The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 15, 2005
Filed:
Jan. 04, 2001
Georg Michael Ickinger, Graz, AT;
Georg Michael Ickinger, Graz, AT;
Sulzer Chemtech AG, Winterthur, CH;
Abstract
A method introduces additives into flowing or fluidised media. The spatially predetermined position of the additives in the flowing material, also called fluid bed, is obtained by controlling the pulsating injection, The introduction and exact dosing of additives, that is hardeners, dyes, gas producers and softener for instance, into a liquid plastic stream or metal stream () for instance, or the fluid bed of bulk material, such as powder, granules and pellets, is carried out by means of an injector. The invention is used in melting units, in hot channel systems, in tools, componens of tools and injection moulding machines, extruders, injection moulding, pelleting, burner and injection arrangements. The nozzle needle () of at least one nozzle (), respectively, is variable and highly precisely moved for the introduction by means of a device and in such a way that additive () is dosed exactly in relation to the volume flow of the medium and that a pulsating stream () is injected into the medium flowing past, by means of at least one well-aimed nozzle opening (). The additives are dosed by means of a pressure that can be variably adjusted by pulse width and pulse frequency. The desired homogenous distribution is obtained by the penetrating injection jet () during compounding.