JPS52107677A - Tubular filter element and manufacturing method therefor - Google Patents

Tubular filter element and manufacturing method therefor

Info

Publication number
JPS52107677A
JPS52107677A JP345077A JP345077A JPS52107677A JP S52107677 A JPS52107677 A JP S52107677A JP 345077 A JP345077 A JP 345077A JP 345077 A JP345077 A JP 345077A JP S52107677 A JPS52107677 A JP S52107677A
Authority
JP
Japan
Prior art keywords
manufacturing
filter element
method therefor
tubular filter
tubular
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
JP345077A
Other languages
English (en)
Other versions
JPS5635887B2 (ja
Inventor
Biipooru Deibuitsudo
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.)
Pall Corp
Original Assignee
Pall Corp
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
Priority claimed from US05/649,001 external-priority patent/US4112159A/en
Application filed by Pall Corp filed Critical Pall Corp
Publication of JPS52107677A publication Critical patent/JPS52107677A/ja
Publication of JPS5635887B2 publication Critical patent/JPS5635887B2/ja
Granted legal-status Critical Current

Links

Classifications

    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04HMAKING 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
    • D04H1/00Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40Non-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
    • D04H1/54Non-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
    • D04H1/56Non-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 in association with fibre formation, e.g. immediately following extrusion of staple fibres
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D25/00Filters formed by clamping together several filtering elements or parts of such elements
    • B01D25/22Cell-type filters
    • B01D25/24Cell-type roll filters
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D29/00Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/11Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
    • B01D29/111Making filtering elements
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D29/00Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/11Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
    • B01D29/13Supported filter elements
    • B01D29/23Supported filter elements arranged for outward flow filtration
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D39/00Filtering material for liquid or gaseous fluids
    • B01D39/14Other self-supporting filtering material ; Other filtering material
    • B01D39/16Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres
    • B01D39/1607Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous
    • B01D39/1623Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous of synthetic origin
    • B01D39/163Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous of synthetic origin sintered or bonded
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D39/00Filtering material for liquid or gaseous fluids
    • B01D39/14Other self-supporting filtering material ; Other filtering material
    • B01D39/20Other self-supporting filtering material ; Other filtering material of inorganic material, e.g. asbestos paper, metallic filtering material of non-woven wires
    • B01D39/2003Glass or glassy material
    • B01D39/2017Glass or glassy material the material being filamentary or fibrous
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2201/00Details relating to filtering apparatus
    • B01D2201/18Filters characterised by the openings or pores
    • B01D2201/182Filters characterised by the openings or pores for depth filtration
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2239/00Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/04Additives and treatments of the filtering material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2239/00Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/04Additives and treatments of the filtering material
    • B01D2239/0414Surface modifiers, e.g. comprising ion exchange groups
    • B01D2239/0428Rendering the filter material hydrophobic
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2239/00Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/04Additives and treatments of the filtering material
    • B01D2239/0464Impregnants
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2239/00Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/06Filter cloth, e.g. knitted, woven non-woven; self-supported material
    • B01D2239/065More than one layer present in the filtering material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2239/00Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/06Filter cloth, e.g. knitted, woven non-woven; self-supported material
    • B01D2239/065More than one layer present in the filtering material
    • B01D2239/0654Support layers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2239/00Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/06Filter cloth, e.g. knitted, woven non-woven; self-supported material
    • B01D2239/065More than one layer present in the filtering material
    • B01D2239/0681The layers being joined by gluing
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2239/00Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/06Filter cloth, e.g. knitted, woven non-woven; self-supported material
    • B01D2239/069Special geometry of layers
    • B01D2239/0695Wound layers
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10Methods of surface bonding and/or assembly therefor
    • Y10T156/1002Methods of surface bonding and/or assembly therefor with permanent bending or reshaping or surface deformation of self sustaining lamina
    • Y10T156/1043Subsequent to assembly
    • Y10T156/1049Folding only
JP345077A 1976-01-14 1977-01-14 Tubular filter element and manufacturing method therefor Granted JPS52107677A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/649,001 US4112159A (en) 1973-08-31 1976-01-14 Continuous production of tubular modular filter elements using nonwoven webs from thermoplastic fibers and products

Publications (2)

Publication Number Publication Date
JPS52107677A true JPS52107677A (en) 1977-09-09
JPS5635887B2 JPS5635887B2 (ja) 1981-08-20

Family

ID=24603082

Family Applications (1)

Application Number Title Priority Date Filing Date
JP345077A Granted JPS52107677A (en) 1976-01-14 1977-01-14 Tubular filter element and manufacturing method therefor

Country Status (22)

Country Link
US (1) US4116738A (ja)
JP (1) JPS52107677A (ja)
AT (1) AT360766B (ja)
AU (1) AU510425B2 (ja)
BE (1) BE850368A (ja)
BR (1) BR7700241A (ja)
CA (1) CA1063946A (ja)
CH (1) CH619375A5 (ja)
DE (1) DE2701167C2 (ja)
DK (1) DK149524C (ja)
ES (1) ES455000A1 (ja)
FI (1) FI65170C (ja)
FR (1) FR2338341A1 (ja)
GB (1) GB1539331A (ja)
IL (1) IL51212A (ja)
IT (1) IT1082691B (ja)
NL (1) NL177001C (ja)
NO (1) NO149491C (ja)
NZ (1) NZ183077A (ja)
PT (1) PT66070B (ja)
SE (1) SE430758B (ja)
ZA (1) ZA7769B (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002542009A (ja) * 1999-04-21 2002-12-10 オズモニクス, インコーポレイテッド 不織デプスフィルター構成要素およびその製造方法

Families Citing this family (62)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4475972A (en) * 1981-10-01 1984-10-09 Ontario Research Foundation Implantable material
US4731215A (en) * 1982-06-07 1988-03-15 Biax Fiberfilm Corporation Process for forming non-woven webs from highly oriented melt blown fibers
US4847125A (en) * 1982-06-07 1989-07-11 Biax Fiberfilm Corporation Tube of oriented, heat shrunk, melt blown fibers
US4594202A (en) * 1984-01-06 1986-06-10 Pall Corporation Method of making cylindrical fibrous filter structures
US4726901A (en) * 1984-01-06 1988-02-23 Pall Corporation Cylindrical fibrous structures with graded pore size
US4712553A (en) * 1985-05-30 1987-12-15 Cordis Corporation Sutures having a porous surface
US4880002A (en) * 1985-05-30 1989-11-14 Corvita Corporation Stretchable porous sutures
US4824451A (en) * 1985-12-31 1989-04-25 Kimberly-Clark Corporation Melt-blown filter medium
US4714647A (en) * 1986-05-02 1987-12-22 Kimberly-Clark Corporation Melt-blown material with depth fiber size gradient
US4983292A (en) * 1988-06-27 1991-01-08 Morgan Jr H William Seamless filter bag and method of its manufacture
TW206266B (ja) * 1991-06-12 1993-05-21 Toray Industries
US5190502A (en) * 1992-02-07 1993-03-02 Dayco Products, Inc. Belt tensioning system, belt tensioner therefor and methods of making the same
US5366576A (en) * 1993-04-14 1994-11-22 Clack Corporation Method for producing tubular products from nonwoven fibers
GB9307710D0 (en) * 1993-04-14 1993-06-02 Rothmans Benson & Hedges Smoking apparatus-l
US5409642A (en) * 1993-10-06 1995-04-25 Exxon Chemical Patents Inc. Melt blowing of tubular filters
US5431829A (en) * 1993-12-16 1995-07-11 Pall Corporation Polymethylpentene filtration medium
US6214143B1 (en) * 1994-05-13 2001-04-10 Johns Mansville International, Inc. Method and apparatus for forming a uniform blanket of synthetic or glass fibers
US5582907A (en) * 1994-07-28 1996-12-10 Pall Corporation Melt-blown fibrous web
EP0772484B1 (en) * 1994-07-28 2008-02-27 Pall Corporation Fibrous web and process of preparing same
US5591335A (en) * 1995-05-02 1997-01-07 Memtec America Corporation Filter cartridges having nonwoven melt blown filtration media with integral co-located support and filtration
US5639369A (en) * 1995-07-14 1997-06-17 W. L. Gore & Associates, Inc. Filter element
US5827430A (en) * 1995-10-24 1998-10-27 Perry Equipment Corporation Coreless and spirally wound non-woven filter element
US5725812A (en) * 1996-07-08 1998-03-10 Aaf International Melt blowing apparatus and method for forming a fibrous layered web of filter media including a fluid distribution arrangement
US5653833A (en) * 1996-07-25 1997-08-05 Memtec America Corporation Method for integrally joining preformed thermoplastic core elements especially adapted for the continuous manufacture of melt-blown filter cartridges
US5772952A (en) * 1997-02-07 1998-06-30 J&M Laboratories, Inc. Process of making meltblown yarn
US6086696A (en) * 1998-07-21 2000-07-11 The Boeing Company Method of forming a seamless, cylindrical, thermoplastic structure with a multiple compaction roller winder
US6319342B1 (en) 1998-12-31 2001-11-20 Kimberly-Clark Worldwide, Inc. Method of forming meltblown webs containing particles
US6417120B1 (en) 1998-12-31 2002-07-09 Kimberly-Clark Worldwide, Inc. Particle-containing meltblown webs
US6342283B1 (en) * 1999-03-30 2002-01-29 Usf Filtration & Separations, Inc. Melt-blown tubular core elements and filter cartridges including the same
US6446814B1 (en) 1999-04-22 2002-09-10 Joseph A. King Method of making a dual filter
US7168574B2 (en) * 1999-04-22 2007-01-30 King Technology Dual filter
US20020155776A1 (en) * 1999-10-15 2002-10-24 Mitchler Patricia Ann Particle-containing meltblown webs
US6494974B2 (en) 1999-10-15 2002-12-17 Kimberly-Clark Worldwide, Inc. Method of forming meltblown webs containing particles
US6652871B1 (en) * 2000-01-21 2003-11-25 Joseph A. King Delivery system and method of making article
CA2331084C (en) * 2000-01-21 2011-10-25 King Technology, Inc. Water treatment
DE60113127T2 (de) * 2000-07-28 2006-07-06 Morgan jun., H. William, Michigan City Verfahren zur Herstellung von Filtern
US6736274B2 (en) 2001-08-17 2004-05-18 Total Filter Technology, Inc. Nonwoven tubular filter extracting
WO2003035958A1 (en) * 2001-10-23 2003-05-01 Osmonics, Inc. Three-dimensional non-woven media, filter and process
AU784837B2 (en) * 2001-11-13 2006-07-06 William H. Morgan Impregnated micro-fiber filtration unit
US20060031111A9 (en) * 2002-05-30 2006-02-09 Whymark Thomas J Multi-market broadcast tracking, management and reporting method and system
WO2003103797A1 (en) * 2002-06-07 2003-12-18 Parametric Innovations, Inc. Advancing tubular filter products
EP1464240B1 (de) * 2003-04-03 2006-10-04 Hauni Maschinenbau AG Verfahren und Vorrichtung zur Herstellung eines Vlieses für die Herstellung von Filterstäben
US20060278574A1 (en) * 2003-06-06 2006-12-14 Pall Corporation Fluid treatment element
US8277654B2 (en) * 2003-11-26 2012-10-02 Selecto, Inc. Water purification apparatus and system
US20060231486A1 (en) * 2005-04-19 2006-10-19 Morgan Howard W Filtration element having a variable density sidewall
US20060230727A1 (en) * 2005-04-19 2006-10-19 Morgan Howard W Filtration element having a variable density sidewall
KR20060110230A (ko) * 2005-04-19 2006-10-24 윌리엄 모건 하워드 가변성의 밀도 측벽을 가진 필터소자 및 그 제조방법
US8114183B2 (en) * 2005-09-20 2012-02-14 Cummins Filtration Ip Inc. Space optimized coalescer
US7674425B2 (en) * 2005-11-14 2010-03-09 Fleetguard, Inc. Variable coalescer
US20070062886A1 (en) * 2005-09-20 2007-03-22 Rego Eric J Reduced pressure drop coalescer
US8231752B2 (en) * 2005-11-14 2012-07-31 Cummins Filtration Ip Inc. Method and apparatus for making filter element, including multi-characteristic filter element
CN102574063B (zh) * 2009-10-27 2014-10-01 陶氏环球技术有限责任公司 用于向螺旋卷组件的外围施加胶带层的方法
JP5489084B2 (ja) * 2011-08-12 2014-05-14 Jnc株式会社 混繊長繊維不織布
FR2993475B1 (fr) * 2012-07-19 2015-06-26 Cummins Filtration Sarl Ensemble de filtrage comportant une cartouche de filtration amovible
DE102013111956A1 (de) 2013-10-30 2015-04-30 Egeplast International Gmbh Verfahren zur kontinuierlichen Fertigung von Kunststoffrohren
US10179426B2 (en) 2013-11-06 2019-01-15 Bl Technologies, Inc. Large format melt-blown depth filter cartridge
US11845019B2 (en) 2013-11-06 2023-12-19 Bl Technologies, Inc. Large format melt-blown depth filter cartridge
US20150182895A1 (en) * 2013-12-31 2015-07-02 Bha Altair, Llc Process for making rigid porous plastic tubular filters
US20160023136A1 (en) * 2014-07-28 2016-01-28 Graver Technologies Llc End Plug for Precoat Filter Element
US9260800B1 (en) 2015-02-04 2016-02-16 Thomas M. Tao Melt-blowing apparatus with improved puller device for producing tubular nonwovens
EP3288663A1 (en) 2015-04-28 2018-03-07 General Electric Company Melt-blown depth filter element, method and machine of making it
CN111356513A (zh) * 2017-09-07 2020-06-30 博滤克斯公司 小直径的管状多孔纤维过滤器

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2946449A (en) * 1957-08-15 1960-07-26 Ernest C Shaw Liquid filters
DE1436311A1 (de) * 1964-02-21 1969-07-10 Freudenberg Carl Fa Verfahren zur Herstellung von zylindrischen Filterkoerpern aus Faservliesen
US3354244A (en) * 1964-08-13 1967-11-21 Hudson Engineering Corp Method and apparatus for the manufacture of foamed plastic tubing
GB1104680A (en) * 1965-10-18 1968-02-28 Univ Birmingham Artificial artery
US3498873A (en) * 1965-10-29 1970-03-03 Dow Chemical Co Net structures of multicomponent filaments
US3477892A (en) * 1966-01-21 1969-11-11 Owens Illinois Inc Method and apparatus for forming plastic tubular netting
US3615998A (en) * 1968-07-10 1971-10-26 Celanese Corp Method of biaxially oriented nonwoven tubular material
DE1902533A1 (de) * 1969-01-18 1970-09-10 Bauknecht Gmbh G Entnahmevorrichtung fuer Materialkaesten
DE2111743C3 (de) * 1970-04-02 1973-10-11 Kimikazu Fujisawa Kanagawa Azuma (Japan) Verfahren und Vorrichtung zur Her Stellung von schlauchfbrmigen Schaum stoff Netzen
DE2131236A1 (de) * 1971-06-24 1973-01-11 Domnick Hunter Holdings Mikroporoeser faserfilter
US3801400A (en) * 1972-03-24 1974-04-02 Celanese Corp Varying density cartridge filters
US3933557A (en) * 1973-08-31 1976-01-20 Pall Corporation Continuous production of nonwoven webs from thermoplastic fibers and products
US3909174A (en) * 1973-12-26 1975-09-30 Beloit Corp Continuous tube forming by melt blowing technique
US3905734A (en) * 1973-12-26 1975-09-16 Beloit Corp Continuous tube forming by melt blowing technique
US3905736A (en) * 1973-12-26 1975-09-16 Beloit Corp Sheet web generation via a tubularly formed web
US3929957A (en) * 1975-03-05 1975-12-30 Dayco Corp Method for producing a continuous flexible reinforced tubular conduit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002542009A (ja) * 1999-04-21 2002-12-10 オズモニクス, インコーポレイテッド 不織デプスフィルター構成要素およびその製造方法
JP4721521B2 (ja) * 1999-04-21 2011-07-13 ジーイー・オズモニクス・インコーポレイテッド 不織デプスフィルター構成要素およびその製造方法

Also Published As

Publication number Publication date
AT360766B (de) 1981-01-26
FI770092A (ja) 1977-07-15
DE2701167A1 (de) 1977-07-28
IL51212A (en) 1980-03-31
FR2338341A1 (fr) 1977-08-12
DE2701167C2 (de) 1982-12-16
AU2113677A (en) 1978-07-13
SE7700278L (sv) 1977-07-15
ATA15777A (de) 1980-06-15
BE850368A (fr) 1977-07-14
FI65170B (fi) 1983-12-30
ES455000A1 (es) 1978-01-01
NL177001B (nl) 1985-02-18
IL51212A0 (en) 1977-03-31
JPS5635887B2 (ja) 1981-08-20
US4116738A (en) 1978-09-26
NO149491B (no) 1984-01-23
PT66070A (en) 1977-02-01
FR2338341B1 (ja) 1982-02-26
NL7700224A (nl) 1977-07-18
DK149524C (da) 1986-12-15
NO770108L (no) 1977-07-15
CH619375A5 (ja) 1980-09-30
NO149491C (no) 1984-05-02
ZA7769B (en) 1977-11-30
NZ183077A (en) 1979-03-28
CA1063946A (en) 1979-10-09
DK12277A (da) 1977-07-15
IT1082691B (it) 1985-05-21
FI65170C (fi) 1984-04-10
SE430758B (sv) 1983-12-12
BR7700241A (pt) 1977-10-18
NL177001C (nl) 1985-07-16
AU510425B2 (en) 1980-06-26
DK149524B (da) 1986-07-14
PT66070B (en) 1978-06-23
GB1539331A (en) 1979-01-31

Similar Documents

Publication Publication Date Title
JPS52107677A (en) Tubular filter element and manufacturing method therefor
JPS51122871A (en) Tubular filter element and manufacturing method therefor
JPS5348274A (en) Filter cloth and manufacturing method therefor
JPS52147370A (en) Filter medium and manufacturing method therefor
AU508289B2 (en) Filter element and its making
AU506029B2 (en) Filter element and its making
JPS52142000A (en) Connecting rod and manufacturing method thereof
JPS52108022A (en) Insecticide and its manufacturing method
JPS5372955A (en) Gear and manufacturing method thereof
JPS5369137A (en) Foilltube * its manufacturing method and its device
KE3121A (en) A method of manufacturing a filter element
JPS5265365A (en) Filter construction and manufacturing method therefor
JPS52114999A (en) Method of manufacturing metallfilm resistor
JPS5347077A (en) Filter element
JPS5356776A (en) Depth type filter member and manufacturing method therefor
JPS52115474A (en) Filter manufacturing method
JPS52132418A (en) Selffenclosing tube and manufacturing method of it
JPS5322665A (en) Filter and backkwashing method therefor
JPS52129068A (en) Filter element
JPS5316970A (en) Filter element and manufacturing method therefor
JPS52112860A (en) Filter medium and manufacturing method therefor
JPS52112859A (en) Filter paper manufacturing method
JPS52124196A (en) Method of manufacturing pressureesensing resistor
JPS52121760A (en) Method of manufacturing capacitor element
JPS5340476A (en) Filter element manufacturing method