JPS6182819A - Filter medium - Google Patents

Filter medium

Info

Publication number
JPS6182819A
JPS6182819A JP59203773A JP20377384A JPS6182819A JP S6182819 A JPS6182819 A JP S6182819A JP 59203773 A JP59203773 A JP 59203773A JP 20377384 A JP20377384 A JP 20377384A JP S6182819 A JPS6182819 A JP S6182819A
Authority
JP
Japan
Prior art keywords
web
fibers
filter material
fiber
core
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
Application number
JP59203773A
Other languages
Japanese (ja)
Inventor
Tadashi Tamura
忠 田村
Kunikazu Kishimoto
岸本　邦和
Yutaka Ogaki
豊 大垣
Yoshiyuki Nakamura
善幸 中村
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Japan Vilene Co Ltd
Original Assignee
Japan Vilene Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Japan Vilene Co Ltd filed Critical Japan Vilene Co Ltd
Priority to JP59203773A priority Critical patent/JPS6182819A/en
Priority to DE8515370U priority patent/DE8515370U1/en
Publication of JPS6182819A publication Critical patent/JPS6182819A/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/08—Filter cloth, i.e. woven, knitted or interlaced material
    • B01D39/083—Filter cloth, i.e. woven, knitted or interlaced material of organic material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/14—Other self-supporting filtering material ; Other filtering material
    • B01D39/16—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres
    • B01D39/1607—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous
    • B01D39/1623—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous of synthetic origin
    • B01D39/163—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous of synthetic origin sintered or bonded
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/02—Types of fibres, filaments or particles, self-supporting or supported materials
    • B01D2239/0216—Bicomponent or multicomponent fibres
    • B01D2239/0225—Side-by-side
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/02—Types of fibres, filaments or particles, self-supporting or supported materials
    • B01D2239/0216—Bicomponent or multicomponent fibres
    • B01D2239/0233—Island-in-sea
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/08—Special characteristics of binders
    • B01D2239/086—Binders between particles or fibres

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Filtering Materials (AREA)
  • Nonwoven Fabrics (AREA)

Abstract

PURPOSE:To obtain the title filter medium wherein fuzz is scarcely generated by using a web consisting of a parallel conjugate fiber on the inflow side and a web consisting of a core-sheath conjugate fiber on the outflow side. CONSTITUTION:A web contg. >=50% core-sheath fiber is formed on a reticular conveyor by a card or an air lay method and web contg. >=30% parallel fiber is superposed thereon. The low m.p. component in the conjugate fiber is melted by blowing hot air on the web from above and below the web to bond both fibers. At this time, the surface of the web in contact with the conveyor is sufficiently bonded to form a dense surface and a filter medium having a density gradient can be obtained. A fiber having higher m.p. than the low m.p. component is preferably mixed into the conjugate fiber.

Description

【発明の詳細な説明】 （産業上の利用分野） 気体あるいは液体等の流体のＰ・過に適するフィルタ材
に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) This invention relates to a filter material suitable for P/P of fluids such as gases or liquids.

（従来の技術） 従来、フィルタ材をつくる方法の１つとしては低融点成
分と高融点成分とを含む並列型の複合繊維を用いる方法
が特公昭５（−１８７８７号等でよく知られている。そ
して捕集効率を高め、しかもフィルタ材の寿命を長くす
る方法の１つとして密度差のあるフィルタ材にすること
も知られている。(Prior Art) Conventionally, one of the methods for making filter materials is a method using parallel type composite fibers containing a low melting point component and a high melting point component, which is well known from Japanese Patent Publication No. 5 (1973) (No.-18787, etc.). It is also known to use filter materials with different densities as one of the methods to increase the collection efficiency and extend the life of the filter material.

そこで、構成徨維關を接着性の複合繊維で融着すれば表
面と裏面では密度に差のあるいわゆる密度勾配型のフィ
ルタ材が得られる。しかし従来の方法では均一で、十分
に大きな密度差をもまたフィルタ材を得ることは難しく
、また、密面の毛羽の発生を少なくすることも難しい問
題であった。従来のように密度差が小さいとフィルタ材
の寿命が長くならないし、また、液体の流出側となる密
面の毛羽の発生が多くなれば使用時にその毛羽が飛散し
てフィルタ材自体が塵の発生源となるため、好ましくな
いのである。Therefore, by fusing the constituent fibers with adhesive composite fibers, a so-called density gradient type filter material having a difference in density between the front and back surfaces can be obtained. However, with conventional methods, it is difficult to obtain a filter material that is uniform and has a sufficiently large density difference, and it is also difficult to reduce the occurrence of fuzz on dense surfaces. If the density difference is small as in the past, the life of the filter material will not be long, and if more fuzz is generated on the dense surface from which the liquid flows out, the fuzz will fly off during use and the filter material itself will become dusty. This is not desirable because it becomes a source of generation.

（発明が解決しようとする問題点） 本発明は従来の欠点を克服するため、十分な密度差をも
たせてフィルタ材の寿命をのばすと共に密面をさらに緻
密にして流体の流出側の毛羽をより少なりシ、その飛散
を防止しようとするものである。(Problems to be Solved by the Invention) In order to overcome the conventional drawbacks, the present invention extends the life of the filter material by providing a sufficient density difference, and further densifies the dense surface to reduce fuzz on the fluid outflow side. To some extent, it is intended to prevent its scattering.

Ｃ問題点を解決するための手段） 本発明は、複合繊維を含むウェブが熱融着されてなるフ
ィルタ材において該フィルタの流体流入側が並列型複合
繊維を含むウェブから構成され、流体流出側が少なくと
も５０％以上の芯鞘型複合繊維を含むウェブから構成さ
れてなることを特徴とするフィルタ材である。Means for Solving Problem C) The present invention provides a filter material formed by heat-sealing a web containing composite fibers, in which the fluid inflow side of the filter is composed of a web containing parallel composite fibers, and the fluid outflow side is composed of a web containing parallel composite fibers. A filter material characterized in that it is composed of a web containing 50% or more of core-sheath composite fibers.

本発明における複合繊維は低融点成分と高融点成分とか
らなり、低融点成分が熱処理により繊維同志を接層する
作用を有するもので、低融点成分と高融点成分との比率
は適宜の範囲で設計できる。The composite fiber in the present invention is composed of a low melting point component and a high melting point component, and the low melting point component has the effect of layering the fibers together through heat treatment, and the ratio of the low melting point component and the high melting point component is within an appropriate range. Can be designed.

低融点成分−高融点成分の組み合わせとして”は、ポリ
エチレンーボリプロビしく、６ナイロンー６６ナイロン
等が代表的であるが、他のポリオレフィン系、ポリアミ
ド系、ポリエステル系の種々のものが１吏用できる。Typical combinations of low melting point components and high melting point components are polyethylene-polypropylene, nylon 6-nylon 66, etc., but various other polyolefin-based, polyamide-based, and polyester-based materials can also be used. .

（作用） 本発明は並列型複合繊維と芯鞘型複合繊維とをそれぞれ
含むウェブを使って、それぞれ流体の流入側と流出側と
を構成することに大きな特徴を有するものである。従来
は並列型複合繊維で接着していたため、低融点成分同志
が交叉又は隣接すれば十分に接着して毛羽の発生が殆ん
どないけれど、一方、高融点成分同志が交叉又は隣接す
る部分は全く接着されず毛羽の発生が著しいという問題
があった。(Function) The present invention has a major feature in that the fluid inflow side and fluid outflow side are constructed using webs each containing parallel type conjugate fibers and core-sheath type conjugate fibers. Conventionally, bonding was done using parallel composite fibers, so if the low melting point components intersect or are adjacent to each other, the bond is sufficient and there is almost no fuzz. There was a problem in that the adhesive was not adhered at all and fluffing was noticeable.

本発明では繊維の表面全体が低融点成分で被覆されてい
る芯鞘型複合繊維を流出側のウェブの接着繊維として用
いているので、繊維の交叉又は隣接する点では必らず低
融点成分で接着されることになり毛羽の発生が殆んど生
じないのである。しかも、交叉または隣接する接゛着点
が従来脳も０に比″′″１は、るかに多くなる″′緻密
な構造となるのである。In the present invention, a core-sheath composite fiber whose entire surface is coated with a low melting point component is used as the adhesive fiber for the outflow side web, so the low melting point component is not necessarily present at the intersection or adjacent points of the fibers. Since it is bonded, there is almost no fuzz. Furthermore, the brain has a dense structure in which the number of crossing or adjacent connection points is far greater than 0 in the conventional brain.

一方、流入側のウェブは従来の並列製繊維を接着繊維と
して用いているので従来と同様に繊維間の接着点は前記
流出側に比べて少なく、密度的にも小さいものとなる。On the other hand, since the web on the inflow side uses conventional parallel fibers as adhesive fibers, the number of bonding points between the fibers is smaller than on the outflow side, and the density is also smaller, as in the past.

このように少なくとも流入側のウェブと流出側のウェブ
とを重ねて熱処理を施せば、本発明の密度勾配のあるフ
ィルタ材が得られるが、流出側に用いる芯鞘型複合繊維
は少なくとも５０％以上必要で、好ましくは７５〜１０
０％である。If at least the inflow side web and the outflow side web are overlapped and heat-treated in this way, the filter material with a density gradient of the present invention can be obtained, but the core-sheath type composite fiber used on the outflow side has a content of at least 50% or more. Required, preferably 75-10
It is 0%.

以下に本発明のフィルタ材の製造方法の′−例を説明す
る。An example of the method for manufacturing the filter material of the present invention will be explained below.

まず、芯鞘型繊維を少なくとも５０％以上含むウェブ金
カード法、エアレイ法等によりネット状コンベアの上に
形成し、この上に好ましくは３０％以上の並列型繊維を
含むウェブを重ねてウェブの上部及び下部より熱風を吹
きつけることにより複合繊維の低融点成分を融かして繊
維１南が接層される。このとき、コンベアと接するウェ
ブ面の接着を十分に行なうことにより密面を形成し密度
勾配のあるフィルタ材が得られる。First, a web containing at least 50% of core-sheath type fibers is formed on a net-like conveyor by a gold card method, an air-laying method, etc., and a web containing preferably 30% or more of parallel type fibers is layered on top of this. By blowing hot air from the upper and lower parts, the low melting point components of the composite fibers are melted and the fiber 1 south is layered. At this time, by sufficiently adhering the web surface in contact with the conveyor, a dense surface is formed and a filter material with a density gradient can be obtained.

なお、芯鞘型及び並列型後１合繊維以外は一般の合成繊
維等を使ってよいが、低融点成分より低い融点をもつ繊
維を用いると、得られたフィルタ材の厚みがつぶれたり
、初期圧力損失等金玉げることになり好ましくないので
、より高い融点のものを混ぜる方がよい。Note that general synthetic fibers may be used for the fibers other than the core-sheath type and the parallel type fibers, but if fibers with a melting point lower than the low melting point component are used, the thickness of the resulting filter material may collapse or the initial It is better to mix in a material with a higher melting point, as this is undesirable as it will cause pressure loss and other problems.

°また、難燃性、耐熱性、吸着性等の特性を有するａ、
維を混合すれば各種％注の向上したフィルタ材が得られ
るのでより好ましい。　　　４（実施例及び比較例） 実施例１ 高融点成分がポリプロピレン、低融点成分が低圧法ポリ
エチレンで、その比を１＝１とした、太さ３デニール、
長さ６４朋の並列型複合繊維１００％からなる重ｉｔ　
５０　ｆβのウェブを上層に、高融点の芯成分がポリプ
ロピレン、低融点の鞘成分が低圧法ポリエチレンで、そ
の比をｌ：１とした、太さ８デニール、長さ６４ｆｆの
芯鞘型複合繊維ｌＯＯ％からなる重量１５０１．Ａｄの
ウェブを下層にして積層した重量３００ｆβのウェブを
ネット状コンベアの上にのせ、上下から熱風のあたる乾
燥機にて１４０℃５分間熱処理して、厚さ２＋１１のフ
ィルタ材を得た。このフィルタ材は大きな密度勾配を有
し、その下層の表面は緻密で毛羽の発生もなく平滑な表
面を有していた。この下層を気体の流出側としたフィル
タ材は塵埃の捕集効率が高く給塵量が大きく好ましいも
のであった。° Also, a, which has properties such as flame retardancy, heat resistance, and adsorption properties,
It is more preferable to mix fibers, as this will result in a filter material with improved various percentages. 4 (Examples and Comparative Examples) Example 1 High melting point component is polypropylene, low melting point component is low pressure polyethylene, the ratio is 1=1, thickness 3 denier,
It is made of 100% parallel composite fibers with a length of 64 mm.
A core-sheath composite fiber with a thickness of 8 denier and a length of 64 ff, with a web of 50 fβ as the upper layer, a high melting point core component of polypropylene, and a low melting point sheath component of low pressure polyethylene in a ratio of 1:1. Weight 1501.consisting of lOO%. A web with a weight of 300 fβ, which was laminated with a web of Ad as the lower layer, was placed on a net-like conveyor and heat-treated at 140° C. for 5 minutes in a dryer blowing hot air from above and below, to obtain a filter material with a thickness of 2+11. This filter material had a large density gradient, and the surface of the lower layer was dense and smooth with no fluff. This filter material with the lower layer on the gas outflow side was preferred because of its high dust collection efficiency and large amount of dust supply.

比較例１ 実施例１で用いた並列複合繊維のみを用いて重量ａｏｏ
ｙβのウェブをつくり、実施例１と同一条件で熱処理し
て、厚さ２５１ｒ１１のフィルタ材を得た。このフィル
タ材はゆるやかな密度勾配を有していたが下層の表面は
多くの毛羽の発生がみられ好ましいものではなかった。Comparative Example 1 Using only the parallel composite fibers used in Example 1, the weight aoo
A web of yβ was made and heat treated under the same conditions as in Example 1 to obtain a filter material with a thickness of 251r11. Although this filter material had a gentle density gradient, a lot of fuzz was observed on the surface of the lower layer, which was not desirable.

比較例２ 実施例１で用いた芯・鞘型複合繊維のみを用いて重量３
００ｙβのウェブをつくり、実Ｍ例１と同一条件で熱処
理して厚さ１５ｘｍのフィルタ材を得た。このフィルタ
材は密度勾配に乏しく緻密で、下層の表面は全く毛羽の
ないものであった。Comparative Example 2 Using only the core/sheath type composite fiber used in Example 1, the weight was 3.
A web of 00yβ was made and heat-treated under the same conditions as Example 1 to obtain a filter material with a thickness of 15xm. This filter material was dense with little density gradient, and the surface of the lower layer was completely free of fuzz.

実施例２ 実施例１と同じ並列型複合線ａ７ｏ％と、太さ３デニー
ル、長さ６４２ｒ１１のポリエステル繊維３０％とから
なる重ｉ１ｉ　１５０　ｆ７ｆｎ″の混合ウェブを上層
に、実施例工と同じ芯鞘型複合繊維５５％と、実施例１
と同じ並列型複合繊維４５％とからなる重量１５０１Ａ
ｄの混合ウェブを下層にして積層した重量３００ｙβの
ウェブを実施例１と同一条件で熱処理して厚さ２４ｊｒ
ｊｌのフィルタ材を得だ。このフィルタ材は大きな密度
勾配を有し、その下層の表面にわずかの毛羽の発生はあ
ったが、実用上、特に問題は生じなかった。Example 2 A mixed web of weight i1i 150 f7fn'' consisting of the same parallel composite wire a7o% as in Example 1 and 30% polyester fibers with a thickness of 3 denier and a length of 642 r11 was used as the upper layer, and the same core as in the example material was used. 55% sheath type composite fiber and Example 1
Weight 1501A consisting of 45% of the same parallel type composite fiber as
A web with a weight of 300yβ laminated with the mixed web of d as the lower layer was heat-treated under the same conditions as in Example 1 to a thickness of 24jr.
I got JL's filter material. This filter material had a large density gradient, and although a slight amount of fuzz was generated on the surface of the lower layer, no particular problem occurred in practical use.

これらの実施例及び比較例のフィルタ材の物性データを
表に示す。The physical property data of the filter materials of these Examples and Comparative Examples are shown in the table.

表 （発明の効果） このように本発明のフィルタ材は大きな密度勾配を有し
、流体の流出側が緻密で、毛羽を発生しないもので、強
度も高く優れた物性を有し、フィルタ材として使用して
極めて寿命の長いものである。Table (Effects of the Invention) As described above, the filter material of the present invention has a large density gradient, is dense on the fluid outflow side, does not generate fuzz, has high strength and excellent physical properties, and can be used as a filter material. It has an extremely long lifespan.

Claims (1)

【特許請求の範囲】[Claims] １、複合繊維を含むウェブが熱融着されてなるフィルタ
材において、該フィルタの流体流入側が並列型複合繊維
を含むウェブから構成され、流体流出側が少なくとも５
０％以上の芯鞘型複合繊維を含むウェブから構成されて
なることを特徴とするフィルタ材。1. In a filter material formed by heat-sealing a web containing composite fibers, the fluid inlet side of the filter is composed of a web containing parallel type composite fibers, and the fluid outlet side is composed of a web containing parallel type composite fibers, and the fluid outlet side is composed of a web containing parallel composite fibers.
A filter material comprising a web containing 0% or more of core-sheath composite fibers.
JP59203773A 1984-09-27 1984-09-27 Filter medium Pending JPS6182819A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP59203773A JPS6182819A (en) 1984-09-27 1984-09-27 Filter medium
DE8515370U DE8515370U1 (en) 1984-09-27 1985-05-24 Filter mat

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59203773A JPS6182819A (en) 1984-09-27 1984-09-27 Filter medium

Publications (1)

Publication Number Publication Date
JPS6182819A true JPS6182819A (en) 1986-04-26

Family

ID=16479556

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59203773A Pending JPS6182819A (en) 1984-09-27 1984-09-27 Filter medium

Country Status (2)

Country Link
JP (1) JPS6182819A (en)
DE (1) DE8515370U1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020072396A (en) * 2001-03-09 2002-09-16 황범수 Filter media and air filter using the filter media

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4316017C1 (en) * 1993-05-13 1994-09-15 Freudenberg Carl Fa Filter belt and process for the production thereof
DE4339709A1 (en) * 1993-11-22 1995-05-24 Mgf Gutsche & Co Gmbh Betriebs Multi-layer needle punched nonwoven, process for its manufacture and use
DE202015105210U1 (en) * 2015-10-02 2016-11-03 Ahlstrom Corp. Filter medium with high heat resistance

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020072396A (en) * 2001-03-09 2002-09-16 황범수 Filter media and air filter using the filter media

Also Published As

Publication number Publication date
DE8515370U1 (en) 1985-11-14

Similar Documents

Publication Publication Date Title
US5820645A (en) Pleatable nonwoven composite article for gas filter media
KR840005807A (en) Mop nonwoven
US5674339A (en) Process for fibrous structure containing immobilized particulate matter
US4813948A (en) Microwebs and nonwoven materials containing microwebs
EP0960645B1 (en) Vacuum cleaner bag or filter, and method of filtering a gas
RU2240856C2 (en) Filter made out of a composite material and a method of its manufacture
SE433826B (en) FILTER COVER AND WAY TO MAKE FABRIC
JPH03500733A (en) air-containing filtration material
JP2004532098A (en) Composite filter and method for producing the same
KR950005359A (en) Corrosion Resistant Metal Filter
EP1581327A1 (en) Multilayer nonwovens incorporating differential cross-sections
EP1258277A1 (en) Vacuum cleaner bag
JPS6182819A (en) Filter medium
JP2004263307A (en) Dry pulp nonwoven fabric having integrated layer structure
JP2002316010A (en) Charged filter and mask using the same
JPS6044004B2 (en) Non-woven filter
JPH11226337A (en) Activated carbon fiber sheet for filter
JPH03249250A (en) Heat-resistant nonwoven fabric
JPS6186919A (en) Filter material and its preparation
JPS6334661Y2 (en)
JPH0247357A (en) Formed article of fiber
JPH0245484B2 (en) ROZAI
JPS61278319A (en) Thick filter cartridge
JP2005067023A (en) Laminated and integrated water absorption mat for food
JPS6355074A (en) Filter for tea bag