DE2117592A1 - Plastic mesh filter assembly - with plastic mounting frame of differentially soluble material - Google Patents

Plastic mesh filter assembly - with plastic mounting frame of differentially soluble material

Info

Publication number
DE2117592A1
DE2117592A1 DE19712117592 DE2117592A DE2117592A1 DE 2117592 A1 DE2117592 A1 DE 2117592A1 DE 19712117592 DE19712117592 DE 19712117592 DE 2117592 A DE2117592 A DE 2117592A DE 2117592 A1 DE2117592 A1 DE 2117592A1
Authority
DE
Germany
Prior art keywords
plastic
filter fabric
support frame
filter
grooves
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
DE19712117592
Other languages
German (de)
Other versions
DE2117592B2 (en
DE2117592C3 (en
Inventor
Rudolf 6239 Diedenbergen; Leopold Dieter 6000 Nieder-Eschbach Caramel
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.)
Mannesmann VDO AG
Original Assignee
Mannesmann VDO AG
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 Mannesmann VDO AG filed Critical Mannesmann VDO AG
Priority to DE2117592A priority Critical patent/DE2117592C3/en
Publication of DE2117592A1 publication Critical patent/DE2117592A1/en
Publication of DE2117592B2 publication Critical patent/DE2117592B2/en
Application granted granted Critical
Publication of DE2117592C3 publication Critical patent/DE2117592C3/en
Expired legal-status Critical Current

Links

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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/4895—Solvent bonding, i.e. the surfaces of the parts to be joined being treated with solvents, swelling or softening agents, without adhesives
    • 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
    • B29C37/00—Component parts, details, accessories or auxiliary operations, not covered by group B29C33/00 or B29C35/00
    • B29C37/0078—Measures or configurations for obtaining anchoring effects in the contact areas between layers
    • B29C37/0082—Mechanical anchoring
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/54—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles
    • B29C66/543—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles joining more than two hollow-preforms to form said hollow articles
    • B29C66/5432—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles joining more than two hollow-preforms to form said hollow articles joining hollow covers and hollow bottoms to open ends of container bodies
    • 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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/52—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the way of applying the adhesive
    • B29C65/54—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the way of applying the adhesive between pre-assembled parts
    • 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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/52—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the way of applying the adhesive
    • B29C65/54—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the way of applying the adhesive between pre-assembled parts
    • B29C65/546—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the way of applying the adhesive between pre-assembled parts by gravity, e.g. by pouring
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/737—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined
    • B29C66/7379—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined degradable
    • B29C66/73793—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined degradable soluble, e.g. water-soluble
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Filtering Materials (AREA)

Abstract

Mesh of plastic material which is resistant to fuel etc., and also to specific acids or low alcohol solvents is formed into a hollow cylinder located in the annular grooves of two plastic endcaps. Their material is also fuel resistant but is soluble in the specific solvents referred to above, one of which is used to make an adhesive based on the same material as that of the caps in the proportion of >=2 pts. wt. of solvent to 1 of plastic. This adhesive is then poured into the grooves. Suitability for large scale prodn.

Description

Verfahren zum Befestigen von Filtergewebe aus Kunststoff. Method for attaching filter fabric made of plastic.

Die Erfindung betrifft ein Verfahren zum Befestigen von Filtergewebe aus Kunststoff in einem steifen Träger rahmen aus Kunststoff, insbesondere Verfahren zur Herstellung von zylinderförmigen oder ähnlichen Kraftstofffiltern mit einem Mantel aus Filtergewebe und steifen Kappen an den Stirnseiten aus kraftstoffbeständigen Kunststoffen.The invention relates to a method for attaching filter fabric made of plastic in a rigid support frame made of plastic, in particular method for the production of cylindrical or similar fuel filters with a Jacket made of filter fabric and stiff caps on the front sides made of fuel-resistant Plastics.

Die heute üblichen Kraftstoffilter, die dem in den Kraftstoffbehälter von Kraftfahrzeugen reichenden Ansaugrohr vorgeschaltet werden, sind vorzugsweise zylinderförmig gestaltet, wobei der Mantel aus einem Filtergewebe besteht, das entweder eine genügende Eigensteifigkeit oder Versteifungsrippen besitzt, während die Stirnseiten des Zylinders von steifen Deckeln verschlossen sind und durch einen der Deckel das Ansaugrohr hindurchgeführt ist.The fuel filters commonly used today, which are installed in the fuel tank of motor vehicles reaching intake manifold are preferred Cylindrical design, the jacket consists of a filter fabric that either has sufficient inherent rigidity or stiffening ribs, while the end faces of the cylinder are closed by rigid lids and one of the lids has the Suction pipe is passed.

Es ist bekannt, solche Kraftstoffilter ganz aus kraftstoffbeständigen Kunststoffen herzustellen, wobei entweder der Filtermantel und die steifen Deckel als vorgefertigte getrennte Bauteile miteinander verschweißt oder die Deckel an den Filtermantel durch Umspritzen mit Kunststoff angeformt werden. Beide Herstellungsarten sind relativ aufwendig und teuer, weil die Teile entweder in die Schweißvorrichtung oder die Spritzgußform eingebracht werden müssen und die Filter nur einzeln herstellbar sind.It is known to make such fuel filters entirely fuel-resistant Manufacture plastics, with either the filter jacket and the rigid cover as prefabricated separate components welded together or the lids on the filter jacket can be molded by insert molding with plastic. Both types of production are relatively complex and expensive because the parts are either in the welding device or the injection mold must be introduced and the filters can only be produced individually are.

Die Erfindung schlägt zur Vereinfachung und Verbilligung der Herstellung solcher Kraftstoffilter ein Verfahren zum Befestigen des Filtergewebes vor, das darin besteht, daß das Filtergewebe aus einem in Säuren, beispielsweise Ameisensäure, oder niederen Alkoholen, beispielsweise Methanol, nicht löslichen Kunststoff und der Trägerrahmen aus einem in einem dieser Lösungsmittel löslichen Kunststoff hergestellt sind, daß in dem Trägerrahmen Rillen zur Aufnahme des Filtergewebes vorgesehen sind und in diese Rillen nach dem Einsetzen des Filtergewebes eine flüssige Füllmasse eingebracht wird, die aus einem Gewichtsteil Kunststoff der gleichen Art, aus dem der Trägerrahmen hergestellt ist, und mindestens zwei Gewichtsteilen eines der Lösungsmittel des Kunststoffes besteht. Werden das Filtergewebe eines Kraftstoffilters beispielsweise aus in den genannten Lösungsmitteln nichtlöslichem Polyvinylidenchlorid und die steifen Deckel für den Abschluß der Stirnseiten beispielsweise aus in dem Lösungsmittel löslichem 6-Polyamid hergestellt, so besteht die Füllmasse aus einem Gewichtsteil 6-Polyamid und mindestens zwei Gewichtsteilen des Lösungsmittels. Die nach dem Einsetzen des Filtergewebes in die Rillen der Deckel dosiert eingebrachte flüssige Füllmasse bewirkt ein Anlösen des Deckelkunststoffes, das Lösungsmittel wird teilweise in die Nasse des Deckels aufgenommen und verdunstet, Ameisensäure beispielsweise in 24 Stunden, und es verbleibt eine aus der eingetrockneten Füllmasse in stofflicher, molekularer Verbindung mit der Deckelmasse entstandene Verankerung des Deckels, die durch die Maschen des Filtergewebes reicht und den Rand des zylindrischen Mantels dicht umschließt.The invention proposes to simplify and make production cheaper Such a fuel filter provides a method for attaching the filter fabric, the consists in the fact that the filter fabric consists of an acid, for example formic acid, or lower alcohols, such as methanol, insoluble plastic and the Support frame made of a soluble in one of these solvents plastic are that grooves are provided in the support frame for receiving the filter fabric and a liquid filling compound in these grooves after the filter fabric has been inserted is introduced, which consists of one part by weight of plastic of the same type from which the support frame is made, and at least two parts by weight of one of the solvents of the plastic. For example, it is the filter fabric of a fuel filter from polyvinylidene chloride insoluble in the solvents mentioned and the rigid cover for the closure of the end faces, for example, in the solvent soluble 6-polyamide produced, the filling compound consists of one part by weight 6-polyamide and at least two parts by weight of the solvent. The after insertion of the filter fabric in the grooves of the lid dosed liquid filler causes the cover plastic to partially dissolve, the solvent is partially absorbed the wetness of the lid is absorbed and evaporated, formic acid for example in 24 hours, and one of the dried-up filling compound remains in a material, Molecular connection with the lid mass anchoring of the lid, which extends through the mesh of the filter fabric and the edge of the cylindrical jacket tightly encloses.

Eine nach diesem Verfahren durchgeführte Befestigung und Verbindung des Filtergewebes mit dem Kunststoffträger hat den Vorteil, daß eine Anzahl ron Trägern, beispielsweise die erwähnten Deckel für Kraftstoffilter in einer Vielfachform hergestellt werden können und das Einsetzen der Filtermäntel in die Deckelrillen sowie das Einbringen der flüssigen Füllmasse in dosierter Menge in die Rillen durch automatische Fertigungsvorrichtungenausgeführt und dadurch die Herstellunggegenüber der Einzelfertigung nach dem bekannte, eingangs beschriebenen Herstellungsverfahren erheblich verbilligt werden kann.A fastening and connection carried out according to this procedure the filter fabric with the plastic carrier has the advantage that a number of ron Carriers, for example the mentioned covers for fuel filters in a multiple form can be made and the insertion of the filter jackets into the lid grooves and the introduction of the liquid filler in a metered amount into the grooves automatic Manufacturing devices carried out and thereby the manufacturing opposite the one-off production according to the known manufacturing process described at the beginning can be significantly cheaper.

Anhand der Zeichnung einer stark vergrößerten Schnittansicht durch eine Rille des Trägerrahmens mit eingesetztem Filtergewebe sei die Wirkung des erfindungsgemäßen Verfahrens anschaulich erläutert. Die Zeichnung zeigt den Zustand der zu verbindenden Teile in Fig.1 knapp nach dem Einbringen der flüssigen Füllmasse und Fig.2 nach dem völligen Verdunsten des Lösungsmittels.Based on the drawing, a greatly enlarged sectional view through a groove of the support frame with inserted filter fabric is the effect of the invention Procedure clearly explained. The drawing shows the state of the to be connected Parts in Fig.1 just after the introduction of the liquid filler and Fig.2 after the complete evaporation of the solvent.

Mit 1 ist das Filtergewebe und mit 2 der steife Trägerrahmen bezeichnet. Die in die Rille eingebrachte flüssige Füllmasse 3 füllt die Lücken des Filtergewebes und den Raum zwischen dem Gewebe 1 und den Rillenwänden aus. Das Lösungsmittel löst auch die Rillenwände an, dringt in die Masse des Trägerteiles 2 ein und bringt diesen zum Quellen. Nach einer bestimmten Zeit, z.B. 24 Stunden, ist das Lösungsmittel der Füllmasse 3 teils vom Träger 2 aufgenommen worden, teils verdunstet und der in der Füllmasse gelöste Kunststoff so weit ausgetrocknet und erhärtet, daß bereits eine feste Verbindung zwischen dem Filter 1 und dem Träger 2 besteht.1 with the filter fabric and 2 with the rigid support frame. The liquid filling compound 3 introduced into the groove fills the gaps in the filter fabric and the space between the fabric 1 and the groove walls. The solvent dissolves also the groove walls, penetrates into the mass of the support part 2 and brings it for swelling. After a certain time, e.g. 24 hours, the solvent is the filling compound 3 has been partly absorbed by the carrier 2, partly evaporated and the The plastic dissolved in the filling compound has dried out and hardened to such an extent that it has already been there is a fixed connection between the filter 1 and the carrier 2.

Während einer weiteren Zeit verdunstet auch der Rest des Lösungsmittels und die Quellung des Trägerteiles schwindet wieder. Da in den von der flüssigen Füllmasse 3 eingenommenen Raum anstelle des verdunsteten Lösungsmittels ein Teil des aus dem Träger 2 ausgelösten Kunststoffes eingezogenwird, tritt bei völliger Verdunstung des Lösungsmittels eine gewisse Schrumpfung des Teiles 2 und Zusammenziehung der Rillenwände ein, die die Befestigung und Abdichtung des Filtergewebes 1 im Träger 2 noch unterstUtzt.During a further period of time, the remainder of the solvent also evaporates and the swelling of the carrier part disappears again. Since in the from the liquid Filling compound 3 occupied space instead of the evaporated solvent a part the plastic released from the carrier 2 is drawn in, occurs with complete evaporation of the solvent a certain shrinkage of the part 2 and contraction of the groove walls that secure and seal the Filter fabric 1 in carrier 2 is still supported.

Claims (1)

Patentanspruch. Claim. Verfahren zum Befestigen von Filtergeweben aus Kunststoff in einem steifen Trägerrahmen aus Kunststoff, insbesondere Verfahren zur Herstellung von zlinderförmigen oder ähnlichen Kraftstoffiltern mit einem Mantel aus Filtergewebe und steifen Kappen an den Stirnseiten aus kraftstoffbeständigen Kunststoffen, dadurch gzekennzeichnet, daß das Filtergewebe (1) aus einem in Säuren oder niederen Alkoholen nicht löslichen Kunststoff und der Trägerrahmen (2j aus einem in einem dieser Lösungsmittel löslichen Kunststoff hergestellt sind, daß in dem Trägerrahmen Rillen zur Aufnahme des Filtergewebes vorgesehen sind und in diese Rillen nach dem Einsetzen des Filtergewebes eine flüssige Füllmasse (3) eingebracht wird, die aus einem Gewichtsteil Kunststoff der gleichen Art, aus dem der Trägerrahmen hergestellt ist, undinindestens zwei Gewichtsteilen eines der Lösungsmittel des Kunststoffes besteht.Method for attaching filter fabrics made of plastic in one rigid support frame made of plastic, in particular process for the production of Cylinder-shaped or similar fuel filters with a jacket made of filter fabric and stiff caps on the front sides made of fuel-resistant plastics, thereby It indicates that the filter fabric (1) is made of an acid or lower alcohol insoluble plastic and the support frame (2j made of one in one of these solvents Soluble plastic are made that grooves in the support frame for receiving of the filter fabric are provided and in these grooves after the insertion of the filter fabric a liquid filling compound (3) is introduced, which consists of one part by weight of plastic of the same type from which the support frame is made and at least two Parts by weight of one of the solvents of the plastic. LeerseiteBlank page
DE2117592A 1971-04-10 1971-04-10 Method for attaching filter fabric made of plastic Expired DE2117592C3 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE2117592A DE2117592C3 (en) 1971-04-10 1971-04-10 Method for attaching filter fabric made of plastic

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2117592A DE2117592C3 (en) 1971-04-10 1971-04-10 Method for attaching filter fabric made of plastic

Publications (3)

Publication Number Publication Date
DE2117592A1 true DE2117592A1 (en) 1972-10-19
DE2117592B2 DE2117592B2 (en) 1977-09-01
DE2117592C3 DE2117592C3 (en) 1978-05-03

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ID=5804444

Family Applications (1)

Application Number Title Priority Date Filing Date
DE2117592A Expired DE2117592C3 (en) 1971-04-10 1971-04-10 Method for attaching filter fabric made of plastic

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DE (1) DE2117592C3 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0249684A2 (en) * 1986-06-16 1987-12-23 Stefan Kallay Moccasin
EP0985517A1 (en) * 1993-03-24 2000-03-15 Pall Corporation Method for bonding a porous medium to a substrate

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0249684A2 (en) * 1986-06-16 1987-12-23 Stefan Kallay Moccasin
EP0249684A3 (en) * 1986-06-16 1991-01-16 Stefan Kallay Moccasin
EP0985517A1 (en) * 1993-03-24 2000-03-15 Pall Corporation Method for bonding a porous medium to a substrate

Also Published As

Publication number Publication date
DE2117592B2 (en) 1977-09-01
DE2117592C3 (en) 1978-05-03

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