JPH086242B2 - Heat-shrinkable non-woven sheet and method for producing the same - Google Patents
Heat-shrinkable non-woven sheet and method for producing the sameInfo
- Publication number
- JPH086242B2 JPH086242B2 JP62065841A JP6584187A JPH086242B2 JP H086242 B2 JPH086242 B2 JP H086242B2 JP 62065841 A JP62065841 A JP 62065841A JP 6584187 A JP6584187 A JP 6584187A JP H086242 B2 JPH086242 B2 JP H086242B2
- Authority
- JP
- Japan
- Prior art keywords
- fiber
- sheet
- woven sheet
- heat
- polyester
- 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 - Fee Related
Links
Landscapes
- Nonwoven Fabrics (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は熱収縮特性、熱成形特性と優れたフィルター
特性を合せ持った不織シートとその製造方法に関する。
かかる不織シートは各種収縮放送材料、特にバクテリア
バリアー性などを要求されるメディカル分野の包装材
料、或は各種成形フィルター、芳香剤など薬剤を徐々に
放散する徐放性容器の成形材料として利用される。TECHNICAL FIELD The present invention relates to a nonwoven sheet having both heat shrinkability and thermoforming characteristics and excellent filter characteristics, and a method for producing the same.
Such a non-woven sheet is used as various shrinkable broadcasting materials, particularly packaging materials in the medical field requiring bacterial barrier properties, etc., or various molding filters, molding materials for sustained release containers that gradually release drugs such as aromatic agents. It
包材分野で製品を包装する手段として収縮フィルムを
利用した収縮包装が、種々の形状の製品をコンパクトに
包装出来ることと包装工程の効率の良さから急速に普及
して来ている。Shrink wrapping using a shrink film as a means for wrapping products in the packaging material field has rapidly spread due to the ability to compactly pack products of various shapes and the efficiency of the wrapping process.
こうした普及に伴い収縮包装材料に対する要求も高度
化して来ており、その一つにメディカル用途向けに医療
器具を包装状態でエチレンオキサイドなどのガス滅菌を
行い、そのまゝで保存出来るガス透過性で且つバクテリ
アバリアー性を持った収縮包材がある。With the spread of such products, the demand for shrink wrapping materials has also become more sophisticated. One of them is that the medical instruments for medical use are sterilized by gas such as ethylene oxide in a packaged state and can be stored as it is. In addition, there are shrink wrap materials that have a bacterial barrier property.
従来この用途にはポリエチレンの極細繊維シート（デ
ュポン社 タイベック ）が用いられている。しかしな
がら、この素材は熱収縮性を持たないため収縮包装工程
には適用することが出来ない。したがってバクテリアバ
リアー性など優れたフィルター特性を有し且つ、収縮包
装材料として必要な熱収縮特性、強度などの物性を具備
した素材が望まれている。 Conventionally, polyethylene microfiber sheets (data
Thuyeon Tyvek ) Is used. But
However, since this material does not have heat shrinkability, the shrink wrapping process
Cannot be applied to. Therefore the bacteria
Shrink wrap with excellent filter properties such as rearing
Equipped with physical properties such as heat shrinkage characteristics and strength required for packaging materials
The desired material is desired.
又、包装分野のもう一つの新しい方向として、芳香
剤、脱酸素剤など薬剤の効果を持続して発揮させる徐放
性をもった包装材料があり、現在テフロンやポリエチレ
ンの微多孔フィルムや前記タイベック がこの目的に使
用されている。この場合の包装形態は、袋状であり、使
用の利便性、意匠性などから徐放性の容器を作るために
成形性とフィルター特性を兼ね備えたシート材料が望ま
れている。 Also, as another new direction in the packaging field, fragrances
Sustained release that continuously exerts the effects of drugs such as drugs and oxygen absorbers
There are packaging materials with good properties, and currently Teflon and polyethylene are available.
Microporous film and Tyvek Used for this purpose
Have been used. In this case, the packaging is bag-shaped and
To make a sustained release container for convenience and design
A sheet material that has both moldability and filter characteristics is desired
Have been.
前記したニーズを満すべく、本発明の第一の目的は、
熱収縮特性と高度なフィルター特定を持った不織シート
を提供すること、第二の目的は優れた熱成形性と高度な
フィルター特性を持った不織シートを提供することにあ
る。さらに第三の目的は前述の性能を有する不織シート
の製造方法を提供することにある。In order to satisfy the above-mentioned needs, the first object of the present invention is to
A second object is to provide a non-woven sheet having heat-shrinking properties and high filter characteristics, and a second object is to provide a non-woven sheet having excellent thermoformability and high filter properties. A third object is to provide a method for manufacturing a non-woven sheet having the above-mentioned performance.
本発明の前述目的はポリエステル系ポリマーの半延伸
糸よりなる長繊維不織シートとメルトブロー法で得られ
る0.1〜５μｍの平均繊維径のポリエステル系繊維シー
トを積層・接合した複合シートによって達成される。The above-mentioned object of the present invention is achieved by a composite sheet obtained by laminating and joining a long fiber non-woven sheet made of a semi-stretched yarn of a polyester polymer and a polyester fiber sheet having an average fiber diameter of 0.1 to 5 μm obtained by a melt blow method.
本発明に於けるポリエステル系ポリマーとしては二次
転移温度が室温以上で実質的に非晶性の半延伸糸が安定
に製造出来、又加熱により結晶化させることが出来るポ
リエステル及びその共重合体を使用出来る。Examples of the polyester-based polymer in the present invention include polyesters and copolymers thereof that can stably produce a substantially amorphous semi-drawn yarn having a second-order transition temperature of room temperature or higher and can be crystallized by heating. Can be used.
特にポリエチレンテレフタレートが、熱収縮特性、熱
成形性と得られた製品の耐熱性、耐候性、強度などの面
から優れた結果をもたらす。In particular, polyethylene terephthalate provides excellent results in terms of heat shrinkage properties, thermoformability, and heat resistance, weather resistance, and strength of the obtained product.
以下、詳細に説明については、ポリエチレンテレフタ
レートを例として説明する。In the following, detailed description will be made by taking polyethylene terephthalate as an example.
本発明の不織シートはスパンボンド法によりポリエチ
レンテレフタレートポリマーを2000〜4000m/分の紡糸速
度で紡糸して得られる複屈折率Δn0.01〜0.05（好まし
くは0.03〜0.04）、密度1.320〜1.350（好ましくは1.33
0〜1.340）のポリエチレンテレフタレート繊維からなる
長繊維不織シート（Ａ）とメルトブロー法（ヴァンＡ・
ヴェンテIndustrial and Engineering Chemistry Vol 4
8 No.8 1342〜1346（'56）に記載の方法）で製造した平
均繊維径５μｍ以下のポリエチレンテレフタレート繊維
シート（Ｂ）を積層し、少なくとも一方がエンボス模様
を有する一対の熱ロールを用いて、後述する条件で圧着
面積率１〜50％で部分熱圧着をすることで得られる。こ
ゝでメルトブロー法で得られる極細繊維シートとの複合
相手として半延伸ポリエステル長繊維シートを採用する
ことが熱収縮特性と90〜200℃の広範な温度範囲での熱
成形特性及び引張、引裂など強度面での補強効果などを
保有する本発明の不織シートを得るために最も重要な点
である。The nonwoven sheet of the present invention has a birefringence Δn 0.01 to 0.05 (preferably 0.03 to 0.04) obtained by spinning a polyethylene terephthalate polymer at a spinning speed of 2000 to 4000 m / min by a spunbond method, and a density of 1.320 to 1.350 ( Preferably 1.33
0 to 1.340) polyethylene terephthalate fiber long-fiber non-woven sheet (A) and melt blow method (Van A.
Vente Industrial and Engineering Chemistry Vol 4
8 No. 8 1342 to 1346 ('56)), and a polyethylene terephthalate fiber sheet (B) having an average fiber diameter of 5 µm or less is laminated, and a pair of hot rolls at least one of which has an embossed pattern are used. It can be obtained by performing partial thermocompression bonding with a compression area ratio of 1 to 50% under the conditions described below. It is possible to adopt a semi-stretched polyester filament fiber sheet as a composite partner with the ultrafine fiber sheet obtained by the melt-blowing method here, as well as heat shrinkage characteristics and thermoforming characteristics in a wide temperature range of 90 to 200 ° C, as well as tensile, tear, etc. This is the most important point in order to obtain the nonwoven sheet of the present invention having a reinforcing effect in terms of strength.
半延伸糸のΔｎが0.01以下の場合、得られた不織シー
トは脆く、耐熱・耐候性に劣り包装材料、成形材料とし
て物性的に不充分なものとなる。一方Δｎが0.06以上、
密度1.350以上の場合、伸度が小さく成形時の応力に対
応が難しく、又メルトブロー極細繊維シートとの接合に
際しても、150℃を越える温度が必要となり、熱収縮特
性も著しく損われ30％以下となり本発明の目的とする不
織シートを得ることが出来ない。When Δn of the semi-drawn yarn is 0.01 or less, the obtained nonwoven sheet is brittle and is inferior in heat resistance and weather resistance, resulting in insufficient physical properties as a packaging material and a molding material. On the other hand, Δn is 0.06 or more,
When the density is 1.350 or more, the elongation is small and it is difficult to cope with the stress during molding, and when joining with the melt blown ultrafine fiber sheet, a temperature of more than 150 ° C is required, and the heat shrinkage property is significantly impaired to 30% or less. The non-woven sheet aimed at by the present invention cannot be obtained.
これに対しΔｎが0.030、密度が1.335のような本発明
の範囲内の場合、本発明の不織シートは沸水面積収縮率
30％以上の熱収縮特性を有し、且つ表面耐摩擦性、強度
など包装材料として充分な物性、機能を保有する。又、
この不織シートは190℃〜200℃の広い温度範囲に亘り、
50kg/cm2以下の低い伸長応力を示し、安定した熱成形加
工性を有している。特にこの不織シートを予め熱収縮さ
せたシートは150℃での30％伸長応力が30kg/cm2以下、1
50℃での破断伸度が100％を越え、深絞り部などがある
複雑なシート成形が容易に可能な高度の熱成形特性を保
有している。この発明の不織シートは、このような熱収
縮性、熱成形性、強度などの特性と同時に１μの粒子を
殆ヾ100％捕捉するフィルター機能を持ち、これにフッ
素系、或はシリコン系薬剤による撥水処理を施すことに
より、500mmAqを越える耐水圧を示すなど、バクテリア
バリアー性にも優れた素材となり、前述したメディカル
分野の包装材料、或は薬剤の徐放性容器などの成形材料
として有用性を発揮する。On the other hand, when the Δn is within the range of the present invention such as 0.030 and the density is 1.335, the nonwoven sheet of the present invention has a boiling water area shrinkage ratio.
It has a heat shrinkage property of 30% or more and possesses sufficient physical properties and functions as a packaging material such as surface abrasion resistance and strength. or,
This non-woven sheet covers a wide temperature range from 190 ℃ to 200 ℃,
It exhibits a low elongation stress of 50 kg / cm 2 or less and has stable thermoformability. In particular, the non-woven sheet that was previously heat-shrunk had a 30% elongation stress at 150 ° C of 30 kg / cm 2 or less, 1
The breaking elongation at 50 ° C exceeds 100%, and it possesses high thermoforming properties that enable complex sheet forming such as deep drawing to be easily performed. The nonwoven sheet of the present invention has such properties as heat shrinkability, thermoformability, strength and the like, and at the same time, has a filter function of capturing 100% of particles of 1 μ, and a fluorine-based or silicon-based agent. By applying water repellent treatment with water, it becomes a material with excellent bacterial barrier properties, such as showing a water pressure resistance of over 500 mmAq, and is useful as a molding material for the above-mentioned medical field packaging materials or sustained-release containers for drugs. Exert its abilities.
次に本発明の不織シートの製造に際して、ポリエステ
ル半延伸長繊維シート（Ａ）とメルトブロー繊維シート
（Ｂ）の接合は、少なくとも一方がエンボス模様を持っ
た一対の熱ロールを使用して部分熱圧着することによる
場合に、熱収縮特性、表面耐摩擦性、接合強度、シート
の目的均一性などを満足させる本発明の不織シートの製
造方法として、種々検討の結果次の２つの方法を見出す
に到った。Next, in the production of the nonwoven sheet of the present invention, the joining of the polyester semi-stretched continuous fiber sheet (A) and the melt blown fiber sheet (B) is carried out by using a pair of heat rolls at least one of which has an embossed pattern. As a method for producing the non-woven sheet of the present invention satisfying heat shrinkage characteristics, surface abrasion resistance, bonding strength, sheet homogeneity in the case of pressure bonding, the following two methods have been found as a result of various studies. Came to.
第一の方法は、積層された該不織シート（Ａ），
（Ｂ）を二次転移温度〜二次転移温度＋80℃（好ましく
は＋50℃、より好ましくは＋30℃）の条件で部分熱圧着
することにより均一でソフトな風合と、高度なフィルタ
ー特性をもった沸水面積収縮率が30％以上の熱収縮性不
織シートが得られる。The first method is to laminate the nonwoven sheet (A),
By partially thermocompressing (B) under the conditions of the second-order transition temperature to the second-order transition temperature + 80 ° C (preferably + 50 ° C, more preferably + 30 ° C), a uniform and soft texture and high filter characteristics are obtained. A heat-shrinkable non-woven sheet having a boiling water area shrinkage of 30% or more is obtained.
不織シートの熱収縮率が、エステル半延伸長繊維の紡
速と不織シートの部分熱圧着条件を前記した範囲で変化
させることにより30〜85％の範囲で自由にコントロール
が出来ることも本発明の特徴の一つである。The heat shrinkage rate of the non-woven sheet can be freely controlled within the range of 30 to 85% by varying the spinning speed of the ester semi-stretched long fibers and the partial thermocompression bonding condition of the non-woven sheet within the above range. This is one of the features of the invention.
熱圧着の条件が前記範囲以外では不織シートの接合一
体化が出来なかったり、熱収縮性を持たないほど本発明
の目的を達成することが出来ない。例えば、通常のポリ
エチレンテレフタレート・スパンボンド不織布の部分熱
圧着の行われている180℃〜240℃の温度領域では、不織
シートの熱収縮率が30％以下になると同時に不織シート
に熱歪による目付斑の拡大、風合の脆化更には流体通過
圧力損失の増大などフィルター特性の低下を惹起する。If the conditions for thermocompression bonding are outside the above range, the nonwoven sheets cannot be joined and integrated, or the object of the present invention cannot be achieved to the extent that they do not have heat shrinkability. For example, in the temperature range of 180 ° C to 240 ° C where partial thermocompression bonding of ordinary polyethylene terephthalate / spunbonded non-woven fabric is performed, the heat shrinkage rate of the non-woven sheet becomes 30% or less and at the same time, the non-woven sheet is affected by thermal strain. It causes deterioration of filter characteristics such as enlargement of unevenness of weight, embrittlement of feeling, and increase of pressure loss through fluid.
次に第二の方法は部分熱圧着時に使用する一対の熱ロ
ールに温度差をつけて処理する方法である。この方法は
表面の毛羽立ちなど表面摩擦耐久性に優れた本発明の不
織シートを得る上で特に良好な不織シートの製造方法で
ある。すなわち半延伸長繊維不織シート（Ａ）とメルト
ブロー法による極細繊維シート（Ｂ）を積層し、少なく
とも一方の表面にエンボス模様をもった一対のロールを
使用、メルトブロー極細繊維シート（Ｂ）側と接するロ
ール温度が二次転移温度＋30℃以下、半延伸長繊維シー
ト（Ａ）側と接するロールが二次転移温度＋50℃以上、
融点−60℃（好ましくは80℃）以下の条件で部分熱圧着
することにより均一で表面耐摩擦性に優れた熱収縮性、
熱成形加工性の不織シートが得られる。Next, the second method is a method in which a pair of heat rolls used at the time of partial thermocompression bonding are treated with a temperature difference. This method is a particularly good method for producing a non-woven sheet for obtaining the non-woven sheet of the present invention having excellent surface friction durability such as fluffing on the surface. That is, a semi-stretched long fiber non-woven sheet (A) and an ultrafine fiber sheet (B) prepared by the melt blowing method are laminated, and a pair of rolls having an embossed pattern on at least one surface is used. The roll temperature in contact with the second transition temperature + 30 ° C or lower, the roll in contact with the semi-stretched continuous fiber sheet (A) side has the second transition temperature + 50 ° C or higher,
Heat shrinkage that is uniform and excellent in surface abrasion resistance by partial thermocompression bonding under the condition of melting point -60 ° C (preferably 80 ° C) or less,
A thermoformable nonwoven sheet is obtained.
部分熱圧着温度が前記条件を越えると熱収縮性の低
下、熱成形性の低下が起り、本発明の目的とする不織シ
ートは得られない。When the partial thermocompression bonding temperature exceeds the above conditions, the heat shrinkability and the thermoformability are deteriorated, and the nonwoven sheet intended by the present invention cannot be obtained.
第一の方法と同様、この方法に於てもエステル半延伸
長繊維の紡速と不織シートの部分熱圧着条件を前記した
範囲で変化させることにより沸水面積収縮率30〜85％の
範囲で熱収縮特性を自由にコントロール出来る。上記熱
接合以外に超音波による部分融着接合、或は接着剤によ
る部分接合によっても本発明でいう接合が出来るが、融
着接合が好ましい。ポリエステル半延伸長繊維不織シー
ト（Ａ）とメルトブロー法によるポリエステル極細繊維
シート（Ｂ）の積層の構成は２層積層〔（Ａ）／
（Ｂ）〕、メルトブロー繊維シートを芯にしたサンドイ
ッチ積層〔（Ａ）／（Ｂ）／（Ａ）〕或は半延伸長繊維
シートを芯にしたサンドイッチ積層〔（Ｂ）／（Ａ）／
（Ｂ）〕を目的、用途に応じて採用出来る。In the same manner as the first method, in this method as well, the boiling water area shrinkage ratio is in the range of 30 to 85% by changing the spinning speed of the ester semi-stretched long fibers and the partial thermocompression bonding condition of the non-woven sheet within the above range. You can freely control the heat shrinkage characteristics. In addition to the above thermal bonding, the partial fusion bonding using ultrasonic waves or the partial fusion using an adhesive can be used in the present invention, but fusion bonding is preferable. The laminated structure of the polyester semi-stretched long fiber non-woven sheet (A) and the polyester ultrafine fiber sheet (B) obtained by the melt-blowing method is a two-layer structure [(A) /
(B)], a sandwich laminate having a meltblown fiber sheet as a core [(A) / (B) / (A)] or a sandwich laminate having a semi-stretched continuous fiber sheet as a core [(B) / (A) /
(B)] can be adopted according to the purpose and application.
又熱成形に際して、熱収縮性の本発明の不織シートを
そのまゝ使用することも可能であるが、熱セット或は収
縮処理により不織シートが安定化して上で整形すること
が望ましい。特に予め沸水処理により熱収縮させた本発
明の不織シートは、広い温度領域（90゜〜100℃）で低
応力高伸長特性を有し深絞しなどの複雑な成形が可能な
ことも本発明の特長である。It is also possible to use the heat-shrinkable non-woven sheet of the present invention as it is for thermoforming, but it is desirable that the non-woven sheet is stabilized by heat setting or shrinking treatment and then shaped. In particular, the non-woven sheet of the present invention that has been heat-shrinked by boiling water treatment in advance has low stress and high elongation characteristics in a wide temperature range (90 ° to 100 ° C), and is capable of complicated forming such as deep drawing. This is a feature of the invention.
熱成形方法としては金型成形、真空成形、圧空成形な
ど一般的なシート成形方法を使用することが出来る。As the thermoforming method, a general sheet forming method such as mold forming, vacuum forming, pressure forming can be used.
以下に本発明を実施例を挙げて具体的に説明する。尚
実施例その他に記載した物性の定義及び測定方法を以下
に示す。The present invention will be specifically described below with reference to examples. The definitions of physical properties and measuring methods described in Examples and others are shown below.
硝酸カルシュウム〜水系の密度勾配管を用いて測定し
た。試料は予め低密度液中に１時間、減圧下に浸漬して
脱泡した後、密度勾配管に投入、30℃で20時間放置した
時の試料の位置する液の密度から密度を求める。 The measurement was performed using a density gradient tube of calcium nitrate-water system. The sample is previously immersed in a low-density liquid for 1 hour under reduced pressure to defoam, then placed in a density gradient tube and left at 30 ° C. for 20 hours to determine the density from the density of the liquid in which the sample is located.
白色光下で偏光顕微鏡ベレック式コンペンセーターを
用いて複屈折率（Δｎ）を測定する。 The birefringence (Δn) is measured using a polarizing microscope Bereck compensator under white light.
試料25cm×25cmにタテ、ヨコ各々20cmの位置にマーキ
ングして沸水に３分間浸漬した後、取出して試料の寸法
変化を測り面積収縮率をｎ＝５の平均値で測定する。 A 25 cm × 25 cm sample is marked at a position of 20 cm vertically and 20 cm horizontally and immersed in boiling water for 3 minutes, then taken out and the dimensional change of the sample is measured to measure the area shrinkage ratio with an average value of n = 5.
島津製作所Auto Graph DSS−2000型万能引張試験機に
より把握長5cm、引張速度10cm/分で150℃で30％伸長時
の応力を測定、その値を試料の断面積で除した値で表わ
す。 Measured by Shimadzu Auto Graph DSS-2000 type universal tensile tester at a length of 5 cm and a tensile speed of 10 cm / min, the stress at 30% elongation was measured at 150 ° C, and the value is divided by the cross-sectional area of the sample.
島津製作所Auto Graph DSS−2000型万能引張試験機に
より把握長10cm、引張速度20cm/分で測定した。 It was measured at a gripping length of 10 cm and a pulling speed of 20 cm / min using a Shimadzu Auto Graph DSS-2000 type universal tensile tester.
タテ20cm×ヨコ3cmの試験片を摩擦試験機II型（学振
型）を用いて荷重500gで100往復摩擦させた後、試験片
の外観変化を下記の判定基準に照らして判定し耐摩擦性
の評価とした。 After rubbing a 20 cm x 3 cm test piece 100 times back and forth with a friction tester type II (Gakushin type) under a load of 500 g, the appearance change of the test piece was judged according to the following criteria, and the abrasion resistance Was evaluated.
（判定基準） Ａ級：全く毛羽立ちがない。(Judgment Criteria) Grade A: There is no fuzz at all.
Ｂ級：少し毛羽立ちがあるが目立たない。Class B: Some fluff but not noticeable.
Ｃ級：毛羽立ちが目立つ。Class C: Conspicuous fuzz.
◎集塵性（捕集効率）:JIS Z−8901試験用ダスト13種Ｂ
法の0.3μｍ平均のステアリン酸エアゾルのダストの捕
集効率測定により評価した。◎ Dust collection performance (collection efficiency): JIS Z-8901 test dust 13 types B
It was evaluated by measuring the dust collection efficiency of the stearic acid aerosol of 0.3 μm average by the method.
◎圧力損失：捕集効率測定と同様の条件で測定される圧
力損失により評価した。◎ Pressure loss: Evaluated by the pressure loss measured under the same conditions as the collection efficiency measurement.
実施例１ 孔径0.25mm、孔数1300ケの1m巾矩型紡糸口金を用い
て、吐出量1100g/分でηsp/c（オルソクロロフェノル溶
媒）0.72のポリエチレンテレフタレートをポリマー温度
290℃で紡出し、紡口直下1000mmの位置にある牽引用エ
アーサッカーのエアー圧力を変えて紡糸速度2000m/分、
2500m/分で金網コンベアー上に目付30g/m2の長繊維シー
トとして捕集、上部が2mmピッチのピンポイント模様を
有するエンボスロールと表面が平滑な下部ロールとの間
でロール温度75℃、線圧20kg/cmで熱圧着して本発明に
使用する半延伸長繊維不織シートを得た。比較例として
紡糸速度が5000m/分の長繊維不織シートを採取、それら
の物性を第一表に示す。Example 1 Using a 1 m wide rectangular spinneret with a hole diameter of 0.25 mm and 1300 holes, polyethylene terephthalate with an ηsp / c (orthochlorophenol solvent) of 0.72 was discharged at a polymer temperature of 1100 g / min.
Spin at 290 ° C, change the air pressure of the towing air sucker located 1000 mm directly below the spinneret, and spin at 2000 m / min.
Collected as a long fiber sheet with a basis weight of 30 g / m 2 on a wire mesh conveyor at 2500 m / min, a roll temperature of 75 ° C between the emboss roll having a pinpoint pattern with a 2 mm pitch on the upper part and the lower roll with a smooth surface, and a wire. The semi-stretched long fiber nonwoven sheet used in the present invention was obtained by thermocompression bonding under a pressure of 20 kg / cm. As a comparative example, a long fiber non-woven sheet having a spinning speed of 5000 m / min was sampled and the physical properties thereof are shown in Table 1.
一方本発明で使用するメルトブロー極細繊維シート
は、孔径0.30mm、孔数1000ケ、加熱スチーム噴射溝巾0.
25mmのメルトブロー用のダイを用いて、吐出量300g/分
でηsp/c0.65のポリエチレンテレフタレートをポリマー
温度310℃、加熱スチーム圧力3.0kg/cm2、温度370℃で
メルトブローし、金網コンベアー上に平均繊径1.7μの
目付20g/m2の極細繊維シートとして捕集、常温で一対の
フラットロールで線圧5kg/cmでプレスすることによって
製造した。 On the other hand, the melt blown ultrafine fiber sheet used in the present invention has a hole diameter of 0.30 mm, a hole number of 1000, and a heating steam injection groove width of 0.
Using a 25 mm melt-blowing die, polyethylene terephthalate with a discharge rate of 300 g / min and ηsp / c 0.65 was melt-blown at a polymer temperature of 310 ° C, a heating steam pressure of 3.0 kg / cm 2 , and a temperature of 370 ° C, and then placed on a wire mesh conveyor. It was produced by collecting as an ultrafine fiber sheet having an average fiber diameter of 1.7μ and a basis weight of 20 g / m 2 , and pressing it at a normal temperature with a pair of flat rolls at a linear pressure of 5 kg / cm.
この様にして得た半延伸長繊維不織シートとメルトブ
ロー極細繊維シートを積層し、上部が2mmピッチのピン
ポイント模様を有するエンボスロールと表面が平滑な下
部ロールを用いて、上下ロール温度90℃,100℃,150℃、
線圧20kg/cmで40m/分のスピードで部分熱圧着処理を行
った。得られた不織シートの特性を第２表に示す。The semi-stretched long-fiber non-woven sheet thus obtained and the melt-blown ultrafine fiber sheet are laminated, and an upper roll having a pinpoint pattern of 2 mm pitch and a lower roll having a smooth surface are used, and the upper and lower roll temperatures are 90 ° C. , 100 ℃, 150 ℃,
Partial thermocompression bonding was performed at a linear pressure of 20 kg / cm and a speed of 40 m / min. The properties of the resulting nonwoven sheet are shown in Table 2.
実験No.（１），（２）で示す本発明の不織シートは
熱収縮特性、熱成形性、優れたフィルター特性を兼ね備
えた材料であった。The non-woven sheet of the present invention shown in Experiment Nos. (1) and (2) was a material having both heat shrinkability, thermoformability, and excellent filter characteristics.
実施例２ 実施例１第１表の実験No.（２）の半延伸繊維シート
（目付80g/m2）と実施例１のメルトブロー極細繊維シー
ト（目付40g/m2）を積層し、上部が圧着面積12％のマイ
ナス柄のエンボス模様を有するロールと表面が平滑な下
部ロールを用いて、半延伸長繊維シートの接する上部エ
ンボスロールを140℃、下部フラットロールを80℃、線
圧20kg/cmで40m/分のスピードで部分熱圧着処理を行っ
た。 Example 2 Example 1 The semi-stretched fiber sheet of Experiment No. (2) in Table 1 (area weight 80 g / m 2 ) and the melt-blown ultrafine fiber sheet of Example 1 (area weight 40 g / m 2 ) were laminated, and the upper part Using a roll with a negative embossing pattern with a crimping area of 12% and a lower roll with a smooth surface, the upper embossing roll in contact with the semi-stretched long fiber sheet is 140 ° C, the lower flat roll is 80 ° C, and the linear pressure is 20 kg / cm. Partial thermocompression bonding was performed at a speed of 40 m / min.
その結果沸水面積収縮率63％、表面耐摩擦性Ａ級の均
一な不織シートが得られ、フィルター特性も0.3μの粒
子を99％以上捕捉、又フッソ系の市販の撥水加工剤で処
理することにより、耐水圧500mmAqの性能が得られた。As a result, a uniform non-woven sheet with boiling water area shrinkage of 63% and surface abrasion resistance class A was obtained, and 99% or more of particles with a filter property of 0.3μ were captured and treated with a commercially available fluorine-based water repellent finishing agent. By doing so, the performance of water pressure resistance of 500 mmAq was obtained.
又、この不織シートをスチーマーで収縮処理すること
により目付340g/m2の緻密な不織シートが得られた。こ
の不織シートは150℃での破断伸度が320％、30％伸長応
力が18kg/cm2と優れた熱成形性を保有していた。By shrinking this non-woven sheet with a steamer, a dense non-woven sheet having a basis weight of 340 g / m 2 was obtained. This non-woven sheet had excellent thermoformability with a breaking elongation at 150 ° C of 320% and a 30% elongation stress of 18 kg / cm 2 .
本発明による不織シートは前記したように、熱収縮特
性と優れたフィルター特性をもち、又広い温度範囲で熱
成形が可能なポリエステル系不織シートであり、特殊包
装材料、成型材料として優れた性能を発揮する。As described above, the non-woven sheet according to the present invention is a polyester-based non-woven sheet which has heat shrinkability and excellent filter characteristics and can be thermoformed in a wide temperature range, and is excellent as a special packaging material or molding material. Demonstrate performance.
即ち、メディカル用バクテリアバリアー収縮包材、薬
剤（芳香剤、殺菌剤、脱酸素剤、乾燥剤など）の徐放性
容器の成形材料等に広く活用することが出来る。That is, it can be widely used as a shrinkable packaging material for a bacterial barrier for medical use, a molding material for a sustained-release container for drugs (aromatic agent, bactericide, deoxidizer, desiccant, etc.).
Claims (5)
織シートと平均繊維径0.1〜５μｍのポリエステル系メ
ルトブロー繊維からなる繊維シートが積層一体化されて
形成され、且つ沸水面積収縮率が30％以上であることを
特徴とする熱収縮性不織シート。1. A long fiber non-woven sheet made of polyester semi-drawn yarn and a fiber sheet made of polyester melt-blown fiber having an average fiber diameter of 0.1 to 5 μm are laminated and formed, and have a boiling water area shrinkage of 30%. A heat-shrinkable non-woven sheet characterized by the above.
トであり、沸水収縮処理後の前記不織シートの150℃で
の破断伸度が100％以上、150℃での30％伸長応力が30kg
/cm2以下であることを特徴とする特許請求の範囲第一項
記載の熱収縮性不織シート。2. The polyester is polyethylene terephthalate, and the breaking elongation of the nonwoven sheet after boiling water shrinkage treatment at 150 ° C. is 100% or more, and the 30% elongation stress at 150 ° C. is 30 kg.
The heat-shrinkable non-woven sheet according to claim 1, wherein the heat-shrinkable nonwoven sheet has a density of not more than / cm 2 .
トブロー繊維からなる不織シートが、圧着面積率１〜50
％の部分熱圧着によって一体化されていることを特徴と
する特許請求の範囲第一項記載の熱収縮性不織シート。3. A long-fiber non-woven sheet made of semi-stretched yarn and a non-woven sheet made of melt-blown fibers have a pressure-bonding area ratio of 1 to 50.
% Heat-shrinkable nonwoven sheet according to claim 1, characterized in that it is integrated by partial thermocompression bonding.
0のポリエステル系繊維からなる長繊維不織シートと平
均繊維径0.1〜５μｍのポリエステル系メルトブロー繊
維からなる繊維シートを積層し、少なくとも一方の表面
にエンボス模様を有する一対のロールを用いて、ロール
表面温度が前記ポリエステル系繊維のポリマーの二次転
移温度以上、二次転移温度＋80℃以下の条件で部分熱圧
着を施すことを特徴とする熱収縮性不織シートの製造方
法。4. Birefringence Δn 0.01 to 0.05, density 1.320 to 1.35
A long fiber non-woven sheet made of polyester fiber of No. 0 and a fiber sheet made of polyester melt-blown fiber having an average fiber diameter of 0.1 to 5 μm are laminated, and a roll surface having a pair of rolls having an embossed pattern on at least one surface is used. A method for producing a heat-shrinkable non-woven sheet, which comprises performing partial thermocompression bonding under the condition that the temperature is not less than the second-order transition temperature of the polymer of the polyester fiber and not more than the second-order transition temperature + 80 ° C.
0のポリエステル系繊維からなる長繊維不織シート
（Ａ）と平均繊維径0.1〜５μｍのポリエステル系メル
トブロー繊維からなる繊維シート（Ｂ）を積層、少なく
とも一方の表面にエンボス模様を有する一対のロールに
温度差をつけて、長繊維不織シート（Ａ）側のロールを
二次転移温度＋50℃以上、融点−60℃以下、メルトブロ
ー繊維シート（Ｂ）の側のロールを二次転移温度＋30℃
以下で部分熱圧着を施すことを特徴とする熱収縮性不織
シートの製法方法。5. Birefringence Δn 0.01-0.05, density 1.320-1.35
A long-fiber non-woven sheet (A) made of polyester fiber of 0 and a fiber sheet (B) made of polyester-based meltblown fiber having an average fiber diameter of 0.1 to 5 μm are laminated to form a pair of rolls having an embossed pattern on at least one surface. With the temperature difference, the roll on the long fiber non-woven sheet (A) side has a secondary transition temperature of + 50 ° C or higher and the melting point of -60 ° C or lower, and the roll of the meltblown fiber sheet (B) has a secondary transition temperature of + 30 ° C.
A method for producing a heat-shrinkable non-woven sheet, which comprises performing partial thermo-compression bonding below.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62065841A JPH086242B2 (en) | 1987-03-23 | 1987-03-23 | Heat-shrinkable non-woven sheet and method for producing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62065841A JPH086242B2 (en) | 1987-03-23 | 1987-03-23 | Heat-shrinkable non-woven sheet and method for producing the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63235560A JPS63235560A (en) | 1988-09-30 |
| JPH086242B2 true JPH086242B2 (en) | 1996-01-24 |
Family
ID=13298643
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62065841A Expired - Fee Related JPH086242B2 (en) | 1987-03-23 | 1987-03-23 | Heat-shrinkable non-woven sheet and method for producing the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH086242B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019124231A1 (en) * | 2017-12-22 | 2019-06-27 | 旭化成株式会社 | Nonwoven fabric and composite sound-absorbing material using same as skin material |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4863785A (en) * | 1988-11-18 | 1989-09-05 | The James River Corporation | Nonwoven continuously-bonded trilaminate |
| JP2770379B2 (en) * | 1989-03-07 | 1998-07-02 | 東レ株式会社 | Non-woven |
| JP2797482B2 (en) * | 1989-07-21 | 1998-09-17 | 東洋紡績株式会社 | Nonwoven fabric with good uniformity |
| JP2790875B2 (en) * | 1989-10-25 | 1998-08-27 | 花王株式会社 | Surface sheet for absorbent article and method for producing the same |
| JP5603575B2 (en) * | 2008-10-21 | 2014-10-08 | 旭化成せんい株式会社 | Laminated nonwoven fabric |
| JP5290895B2 (en) * | 2009-07-17 | 2013-09-18 | 旭化成せんい株式会社 | Composite sheet and molded body |
| CN117858985A (en) * | 2021-11-09 | 2024-04-09 | 东洋纺Mc株式会社 | Long fiber nonwoven fabric and bag using same |
-
1987
- 1987-03-23 JP JP62065841A patent/JPH086242B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019124231A1 (en) * | 2017-12-22 | 2019-06-27 | 旭化成株式会社 | Nonwoven fabric and composite sound-absorbing material using same as skin material |
| KR20200088443A (en) * | 2017-12-22 | 2020-07-22 | 아사히 가세이 가부시키가이샤 | Non-woven fabric and composite sound-absorbing material using this as a skin material |
| JPWO2019124231A1 (en) * | 2017-12-22 | 2020-11-26 | 旭化成株式会社 | Non-woven fabric and composite sound absorbing material using this as a skin material |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63235560A (en) | 1988-09-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4039809B2 (en) | Three-dimensional structured fiber planar product and method for producing the same | |
| JP4785700B2 (en) | Nonwoven manufacturing method | |
| US7968481B2 (en) | Hot-melt conjugate fiber | |
| WO1995003172A1 (en) | Barrier fabrics which incorporate multicomponent fiber support webs | |
| JPH09316765A (en) | Unidirectionally stretchable nonwoven fabric and its production | |
| JP5603575B2 (en) | Laminated nonwoven fabric | |
| JP5191256B2 (en) | Low weight nonwoven fabric | |
| JPH06207323A (en) | Biodegradable latent-crimping conjugate filament and nonwoven fabric made of the filament | |
| JPH086242B2 (en) | Heat-shrinkable non-woven sheet and method for producing the same | |
| JP3736014B2 (en) | Laminated nonwoven fabric | |
| JP4614876B2 (en) | Latent crimped fiber | |
| JP4131852B2 (en) | Heat-sealable composite fiber | |
| JP3992528B2 (en) | Heat shrinkable nonwoven fabric | |
| JP5213558B2 (en) | Non-woven fabric for thermoforming and thermoforming method using the same | |
| JP2008144321A (en) | Nonwoven fabric | |
| WO2018225671A1 (en) | Long-fiber nonwoven fabric and filter reinforcement material using same | |
| JP2007297723A (en) | Formable filament nonwoven fabric | |
| JP2019073809A (en) | Biodegradable filament nonwoven fabric having thermal moldability | |
| JP7287385B2 (en) | Long fiber nonwoven fabric and filter reinforcing material using the same | |
| JPH03294559A (en) | Production of non-woven fabric laminate | |
| JP3712115B2 (en) | High-rigidity nonwoven fabric, curtain core and manufacturing method thereof | |
| JPH0288056A (en) | Surface material for sanitary good and manufacture thereof | |
| JP5190441B2 (en) | Non-woven | |
| JP2006138046A (en) | Spunbonded nonwoven fabric for heat sealing and filter produced by using the same | |
| JP4774900B2 (en) | Elastic nonwoven fabric and article using the same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |