JPH08199457A - Fused non-woven sheet - Google Patents
Fused non-woven sheetInfo
- Publication number
- JPH08199457A JPH08199457A JP7005096A JP509695A JPH08199457A JP H08199457 A JPH08199457 A JP H08199457A JP 7005096 A JP7005096 A JP 7005096A JP 509695 A JP509695 A JP 509695A JP H08199457 A JPH08199457 A JP H08199457A
- Authority
- JP
- Japan
- Prior art keywords
- fiber
- woven sheet
- sheet
- water
- layer
- 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.)
- Pending
Links
- 239000000835 fiber Substances 0.000 claims abstract description 61
- 239000002131 composite material Substances 0.000 claims abstract description 16
- 229920000642 polymer Polymers 0.000 claims abstract description 12
- 229920000098 polyolefin Polymers 0.000 claims abstract description 10
- 150000002148 esters Chemical class 0.000 claims abstract description 9
- 239000002250 absorbent Substances 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 12
- 238000010521 absorption reaction Methods 0.000 abstract description 7
- 230000035699 permeability Effects 0.000 abstract description 7
- 239000010410 layer Substances 0.000 description 24
- 238000002844 melting Methods 0.000 description 7
- 230000008018 melting Effects 0.000 description 7
- 238000010438 heat treatment Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- -1 polyethylene terephthalate Polymers 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 238000004049 embossing Methods 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 239000004745 nonwoven fabric Substances 0.000 description 3
- 229920002994 synthetic fiber Polymers 0.000 description 3
- 239000012209 synthetic fiber Substances 0.000 description 3
- 229920000297 Rayon Polymers 0.000 description 2
- 150000001336 alkenes Chemical class 0.000 description 2
- 230000004927 fusion Effects 0.000 description 2
- QQVIHTHCMHWDBS-UHFFFAOYSA-N isophthalic acid Chemical compound OC(=O)C1=CC=CC(C(O)=O)=C1 QQVIHTHCMHWDBS-UHFFFAOYSA-N 0.000 description 2
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 2
- 239000005022 packaging material Substances 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 239000002964 rayon Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 229920003043 Cellulose fiber Polymers 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 229920006221 acetate fiber Polymers 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002346 layers by function Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- TVMXDCGIABBOFY-UHFFFAOYSA-N octane Chemical compound CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
Landscapes
- Nonwoven Fabrics (AREA)
Abstract
(57)【要約】
【目的】 通気性、吸水性及びヒートシール性に優れた
安価な融着不織シートを提供する。
【構成】 エステル系重合体とオレフィン系重合体より
成りオレフィン系重合体の少なくとも一部が繊維表面に
露出した複合繊維から成る繊維層Ａの少なくとも片面
に、吸水性繊維２０〜８０％と前記複合繊維８０〜２０
％より成る繊維層Ｂが熱融着されている融着不織シー
ト。(57) [Summary] [Purpose] To provide an inexpensive fused non-woven sheet having excellent air permeability, water absorption and heat sealability. [Structure] At least one surface of a fiber layer A composed of a conjugate fiber composed of an ester polymer and an olefin polymer, at least a part of which is exposed on the fiber surface, and 20 to 80% of a water-absorbent fiber and the above composite. Fiber 80-20
A fused non-woven sheet in which a fiber layer B of 10% is heat fused.
Description
【０００１】[0001]
【産業上の利用分野】本発明は、通気性、吸水性及びヒ
ートシール性を要求される用途に好適に使用される融着
不織シートに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fused non-woven sheet suitable for use in applications requiring air permeability, water absorption and heat sealability.
【０００２】[0002]
【従来の技術】従来から、不織シートの用途分野におい
て通気性、吸水性及びヒートシール性を具備した不織シ
ートの需要が増大しているが、今のところこれら三つの
性能を全て満足しているものは見当たらない。例えば合
成繊維スパンボンドは通気性、ヒートシール性はあるが
吸水性に乏しく、短繊維から構成される一般の合成繊維
とセルロース系繊維を混用して得た不織シートは通気
性、吸水性はあるが十分なヒートシール性が得られな
い。また不織布に適当なフィルム又は接着性熱可塑性樹
脂をコートする方法は工程が煩雑でコスト高になりやす
い欠点があった。2. Description of the Related Art Conventionally, there has been an increasing demand for non-woven sheets having air permeability, water absorption and heat sealing properties in the field of non-woven sheet applications. I can't find anything that is. For example, synthetic fiber spunbond has breathability and heat sealability but poor water absorbency, and a non-woven sheet obtained by mixing general synthetic fiber composed of short fibers and cellulosic fiber has breathability and water absorbency. However, sufficient heat sealability cannot be obtained. Further, the method of coating a non-woven fabric with a suitable film or an adhesive thermoplastic resin has a drawback that the process is complicated and the cost is apt to increase.
【０００３】[0003]
【発明が解決しようとする課題】本発明は、通気性、吸
水性及びヒートシール性に優れた安価な融着不織シート
を提供するものである。DISCLOSURE OF THE INVENTION The present invention provides an inexpensive fused non-woven sheet excellent in air permeability, water absorption and heat sealability.
【０００４】[0004]
【課題を解決するための手段】本発明は、エステル系重
合体とオレフィン系重合体より成りオレフィン系重合体
の少なくとも一部が繊維表面に露出した複合繊維から成
る繊維層Ａの少なくとも片面に、吸水性繊維２０〜８０
％と前記複合繊維８０〜２０％より成る繊維層Ｂが熱融
着されていることを特徴とする融着不織シートを上記課
題を解決する手段とするものである。Means for Solving the Problems The present invention is directed to at least one surface of a fiber layer A composed of a conjugate fiber composed of an ester polymer and an olefin polymer, at least a part of which is exposed on the fiber surface. Water absorbent fiber 20-80
% And the fibrous layer B composed of 80 to 20% of the composite fibers are heat-fused, which is a means for solving the above problems.
【０００５】本発明で用いる複合繊維は、エステル系重
合体とオレフィン系重合体よりなりオレフィン系重合体
の少なくとも一部が繊維表面に露出したものである。複
合繊維の形態としては並列型又は芯鞘型等の比較的単純
な形のもの、あるいは多芯鞘型及び多層接合等の何れで
もよいが、強度等の面から芯鞘型が好ましい。複合繊維
を構成するエステル系重合体としてはポリエチレンテレ
フタレートあるいはイソフタル酸等を含んだ共重合体等
があげられる。またオレフィン系重合体としては、エチ
レン、プロピレン、ブテン、オクタン、アクリル酸、酢
酸ビニル等の重合体が挙げられるが、オレフィン系重合
体はエステル系重合体より融点が低いことが肝要であ
る。複合繊維の繊度は０．５〜１０ｄが好ましく、１〜
５ｄがより好ましい。繊度が０．５ｄより小さいと融着
の程度を調整することが難しく通気量が小さくなり、繊
度が１０ｄより大きくなると通気量が大きくなりすぎ
る。通気量を下げるために融着の程度をあげると柔軟性
がなくなり好ましくない。The conjugate fiber used in the present invention comprises an ester polymer and an olefin polymer, and at least a part of the olefin polymer is exposed on the fiber surface. The form of the composite fiber may be a relatively simple form such as a side-by-side type or a core-sheath type, or a multi-core sheath type or a multi-layered joint, but the core-sheath type is preferable from the viewpoint of strength and the like. Examples of the ester-based polymer constituting the composite fiber include a copolymer containing polyethylene terephthalate or isophthalic acid. Examples of the olefin polymer include polymers of ethylene, propylene, butene, octane, acrylic acid, vinyl acetate and the like, but it is important that the olefin polymer has a lower melting point than the ester polymer. The fineness of the composite fiber is preferably 0.5 to 10d, and 1 to
5d is more preferable. If the fineness is less than 0.5 d, it is difficult to adjust the degree of fusion, and the air flow rate becomes small. If the fineness is more than 10 d, the air flow rate becomes too large. Increasing the degree of fusion in order to reduce the air flow rate is not preferable because the flexibility is lost.
【０００６】他の複合繊維としては融点が異なるオレフ
ィン系の重合体からなる複合繊維があるが熱処理条件が
狭く加工性が劣り、強力も比較的低い。又ナイロン等の
複合繊維は比較的価格が高い上に耐候性が劣るという欠
点がある。本発明では上記複合繊維が最も適している。Another composite fiber is a composite fiber made of an olefin polymer having different melting points, but the heat treatment conditions are narrow and the workability is poor, and the strength is relatively low. In addition, composite fibers such as nylon are relatively expensive and have poor weather resistance. In the present invention, the above conjugate fiber is most suitable.
【０００７】本発明で用いる吸水性繊維としてはレーヨ
ン繊維、アセテート繊維、ベンベルグ繊維等のセルロー
ス系繊維が好適に用いられるが、高吸水性合成繊維も使
用可能であり、吸水性としては公定水分率５％以上であ
ることが必要である。吸水性繊維の混用率を２０〜８０
％とするのは２０％未満では実質的に吸水性が劣るため
であり、８０％を越えると熱処理による接着性が不十分
となり、繊維の脱落、毛羽立ち等の不都合が生じやすい
からである。Cellulose fibers such as rayon fiber, acetate fiber, and bemberg fiber are preferably used as the water-absorbing fiber used in the present invention, but highly water-absorbing synthetic fiber can also be used, and the water-absorbing property has an official moisture regain. It should be 5% or more. Mixing ratio of water absorbing fibers is 20-80
When the content is less than 20%, the water absorbency is substantially inferior, and when it exceeds 80%, the adhesiveness due to the heat treatment becomes insufficient, and inconveniences such as fiber dropping and fuzzing are likely to occur.
【０００８】次いで本発明の融着不織シートの複層構造
について説明すると、複層構造の一層は、エステル系重
合体とオレフィン系重合体より成りオレフィン系重合体
の少なくとも一部が繊維表面に露出した複合繊維から成
る繊維層Ａである。この繊維層Ａは後述する吸水性繊維
を含む繊維層Ｂの接着機能を発揮すると共に二層の繊維
構造で使用する場合はヒートシール性をも発揮する。
又、本発明の融着不織シートの破断強力等の強度物性を
付与する中心繊維層でもある。吸水性繊維を含む繊維層
Ｂは前述の複合繊維のみからなる繊維層Ａの少なくとも
片面に積層される。繊維層Ｂを独立して設置するのは、
吸水性機能層を表面に位置するために吸水性能を前記接
着機能と分離してシート設計ができるためであり、これ
によってあらゆる用途に対して適応可能となる。繊維層
Ａの両面に繊維層Ｂを積層する場合には、いずれか一方
の繊維層Ｂの複合繊維の混用率を前記した範囲内におい
て高くしヒートシール性をも備えることが可能である。Next, the multi-layer structure of the fusible nonwoven sheet of the present invention will be described. One layer of the multi-layer structure is composed of an ester polymer and an olefin polymer, and at least a part of the olefin polymer is on the fiber surface. It is a fiber layer A composed of exposed composite fibers. This fiber layer A exhibits the adhesive function of the fiber layer B containing the water-absorbing fibers described later, and also exhibits the heat-sealing property when used in a two-layer fiber structure.
It is also a central fiber layer that imparts strength physical properties such as breaking strength of the fused non-woven sheet of the present invention. The fiber layer B containing the water-absorbent fiber is laminated on at least one surface of the fiber layer A composed of only the above-mentioned composite fiber. Independently installing the fiber layer B is
This is because the water-absorbing functional layer is located on the surface, so that the water-absorbing performance can be separated from the adhesive function in the sheet design, and thus the sheet can be adapted to any application. When the fiber layers B are laminated on both sides of the fiber layer A, it is possible to increase the mixing ratio of the composite fibers of either one of the fiber layers B within the above-mentioned range to provide heat sealability.
【０００９】本発明の融着不織シートは、繊維層Ａの少
なくとも片面に繊維層Ｂを積層した状態で熱エンボスカ
レンダー又は熱ベルト式ラミネーターに通して加熱圧着
することによって得られる。用いる複合繊維を構成する
エステル系重合体及びオレフィン系重合体の融点及び加
熱加圧方法によって加熱温度は異なるが、オレフィン系
重合体の融点以上で且つエステル系重合体の融点未満で
ある。また積層繊維層を水流交絡法やニードルパンチ法
によって予め不織布シートを形成した後に熱エンボスカ
レンダー又は熱ベルト式ラミネーターに通すことによっ
て得ることもできる。本発明の融着不織シートの目付量
には限定はないが３０〜２００ｇ／ｍ2の範囲が好まし
い。The fusible non-woven sheet of the present invention is obtained by heat-pressing the fiber layer A with the fiber layer B laminated on at least one surface thereof through a hot embossing calendar or a heat belt type laminator. Although the heating temperature varies depending on the melting points of the ester-based polymer and the olefin-based polymer and the heating / pressurizing method constituting the conjugate fiber to be used, the heating temperature is higher than the melting point of the olefin-based polymer and lower than the melting point of the ester-based polymer. Alternatively, the laminated fiber layer can be obtained by forming a nonwoven fabric sheet in advance by a hydroentangling method or a needle punching method and then passing the nonwoven fabric sheet through a hot embossing calendar or a hot belt type laminator. The unit weight of the fusible nonwoven sheet of the present invention is not limited, but is preferably in the range of 30 to 200 g / m 2 .
【００１０】次に本発明を実施例によって更に具体的に
説明する。Next, the present invention will be described more specifically by way of examples.
【００１１】（実施例１）芯部が融点２６０℃のポリエ
チレンテレフタレート、鞘部が融点１１０℃のポリエチ
レンであり、芯部と鞘部の構成比が１：１である太さ２
デニール、長さ５１ｍｍの複合繊維から成る目付３０ｇ
／ｍ2 の繊維層Ａと、水分率１１％の太さ１．５デニー
ル、長さ５１ｍｍ、セミダルのレーヨンを６０％、前記
複合繊維を４０％用いた目付３０ｇ／ｍ2 の繊維層Ｂと
の積層体を、２台の綿用フラットカードとクロスウエッ
バーを用いて形成した。次いで積層体を熱ベルト式ラミ
ネーターにより温度１８０℃、面圧力５ｋｇ／ｃｍ2 、
処理速度１０ｍ／分で熱処理して融着不織シートを得
た。得られたシートは、通気性、吸水性及びヒートシー
ル性に優れたシートで食品包装及びメディカル用途に適
したシートであった。(Example 1) The core 2 is made of polyethylene terephthalate having a melting point of 260 ° C, the sheath is made of polyethylene having a melting point of 110 ° C, and the thickness of the core 2 to the sheath is 1: 1.
Denier with a unit weight of 51 mm and a composite weight of 51 mm 30 g
/ M 2 fiber layer A, and a moisture content of 11%, a thickness of 1.5 denier, a length of 51 mm, a semi-dal rayon of 60%, and a weight of 30 g / m 2 of the composite fiber of 40%. Was formed using two cotton flat cards and a cross webber. Next, the laminated body is heated at a temperature of 180 ° C. and a surface pressure of 5 kg / cm 2 by a heat belt type laminator,
Heat treatment was performed at a processing speed of 10 m / min to obtain a fused non-woven sheet. The obtained sheet was a sheet excellent in air permeability, water absorption and heat sealability and was suitable for food packaging and medical applications.
【００１２】（実施例２）実施例１で用いた複合繊維か
らなる目付２０ｇ／ｍ2 の繊維層Ａの片面に実施例１で
用いた繊維層Ｂを積層し、他面に複合繊維使用量を７０
％に変更した繊維層Ｂを積層した３層構造積層体を形成
した。次いで積層体を凸部の形状が０．８ｍｍ×０．５
ｍｍであり、押え部の面積が３０％であるエンボスロー
ラで温度１６０℃，線圧１０ｋｇ／ｃｍ，処理速度１５
ｍ／分で処理して融着不織シートを得た。得られたシー
トは、通気性、吸水性及びヒートシール性に優れたシー
トで簡易衣料及びクッション包装材等に適したシートで
あった。(Example 2) The fiber layer B used in Example 1 was laminated on one side of the fiber layer A having a basis weight of 20 g / m 2 made of the composite fiber used in Example 1, and the amount of the composite fiber used was used on the other side. 70
% To form a three-layer structure laminated body in which the fiber layer B was laminated. Next, the laminated body is made to have a convex shape of 0.8 mm × 0.5.
mm, with an embossing roller having a pressing area of 30%, the temperature is 160 ° C., the linear pressure is 10 kg / cm, and the processing speed is 15
m / min to obtain a fused non-woven sheet. The obtained sheet was a sheet excellent in air permeability, water absorption and heat sealability and was a sheet suitable for simple clothing, cushion packaging materials and the like.
【００１３】[0013]
【発明の効果】本発明の融着不織シートは通気性、吸水
性及びヒートシール性を具備したシートであって、包装
材料、簡易衣料、メディカル用等種々の用途に供するこ
とができ、また製造方法が簡単で安価に得ることが可能
である。EFFECT OF THE INVENTION The fusible nonwoven sheet of the present invention is a sheet having air permeability, water absorption and heat sealability, and can be used for various purposes such as packaging materials, simple clothing and medical applications. The manufacturing method is simple and can be obtained at low cost.
Claims (1)
より成りオレフィン系重合体の少なくとも一部が繊維表
面に露出した複合繊維から成る繊維層Ａの少なくとも片
面に、吸水性繊維２０〜８０％と前記複合繊維８０〜２
０％より成る繊維層Ｂが熱融着されていることを特徴と
する融着不織シート。1. A water-absorbent fiber of 20 to 80% is provided on at least one surface of a fiber layer A composed of a conjugate fiber composed of an ester polymer and an olefin polymer, at least a portion of which is exposed on the fiber surface. The composite fiber 80-2
A fused non-woven sheet characterized in that a fiber layer B consisting of 0% is heat-fused.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7005096A JPH08199457A (en) | 1995-01-17 | 1995-01-17 | Fused non-woven sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7005096A JPH08199457A (en) | 1995-01-17 | 1995-01-17 | Fused non-woven sheet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08199457A true JPH08199457A (en) | 1996-08-06 |
Family
ID=11601857
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7005096A Pending JPH08199457A (en) | 1995-01-17 | 1995-01-17 | Fused non-woven sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08199457A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001003527A1 (en) * | 1999-07-12 | 2001-01-18 | Uni-Charm Co., Ltd. | Disposable jacket |
-
1995
- 1995-01-17 JP JP7005096A patent/JPH08199457A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001003527A1 (en) * | 1999-07-12 | 2001-01-18 | Uni-Charm Co., Ltd. | Disposable jacket |
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