Apparatus for forming crystalline polymer pellets
January 20, 2015. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 2268888 Apparatus for producing drops or portions of liquid and viscous materials and for producing pellets therefrom Extrusion apparatus Apparatus for the production of granules from two-phase mixtures Apparatus for the production of granules Device for extruding flowable substances Method and apparatus for producing pastilles Process and apparatus for the purification of substances Pellet forming apparatus Process for pelletizing ultra high melt flow crystalline polymers and products therefrom Patent #: 5340509 InventorsAssigneeApplicationNo. 376599 filed on 01/20/1995US Classes:425/8, By slinger or rotating liquid comminutor264/8, Utilizing centrifugal force or rotating forming zone264/13, By extrusion spraying or gravity fall through orifice264/142, By cutting at point of extrusion425/143, Temperature control425/377, Including product handling means425/382R, Plural orifices425/382.3Including additional rotating means downstream of the primary pressurizing meansExaminersPrimary: Vargot, Mathieu D.Foreign Patent References
International ClassB01J 004/02AbstractThis invention relates to a process and apparatus for forming a polyester polymer into particles. More particularly, this invention relates to a process and apparatus for forming crystalline, uniform pellets from an amorphous polyester melt. The polyester pellets have utility, for example, as feedstock for a process for producing higher molecular weight polyesters.Other References
Field of SearchMEANS MAKING PARTICULATE MATERIAL DIRECTLY FROM LIQUID OR MOLTEN MATERIALBy slinger or rotating liquid comminutor Temperature control Including product handling means Including heating or cooling means Plural orifices Including additional rotating means downstream of the primary pressurizing means Plural distinct shaping orifices Single inlet, plural shaping orifices FORMATION OF SOLID PARTICULATE MATERIAL DIRECTLY FROM MOLTEN OR LIQUID MASS (E.G., LIQUID COMMINUTING) Utilizing centrifugal force or rotating forming zone By extrusion spraying or gravity fall through orifice By cutting at point of extrusion | |
