DE102005026620A1 - Production of sealing elements, e.g. piston rod glands for gas springs, involves injection moulding from the radially outer part of the element so that there are no points of sprue separation on the inner part near the sealing lip - Google Patents
Production of sealing elements, e.g. piston rod glands for gas springs, involves injection moulding from the radially outer part of the element so that there are no points of sprue separation on the inner part near the sealing lip Download PDFInfo
- Publication number
- DE102005026620A1 DE102005026620A1 DE102005026620A DE102005026620A DE102005026620A1 DE 102005026620 A1 DE102005026620 A1 DE 102005026620A1 DE 102005026620 A DE102005026620 A DE 102005026620A DE 102005026620 A DE102005026620 A DE 102005026620A DE 102005026620 A1 DE102005026620 A1 DE 102005026620A1
- Authority
- DE
- Germany
- Prior art keywords
- sealing element
- injection
- sprue
- cavity
- sealing
- 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
- 238000007789 sealing Methods 0.000 title claims abstract description 70
- 238000000926 separation method Methods 0.000 title claims abstract description 14
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 9
- 238000001746 injection moulding Methods 0.000 title claims abstract description 8
- 210000004907 gland Anatomy 0.000 title abstract 2
- 239000000463 material Substances 0.000 claims abstract description 20
- 238000000034 method Methods 0.000 claims abstract description 14
- 238000002347 injection Methods 0.000 claims description 19
- 239000007924 injection Substances 0.000 claims description 19
- 230000003014 reinforcing effect Effects 0.000 claims description 7
- 239000013536 elastomeric material Substances 0.000 claims description 2
- 229920001169 thermoplastic Polymers 0.000 claims description 2
- 229920001187 thermosetting polymer Polymers 0.000 claims description 2
- 239000004416 thermosoftening plastic Substances 0.000 claims description 2
- 238000000465 moulding Methods 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 8
- 210000002414 leg Anatomy 0.000 description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000012778 molding material Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000001721 transfer moulding Methods 0.000 description 1
- 210000000689 upper leg Anatomy 0.000 description 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
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/27—Sprue channels ; Runner channels or runner nozzles
- B29C45/2701—Details not specific to hot or cold runner channels
-
- 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
- B29C45/02—Transfer moulding, i.e. transferring the required volume of moulding material by a plunger from a "shot" cavity into a mould cavity
-
- 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
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/0061—Moulds or cores; Details thereof or accessories therefor characterised by the configuration of the material feeding channel
- B29C33/0066—Moulds or cores; Details thereof or accessories therefor characterised by the configuration of the material feeding channel with a subdivided channel for feeding the material to a plurality of locations
-
- 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
-
- 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
- B29C45/0025—Preventing defects on the moulded article, e.g. weld lines, shrinkage marks
- B29C2045/0027—Gate or gate mark locations
-
- 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
- B29C45/1459—Coating annular articles
-
- 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
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/27—Sprue channels ; Runner channels or runner nozzles
- B29C45/2701—Details not specific to hot or cold runner channels
- B29C45/2708—Gates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2021/00—Use of unspecified rubbers as moulding material
-
- 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
- B29L2031/26—Sealing devices, e.g. packaging for pistons or pipe joints
-
- 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
- B29L2031/26—Sealing devices, e.g. packaging for pistons or pipe joints
- B29L2031/265—Packings, Gaskets
Abstract
Description
Die Erfindung betrifft ein Verfahren zur Herstellung eines Dichtungselements, insbesondere der Kolbenstangendichtung einer Gasfeder, das eine im wesentlichen ringförmige Grundkontur mit mindestens einer radial nach innen weisenden Dichtlippe aufweist, wobei die Herstellung des Dichtungselements durch einen Spritzgießvorgang erfolgt, indem spritzgießfähiges Material in die Kavität eines Spritzgießwerkzeugs eingespritzt wird, deren Wandungen die Außenkontur des zu fertigenden Dichtungselements aufweist. Des weiteren betrifft die Erfindung ein Dichtungselement.The Invention relates to a method for producing a sealing element, in particular the piston rod seal of a gas spring, the one essentially annular Having a basic contour with at least one radially inwardly pointing sealing lip, wherein the production of the sealing element by an injection molding process takes place by injection-moldable material into the cavity an injection mold is injected, the walls of the outer contour of the to be produced Has sealing element. Furthermore, the invention relates to a Sealing element.
Für viele technische Einsatzgebiete werden sog. Gasfedern benötigt. Eine Gasfeder ist ein hydropneumatisches Verstellelement, das aus einem Druckrohr besteht, in dem sich eine Kolbenstange samt Kolben befindet. Meist ist das Druckrohr mit komprimiertem Stickstoff gefüllt, der bei gleichem Druck beiderseits des Kolbens auf verschieden große Kolbenquerschnittsflächen wirkt. Daraus resultiert eine gewünschte Kraft in Ausschubrichtung der Kolbenstange aus dem Druckrohr. Die Kraft kann innerhalb gewisser Grenzen durch Wahl des Fülldrucks sowie durch die gewählte Geometrie der Gasfeder variiert werden.For many technical applications are called gas springs needed. A Gas spring is a hydropneumatic adjusting element that consists of a pressure tube exists, in which there is a piston rod together with the piston. Most of time is the pressure tube filled with compressed nitrogen, the at the same pressure on both sides of the piston acts on different sized piston cross-sectional areas. This results in a desired Force in Ausschubrichtung the piston rod from the pressure tube. The Force can within certain limits by choosing the filling pressure as well through the chosen Geometry of the gas spring can be varied.
Für das einwandfreie Funktionieren einer Gasfeder kommt es entscheidend auf das Dichtungselement, also auf die Stangendichtung, an, das – im Druckrohr angeordnet – die Kolbenstange zwischen dem Druckrohr-Inneren und der Umgebung abdichtet.For the impeccable Functioning of a gas spring, it is crucial to the sealing element, So on the rod seal, on, which - arranged in the pressure tube - the piston rod seals between the pressure tube interior and the environment.
Die Stangendichtungen werden zumeist durch Spritzgießen hergestellt, wobei verschiedene Verfahrensvariationen eingesetzt werden können. Bevorzugt ist beispielsweise das sog. Transfermolding-Verfahren, bei dem allerdings durch den heißen Transfertopf ein großer Anteil an Abfallmaterial entsteht. Genauso kann die in Rede stehende Stangendichtung auch im klassischen Spritzgießverfahren hergestellt werden. Insbesondere durch Spritzgießen über einen temperierten Kaltkanalverteiler kann der Abfallanteil deutlich reduziert werden.The Rod seals are usually made by injection molding, with various process variations can be used. Prefers is, for example, the so-called transfer molding method, in which, however through the hot transfer pot a large Share of waste material is formed. Likewise, the one in question Rod seal can also be produced by conventional injection molding. In particular by injection molding over a tempered cold runner manifold, the waste content can be significantly reduced become.
Stangendichtungen
für die
Kolbenstange von Gasfedern sind beispielsweise in der
Bekannt
ist, die Stangendichtung wie in
Das
plastifizierte Material gelangt vom Anguss
Es
hat sich herausgestellt, dass dies gewisse Nachteile zur Folge hat.
Insbesondere ist bei dieser Vorgehensweise nicht sichergestellt,
dass die Reibung der Dichtlippe
Der Erfindung liegt im Lichte der vorgenannten Nachteile die Aufgabe zugrunde, ein Verfahren der gattungsgemäßen Art zu schaffen, das sich durch ein verbessertes Reibungsverhalten und eine höhere Lebensdauer des gefertigten Dichtungselements auszeichnet.Of the Invention is in the light of the aforementioned disadvantages the task to provide a method of the generic type, which is due to an improved friction behavior and a longer service life of the finished sealing element.
Die Lösung dieser Aufgabe durch die Erfindung ist dadurch gekennzeichnet, dass das Einspritzen des spritzgießfähigen Materials in die Kavität von einem radial außenliegenden Bereich des Dichtungselements aus erfolgt.The solution this object by the invention is characterized in that injecting the injection moldable material into the cavity from a radially outer Area of the sealing element is made from.
Damit wird in vorteilhafter Weise erreicht, dass die radial innenliegende Dichtlippe und deren benachbarte Bereiche absolut frei von Störungen ist, die durch Trennstellen für Verbindungsabschnitte hervorgerufen werden können.In order to is achieved in an advantageous manner that the radially inner Sealing lip and its adjacent areas is absolutely free of interference, the by separating points for Connection sections can be caused.
Bevorzugt ist vorgesehen, dass das Einspritzen des spritzgießfähigen Materials in die Kavität über einen radial außerhalb der Kavität des Spritzgießwerkzeugs angeordneten Anguss erfolgt. Der Anguss ist dabei insbesondere als Ringanguss ausgebildet. Ferner kann vorgesehen sein, dass das Einspritzen des spritzgießfähigen Materials vom Anguss in die Kavität über eine Anzahl Verbindungsabschnitte erfolgt. Die Verbindungsabschnitte können dabei äquidistant über den Umfang des Ringangusses angeordnet sein.Prefers it is envisaged that the injection of the injection moldable material into the cavity over one radially outside the cavity of the injection mold arranged sprue takes place. The sprue is in particular as Ring sprue trained. Furthermore, it can be provided that the injection of the injection moldable material from the sprue into the cavity over one Number of connecting sections. The connecting sections can while equidistant about the Be arranged circumference of the ring gate.
Die Dicke der Verbindungsabschnitte – in Achsrichtung gemessen – können zwischen 1 % und 3 % des Außendurchmessers des Dichtungselements betragen. Indes kann die Breite der Verbindungsabschnitte in Umfangsrichtung gemessen bevorzugt zwischen 0,05 mm und 5 mm betragen.The thickness of the connecting sections - measured in the axial direction - can be between 1% and 3% of the outer diameter of the Dichtungsele amount. Meanwhile, the width of the connecting portions measured in the circumferential direction may preferably be between 0.05 mm and 5 mm.
Das Einspritzen des spritzgießfähigen Materials in die Kavität erfolgt bevorzugt von einem axialen Endbereich des zu fertigenden Dichtungselements aus. Dabei kann bei im Radialschnitt V-förmig ausgestaltetem Dichtungselements das Einspritzen des spritzgießfähigen Materials in die Kavität von dem axialen Endbereich des radial außenliegenden Schenkels aus erfolgen.The Injection of the injection moldable material into the cavity preferably takes place from an axial end region of the to be manufactured Sealing element. It can be designed in a radial section V-shaped Sealing element, the injection of the injection moldable material in the cavity of the axial end portion of the radially outer leg respectively.
Das erfindungsgemäße Dichtungselement, insbesondere die Kolbenstangendichtung einer Gasfeder, die eine im wesentlichen ringförmige Grundkontur mit mindestens einer radial nach innen weisenden Dichtlippe aufweist, zeichnet sich dadurch aus, dass der radial innenliegende Bereich des Dichtungselements frei von Trennstellen ist, an denen Anguss-Verbindungsabschnitte entfernt worden sind.The sealing element according to the invention, in particular the piston rod seal of a gas spring, which is a substantially annular Basic contour with at least one radially inwardly pointing sealing lip has, characterized in that the radially inner Area of the sealing element is free of separation points, where Runner connecting portions have been removed.
Mit Vorteil sind im radial außenliegenden Bereich des Dichtungselements Trennstellen vorhanden, an denen Anguss-Verbindungsabschnitte entfernt worden sind.With Advantage are in the radially outer Area of the sealing element separation points exist at which sprue connection sections have been removed.
Bevorzugt weist das Dichtungselement in einem Radialschnitt eine V-förmige Kontur auf. Weiterhin kann das Dichtungselement ein Verstärkungselement aufweisen.Prefers the sealing element has a V-shaped contour in a radial section on. Furthermore, the sealing element can be a reinforcing element exhibit.
Das Verstärkungselement kann dabei an der Verbindungsstelle der beiden Schenkel der V-förmigen Kontur angeordnet sein.The reinforcing element can be at the junction of the two legs of the V-shaped contour be arranged.
Das Dichtungselement kann aus thermoplastischem, duroplastischem oder elastomerem Material bestehen.The Seal member may be made of thermoplastic, thermoset or consist of elastomeric material.
Das gemäß dem Erfindungsvorschlag gefertigte und gestaltete Dichtungselement zeichnet sich durch eine höhere Lebensdauer und günstige Reibungseigenschaften aus. Die Funktionseigenschaften des Elements sind dadurch verbessert.The according to the invention proposal manufactured and designed sealing element is characterized by a higher Lifespan and cheap Friction properties. The functional properties of the element are improved.
In der Zeichnung ist ein Ausführungsbeispiel der Erfindung dargestellt. Es zeigen:In the drawing is an embodiment of Invention shown. Show it:
Eine
Ausgestaltung der Erfindung ist in den
Das
Dichtungselement
Das
Dichtungselement
Hierzu
ist ein zur Achse
Die
Wahl der Anzahl und Geometrie der Verbindungsabschnitte
Nach
der Füllung
der Werkzeugkavität über den
Anguss
Wie
in
Ferner
ist zu erkennen, dass das plastifizierte Material in einem axialen
Endbereich
Die
Trennstellen
- 11
- Dichtungselementsealing element
- 22
- Dichtlippesealing lip
- 33
- radial außenliegender Bereichradial outboard Area
- 44
- Angusssprue
- 55
- Verbindungsabschnittconnecting portion
- 66
- axialer Endbereichaxial end
- 77
- radial außenliegender Schenkelradial outboard leg
- 88th
- radial innenliegender Bereichradial inside area
- 99
- Trennstelleseparation point
- 1010
- Verstärkungselementreinforcing element
- 1111
- radial innenliegender Schenkelradial inside thigh
- 1212
- Achseaxis
- dd
- Dicke des Verbindungsabschnittsthickness of the connection section
- AA
- Achsrichtungaxially
- Da D a
- Außendurchmesserouter diameter
- BB
- Breite des Verbindungsabschnittswidth of the connection section
Claims (15)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005026620A DE102005026620B4 (en) | 2005-06-09 | 2005-06-09 | Method for producing a sealing element and sealing element |
KR1020060045468A KR100807461B1 (en) | 2005-06-09 | 2006-05-22 | Method for the production of a sealing element and sealing element |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005026620A DE102005026620B4 (en) | 2005-06-09 | 2005-06-09 | Method for producing a sealing element and sealing element |
Publications (2)
Publication Number | Publication Date |
---|---|
DE102005026620A1 true DE102005026620A1 (en) | 2006-12-14 |
DE102005026620B4 DE102005026620B4 (en) | 2012-05-16 |
Family
ID=37439975
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102005026620A Expired - Fee Related DE102005026620B4 (en) | 2005-06-09 | 2005-06-09 | Method for producing a sealing element and sealing element |
Country Status (2)
Country | Link |
---|---|
KR (1) | KR100807461B1 (en) |
DE (1) | DE102005026620B4 (en) |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2360432C3 (en) * | 1972-12-04 | 1977-04-21 | Nissei Plastics Industrial Co., Ltd., Nagano (Japan) | Injection blow molding device |
DE2605072C2 (en) * | 1976-02-10 | 1984-06-14 | INA Wälzlager Schaeffler KG, 8522 Herzogenaurach | Injection mold or compression mold for producing a seal from a thermoplastic or from rubber |
DE3702581A1 (en) * | 1987-01-29 | 1988-08-11 | Stabilus Gmbh | Sealing of a piston rod |
DE3725101A1 (en) * | 1987-07-29 | 1989-02-09 | Bauer Fritz & Soehne Ohg | PISTON FOR PISTON-CYLINDER UNIT |
DE19506479A1 (en) * | 1995-02-24 | 1996-08-29 | Suspa Compart Ag | Fluid-filled cylinder-piston rod unit, in particular gas spring |
DE19532085A1 (en) * | 1995-08-31 | 1997-03-06 | Kunststofftechnik Ros Gmbh & C | Dimensionally stable seal prodn., for antifriction bearings |
DE10213798A1 (en) * | 2001-03-28 | 2002-10-10 | Mitsubishi Cable Ind Ltd | Elongated plastic component molding method for production of rollers involves injection of melt through pin gates to a cylindrical chamber and an annular film gate to a annular cavity |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA1330438C (en) * | 1980-07-17 | 1994-06-28 | Willy Meyer | N-phenylsulfonyl-n'-pyrimidinyl-and-triazinylureas |
JP2003278812A (en) | 2002-03-27 | 2003-10-02 | Kayaba Ind Co Ltd | Gas spring |
-
2005
- 2005-06-09 DE DE102005026620A patent/DE102005026620B4/en not_active Expired - Fee Related
-
2006
- 2006-05-22 KR KR1020060045468A patent/KR100807461B1/en not_active IP Right Cessation
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2360432C3 (en) * | 1972-12-04 | 1977-04-21 | Nissei Plastics Industrial Co., Ltd., Nagano (Japan) | Injection blow molding device |
DE2605072C2 (en) * | 1976-02-10 | 1984-06-14 | INA Wälzlager Schaeffler KG, 8522 Herzogenaurach | Injection mold or compression mold for producing a seal from a thermoplastic or from rubber |
DE3702581A1 (en) * | 1987-01-29 | 1988-08-11 | Stabilus Gmbh | Sealing of a piston rod |
DE3725101A1 (en) * | 1987-07-29 | 1989-02-09 | Bauer Fritz & Soehne Ohg | PISTON FOR PISTON-CYLINDER UNIT |
DE19506479A1 (en) * | 1995-02-24 | 1996-08-29 | Suspa Compart Ag | Fluid-filled cylinder-piston rod unit, in particular gas spring |
DE19532085A1 (en) * | 1995-08-31 | 1997-03-06 | Kunststofftechnik Ros Gmbh & C | Dimensionally stable seal prodn., for antifriction bearings |
DE10213798A1 (en) * | 2001-03-28 | 2002-10-10 | Mitsubishi Cable Ind Ltd | Elongated plastic component molding method for production of rollers involves injection of melt through pin gates to a cylindrical chamber and an annular film gate to a annular cavity |
Also Published As
Publication number | Publication date |
---|---|
KR100807461B1 (en) | 2008-02-25 |
DE102005026620B4 (en) | 2012-05-16 |
KR20060128639A (en) | 2006-12-14 |
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OP8 | Request for examination as to paragraph 44 patent law | ||
R018 | Grant decision by examination section/examining division | ||
R020 | Patent grant now final |
Effective date: 20120817 |
|
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |