | 1980-12-29 | 1982-07-13 | Asahi Chemical Ind | Nonwoven fabric |
| JPS585294A (en) * | 1981-07-02 | 1983-01-12 | Ricoh Co Ltd | Electro-sensitive lethographic plate and its manufacture |
-
1985
- 1985-05-31 JP JP60119256A patent/JPH0791762B2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101270668B1 (en) * | 2012-02-13 | 2013-06-03 | 주식회사 금호 엔.티 | Manufacturing method of nonwoven fabrics with three-dimensional structure patterns by method and the products |
| JP2015066465A (en) * | 2013-09-26 | 2015-04-13 | 三菱製紙株式会社 | Wrinkle adhesion preventing nonwoven fabric |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61282464A (en) | 1986-12-12 |
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