JP2795487B2 - Fiber laminate - Google Patents

Fiber laminate

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Publication number
JP2795487B2
JP2795487B2 JP28080689A JP28080689A JP2795487B2 JP 2795487 B2 JP2795487 B2 JP 2795487B2 JP 28080689 A JP28080689 A JP 28080689A JP 28080689 A JP28080689 A JP 28080689A JP 2795487 B2 JP2795487 B2 JP 2795487B2
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JP
Japan
Prior art keywords
fiber
polyester
binder fiber
dsc
crystallization peak
Prior art date
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Expired - Fee Related
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JP28080689A
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Japanese (ja)
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JPH03146754A (en
Inventor
伸洋 松永
勝良 新倉
Original Assignee
ユニチカ株式会社
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Description

【発明の詳細な説明】 (産業上の利用分野) 本発明は,高接着強力,柔らかな風合及び優れた吸水
性を有し,自然界に置かれたとき生分解をする不織布又
は固綿を得ることができる繊維積層物に関するものであ
る。
DETAILED DESCRIPTION OF THE INVENTION (Industrial application field) The present invention relates to a nonwoven fabric or cotton having high adhesive strength, soft feeling and excellent water absorption, and which is biodegradable when placed in nature. It relates to a fiber laminate obtainable.

(従来の技術) 従来から,使い捨ておむつや生理用品等の衛生材料用
の吸収体,液体吸収性ベツドシーツ,医療用吸収パツド
等の素材として,パルプ,木綿又はレーヨン等のセルロ
ース系繊維とバインダ繊維とを混合した繊維積層物を熱
処理して得られる不織布や固綿が使用されている。そし
て,これらの用途においては,バインダ繊維に柔軟性が
要求され,通常,ポリオレフイン系バインダ繊維が使用
されている。(例えば,特開昭58−180614号公報,特開
昭58−191215号公報) しかしながら,前記用途の不織布又は固綿の構成成分
であるバインダ繊維として,ポリオレフイン系バインダ
繊維を使用すると,柔らかな風合を得ることはできる
が,接着強力が低くなり,不織布としたときの強度が不
十分であり,また,使い捨てをしたとき前記バインダ繊
維が分解されずに長く自然界に残るという問題があっ
た。
(Prior art) Conventionally, as materials for absorbents for liquids such as disposable diapers and sanitary articles, liquid absorbent bed sheets, and medical absorbent pads, cellulose-based fibers such as pulp, cotton or rayon, and binder fibers are used. Non-woven fabric and solid cotton obtained by heat-treating a fiber laminate in which is mixed is used. In these applications, the binder fibers are required to have flexibility, and polyolefin-based binder fibers are usually used. However, when a polyolefin-based binder fiber is used as the binder fiber which is a constituent component of the nonwoven fabric or the solid cotton for the above-mentioned application, a soft wind is obtained. Although a bond can be obtained, there is a problem that the bonding strength is low, the strength of the nonwoven fabric is insufficient, and the binder fibers remain in the natural world for a long time without being decomposed when disposable.

(発明が解決しようとする課題) 本発明は,前記のような問題を解決しようとするもの
であり,セルロース系繊維と良好に接着し,高接着強
力,柔らかな風合及び優れた吸水性を有し,自然界に置
かれたとき生分解をする不織布又は固綿を得ることがで
きるセルロース系繊維とポリエステル系バインダ繊維と
からなる繊維積層物を提供しようとするものである。
(Problems to be Solved by the Invention) The present invention is intended to solve the above-mentioned problems, and has good adhesion to cellulosic fibers, high adhesion strength, soft feeling and excellent water absorption. It is an object of the present invention to provide a fiber laminate comprising a cellulose-based fiber and a polyester-based binder fiber, which have a nonwoven fabric or a solid cotton that has biodegradability when placed in the natural world.

(課題を解決するための手段) 本発明者らは,前記問題を解決すべく鋭意検討の結
果,本発明に到達した。すなわち,本発明は,セルロー
ス系繊維と,炭素数4以上の直鎖脂肪族成分を含み,結
晶融点が60℃以上220℃以下で,かつDSCにより測定され
る降温結晶化ピークの高さ(b)とDSCにより測定され
る降温結晶化ピークの半価幅(a)との比(b/a)が0.2
以上である低融点結晶性ポリエステル系バインダ繊維と
からなる繊維積層物を要旨とするものである。
(Means for Solving the Problems) As a result of intensive studies to solve the above problems, the present inventors have reached the present invention. That is, the present invention comprises a cellulosic fiber, a linear aliphatic component having 4 or more carbon atoms, a crystal melting point of 60 ° C. or more and 220 ° C. or less, and a height of a cooling crystallization peak (b) measured by DSC. ) And the half-width (a) of the cooling crystallization peak measured by DSC (b / a) are 0.2
The gist of the present invention is a fiber laminate comprising the above-mentioned low-melting crystalline polyester-based binder fiber.

以下,本発明を詳細に説明する。 Hereinafter, the present invention will be described in detail.

まず,本発明の繊維積層物の構成成分であるポリエス
テル系バインダ繊維とは,炭素数4以上の直鎖脂肪族成
分を含むポリエステル重合体からなるものであり,脂肪
族成分としては,1,4−ブタンジオール,1,8−オクタンジ
オール,1,9−ノナンジオール,1,10−デカンジオール等
の脂肪族ジオール,また,アジピン酸,セバチン酸,テ
トラデカン−1,14−ジカルボン酸,オクタデカン−1,18
−ジカルボン酸,エイコサン−1,20−ジカルボン酸等の
脂肪族ジカルボン酸が挙げられる。
First, the polyester-based binder fiber which is a component of the fiber laminate of the present invention is made of a polyester polymer containing a linear aliphatic component having 4 or more carbon atoms. Aliphatic diols such as butanediol, 1,8-octanediol, 1,9-nonanediol, 1,10-decanediol, and adipic acid, sebacic acid, tetradecane-1,14-dicarboxylic acid, octadecane-1 , 18
Aliphatic dicarboxylic acids such as dicarboxylic acid and eicosane-1,20-dicarboxylic acid.

次に,本発明の繊維積層物の構成成分である前記ポリ
エステル系バインダ繊維は,結晶融点が60℃以上220℃
以下の低融点ポリエステル重合体からなるものであり,
前記結晶融点60℃未満であると,セルロース系繊維を接
着させるとき接着力が不十分となったり,被接着体から
ポリエステル成分が浸み出したりするという問題が生じ
るので好ましくない。一方,結晶融点が220℃を超える
と,セルロース系繊維を接着させるための熱処理時にセ
ルロース系繊維が変色又は分解したりするという問題が
生じるので好ましくない。
Next, the polyester-based binder fiber, which is a component of the fiber laminate of the present invention, has a crystal melting point of 60 ° C. or more and 220 ° C.
It consists of the following low melting point polyester polymer,
If the crystal melting point is lower than 60 ° C., it is not preferable because the adhesive strength becomes insufficient when the cellulose fibers are bonded, and the polyester component oozes out from the adherend. On the other hand, if the crystal melting point exceeds 220 ° C., it is not preferable because a problem such as discoloration or decomposition of the cellulosic fiber occurs during heat treatment for bonding the cellulosic fiber.

また,前記ポリエステル系バインダ繊維は,DSCにより
測定される降温結晶化ピークの高さ(b)とDSCにより
測定される降温結晶化ピークの半価幅(a)との比(b/
a)が0.2以上,好ましくは0.5以上,特に好ましくは1.0
以上の結晶性ポリエステル重合体からなるものであり,
前記比(b/a)が0.2未満であると耐熱性が劣り,熱処理
時に軟化したり,不織布としたときの強力が低下した
り,固綿としたときヘタリが生じたりするという問題が
生じるので好ましくない。
In addition, the polyester binder fiber has a ratio (b / b) of the height (b) of the cooling crystallization peak measured by DSC and the half width (a) of the cooling crystallization peak measured by DSC.
a) is 0.2 or more, preferably 0.5 or more, particularly preferably 1.0
Consisting of the above crystalline polyester polymer,
When the ratio (b / a) is less than 0.2, heat resistance is inferior, and there is a problem that the heat treatment is softened, the strength of the nonwoven fabric is reduced, and the solidified cotton is set. Not preferred.

本発明にいう低融点結晶性ポリエステル重合体の具体
例としては,次の第1表に示したようなものが挙げられ
る。
Specific examples of the low melting crystalline polyester polymer referred to in the present invention include those shown in Table 1 below.

これらの低融点結晶性ポリエステル重合体の内,経済
性を考えると,テレフタル酸,エチレングリコール,1,4
−ブタンジオール,1,6−ヘキサンジオール,ネオペンチ
ルグリコールを構成成分とするものが好ましい。また,
生分解性を考えると,直鎖脂肪族エステル結合を多く含
有するものが好ましい。
Among these low-melting crystalline polyester polymers, terephthalic acid, ethylene glycol, 1,4
Those comprising -butanediol, 1,6-hexanediol and neopentyl glycol as constituents are preferred. Also,
Considering biodegradability, those containing a large amount of linear aliphatic ester bonds are preferred.

本発明の低融点結晶性ポリエステル重合体には,本発
明の効果を損なわない範囲で他の成分を共重合してもよ
く,また,艶消剤,安定剤,着色剤等の添加剤を加えて
もよい。
To the low melting crystalline polyester polymer of the present invention, other components may be copolymerized as long as the effects of the present invention are not impaired, and additives such as matting agents, stabilizers, and coloring agents may be added. You may.

なお,本発明のポリエステル系バインダ繊維は,前記
低融点結晶性ポリエステル重合体を接着成分とするもの
であり,このポリエステル重合体のみからなる単成分繊
維及びこのポリエステル重合体が単繊維表面の全部又は
一部を形成している芯鞘型,サイドバイサイド型,海島
型,割繊型等の複合繊維を含むものである。
The polyester-based binder fiber of the present invention has the low-melting crystalline polyester polymer as an adhesive component. It includes a core-sheath type, side-by-side type, sea-island type, split fiber type and other composite fibers that form a part.

本発明の繊維積層物は,以下の方法によって製造する
ことができる。
The fiber laminate of the present invention can be manufactured by the following method.

まず,ポリエステル系バインダ繊維は,常法により製
造することができる。すなわち,ジカルボン酸成分とグ
リコール成分又はこれらのエステル形成性誘導体をエス
テル化又はエステル交換反応した後,重縮合反応を行っ
てポリエステル重合体とし,得られたポリエステル重合
体を溶融紡糸して,又は必要に応じて紡糸後延伸・熱処
理をして繊維とする。この繊維の混合比(重量比)は必
要に応じて適宜定められるが,通常,全繊維の重量に対
し5重量%以上70重量%以下とするとよい。
First, the polyester-based binder fiber can be manufactured by an ordinary method. That is, after a dicarboxylic acid component and a glycol component or an ester-forming derivative thereof are esterified or transesterified, a polycondensation reaction is carried out to obtain a polyester polymer, and the obtained polyester polymer is melt-spun, or After the spinning, the fibers are drawn and heat-treated to obtain fibers. The mixing ratio (weight ratio) of the fibers is appropriately determined as necessary, but is generally preferably 5% by weight or more and 70% by weight or less based on the weight of all the fibers.

次に,繊維積層物は,セルロース系繊維とポリエステ
ル系バインダ繊維とを,通常のカード法,エアレイ法,
湿式抄紙法等によって開繊,積層することにより製造す
ることができ,その方法は目的に応じて適宜選択すると
よい。
Next, the fiber laminate is formed by combining the cellulosic fiber and the polyester binder fiber by the usual card method, air lay method,
It can be manufactured by opening and laminating by a wet papermaking method or the like, and the method may be appropriately selected according to the purpose.

不織布又は固綿は,得られた繊維積層物を,前記ポリ
エステル系バインダ繊維の融点以上の温度で熱風ドライ
ヤ,サクシヨンドラムドライヤ,ヤンキードライヤ等の
ドライヤやフラツトカレンダーロール,エンボスロール
等のヒートロール等の熱処理装置を使用して熱処理する
ことにより製造することができる。
For the nonwoven fabric or solid cotton, the obtained fiber laminate is heated at a temperature not lower than the melting point of the polyester binder fiber, such as a hot air dryer, a suction drum dryer, a Yankee dryer or a heat roll such as a flat calender roll or an emboss roll. It can be manufactured by heat treatment using a heat treatment apparatus such as

(作用) 本発明の繊維積層物の構成成分であるポリエステル系
バインダ繊維は,セルロース系繊維に対して良好な接着
力を有するが,これはこのバインダ繊維が比較的極性の
高いポリエステル重合体から構成されるためである。ま
た,生分解性を有するのは,直鎖脂肪族成分又は直鎖脂
肪族エステル結合を有するためである。
(Action) The polyester binder fiber, which is a constituent component of the fiber laminate of the present invention, has a good adhesive strength to the cellulosic fiber. This is because the binder fiber is composed of a polyester polymer having a relatively high polarity. That is because Further, it is biodegradable because it has a linear aliphatic component or a linear aliphatic ester bond.

(実施例) 次に,実施例に基づいて本発明を具体的に説明する。
なお,実施例における各種特性値は次の方法により測定
したものである。
(Example) Next, the present invention will be specifically described based on examples.
The various characteristic values in the examples were measured by the following methods.

相対粘度:フエノールと四塩化エタンの等重量混合物
を溶媒とし,試料濃度0.5g/dl,温度20℃で測定した。
Relative viscosity: The relative viscosity was measured at a sample concentration of 0.5 g / dl and a temperature of 20 ° C. using an equal weight mixture of phenol and ethane tetrachloride as a solvent.

結晶融点:パーキンエルマ社製示差走査熱量計DSC−
2型を使用し,昇温速度20℃/分で測定した。
Crystal melting point: Perkin-Elma Differential Scanning Calorimeter DSC-
The measurement was performed at a heating rate of 20 ° C./min using a type-2.

DSCにより測定される降温結晶化ピークの高さ(b)
とDSCにより測定される降温結晶化ピークの半価幅
(a)との比(b/a):パーキンエルマ社製示差走査熱
量計DSC−2型を使用し,試料量10mg,昇温速度20℃/分
で測定試料の(融点+30)℃まで昇温後,降温速度20℃
/分で降温したときの降温結晶化ピークより求めた。第
1図はDSCにより測定される降温結晶化ピークを示す模
式図であり,縦軸は熱量(mcal/秒),横軸は温度
(℃)を示す。降温結晶化ピークの高さ(b)とは基線
に対する極大点の高さ(mcal/秒)であり,降温結晶化
ピークの半価幅(a)とは降温結晶化ピークの高さ
(b)の半分の高さでのピーク幅(℃)である。なお,
測定に際し,チヤート速度を20mm/分とした。
Temperature crystallization peak height measured by DSC (b)
Ratio (b / a) between the temperature and the half-width (a) of the crystallization peak measured by DSC using a DSC-2 type differential scanning calorimeter manufactured by PerkinElmer, using a sample amount of 10 mg and a heating rate of 20 After the temperature is raised to (melting point + 30) ° C at a rate of ° C / min, the temperature is lowered at 20 ° C
/ Min was determined from the temperature-reducing crystallization peak when the temperature was lowered. FIG. 1 is a schematic diagram showing a temperature-reducing crystallization peak measured by DSC, in which the vertical axis indicates calorific value (mcal / sec) and the horizontal axis indicates temperature (° C.). The height (b) of the cooling crystallization peak is the height (mcal / sec) of the maximum point with respect to the base line, and the half width (a) of the cooling crystallization peak is the height (b) of the cooling crystallization peak Is the peak width (° C.) at half the height. In addition,
In measurement, the chart speed was 20 mm / min.

強 力:不織布を幅25mmに裁断し,低速伸長型引張
試験機を使用して,試料長100mm,引張速度100mm/分で測
定した。
Strength: The nonwoven fabric was cut to a width of 25 mm, and measured using a low-speed extension type tensile tester at a sample length of 100 mm and a tensile speed of 100 mm / min.

剛軟度 :JIS L 1096 45度カンチレバ法に準じて測
定した。
Bending resistance: Measured according to the JIS L 1096 45 degree cantilever method.

風 合:10人のパネラによる官能試験を行い,次の
5段階で評価した。1:柔らかい,2:やや柔らかい,3:普
通,4:やや硬い,5:硬い 実施例1〜3 モル比が10/13のオクタデカン−1,18−ジカルボン酸/
1,14−ブタンジオール及び,オクタデカン−1,18−ジカ
ルボン酸1モルに対し3×10-4モルのテトラブチルチタ
ネートをエステル化,重縮合反応させ,相対粘度1.57,
結晶融点82℃,DSCにより測定される降温結晶化ピークの
高さ(b)とDSCにより測定される降温結晶化ピークの
半価幅(a)との比(b/a)0.88のポリエステル重合体
Aを得た。
Feeling: A sensory test was conducted using 10 panelists, and the evaluation was made according to the following five levels. 1: Soft, 2: Slightly soft, 3: Normal, 4: Slightly hard, 5: Hard Examples 1-3 Octadecane-1,18-dicarboxylic acid with a molar ratio of 10/13 /
Esterification and polycondensation of 3 × 10 -4 moles of tetrabutyl titanate with respect to 1 mole of 1,14-butanediol and 1 mole of octadecane-1,18-dicarboxylic acid gave a relative viscosity of 1.57,
Polyester polymer having a crystal melting point of 82 ° C. and a ratio (b / a) of 0.88 between the height (b) of the cooling crystallization peak measured by DSC and the half width (a) of the cooling crystallization peak measured by DSC A was obtained.

このポリエステル重合体Aのチツプと相対粘度1.38の
ポリエステルテレフタレートからなるポリエステル重合
体Bのチツプを減圧乾燥した後,通常の複合溶融紡糸装
置を使用して溶融し,ポリエステル重合体Aを鞘,ポリ
エステル重合体Bを芯,複合比(重量比)(A/B)を1/1
として紡糸孔数265の紡糸口金を通し紡糸温度270℃,総
吐出量347g/分で複合溶融紡出した。紡出繊維糸条を冷
却した後,引取速度1000m/分で引取って未延伸繊維糸条
を得た。得られた糸条を集束し10万デニールのトウにし
て延伸倍率3.1,延伸温度60℃で延伸し,押込み式クリン
パを使用して捲縮を付与した後,長さ51mmに切断して単
糸繊度4デニールの芯鞘型複合ポリエステル系バインダ
繊維を得た。
The chip of the polyester polymer A and the chip of the polyester polymer B composed of polyester terephthalate having a relative viscosity of 1.38 are dried under reduced pressure, and then melted using an ordinary composite melt-spinning apparatus. Combined B core, composite ratio (weight ratio) (A / B) 1/1
The composite melt was spun through a spinneret with 265 spinning holes at a spinning temperature of 270 ° C and a total discharge rate of 347 g / min. After cooling the spun fiber yarn, it was drawn at a take-up speed of 1000 m / min to obtain an undrawn fiber yarn. The obtained yarn is bundled, drawn into a 100,000-denier tow, drawn at a draw ratio of 3.1, at a drawing temperature of 60 ° C, crimped using an indentation type crimper, and cut into a length of 51 mm. A core-sheath composite polyester binder fiber having a fineness of 4 denier was obtained.

次いで,このバインダ繊維と単糸繊度2デニール,長
さ51mmのレーヨン繊維とを第2表に示した割合で混綿し
た後,カードに通して目付け40g/m2のウエブとし,温度
140℃の回転乾燥機を使用し1分間熱処理して不織布を
作製した。
Next, the binder fiber and the rayon fiber having a single yarn fineness of 2 denier and a length of 51 mm were mixed at the ratio shown in Table 2 and passed through a card to give a web having a basis weight of 40 g / m 2.
Using a rotary dryer at 140 ° C., heat treatment was performed for 1 minute to produce a nonwoven fabric.

得られた不織布の特性値を第2表に示す。 Table 2 shows the characteristic values of the obtained nonwoven fabric.

比較例1及び2 バインダ繊維として市販のポリエチレン重合体を鞘,
ポリプロピレン重合体を芯とした単糸繊度3デニール,
長さ51mmの芯鞘型複合ポリオレフイン系バインダ繊維を
使用した以外は,実施例1と同様にして不織布を作製し
た(比較例1)。また,低融点芳香族ポリエステル共重
合体を鞘,ポリエチレンテレフタレート重合体を芯とし
た単糸繊度4デニール,長さ51mmの芯鞘型複合ポリエス
テル型バインダ繊維を使用した以外は,実施例1と同様
にして不織布を作製した。(比較例2)。
Comparative Examples 1 and 2 A commercially available polyethylene polymer was sheathed as a binder fiber.
Single fiber fineness of 3 denier with polypropylene polymer as the core,
A nonwoven fabric was produced in the same manner as in Example 1 except that a core-sheath composite polyolefin-based binder fiber having a length of 51 mm was used (Comparative Example 1). The same procedure as in Example 1 was carried out except that a core-sheath type composite polyester type binder fiber having a denier of 4 denier and a length of 51 mm with a sheath made of a low melting point aromatic polyester copolymer and a polyethylene terephthalate polymer as a core was used. To produce a nonwoven fabric. (Comparative Example 2).

得られた不織布の特性値を第2表に示す。 Table 2 shows the characteristic values of the obtained nonwoven fabric.

実施例4〜8 第3表に示したような種々のジカルボン酸成分とグリ
コール成分とを組み合わせてポリエステル重合体を得
た。
Examples 4 to 8 Polyester polymers were obtained by combining various dicarboxylic acid components and glycol components as shown in Table 3.

バインダ繊維を構成するポリエステル重合体としてこ
の重合体を使用し,かつバインダ繊維の混合比(重量
比)を全繊維の重量に対し全て40重量%とした以外は,
実施例1と同様にして不織布を作製した。
Except that this polymer was used as the polyester polymer constituting the binder fiber, and that the mixing ratio (weight ratio) of the binder fiber was all 40% by weight based on the weight of all the fibers.
A nonwoven fabric was produced in the same manner as in Example 1.

得られた不織布の特性値を第3表に示す。 Table 3 shows the characteristic values of the obtained nonwoven fabric.

比較実施例1 1,4−ブタンジオールと1,9−ノナンジオールのモル比
を20/80とした以外は,実施例7と同様にして,相対粘
度1.71,結晶融点72℃,DSCにより測定される降温結晶化
ピークの高さ(b)とDSCにより測定される降温結晶化
ピークの半価幅(a)との比(b/a)0.15のポリエステ
ル重合体を得た。
Comparative Example 1 Relative viscosity 1.71, crystal melting point 72 ° C, measured by DSC in the same manner as in Example 7 except that the molar ratio of 1,4-butanediol and 1,9-nonanediol was changed to 20/80. A polyester polymer having a ratio (b / a) of 0.15 between the height (b) of the cooling crystallization peak and the half width (a) of the cooling crystallization peak measured by DSC was obtained.

バインダ繊維を構成するポリエステル重合体としてこ
の重合体を使用し,延伸温度を55℃とした以外は,実施
例7と同様にして不織布を作製した。
A non-woven fabric was produced in the same manner as in Example 7, except that this polymer was used as a polyester polymer constituting the binder fiber and the stretching temperature was 55 ° C.

得られた不織布は,バインダ繊維を構成するポリエス
テル重合体の耐熱性が低いため繊維間に著しい融着が観
察され,手触りの硬いものであった。
In the obtained nonwoven fabric, remarkable fusion was observed between the fibers due to the low heat resistance of the polyester polymer constituting the binder fiber, and the hand was hard to the touch.

実施例9 実施例1の相対粘度1.57,結晶融点82℃,DSCにより測
定される降温結晶化ピークの高さ(b)とDSCにより測
定される降温結晶化ピークの半価幅(a)との比(b/
a)0.88のポリエステル重合体Aのチツプを減圧乾燥し
た後,通常の溶融紡糸装置を使用して溶融紡出して未延
伸繊維糸条を得,これらを集束し10万デニールのトウに
して延伸倍率3.1,延伸温度℃で延伸し,押込み式クリン
パを使用して捲縮を付与した後,長さ10mmに切断して単
糸繊度4デニールの単成分ポリエステル系バインダ繊維
を得た。
Example 9 The relative viscosity of Example 1 was 1.57, the crystal melting point was 82 ° C., and the height (b) of the cooling crystallization peak measured by DSC and the half width (a) of the cooling crystallization peak measured by DSC were: Ratio (b /
a) After drying the polyester polymer A chip of 0.88 under reduced pressure, it is melt-spun using an ordinary melt-spinning apparatus to obtain undrawn fiber yarns, and these are bundled and made into a 100,000-denier tow to obtain a draw ratio. 3.1 The film was drawn at a drawing temperature of ° C., crimped by using an indentation type crimper, and then cut to a length of 10 mm to obtain a single-component polyester binder fiber having a single-filament fineness of 4 denier.

次いで,このバインダ繊維と木材パルプとを混合比
(重量比)50/50で湿式抄紙機に通して目付け20g/m2
混抄し,温度140℃の回転乾燥機を使用し1分間熱処理
して不織布を作製した。得られた不織布の強力は1730g
であった。
Next, the binder fiber and the wood pulp are passed through a wet paper machine at a mixing ratio (weight ratio) of 50/50, mixed at a basis weight of 20 g / m 2 , and heat-treated for 1 minute using a rotary dryer at a temperature of 140 ° C. A non-woven fabric was produced. The strength of the obtained nonwoven fabric is 1730 g
Met.

この不織布を日陰の樹木の脇に10cmの深さで埋め2個
月経過後に掘り出して土を落とし乾燥した。この不織布
の強力は210g,強力保持率は約12%であった。
This non-woven fabric was buried beside a shaded tree at a depth of 10 cm and dug out two months later to remove soil and dry. The strength of this nonwoven fabric was 210 g, and the strength retention was about 12%.

比較例3及び4 バインダ繊維として比較例1のポリオレフイン系バイ
ンダ繊維を使用した以外は,実施例9と同様にして不織
布を作製し,また,バインダ繊維として比較例2のポリ
エステル系バインダ繊維を使用した以外は,実施例9と
同様にして各々不織布を作製し,同様の測定を実施し
た。
Comparative Examples 3 and 4 A nonwoven fabric was prepared in the same manner as in Example 9 except that the polyolefin-based binder fiber of Comparative Example 1 was used as the binder fiber, and the polyester-based binder fiber of Comparative Example 2 was used as the binder fiber. Except for the above, nonwoven fabrics were prepared in the same manner as in Example 9, and the same measurement was performed.

これらの不織布の強力保持率は,各々約57%,52%で
あった。
The strength retention of these nonwoven fabrics was about 57% and 52%, respectively.

(発明の効果) 本発明によれば,セルロース系繊維と良好に接着し,
高接着強力,柔らかな風合及び優れた吸水性を有する不
織布又は固綿を得ることができるセルロース系繊維とポ
リエステル系バインダ繊維とからなる繊維積層を得るこ
とができる。そして,特に直鎖脂肪族エステル結合を多
く含有する単成分ポリエステル系バインダ繊維を使用す
ると,自然界に置かれたとき生分解をするため,環境を
汚したりすることがない。
(Effect of the Invention) According to the present invention, it adheres well to cellulosic fibers,
It is possible to obtain a fiber laminate comprising a cellulose-based fiber and a polyester-based binder fiber from which a nonwoven fabric or solid cotton having high adhesive strength, soft feel and excellent water absorption can be obtained. In particular, when a single-component polyester-based binder fiber containing a large number of straight-chain aliphatic ester bonds is used, it is biodegraded when placed in the natural world, so that the environment is not polluted.

【図面の簡単な説明】[Brief description of the drawings]

第1図は,DSCにより測定される降温結晶化ピークを示す
模式図で,図において,(a)は降温結晶化ピークの半
価幅(℃),(b)は極大降温結晶化ピークの高さ(mc
al/秒)である。
FIG. 1 is a schematic diagram showing a cooling crystallization peak measured by DSC, in which (a) is the half-value width (° C.) of the cooling crystallization peak, and (b) is the height of the maximum cooling crystallization peak. Sa (mc
al / sec).

Claims (3)

(57)【特許請求の範囲】(57) [Claims] 【請求項1】セルロース系繊維と,炭素数4以上の直鎖
脂肪族成分を含み,結晶融点が60℃以上220℃以下で,
かつDSCにより測定される降温結晶化ピークの高さ
(b)とDSCにより測定される降温結晶化ピークの半価
幅(a)との比(b/a)が0.2以上である低融点結晶性ポ
リエステル系バインダ繊維とからなる繊維積層物。
Claims: 1. A cellulose fiber containing a linear aliphatic component having 4 or more carbon atoms, and having a crystal melting point of not less than 60 ° C and not more than 220 ° C.
Low melting point crystallinity in which the ratio (b / a) of the height (b) of the cooling crystallization peak measured by DSC to the half width (a) of the cooling crystallization peak measured by DSC is 0.2 or more A fiber laminate comprising a polyester binder fiber.
【請求項2】ポリエステル系バインダ繊維が,直鎖脂肪
族エステル結合を含有するポリエステル重合体からなる
請求項1記載の繊維積層物。
2. The fiber laminate according to claim 1, wherein the polyester-based binder fiber comprises a polyester polymer containing a linear aliphatic ester bond.
【請求項3】ポリエステル系バインダ繊維が,炭素数14
以上の直鎖脂肪族ジカルボン酸成分と,炭素数4以上の
直鎖アルキレングリコール成分とから構成されるポリエ
ステル重合体からなる請求項1記載の繊維積層物。
3. The polyester binder fiber has 14 carbon atoms.
2. The fiber laminate according to claim 1, comprising a polyester polymer comprising the above linear aliphatic dicarboxylic acid component and a linear alkylene glycol component having 4 or more carbon atoms.
JP28080689A 1989-10-26 1989-10-26 Fiber laminate Expired - Fee Related JP2795487B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP28080689A JP2795487B2 (en) 1989-10-26 1989-10-26 Fiber laminate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP28080689A JP2795487B2 (en) 1989-10-26 1989-10-26 Fiber laminate

Publications (2)

Publication Number Publication Date
JPH03146754A JPH03146754A (en) 1991-06-21
JP2795487B2 true JP2795487B2 (en) 1998-09-10

Family

ID=17630235

Family Applications (1)

Application Number Title Priority Date Filing Date
JP28080689A Expired - Fee Related JP2795487B2 (en) 1989-10-26 1989-10-26 Fiber laminate

Country Status (1)

Country Link
JP (1) JP2795487B2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4119455C1 (en) * 1991-06-13 1992-09-17 Fa. Carl Freudenberg, 6940 Weinheim, De
US5958492A (en) * 1995-10-13 1999-09-28 Kraft Foods, Inc. Figure cutter for food slices
JP2009013522A (en) * 2007-07-03 2009-01-22 Nippon Ester Co Ltd Polyester filament nonwoven fabric
JP4988484B2 (en) * 2007-09-06 2012-08-01 日本エステル株式会社 Short fiber nonwoven fabric

Also Published As

Publication number Publication date
JPH03146754A (en) 1991-06-21

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