JP2001172828A - Regenerated polyester-based thermoadhesive conjugate fiber - Google Patents
Regenerated polyester-based thermoadhesive conjugate fiberInfo
- Publication number
- JP2001172828A JP2001172828A JP35462999A JP35462999A JP2001172828A JP 2001172828 A JP2001172828 A JP 2001172828A JP 35462999 A JP35462999 A JP 35462999A JP 35462999 A JP35462999 A JP 35462999A JP 2001172828 A JP2001172828 A JP 2001172828A
- Authority
- JP
- Japan
- Prior art keywords
- polyester
- sheath
- core
- conjugate fiber
- fiber
- 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
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、再生ポリエステル
系熱接着性複合繊維に関するものであり、さらに詳しく
は、再生ポリエステルを含有するポリエステルを原料と
して、家具、ベッド等に用いられる不織布やクッション
材用素材として好適な再生ポリエステル系熱接着性複合
繊維に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recycled polyester-based heat-adhesive conjugate fiber, and more particularly, to a non-woven fabric or cushion material used for furniture, beds, etc., using polyester containing recycled polyester as a raw material. The present invention relates to a recycled polyester-based heat-adhesive conjugate fiber suitable as a material.
【０００２】[0002]
【従来の技術】ポリエチレンテレフタレート（ＰＥＴ）
を主成分とするポリエステルは、力学的特性、耐熱性、
成形性等に優れており、繊維、フィルム、成形品等の分
野において極めて広い用途を有している。2. Description of the Related Art Polyethylene terephthalate (PET)
The main component of polyester is mechanical properties, heat resistance,
It is excellent in moldability and the like, and has an extremely wide application in the fields of fibers, films, molded products and the like.
【０００３】しかしながら、これらポリエステル製品
は、使用後の処分において焼却すると高熱を発し、通常
の焼却炉では損傷しやすい等の問題が生じる。また、焼
却せずに廃棄する場合には、分解しないため永久的に屑
として残存する等、環境保護の観点からも大きな社会問
題となっている。[0003] However, these polyester products generate high heat when incinerated in disposal after use, and cause a problem that they are easily damaged in a normal incinerator. In addition, when disposed of without being incinerated, it does not decompose and remains permanently as waste, which is a major social problem from the viewpoint of environmental protection.
【０００４】そこで、資源の再利用、環境保護の視点か
ら廃棄されたポリエステル製品を回収し、再利用するこ
とが必要であるが、この原料は最近のＰＥＴフィルムや
ＰＥＴボトルの発展により、かなりの資源量が期待でき
るまでに成長し、低価格化が進んでいる。それととも
に、ＰＥＴボトルを再溶融・ペレット化し、再び、繊維
やフィルム・成型品にするという再利用の試みが始めら
れている。Therefore, it is necessary to collect and recycle discarded polyester products from the viewpoint of resource recycling and environmental protection. However, this raw material has been considerably developed due to recent development of PET films and PET bottles. The resource has grown to the point where it can be expected, and prices have been reduced. At the same time, attempts have been made to reuse PET bottles by re-melting and pelletizing them to produce fibers, films and molded products again.
【０００５】また、近年、繊維分野では、ＰＥＴを代表
とするポリエステル繊維の役割が大きくなり、コスト・
力学特性等の視点から熱接着複合繊維を用いて、繊維集
合体あるいは繊維製品、例えば家具、ベッド等用の不織
布やクッション材を製造する要求が大きくなり、再生ポ
リエステルを使用した熱接着性複合繊維が強く望まれて
いる。In recent years, in the field of fibers, the role of polyester fibers represented by PET has been increasing, and
The demand for manufacturing fiber aggregates or fiber products, such as non-woven fabrics and cushioning materials for furniture, beds, etc. using heat-bonded conjugate fibers from the viewpoint of mechanical properties, etc., has increased, and heat-bonded conjugate fibers using recycled polyester Is strongly desired.
【０００６】しかし、再生ポリエステルを製糸して繊維
化する際、再生ポリエステル中に含有される添加物、異
物等の不純物により、製糸の際に通常行われる高速紡糸
においては糸切れが多発して操業性が著しく低下する等
の理由により、回収されたポリエステルから汎用性のあ
る繊維を高速で製糸することは困難であった。However, when the recycled polyester is made into fibers by spinning, due to impurities such as additives and foreign substances contained in the recycled polyester, yarn breakage occurs frequently in high-speed spinning usually performed in spinning. It has been difficult to spin versatile fibers from the recovered polyester at high speeds, for example, because the properties are significantly reduced.
【０００７】[0007]
【発明が解決しようとする課題】本発明は、上記の問題
を解決し、ポリエステル成型品を回収、再溶融して高速
紡糸で得ることができ、家具、ベッド等に用いる不織布
やクッション材用素材として好適な再生ポリエステル系
熱接着性複合繊維を提供することを技術的な課題とする
ものである。DISCLOSURE OF THE INVENTION The present invention solves the above-mentioned problems, and a polyester molded product can be recovered and re-melted to be obtained by high-speed spinning. It is an object of the present invention to provide a regenerated polyester-based heat-adhesive conjugate fiber suitable as the above.
【０００８】[0008]
【課題を解決するための手段】本発明者らは、上記の課
題を解決するために鋭意検討を重ねた結果、再生ポリエ
ステルを主成分とするポリエステルを芯成分、芯成分よ
りも融点が40℃以上低いポリエステルを鞘成分とした芯
鞘型複合繊維は、リサイクルの要求にも応え、製糸性も
よく、家具及びベッド等に用いる不織布やクッション材
用素材として好適なことを見出して本発明に到達した。Means for Solving the Problems The inventors of the present invention have conducted intensive studies to solve the above-mentioned problems, and as a result, a polyester containing recycled polyester as a main component has a melting point of 40 ° C. as compared with the core component. The core-sheath type composite fiber having a low polyester content as a sheath component meets the demand for recycling, has a good spinning property, and finds that it is suitable as a material for a nonwoven fabric or cushion material used for furniture, beds, etc., and has reached the present invention. did.
【０００９】すなわち、本発明は、再生ポリエステルを
主成分とするポリエステルを芯成分、芯成分よりも４０
℃以上融点の低いポリエステルを鞘成分とし、芯鞘重量
比が芯／鞘＝２／８〜８／２であることを特徴とする再
生ポリエステル系熱接着性複合繊維を要旨とするもので
ある。That is, according to the present invention, a polyester containing recycled polyester as a main component is used as a core component, and the polyester is 40% less than the core component.
A regenerated polyester-based heat-adhesive conjugate fiber characterized in that a polyester having a melting point of at least 0 ° C. and a low melting point is used as a sheath component, and a core / sheath weight ratio is 2/8 to 8/2.
【００１０】[0010]
【発明の実施の形態】以下、本発明について詳細に説明
する。本発明で芯成分の主成分として用いる再生ポリエ
ステルとしては、ＰＥＴ、ポリブチレンテレフタレート
等の融点が 200℃以上のものが好ましく、その他に共重
合成分として、例えば、イソフタル酸、アジピン酸、セ
バシン酸、フタル酸、2,6-ナフタレンカルボン酸、5-ナ
トリウムスルホイソフタル酸等のジカルボン酸成分、プ
ロピレングリコール、ジエチレングリコール、ネオペン
チルグリコール、ポリエチレングリコール、1,4-シクロ
ヘキサンジメタノール、5-ナトリウムスルホレゾルシン
等のジオール類、トリメリット酸、ピロメリット酸等の
多官能カルボン酸成分、p-オキシ安息香酸等の二官能性
モノカルボン酸、ε−カプロラクトン、δ−バレロラク
トン等の脂肪族ラクトン類等を少量共重合したものも用
いることができる。また、その特性を損なわない範囲で
あれば少量の艶消材、着色剤、難燃材、帯電防止剤、滑
材等の添加物を含有してもよい。芯部に用いるポリエス
テルは再生ポリエステル 100％のものでもよいし、再生
ポリエステルが50％以上であれば、他のポリエステルを
混合したものでもよい。BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail. As the recycled polyester used as the main component of the core component in the present invention, those having a melting point of 200 ° C. or more such as PET and polybutylene terephthalate are preferable, and as other copolymerization components, for example, isophthalic acid, adipic acid, sebacic acid, Dicarboxylic acid components such as phthalic acid, 2,6-naphthalenecarboxylic acid, and 5-sodium sulfoisophthalic acid; propylene glycol, diethylene glycol, neopentyl glycol, polyethylene glycol, 1,4-cyclohexanedimethanol, and 5-sodium sulforesorcin. Diols, polyfunctional carboxylic acid components such as trimellitic acid and pyromellitic acid, difunctional monocarboxylic acids such as p-oxybenzoic acid, and aliphatic lactones such as ε-caprolactone and δ-valerolactone are used in small amounts. Polymerized ones can also be used. Further, a small amount of additives such as a matting material, a coloring agent, a flame retardant, an antistatic agent and a lubricant may be contained as long as the properties are not impaired. The polyester used for the core may be 100% recycled polyester, or may be a mixture of other polyesters if the recycled polyester is 50% or more.
【００１１】また、鞘成分のポリエステルとしては、芯
成分の融点よりも40℃以上低い融点を有するポリエステ
ルを用いることが必要である。鞘成分としてそれよりも
高い融点のポリエステルを用いると、本発明の複合繊維
を用いて不織布、クッション材等を製造するときの熱処
理において芯部が溶け出してしまい、不織布、クッショ
ン材等の力学的特性が低下する。このような融点の低い
ポリエステルとしては、例えば、ＰＥＴにイソフタル酸
を５〜50モル％共重合したものや、テレフタル酸／エチ
レングリコール／1,4-ブタンジオール／ε−カプロラク
トン等を共重合成分とするポリエステル等が挙げられ
る。As the polyester of the sheath component, it is necessary to use a polyester having a melting point lower by at least 40 ° C. than the melting point of the core component. If a polyester having a higher melting point is used as the sheath component, the core will be melted out during the heat treatment when manufacturing the nonwoven fabric, the cushioning material, etc. using the composite fiber of the present invention, and the mechanical properties of the nonwoven fabric, the cushioning material, etc. The characteristics deteriorate. Examples of such a polyester having a low melting point include those obtained by copolymerizing PET with 5 to 50 mol% of terephthalic acid / ethylene glycol / 1,4-butanediol / ε-caprolactone. And the like.
【００１２】本発明の複合繊維において、芯成分と鞘成
分の重量比は芯／鞘＝８／２〜２／８であることが必要
であり、好ましくは芯／鞘＝５／５〜２／８である。重
量比が８／２よりも鞘成分が少ないと、繊維製品、例え
ばクッション材を熱成型する際に繊維の交絡部にうまく
溶融ポリマーが流れて結合するということができなくな
り、熱融着一体化される繊維の交絡部数が減ってクッシ
ョン材の反撥性が低下するだけでなく、鞘部の減少とと
もに製糸性も悪化する。また、重量比が２／８よりも鞘
成分が多いと、繊維集合体の加熱処理の際に複合繊維の
大部分が溶けだしてしまい、極めて風合いの硬いものと
なるだけでなく、再生ポリエステルの比率が低くなり、
生産効率・省エネルギーのニーズに十分応えることがで
きない。In the conjugate fiber of the present invention, the weight ratio of the core component and the sheath component must be core / sheath = 8/2 to 2/8, preferably core / sheath = 5/5 to 2 /. 8 When the weight ratio of the sheath component is less than 8/2, when the fiber product, for example, the cushion material is thermoformed, the molten polymer cannot flow and bond to the entangled portion of the fibers, and the heat fusion and integration can be performed. Not only does the number of entangled portions of the fibers to be reduced decrease the resilience of the cushioning material, but also decreases the sheath and the yarn-making properties. On the other hand, if the weight ratio is more than 2/8, the majority of the conjugate fiber is melted during the heat treatment of the fiber assembly, resulting in not only a very hard texture, but also a ratio of recycled polyester. Is lower,
It cannot fully meet the needs of production efficiency and energy saving.
【００１３】前述したように、本発明の再生ポリエステ
ル系熱接着性複合繊維は、鞘成分として曳糸性良好なポ
リエステルを用いるので、芯成分として再生ポリエステ
ルを用いても、例えば1000m/分以上の高速で紡糸しても
糸切れが生じ難くて高速紡糸が可能となる。As described above, since the recycled polyester-based heat-adhesive conjugate fiber of the present invention uses a polyester having good spinnability as the sheath component, even if the recycled polyester is used as the core component, for example, 1000 m / min or more. Even when spinning at high speed, yarn breakage is unlikely to occur and high-speed spinning becomes possible.
【００１４】また、本発明の再生ポリエステル系熱接着
性複合繊維は、適度な熱接着性を有しているので、家
具、ベッド等に用いる不織布やクッション材用素材とし
て好適なものである。Further, the recycled polyester-based heat-adhesive conjugate fiber of the present invention has a suitable heat-adhesive property, and thus is suitable as a material for a nonwoven fabric or a cushion material used for furniture, beds and the like.
【００１５】[0015]
【実施例】次に、本発明を実施例により具体的に説明す
る。なお、実施例における各物性値の測定と評価は、次
の方法で行った。 (a) 融点（軟化点） パーキンエルマー社製の示差走査熱量計DSC-7 型を使用
し、昇温速度20℃／分で測定した。明確な軟化点を持た
ない様なＩＰＡ共重合ポリエステルについては軟化点を
測定した。 (b) クッション材の圧縮弾力性 平板状に整形された密度0.035g/cm3、厚み５cmのクッシ
ョン材を断面積20cm2の平坦な下面を有する円柱ロッド
で１cm圧縮してその応力（初期応力）を測定し、 3.5kg
以上を合格とした。 (c) 紡糸操業性評価 紡糸錘一錘について、紡糸時の糸切れ回数で評価し、１
回／３時間以下を○、それ以上を×とし、○を合格とし
た。Next, the present invention will be described in detail with reference to examples. The measurement and evaluation of each physical property value in the examples were performed by the following methods. (a) Melting Point (Softening Point) The melting point (softening point) was measured at a heating rate of 20 ° C./min using a DSC-7 type differential scanning calorimeter manufactured by PerkinElmer. Softening points were measured for IPA copolymerized polyesters having no clear softening point. (b) Compressive elasticity of cushioning material A cushioning material having a flat shape and a density of 0.035 g / cm 3 and a thickness of 5 cm is compressed 1 cm with a cylindrical rod having a flat lower surface with a cross-sectional area of 20 cm 2 and its stress (initial stress) 3.5)
The above was passed. (c) Evaluation of spinning operability One spinning spindle was evaluated by the number of yarn breaks during spinning.
回: less than or equal to 3 hours, x: more than 3 hours, and ○: acceptable.
【００１６】実施例１ 芯鞘複合繊維の芯部を構成する再生ポリエステルとし
て、内海企画社製の再生ＰＥＴ（〔η〕＝0.71、融点 2
56℃）を用い、窒素流通下 100℃で５時間予熱乾燥を行
った後、 130℃で16時間、本乾燥を行った。Example 1 A recycled PET ([η] = 0.71, melting point 2) manufactured by Utsumi Planning Co., Ltd. was used as a recycled polyester constituting the core of the core-sheath composite fiber.
After preheating drying at 100 ° C. for 5 hours under a nitrogen flow, main drying was carried out at 130 ° C. for 16 hours.
【００１７】また、鞘部を構成する共重合ポリエステル
を次のようにして製造した。テレフタル酸とエチレング
リコールとのエステル化反応で得られたテレフタル酸成
分とエチレングリコール成分とのモル比が1:1.13のＰＥ
Ｔオリゴマーに、ε−カプロラクトンを酸成分に対して
15モル％、及び1,4-ブタンジオールをジオール成分に対
して50モル％の割合で添加し、温度 260℃、圧力1hPaで
３時間の重縮合反応を行い、共重合ポリエステルを得
た。Further, a copolyester constituting the sheath was produced as follows. PE having a molar ratio of terephthalic acid component to ethylene glycol component of 1: 1.13 obtained by esterification reaction of terephthalic acid and ethylene glycol
Ε-caprolactone is added to the T oligomer to the acid component.
15 mol% and 1,4-butanediol were added at a ratio of 50 mol% to the diol component, and a polycondensation reaction was performed at a temperature of 260 ° C. and a pressure of 1 hPa for 3 hours to obtain a copolymerized polyester.
【００１８】このようにして得られた再生ポリエステル
と共重合ポリエステルを用い、各々のペレットを芯鞘型
複合溶融装置に供給し、芯／鞘＝５／５の芯鞘重量比、
紡糸温度 300℃で紡出し、1000m/分で捲き取った。次い
で、この未延伸糸を30m/分で引き出し、定法により70℃
の温浴バスを用いて熱処理延伸を行い、100m／分で捲き
取った。Using the regenerated polyester and the copolymerized polyester thus obtained, each pellet is supplied to a core-sheath type composite melting apparatus, and a core / sheath weight ratio of core / sheath = 5/5,
It was spun at a spinning temperature of 300 ° C. and wound up at 1000 m / min. Next, the undrawn yarn is pulled out at a rate of 30 m / min.
The film was stretched by heat treatment using a warm bath bath of No. 1 and wound up at 100 m / min.
【００１９】さらに、この繊維を64mmに切断した後、油
剤を付与し、単糸繊度が 6.5デシテックスの短繊維を得
た。この複合短繊維40重量％と、常法により得られた単
糸繊度 6.5デシテックス、繊維長64mmの中空断面ＰＥＴ
短繊維60重量％とをカードにより混綿してウエッブを得
た。このウエッブを重ね、厚み５cm、密度0.035g/cm3に
なるように平板型の型に入れて 200℃で10分間熱処理
し、平板型のクッション材を得た。Further, after the fiber was cut into 64 mm, an oil agent was applied to obtain a short fiber having a single yarn fineness of 6.5 dtex. 40% by weight of this composite short fiber and a hollow fiber PET with a fiber fineness of 6.5 dtex and a fiber length of 64 mm obtained by a conventional method.
60% by weight of short fibers were mixed with a card to obtain a web. The webs were stacked, placed in a flat mold so as to have a thickness of 5 cm and a density of 0.035 g / cm 3, and heat-treated at 200 ° C. for 10 minutes to obtain a flat cushion material.
【００２０】実施例２〜３ 芯鞘比を表１のように変更した以外は、実施例１と同様
にして複合繊維とクッション材を製造した。Examples 2 to 3 Composite fibers and cushioning materials were produced in the same manner as in Example 1 except that the core / sheath ratio was changed as shown in Table 1.
【００２１】実施例４ ε−カプロラクトンの添加量を酸成分に対して５モル％
とし、平板型での熱処理温度を 230℃にした以外は、実
施例１と同様にして複合繊維とクッション材を製造し
た。Example 4 The amount of ε-caprolactone added was 5 mol% based on the acid component.
A composite fiber and a cushion material were produced in the same manner as in Example 1 except that the heat treatment temperature in the flat plate type was 230 ° C.
【００２２】実施例５ 鞘部を構成するポリエステルとして、テレフタル酸／イ
ソフタル酸のモル比が60／40の酸成分とエチレングリコ
ールとからなる〔η〕＝0.70、軟化点 110℃のポリエス
テルを用い、熱処理温度を 160℃とした以外は、実施例
１と同様に行った。Example 5 As the polyester constituting the sheath portion, a polyester having an acid component having a molar ratio of terephthalic acid / isophthalic acid of 60/40 and ethylene glycol [η] = 0.70 and a softening point of 110 ° C. was used. The operation was performed in the same manner as in Example 1 except that the heat treatment temperature was changed to 160 ° C.
【００２３】比較例１ ε−カプロラクトンの添加量を酸成分に対して１モル％
とした以外は、実施例１と同様にして複合繊維を製造し
た。しかし、クッション材を製造するときの熱処理温度
を高温にする必要があり、芯部が溶けだし、クッション
材を製造することが不可能であった。Comparative Example 1 The amount of ε-caprolactone added was 1 mol% based on the acid component.
A conjugate fiber was manufactured in the same manner as in Example 1 except that the above-mentioned was used. However, the heat treatment temperature at the time of manufacturing the cushion material needs to be high, and the core portion has melted, making it impossible to manufacture the cushion material.
【００２４】比較例２ 芯鞘複合比を表１のように変更した以外は実施例１と同
様にして複合繊維とクッション材を製造した。しかし、
鞘部が少ないので繊維の交絡部にうまく溶融ポリマーが
流れて結合することができず、熱融着一体化された繊維
の交絡部数が減ってクッション材を構成する繊維集合体
の反撥性が低下した。Comparative Example 2 A composite fiber and a cushion material were produced in the same manner as in Example 1 except that the core-sheath composite ratio was changed as shown in Table 1. But,
Since the number of sheaths is small, the molten polymer does not flow well into the entangled portions of the fibers and cannot be bonded.The number of entangled portions of the heat-sealed fibers is reduced, and the resilience of the fiber aggregate constituting the cushioning material is reduced. did.
【００２５】比較例３ 芯鞘複合比を表１のように変更した以外は実施例１と同
様にして複合繊維を製造した。しかし、鞘部が少なすぎ
るために製糸性が悪く、安定して連続紡糸することが不
可能であった。Comparative Example 3 A composite fiber was produced in the same manner as in Example 1 except that the core / sheath composite ratio was changed as shown in Table 1. However, since the sheath portion was too small, the spinnability was poor, and it was impossible to stably perform continuous spinning.
【００２６】比較例４ 芯鞘複合比を表１のように変更した以外は実施例１と同
様にして複合繊維とクッション材を製造した。しかし、
鞘部が多いので繊維の交絡部に溶融ポリマーが流れす
ぎ、繊維集合体が強く結合しすぎて、クッション材を構
成する繊維集合体の反撥性が低下した。実施例１〜５と
比較例１〜４の紡糸操業性とクッション材の評価結果を
併せて表１に示す。Comparative Example 4 A composite fiber and a cushion material were produced in the same manner as in Example 1 except that the core-sheath composite ratio was changed as shown in Table 1. But,
Since there were many sheath portions, the molten polymer flowed too much into the entangled portions of the fibers, and the fiber aggregates were too strongly bonded, and the resilience of the fiber aggregates constituting the cushion material was reduced. Table 1 also shows the spinning operability and the evaluation results of the cushioning materials of Examples 1 to 5 and Comparative Examples 1 to 4.
【００２７】[0027]
【表１】 [Table 1]
【００２８】[0028]
【発明の効果】本発明の再生ポリエステル系熱接着性複
合繊維は、ポリエステル成型品を回収、再溶融して高速
紡糸で得ることができ、家具、ベッド等に用いる不織布
やクッション材用素材として好適なものである。そし
て、本発明の再生ポリエステル系熱接着性複合繊維から
製造されたクッション材は、クッション性に優れ、廃棄
されたポリエステル製品の回収再利用する観点から、そ
の資源の再利用と環境保護の効果は大きい。Industrial Applicability The recycled polyester-based heat-adhesive conjugate fiber of the present invention can be obtained by collecting and remelting a polyester molded product and spinning at high speed, and is suitable as a material for a nonwoven fabric or a cushion material used for furniture, beds and the like. It is something. The cushioning material produced from the recycled polyester-based heat-adhesive conjugate fiber of the present invention has excellent cushioning properties, and from the viewpoint of recovering and reusing discarded polyester products, the effects of resource reuse and environmental protection are: large.
Claims (1)
ステルを芯成分、芯成分よりも４０℃以上融点の低いポ
リエステルを鞘成分とし、芯鞘重量比が芯／鞘＝２／８
〜８／２であることを特徴とする再生ポリエステル系熱
接着性複合繊維。1. A polyester mainly composed of recycled polyester as a core component, a polyester having a melting point of 40 ° C. or higher than the core component as a sheath component, and a core / sheath weight ratio of core / sheath = 2/8.
A regenerated polyester-based heat-adhesive conjugate fiber, characterized in that it is 8 to 2/2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35462999A JP2001172828A (en) | 1999-12-14 | 1999-12-14 | Regenerated polyester-based thermoadhesive conjugate fiber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35462999A JP2001172828A (en) | 1999-12-14 | 1999-12-14 | Regenerated polyester-based thermoadhesive conjugate fiber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2001172828A true JP2001172828A (en) | 2001-06-26 |
Family
ID=18438853
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP35462999A Pending JP2001172828A (en) | 1999-12-14 | 1999-12-14 | Regenerated polyester-based thermoadhesive conjugate fiber |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2001172828A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003014440A1 (en) * | 2001-08-02 | 2003-02-20 | Bba Nonwovens Simpsonville, Inc. | Spunbond nonwoven fabrics from reclaimed polymer and the manufacture thereof |
| EP3666360B1 (en) | 2016-03-17 | 2021-09-15 | Eurofilters N.V. | Bicomponent fibers comprising recycled polymers |
| US11525220B2 (en) | 2017-04-19 | 2022-12-13 | Unitika Ltd. | Process for producing fibrous board |
-
1999
- 1999-12-14 JP JP35462999A patent/JP2001172828A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003014440A1 (en) * | 2001-08-02 | 2003-02-20 | Bba Nonwovens Simpsonville, Inc. | Spunbond nonwoven fabrics from reclaimed polymer and the manufacture thereof |
| US7998384B2 (en) | 2001-08-02 | 2011-08-16 | Fiberweb Simpsonville, Inc. | Spunbond nonwoven fabrics from reclaimed polymer and the manufacture thereof |
| EP3666360B1 (en) | 2016-03-17 | 2021-09-15 | Eurofilters N.V. | Bicomponent fibers comprising recycled polymers |
| US11525220B2 (en) | 2017-04-19 | 2022-12-13 | Unitika Ltd. | Process for producing fibrous board |
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