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Class Information
Number: 264/560
Name: Plastic and nonmetallic article shaping or treating: processes > Direct application of fluid pressure differential to permanently shape, distort, or sustain work > Production of continuous or running length > Including liquid contact > With calibration, mandrel forming or with internal guide
Description: Processes in which a sizing operation follows the initial forming operation or forming takes place with the use of an internal forming or supporting member.

Patents under this class:
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Patent Number Title Of Patent Date Issued
8641946 Extrudate having capillary channels Feb. 4, 2014
8287786 Method of cooling extrusions by circulating gas Oct. 16, 2012
7879283 Sizer for forming shaped polymeric articles and method of sizing polymeric articles Feb. 1, 2011
7780430 Mandrel, and apparatus and process for resin film production with mandrel Aug. 24, 2010
7140855 Inner mandrel Nov. 28, 2006
6813576 Method and device for cooling and calibrating a section Nov. 2, 2004
6478992 Extrusion molding method for a thin tube Nov. 12, 2002
6403016 Vacuum extrusion system and method Jun. 11, 2002
6368547 Method for producing an extruded hollow plastic section Apr. 9, 2002
6264874 Method of controlling the diameter of a clear extruded tube Jul. 24, 2001
6213752 Vacuum extrusion system and method Apr. 10, 2001
6214283 Method for treating an extruded plastic section and extrusion installation therefor Apr. 10, 2001
6096258 Method and apparatus for forming a cellulose article including solvent recovery means Aug. 1, 2000
6036468 Vacuum extrusion system Mar. 14, 2000
RE36585 Process for cooling and calibrating elongated objects made of plastic together with cooling and calibrating device Feb. 29, 2000
6019934 Hollow extrusion using internal coolant Feb. 1, 2000
5925307 Method for forming oriented plastic pipe Jul. 20, 1999
5811038 Method of blending components for porous plastic pipe processing Sep. 22, 1998
5667813 Mandrel for cooling Sep. 16, 1997
5658525 Cellulose food casing manufacturing method Aug. 19, 1997
5607638 Vacuum sizing apparatus and method of using same Mar. 4, 1997
5593703 Mandrel for cooling Jan. 14, 1997
5578328 Apparatus for the cooling of extruded plastic profiles or sections Nov. 26, 1996
5516270 Sizing tool May. 14, 1996
5514325 Process for cooling and calibrating elongated objects made of plastic together with cooling and calibrating device May. 7, 1996
5505897 Method for forming a pipe Apr. 9, 1996
5484557 Method of and apparatus for the cooling of extruded plastic profiles or sections Jan. 16, 1996
5424023 Apparatus and method of forming curved extruded products Jun. 13, 1995
5261988 Making large-diameter pipe Nov. 16, 1993
5236325 Apparatus for producing an extruded profile with thrust-resistant spacer Aug. 17, 1993
5225139 Process for the manufacturing of a mechanically conditioned thermoplastic film with biaxially recoverable stresses Jul. 6, 1993
4898924 Process for the production of biaxially oriented rigid rod heterocyclic liquid crystalline polymer films Feb. 6, 1990
4886634 Process and apparatus for the production of an extruded, stretched, seamless tube Dec. 12, 1989
4750873 Device for the production of a tubular object Jun. 14, 1988
4708841 Pipe plug apparatus and method for its use Nov. 24, 1987
4663107 Method for the production of thermoplastic tubes May. 5, 1987
4526526 Apparatus for internal cooling in extrusion of tube-shaped objects Jul. 2, 1985
4468369 Process for the vacuum calibration of profiled articles made of thermoplastic synthetic resin Aug. 28, 1984
4434128 Method and apparatus for stretching thermoplastic polymer films Feb. 28, 1984
4411613 Apparatus for the vacuum calibration of profiled articles made of a thermoplastic synthetic resin Oct. 25, 1983
RE31133 Extrusion methods Jan. 25, 1983
4354997 Heat shrinkable film and process for preparing the same Oct. 19, 1982
4308192 Method and apparatus for forming double-layer hollow film Dec. 29, 1981
4294796 Extrusion processes and apparatus for quenching tubes Oct. 13, 1981
4287151 Method and apparatus for high speed extrusion of thermoplastic materials Sep. 1, 1981
4255381 Textured surface polypropylene film Mar. 10, 1981
4238435 Plastic extrusion Dec. 9, 1980
4220620 Quench bath Sep. 2, 1980
4203942 Process for tubular water-bath polypropylene films May. 20, 1980
4185148 Process for producing the polypropylene film for electrical appliances Jan. 22, 1980

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