(19)
(11) EP 2 452 801 B8

(12) CORRECTED EUROPEAN PATENT SPECIFICATION
Note: Bibliography reflects the latest situation

(15) Correction information:
Corrected version no 1 (W1 B1)

(48) Corrigendum issued on:
13.12.2017 Bulletin 2017/50

(45) Mention of the grant of the patent:
06.09.2017 Bulletin 2017/36

(21) Application number: 11189171.9

(22) Date of filing: 15.11.2011
(51) International Patent Classification (IPC): 
B29C 47/06(2006.01)
F16L 9/12(2006.01)
 B29C 35/02(2006.01)
C08J 3/24(2006.01)

(54)

Production method of plastic pipe in layers

Verfahren zur Herstellung von Kunststoffrohren in Schichten

Procédé de production de tuyaux en plastique en couches

(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

(30) Priority: 16.11.2010 FI 20100374

(43) Date of publication of application:
16.05.2012 Bulletin 2012/20

(73) Proprietor: PexCor Manufacturing Company Inc.
Calgary, AB T2E 6M3 (CA)

(72) Inventor:
  • PexCor Manufacturing Company Inc.
    Calgary, AB T2E 6M3 (CA)

(74) Representative: Berggren Oy, Tampere et al
Visiokatu 1
33720 Tampere
33720 Tampere (FI)


(56) References cited: : 
EP-A1- 0 678 069
WO-A2-2007/139977
JP-A- 2005 280 225
US-A- 6 106 761
 WO-A1-99/57474
DE-A1- 3 903 436
US-A- 5 089 352
US-A1- 2004 020 547
   
  • BORCHARDT H ET AL: "EXTRUSION VON ROHREN AUS VERNETZTEM POLYETHYLEN (PE-X)", KUNSTOFFE INTERNATIONAL, CARL HANSER VERLAG, MUNCHEN, DE, vol. 89, no. 12, 1 December 1999 (1999-12-01), pages 74-76, XP000949627, ISSN: 0023-5563
   
Note: Within nine months from the publication of the mention of the grant of the European patent, any person may give notice to the European Patent Office of opposition to the European patent granted. Notice of opposition shall be filed in a written reasoned statement. It shall not be deemed to have been filed until the opposition fee has been paid. (Art. 99(1) European Patent Convention).