JP4152729B2 - Interior material with excellent formaldehyde adsorption capacity - Google Patents

Interior material with excellent formaldehyde adsorption capacity Download PDF

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Publication number
JP4152729B2
JP4152729B2 JP2002343463A JP2002343463A JP4152729B2 JP 4152729 B2 JP4152729 B2 JP 4152729B2 JP 2002343463 A JP2002343463 A JP 2002343463A JP 2002343463 A JP2002343463 A JP 2002343463A JP 4152729 B2 JP4152729 B2 JP 4152729B2
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Prior art keywords
fiber
weight
polyester
interior
fibers
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JP2002343463A
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JP2004175208A (en
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稔博 片岡
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Kureha Corp
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Kureha Corp
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Description

【0001】
【発明の属する技術分野】
本発明はホルムアルデヒド吸着能に優れた内装材に係り、詳しくは車内や室内等に滞留し、人体に不快な臭いを与えたり、害を与えるホルムアルデヒドなどの化学物質を吸着除去できるポリエステル繊維を主材とする不織布内装材に関するものである。
【0002】
【従来の技術】
近年、化学物質による人体への影響が問題となり、例えば新築家屋などで頭痛やめまいを起こす、いわゆる「シックハウス症候群」や室内,車内等における悪臭の存在は快適な生活環境の脅威となっている。
【0003】
しかし、これらの問題の対応としては、揮発,拡散による自然減少を待って対処するのが現状であり、一部、物理的吸着や化学的吸着による除去が提案されているが、未だ十分な対応をし得るには至っていない。
【0004】
【発明が解決しようとする課題】
本発明者は上述の如き実状に対処し、その問題を解決するために室内や車内に揮発,滞留している悪臭、特にホルムアルデヒド等の化学物質を化学的に吸着する作用を有する繊維を用いて不織布を作成することを試みたが、その作成にあたり、ほかの機能、例えば繊維間接着や意匠性のために原着繊維等の吸着能を有しない繊維を添加せざるを得なくなり、そのために吸着性能を有する繊維の添加量が低下し、吸着能が低下するということが判明した。
【0005】
本発明はかかる事実にもとづき、内装材として好適に使用されるポリエステル製不織布に対しその解決を図るものであり、特にホルムアルデヒド吸着性能を有するポリエステル繊維に吸湿性ポリエステル繊維を特定量含むことにより、ほかの機能のため吸着能を有しない繊維を添加せざるを得ないとしても別段、吸着能を損なうことなく、車内や室内に滞留するホルムアルデヒドや、その他の化学物質や臭気を効果的に吸着除去することを見出し、かかる効果を奏するポリエステル繊維を主材とする不織布内装材を提供することを目的とするものである。
【0006】
【課題を解決するための手段】
即ち、上記目的に適合する本発明の特徴は、ホルムアルデヒド吸着能を有するポリエステル繊維が20〜85重量%で、親水性表面処理を施した吸湿性ポリエステル繊維を5〜65重量%の範囲で、かつ、熱融着性繊維を5〜30重量%の範囲で含有する繊維ウエブにニードルパンチ処理を施し、構成繊維を互いに絡合せしめてなる不織布内装材にある。
なお、ここで上記ホルムアルデヒド吸着能を有するポリエステル繊維としては、アセトアセチル基含有高分子物や含窒素化合物をコーティングしたポリエステル繊維であり、吸湿性ポリエステル繊維としては、繊維表面に親水性表面処理を施したポリエステル繊維である。
また、熱融着性繊維としては、ポリエチレンテレフタレートと低融点ポリエチレンテレフタレートからなるサイドバイサイドまたは芯鞘構造の複合繊維が好適であり、これら各繊維は夫々、所要の割合で混合され繊維ウエブに形成される。
【0007】
【発明の実施の形態】
以下、更に上記本発明の具体的実施の態様について詳述する。
【0008】
本発明は前述の如くホルムアルデヒド吸着能を有するポリエステル繊維が20〜85重量%で、親水性表面処理を施した吸湿性ポリエステル繊維を5〜65重量%の範囲と、熱融着性繊維を5〜30重量%含有してなる組成の繊維ウエブを用いニードルパンチ処理により構成繊維を互いに交絡して不織布とすることを基本とするものである。
ここで上記ホルムアルデヒド吸着能を有するポリエステル繊維としては、例えばアセトアセチル基含有高分子物や含窒素化合物をポリエステル繊維にコーティングして得られる繊維が挙げられ、その繊度は2デシテックスから17デシテックスが好適である。そして、該繊維を繊維ウエブに配合する割合としては、組成重量比が20〜85重量%、特に20〜75重量%がよく、20重量%以下では消臭能力が不十分となり、後述の吸湿性ポリエステル繊維との相乗による効果が十分発揮できない。
【0009】
一方、吸湿性ポリエステル繊維としては、ポリエステル繊維に親水性の表面処理として高松油脂製の親水性剤(SR−6200)で処理することで得られた親水性ポリエステル繊維が挙げられる
この吸湿性ポリエステル繊維の繊維ウエブにおける配合割合としては、組成重量比が5重量%〜65重量%が好ましく、5重量%以下では吸着性繊維との相乗効果が発揮できない。また、吸湿性繊維が65重量%以上では吸着性繊維の量が少ないために吸着の限界となり、好ましくない。
【0010】
また、上記両繊維と共に配合使用する熱融着性繊維としては、例えばポリエステル系樹脂,ポリエチレン系樹脂,ポリプロピレン系樹脂,ポリアミド系樹脂の何れかの熱可塑性樹脂の高融点成分と低融点成分ならなる芯鞘型、サイドバイサイド型構造の複合繊維である。
具体例としては、ポリエステル繊維(融点250℃〜270℃程度)と低融点ポリエステル繊維(融点100℃〜150℃程度)の複合繊維、エステル/ナイロン複合繊維、ポリエステル/ポリエチレン複合繊維、ポリプロピレン/ポリエチレン複合繊維などが挙げられ、特に高融点ポリエステルと、低融点ポリエステルとの複合繊維は最も実用的である。
【0011】
この熱融着性繊維は自動車の内装材やカーペットの裏地等に加工するために、前記吸着性能を有する繊維との配合において構成繊維中に5重量%以上、なかんづく10重量%以上含まれることが良好な加工性を得ることが出来、かつ製品の吸着性能を確保するめためには30重量%以下、とりわけ20重量%以下であることが好ましい。
【0012】
そして、上記吸着性能を有する繊維と吸湿性繊維及び熱融着性繊維が配合され、均一に混合された繊維ウエブはニードルパンチ処理により構成繊維が互いに交絡され、ニードルパンチ不織布の形態で内装材に供されるが、ニードルパンチ不織布の目付は加工時による表面の繊維が毛羽立ったり、破れが生じにくいようにするために、30g/m以上、就中、60g/m以上とすることが好ましく、内装材のボリューム感等を確保するためには300g/m〜500g/mとすることが好ましい。
なお、ニードルパンチによる繊維の交絡処理は、表面に起毛を起こさないように両面を均一にパンチすることが好適であり、かつ肝要である。
【0013】
【実施例】
以下、本発明の実施例及び比較例により、本発明をより具体的に説明する。
なお、以下の実施例及び比較例における目付量,厚さ,消臭性能評価及び不織布形態保持性評価は夫々、下記の方法に従って行った。
【0014】
目付量
JIS L1096の8.4.2に記載の方法に準拠して求めた。
厚さ
JIS L1096の8.5.1に記載の方法に従って荷重2KPaで測定した。
【0015】
吸着性能評価
試料の重さ ;3.0g
試料容器 ;5リットルテドラーパック
容器のガス量;3リットル
ガス初期濃度;ホルムアルデヒド 15ppm
ガス測定方法;検知管
試験室温度 ;20℃
測定時間 ;2時間、24時間
空試験・・・・・試料を入れないで同様に操作したもの。
【0016】
不織布の形態保持性評価
カーペットの裏地として加工した後の不織布面の短繊維状態を評価した。
表面に毛羽,ループが認められないものは○,表面にループが認められるものは△,表面がループと毛羽が混在する場合は×で判断した。
【0017】
実施例1
繊度3.3デシテックス、繊維長51mmのポリエステル黒原着繊維(融点260℃)を親水性の表面処理として高松油脂製の親水性剤(SR−6200)を3重量%付着処理させ、(以下、吸水処理加工という)吸湿性繊維を得た。
この吸湿性繊維を5重量%用いて繊度4.4デシテックス、繊維長51mmのポリエステル/低融点ポリエステル複合繊維(低融点ポリエステルの融点:110℃)10重量%、及び繊度6.7デシテックス、繊維長51mmのクラレ製品フレッシュナー(ポリエステル繊維、P888)85重量%を均一混合して、次いでカーディングして目付80g/mの繊維層(平均繊度:6.30デシテックス)とし、引き続き、表面に深さ13mm、打ち込み本数60本/cm、裏面に同様に深さ10mm、打ち込み本数90本/cm、更に表面に深さ8mm、打ち込み本数60本/cmのニードルパンチ処理を施し本発明の内装材を得た。
【0018】
実施例2
繊度3.3デシテックス、繊維長51mmのポリエステル黒原着繊維を吸水処理加工して吸湿性繊維を得た。この吸湿性繊維を用いて5重量%、繊度4.4デシテックス、繊維長51mmのポリエステル/低融点ポリエステル複合繊維(低融点ポリエステルの融点:110℃)を20重量%、及び繊度6.7デシテックス、繊維長51mmのクラレ製フレッシュナー75重量%を均一混合し、実施例1と同じ目付80g/mで同じ条件のニードルパンチ処理を施して本発明の内装材得た。
【0019】
実施例3
実施例2で用いた繊度3.3デシテックス、繊維長51mmのポリエステル黒原着繊維を吸水処理加工した吸湿性繊維25重量%、繊度4.4デシテックス、繊維長51mmのポリエステル/低融点ポリエステル複合繊維(低融点ポリエステルの融点:110℃)15重量%、及び繊度6.7デシテックス、繊維長51mmのクラレ製品フレッシュナー60重量%を均一混合し、実施例1と同じ目付80g/mで同じ条件のニードルパンチ処理を実施して本発明の内装材を得た。
【0020】
実施例4
実施例2で用いた繊度3.3デシテックス、繊維長51mmのポリエステル黒原着繊維を吸水処理加工した吸湿性繊維65重量%に繊度4.4デシテックス、繊維長51mmのポリエステル/低融点ポリエステル複合繊維(低融点ポリエステルの融点:110℃)15重量%、及び繊度6.7デシテックス、繊維長51mmのクラレ製品フレッシュナー20重量%を均一混合し、実施例1と同じ目付80g/mで同じ条件のニードルパンチ処理を実施して本発明の内装材を得た。
【0021】
比較例1
繊度3.3デシテックス、繊維長51mmのポリエステル黒原着繊維を吸水処理加工して得た吸湿性繊維9重量%に対し、繊度4.4デシテックス、繊維長51mmのポリエステル/低融点ポリエステル複合繊維(低融点ポリエステルの融点:110℃)4重量%、及び繊度6.7デシテックス、繊維長51mmのクラレ製品フレッシュナー87重量%を配合し、カーディングして均一に混合した繊維層(平均繊度:6.30デシテックス)を得た。これを実施例2と同じ目付80g/mと同じ条件のニードルパンチ処理を実施して比較内装材を得た。
【0022】
比較例2
繊度3.3デシテックス、繊維長51mmのポリエステル黒原着繊維を吸水処理加工して得た吸湿性繊維を15重量%、繊度4.4デシテックス、繊維長51mmのポリエステル/低融点ポリエステル複合繊維(低融点ポリエステルの融点:110℃)15重量%、及び繊度6.7デシテックス、繊維長64mmの消臭繊維(市販品)70重量%を均一混合し、実施例2と同じ目付80g/mと同じ条件のニードルパンチ処理を実施して比較内装材を得た。
【0023】
比較例3
繊度3.3デシテックス、繊維長51mmのレーヨン繊維を15重量%、繊度4.4デシテックス、繊維長51mmのポリエステル/低融点ポリエステル複合繊維(低融点ポリエステルの融点:110℃)15重量%、及び繊度6.7デシテックス、繊維長51mmのクラレ製品フレッシュナー70重量%を均一混合し、実施例2と同じ目付80g/mと同じ条件のニードルパンチ処理を実施して比較内装材を得た。
【0024】
以上の各実施例,比較例により得られた不織布内装材について、夫々前記に従って各持性を評価した。その結果を下記表1に示す。
【0025】
【表1】
【0026】
上記の表より明らかなように、不織布中の熱融着性繊維が5重量%〜30重量%の範囲においては形態保持性が良好で、かつホルムアルデヒドの吸着性能(2時間後の残量)は吸着繊維が70重量%以上であれば優れた性能を示していることが分かる。
【0027】
また、不織布中の熱融着性繊維が5重量%以下であると、ホルムアルデヒドの吸着性能が優れていても、形態保持性が悪く、商品としては劣り、不織布中の吸湿性繊維が5重量%以下では吸着繊維との相乗効果を発揮することができない。また、65重量%以上では吸着繊維の量が少ないために吸着の限界となり、好ましくない。
【0028】
【発明の効果】
本発明内装材は以上のように。ホルムアルデヒド吸着能を有するポリエステル繊維を20〜80重量%含有し、親水性表面処理を施した吸湿性ポリエステル繊維を5〜65重量%の範囲と、熱融着性繊維を5〜30重量%含有する繊維ウエブにニードルパンチ処理を施し構成繊維を互いに交絡せしめたものであり、吸着性能を有する繊維に吸湿性繊維を特定量含むことにより室内や車内に揮発、滞留している悪臭、特にホルムアルデヒドなどの化学物質を吸着能を損なうことなく、効果的に吸着除去することが出来、しかも熱融着性繊維を適量含有していることにより、形態保持性が頗る良好である効果を有し、広く実用されるポリエステル繊維を主材とする不織布内装材として極めて実用的効果を奏する
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an interior material excellent in formaldehyde adsorbing ability. Specifically , the main material is a polyester fiber that stays in a vehicle or in a room and can adsorb and remove unpleasant odors or harmful chemical substances such as formaldehyde. It is related with the nonwoven fabric interior material.
[0002]
[Prior art]
In recent years, the influence of chemical substances on the human body has become a problem. For example, the so-called “sick house syndrome”, which causes headaches and dizziness in newly built houses, and the presence of bad odors indoors, in cars, etc., are threats to a comfortable living environment.
[0003]
However, as a countermeasure for these problems, the current situation is to wait for a natural decrease due to volatilization and diffusion, and some removal by physical adsorption or chemical adsorption has been proposed. I haven't been able to do that.
[0004]
[Problems to be solved by the invention]
The present inventor has dealt with the actual situation as described above, and uses a fiber having an action of chemically adsorbing a chemical substance such as formaldehyde and the like, which is volatilized and stays in a room or in a vehicle, in order to solve the problem. We tried to create a non-woven fabric, but in creating it, we had to add fibers that do not have adsorbability, such as primary fibers, due to other functions, such as inter-fiber adhesion and design properties. It has been found that the amount of fibers having performance decreases and the adsorption capacity decreases.
[0005]
The present invention is based on the fact that such is intended to reduce the resolution of the polyester non-woven fabric suitable for use as interior materials, in particular by including a specific amount of hygroscopic polyester fibers polyester fibers having a formaldehyde adsorption performance, in addition Even if it is necessary to add non-adsorptive fibers because of its function, it effectively absorbs and removes formaldehyde and other chemicals and odors that stay in the car or the room without impairing the adsorption capacity. It is an object of the present invention to provide a nonwoven fabric interior material mainly composed of polyester fiber that exhibits such effects.
[0006]
[Means for Solving the Problems]
That is, the feature of the present invention that meets the above-mentioned purpose is that the polyester fiber having formaldehyde adsorption capacity is 20 to 85% by weight, the hygroscopic polyester fiber subjected to hydrophilic surface treatment is in the range of 5 to 65% by weight, and The nonwoven fabric interior material is formed by subjecting a fiber web containing heat-fusible fibers in the range of 5 to 30% by weight to needle punching and intertwining the constituent fibers.
Here, as the polyester fiber having the above-described formaldehyde adsorption ability, a polyester fiber coated with A Setoasechiru group-containing polymer compound and a nitrogen-containing compound, as a hygroscopic polyester fiber, a hydrophilic surface treatment to a fiber維表surface Polyester fiber applied .
Moreover, as the heat-fusible fiber, a side-by-side or core-sheath composite fiber composed of polyethylene terephthalate and low-melting point polyethylene terephthalate is suitable, and each of these fibers is mixed at a required ratio to be formed into a fiber web. .
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, specific embodiments of the present invention will be described in detail.
[0008]
In the present invention, as described above, the polyester fiber having formaldehyde adsorption capacity is 20 to 85% by weight, the hygroscopic polyester fiber subjected to hydrophilic surface treatment is in the range of 5 to 65% by weight, and the heat-fusible fiber is 5 to 5%. Basically, a nonwoven fabric is obtained by interlacing the constituent fibers with each other by needle punching using a fiber web having a composition containing 30% by weight.
Here, examples of the polyester fiber having the formaldehyde adsorption ability include fibers obtained by coating a polyester fiber with an acetoacetyl group-containing polymer or a nitrogen-containing compound, and the fineness is preferably 2 dtex to 17 dtex. is there. And as a ratio which mix | blends this fiber with a fiber web, 20-85 weight% of composition weight ratios are good especially 20-75 weight%, and in 20 weight% or less, deodorizing ability becomes inadequate and the hygroscopic property mentioned later The effect of synergy with the polyester fiber cannot be fully exhibited.
[0009]
On the other hand, the hygroscopic polyester fibers, hydrophilic polyester fiber obtained by processing a surface treatment of the hydrophilic to the port Riesuteru fibers Takamatsu Yushi hydrophilic agent (SR-6200).
As a blending ratio of the hygroscopic polyester fiber in the fiber web, the composition weight ratio is preferably 5% by weight to 65% by weight, and if it is 5% by weight or less, the synergistic effect with the adsorptive fiber cannot be exhibited. On the other hand, if the hygroscopic fiber is 65% by weight or more, the amount of the adsorptive fiber is small, which is the limit of adsorption, which is not preferable.
[0010]
Further, the heat-fusible fiber used in combination with the two fibers is, for example, a high-melting component and a low-melting component of a thermoplastic resin such as a polyester resin, a polyethylene resin, a polypropylene resin, or a polyamide resin. It is a composite fiber having a core-sheath type and a side-by-side type structure.
Specific examples include composite fibers of polyester fibers (melting point of about 250 ° C. to 270 ° C.) and low melting point polyester fibers (melting point of about 100 ° C. to 150 ° C.), ester / nylon composite fibers, polyester / polyethylene composite fibers, polypropylene / polyethylene composites. Examples thereof include fibers, and in particular, composite fibers of a high-melting polyester and a low-melting polyester are most practical.
[0011]
In order to process this heat-fusible fiber into an automobile interior material, carpet lining, etc., it may be contained in the constituent fiber in an amount of 5% by weight or more, especially 10% by weight or more, in combination with the fiber having the adsorption performance. In order to obtain good processability and to secure the adsorption performance of the product, it is preferably 30% by weight or less, particularly preferably 20% by weight or less.
[0012]
The fiber having the above-mentioned adsorption performance, the hygroscopic fiber, and the heat-fusible fiber are blended, and the uniformly mixed fiber web is entangled with each other by needle punching, and is used as an interior material in the form of a needle punched nonwoven fabric. However, the basis weight of the needle punched nonwoven fabric is preferably 30 g / m 2 or more, and more preferably 60 g / m 2 or more so that the fibers on the surface during processing are less likely to fluff or break. , in order to ensure a voluminous such interior materials it is preferably set to 300g / m 2 ~500g / m 2 .
In addition, it is suitable and important for the fiber entanglement process by the needle punch to punch both surfaces uniformly so as not to raise the surface.
[0013]
【Example】
Hereinafter, the present invention will be described more specifically by way of examples and comparative examples of the present invention.
In addition, the fabric weight, thickness, deodorizing performance evaluation, and nonwoven fabric form retainability evaluation in the following examples and comparative examples were performed according to the following methods, respectively.
[0014]
The basis weight was determined in accordance with the method described in 8.4.2 of JIS L1096.
The thickness was measured at a load of 2 KPa in accordance with the method described in 8.5.1 of JIS L1096.
[0015]
Weight of adsorption performance evaluation sample: 3.0 g
Sample container; gas volume in 5 liter Tedlar pack container; 3 liter gas initial concentration; formaldehyde 15 ppm
Gas measurement method; detector tube test chamber temperature; 20 ° C
Measurement time: 2 hours, 24 hours blank test: The same operation was carried out without inserting a sample.
[0016]
Evaluation of shape retention of nonwoven fabric The short fiber state of the nonwoven fabric surface after processing as a carpet backing was evaluated.
Fluff on the surface and loops not recognized were judged as ◯, those with a loop on the surface were judged as △, and when the surface was mixed with loops and fluffs, it was judged as ×.
[0017]
Example 1
A polyester black original fiber (melting point 260 ° C.) having a fineness of 3.3 dtex and a fiber length of 51 mm is used as a hydrophilic surface treatment, and 3% by weight of a hydrophilic agent (SR-6200) made of Takamatsu Yushi is attached (hereinafter referred to as water absorption). A hygroscopic fiber (called processing) was obtained.
Using 5% by weight of this hygroscopic fiber, the fineness is 4.4 decitex, the polyester / low-melting polyester composite fiber having a fiber length of 51 mm (melting point of low-melting polyester: 110 ° C.) is 10% by weight, and the fineness is 6.7 decitex, the fiber length. Uniform mixing of 85% by weight of a 51 mm Kuraray product freshener (polyester fiber, P888), followed by carding to a fiber layer with a basis weight of 80 g / m 2 (average fineness: 6.30 dtex), The needle punching process was performed at a depth of 13 mm, the number of implantations of 60 / cm 2 , and similarly the depth of 10 mm, the number of implantations of 90 / cm 2 , and the depth of 8 mm, the number of implantations of 60 / cm 2 . The interior material was obtained.
[0018]
Example 2
A polyester black original fiber having a fineness of 3.3 dtex and a fiber length of 51 mm was subjected to a water absorption treatment to obtain a hygroscopic fiber. Using this hygroscopic fiber, 5% by weight, fineness of 4.4 dtex, 20% by weight of polyester / low melting point polyester composite fiber having a fiber length of 51 mm (melting point of low melting point polyester: 110 ° C.), and fineness of 6.7 dtex, 75% by weight of a Kuraray freshener having a fiber length of 51 mm was uniformly mixed, and subjected to needle punching under the same conditions at a basis weight of 80 g / m 2 as in Example 1 to obtain an interior material of the present invention.
[0019]
Example 3
Polyester / low-melting polyester composite fiber having a fineness of 3.3 dtex and a hygroscopic fiber obtained by water-absorbing a polyester black original fiber having a fiber length of 51 mm and a fiber length of 51 mm, a fineness of 4.4 dtex and a fiber length of 51 mm. 15% by weight of a low-melting polyester: 110 ° C.) and 60% by weight of a Kuraray product freshener having a fineness of 6.7 decitex and a fiber length of 51 mm were mixed uniformly, under the same conditions as in Example 1 with a basis weight of 80 g / m 2 . Needle punching was performed to obtain the interior material of the present invention.
[0020]
Example 4
A polyester / low-melting polyester composite fiber having a fineness of 4.4 decitex and a fiber length of 51 mm and a moisture absorption fiber of 65% by weight obtained by subjecting the polyester black original fiber having a fineness of 3.3 decitex and a fiber length of 51 mm to water absorption treatment used in Example 2 ( 15% by weight of a low-melting polyester: 110 ° C.) and 20% by weight of a Kuraray product freshener having a fineness of 6.7 decitex and a fiber length of 51 mm were mixed uniformly, and under the same conditions as in Example 1 with a basis weight of 80 g / m 2 . Needle punching was performed to obtain the interior material of the present invention.
[0021]
Comparative Example 1
Polyester low-melting-point polyester composite fiber with a fineness of 4.4 dtex and a fiber length of 51 mm (relative to 9% by weight of hygroscopic fibers obtained by water-absorbing polyester black original fiber with a fineness of 3.3 dtex and a fiber length of 51 mm) Melting point of melting point polyester: 110 ° C.) 4% by weight, and fiber layer in which Kuraray product freshener having a fineness of 6.7 decitex and a fiber length of 51 mm was blended and mixed uniformly by carding (average fineness: 6. 30 dtex) was obtained. This was subjected to needle punching under the same conditions as in Example 2 with a basis weight of 80 g / m 2 to obtain a comparative interior material.
[0022]
Comparative Example 2
15% by weight of a hygroscopic fiber obtained by water absorption treatment of a polyester black original fiber having a fineness of 3.3 dtex and a fiber length of 51 mm, a polyester / low-melting polyester composite fiber having a fineness of 4.4 dtex and a fiber length of 51 mm (low melting point) The melting point of the polyester: 110 ° C.) 15% by weight, and a fineness of 6.7 dtex and a fiber length of 64 mm deodorized fiber (commercially available product) of 70% by weight were mixed uniformly. The same conditions as in Example 2 with the same basis weight of 80 g / m 2 A comparative interior material was obtained by performing the needle punching process.
[0023]
Comparative Example 3
Fineness 3.3 decitex, rayon fiber having a fiber length of 51 mm, 15% by weight, fineness 4.4 decitex, fiber length 51 mm, polyester / low melting point polyester composite fiber (low melting point polyester melting point: 110 ° C.) 15% by weight, and fineness A comparative interior material was obtained by uniformly mixing 70% by weight of Kuraray product freshener with 6.7 dtex and fiber length of 51 mm, and performing needle punching under the same conditions as in Example 2 with a basis weight of 80 g / m 2 .
[0024]
About the nonwoven fabric interior material obtained by the above each Example and comparative example, each holding property was evaluated according to the above, respectively. The results are shown in Table 1 below.
[0025]
[Table 1]
[0026]
As is apparent from the above table, the form-retaining property is good when the heat-fusible fiber in the nonwoven fabric is in the range of 5 to 30% by weight, and the formaldehyde adsorption performance (remaining amount after 2 hours) is It can be seen that if the adsorbed fiber is 70% by weight or more, excellent performance is exhibited.
[0027]
Further, if the heat-fusible fiber in the nonwoven fabric is 5% by weight or less, even if the adsorption performance of formaldehyde is excellent, the form retention is poor and the product is inferior, and the hygroscopic fiber in the nonwoven fabric is 5% by weight. Below, a synergistic effect with adsorption fiber cannot be exhibited. On the other hand, if the amount is 65% by weight or more, the amount of adsorbed fibers is small, which is the limit of adsorption and is not preferable.
[0028]
【The invention's effect】
The interior material of the present invention is as described above. 20 to 80% by weight of polyester fiber having formaldehyde adsorption capacity, 5 to 65% by weight of hygroscopic polyester fiber subjected to hydrophilic surface treatment, and 5 to 30% by weight of heat-fusible fiber The fiber web is subjected to needle punch treatment and the constituent fibers are entangled with each other. without impairing the adsorbability chemicals effectively can be adsorbed and removed, yet by containing an appropriate amount of heat-fusible fibers, has the effect form stability is extremely good, widely used As a nonwoven fabric interior material mainly composed of a polyester fiber to be produced, it has a very practical effect .

Claims (3)

ホルムアルデヒド吸着能を有するポリエステル繊維を20〜85重量%含み、繊維表面に親水性処理を施した吸湿性ポリエステル繊維を5〜65重量%の範囲と、熱融着性繊維を5〜30重量%の範囲を含有してなる繊維ウエブにニードルパンチ処理を施し、構成繊維を互いに絡号せしめてなることを特徴とするホルムアルデヒド吸着能に優れた内装材。20% to 85% by weight of a polyester fiber having formaldehyde adsorption capacity, 5% to 65% by weight of a hygroscopic polyester fiber having a hydrophilic surface applied to the fiber surface, and 5% to 30% by weight of a heat-fusible fiber. An interior material excellent in formaldehyde adsorbing capacity, wherein a fiber web containing a range is subjected to needle punching and entangled constituent fibers. ホルムアルデヒド吸着能を有するポリエステル繊維がアセトアセチル基含有高分子物や含窒素化合物をポリエステル繊維にコーティングした繊維である請求項1記載のホルムアルデヒド吸着能に優れた内装材。The interior material excellent in formaldehyde adsorption capability according to claim 1, wherein the polyester fiber having formaldehyde adsorption capability is a fiber obtained by coating a polyester fiber with an acetoacetyl group-containing polymer or a nitrogen-containing compound. 熱融着性繊維がポリエチレンテレフタレートと低融点ポリエチレンテレフタレートからなるサイドバイサイドまたは芯鞘構造の複合繊維である請求項1または2記載のホルムアルデヒド吸着能に優れた内装材。The interior material excellent in formaldehyde adsorption ability according to claim 1 or 2, wherein the heat-fusible fiber is a side-by-side or core-sheath composite fiber made of polyethylene terephthalate and low melting point polyethylene terephthalate.
JP2002343463A 2002-11-27 2002-11-27 Interior material with excellent formaldehyde adsorption capacity Expired - Fee Related JP4152729B2 (en)

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