CA2131359A1 - Process for Making Hermetically Sealed Filter Units and Filters Made Thereby - Google Patents
Process for Making Hermetically Sealed Filter Units and Filters Made TherebyInfo
- Publication number
- CA2131359A1 CA2131359A1 CA2131359A CA2131359A CA2131359A1 CA 2131359 A1 CA2131359 A1 CA 2131359A1 CA 2131359 A CA2131359 A CA 2131359A CA 2131359 A CA2131359 A CA 2131359A CA 2131359 A1 CA2131359 A1 CA 2131359A1
- Authority
- CA
- Canada
- Prior art keywords
- hermetically sealed
- filter units
- edge
- filter element
- housing parts
- 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
Links
- 238000000034 method Methods 0.000 title abstract 3
- 229920001169 thermoplastic Polymers 0.000 abstract 2
- 239000004416 thermosoftening plastic Substances 0.000 abstract 2
- 238000001746 injection moulding Methods 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 238000003825 pressing Methods 0.000 abstract 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14467—Joining articles or parts of a single article
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/36—Other treatment of blood in a by-pass of the natural circulatory system, e.g. temperature adaptation, irradiation ; Extra-corporeal blood circuits
- A61M1/3621—Extra-corporeal blood circuits
- A61M1/3627—Degassing devices; Buffer reservoirs; Drip chambers; Blood filters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D27/00—Cartridge filters of the throw-away type
- B01D27/005—Making filter elements not provided for elsewhere
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D27/00—Cartridge filters of the throw-away type
- B01D27/08—Construction of the casing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/01—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements
- B01D29/012—Making filtering elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/01—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements
- B01D29/05—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements supported
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/36—Other treatment of blood in a by-pass of the natural circulatory system, e.g. temperature adaptation, irradiation ; Extra-corporeal blood circuits
- A61M1/3621—Extra-corporeal blood circuits
- A61M1/3627—Degassing devices; Buffer reservoirs; Drip chambers; Blood filters
- A61M1/3633—Blood component filters, e.g. leukocyte filters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2201/00—Details relating to filtering apparatus
- B01D2201/40—Special measures for connecting different parts of the filter
- B01D2201/4084—Snap or Seeger ring connecting means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14311—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles using means for bonding the coating to the articles
- B29C2045/14319—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles using means for bonding the coating to the articles bonding by a fusion bond
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/14—Filters
-
- Y—GENERAL 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S264/00—Plastic and nonmetallic article shaping or treating: processes
- Y10S264/48—Processes of making filters
Landscapes
- Chemical Kinetics & Catalysis (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Heart & Thoracic Surgery (AREA)
- Biomedical Technology (AREA)
- Animal Behavior & Ethology (AREA)
- Mechanical Engineering (AREA)
- Anesthesiology (AREA)
- Manufacturing & Machinery (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Cardiology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
- Filtering Materials (AREA)
Abstract
A process for the manufacture of hermetically sealed filter units and a product made thereby. The process comprises aligning a porous filter element between two housing parts and a thermoplastic skirt that overlaps the edge of at least one housing part to shield the edge of the filter element disposed adjacent to the skirt, pressing the housing parts together and then injection molding a thermoplastic overmold band around the outer portions of the housing parts to form a hermetic seal at the edge of the filter element.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/233,068 | 1994-04-26 | ||
US08/233,068 US5556541A (en) | 1994-04-26 | 1994-04-26 | Process for making hermetically sealed filter units and filters made thereby |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2131359A1 true CA2131359A1 (en) | 1995-10-27 |
CA2131359C CA2131359C (en) | 2000-05-30 |
Family
ID=22875756
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002131359A Expired - Fee Related CA2131359C (en) | 1994-04-26 | 1994-09-01 | Process for making hermetically sealed filter units and filters made thereby |
Country Status (5)
Country | Link |
---|---|
US (2) | US5556541A (en) |
EP (2) | EP0679490B1 (en) |
JP (1) | JP3594092B2 (en) |
CA (1) | CA2131359C (en) |
DE (2) | DE69433306T2 (en) |
Families Citing this family (111)
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US4113627A (en) * | 1976-01-28 | 1978-09-12 | Filtertek, Inc. | Process for making hermetically sealed filter units and filters made thereby |
DE2809321B2 (en) * | 1978-03-03 | 1980-04-24 | Carl Schleicher & Schuell Gmbh & Co Kg, 3352 Einbeck | Disposable filter housing |
DE2837058C2 (en) * | 1978-08-24 | 1985-05-15 | Carl Schleicher & Schüll GmbH & Co KG, 3352 Einbeck | Disposable filters for pressure filtration |
US4347208A (en) * | 1981-04-13 | 1982-08-31 | Amf Incorporated | Method of making filter cell having sealed periphery |
DE3145320A1 (en) * | 1981-11-14 | 1983-05-26 | Biotest-Serum-Institut Gmbh, 6000 Frankfurt | MICROFILTRATION DEVICE FOR FILTRATION OF COAGELS AND MICROAGGREGATES OF BLOOD |
US4444661A (en) * | 1982-04-16 | 1984-04-24 | Gelman Sciences Inc. | Filter device |
US4414172A (en) * | 1982-05-21 | 1983-11-08 | Filtertek, Inc. | Process and apparatus for sealing a plurality of filter elements |
US4579698A (en) * | 1982-05-28 | 1986-04-01 | Amf, Inc. | Process for producing a microporous polymeric filter membrane with adjacent non-porous edge layers and a pleated filter element formed from the membrane |
DE8433835U1 (en) * | 1984-11-17 | 1985-12-12 | Sartorius GmbH, 3400 Göttingen | Filter housing |
US4826598A (en) * | 1985-11-29 | 1989-05-02 | Filtertek, Inc. | Hermetically sealed transmission filter |
US4882055A (en) * | 1986-09-11 | 1989-11-21 | Suratco Products Company | Unitary injection molded filter |
US4957672A (en) * | 1987-12-04 | 1990-09-18 | Carter Robert W | Method of forming a sealing gasket for reticulated foam filter |
US4828694A (en) * | 1988-01-11 | 1989-05-09 | Filtertek, Inc. | Filter with filtration envelope spacing means |
US5049274A (en) * | 1988-01-11 | 1991-09-17 | Filtertek, Inc. | Friction welding process and filter formed thereby |
DE3801866A1 (en) * | 1988-01-22 | 1989-08-03 | Schleicher & Schuell Gmbh | DISPOSABLE FILTER HOLDER WITH DOUBLE-SIDED FILTER SUPPORT |
DE58906719D1 (en) * | 1989-09-29 | 1994-02-24 | Schleicher & Schuell Gmbh | Color-coded disposable filter holder. |
CA2094051A1 (en) * | 1992-04-30 | 1993-10-31 | James T. Connors, Jr. | Filter for filtering an aggressive fluid |
US5308483A (en) * | 1992-08-27 | 1994-05-03 | Gelman Sciences Inc. | Microporous filtration funnel assembly |
-
1994
- 1994-04-26 US US08/233,068 patent/US5556541A/en not_active Expired - Lifetime
- 1994-09-01 CA CA002131359A patent/CA2131359C/en not_active Expired - Fee Related
- 1994-09-05 DE DE69433306T patent/DE69433306T2/en not_active Expired - Lifetime
- 1994-09-05 EP EP94306508A patent/EP0679490B1/en not_active Expired - Lifetime
- 1994-09-05 EP EP00107456A patent/EP1016443B1/en not_active Expired - Lifetime
- 1994-09-05 DE DE69427636T patent/DE69427636T2/en not_active Expired - Lifetime
- 1994-09-14 JP JP22037094A patent/JP3594092B2/en not_active Expired - Fee Related
-
1996
- 1996-06-20 US US08/667,005 patent/US5688460A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE69433306D1 (en) | 2003-12-11 |
EP0679490A3 (en) | 1996-03-27 |
JPH07289858A (en) | 1995-11-07 |
DE69427636T2 (en) | 2002-05-08 |
EP1016443A2 (en) | 2000-07-05 |
US5688460A (en) | 1997-11-18 |
EP1016443A3 (en) | 2001-03-28 |
US5556541A (en) | 1996-09-17 |
JP3594092B2 (en) | 2004-11-24 |
EP1016443B1 (en) | 2003-11-05 |
CA2131359C (en) | 2000-05-30 |
EP0679490A2 (en) | 1995-11-02 |
DE69433306T2 (en) | 2004-08-26 |
EP0679490B1 (en) | 2001-07-04 |
DE69427636D1 (en) | 2001-08-09 |
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EEER | Examination request | ||
MKLA | Lapsed |