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Class 425/379.1 - Plural spaced


Subclass of Class 425 - Plastic article or earthenware shaping or treating: apparatus
Definition: Apparatus comprising multiple heating or cooling means,
No. of patents: 167
Last issue date: 01/19/2010


1          
NumberTitleIssue Date
7648358Plastic pellet forming apparatus
A molten plastic extruded from extruding means 10 is formed into a strand 50 by a die 40, passed through an inner side of a cylindrical guide 60 erected vertically, thereafter, the strand 50 is successively cut uniformly to a const...
01/19/2010
7361226Thermo-stable coating die design method and apparatus
A method of designing and the resulting thermally stable heated coating die apparatus, the die apparatus including a die having a die geometry and a heating system with heaters and temperature sensors. The method and resultant apparatus provides minimized temperatur...
04/22/2008
7238018Method and apparatus for heating plastic extruding die
A coil surrounding only the tip of nozzles of a plastic extruding die is provided. By passing a high frequency current through the coil to selectively heat only the tip of the nozzles. Further, in a plastic extruding die in which a high frequency current is passed t...
07/03/2007
7150842Method of extruding a mixture
A method of extruding a mixture made of a granulate, chips, or powder, etc. of a first thermoplastic and a second thermoplastic is described, the melting range of the first thermoplastic differing from the melting range of the second thermoplastic, using an extruder...
12/19/2006
7097443Extruder transition section
A method and system are provided that efficiently compound high levels of inorganic filler, processing fluid and silicone polymer at a commercial rate into homogeneous filled and devolatilized silicone compositions. In the method, filled silicone compositions are co...
08/29/2006
7090480Method and apparatus for molding ceramic sheet
A method and an apparatus capable of extrusion molding a comparatively wide, thin ceramic sheet using a screw extruder while suppressing the wrinkling thereof. The molding apparatus includes a screw-type extruder and a mold at the forward end of the extruder is used...
08/15/2006
7018187Apparatus for smoothing and cooling a synthetic resin web produced by a slit nozzle
An apparatus for smoothing and cooling of slit nozzle synthetic web passes the web following the smoothing gap between two rollers along a cooled surface and into contact with cold air introduced by cold air chamber open toward the roller surface. ...
03/28/2006
6984676Extrusion of synthetic wood material
An extrusion process is described for the extrusion of a synthetic wood material. The process includes a significantly higher compression ratio through which the extruded product must pass. The higher compression ratio results in significantly improved product quali...
01/10/2006
6976834Pelletizing die with even heat distribution and with polymer channel to orifice transition zone, process for orifice thermal stabilization and process for forming a pelletizing die with brazing and thin hard face layer
A pelletizing die includes a pelletizing die member with a die exit side exposed to cooling fluid and a die entry side for receiving polymer fed thereto. The die member has a plurality of polymer channels and a plurality of extrusion orifices connected to a respecti...
12/20/2005
6902383Apparatus containing cooling and warming devices for the preparation of a polymer solution
A novel apparatus for the preparation of a polymer solution includes a stirring device, an extruder connected to the stirring device, a cooling device connected to the extruder, and a warming device connected to the cooling device. The extruder is a fiber or membran...
06/07/2005
6790023Screw extruder and method of controlling the same
An extruder includes a barrel having a die attached to one end and at least one material inlet with a feeder for providing material to the material inlet. At least one screw is rotatively mounted in the barrel, and a motor is provided for driving the screw. A plural...
09/14/2004
6783349Apparatus for making multilayer optical films
Methods and apparatuses are provided for the manufacture of coextruded polymeric multilayer optical films. The multilayer optical films have an ordered arrangement of layers of two or more materials having particular layer thicknesses and a prescribed layer thicknes...
08/31/2004
6737009Process and system for producing multicomponent spunbonded nonwoven fabrics
A system and process for producing spunbond nonwoven fabric in which two or more polymeric components are separately melted and are separately directed through a distribution plate configured so that the separate molten polymer components combine at a multiplicity o...
05/18/2004
6716021Crosshead extrusion system
An extrusion system for extruding a layer of a plastic or rubber material onto a work piece without having to continuously adjust the extrusion system during the “set-up” mode to “full-run” mode, wherein the extruded layer exhibits a predetermined cross-sect...
04/06/2004
6705851Extrusion molding apparatus for a thin tube
An extrusion molding apparatus includes a molding die (3) through which a plasticized and kneaded raw material (1), composed of a synthetic resin material having high heat-resistance and strength, is extruded to form a tubular body (51). The tub...
03/16/2004
6572798Apparatus and method for spinning a multifilament yarn
An apparatus and method for spinning a synthetic yarn, wherein a heated polymeric melt is extruded through a spinneret and the resulting filaments are combined and wound to a package by means of a take-up device located downstream of the spinneret. A cool...
06/03/2003
6551545Method and apparatus for melt spinning a multifilament yarn
A method and an apparatus for melt spinning a multifilament yarn from a thermoplastic material, wherein a spinneret extrudes the thermoplastic material to strandlike filaments, which are initially in liquid form and then cooled to cause their solidificati...
04/22/2003
6478996Method and apparatus for producing a highly oriented yarn
A method and an apparatus for producing a highly oriented yarn (HOY) wherein the yarn is withdrawn from the nozzle of a spinneret at a withdrawal speed of at least 6,500 m/min. The filaments forming the yarn are drawn during their solidification, so that ...
11/12/2002
6474969Extrusion die and die assembly for underwater pelletizer
A die and a die assembly are disclosed for use in association with an underwater pelletizer. The die has unique coiled heating elements which allow for uniform heating of the extrusion orifices which pass through the die, reducing or eliminating polymer s...
11/05/2002
6447703Processes and systems for making synthetic bulked continuous filament yarns
Processes and apparatus are provided whereby the morphology of bulked continuous filament (BCF) yarns can be variably controlled. More specifically, according to the present invention, the BCF yarn is melt-spun, drawn and textured, most preferably in a on...
09/10/2002
6444151Apparatus and process for spinning polymeric filaments
A melt spinning apparatus for spinning continuous polymeric filaments including a first stage gas inlet chamber adapted to be located below a spinneret and optionally a second stage gas inlet chamber located below the first stage gas inlet chamber. The ga...
09/03/2002
6409494Device for the extrusion of multi-layer plastic films, boards or tubes
A device for extruding multilayer plastic films, boards or tubes with a feed block, whose inputs are fed with polymer melts and which conveys the polymer melts from its inputs via individual layer channels to a slotted passage, forming its output. Tempera...
06/25/2002
6409491Extrusion die assembly
Disclosed is an improved extrusion die assembly for controlling the flow of polymer in a melt extrusion process. The die assembly is useful for extruding low molecular weight polymer melts....
06/25/2002
6273701Heated die lips for controlling extruded polymer film thicknesses
Lip die structures include thrust developing elements spaced along one lip at first points for flexing those first points toward and away from the other lip and controlled by a thickness monitor spaced downstream along the web being produced from the lip ...
08/14/2001
6197239Extrusion apparatus and method for orienting plastic material by using an extrusion apparatus
An extrusion apparatus including at least one conical stator, and at least one conical rotor. The rotor is adapted for defibering or orienting a plastic material. The apparatus has an opening for receiving an elongate product or mandrel. The product or ma...
03/06/2001
6174474Device and method for producing microfilament yarns with high titer uniformity from thermoplastic polymers
A device and a method are disclosed, by means of which microfilament yarns made of synthetic polymers can be produced with increased uniformity of the titer, dye absorption and improved physical yarn properties at increased production speeds by means of a...
01/16/2001
6149847Method of and apparatus for the production of polyester yarn
Polyester yarn is made by melt spinning the polyester filaments which are then cooled at least to solidification and heated by counterflow with prestretching to a crystallinity in excess of 24%. The prestretched filaments are gathered and stretched to aft...
11/21/2000
6106263Extruder for manufacture of shaped bodies from plastics-filler mixtures having high filler content
An extruder forms shaped bodies from plastics-filler mixtures having a filler content of more than 50% by volume. The extruder comprises a product feed device, an outer mouthpiece and two barrels arranged coaxially between the product feed device and the ...
08/22/2000
6045347Apparatus for the production of plastic compound pipes
An apparatus for the production of plastic compound pipes has a pipe head and half shells completing each other in pairs to form a mold. The pipe head has a supporting ring, which is joined to a connecting piece of an extruder by a first adjusting device....
04/04/2000
6036895Process and device for the formation of monofilaments produced by melt-spinning
A continuous process and apparatus for the production of melt-spun monofilaments having a diameter of 60 μm to 2500 μm from fiber-forming polymers, wherein the polymer melt is spun into air from a spinning head, laterally quenched in a spinning cabinet ...
03/14/2000
6013223Process and apparatus for producing non-woven webs of strong filaments
An apparatus and process for extruding fiberforming thermoplastic polymers through spinning nozzles arranged in multiple rows are forming a non-woven web of high strength fibers. The molten fibers are accelerated by expanding hot gas flowing parallel to t...
01/11/2000
5980227Apparatus for shaping honeycomb structure
Apparatus for forming a honeycomb structure capable of adjusting a shaping speed of an outer skin of the honeycomb structure, thereby preventing a defect in the skin. The shaping device is constructed by a die (10) having slits (11) for formation of a hon...
11/09/1999
5976431Melt spinning process to produce filaments
Filament stress in a newly spun filament is reduced in that the air friction between the filament and the contiguous air layer is prevented or limited. For this purpose an air current is generated, flowing in the running direction of the yarn at a speed w...
11/02/1999
5965073Process and device for producing polyester yarns
Polyester yarn is produced from melt spun filament by prestretching the filaments individually in counterflow with a gaseous medium and then afterstretching the polyester filaments with an individual titer of 1.0 dtex to 7.5 dtex with a stretching ratio o...
10/12/1999
5948459Continuous cheese molding, chilling and cutting apparatus and method
The method and apparatus for continually molding, chilling and cutting cheese of the present invention utilizes an elongate molding tube having an inlet end and an outlet end, and a pump/movement mechanism for forcing cheese curd into the inlet end of the...
09/07/1999
5928587Process and apparatus for cooling melt spun filaments during formation of a multi-filament yarn
A process and apparatus for cooling freshly spun polymeric filaments as part of the formation of a multi-filament yarn, wherein the filaments are passed serially through a first cooling zone, a heating zone, and a second cooling zone. The resulting filame...
07/27/1999
5891379Roll forming of thermoplastics
A method and apparatus for forming fiber-reinforced thermoplastic materials which include the steps of arranging at least two sets of roll-forming dies in an operative relationship, introducing a portion of a fiber-reinforced thermoplastic element to said...
04/06/1999
5866050Method and spinning apparatus having a multiple-temperature control arrangement therein
A method and apparatus for spinning filaments of a polymeric material includes a first temperature control arrangement for heating a spin pack to a first predetermined reference temperature greater than the predetermined polymer inlet temperature such tha...
02/02/1999
5843489Screw for an extruder
An extruder that can control the temperature on the whole screw including the flight and avoid an extruded material form adhering on a surface of the screw, has a center hole with its front end closed formed in the center of the screw core, and an inner t...
12/01/1998
5756030Method and apparatus for extruding a rod of homogeneous plastic material
A method of extruding a homogeneous plastic rod substantially free of shrink voids, the method having the steps of: extruding a rod central portion of plastic material having a glass transition point and a Vicat softening point below the glass transition ...
05/26/1998
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