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| Number | Title | Issue Date |
| 7934922 | Device and method for compression moulding plastic articles The invention relates to a device for moulding a plastic article in which the article is obtained by the compression of a quantity of plastic material (3) in the molten state between the two parts of a mould, comprising at least one supply of plastic material... | 05/03/2011 |
| 7396223 | Forming jig and method for producing formed body using same A forming jig comprises a rectification plate having two or more material supply holes, a drawing die installed below the rectification plate to specify the external configuration of the formed body produced from a material, and a floating die in which two or more w... | 07/08/2008 |
| 7384254 | Coextrusion adapter A coextrusion adapter for an extrusion installation with extruders and a tool for producing a composite coextrusion structure of thermoplastic material. The coextrusion adapter has a central conduit with an end at an inlet side for connecting an extruder and an end ... | 06/10/2008 |
| 7374412 | Extrusion head In an extrusion head and an extrusion method for the production of a tubular multilayer preform the extrusion head includes at least two feed paths for feeding plasticised plastic material from one or more extruders to an annular passage arrangement. The annular pas... | 05/20/2008 |
| 7367791 | Device for producing annular or arcuate magnet A device capable of producing an annular magnet or arcuate magnet with excellent dimensional accuracy and magnet performance, of which the mass is not greatly scattered. The device for producing the annular magnet, for example, includes a preforming section for obta... | 05/06/2008 |
| 7364421 | Method of making retroreflective sheeting and slot die apparatus The invention relates to a method of making retroreflective sheeting and other articles prepared from casting a fluid synthetic resin onto a tool having a microstructured surface with a slot die apparatus. The invention further relates to a slot die apparatus. ... | 04/29/2008 |
| 7311506 | Actuator base nubbin alignment In accordance with the teachings of the present invention, a mold comprises a nubbin positioned within the mold, and an actuator positioned within the mold to align the nubbin. The actuator may be implemented with a piezoelectric material, a magnetorestrictive mater... | 12/25/2007 |
| 7296991 | Adjustable extruder die assembly die lip adjustment apparatus An annular thermoplastic foam extrusion die assembly has a first die body with a first die lip and a second die body with a second die lip. The first die body includes a trench having an undercut, sloped back wall and a circumferential groove opposite the back wall.... | 11/20/2007 |
| 7296992 | Multiple layer combining adapter This invention relates to the field of multiple layer plastic extrusion, and more particularly to assemblies in which thin or micro-layers of polymer material are formed which polymer material may be from two or more individual extruders, and delivered to a multilay... | 11/20/2007 |
| 7278844 | Extrusion head for blow molding A blow head for extruding a tubular plastic preform from an outlet gap between a fixed die core and a die body allows a change of the width of the outlet gap as a function of the circumference using light and small actuating devices, e.g., double-acting actuator cyl... | 10/09/2007 |
| 7267541 | Extruder head An extruder head for extrusion blow-molding plastic containers includes a ring gap nozzle with a mandrel and a ring-shaped nozzle body. An elastically deformable sleeve is arranged on an end of the nozzle outlet side and defines a gap width which can be varied by ax... | 09/11/2007 |
| 7264457 | Flow distributor for die tooling of pipe mold equipment with remote extruder Equipment (1) used in the molding or plastic pipe includes die tooling (3) provided with a plastic flow distributor (25) at the upper end of the die tooling. The plastic flow distributor has adjustable flow to provide an even distribution of pla... | 09/04/2007 |
| 7264461 | Externally adjustable insert for extrusion manifold Externally adjustable extrusion insert for a multiple-orifice extrusion manifold. Adjustments to an extrusion insert precisely controls the extrusion path leading to one or more extrusion orifices of the manifold. Each insert is adjusted to reduce or eliminate varia... | 09/04/2007 |
| 7194884 | Process and apparatus for manufacturing lithium or lithium alloy thin sheets for electrochemical cells A method of manufacturing lithium or lithium alloy anodes for electrochemical cells by an extrusion process wherein a lithium or lithium alloy ingot is formed into a thin sheet. The method is adapted to extrude thin sheet having a width exceeding the diameter of the... | 03/27/2007 |
| 7195471 | Blowing head for extruding films, comprising clamping elements containing ducts for cooling air Tubular film die head for extruding single-layer or multi-layer film which has at least the following features: a substantially annular die gap, fastening elements which fix at least two components with respect to one another which together border areas bearing plas... | 03/27/2007 |
| 7175415 | Moulding system, in particular a calibration die The invention relates to a moulding system (3), in particular a calibration die (17), for an extrusion plant, with preferably parallel inlet and outlet faces (28, 29) spaced at a distance apart and with side faces (30, 31, 32, 33) extendi... | 02/13/2007 |
| 7172403 | Apparatus for preparing a gypsum wallboard core A gypsum wallboard core, and methods and apparatus for making the same are disclosed. Methods of making a gypsum wallboard core include extruding a gypsum slurry containing water, gypsum, slip agents, water-reducing agents, surfactants and, optional additives, throu... | 02/06/2007 |
| 7163388 | Method and apparatus for incorporating lumens into the wall of a tubular extrusion A polymer extrusion head for forming continuous shapes having one or more lumens therein. The head includes an extrusion mandrel and die. At least one lumen pipe is disposed radially through a port in the die to intersect the polymer flow in the annular region betwe... | 01/16/2007 |
| 7160094 | Die assembly A die assembly (10) having a first die part (12), which includes a first lip (16) that, in combination with a second lip (18), defines a feed gap (20). The first die part (12) also includes a rear portion (22), a fron... | 01/09/2007 |
| 7156639 | Device for producing filaments A device for producing filaments, in particular, from a thermoplastic polymer, wherein the filaments emerge from the spinneret openings of a spinneret plate. A distribution device is provided for distributing the molten polymer being supplied over a preliminary spin... | 01/02/2007 |
| 7150614 | Horizontal vacuum chamber seal control device Disclosed is an apparatus and a corresponding method for producing a continuous foamed extrudate product in which the extrusion and initial expansion of the foamed extrudate is conducted within a chamber under a partial vacuum. The foamed extrudate is then removed f... | 12/19/2006 |
| 7140865 | Apparatus for making a corrugation-free foam A method and apparatus for extruding a corrugation-free polystyrene foam with 100% carbon dioxide as the blowing agent by extruding the extrudate through an annular die opening so that it contacts a choke ring inner surface. A foam made with the apparatus according ... | 11/28/2006 |
| 7134308 | Extrusion press tool for producing a cylindrical body consisting of a plastic mass The invention relates to an extruder tool for producing a cylindrical body which consists of plastic mass and has at least one recess extending in the interior thereof. The extruder tool comprises an extruder nozzle which has a narrowing region and a nozzle mouthpie... | 11/14/2006 |
| 7135063 | Resilient biodegradable packaging materials Biodegradable starch-based extruded products and methods of manufacturing those products are provided. In particular, extruded starch products processed by compression, stretching or compression and stretching provide excellent flexibility, pliability, dimensional s... | 11/14/2006 |
| 7131829 | Spiral die assembly A spiral die assembly can obtain a homogeneous pipe body, an inflation film with/without drawing and a functional film by dispersing molten resin homogeneously, and the spiral die assembly is capable of being applied to various molten resins and extruding conditions... | 11/07/2006 |
| 7108817 | Die, especially for extruding green ceramic foils A die for producing flat sections, in particular a flat-sheet die for extrusion of ceramic green films, has a slot-shaped die outlet which opens in an outlet orifice. The height of the slot-shaped die outlet narrows beginning in the immediate vicinity of the outlet ... | 09/19/2006 |
| 7104778 | International die deckle with flow control An apparatus (10) for changing the width of an internal die cavity (12) to accommodate product width changes has a die end plate (14) with a front surface facing the internal die cavity (12), a rear surface and defines an opening that ext... | 09/12/2006 |
| 7101167 | Method and a device for manufacturing a tool and a tool made by the method A rotary tool such as a helix drill and an end mill for example, is manufactured by forming a blank by an extrusion process, and then sintering the blank. During the extrusion, a mixture is passed through a die which provides a cylindrical shape to the outer periphe... | 09/05/2006 |
| 7101168 | Releasing undercut moulded containers after a thermoforming process The invention relates to a device for forming a number of thin-walled objects by means of a blow-moulding process from a layer of material which is deformable when heated, comprising: a lower mould with cavities (6) arranged therein, wherein the shape of each... | 09/05/2006 |
| 7074030 | Scraping assembly for an extrusion die and method of use therefor An apparatus for scraping a lip of an extrusion die includes a scraping surface pressed against the lip. The scraping surface is movable along the lip of the die to clean debris, such as hardened thermoplastic, from the surface of the lip. The scraping surface may b... | 07/11/2006 |
| 7074027 | Extrusion die and method for forming dual wall corrugated plastic pipe and dual wall plastic pipe having a foam annular core Extrusion dies for forming dual wall corrugated plastic pipe and dual wall plastic pipe having a foam annular core that provides homogenous melt flow to each axially displaced orifice by means of an individual concentric spiral mandrel are disclosed. Spiral mandrels... | 07/11/2006 |
| 7056112 | Extrusion die and method for using the same An improved extrusion die and a method for using the same that minimizes the deflection of the die exit by providing the walls of the extrusion die with areas of increasing thickness that increase from the die ends to a central location. The die wall thickness is va... | 06/06/2006 |
| 7052267 | Extrusion device for manufacturing a product based on a rubber mix An extrusion device (1) for manufacturing a product based on a rubber mix, which comprises a rotary roller (5), an inlet orifice (15) for the rubber mix and a vault (6) partially circumferentially covering the external surface (51)... | 05/30/2006 |
| 6991448 | Apparatus for extruding honeycomb bodies An extrusion apparatus which satisfactorily adjusts differences in skin-body flow rates at multiple locations around the die, and allows for the external manipulation of the interior components controlling batch flow, during the production without having to stop man... | 01/31/2006 |
| 6979189 | Apparatus and method for adjusting component features An apparatus and method to adjust the dimensions of thermoplastic components following passage of the component through final processing in a fixture. The invention particularly relates to an apparatus for maintaining product tolerances on thermoplastic components t... | 12/27/2005 |
| 6946090 | Process for making a corrugation-free foam A method for extruding a corrugation-free polystyrene foam with up to 100% carbon dioxide as the blowing agent by extruding the extrudate through an annular die opening so that it contacts a choke ring inner surface. A foam made with the apparatus according to the i... | 09/20/2005 |
| 6935217 | Projectile jacket having frangible closed end and method of manufacture A frangible projectile for gun ammunition wherein the projectile includes a core 96 formed from one or more metal powders which are pressed into a self-supporting compact and incorporated into a metal jacket 10. The metal jacket is initially cup-shaped... | 08/30/2005 |
| 6926512 | Apparatus for extruding foamed polypropylene sheet having improved surface appearance A coat hanger extrusion die wherein the aperture of the die land widens along the extrusion axis of the die to the die exit opening, thereby forming an expansion zone. ... | 08/09/2005 |
| 6926858 | Method and apparatus for regular division of molten extrusion flow A blown film die divides a flow of material into two flows with higher and lower flow portions and recombines the flow by combining higher flow portions with lower flow portions. The flow can be divided in circumferential channels between an annular feed ring and an... | 08/09/2005 |
| 6926509 | Apparatus for extruding tubing having a variable wall thickness An extruder apparatus and method for producing an extruded tubing having varying inner dimensions without changing the outer dimensions. The tubing is forced from the die face of an extrusion head having an extruder die and an internal mandrel determining the outer ... | 08/09/2005 |
