JPS644810B2 - - Google Patents
Info
- Publication number
- JPS644810B2 JPS644810B2 JP12159079A JP12159079A JPS644810B2 JP S644810 B2 JPS644810 B2 JP S644810B2 JP 12159079 A JP12159079 A JP 12159079A JP 12159079 A JP12159079 A JP 12159079A JP S644810 B2 JPS644810 B2 JP S644810B2
- Authority
- JP
- Japan
- Prior art keywords
- heat
- fusible
- filter material
- film
- filter
- 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.)
- Expired
Links
- 239000000463 material Substances 0.000 claims description 41
- 229920005989 resin Polymers 0.000 claims description 13
- 239000011347 resin Substances 0.000 claims description 13
- 239000000835 fiber Substances 0.000 claims description 9
- 238000004378 air conditioning Methods 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 239000004745 nonwoven fabric Substances 0.000 claims description 5
- 239000002313 adhesive film Substances 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims description 2
- 229920003002 synthetic resin Polymers 0.000 description 16
- 239000000057 synthetic resin Substances 0.000 description 16
- 230000010354 integration Effects 0.000 description 7
- 239000005038 ethylene vinyl acetate Substances 0.000 description 6
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 6
- 239000000853 adhesive Substances 0.000 description 5
- 230000001070 adhesive effect Effects 0.000 description 5
- 239000000470 constituent Substances 0.000 description 4
- 239000005028 tinplate Substances 0.000 description 4
- 239000011230 binding agent Substances 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 238000003892 spreading Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- -1 allylic acid ester Chemical class 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229920006122 polyamide resin Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
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
- B01D39/14—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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
- Filtering Materials (AREA)
Description
【発明の詳細な説明】
本発明は冷暖房やエアの給排等、空調のための
ダクト開口部に装着する空調用フイルタであつて
しかも折りたたみ可能な空調用フイルタの製造方
法に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing an air conditioning filter that is attached to the opening of a duct for air conditioning, air supply and discharge, etc., and is foldable.
室内の空調のためのダクト開口部には集塵フイ
ルタが装着されているが、当然のことながらこの
集塵フイルタはある期間使用すれば塵芥が付着す
るため一定期間ごとにフイルタを交換しなければ
ならない。一般にダクト開口部に装着するフイル
タ（以下ダクトフイルタと呼ぶ）は数枚に折りた
たまれ、いわゆるプリーツ状に形成されたフイル
タ材をブリキ板等でできた枠に固定したものであ
り、この様な枠付きのダクトフイルタが装着され
ている。ダクトフイルタには塵芥の付着がかなり
はげしくダクトフイルタの交換はかなり頻度で行
なわなければならない。ところで一般のダクトフ
イルタは上述のごとくブリキ板等でできた枠付き
のものであるため、嵩高でありその取扱いはきわ
めて煩わしく、ダクト開口部への装着には手間と
時間とを要し装着作業上問題がある。又嵩高であ
ることのために予備用のダクトフイルタの保管に
かなりのスペースを要すると共にその輸送に際し
ては、仮にトラツク１台で１回に運ぶことのでき
る数量が少く、したがつてダクトフイルタ価格に
占める輸送コストの割合が高く物流面での欠陥も
大きい。さらにブリキ板等の枠分だけコスト高に
なると共に、枠の存在のために使用済ダクトフイ
ルタの廃棄処分が困難であるという欠陥がある。 Dust filters are installed at the openings of ducts for indoor air conditioning, but of course dust collects on these filters after they are used for a certain period of time, so the filters must be replaced at regular intervals. No. In general, filters that are attached to duct openings (hereinafter referred to as duct filters) are folded into several pieces of so-called pleated filter material that are fixed to a frame made of a tin plate or the like. A duct filter is installed. The duct filter is heavily contaminated with dust, and the duct filter must be replaced quite frequently. By the way, as mentioned above, general duct filters have a frame made of tin plate or the like, so they are bulky and extremely cumbersome to handle, and it takes time and effort to install them into the duct opening, making it difficult to install them. There's a problem. In addition, due to their bulk, it takes a considerable amount of space to store spare duct filters, and when transporting them, the quantity that can be transported at one time by one truck is small, which reduces the price of duct filters. Transportation costs account for a high proportion, and there are also major deficiencies in logistics. Furthermore, the cost is increased by the amount of the frame made of tin plate, etc., and the existence of the frame makes it difficult to dispose of the used duct filter.
又このような従来のダクトフイルタは、プリー
ツ状に形成されたフイルタ材をブリキ板等ででき
た枠内にポリ塩化ビニルペースト等をもつて接着
固定して、製造されるため製造工程が煩雑であ
る。 In addition, such conventional duct filters are manufactured by adhesively fixing the pleated filter material within a frame made of tin plate or the like using polyvinyl chloride paste, etc., so the manufacturing process is complicated. be.
ところで、近年ダクト開口部への装着作業の省
力化、ダクトフイルタの保管スペースの縮少、輸
送コストの低減製造コストの低減のため、及び廃
棄処分を容易にするためにブリキ等の枠をなくし
た改良ダクトフイルタが提供されている。第１図
に示すごとくこの枠のない改良ダクトフイルタ１
は多数の折り目４４′…，５，５′…をもつてプリ
ーツ状に折曲形成されたフイルタ材２の両折曲縁
端７，７′…，８，８′…に柔軟な合成樹脂フイル
ム６を接着剤で接着したものであつて、この合成
樹脂フイルム６によつてプリーツの折り目間隔
３，３′…の保持とダクトフイルタとしての立体
性保持とがなされ、しかも使用しないときにはこ
れを折りたたむことができ、保管スペースの縮
少、輸送コストの低減を計ると共に廃棄処分を容
易ならしめたものである。第２図はこの改良ダク
トフイルタ１をダクト開口部９に装着した状態を
示すものであり、装着状態においてプリーツの折
り目間隔３，３′…が合成樹脂フイルム６によつ
て保持されているものである。 Incidentally, in recent years, tin frames have been eliminated in order to save labor in installing duct filters into duct openings, reduce storage space for duct filters, reduce transportation costs, reduce manufacturing costs, and to facilitate disposal. An improved duct filter is provided. Improved duct filter 1 without this frame as shown in Figure 1
A flexible synthetic resin film is attached to both bent edges 7, 7', 8, 8' of the filter material 2, which is folded into a pleat shape with a large number of folds 44', 5, 5',... This synthetic resin film 6 maintains the fold interval 3, 3'... of the pleats and maintains the three-dimensionality as a duct filter, and is folded when not in use. This reduces storage space, reduces transportation costs, and facilitates disposal. FIG. 2 shows the improved duct filter 1 installed in the duct opening 9. In the installed state, the crease intervals 3, 3', etc. of the pleats are maintained by the synthetic resin film 6. be.
叙上のごとく、フイルタ材と合成樹脂フイルム
とを一体化した構造の改良ダクトフイルタがすで
に一般化されているが、この場合フイルタ材と合
成樹脂フイルムとの一体化は、フイルタ材のプリ
ーツ状折曲縁端が合成樹脂フイルム面に接着剤を
介して接着された線接着によつてなされているた
め、その一体化力（接着力）が弱く取り扱い中
（輸送、ダクト開口部への接着）において剥れ易
く、したがつてこの一体化不良はプリーツの折り
目間隔保持及びダクトフイルタとしての主体性保
持という役割を果たす上での障害となつている。
又、フイルタ材のプリーツ状折曲縁端と合成樹脂
フイルタ面との接着に際してはフイルタ材を押し
つぶす恐れがあるため、あまり強く加圧すること
ができず、したがつて加圧によつても一体化力
（接着力）の向上は計れない。本発明者は叙上の
ごとき改良ダクトフイルタにおけるフイルタ材と
合成樹脂フイルムとの一体化不良を改良すべく鋭
意研究の結果、一体化力の向上に成功したもので
ある。 As mentioned above, improved duct filters with a structure in which the filter material and the synthetic resin film are integrated have already become common, but in this case, the integration of the filter material and the synthetic resin film is achieved by folding the filter material into pleats. Because the curved edges are bonded to the synthetic resin film surface using an adhesive, the unifying force (adhesive force) is weak and may be difficult to handle during handling (transportation, adhesion to duct openings). It is easy to peel off, and therefore, this poor integration becomes an obstacle in maintaining the crease interval of the pleats and maintaining the integrity of the duct filter.
In addition, when adhering the pleated bent edge of the filter material to the synthetic resin filter surface, it is not possible to apply too much pressure because there is a risk of crushing the filter material, so even if pressure is applied, it will not be possible to bond the synthetic resin filter surface to the synthetic resin filter surface. The improvement in strength (adhesive strength) cannot be measured. The present inventor has conducted intensive research to improve the poor integration between the filter material and the synthetic resin film in the improved duct filter as described above, and has succeeded in improving the integration force.
本発明は、多数の折り目をもつてプリーツ状に
折曲形成したフイルタ材の両折曲縁端にプリーツ
の適当な折り目間隔を保つた状態で熱融着性フイ
ルムを熱融着せしめるに際して、あらかじめ加熱
した熱融着性フイルムをフイルタ材の折曲縁端上
に広げ置くか、あるいは未加熱状態の熱融着性フ
イルムをフイルタ材の折曲縁端上に広げ置き、し
かる後に加熱するかして次いで熱融着性フイルム
面上から常温もしくは冷温で軽く加圧し熱融着性
フイルムが冷却した後、除圧することを特徴とす
る折りたたみ可能な空調用フイルタの製造方法に
関するものである。 The present invention provides a method for heat-sealing a heat-fusible film to both folded edges of a filter material that is folded into a pleat shape with a large number of folds while maintaining an appropriate crease interval between the pleats. Either a heated heat-fusible film is spread on the folded edge of the filter material, or an unheated heat-fusible film is spread on the folded edge of the filter material and then heated. The present invention relates to a method for manufacturing a foldable air conditioning filter, characterized in that the heat-fusible film is then lightly pressurized from the surface at room temperature or cold temperature, and after the heat-fusible film has cooled, the pressure is removed.
本発明は熱融着性フイルムの使用及び当該熱融
着性フイルムとフイルタ材の折曲縁端との一体化
操作（接着操作）の改良という２点の相乗効果に
よつて、フイルタ材と合成樹脂フイルムとの一体
化力を向上せしめることに成功したものである。
すなわち、本発明は柔軟な合成樹脂フイルムとし
て熱融着性フイルムを限定使用することによつて
合成樹脂フイルム自体、すなわち熱融着性フイル
ム自体にフイルタ材の折曲縁端を埋め込むがごと
き状態で融着性フイルムとフイルタ材とを一体化
するものであるため、その一体化力は単に接着剤
を介しての一体化に比べてきわめて強いものであ
る。 The present invention utilizes a synergistic effect of two points: the use of a heat-fusible film and an improvement in the operation of integrating the heat-fusible film and the bent edge of the filter material (adhesive operation). This has succeeded in improving the ability to integrate with the resin film.
That is, the present invention makes limited use of a heat-fusible film as a flexible synthetic resin film, so that the bent edge of the filter material is embedded in the synthetic resin film itself, that is, the heat-fusible film itself. Since it integrates the fusible film and the filter material, its unifying force is much stronger than simply integrating with an adhesive.
本発明においては合成樹脂フイルムとしてただ
単に熱融着性フイルムを限定使用するだけで、上
記のごとき強い一体化状態が得られるのではなく
独自の一体化操作を施すことによつてはじめてこ
の強力な一体化状態が得られるのである。すなわ
ち熱融着性フイルムをあらかじめ加熱し融着可能
な状態となし、この状態が保たれている間にフイ
ルタ材の折曲縁端上に広げ置くかあるいは未加熱
の状態でフイルタ材の折曲縁端上に広げ置きしか
る後加熱して熱融着性フイルムを融着可能な状態
となし、次いで常温下又は冷温下においてフイル
タ材が押しつぶされない程度に軽く加圧し熱融着
性フイルムが冷却してから、除圧するという一体
化操作が施されることによつて強力な一体化状態
が得られるのである。すでに述べたごとく、フイ
ルタ材と合成樹脂フイルムとの一体化操作に際し
ては、フイルタ材がつぶれる恐れがあるためほと
んど加圧することができないのであるがかといつ
てただ単に加熱状態の熱融着性フイルムをフイル
タ材の折曲縁端上に広げ置くのみではいわゆる一
体化が完全には進められ得ず、やはりある程度の
加圧が必要である。しかし本発明における軽加圧
は単にフイルタ材への熱融着性フイルムの押しつ
けという目的のみでなく、加熱溶融状態にある熱
融着性フイルムの冷却固化という目的をも果たす
ものである。すなわち単に前者の目的のみなら
ず、除圧の時期を特に限定する必要はなく、熱融
着性フイルムがいまだ余熱状態において除圧して
も前者の目的は達成し得るのである。本発明の加
圧では熱融着性フイルムの冷却固化という重要な
目的をも達成せしめるものであるため、その除圧
の時点を熱融着性フイルムが冷却して後に限定す
るものである。熱融着性フイルムがいまだ余熱状
態において除圧した場合には、その後においてフ
イルタ材の折曲縁端からの熱融着性フイルムの浮
き上がり現象が起り易く、したがつてフイルタ材
の折曲縁端があたかも熱融着性フイルム自体に埋
め込まれたがごとき強力な一体化状態が得られ難
いのである。以上は述べたごとく本発明は一つに
は熱融着性フイルムの特性を応用するものである
が、単に合成樹脂フイルムとして熱融着性フイル
ムを限定使用するのみでなく、フイルタ材として
も熱融着性能をもつたものを使用することによ
り、強力な一体化状態を得ることができる。すな
わち、構成繊維の一部として熱融着性繊維を含有
せしめた不織布、バインダーとして熱融着性樹脂
を、あるいはバインダーの一部として熱融着性樹
脂を含有する不織布、あるいは構成繊維、バイン
ダーの両方共に熱融着性繊維、熱融着性樹脂を含
有する不織布又は両縁端部に熱融着性樹脂を含浸
付着せしめたシート物のいづれかをフイルタ材と
して使用すれば、フイルタ材の折曲線端と熱融着
性フイルムとが完全に溶融一体化するため、より
一層強力な一体化状態が得られる。ところで本発
明でいう熱融着性フイルムとは、例えばエチレン
酢酸ビニル共重合樹脂フイルム、ポリアミド系樹
脂フイルム等があり、又これらの熱融着性フイル
ムと布帛、あるいは耐熱性フイルム等とをラミネ
ートしたものをも必要に応じて用いることができ
る。以下実施例によつて本発明をさらに具体的に
説明する。 In the present invention, it is not possible to obtain the above-mentioned strong integrated state by simply using a heat-fusible film as the synthetic resin film, but it is possible to achieve this strong integration state only by performing a unique integration operation. A state of unity is obtained. In other words, the heat-fusible film is heated in advance to make it usable, and while this state is maintained, it is spread over the bent edge of the filter material, or the filter material is bent in an unheated state. Spread it out on the edge and then heat it to make the heat-fusible film into a state where it can be fused, and then apply light pressure to the extent that the filter material is not crushed at room temperature or cold temperature to cool the heat-fusible film. After that, a strong integrated state can be obtained by performing the unifying operation of removing the pressure. As already mentioned, when integrating the filter material and synthetic resin film, it is almost impossible to apply pressure because there is a risk of crushing the filter material. The so-called integration cannot be completed completely by simply spreading the filter material over the bent edge, and a certain amount of pressure is still required. However, the light pressurization in the present invention serves not only the purpose of simply pressing the heat-fusible film onto the filter material, but also the purpose of cooling and solidifying the heat-fusible film that is in a heated and molten state. That is, not only the former purpose but also the timing of pressure removal need not be particularly limited, and the former purpose can be achieved even if the pressure is removed while the heat-fusible film is still in a residual heat state. Since the pressurization of the present invention also achieves the important purpose of cooling and solidifying the heat-fusible film, the time of pressure removal is limited to after the heat-fusible film has cooled. If the pressure is removed while the heat-fusible film is still in a residual heat state, the heat-fusible film is likely to lift up from the bent edge of the filter material afterward, and the bent edge of the filter material is likely to lift up. It is difficult to obtain a strong integrated state as if it were embedded in the heat-fusible film itself. As described above, the present invention applies the characteristics of a heat-fusible film in part, but it is not only a limited use of a heat-fusible film as a synthetic resin film, but also a heat-fusible film that can be used as a filter material. A strong integrated state can be obtained by using a material with fusion bonding properties. In other words, a nonwoven fabric containing heat-fusible fibers as part of its constituent fibers, a heat-fusible resin as a binder, a nonwoven fabric containing a heat-fusible resin as a part of the binder, or a combination of constituent fibers and binder. If either a heat-fusible fiber, a nonwoven fabric containing a heat-fusible resin, or a sheet material whose both edges are impregnated with a heat-fusible resin are used as the filter material, the folding line of the filter material Since the end and the heat-fusible film are completely melted and integrated, an even stronger integrated state can be obtained. By the way, the heat-fusible film in the present invention includes, for example, ethylene-vinyl acetate copolymer resin film, polyamide resin film, etc., and these heat-fusible films are laminated with fabric, heat-resistant film, etc. can also be used as needed. The present invention will be explained in more detail below using Examples.
実施例
厚さ100μのエチレン酢酸ビニル共重合樹脂フ
イルムをあらかじめ150℃に加熱し、一方におい
て３デニールのポリエステル繊維と３デニールの
ポリエチレン−ポリプロピレンコンジユゲート繊
維とが60対40の重量割合で混合され、当該構成繊
維の40重量％のアリル酸エステル系樹脂によつて
構成繊維相互が接合されてなる不織布を巾200mm
長さ6.0ｍに切り取り、このものを折り目間隔20
mmのプリーツ状に形成したままのフイルタ材の折
曲縁端を150℃に加熱し、当該フイルタ材の折曲
縁端と前記エチレン酢酸ビニル共重合体樹脂フイ
ルムとがいまだ加熱状態にある間にエチレン酢酸
ビニル共重合体樹脂フイルムを上記フイルタ材の
折曲縁端上に広げ置きしかる後エチレン酢酸ビニ
ル共重合体樹脂フイルム面上から常温の加圧板を
もつてフイルタ材が押しつぶされない程度に加圧
し、フイルタ材の折曲縁端およびエチレン酢酸ビ
ニル共重合樹脂フイルムのいづれもが完全冷却し
てから加圧板を除去することによつて折りたたみ
可能な空調用フイルタを得た。Example A 100μ thick ethylene-vinyl acetate copolymer resin film was preheated to 150°C, and on the other hand, 3-denier polyester fibers and 3-denier polyethylene-polypropylene conjugate fibers were mixed in a weight ratio of 60:40. , a nonwoven fabric with a width of 200 mm in which the constituent fibers are bonded to each other by allylic acid ester resin containing 40% by weight of the constituent fibers.
Cut this piece to a length of 6.0m, with a crease interval of 20
The bent edge of the filter material, which has been formed into a pleat shape of mm, is heated to 150°C, and while the bent edge of the filter material and the ethylene vinyl acetate copolymer resin film are still in the heated state, After spreading the ethylene vinyl acetate copolymer resin film on the bent edge of the filter material, apply pressure from above the ethylene vinyl acetate copolymer resin film using a pressure plate at room temperature to the extent that the filter material is not crushed. After the bent edges of the filter material and the ethylene-vinyl acetate copolymer resin film were completely cooled, the press plate was removed to obtain a foldable air-conditioning filter.
上記によつて得られた空調用フイルタは、フイ
ルタ材と熱融着性フイルムとがフイルタ材の折曲
縁端においてきわめて強力に一体化したものであ
つて、輸送中あるいはダクト開口部への装着作業
中にフイルタ材と熱融着性フイルムとが剥離する
ようなことのない非常に優れたものであつた。 The air conditioning filter obtained in the above manner has a filter material and a heat-fusible film that are extremely strongly integrated at the bent edge of the filter material, and cannot be easily attached to a duct opening during transportation or installation. This was an excellent product in which the filter material and the heat-adhesive film did not peel off during the work.
第１図は改良ダクトフイルタの一例を示す斜視
図、第２図は改良ダクトフイルタがダクト開口部
に装置された状態を示す透視図である。
１……改良ダクトフイルタ、２……フイルタ
材、３……折り目間隔、４，４′…５，５′……折
り目、６……合成樹脂フイルム、７，７′…８，
８……折曲縁端、９……ダクト開口部。
FIG. 1 is a perspective view showing an example of the improved duct filter, and FIG. 2 is a perspective view showing the improved duct filter installed in a duct opening. 1... Improved duct filter, 2... Filter material, 3... Crease interval, 4, 4'... 5, 5'... Crease, 6... Synthetic resin film, 7, 7'... 8,
8...Bent edge, 9...Duct opening.
Claims (1)
含有する不織布であつて、多数の折り目をもつて
プリーツ状に折曲形成されたフイルタ材の両折曲
縁端にプリーツの適当な折り目間隔を保つた状態
で熱融着性フイルムを熱融着せしめるに際して、
あらかじめ加熱した熱融着性フイルムをフイルタ
材のあらかじめ加熱した折曲縁端上に広げ置く
か、あるいは未加熱の熱融着性フイルムをフイル
タ材の未加熱の折曲縁端上に広げ置きして、しか
る後に加熱するかして、次いで熱融着性フイルム
面上から常温もしくは冷温で軽く加圧し熱融着性
フイルムが冷却した後、除圧することを特徴とす
る折りたたみ可能な空調用フイルタの製造方法。1 A nonwoven fabric containing heat-fusible fibers and/or heat-fusible resin, which is folded into a pleat shape with a large number of folds. Appropriate creases of the pleats are formed at both bent edges of the filter material. When heat-sealing the heat-adhesive film while maintaining the spacing,
Spread a pre-heated heat-fusible film on the pre-heated bent edge of the filter material, or spread an unheated heat-fusible film on the unheated bent edge of the filter material. A foldable air-conditioning filter characterized in that the heat-fusible film is heated, then lightly pressurized from the surface of the heat-fusible film at room temperature or cold temperature, and after the heat-fusible film has cooled, the pressure is removed. Production method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12159079A JPS5645723A (en) | 1979-09-22 | 1979-09-22 | Production of folding type filter for air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12159079A JPS5645723A (en) | 1979-09-22 | 1979-09-22 | Production of folding type filter for air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5645723A JPS5645723A (en) | 1981-04-25 |
| JPS644810B2 true JPS644810B2 (en) | 1989-01-26 |
Family
ID=14815005
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12159079A Granted JPS5645723A (en) | 1979-09-22 | 1979-09-22 | Production of folding type filter for air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5645723A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4636231A (en) * | 1985-08-15 | 1987-01-13 | Allied Corporation | Panel air filter |
| US4615650A (en) * | 1985-10-15 | 1986-10-07 | Gte Valeron Corporation | Locking pin for a tool holder |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55115324U (en) * | 1979-02-09 | 1980-08-14 |
-
1979
- 1979-09-22 JP JP12159079A patent/JPS5645723A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5645723A (en) | 1981-04-25 |
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