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Class Information
Number: 264/559
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 > Including internal liquid contact > With downward movement of workpiece
Description: Processes in which the workpiece is caused to travel in a downward direction in or into a liquid bath after an initial forming step or the workpiece is caused to travel in a downward direction into annular liquid contact after an initial forming step.

Patents under this class:

Patent Number Title Of Patent Date Issued
8512627 Method for the production of an asymmetric hollow fiber membrane Aug. 20, 2013
7585454 Process of and apparatus for making an insulation product Sep. 8, 2009
6821591 Seamless tubular film and methods and devices for producing a seamless tubular film materials Nov. 23, 2004
6565796 Method and apparatus for use in manufacture of cellulose casing May. 20, 2003
6444161 Mandrel structure for use in manufacture of cellulose food casing Sep. 3, 2002
6319457 Method for extruding tubular film Nov. 20, 2001
6264874 Method of controlling the diameter of a clear extruded tube Jul. 24, 2001
6113842 Method of making blown films of cellulose Sep. 5, 2000
6033618 Process and apparatus for producing a seamless cellulose-based tubular film by extrusion Mar. 7, 2000
6017474 Highly permeable polyethersulfone hollow fiber membranes for gas separation Jan. 25, 2000
6015516 Ultrathin high-performance hollow fiber membranes Jan. 18, 2000
6001288 Process for producing a hollow fiber membrane having a hydrophobic coating Dec. 14, 1999
5942167 Method of making a cellulose food casing including solvent recovery Aug. 24, 1999
5910274 Method of preparing membranes from blends of polymers Jun. 8, 1999
5820934 Process for producing viscose hoses by precipitation Oct. 13, 1998
5766540 Cellulose food casing manufacturing method Jun. 16, 1998
5759478 Mandrel structure for use in manufacture of cellulose food casing Jun. 2, 1998
5658524 Cellulose article manufacturing method Aug. 19, 1997
5480598 Process of and apparatus for making hollow fibers Jan. 2, 1996
5451364 Cellulose food casing manufacturing method Sep. 19, 1995
5298202 Double bubble process for making strong, thin film Mar. 29, 1994
5225139 Process for the manufacturing of a mechanically conditioned thermoplastic film with biaxially recoverable stresses Jul. 6, 1993
5171493 Process for extruding semi-permeable membrane having separate hollow passageways Dec. 15, 1992
5160672 Method for production of hollow fiber membrane Nov. 3, 1992
5089187 Process for producing a semi-permeable membrane by extrusion Feb. 18, 1992
4898924 Process for the production of biaxially oriented rigid rod heterocyclic liquid crystalline polymer films Feb. 6, 1990
4659532 Internal dusting of film tubes composed of thermoplastics Apr. 21, 1987
4536365 Process for the manufacture of equally biaxially oriented film Aug. 20, 1985
4329163 Method for forming and treating kinky fibers from glass May. 11, 1982
4317794 Process for the continuous manufacture of fiber-reinforced cellulose hydrate tubing and equipment for carrying out the processes Mar. 2, 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
4274855 Method and apparatus for forming and treating kinky fibers from glass Jun. 23, 1981
4252550 Method and apparatus for the integration of newly formed filaments into a continuous strand Feb. 24, 1981
4203942 Process for tubular water-bath polypropylene films May. 20, 1980
T984006 Cooling tubular extrudates Jul. 3, 1979
4062916 Production of tubular film Dec. 13, 1977
4048428 Method for preparing a film of vinylidene chloride polymer Sep. 13, 1977
4022860 Method for producing arcuately curved film casings May. 10, 1977
3993723 Cooling thermoplastic tubes Nov. 23, 1976
3976410 Extrusion processes and apparatus therefor Aug. 24, 1976

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