DE2263785C2 - Vorrichtung zum Blasformen eines Behälters aus thermoplastischem Kunststoff - Google Patents
Vorrichtung zum Blasformen eines Behälters aus thermoplastischem KunststoffInfo
- Publication number
- DE2263785C2 DE2263785C2 DE2263785A DE2263785A DE2263785C2 DE 2263785 C2 DE2263785 C2 DE 2263785C2 DE 2263785 A DE2263785 A DE 2263785A DE 2263785 A DE2263785 A DE 2263785A DE 2263785 C2 DE2263785 C2 DE 2263785C2
- Authority
- DE
- Germany
- Prior art keywords
- blow
- preform
- blow molding
- centering pin
- core
- 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.)
- Expired
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
- 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
- B29C45/36—Moulds having means for locating or centering cores
-
- 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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
- B29C49/06—Injection blow-moulding
-
- 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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/071—Preforms or parisons characterised by their configuration, e.g. geometry, dimensions or physical properties
-
- 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
- B29C45/0046—Details relating to the filling pattern or flow paths or flow characteristics of moulding material in the mould cavity
- B29C2045/0051—Flow adjustment by throttles
-
- 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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
- B29C2049/023—Combined blow-moulding and manufacture of the preform or the parison using inherent heat of the preform, i.e. 1 step blow moulding
-
- 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
- B29C2949/00—Indexing scheme relating to blow-moulding
- B29C2949/07—Preforms or parisons characterised by their configuration
- B29C2949/072—Preforms or parisons characterised by their configuration having variable wall thickness
-
- 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
- B29C2949/00—Indexing scheme relating to blow-moulding
- B29C2949/07—Preforms or parisons characterised by their configuration
- B29C2949/072—Preforms or parisons characterised by their configuration having variable wall thickness
- B29C2949/0725—Preforms or parisons characterised by their configuration having variable wall thickness at bottom portion
-
- 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
- B29C2949/00—Indexing scheme relating to blow-moulding
- B29C2949/07—Preforms or parisons characterised by their configuration
- B29C2949/073—Preforms or parisons characterised by their configuration having variable diameter
-
- 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
- B29C2949/00—Indexing scheme relating to blow-moulding
- B29C2949/07—Preforms or parisons characterised by their configuration
- B29C2949/073—Preforms or parisons characterised by their configuration having variable diameter
- B29C2949/0733—Preforms or parisons characterised by their configuration having variable diameter at body portion
-
- 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
- B29C2949/00—Indexing scheme relating to blow-moulding
- B29C2949/07—Preforms or parisons characterised by their configuration
- B29C2949/076—Preforms or parisons characterised by their configuration characterised by the shape
- B29C2949/0761—Preforms or parisons characterised by their configuration characterised by the shape characterised by overall the shape
- B29C2949/0762—Conical
-
- 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
- B29C2949/00—Indexing scheme relating to blow-moulding
- B29C2949/07—Preforms or parisons characterised by their configuration
- B29C2949/076—Preforms or parisons characterised by their configuration characterised by the shape
- B29C2949/0768—Preforms or parisons characterised by their configuration characterised by the shape characterised by the shape of specific parts of preform
- B29C2949/0769—Preforms or parisons characterised by their configuration characterised by the shape characterised by the shape of specific parts of preform characterised by the lip, i.e. very top of preform neck
-
- 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
- B29C2949/00—Indexing scheme relating to blow-moulding
- B29C2949/07—Preforms or parisons characterised by their configuration
- B29C2949/076—Preforms or parisons characterised by their configuration characterised by the shape
- B29C2949/0768—Preforms or parisons characterised by their configuration characterised by the shape characterised by the shape of specific parts of preform
- B29C2949/077—Preforms or parisons characterised by their configuration characterised by the shape characterised by the shape of specific parts of preform characterised by the neck
- B29C2949/0771—Wide-mouth
-
- 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
- B29C2949/00—Indexing scheme relating to blow-moulding
- B29C2949/07—Preforms or parisons characterised by their configuration
- B29C2949/076—Preforms or parisons characterised by their configuration characterised by the shape
- B29C2949/0768—Preforms or parisons characterised by their configuration characterised by the shape characterised by the shape of specific parts of preform
- B29C2949/078—Preforms or parisons characterised by their configuration characterised by the shape characterised by the shape of specific parts of preform characterised by the bottom
-
- 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
- B29C2949/00—Indexing scheme relating to blow-moulding
- B29C2949/07—Preforms or parisons characterised by their configuration
- B29C2949/076—Preforms or parisons characterised by their configuration characterised by the shape
- B29C2949/0768—Preforms or parisons characterised by their configuration characterised by the shape characterised by the shape of specific parts of preform
- B29C2949/078—Preforms or parisons characterised by their configuration characterised by the shape characterised by the shape of specific parts of preform characterised by the bottom
- B29C2949/0781—Preforms or parisons characterised by their configuration characterised by the shape characterised by the shape of specific parts of preform characterised by the bottom characterised by the sprue, i.e. injection mark
-
- 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
- B29C2949/00—Indexing scheme relating to blow-moulding
- B29C2949/20—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer
- B29C2949/22—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer at neck portion
-
- 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
- B29C2949/00—Indexing scheme relating to blow-moulding
- B29C2949/20—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer
- B29C2949/24—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer at flange portion
-
- 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
- B29C2949/00—Indexing scheme relating to blow-moulding
- B29C2949/20—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer
- B29C2949/26—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer at body portion
-
- 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
- B29C2949/00—Indexing scheme relating to blow-moulding
- B29C2949/20—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer
- B29C2949/28—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer at bottom portion
-
- 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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/08—Biaxial stretching during blow-moulding
- B29C49/087—Means for providing controlled or limited stretch ratio
-
- 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
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/25—Solid
- B29K2105/253—Preform
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Description
Die Erfindung betrifft eine Verrichtung zum Blasformen
eines Behälters aus thermoplastischem Kunststoff in einer Blasform, mit einem einen durch Spritzgießen
hergestellten Vorformling tragenden Blaskern, an dessen freiem Ende ein Zentrierstift angeordnet ist, an dem
der Boden des Vorformlings während des Blasformens im wesentlichen anliegt
Bei einer bekannten derartigen Vorrichtung (US-PS 33 49 155) ist keine Maßnahme getroffen, daß der Vorformling
bis zum Ende des Aufweitvorganges beim Blasformen tatsächlich an dem Zentrierstift gehalten
wird. Da nämlich der Zentrierstif· aus der Stirnebene
des Blaskerns hervorsteht, wird der Vorformling abgehoben, sobald Blasluft zwischen, das .Stirnende des Blaskerns
und den Vorformling gelangt In diesem Fall ist das Blasen defekter Behälter mit Löchern in einer Seitenwand
oder mit extrem dünner Wanddicke, während eine andere Stelle des Behälters eine Überdicke aufweist,
die Folge.
Die der Erfindung zugrundeliegende Aufgabe besteht darin, den Vorformling beim Blasformen eines verhältnismäßig
dünnwandigen Behälters zu zentrieren.
Diese Aufgabe ist erfindungsgemäß dadurch gelöst, daß der Zentrierstift von einer in der Stirnwand des
Blaskernes angeordneten Ringnut umgeben ist, deren Tiefe im wesentlichen der Länge des Zentrierstiftes entspricht
Auf diese Weise bleibt die Zentrierung des Vorformlings bis zum Ende des Aufweitvorganges beim Blasformen
erhalten, weil eine nach innen gerichtete Ring wulst des Vorformlings in die Ringnut des Blaskerns eingreift
Beim Blasformen werden deshalb zunächst die Seitenwände des Vorformlings aufgeweitet und die
Ringwulst des Vorformlings bleibt in der Ringnut stekken, bis gegen Ende des Blasvorgangs endlich der in
Nachbarschaft des Zentrierstiftes liegende Bereich des Vcrformlings an die Blasform angelegt wird. Dabei
wird der Vorformling nicht zwischen dem Zentrierstift und dem Boden der Blasform eingeklemmt, ,andern
der Zentrierstift endet vielmehr in einem geringen Abstand von der Bodenwand der Blasform. So wird das
Material nicht gequetscht Es lassen sich mit der erfindungsgemäßen Vorrichtung sehr dünnwandige Behälter
blasen, die auch gleichmäßige Wanddicken aufwei-
sen, weil die Zentrierung bis zum Ende des Blasvorgangs
aufrechterhalten werden kana
Ein Ausführungsbeispiel einer Vorrichtung nach der Erfindung zum Herstellen nicht ineinandersteckbarer
Behälter wird nachfolgend anhand der Zeichnung be-
schrieben. Es zeigen
F i g. 1 einen Längsschnitt der Vorrichtung vor dem Blasformen eines Vorformlings zu einem Behälter,
Fig.2 den Längsschnitt nach Fig. 1 während des
Blasformens und
F i g. 3 den Längsschnitt nach F i g. I nach dem Blasformen
des Behälters.
Zum Blasformen wird ein Vorformling 13 zum Blasformen eines Behälters 35 auf einen Blaskern 31 gesetzt,
dessen Gestalt im wesentlichen der innenform des Vorformlinge 13 entspricht Der Blaskern 31 weist einen
sich abwärts erstreckenden Zentrierstift 32, der eine Ausbuchtung 33 im Bodenabschnitt 14 des Vorformlings
13 aufnimmt
nenform auf, die der Außenform des herzustellenden
Behälters 35 entspricht Der Blaskern 31 mit dem darauf befindlichen Vorformling 13 muß so mit der Blasform 30
zusammenwirken, daß der Zentrierstift 32 eine Stellung dicht benachbart zur Innenfläche der Blasform 30 einnimmt
Zum Blasformen des Behälters 35 wird zwischen den Blaskern 31 und den Vorformling 13 Druckluft eingeblasea
Zu dem Blaskern 31 sind dazu mehrere Kanäle 36 um eine Heizpatrone 34 heraum angeordnet Blaska-
näle 37 sind im Blaskern 31 angeordnet und erstrecken
sich von jedem der Kanäle 36 zur Außenfläche des Blaskerns 31. Weitere Blaskanäle 41 erstrecken sich von der
Außenfläche des Blaskerns 31 in einen in dem Blaskern 31 angeordneten Hohlraum 11, der mit den Kanälen 36
in Verbindung steht
Claims (2)
1. Vorrichtung zum Blasformen eines Behälters aus thermoplastischem Kunststoff in einer Blasform,
mit einem einen durch Spritzgießen hergestellten Vorformling tragenden Blaskern, an dessen freiem
Ende ein Zentrierstift angeordnet ist, an dem der Boden des Vorformlings während des Blasformens
im wesentlichen anliegt, dadurch ge kennzeichnet.daß
der Zentrierstift (32) von einer in der Stirnwand des Blaskernes (31) angeordneten
Ringnut (10) umgeben ist, deren Tiefe im wesentlichen der Länge des Zentrierstiftes (32) entspricht
2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß am Grund der Ringnut (10) zusätzliche
Blaskanäle (41) münden.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US21427571A | 1971-12-30 | 1971-12-30 |
Publications (2)
Publication Number | Publication Date |
---|---|
DE2263785A1 DE2263785A1 (de) | 1973-07-12 |
DE2263785C2 true DE2263785C2 (de) | 1982-11-11 |
Family
ID=22798463
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE2263785A Expired DE2263785C2 (de) | 1971-12-30 | 1972-12-28 | Vorrichtung zum Blasformen eines Behälters aus thermoplastischem Kunststoff |
Country Status (4)
Country | Link |
---|---|
JP (1) | JPS5620173B2 (de) |
CA (1) | CA1011063A (de) |
DE (1) | DE2263785C2 (de) |
GB (1) | GB1406700A (de) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS52116462U (de) * | 1976-02-27 | 1977-09-03 | ||
DE3022529A1 (de) * | 1980-06-16 | 1982-01-14 | Henkel KGaA, 4000 Düsseldorf | Streckblasverfahren sowie vorformling und formwerkzeug zum durchfuehren des verfahrens |
NL1038283C2 (en) * | 2010-10-01 | 2012-04-03 | Naber Beheer B V | Method for manufacturing a plastic drinking glass. |
US9358710B2 (en) | 2010-12-09 | 2016-06-07 | Husky Injection Molding Systems Ltd. | Preform and a mold stack for producing the preform |
EP3269530B1 (de) * | 2015-03-13 | 2019-12-04 | Discma AG | Blasformvorrichtung |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3349155A (en) * | 1966-11-22 | 1967-10-24 | Emery I Valyi | Method and apparatus for molding plastic bottles |
JPS4332234Y1 (de) * | 1968-04-08 | 1968-12-27 |
-
1972
- 1972-12-13 CA CA158,756A patent/CA1011063A/en not_active Expired
- 1972-12-28 JP JP13038772A patent/JPS5620173B2/ja not_active Expired
- 1972-12-28 DE DE2263785A patent/DE2263785C2/de not_active Expired
- 1972-12-29 GB GB5999272A patent/GB1406700A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE2263785A1 (de) | 1973-07-12 |
CA1011063A (en) | 1977-05-31 |
JPS5620173B2 (de) | 1981-05-12 |
JPS4873470A (de) | 1973-10-03 |
GB1406700A (en) | 1975-09-17 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OD | Request for examination | ||
D2 | Grant after examination | ||
8339 | Ceased/non-payment of the annual fee |