DE3712275A1 - Plastic hollow article parts joinable by ultrasonic welding to form a hollow article - Google Patents

Plastic hollow article parts joinable by ultrasonic welding to form a hollow article

Info

Publication number
DE3712275A1
DE3712275A1 DE19873712275 DE3712275A DE3712275A1 DE 3712275 A1 DE3712275 A1 DE 3712275A1 DE 19873712275 DE19873712275 DE 19873712275 DE 3712275 A DE3712275 A DE 3712275A DE 3712275 A1 DE3712275 A1 DE 3712275A1
Authority
DE
Germany
Prior art keywords
hollow body
attachment
cross
edge
groove
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.)
Withdrawn
Application number
DE19873712275
Other languages
German (de)
Inventor
Alois Ferch
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.)
Filtertek GmbH
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DE19873712275 priority Critical patent/DE3712275A1/en
Publication of DE3712275A1 publication Critical patent/DE3712275A1/en
Withdrawn legal-status Critical Current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
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/08—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations
    • 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
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/124—Tongue and groove joints
    • B29C66/1246—Tongue and groove joints characterised by the female part, i.e. the part comprising the groove
    • B29C66/12463—Tongue and groove joints characterised by the female part, i.e. the part comprising the groove being tapered
    • 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
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/124—Tongue and groove joints
    • B29C66/1246—Tongue and groove joints characterised by the female part, i.e. the part comprising the groove
    • B29C66/12469—Tongue and groove joints characterised by the female part, i.e. the part comprising the groove being asymmetric
    • 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
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/13—Single flanged joints; Fin-type joints; Single hem joints; Edge joints; Interpenetrating fingered joints; Other specific particular designs of joint cross-sections not provided for in groups B29C66/11 - B29C66/12
    • B29C66/131—Single flanged joints, i.e. one of the parts to be joined being rigid and flanged in the joint area
    • B29C66/1312—Single flange to flange joints, the parts to be joined being rigid
    • 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
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/302—Particular design of joint configurations the area to be joined comprising melt initiators
    • B29C66/3022—Particular design of joint configurations the area to be joined comprising melt initiators said melt initiators being integral with at least one of the parts to be joined
    • B29C66/30223—Particular design of joint configurations the area to be joined comprising melt initiators said melt initiators being integral with at least one of the parts to be joined said melt initiators being rib-like
    • 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
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/32—Measures for keeping the burr form under control; Avoiding burr formation; Shaping the burr
    • B29C66/322—Providing cavities in the joined article to collect the burr
    • 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
    • B29C66/542—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 hollow covers or hollow bottoms to open ends of container bodies

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

Prefabricated plastic hollow article parts (lid 1, housing body 2) which can be joined at their peripheral surfaces (13, 17) by ultrasonic welding, with simultaneous shaping in the assembled state, to form a hollow article, have on the lid (1) a continuously running strip-shaped projection (3) with an attachment (5) of small cross-section provided for melting as welding material. On the surface of the housing body (2) a groove (4) is provided whose clear cross-section is adapted to the projection cross-section (3). The inner edge (16) of the groove (4) is offset downwardly towards the housing body base (10) with respect to the groove outer edge (15). By this means, an additional cavity is formed between the inner region of the surface (14) of the reinforcement (18) and the plane of the peripheral region (17) of the lid (1). The overflowing portion of the welding material remains adhering in the additional cavity and cannot pass into the interior of the housing (2). <IMAGE>

Description

Die Erfindung betrifft Hohlkörperteile nach dem Oberbegriff des Patentanspruchs 1.The invention relates to hollow body parts according to the preamble of Claim 1.

Aus der Praxis sind Hohlkörperteile bekannt, die durch Schweißen im starken Ultraschallfeld an ihren Rändern zu einem Hohlkörper, z. B. einem Filtergehäuse für Flüssigkeitsfilter, insbesondere Kraftstoff-Filter, für Kraftstoffpumpen oder ähnlich, verbunden werden.From practice, hollow body parts are known, which by welding in strong ultrasonic field at its edges to form a hollow body, e.g. B. one Filter housing for liquid filters, in particular fuel filters, for Fuel pumps or the like can be connected.

Dazu ist im Randbereich der zu verbindenden Oberfläche des Deckelteils ein bandförmiger Vorsatz angeordnet, der beim Zusammenlegen der Hohlkörperteile vor dem Schweißvorgang in eine an der Oberfläche des Gehäuses vorgesehene Nut eingreift (oder auch umgekehrt). Ein als Schweißmaterial für den Schweißvorgang vorgesehener Ansatz ist üblicherweise am Ende des Vorsatzes angeformt und steht mit dem Nutboden in Berührung. Unter Einwirkung des Ultraschalls zerschmilzt der eine geringe Masse aufweisende Ansatz in einer kurzen, vorbestimmten Betriebszeit und bildet das Schweißmaterial für den Schweißvorgang.For this purpose, in the edge region of the surface of the cover part to be connected band-shaped attachment arranged when folding the Hollow body parts before welding in a on the surface of the The housing provided groove engages (or vice versa). A as Welding material is the approach provided for the welding process usually molded at the end of the attachment and stands with the groove bottom in touch. One melts under the influence of ultrasound  low mass approach in a short, predetermined Operating time and forms the welding material for the welding process.

Der lichte Querschnitt der Nut, die im Randbereich z. B. des Gehäusekörpers angeordnet ist, weist beide Seitenwände gleicher Höhe auf. Diese Anordnung ist mit dem schwerwiegenden Nachteil behaftet, daß der Schweißaustrieb, welcher beim Schweißvorgang in dem Zwischenraum zwischen Vorsatz und Nutwänden steigt und schließlich in beiden Richtungen, d. h. nach außen sowie nach innen hin, unkontrolliert herausläuft. Dabei kann ein Teil des Schweißmaterials über die Innenkante der Nut in den Innenraum des Gehäuses gelangen. Das Schweißmaterial kommt nämlich in keine innige Verbindung mit den inneren Randteilen des Gehäuses, und weil es in der Regel sehr spröde ist, bricht es leicht ab und gelangt in den Gehäuse-Innenraum, wodurch schwere Betriebsstörungen, insbesondere bei Flüssigkeitsfiltern oder Pumpen, verursacht werden können.The clear cross-section of the groove, the z. B. of Housing body is arranged, has both side walls of the same height on. This arrangement has the serious disadvantage that that the welding expulsion, which during the welding process in the The gap between the end face and the groove walls increases and finally in both directions, d. H. outwards and inwards, runs out uncontrollably. Part of the welding material can get into the interior of the housing via the inner edge of the groove. The welding material does not come into an intimate connection the inner edge parts of the case and because it is usually very is brittle, it breaks off easily and gets into the Housing interior, causing serious malfunctions, in particular with liquid filters or pumps.

Außerdem kann das unkontrolliert herauslaufende Schweißmaterial zwischen die einander zugewandten Oberflächen der zu verbindenden Teile in solchen Mengen gelangen, daß das für die Ultraschallwirkung notwendige Spiel zwischen den zu verbindenden Oberflächen behindert wird.In addition, the welding material that runs out in an uncontrolled manner between the mutually facing surfaces of the to be connected Parts arrive in such quantities that this is for the ultrasound effect necessary play between the surfaces to be connected is hindered becomes.

Aufgabe der Erfindung ist es, Hohlkörperteile der eingangs genannten Art zu finden, deren Form den unkontrollierten Fluß des Schweißmaterials, insbesondere das Eindringen von überlaufendem Schweißaustritt in den Innenraum des Gehäuses bzw. zwischen die zu verbindenden Oberflächen verhindert. Eine weitere Aufgabe der Erfindung ist darin zu sehen, daß die Festigkeit der Schweißverbindung erhöht wird. The object of the invention is hollow parts of the aforementioned To find a species whose shape is the uncontrolled flow of the Welding material, especially the penetration of overflowing Sweat escapes into the interior of the housing or between connecting surfaces prevented. Another job of Invention is to be seen in the fact that the strength of the Welded joint is increased.  

Diese Aufgabe wird erfindungsgemäß durch den kennzeichnenden Teil des Hauptanspruchs gelöst. Vorteilhafte Weiterbildungen der Erfindung ergeben sich aus den Unteransprüchen.This object is achieved by the characterizing part of the main claim solved. Advantageous further developments of Invention result from the subclaims.

Durch die Versetzung der inneren Oberfläche der am Gehäusekörper ausgeführten Verstärkung, in deren Ebene die innere Oberkante der Nut liegt, unter die Ebene der Außenrandoberfläche, in der die äußere Kante der Nut liegt, entsteht ein zusätzlicher Hohlraum für den überflüssigen Schweißaustritt, der so bemessen ist, daß der überlaufende Teil des Schweißmaterials an der niedriger liegenden Oberfläche der Verstärkung haften bleibt und nicht in den Innenraum des Gehäuses gelangen kann.By displacing the inner surface of the on the housing body executed reinforcement, in the plane of which the inner upper edge of the Groove lies below the plane of the outer edge surface in which the outer edge of the groove, an additional cavity is created for the unnecessary perspiration, which is so dimensioned that the overflowing part of the welding material on the lower lying Surface of the reinforcement sticks and does not adhere to the interior of the housing can reach.

Die Erfindung wird an dem in den Zeichnungen dargestellten Beispiel näher erläutert. Es zeigtThe invention is based on that in the drawings illustrated example explained in more detail. It shows

Fig. 1 ein aus zwei erfindungsgemäßen Hohlkörperteilen zusammengesetztes Gehäuse in Ansicht, Fig. 1 is a composite of two hollow body parts according to the invention housing in view,

Fig. 2 das Gehäuse gemäß Fig. 1 in Draufsicht und Fig. 2 shows the housing of FIG. 1 in plan view and

Fig. 3 den Randbereich des Gehäuses gemäß Fig. 1 im Axialschnitt, in einem vergrößerten Maßstab. Fig. 3 shows the edge region of the housing of FIG. 1 in axial section, on an enlarged scale.

Das Gehäuse nach Fig. 1 und 2 besteht aus einem Deckel 1, an dem zwei Anschlußstutzen 11 und 12 für die Flüssigkeit angeordnet sind. Der im Randbereich angeordnete, durchgehend verlaufende Vorsatz ist mit 3 bezeichnet, die angedeutete Nut trägt das Bezugszeichen 4.The housing according to Fig. 1 and 2 consists of a cover 1, are disposed on the two connection pieces 11 and 12 for the liquid. The end-to-end attachment arranged in the edge region is designated by 3 , the indicated groove has the reference number 4 .

Wie Fig. 3 zeigt, ist im Randbereich des Deckels 1, auf der dem Gehäusekörper 2 zugewandten Seite, ein durchgehend verlaufender, bandförmiger Vorsatz 3 angeordnet, an dem ein während des Schweißvorgangs mit dem Gehäusekörper 2 in Berührung stehender, zur Zerschmelzung als Schweißmaterial vorgesehener Ansatz 5 angeformt ist. Die Querschnittsfläche dieses Ansatzes beträgt etwa 1/10 bis 1/100, vorzugsweise 1/30 der Querschnittsfläche des Vorsatzes 3.As shown in FIG. 3, in the edge region of the cover 1 , on the side facing the housing body 2 , there is a continuous, band-shaped attachment 3 , on which there is an attachment that is in contact with the housing body 2 during the welding process and is intended for melting as welding material 5 is molded. The cross-sectional area of this attachment is approximately 1/10 to 1/100, preferably 1/30, of the cross-sectional area of the attachment 3 .

Im Randbereich des Gehäusekörpers 2 ist eine durchgehend verlaufende Verstärkung 18 vorgesehen, in der auf der dem Gehäusedeckel 1 zugewandten Seite eine entsprechend dem Verlauf des bandförmigen Vorsatzes 3 angeordnete offene Nut 4 vorgesehen ist, deren lichter Querschnitt dem Querschnitt des Vorsatzes 3 angepaßt ist.In the edge region of the housing body 2 , a continuous reinforcement 18 is provided, in which an open groove 4 is arranged on the side facing the housing cover 1 , the open groove 4 being arranged in accordance with the course of the band-shaped attachment 3 , the clear cross section of which is adapted to the cross section of the attachment 3 .

Die Nut-Außenkante 15 liegt in der dem Deckel 1 zugewandten Ebene (Randbereichfläche 13) des Gehäusekörpers 2, während die Nut-Innenkante 16 in einer zu der Randoberfläche 13 parallel verlaufenden, in Richtung zum Gehäusekörperboden 10 hin um einen geringen Betrag versetzten Ebene 14 liegt.The groove outer edge 15 lies in the plane facing the cover 1 (edge area surface 13 ) of the housing body 2 , while the groove inner edge 16 lies in a plane 14 that runs parallel to the edge surface 13 and is offset by a small amount in the direction of the housing body bottom 10 .

Der zur Zerschmelzung als Schweißmaterial vorgesehene Ansatz 5 weist ein dreieckiges Querschnittsprofil auf und ist am unteren Ende des Vorsatzes 3 angeformt.The approach 5 provided for melting as welding material has a triangular cross-sectional profile and is formed on the lower end of the attachment 3 .

Die Ebene 14, in welcher die Nut-Innenkante 16 liegt, ist gegenüber der Randoberfläche 13 um einen Betrag versetzt, welcher etwa der Höhe des Ansatzes 5 entspricht. Die Masse des Ansatzes 5 ist so bemessen, daß seine Zerschmelzung in einer vorbestimmten Zeit erfolgt.The plane 14 , in which the groove inner edge 16 lies, is offset from the edge surface 13 by an amount which corresponds approximately to the height of the shoulder 5 . The mass of the approach 5 is dimensioned so that it melts in a predetermined time.

Claims (4)

1. Vorgefertigte, aus einem Kunststoff bestehende Hohlkörperteile, die unter gleichzeitiger Formvorgabe im zusammengesetzten Zustand in ihrem Randbereich durch Ultraschallschweißen zu einem Hohlkörper form- und kraftschlüssig verbindbar sind, wobei im Randbereich eines der Hohlkörperteile auf der dem anderen Hohlkörperteil zugewandten Seite ein durchgehend verlaufender, bandförmiger Vorsatz angeordnet ist, an dem ein während des Schweißvorgangs mit dem anderen Hohlkörperteil in Berührung stehender, zur Zerschmelzung als Schweißmaterial vorgesehener Ansatz angeformt ist, dessen Querschnittsfläche 1/10 bis 1/100 vorzugsweise 1/30 der Querschnittsfläche des Vorsatzes beträgt, und im Randbereich des anderen Hohlkörperteils eine durchgehend verlaufende Verstärkung vorgesehen ist, auf der dem ersten Hohlkörperteil zugewandten Seite eine entsprechend dem Verlauf des bandförmigen Vorsatzes angeordnete offene Nut vorgesehen ist, deren lichter Querschnitt dem Querschnitt des Vorsatzes angepaßt ist, dadurch gekennzeichnet, daß die Nut-Außenkante (15) in der Ebene der dem ersten Hohlkörperteil (Deckel 1) zugewandten Randbereichfläche (13) des Hohlkörpers (Gehäusekörper 2) liegt, während die Nut-Innenkante (16) in einer zu der Randoberfläche (13) parallel verlaufenden, in Richtung zum Hohlkörperboden (Gehäusekörperboden 10) hin um einen geringen Betrag versetzten Ebene (14) liegt.1.Prefabricated, made of a plastic hollow body parts, which can be positively and non-positively connected in their edge region by ultrasonic welding to form a hollow body, with a simultaneous shape specification, whereby in the edge region of one of the hollow body parts on the side facing the other hollow body part, a continuous, band-shaped Attachment is arranged on which is formed during the welding process in contact with the other hollow body part, intended for melting as welding material, whose cross-sectional area is 1/10 to 1/100, preferably 1/30 of the cross-sectional area of the attachment, and in the edge region of the another hollow body part, a continuous reinforcement is provided, on the side facing the first hollow body part there is an open groove arranged in accordance with the course of the band-shaped attachment, the clear cross section of which is adapted to the cross section of the attachment i st, characterized in that the groove outer edge ( 15 ) lies in the plane of the edge region surface ( 13 ) of the hollow body (housing body 2 ) facing the first hollow body part (cover 1 ), while the groove inner edge ( 16 ) lies in one of the edge surface ( 13 ) parallel, in the direction of the hollow body floor (housing body floor 10 ) by a small amount offset level ( 14 ). 2. Hohlkörperteile nach Anspruch 1, dadurch gekennzeichnet, daß der zur Zerschmelzung als Schweißmaterial vorgesehene Ansatz (5) ein dreieckiges Querschnittsprofil aufweist, und am unteren Ende des Vorsatzes (3) angeformt ist.2. Hollow body parts according to claim 1, characterized in that the attachment ( 5 ) provided for melting as welding material has a triangular cross-sectional profile, and is formed on the lower end of the attachment ( 3 ). 3. Hohlkörperteile nach Anspruch 1, dadurch gekennzeichnet, daß die Ebene (14), in welcher die Nut-Innenkante (16) liegt, gegenüber der Randoberfläche (13) um einen Betrag versetzt ist, welcher etwa der Höhe des Ansatzes (5) entspricht.3. Hollow body parts according to claim 1, characterized in that the plane ( 14 ), in which the groove inner edge ( 16 ) lies, is offset from the edge surface ( 13 ) by an amount which corresponds approximately to the height of the extension ( 5 ) . 4. Hohlkörperteile nach Anspruch 2, dadurch gekennzeichnet, daß die Masse des Ansatzes (5) so bemessen ist, daß seine Zerschmelzung in einer vorbestimmten Zeit erfolgt.4. Hollow body parts according to claim 2, characterized in that the mass of the projection ( 5 ) is dimensioned such that its melting takes place in a predetermined time.
DE19873712275 1987-04-10 1987-04-10 Plastic hollow article parts joinable by ultrasonic welding to form a hollow article Withdrawn DE3712275A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19873712275 DE3712275A1 (en) 1987-04-10 1987-04-10 Plastic hollow article parts joinable by ultrasonic welding to form a hollow article

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19873712275 DE3712275A1 (en) 1987-04-10 1987-04-10 Plastic hollow article parts joinable by ultrasonic welding to form a hollow article

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Publication Number Publication Date
DE3712275A1 true DE3712275A1 (en) 1988-10-27

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2657490A1 (en) * 1990-01-19 1991-07-26 Vape Sa Ets Method for putting a substrate fitted with a printed circuit into a sealed encapsulation
EP0528664A1 (en) * 1991-08-16 1993-02-24 JOHNSON &amp; JOHNSON VISION PRODUCTS, INC. Apparatus and method for releasably fusing mold lens pieces
DE4135876A1 (en) * 1991-10-31 1993-05-06 Ifm Electronic Gmbh, 4300 Essen, De Electronic switch, partic. a proximity switch - has sleeve of plastic housing stepped to accommodate mating end cover welded to it which reduces misalignment between housing sections
WO1998047690A1 (en) * 1997-04-24 1998-10-29 Filterwerk Mann + Hummel Gmbh Plastic hollow structure
EP1253395A1 (en) * 2001-04-27 2002-10-30 DENSO THERMAL SYSTEMS S.p.A. A plastic heat exchanger

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2657490A1 (en) * 1990-01-19 1991-07-26 Vape Sa Ets Method for putting a substrate fitted with a printed circuit into a sealed encapsulation
EP0528664A1 (en) * 1991-08-16 1993-02-24 JOHNSON &amp; JOHNSON VISION PRODUCTS, INC. Apparatus and method for releasably fusing mold lens pieces
GR920100324A (en) * 1991-08-16 1993-06-07 Johnson & Johnson Vision Prod Apparatus and method for releasably fusing mold lens pieces.
DE4135876A1 (en) * 1991-10-31 1993-05-06 Ifm Electronic Gmbh, 4300 Essen, De Electronic switch, partic. a proximity switch - has sleeve of plastic housing stepped to accommodate mating end cover welded to it which reduces misalignment between housing sections
WO1998047690A1 (en) * 1997-04-24 1998-10-29 Filterwerk Mann + Hummel Gmbh Plastic hollow structure
EP1253395A1 (en) * 2001-04-27 2002-10-30 DENSO THERMAL SYSTEMS S.p.A. A plastic heat exchanger

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