JP2003310498A - Dust collection bag for electric vacuum cleaner - Google Patents

Dust collection bag for electric vacuum cleaner

Info

Publication number
JP2003310498A
JP2003310498A JP2002326209A JP2002326209A JP2003310498A JP 2003310498 A JP2003310498 A JP 2003310498A JP 2002326209 A JP2002326209 A JP 2002326209A JP 2002326209 A JP2002326209 A JP 2002326209A JP 2003310498 A JP2003310498 A JP 2003310498A
Authority
JP
Japan
Prior art keywords
bag
wet
vacuum cleaner
nonwoven fabric
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.)
Granted
Application number
JP2002326209A
Other languages
Japanese (ja)
Other versions
JP3665314B2 (en
Inventor
Takeshi Konishi
武四 小西
Eiji Hayashi
栄治 林
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.)
Kuraray Co Ltd
Original Assignee
Kuraray 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 Kuraray Co Ltd filed Critical Kuraray Co Ltd
Priority to JP2002326209A priority Critical patent/JP3665314B2/en
Priority to TW092102814A priority patent/TW200303185A/en
Priority to KR10-2003-0009127A priority patent/KR100491827B1/en
Priority to CN03106147A priority patent/CN1439328A/en
Publication of JP2003310498A publication Critical patent/JP2003310498A/en
Application granted granted Critical
Publication of JP3665314B2 publication Critical patent/JP3665314B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
    • H01R24/60—Contacts spaced along planar side wall transverse to longitudinal axis of engagement
    • H01R24/62—Sliding engagements with one side only, e.g. modular jack coupling devices
    • H01R24/64—Sliding engagements with one side only, e.g. modular jack coupling devices for high frequency, e.g. RJ 45
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
    • H01R24/76—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure with sockets, clips or analogous contacts and secured to apparatus or structure, e.g. to a wall
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R2201/00—Connectors or connections adapted for particular applications
    • H01R2201/06—Connectors or connections adapted for particular applications for computer periphery
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R2201/00—Connectors or connections adapted for particular applications
    • H01R2201/16—Connectors or connections adapted for particular applications for telephony

Landscapes

  • Filtering Materials (AREA)
  • Filters For Electric Vacuum Cleaners (AREA)
  • Nonwoven Fabrics (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a dust collection bag for an electric vacuum cleaner which achieves high collecting efficiency at a low pressure loss that is not attained sufficiently by conventional dust collection bags and is unlikely to break when used. <P>SOLUTION: The dust collection bag for the electric vacuum cleaner includes an inner bag and an outer bag and has the outer bag made of a fiber sheet having a basis weight of 35-80 g/m<SP>2</SP>and formed by superposing a wet nonwoven fabric containing equal to or more than 40% of a polyvinyl alcohol based fiber integrally to either side or both sides of a meltblown nonwoven fabric composed of fibers each having a fiber diameter equal to or less than 10 μm. <P>COPYRIGHT: (C)2004,JPO

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【発明の属する技術分野】本発明は電気掃除機用集塵袋
に関するものであり、より詳細には、低圧力損失及び捕
集効率に優れ、かつ使用時における破袋の生じにくい電
気掃除機用集塵袋に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dust collecting bag for an electric vacuum cleaner, and more particularly to a dust collecting bag for an electric vacuum cleaner, which has a low pressure loss and an excellent collection efficiency and is less likely to be broken during use. Regarding the dust bag.

【０００２】[0002]

【従来の技術】従来、電気掃除機用集塵袋として、内袋
と外袋との２層構造からなるフィルター紙を用いること
が提案されている（特許文献１参照）。しかしながら、
かかるフィルター紙を使用した場合、カビや花粉などの
微細塵を捕捉するためには紙の目付を増やす必要があ
り、その結果圧力損失が増加してしまうという課題を有
していた。また、捕集効率の向上を目的として、内袋に
不織布を用いた集塵袋が提案されている（例えば、特許
文献２および特許文献３参照）。しかしながら、これら
の集塵袋は使用中に補足される水分により破袋を招き、
集塵袋としての機能を損なうといった欠点があった。2. Description of the Related Art Conventionally, it has been proposed to use a filter paper having a two-layer structure of an inner bag and an outer bag as a dust collecting bag for an electric vacuum cleaner (see Patent Document 1). However,
When such a filter paper is used, it is necessary to increase the basis weight of the paper in order to capture fine dust such as mold and pollen, resulting in an increase in pressure loss. Further, for the purpose of improving the collection efficiency, a dust bag using a non-woven fabric as an inner bag has been proposed (see, for example, Patent Documents 2 and 3). However, these dust-collecting bags are apt to break due to the moisture trapped during use,
There was a defect that the function as a dust bag was impaired.

【０００３】このような課題を解決するために、例えば
メルトブロー不織布からなるフィルター層と湿式不織布
の補強層とが積層一体化された繊維シートを外袋として
用いた電気掃除機用集塵袋が提案されている（特許文献
４参照）。しかしながら、かかる電気掃除機用集塵袋
は、メルトブロー不織布と湿式不織布との接着強度が不
十分なために、使用中に両者の間に層間剥離が生じてし
まい、その結果、メルトブロー不織布の優れた粉塵捕集
能力を充分に活用することができなかった。また、粒径
の極めて細かい埃を吸塵した場合に目詰まりを起こしや
すく、集塵性能については決して満足できるものではな
かった。In order to solve such a problem, a dust bag for an electric vacuum cleaner using a fiber sheet as an outer bag in which a filter layer made of, for example, a melt blown nonwoven fabric and a reinforcing layer of a wet nonwoven fabric are laminated and integrated is proposed. (See Patent Document 4). However, such a dust collecting bag for an electric vacuum cleaner has insufficient adhesion strength between the melt-blown nonwoven fabric and the wet-laid nonwoven fabric, so that delamination occurs between the two during use, and as a result, the melt-blown nonwoven fabric is excellent. It was not possible to fully utilize the dust collection capacity. Further, when dust with an extremely fine particle size is absorbed, clogging is likely to occur, and the dust collection performance has never been satisfactory.

【０００４】[0004]

【特許文献１】実開平６−４８５５６号公報[Patent Document 1] Japanese Utility Model Publication No. 6-48556

【特許文献２】特開平２−１１６３３８号公報[Patent Document 2] Japanese Unexamined Patent Publication No. 2-116338

【特許文献３】実用新案登録第３０１９２８３号公報[Patent Document 3] Utility model registration No. 3019283

【特許文献４】特開２０００−１９５号公報[Patent Document 4] Japanese Patent Laid-Open No. 2000-195

【０００５】[0005]

【発明が解決しようとする課題】本発明の目的は、上述
の問題を解決するものであり、従来の電気掃除機用集塵
袋では十分に達成できなかった低圧力損失でしかも高捕
集効率であり、かつ使用時における破袋の生じにくい電
気掃除機用集塵袋を提供することにある。SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems, and it has a low pressure loss and a high collection efficiency which cannot be sufficiently achieved by a conventional dust bag for an electric vacuum cleaner. In addition, it is to provide a dust bag for an electric vacuum cleaner that is less likely to be broken during use.

【０００６】[0006]

【課題を解決するための手段】本発明者らは、上記の課
題を解決すべく鋭意検討を重ねた結果、特定の目付を有
するメルトブロー不織布の片面または両面に、ポリビニ
ルアルコール系繊維を特定量含有する湿式不織布を配置
した積層構造の繊維シートを外袋として用いることによ
り、上記課題が解決できることを見出し本発明に到達し
た。Means for Solving the Problems As a result of intensive studies to solve the above problems, the present inventors have found that a specific amount of polyvinyl alcohol fiber is contained on one side or both sides of a meltblown nonwoven fabric having a specific basis weight. The present invention has been found to be able to solve the above-mentioned problems by using a laminated fibrous sheet having a wet non-woven fabric arranged therein as an outer bag.

【０００７】すなわち本発明は、内袋と外袋とを有する
電気掃除機用集塵袋であって、外袋が、繊維径１０μｍ
以下の繊維から構成されるメルトブロー不織布とその片
面または両面にポリビニルアルコール系繊維を４０％以
上含む湿式不織布を積層一体化してなる目付が３５〜８
０ｇ／ｍ２の繊維シートからなる電気掃除機用集塵袋で
ある。That is, the present invention is a dust collecting bag for an electric vacuum cleaner having an inner bag and an outer bag, wherein the outer bag has a fiber diameter of 10 μm.
A melt-blown nonwoven fabric composed of the following fibers and a wet basis nonwoven fabric containing 40% or more of polyvinyl alcohol fiber on one or both sides have a unit weight of 35-8.
A dust collecting bag for an electric vacuum cleaner, which is made of a fiber sheet of 0 g / m 2 .

【０００８】[0008]

【発明の実施の形態】以下、本発明を具体的に説明す
る。本発明の電気掃除機用集塵袋は内袋と外袋との２層
構造からなり、外袋にメルトブロー不織布とポリビニル
アルコール系繊維を含む湿式不織布とが積層されてなる
繊維シートを用いることが重要である。本発明の電気掃
除機用集塵袋の外袋を構成する繊維シートの一層に用い
るメルトブロー不織布のポリマー素材は、例えば、ポリ
プロピレン、ポリエチレン等のポリオレフィン、ポリエ
チレンテレフタレートやポリブチレンテレフタレート等
のポリエステル、ナイロン６、ナイロン６６等のポリア
ミドなど熱可塑性ポリマーであれば特に限定されるもの
ではないが、商品を安価に消費者に提供する観点からポ
リオレフィン、特にポリプロピレンからなるメルトブロ
ー不織布が好ましい。BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be specifically described below. The dust collecting bag for an electric vacuum cleaner of the present invention has a two-layer structure including an inner bag and an outer bag, and a fiber sheet formed by laminating a melt blown nonwoven fabric and a wet nonwoven fabric containing polyvinyl alcohol fiber on the outer bag is used. is important. Examples of the polymer material of the melt-blown nonwoven fabric used for one layer of the fiber sheet constituting the outer bag of the dust collecting bag for the electric vacuum cleaner of the present invention include polyolefin such as polypropylene and polyethylene, polyester such as polyethylene terephthalate and polybutylene terephthalate, and nylon 6. Although it is not particularly limited as long as it is a thermoplastic polymer such as polyamide such as nylon 66, melt-blown non-woven fabric made of polyolefin, particularly polypropylene, is preferable from the viewpoint of providing the product at low cost to consumers.

【０００９】また、本発明の効果を損なわない範囲であ
れば、抗菌剤、防カビ剤等の薬剤を該熱可塑性繊維に添
加したり、不織布とした後に後加工処理することは何ら
差し支えない。Further, as long as the effects of the present invention are not impaired, chemicals such as an antibacterial agent and an antifungal agent may be added to the thermoplastic fiber, or post-treatment may be performed after forming the nonwoven fabric.

【００１０】該メルトブロー不織布を構成する単繊維径
は捕集効率向上の点から１０μｍ以下であり、５μｍ以
下が好ましい。しかし繊維径が小さすぎても圧力損失が
増大するという問題が生じる場合があるので、１μｍ以
上であることが好ましい。また、該メルトブロー不織布
の目付は、３〜３０ｇ／ｍ２が好ましく、５〜２０ｇ／
ｍ２がより好ましい。目付が３０ｇ／ｍ２を超えると圧
力損失が大きくなって掃除機の吸引力が低下してしま
い、一方、目付が３ｇ／ｍ２未満であると捕集効率が低
下する場合がある。より良好な捕集効率を発揮するに
は、５〜１０ｇ／ｍ ２が特に好ましい。かかるメルトブ
ロー不織布は、所定の熱可塑性ポリマーを溶融温度以上
に加熱し、ノズルより加圧押出しすることによって糸条
を形成し、さらに加熱空気をポリマーノズル孔の周辺か
ら噴出させて糸条を細化しながら金網上に捕集する、一
般的なメルトブロー技術により製造することができる。Diameter of single fiber constituting the melt blown nonwoven fabric
Is 10 μm or less from the viewpoint of improving collection efficiency, and 5 μm or less
Lower is preferred. However, if the fiber diameter is too small, the pressure loss
Since the problem of increase may occur, 1 μm or more
The above is preferable. Also, the melt blown nonwoven fabric
The basis weight is from 3 to 30 g / mTwoIs preferable, and 5 to 20 g /
mTwoIs more preferable. Basis weight is 30g / mTwoWhen the pressure exceeds
The power loss increases and the vacuum cleaner's suction power decreases.
On the other hand, the basis weight is 3 g / mTwoIf less than, collection efficiency is low
There is a case to go down. To show better collection efficiency
Is 5 to 10 g / m TwoIs particularly preferable. Such melt
Raw non-woven fabric is made by melting the specified thermoplastic polymer above the melting temperature.
The yarn is heated to
Of the polymer nozzle holes and heated air
It is spouted from the wire to make it thin and collect it on the wire mesh.
It can be manufactured by a general melt blow technique.

【００１１】該メルトブロー不織布の片面または両面に
積層される湿式不織布は、ポリビニルアルコール系繊維
を４０％以上含むことが重要である。該ポリビニルアル
コール系繊維は、適度な量を用いることによって湿式不
織布に充分な強度を与えるので、メルトブロー不織布の
機械的強度を補強するための役割を果たす。また、メル
トブロー不織布と湿式不織布との積層時に充分な接着強
度を与えるので、集塵袋として用いた場合に層間剥離と
いった欠点を防ぐこともできる。特に本発明において
は、該湿式不織布が７〜２０％のポリビニルアルコール
系バインダー繊維および３０〜８０％のポリビニルアル
コール系主体繊維を含むことが好ましい。ポリビニルア
ルコール系バインダー繊維の量が少なすぎると湿式不織
布の強力およびメルトブロー不織布との接着力が不足
し、多すぎると捕集効率が低下し、かつコスト的に不利
になるなどの欠点を生じる場合がある。捕集効率とメル
トブロー不織布との接着強度との両立の観点から配合さ
れるポリビニルアルコール系バインダー繊維は７〜２０
％が好ましく、より好ましくは１０〜１５％である。ま
た、本発明に用いられるポリビニルアルコール系主体繊
維は３０〜８０％が好ましく、５０〜７５％の範囲で混
合されることがより好ましい。該ポリビニルアルコール
系主体繊維の混合比率が３０％未満では充分な強度が得
られにくく、逆に８０％を超えるとバインダー繊維の混
合比率を所望の値に保つことが困難となる場合がある。
本発明においてポリビニルアルコール系主体繊維を用い
るメリットは、通気抵抗を増加させることなく集塵袋の
強度を向上させることにある。すなわち、ポリビニルア
ルコール系バインダー繊維とポリビニルアルコール系主
体繊維を併用することによって、得られる湿式不織布に
適度な空隙を形成させることができるため、通気抵抗が
低く、しかも強度の優れた集塵袋を作製することがで
き、さらに粒径の非常に細かい埃を吸塵する際により優
れた効果を発揮する。It is important that the wet non-woven fabric laminated on one side or both sides of the melt blown non-woven fabric contains 40% or more of polyvinyl alcohol fiber. The polyvinyl alcohol fiber imparts sufficient strength to the wet non-woven fabric by using an appropriate amount, and thus plays a role of reinforcing the mechanical strength of the melt blown non-woven fabric. Further, since a sufficient adhesive strength is provided when the meltblown nonwoven fabric and the wet nonwoven fabric are laminated, it is possible to prevent a defect such as delamination when used as a dust bag. Particularly in the present invention, it is preferable that the wet non-woven fabric contains 7 to 20% of polyvinyl alcohol-based binder fiber and 30 to 80% of polyvinyl alcohol-based main fiber. If the amount of the polyvinyl alcohol-based binder fiber is too small, the strength of the wet non-woven fabric and the adhesive force with the melt blown non-woven fabric may be insufficient, and if it is too large, the collection efficiency may be lowered, and disadvantages such as a cost disadvantage may occur. is there. The polyvinyl alcohol-based binder fiber to be blended is 7 to 20 from the viewpoint of both the collection efficiency and the adhesive strength with the melt blown nonwoven fabric.
% Is preferable, and more preferably 10 to 15%. The polyvinyl alcohol-based fiber used in the present invention is preferably 30 to 80%, more preferably 50 to 75%. If the mixing ratio of the polyvinyl alcohol-based fiber is less than 30%, it is difficult to obtain sufficient strength, and if it exceeds 80%, it may be difficult to maintain the mixing ratio of the binder fiber at a desired value.
The advantage of using the polyvinyl alcohol-based fiber in the present invention is to improve the strength of the dust bag without increasing the ventilation resistance. That is, by using the polyvinyl alcohol-based binder fiber and the polyvinyl alcohol-based main fiber together, it is possible to form an appropriate void in the obtained wet-laid nonwoven fabric, so that a ventilation bag with low ventilation resistance and excellent strength is produced. In addition, it exhibits a more excellent effect in absorbing dust with a very fine particle size.

【００１２】なお、本発明においてポリビニルアルコー
ル系バインダー繊維は、８０℃以下の水に溶解するもの
であって、ケン化度は９９．５モル％以下のものが好ま
しい。また、ポリビニルアルコール系主体繊維は９０℃
以下の水には溶解せず、ケン化度は９９．９モル％以上
のものが好ましい。また、該ポリビニルアルコール系主
体繊維は、アセタール化処理が施されていることが好ま
しい。なお、アセタール化度は１５〜４０モル％が好ま
しく、２５〜３５モル％がより好ましい。いずれの繊維
も構成するポリビニルアルコールの重合度は１０００〜
２５００であることが好ましい。本発明に用いるポリビ
ニルアルコール系繊維の製法は、公知の方法を採用する
ことでき、湿式紡糸法、乾湿式紡糸法、乾式紡糸法のい
ずれかを採用すればよい。In the present invention, it is preferable that the polyvinyl alcohol-based binder fiber be soluble in water at 80 ° C. or less and have a saponification degree of 99.5 mol% or less. Also, the polyvinyl alcohol-based fiber is 90 ° C.
It is preferably insoluble in the following water and has a saponification degree of 99.9 mol% or more. The polyvinyl alcohol-based fiber is preferably subjected to an acetalization treatment. The degree of acetalization is preferably 15 to 40 mol%, more preferably 25 to 35 mol%. The degree of polymerization of polyvinyl alcohol constituting all fibers is 1000 to
It is preferably 2500. As a method for producing the polyvinyl alcohol fiber used in the present invention, a known method can be adopted, and any one of a wet spinning method, a dry wet spinning method and a dry spinning method may be adopted.

【００１３】本発明に用いるポリビニルアルコール系繊
維は、湿式不織布として使用するためその繊度は０．３
〜１０ｄｔｅｘが好ましく、より好ましくは、０．５〜
５ｄｔｅｘである。また、カット長は１〜２０ｍｍが好
ましく、より好ましくは２〜１０ｍｍである。該ポリビ
ニルアルコール系繊維の繊度およびカット長が、上記の
範囲外であると抄造する際に繊維の分散が不良となる場
合がある。The polyvinyl alcohol fiber used in the present invention has a fineness of 0.3 because it is used as a wet non-woven fabric.
-10 dtex is preferable, and more preferably 0.5-
It is 5 dtex. The cut length is preferably 1 to 20 mm, more preferably 2 to 10 mm. If the fineness and the cut length of the polyvinyl alcohol fiber are out of the above ranges, the fiber may be poorly dispersed during papermaking.

【００１４】本発明において、メルトブロー不織布にポ
リオレフィン系ポリマー、特にポリプロピレンを用いた
場合であっても、湿式不織布中におけるポリビニルアル
コール系繊維の含量を上記の範囲とすることによってメ
ルトブロー不織布と湿式不織布からなる繊維シートが使
用中においても剥離することがなく、捕集効率の高い集
塵袋が得られるばかりでなく、粒径が１μｍ以下といっ
た極めて細かい粒子を効率よく捕集することができ、し
かも目詰まりを極めて起こしにくい。なお、本発明にお
いて、メルトブロー不織布と湿式不織布との剥離の生じ
にくさを示す尺度として、破裂強度を用いることができ
る。該破裂強度はミューレン法低圧測定器による測定
で、１９６ｋＰａ以上有しているのが好ましく、より好
ましくは２９４ｋＰａ以上である。また、湿潤状態にお
いては、６９ｋＰａ以上が好ましく、８８ｋＰａ以上の
破裂強度を有しているのがより好ましい。すなわち本発
明の電気掃除機用集塵袋は、乾燥状態、湿潤状態を問わ
ず使用中の破裂についても優れた耐性を有しているとい
う利点も有する。In the present invention, even when a polyolefin polymer, particularly polypropylene, is used for the meltblown nonwoven fabric, the meltblown nonwoven fabric and the wet nonwoven fabric are formed by adjusting the content of the polyvinyl alcohol fiber in the wet nonwoven fabric to the above range. The fiber sheet does not peel off even during use, and not only a dust bag with high collection efficiency can be obtained, but also extremely fine particles with a particle size of 1 μm or less can be collected efficiently, and clogging Is extremely difficult to cause. In the present invention, burst strength can be used as a measure of the difficulty of peeling between the meltblown nonwoven fabric and the wet nonwoven fabric. The burst strength is preferably 196 kPa or more, more preferably 294 kPa or more, as measured by a Murren low-pressure measuring device. In the wet state, it is preferably 69 kPa or higher, more preferably 88 kPa or higher. That is, the dust bag for an electric vacuum cleaner of the present invention also has an advantage that it has excellent resistance to rupture during use regardless of a dry state or a wet state.

【００１５】また、該湿式不織布には他の繊維を配合し
てもよいが、配合される他の繊維としては、合成繊維や
パルプ等が挙げられるが、地合の均質性を保つためには
パルプを用いることが好ましい。シートに嵩高性や通気
性を付与するためには合成繊維との併用がより望まし
く、両者を適宜混合して配合するのがより好ましい。し
かし、パルプの使用量が多量になると通気抵抗が大きく
なる場合があり、また、合成繊維の混率を増やすとポリ
ビニルアルコール系バインダー繊維との接着性が低下し
て必要な強度が得られにくくなる場合がある。本発明に
用いるパルプは、特に限定されるものではなく、針葉樹
未晒クラフトパルプ（ＮＵＫＰ）、針葉樹晒クラフトパ
ルプ（ＮＢＫＰ）、広葉樹晒クラフトパルプ（ＬＢＫ
Ｐ）、針葉樹晒サルファイトパルプ（ＮＢＳＰ）等の木
材パルプを用いることができる。Further, other fibers may be blended in the wet non-woven fabric, and other fibers to be blended include synthetic fibers and pulp, but in order to maintain the homogeneity of the formation. Preference is given to using pulp. In order to impart bulkiness and air permeability to the sheet, it is more preferable to use it in combination with a synthetic fiber, and it is more preferable to appropriately mix and blend both. However, if the amount of pulp used is large, the ventilation resistance may increase, and if the mixing ratio of the synthetic fibers is increased, the adhesiveness with the polyvinyl alcohol-based binder fiber decreases and it becomes difficult to obtain the required strength. There is. The pulp used in the present invention is not particularly limited, and the unbleached softwood kraft pulp (NUKP), the bleached softwood kraft pulp (NBKP), and the bleached hardwood kraft pulp (LBK).
Wood pulp such as P) and softwood bleached sulfite pulp (NBSP) can be used.

【００１６】該湿式不織布の目付は３０〜６５ｇ／ｍ２
が好ましく、より好ましくは、４０〜６０ｇ／ｍ２であ
る。目付が３０ｇ／ｍ２未満では充分な補強効果と層間
接着効果が得られず、逆に６５ｇ／ｍ２を超えると厚く
なりすぎて最終商品の取扱い性が不便になる場合があ
る。なお、上記メルトブロー不織布の両面に該湿式不織
布を積層する場合は、使用する湿式不織布の合計目付が
上記の範囲となるよう調整すればよい。このような湿式
不織布は、通常の抄紙法により製造することができる。The wet fabric has a basis weight of 30 to 65 g / m 2.
Is preferable, and more preferably 40 to 60 g / m 2 . If the basis weight is less than 30 g / m 2 , sufficient reinforcing effect and interlayer adhesion effect cannot be obtained, and conversely, if it exceeds 65 g / m 2 , the final product may be inconvenient to handle due to excessive thickness. When the wet non-woven fabric is laminated on both sides of the melt-blown non-woven fabric, it may be adjusted so that the total basis weight of the wet non-woven fabric used is within the above range. Such a wet non-woven fabric can be produced by an ordinary papermaking method.

【００１７】本発明では、外袋としてメルトブロー不織
布と湿式不織布が積層されてなる繊維シートを用いる
が、優れた捕集効率確保の観点から、該繊維シートの目
付は３５〜８０ｇ／ｍ２であり、好ましくは４０〜７０
ｇ／ｍ２である。該繊維シートの積層方法は、特に限定
されるものではなく、例えば湿式不織布の抄紙工程中に
おいて用いられる乾燥用フェルトドライヤーのフェルト
面にメルトブロー不織布を導入して、乾燥と積層とを同
時に行うなどの方法は、接着強度も高く工程的にも経済
的であり好ましい手段といえる。いずれにせよ、積層に
より捕集効率の低下や圧力損失の増大をもたらすことな
く強固な接着を行うことが重要である。なお、本発明に
おいてメルトブローの片面に湿式不織布を積層した繊維
シートを用いる場合は、湿式不織布が集塵袋の最外層と
なるよう配置するのが好ましい。In the present invention, a fiber sheet obtained by laminating a melt-blown nonwoven fabric and a wet nonwoven fabric is used as the outer bag. From the viewpoint of ensuring excellent collection efficiency, the fiber sheet has a basis weight of 35 to 80 g / m 2 . , Preferably 40-70
g / m 2 . The method for laminating the fiber sheet is not particularly limited, and for example, by introducing a melt blown nonwoven fabric into the felt surface of a felt dryer for drying used in the papermaking process of a wet nonwoven fabric, drying and laminating at the same time. The method is preferable because it has high adhesive strength and is economical in the process. In any case, it is important to perform strong adhesion without lowering the collection efficiency and increasing the pressure loss due to the lamination. In the present invention, when a fibrous sheet obtained by laminating a wet non-woven fabric on one side of melt blow is used, it is preferable to arrange the wet non-woven fabric as the outermost layer of the dust collecting bag.

【００１８】次に本発明の電気掃除機用集塵袋を構成す
る内袋について説明する。本発明に用いる内袋として
は、通常用いられる濾紙、乾式不織布、湿式不織布等を
用いることができるが、捕集効率と圧力損失のバランス
に優れ、かつ湿潤時の使用においても破袋しにくい点
で、不織布を用いることが好ましい。本発明において内
袋は、主に粒径３０μｍ以上といった比較的粒径の大き
い埃を捕集する役割を果たし、粒径１μｍ以下の極めて
細かい埃は内袋を通過し、外袋にて捕集される。Next, the inner bag constituting the dust collecting bag for the electric vacuum cleaner of the present invention will be described. As the inner bag used in the present invention, commonly used filter paper, dry non-woven fabric, wet non-woven fabric, etc. can be used, but they have an excellent balance of collection efficiency and pressure loss, and are difficult to break even when used in a wet condition. Therefore, it is preferable to use a non-woven fabric. In the present invention, the inner bag mainly plays a role of collecting dust having a relatively large particle size of 30 μm or more, and extremely fine dust having a particle size of 1 μm or less passes through the inner bag and is collected by the outer bag. To be done.

【００１９】特に本発明においては、内袋として、目付
が１０〜５０ｇ／ｍ２、タテおよびヨコ方向における湿
潤強力が１５Ｎ／５ｃｍ以上かつ湿潤伸度が２０％以上
であり、さらに通気度が５０ｃｃ／ｃｍ２・ｓｅｃ以上
である不織布を用いることがより好ましい。かかる不織
布を用いることで、内袋は粒径の大きい埃をより効率よ
く捕集でき、粒径の細かい埃を選択的に外袋へ通過させ
るので、外袋では粒径の細かい埃のみを捕集することが
でき、目詰まりが生じ難い集塵袋を得ることができる。Particularly in the present invention, the inner bag has a basis weight of 10 to 50 g / m 2 , a wet strength of 15 N / 5 cm or more in the vertical and horizontal directions, a wet elongation of 20% or more, and an air permeability of 50 cc. It is more preferable to use a non-woven fabric having a density of / cm 2 · sec or more. By using such a nonwoven fabric, the inner bag can collect dust with a large particle size more efficiently, and the dust with a smaller particle size can be selectively passed to the outer bag, so that the outer bag only collects the dust with a smaller particle size. It is possible to obtain a dust bag that can be collected and is less likely to be clogged.

【００２０】内袋に用いられる不織布を構成する繊維
は、ナイロン、ポリエステル、ポリプロピレン等の熱可
塑性ポリマーからなる繊維を用いることができるが、ヒ
ートシール性に優れる等の理由により、特にポリプロピ
レンが好ましい。本発明に用いられる不織布はスパンボ
ンド不織布が特に好適であるが、カードを用いて製造さ
れるサーマルボンドタイプの乾式不織布も通気度が大き
いので好適に使用される。また、スパンボンド不織布と
メルトブロー不織布とが２層以上に積層されたような素
材も用いることができる。As the fibers constituting the non-woven fabric used for the inner bag, fibers made of thermoplastic polymers such as nylon, polyester and polypropylene can be used, but polypropylene is particularly preferable because of its excellent heat-sealing property. The nonwoven fabric used in the present invention is particularly preferably a spunbonded nonwoven fabric, but a thermal bond type dry nonwoven fabric manufactured by using a card is also suitably used because it has a large air permeability. A material in which a spunbonded nonwoven fabric and a meltblown nonwoven fabric are laminated in two or more layers can also be used.

【００２１】内袋に用いられる不織布の目付は５〜５０
ｇ／ｍ２が好ましく、特に１０〜３０ｇ／ｍ２が好まし
い。目付が５ｇ／ｍ２未満では、捕集効率が悪く、埃に
よる外袋の目詰まりを早めてしまい集塵袋の寿命を損な
うと同時に、湿潤強度が不足して捕捉された水分により
破袋を招く場合がある。一方、目付が５０ｇ／ｍ２を超
えると圧力損失が高くなりすぎて掃除機の吸引力が低下
する場合がある。また、該不織布は、タテおよびヨコ方
向における湿潤強度が１５Ｎ／５ｃｍ以上、破断伸度が
２０％以上である場合に掃除機が埃と水とを同時に吸い
込んだ時などに起こる内袋の濡れによる破袋を防ぐこと
ができる点で好ましい。なお、本発明にいうタテ方向と
は不織布のＭＤ方向であり、ヨコ方向はＣＤ方向を示す
ものである。The basis weight of the non-woven fabric used for the inner bag is 5 to 50.
preferably g / m 2, especially 10 to 30 g / m 2 is preferred. If the basis weight is less than 5 g / m 2 , the collection efficiency is poor, and the outer bag is clogged with dust quickly, which shortens the life of the dust bag and, at the same time, the wet strength is insufficient and the trapped water may break the bag. May be invited. On the other hand, if the basis weight exceeds 50 g / m 2 , the pressure loss may be too high and the suction force of the cleaner may be reduced. Further, the non-woven fabric is due to the wetting of the inner bag which occurs when the cleaner sucks dust and water at the same time when the wet strength in the vertical and horizontal directions is 15 N / 5 cm or more and the breaking elongation is 20% or more. It is preferable in that it can prevent bag breakage. The vertical direction referred to in the present invention is the MD direction of the nonwoven fabric, and the horizontal direction is the CD direction.

【００２２】また、内袋用不織布の通気度は５０ｃｃ／
ｃｍ２・ｓｅｃ以上が好ましく、より好ましくは２００
ｃｃ／ｃｍ２・ｓｅｃ以上である。５０ｃｃ／ｃｍ２・
ｓｅｃ未満の場合は、内袋が早く目詰まりを起こし、掃
除機の使用時間に伴う圧力損失の増大が大きくなる場合
がある。The nonwoven fabric for the inner bag has an air permeability of 50 cc /
cm 2 · sec or more is preferable, and more preferably 200
cc / cm 2 · sec or more. 50 cc / cm 2
If it is less than sec, the inner bag may be clogged quickly, and the increase in pressure loss with the use time of the cleaner may increase.

【００２３】本発明の電気掃除機用集塵袋は、例えば上
記した内袋と外袋を用いて袋本体とし、該袋本体に取り
付け板を設けることで作製することができる。袋本体と
取り付け板には、埃を導入するための導入口が設けられ
ており、これら袋本体と取り付け板の導入口が合致する
ように接着する。取り付け板を構成する素材について
は、特に限定されず、厚紙や合成樹脂を用いることがで
きる。また、本発明の電気掃除機用集塵袋の形状につい
ても特に限定はなく、使用する電気掃除機に応じて適宜
設定すればよい。得られた電気掃除機用集塵袋は、電気
掃除機に装着し使用することができる。The dust collecting bag for an electric vacuum cleaner according to the present invention can be produced, for example, by using the above-mentioned inner bag and outer bag to form a bag body and providing a mounting plate on the bag body. The bag body and the mounting plate are provided with an inlet for introducing dust, and the bag body and the mounting plate are bonded so that the inlets are aligned with each other. The material forming the mounting plate is not particularly limited, and cardboard or synthetic resin can be used. The shape of the dust bag for the electric vacuum cleaner of the present invention is not particularly limited, and may be set as appropriate according to the electric vacuum cleaner to be used. The obtained dust bag for an electric vacuum cleaner can be attached to an electric vacuum cleaner and used.

【００２４】[0024]

【実施例】以下、実施例により本発明をさらに具体的に
説明するが、本発明はこれら実施例に何ら限定されるも
のではない。なお、実施例における各物性値は以下の方
法により測定したものである。 １．圧力損失、捕集効率 ａ）粒径の大きい埃の捕集効率 ＪＩＳ Ｃ９１０８−１９９２に示された吸引仕事率測
定装置用いて測定を行った。電気掃除機として市販の電
気掃除機（松下電器産業社製：ＭＣ−Ｓ６２Ｐ）を用
い、高速風速を適用して吸引を行って測定した。小麦粉
（平均粒径６５μｍ）３０ｇを上記測定装置に投入した
後における集塵袋の風上と風下との圧力差を圧力損失と
した。また捕集効率（％）は小麦粉３０ｇを投入した
後、以下のようにして求めた。 捕集効率（％）＝［捕集前後の集塵袋の質量増加（ｇ）
／３０（ｇ）］×１００ ｂ）粒径の細かい埃の捕集効率 柴田科学社製マスク性能試験装置ＡＰ−９０００型を用
い、次の条件により内袋を上流側とし吸気抵抗が５００
Ｐａになった時点での集塵袋に堆積したＮａＣｌ量（ｍ
ｇ）とその時の捕集効率を試験装置に表示された値を読
み取り、求めた。 ＮａＣｌ粒径：平均粒径０．１μｍ 流量：３０Ｌ／ｍｉｎThe present invention will be described in more detail with reference to the following examples, but the present invention is not limited to these examples. In addition, each physical-property value in an Example is measured by the following method. 1. Pressure loss, collection efficiency a) Collection efficiency of dust with a large particle size Measurement was performed using a suction power measurement device described in JIS C9108-1992. As a vacuum cleaner, a commercially available vacuum cleaner (MC-S62P manufactured by Matsushita Electric Industrial Co., Ltd.) was used, and high-speed wind speed was applied to perform suction and measurement was performed. The pressure difference was defined as the pressure difference between the windward and leeward of the dust bag after 30 g of wheat flour (average particle size 65 μm) was charged into the measuring device. The collection efficiency (%) was determined as follows after adding 30 g of wheat flour. Collection efficiency (%) = [mass increase of dust bag before and after collection (g)
/ 30 (g)] × 100 b) Collection efficiency of fine dust particles Using a mask performance tester AP-9000 manufactured by Shibata Scientific Co., Ltd., the inner bag is set to the upstream side and the intake resistance is 500 according to the following conditions.
The amount of NaCl accumulated in the dust bag at the time of reaching Pa (m
g) and the collection efficiency at that time were obtained by reading the value displayed on the test device. NaCl particle size: average particle size 0.1 μm Flow rate: 30 L / min

【００２５】２．強度 ＪＩＳ Ｌ１９０６に準じて測定した。なお、測定は湿
潤時について測定した。2. Strength Measured according to JIS L1906. The measurement was performed when wet.

【００２６】３．伸度 ＪＩＳ Ｌ１９０６に準じて測定した。なお、測定は湿
潤時について測定した。3. Elongation measured according to JIS L1906. The measurement was performed when wet.

【００２７】４．通気度 ＪＩＳ Ｌ１０９６ Ａ法（フラジール形法）に準じて
測定した。 ５．破裂強度 ＪＩＳ Ｌ１０９６ Ａ法（ミューレン形法）に準じて
測定した。なお、測定は乾燥時（標準状態）と湿潤時に
ついて測定した。 ６．繊維径 走査型電子顕微鏡（ＳＥＭ）を用いて不織布の表面を１
０００倍に拡大した写真を撮影し、不織布を構成する繊
維１００本の平均値を求め、繊維径とした。4. Air permeability Measured according to JIS L1096 A method (Fragille type method). 5. Bursting strength Measured according to JIS L1096 A method (Mullen type method). In addition, the measurement was carried out at the time of dry (standard state) and at the time of wet. 6. Using a fiber diameter scanning electron microscope (SEM), 1
A photograph magnified 000 times was taken, and the average value of 100 fibers forming the nonwoven fabric was determined and used as the fiber diameter.

【００２８】実施例１ 外袋用にポリビニルアルコール系主体繊維（クラレ社製
ＶＰＢ１０３、１．１ｄｔｅｘ、カット長３ｍｍ）を６
０％、ポリビニルアルコール系バインダー繊維（クラレ
社製ＶＰＢ１０１、１．７ｄｔｅｘ、カット長４ｍｍ）
を１２％、ポリプロピレン繊維（チッソ社製、２．２ｄ
ｔｅｘ、カット長３ｍｍ）８％およびパルプＮＢＫＰ２
０％を原料として、通常の抄紙法で目付２０ｇ／ｍ２の
湿式不織布を製造した。一方、メルトインデックス（Ｊ
ＩＳ Ｋ ６７５８準拠；２３０℃、２．１６ｋｇ荷
重）が６００ｇ／１０分であるポリプロピレン樹脂を用
いて、通常の方法により目付７ｇ／ｍ２のメルトブロー
不織布を得た。この不織布を構成する繊維の平均繊維径
は電子顕微鏡による写真から判定して２．８μｍであっ
た。なお、湿式不織布の抄紙工程中におけるフエルトド
ライヤーでの乾燥時に、フエルト面にメルトブロー不織
布を導入して同時に積層し繊維シートとした。さらに得
られた繊維シートを再度フエルトドライヤーに導入し、
別ロールに巻取っておいた湿式不織布をメルトブロー不
織布面にあわせて積層一体化し、メルトブロー不織布を
中間層とし両側に湿式不織布（合計目付４０ｇ／ｍ２）
が配置されてなる目付４７ｇ／ｍ２の３層構造を有する
外袋用繊維シートを得た。得られた繊維シートの積層強
度はきわめて強固であり、破裂強度３５３ｋＰａ、湿潤
時における破裂強度は１１８ｋＰａを示し、全く層剥離
が見られなかった。また、目付１７ｇ／ｍ２を有するポ
リプロピレンスパンボンド不織布を用いて内袋を製造し
た。このスパンボンド不織布はタテおよびヨコ湿潤強度
がそれぞれ４２Ｎ／５ｃｍ、２２Ｎ／５ｃｍであり湿潤
伸度はタテ方向５０％、ヨコ方向５５％であり、厚みは
０．１９ｍｍであった。Example 1 Polyvinyl alcohol-based main fiber (VPB103, 1.1 dtex, cut length 3 mm, manufactured by Kuraray Co., Ltd.) 6 was used as an outer bag.
0%, polyvinyl alcohol binder fiber (Kuraray VPB101, 1.7 dtex, cut length 4 mm)
12%, polypropylene fiber (manufactured by Chisso Co., 2.2d
tex, cut length 3 mm) 8% and pulp NBKP2
Using 0% as a raw material, a wet nonwoven fabric having a basis weight of 20 g / m 2 was produced by an ordinary papermaking method. On the other hand, the melt index (J
A melt blown non-woven fabric having a basis weight of 7 g / m 2 was obtained by a usual method using a polypropylene resin having an IS K 6758 standard; 230 ° C., 2.16 kg load) of 600 g / 10 minutes. The average fiber diameter of the fibers constituting this nonwoven fabric was 2.8 μm as judged from the photograph taken with an electron microscope. When the wet non-woven fabric was dried by a felt drier during the papermaking process, a melt blown non-woven fabric was introduced into the felt surface and laminated simultaneously to form a fibrous sheet. Furthermore, the fiber sheet obtained was again introduced into the felt dryer,
Wet non-woven fabric that has been wound up on a separate roll is laminated and integrated according to the melt-blown non-woven fabric surface, and the melt-blown non-woven fabric is used as an intermediate layer on both sides of the wet non-woven fabric (total basis weight 40 g / m 2 ).
Was obtained to obtain a fiber sheet for outer bag having a three-layer structure having a basis weight of 47 g / m 2 . The laminated strength of the obtained fiber sheet was extremely strong, the burst strength was 353 kPa, the burst strength when wet was 118 kPa, and no delamination was observed. Also, an inner bag was manufactured using a polypropylene spunbonded nonwoven fabric having a basis weight of 17 g / m 2 . This spunbonded nonwoven fabric had vertical and horizontal wet strengths of 42 N / 5 cm and 22 N / 5 cm, respectively, and a wet elongation of 50% in the vertical direction and 55% in the horizontal direction, and a thickness of 0.19 mm.

【００２９】得られた内袋および外袋を重ね、４７ｃｍ
巾にスリットした。次に、外袋の外側となる部分に直径
５ｃｍの開口部（塵導入口）を設け、流れ方向に両サイ
ドから折り目（ガゼット）を入れ、流れ方向の製品巾を
１２ｃｍとした。この時、熱シールによって背ばりを行
った。続いて流れ方向の長さが３１ｃｍとなるようにカ
ットし、生産の流れを直角方向に変更し、両サイドの開
口部に２ｃｍの折りしろをつけて熱シールした。さらに
上記塵導入口に、ガイド、切り欠き、ウレタン製パッキ
ンを有する口紙（１１ｃｍ×１２．５ｃｍ、厚さ２ｍ
ｍ）をとりつけ、電気掃除機用集塵袋を得た。結果を表
１および表２に示す。The inner bag and the outer bag thus obtained are piled up to 47 cm
Slit into the width. Next, an opening (dust inlet) having a diameter of 5 cm was provided in a portion on the outer side of the outer bag, and folds (gazettes) were inserted from both sides in the flow direction to make the product width in the flow direction 12 cm. At this time, the backing was performed by heat sealing. Subsequently, it was cut so that the length in the flow direction was 31 cm, the production flow was changed to the right angle direction, and a 2 cm folding margin was attached to the openings on both sides to perform heat sealing. Further, a paper mouthpiece (11 cm × 12.5 cm, thickness 2 m) having a guide, a notch, and a urethane packing at the dust introduction port.
m) was attached to obtain a dust bag for an electric vacuum cleaner. The results are shown in Tables 1 and 2.

【００３０】実施例２ 外袋用にポリビニルアルコール系主体繊維（クラレ社製
ＶＰＢ１０３、１．１ｄｔｅｘ、カット長３ｍｍ）７０
％、ポリビニルアルコール系バインダー繊維（クラレ社
製ＶＰＢ１０１、１．７ｄｔｅｘ、カット長４ｍｍ）１
５％、およびパルプＮＢＫＰ１５％からなる目付２２ｇ
／ｍ２の湿式不織布を製造した。また、実施例１と同様
にして目付５ｇ／ｍ２のポリプロピレンメルトブロー不
織布を準備した。実施例１と同様の積層方法で、メルト
ブロー不織布の両側に上記湿式不織布が配置されてなる
目付４９ｇ／ｍ２の繊維シートを得た。得られた繊維シ
ートの破裂強度は３２４ｋＰａ、湿潤時の破裂強度は１
０３ｋＰａであった。一方、内袋用として、繊維径５．
５μｍ、目付４ｇ／ｍ２のポリプロピレンメルトブロー
不織布の両面に、目付５ｇ／ｍ２のポリプロピレンスパ
ンボンド不織布を積層し、エンボス加工（エンボス面積
率７％）を施して複合化した合計目付１４ｇ／ｍ２の積
層不織布を用いた。この積層不織布の湿潤強度はタテ、
ヨコ方向それぞれ３５Ｎ／５ｃｍ、１８Ｎ／５ｃｍであ
り、湿潤伸度はタテ、ヨコ方向それぞれ４０％および５
２％であった。（表１、表２）Example 2 Polyvinyl alcohol-based main fiber (VPB103, 1.1 dtex, cut length 3 mm, manufactured by Kuraray Co., Ltd.) 70 for an outer bag
%, Polyvinyl alcohol-based binder fiber (VPB101 manufactured by Kuraray Co., Ltd., 1.7 dtex, cut length 4 mm) 1
22g basis weight consisting of 5% and pulp NBKP 15%
/ M 2 Wet non-woven fabric was produced. A polypropylene meltblown nonwoven fabric having a basis weight of 5 g / m 2 was prepared in the same manner as in Example 1. By the same laminating method as in Example 1, a fiber sheet having a basis weight of 49 g / m 2 was obtained in which the wet nonwoven fabric was placed on both sides of the meltblown nonwoven fabric. The burst strength of the obtained fiber sheet is 324 kPa, and the burst strength when wet is 1
It was 03 kPa. On the other hand, for the inner bag, the fiber diameter is 5.
A total fabric weight of 14 g / m 2 obtained by laminating polypropylene spunbonded nonwoven fabric having a basis weight of 5 g / m 2 on both sides of a polypropylene melt blown nonwoven fabric having a basis weight of 5 μm and a basis weight of 4 g / m 2 and embossing (embossing area ratio 7%) to form a composite. Was used. The wet strength of this laminated nonwoven fabric is vertical,
35 N / 5 cm and 18 N / 5 cm in the horizontal direction, respectively, and the wet elongations are 40% and 5 in the vertical and horizontal directions, respectively.
It was 2%. (Table 1, Table 2)

【００３１】実施例３ 外袋用にポリビニルアルコール系主体繊維（クラレ社製
ＶＰＢ１０３、１．１ｄｔｅｘ、カット長３ｍｍ）６５
％、ポリビニルアルコール系バインダー繊維（クラレ社
製ＶＰＢ１０１、１．７ｄｔｅｘ、カット長４ｍｍ）１
０％、ポリエステル繊維（２．８ｄｔｅｘ、カット長３
ｍｍ）１２％およびパルプＮＢＫＰ１３％からなる目付
５０ｇ／ｍ２の湿式不織布を製造した。一方、実施例１
と同様にして目付６ｇ／ｍ２のポリプロピレンメルトブ
ロー不織布を準備し、実施例１と同様な方法で目付４１
ｇ／ｍ２の２層構造の繊維シートを得た。内袋には実施
例１と同じポリプロピレンスパンボンド不織布を用いて
集塵袋を得た。（表１、表２）Example 3 Polyvinyl alcohol-based main fiber (VPB103, Kuraray Co., 1.1 dtex, cut length 3 mm) 65 for outer bag
%, Polyvinyl alcohol-based binder fiber (VPB101 manufactured by Kuraray Co., Ltd., 1.7 dtex, cut length 4 mm) 1
0%, polyester fiber (2.8 dtex, cut length 3)
mm) 12% and pulp NBKP 13%, and a wet fabric having a basis weight of 50 g / m 2 was produced. On the other hand, Example 1
A polypropylene meltblown non-woven fabric having a basis weight of 6 g / m 2 was prepared in the same manner as described in 1.
A fiber sheet having a two-layer structure of g / m 2 was obtained. The same polypropylene spunbonded nonwoven fabric as in Example 1 was used as the inner bag to obtain a dust bag. (Table 1, Table 2)

【００３２】比較例１ 内袋用にパルプＮＢＫＰ７０％、ポリエステル繊維
（１．７ｄｔｅｘ、カット長３ｍｍ）２４％およびポリ
ビニルアルコール系バインダー繊維（クラレ社製ＶＰＢ
１０１、１．７ｄｔｅｘ、カット長４ｍｍ）６％からな
る目付２０ｇ／ｍ２の湿式不織布を用い、外袋用にパル
プＮＢＫＰ６５％、ポリプロピレン繊維（１．７ｄｔｅ
ｘ、カット長３ｍｍ）２８％、ポリビニルアルコール系
バインダー繊維（クラレ社製ＶＰＢ１０１、１．７ｄｔ
ｅｘ、カット長４ｍｍ）７％からなる目付４８ｇ／ｍ２
の湿式不織布を用いて集塵袋を得た。（表１、表２）Comparative Example 1 For inner bag, 70% pulp NBKP, 24% polyester fiber (1.7 dtex, cut length 3 mm) and polyvinyl alcohol binder fiber (VPB manufactured by Kuraray Co., Ltd.)
101, 1.7 dtex, cut length 4 mm) 6%, using a wet non-woven fabric with a basis weight of 20 g / m 2 , pulp NBKP 65% and polypropylene fiber (1.7 dte) for the outer bag.
x, cut length 3 mm) 28%, polyvinyl alcohol binder fiber (Kuraray VPB101, 1.7 dt)
ex, cut length 4mm) 7% basis weight 48g / m 2
A wet bag was used to obtain a dust bag. (Table 1, Table 2)

【００３３】比較例２ 実施例１と同様のポリプロピレン樹脂を用いて、通常の
方法により目付１０ｇ／ｍ２のメルトブローン不織布を
得た。一方、パルプ５５％、ポリオレフィン系熱融着複
合繊維（チッソ社製「ＥＡファイバー」）３９％および
ポリビニルアルコール系繊維（クラレ社製ＶＰＢ１０
１、１．７ｄｔｅｘ、カット長４ｍｍ）６％を原料とし
て、通常の抄紙法で目付２５ｇ／ｍ２の湿式不織布を得
た。ついで、この湿式不織布を得られたメルトブローン
不織布の両面に配置し、１２０℃で熱プレスして三層を
一体化した。得られた積層繊維シートを外袋として用
い、比較例１で使用した内袋を用いたこと以外は実施例
１と同様にして電気掃除機用集塵袋を得た。（表１、表
２）Comparative Example 2 Using the same polypropylene resin as in Example 1, a melt blown nonwoven fabric having a basis weight of 10 g / m 2 was obtained by a usual method. On the other hand, 55% of pulp, 39% of polyolefin-based heat fusion composite fiber (“EA fiber” manufactured by Chisso Co.) and polyvinyl alcohol fiber (VPB10 manufactured by Kuraray Co., Ltd.)
A wet non-woven fabric having a basis weight of 25 g / m 2 was obtained by an ordinary papermaking method using 1, 1.7 dtex and a cut length of 4 mm) 6% as a raw material. Then, the wet-laid nonwoven fabric was placed on both sides of the obtained melt-blown nonwoven fabric and heat-pressed at 120 ° C. to integrate the three layers. A dust collecting bag for an electric vacuum cleaner was obtained in the same manner as in Example 1 except that the obtained laminated fiber sheet was used as an outer bag and the inner bag used in Comparative Example 1 was used. (Table 1, Table 2)

【００３４】[0034]

【表１】 [Table 1]

【００３５】[0035]

【表２】 [Table 2]

【００３６】本発明の掃除機用集塵袋は、圧力損失と捕
集効率のバランスに優れ、かつ粒径の細かい埃も効率よ
く吸塵可能であった。また、直径９ｃｍ、深さ２ｃｍの
灰皿にタバコの吸殻３本と水５０ｃｃを加え、上記実施
例および比較例の集塵袋を備えた電気掃除機より吸引試
験を行った。各例についてそれぞれ１０枚ずつ試験を行
ったところ、本発明の集塵袋を用いた場合はいずれも破
袋は生じなかった。しかし、比較例１の集塵袋を用いた
場合には１０袋のうち４袋について、内袋および外袋の
破袋が見られ、比較例２の集塵袋を用いた場合には１０
袋のうち４袋について、内袋の破袋が見られた。The dust collecting bag for a vacuum cleaner of the present invention has an excellent balance between pressure loss and collection efficiency, and is capable of efficiently absorbing dust with a fine particle size. Further, three cigarette butts and 50 cc of water were added to an ashtray having a diameter of 9 cm and a depth of 2 cm, and a suction test was conducted using an electric vacuum cleaner equipped with the dust collecting bags of the above-mentioned Examples and Comparative Examples. When 10 sheets were tested for each example, no bag breakage occurred when the dust bag of the present invention was used. However, when the dust bag of Comparative Example 1 was used, the inner bag and the outer bag were broken in 4 out of 10 bags, and when the dust bag of Comparative Example 2 was used, 10 bags were broken.
The inner bag was broken in four of the bags.

【００３７】[0037]

【発明の効果】本発明の掃除機用集塵袋は、接着強度が
十分なため使用中または成型加工中に層剥離する恐れが
ない上に、圧力損失及び捕集効率のバランスに優れてい
るので、電気掃除機用集塵袋として高性能のものであ
り、かつ安価に消費者に提供できる。また、本発明の電
気掃除機用集塵袋は、粒径の極めて細かい埃も効率よく
捕集でき、目詰まりの生じ難いものである。EFFECTS OF THE INVENTION The dust bag for a vacuum cleaner of the present invention has sufficient adhesive strength so that there is no risk of delamination during use or molding, and it has an excellent balance of pressure loss and collection efficiency. Therefore, it is a high performance dust collecting bag for an electric vacuum cleaner and can be provided to consumers at low cost. In addition, the dust bag for the electric vacuum cleaner of the present invention can efficiently collect dust having a very small particle size, and is unlikely to cause clogging.

Claims (3)

【特許請求の範囲】[Claims] 【請求項１】 内袋と外袋とを有する電気掃除機用集塵
袋であって、外袋が、繊維径１０μｍ以下の繊維から構
成されるメルトブロー不織布とその片面または両面にポ
リビニルアルコール系繊維を４０％以上含む湿式不織布
を積層一体化してなる目付が３５〜８０ｇ／ｍ２の繊維
シートからなる電気掃除機用集塵袋。1. A dust collection bag for an electric vacuum cleaner having an inner bag and an outer bag, wherein the outer bag is a melt-blown nonwoven fabric composed of fibers having a fiber diameter of 10 μm or less and polyvinyl alcohol-based fibers on one or both sides thereof. A dust collecting bag for an electric vacuum cleaner, which is made of a fiber sheet having a basis weight of 35 to 80 g / m 2 which is obtained by laminating and integrating a wet non-woven fabric containing 40% or more of. 【請求項２】 該湿式不織布がポリビニルアルコール系
バインダー繊維を７〜２０％、ポリビニルアルコール系
主体繊維を３０〜８０％含む湿式不織布である請求項１
記載の電気掃除機用集塵袋。2. The wet non-woven fabric is a wet non-woven fabric containing 7 to 20% of polyvinyl alcohol-based binder fibers and 30 to 80% of polyvinyl alcohol-based main fibers.
Dust collection bag for the vacuum cleaner described. 【請求項３】 内袋が、目付１０〜５０ｇ／ｍ２、タテ
およびヨコ方向における湿潤強力が１５Ｎ／５ｃｍ以
上、湿潤伸度が２０％以上であり、通気度が５０ｃｃ／
ｃｍ２・ｓｅｃ以上の不織布からなる請求項１または２
に記載の電気掃除機用集塵袋。3. The inner bag has a basis weight of 10 to 50 g / m 2 , a wet strength in the vertical and horizontal directions of 15 N / 5 cm or more, a wet elongation of 20% or more, and an air permeability of 50 cc /
A non-woven fabric having a size of cm 2 · sec or more.
The dust collection bag for the electric vacuum cleaner described in.
JP2002326209A 2002-02-19 2002-11-11 Dust bag for vacuum cleaner Expired - Fee Related JP3665314B2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP2002326209A JP3665314B2 (en) 2002-02-19 2002-11-11 Dust bag for vacuum cleaner
TW092102814A TW200303185A (en) 2002-02-19 2003-02-12 Filter bag for a vacuum cleaner
KR10-2003-0009127A KR100491827B1 (en) 2002-02-19 2003-02-13 Filter bag for a vacuum cleaner
CN03106147A CN1439328A (en) 2002-02-19 2003-02-19 Dust-collecting bags for electric dust cleaners

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2002041381 2002-02-19
JP2002-41381 2002-02-19
JP2002326209A JP3665314B2 (en) 2002-02-19 2002-11-11 Dust bag for vacuum cleaner

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JP3665314B2 JP3665314B2 (en) 2005-06-29

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007260623A (en) * 2006-03-29 2007-10-11 Toyota Boshoku Corp Method of manufacturing filter element

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE396638T1 (en) * 2005-11-22 2008-06-15 Eurofilters Holding Nv VACUUM CLEANER FILTER BAG WITH DEFLECTION DEVICE
JP5489084B2 (en) * 2011-08-12 2014-05-14 Ｊｎｃ株式会社 Mixed fiber non-woven fabric
CN108162544A (en) * 2016-12-07 2018-06-15 东丽纤维研究所（中国）有限公司 Non-woven fabrics and its manufacturing method and purposes are taken in a kind of protection
CN110039839B (en) * 2018-01-16 2023-09-01 东丽纤维研究所（中国）有限公司 Laminated non-woven fabric for protective clothing and manufacturing method and application thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007260623A (en) * 2006-03-29 2007-10-11 Toyota Boshoku Corp Method of manufacturing filter element
JP4736898B2 (en) * 2006-03-29 2011-07-27 トヨタ紡織株式会社 Manufacturing method of filter element

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KR20030069075A (en) 2003-08-25
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TW200303185A (en) 2003-09-01
CN1439328A (en) 2003-09-03

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