Dispensing apparatus for viscous liquids

(19)

(11)

EP 1 251 302 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	13.09.2006 Bulletin 2006/37

(43)	Date of publication A2:
	23.10.2002 Bulletin 2002/43

(21)	Application number: 02078045.8

(22)	Date of filing: 26.05.2000

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International Patent Classification (IPC):

F16K 1/36^(2006.01)

F16K 49/00^(2006.01)

(84)	Designated Contracting States:
	CH DE ES FR GB IT LI

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Priority:

28.05.1999 US 136461 P
25.05.2000 US 578366

(62)	Application number of the earlier application in accordance with Art. 76 EPC:
	00937930.6 / 1181106

(71)	Applicant: NORDSON CORPORATION
	Westlake, Ohio 44145-1119 (US)

(72)	Inventors:
	Colangelo, Paul K. Lawrenceville, Georgia 30044 (US) Petrecca, Peter J. Dunwoody, Georgia 30044 (US) Ramspeck, Alan Cumming, Georgia 30040 (US) Walker, Michael Smyrna, Georgia 30080 (US)

(74)	Representative: Findlay, Alice Rosemary
	Lloyd Wise Commonwealth House, 1-19 New Oxford Street London WC1A 1LW London WC1A 1LW (GB)

(54)	Dispensing apparatus for viscous liquids

(57) Apparatus (10) for dispensing viscous liquid, such as hot melt adhesive, includes a manifold (14) and a dispensing module (12). A valve includes a valve seat (107) having an orifice (106) and a sealing surface located around the orifice (106). The valve further includes a valve stem (108) movable between open and closed positions and having a recess (264) in one end and a sealing edge (266) located around the recess (264) (fig. 6A). A valve module (280) includes an integrated heating element (296) for providing localized heat to the adhesive immediately prior to dispensing (fig. 7).

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