| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 264209100 | Hollow article | 48 |
| 20080258334 | Method and Device for the Production of At Least One Container Filled With a Medium - The invention relates to a method and to a device for the production of at least one container filled with a medium, said container being made of a plastic material. The plastic material is extruded in a tubular manner and is applied to the inner walls of a moulding tool in order to mould the respective container by means of differential pressure. The respective container is filled with a medium via the inlet opening with the aid of a filling device and the inlet opening of the container is closed by a lock. A coextrusion method is used for the extrusion of different plastic materials, whereby the respective container is made at least partially of several layers of plastic materials. At least one of the layers is used at a barrier layer. | 10-23-2008 |
| 20080315453 | PROCESS FOR THE PRODUCTION OF POLYESTER NANOCOMPOSITES - A method for dispersing sepiolite-type clay particles in a polyester matrix by melt-compounding a mixture of: sepiolite-type clay, at least one linear polyester oligomer, and at least one polyester polymer to produce a nanocomposite composition; and, optionally, subjecting said nanocomposite composition to solid state polymerization to increase polyester molecular weight. Further described is a method for preparing a polyester nanocomposite composition from a masterbatch, comprising melt-compounding a mixture of: sepiolite-type clay, at least one polyester oligomer, and at least one polyester polymer to produce a nanocomposite composition containing a greater concentration of sepiolite-type clay than is desired in the final resin composition; optionally, subjecting said nanocomposite composition to solid state polymerization to increase the polyester molecular weight; and further melt compounding said nanocomposite composition with polyester polymer and, optionally, additional ingredients. | 12-25-2008 |
| 20090127734 | METHOD FOR MANUFACTURING ACTUATOR - A method for manufacturing an actuator includes: creating a semi-cured product in a semi-cure state in such a manner that an element material that is to be a string-shaped actuator element of all actuator that is made of dielectric elastomer and includes the actuator element is formed in a string shape and that the element material is heated to its cure temperature or higher at least one of in and after formation; and creating a fully-cured product with a cure reaction of the semi-cured product completed in such a manner that the semi-cured product is heated while elongated in its axial direction. | 05-21-2009 |
| 20090278278 | METHOD OF PRODUCING POLYOLEFIN RESIN FILM - A method of producing a polyolefin resin film comprising melt-extruding a polyolefin resin from a circular die toward the antigravity direction to form a tubular film and cooling the tubular film while receiving the film toward the antigravity direction, wherein a water-absorbing material containing water and having a width in the gravity direction of 5 mm or more is brought into contact with the peripheral surface of the tubular film to cool the film, at any position distant by 0 to 200 mm toward the gravity direction from the frost line obtained by air cooling. | 11-12-2009 |
| 20100072659 | Methods of Manufacturing Linearly Expandable Ureteral Stents - A method includes forming an elongated member having a tubular shape. The elongated member includes a sidewall that defines a lumen. A spiral-shaped opening is formed in the sidewall such that the elongated member is configured to move between a retracted configuration and an expanded configuration along a longitudinal axis of the lumen. In some embodiments, the method further includes forming a distal retention structure. The distal retention structure can be disposed at a distal end of the elongated member and can define a lumen in fluid communication with the lumen defined by the sidewall of the elongated member. | 03-25-2010 |
| 20100314793 | METHOD FOR MAKING A POLYAMIDE HOLLOW BODY - Method for making a hollow body comprising, as sole layer(s), at least one layer L1 consisting of a polyamide composition comprising an aromatic polyamide and an impact modifier, said method comprising extruding the polyamide composition through a die. | 12-16-2010 |
| 20110049751 | Method Of Fabricating A Low Crystallinity Poly(L-Lactide) Tube - Methods of fabricating a low crystallinity polymer tube for polymers subject to strain-induced crystallization. The low crystallinity tube may be further processed to make an implantable medical device. | 03-03-2011 |
| 20110180954 | Method and Extrusion Line for producing peroxide-cross-linked polyethylene pipes - A method and extrusion line for producing peroxide-cross-linked polyethylene pipes in an extrusion line having an extruder, a cross-linking furnace and a flue. The extruded tube is subjected to a stretching process, and the cross-linking furnace has a first heating section that extends from its inlet to an actuated deflection roller and a second heating section from the deflection roller to its outlet. The stretching process in the first heating section and the stretching process in the second heating section are monitored and regulated in such a manner that the necessary stretching of the pipe takes place primarily in the first heating section, and the stretching of the pipe in the second heating section is subjected to zero adjustment. In this case, the height of the deflection roller(s) of the cross-linking furnace and the angle of the heating sections to the horizontal plane can be height-adjustable. | 07-28-2011 |
| 20110180955 | Medical catheter tubes and process for production thereof - A medical catheter tube containing a tetrafluoroethylene polymer, which has a wall thickness of 0.1 mm or below and exhibits a tensile strength (S1) at 1.0 mm displacement of 5.0 N/mm or above; and a process for the production of medical catheter tubes, characterized by molding a composition both a tetrafluoroethylene polymer and a lubricant having high affinity for the polymer by paste extrusion. The invention provides thin-wall medical catheter tubes excellent in elongation resistance, kink resistance and internal cavity lubricity. | 07-28-2011 |
| 20110248424 | Process For The Manufacture Of Flexible Pipe - A process for the manufacture of flexible pipe from a composition comprising: a polymeric part (a) consisting of a thermoplastic polymer obtained by homopolymerisation or copolymerisation of a monomer of butene-1, or a blend of a thermoplastic polymer obtained by homopolymerisation or copolymerisation of a monomer of butene-1 with one or more compatible thermoplastic polymers, a polydiorganosiloxane (b) having a minimum Williams plasticity of 30 determined by the ASTM 926 test method and an average of at least 2 alkenyl radicals per molecule, an organohydrido silicon compound (c) having an average per molecule of at least 2 silicon atoms bound directly to a hydrogen atom, a hydrosililation catalyst (d) which process comprises (i) the provision of a cured polydiorganosiloxane (B1) obtained by crosslinking of the compounds (b) and (c) in the presence of catalyst (d), (ii) causing the cured polydiorganosiloxane (B1) to be dispersed in the polymeric part (a) thus obtaining a thermoplastic elastomer and (iii) moulding, for example by extrusion, the thermoplastic elastomer into a flexible pipe. The thermoplastic elastomer used and the resulting pipes comply with the requirements of standard KTW-270 (A) in relation to drinking water contamination. | 10-13-2011 |
| 20110285051 | Device And Method For Extruding Plastic Profiles In An Energy Efficient Manner - The invention relates to an extrusion line for producing plastic profiles, preferably plastic tubes, comprising at least one extruder ( | 11-24-2011 |
| 20120007272 | HDPE Resins for Use in Pressure Pipe and Related Applications - The present invention provides bimodal polyethylene resins in which the high molecular weight ethylene copolymer component typically has a relatively narrow molecular weight distribution, with short chain branching content being substantially constant across its molecular weight distribution. The resins of this invention are typically characterized by improved toughness and resistance to slow crack propagation properties making them useful for pressure pipe applications. | 01-12-2012 |
| 20120086146 | Extremely Thin-Walled ePTFE - An extrusion device is described herein, including an inventive die and mandrel that enable the production, using a conventional ram extruder, of strong coherent extremely thin-walled tubes having a wall thickness in the range of about 0.020 mm and about 0.080 mm. | 04-12-2012 |
| 20120091620 | CROSSLINKABLE POLYETHYLENE COMPOSITION - A combination of vinyl trimethoxysilane and vinyl triethoxysilane can be grafted onto polyethylene to produce a polyethylene graft terpolymer that can be crosslinked without a significant reduction in crosslinking rates relative to vinyl triemethoxysilane grafted polyethylene. The combination of vinyl trimethoxysilane and vinyl triethoxysilane apparently act synergistically. While byproduct methanol from crosslinking with trimethoxysilane is very undesirable in some products, byproduct ethanol from crosslinking is less hazardous, especially at ppm levels. | 04-19-2012 |
| 20120091621 | BIMODAL PIPE RESIN AND PRODUCTS MADE THEREFROM - Disclosed is a bimodal Ziegler-Natta catalyzed polyethylene, having a density of from 0.930 glee to 0.960 glee, and a molecular weight distribution of from 10 to 25, wherein an article formed therefrom has a PENT of at least 1500. Also disclosed is a method of preparing a tubular article including obtaining a bimodal polyethylene having a density of from 0.930 glee to 0.960 Wee and a molecular weight distribution of from 10 to 25, and processing the polyethylene under conditions where a specific energy input (SET) is less than 300 kW.h/ton, and wherein the article has a PENT of at least 1500. Further disclosed is a method for controlling the degradation of polyethylene including polymerizing ethylene monomer, recovering polyethylene, extruding the polyethylene, and controlling the degradation of polyethylene by measuring the SEI to the extruder and adjusting throughput and/or gear suction pressure keep SEI less than 300 kW.h/ton, and forming an article. | 04-19-2012 |
| 20130300024 | DIVIDED CONDUIT EXTRUSION DIE AND METHOD WITH JOINING FEATURES - An apparatus and method are provided for making a conduit divided into channels by one or more strip-shaped substrates. The channels may be used for cables, such as fiber optic cables, coaxial cables, electrical cables, electrical wiring, and the like. Each divided conduit provides channels that allow e.g., cables to be pulled through without snagging or excessive heat build-up due to friction. In addition, the divided conduits do not allow contact or alternation losses between adjacent cables in other channels of the conduit. | 11-14-2013 |
| 20140333001 | Thermoplastic Polyurethane With Reduced Tendency To Bloom - The present invention discloses a thermoplastic polyurethane which is comprised of the reaction product of (1) a hydroxyl terminated polyester intermediate, (2) a polyisocyanate, and (3) a glycol chain extender; wherein the hydroxyl terminated polyester intermediate is comprised of repeat units that are derived from 1,3-propylene glycol and a dicarboxylic acid; wherein the hydroxyl terminated polyester intermediate has a number average molecular weight from 500 to 10,000; and wherein the thermoplastic polyurethane includes hard segments that are the reaction product of the polyisocyanate and the glycol chain extender. This thermoplastic polyurethane is unique in that it has a greatly reduced tendency to bloom. This is highly desirable in applications where high clarity is desired because blooming causes articles containing the thermoplastic polyurethane to be hazy or foggy in appearance. Blooming can also reduce the ability of an article made with the thermoplastic polyurethane to be securely bound to another article with an adhesive. | 11-13-2014 |
| 20150061179 | CERAMIC DIE PIN FOR MOLTEN PLASTIC EXTRUSION - Ceramic die pin for molten thermoplastic extrusion, apparatus for molten thermoplastic extrusion including a ceramic die pin, and methods of molten thermoplastic extrusion with a ceramic die pin. The ceramic head member can have a mounting cavity formed therein. The ceramic head member can be made of high purity aluminum oxide, and have an outer surface finish of between about 4 RMS and about 275 RMS. | 03-05-2015 |
| 20160145364 | TWO-STAGE PROCESS FOR PRODUCING POLYPROPYLENE COMPOSITIONS - A process for polymerizing propylene in the presence of a polymerization catalyst by copolymerizing propylene with a comonomer selected from the group of ethylene and C4-C10 alpha-olefins in two polymerization stages. The first polymerization stage is conducted in a loop reactor and the second polymerization stage in a gas phase reactor. The polymer produced in first polymerization stage has a higher melt flow rate and a lower content of comonomer units than the final polymer mixture. The process can be operated with a high throughput and catalyst productivity. | 05-26-2016 |
| 264209200 | Including rotational or translational movement of a material shaping member | 5 |
| 20090091055 | METHOD AND APPARATUS FOR PRODUCING PIPES HAVING A TRANSVERSE PROFILE FROM THERMOPLASTIC MATERIAL - In a method and an apparatus for producing pipes having a transverse profile from thermoplastic material, mold segment halves are used on a molding path and are circulated in pairs. A main conveying device is provided for returning the mold segment halves, the main conveying device being designed like a gantry crane. A conveying bridge encompassing the molding path is provided with two conveying carriages which are displaceable at right angles to a direction of production and in opposite directions relative to each other and to which is in each case attached a downwards facing conveying arm comprising a holding device for in each case one mold segment half. Downstream of the downstream end of the molding path are provided parking positions for additional mold segment halves. Disposed downstream of the molding path is an auxiliary conveying device which is provided for removing the additional mold segment halves from the molding path in order to subsequently return them to the parking positions. | 04-09-2009 |
| 20110198777 | METHOD FOR MANUFACTURING SEAMLESS THIN-WALLED ARTICLES WITH THERMOPLASTIC MATERIALS - A method for manufacturing seamless thin-walled articles with thermoplastic material is disclosed, wherein the seamless thin-walled articles each having single opening are coated onto plural mold surfaces, which move along a track and respectively have a rotation. The method includes a molten and coating step to coat thermoplastic materials in molten state from at least two extruding mechanisms on the surfaces of the molds; a heating and cooling step to heat the thermoplastic materials by passing the molds, which rotate at the same time, through a heating mechanism to form thin-walled articles with even thickness, and then cool the thermoplastic materials; a lip rolling step to roll up the thermoplastic materials at the lower edge of the opening to form a lip; and a mold releasing step to release the thin-walled articles from the molds. | 08-18-2011 |
| 20120217672 | METHOD OF FABRICATING AN IMPLANTABLE MEDICAL DEVICE WITH BIAXIALLY ORIENTED POLYMERS - Methods and systems for manufacturing an implantable medical device, such as a stent, from a tube with desirable mechanical properties, such as improved circumferential strength and rigidity, are described herein. Improved circumferential strength and rigidity may be obtained by inducing molecular orientation in materials for use in manufacturing an implantable medical device. Methods of inducing circumferential molecular orientation by inducing circumferential flow in a molten polymer are disclosed. | 08-30-2012 |
| 20130249139 | METHOD FOR MANUFACTURING TUBULAR BODY - Provided is a tubular body manufacturing method including preparing a resin composition containing a crystalline thermoplastic resin and molding the tubular body, using an extrusion molding machine that includes a cylindrical portion and a transport member which has a shaft member and a protrusion and is divided into a supply portion, a compressing portion and a measuring portion, by melting, kneading and transporting the resin composition through heating of the heat source and rotation of the transport member, and then extruding the molten resin composition, in which, when ΔTm (° C.) is a difference between a crystalline melt finish temperature and a crystalline melt start temperature of the crystalline thermoplastic resin, D (mm) is a diameter of the transport member, and Lc (mm) is a length of the compressing portion of the transport member, a relationship of following Expression (1) is satisfied: | 09-26-2013 |
| 20150360407 | CONTINUOUS EXTRUSION FORMING APPARATUS - An apparatus of the present invention is a continuous extrusion forming apparatus comprising: a screw which carries a forming raw material in the horizontal direction, the screw being built in the screw part; and a mouth piece structure for extrusion forming, which is provided on the downstream side of a screw part, wherein the mouth piece structure has a horizontal channel for extruding the forming raw material flowing in from the screw part in the horizontal direction, an extrusion channel orthogonal to the horizontal channel, and an extrusion port provided at a tip end of the extrusion channel, and wherein a mouth piece structure holder which holds the mouth piece structure is provided with a turning means which freely changes the opening direction of the extrusion port between the horizontal direction and a floor facing direction. | 12-17-2015 |
| 264209300 | Reshaping product (extrudate) subsequent to extrusion | 12 |
| 20080284056 | MULTILAYER EXTRUDED SEAL AND METHOD FOR MANUFACTURING SUCH SEAL - An extruded multilayer seal member having an expanded temperature range and an improved compression set resistance wherein the seal member comprises a first fluoroelastomer as the inner layer of the multilayer seal member and a second elastomer as the outer layer of the multilayer seal member; and a method for manufacturing the multilayer seal member which comprises extruding a multilayer tubular structure, crosslinking the extruded multilayer tubular structure on a mandrel, cutting the multilayer tubular structure to provide a plurality of uniform seal members and recovering the seal members, are described. | 11-20-2008 |
| 20090014906 | Apparatus for fabricating bellows type hose and fabrication method thereof - An apparatus for fabricating a bellows type hose and a fabricating method thereof, which can improve a bellows type hose for use in a vacuum cleaner or the like in quality. The apparatus includes a power generating unit, an outer mold having at least one folds-forming gear disposed to rotate while revolving around a hollow-cylindrical basic material conveyed from an injection molding unit and thus to form folds on the hollow-cylindrical basic material, the at least one folds-forming gear having a waved folds-forming part formed on an outer circumferential surface thereof, and a power transmitting unit to transmit a power of the power generating unit to the at least one folds-forming gear of the outer mold. | 01-15-2009 |
| 20090057945 | Process for manufacturing a plastic hollow body, device and equipment for the implementation thereof - Process for manufacturing a plastic hollow body, the process comprising the following steps:
| 03-05-2009 |
| 20100090366 | Apparatus and Method for Pressing an Outer Wall of Pipe - A method of pressing an outer wall of polymer pipe is provided. The method includes extruding a layer of polymer onto a pipe to form an outer wall of pipe; conveying the pipe including the outer wall of pipe through a pressing apparatus having a pressing element configured to rotate about the pipe; and urging the pressing element against an exterior surface of the outer wall as the pressing element rotates about a pipe conveyed through the pressing apparatus. An apparatus for pressing an outer wall of polymer pipe is also provided. | 04-15-2010 |
| 20110101562 | TUBULAR MEMBER EXTRUSION METHOD AND TUBULAR MEMBER EXTRUSION APPARATUS - According to a fabrication method, an extruded tubular member HA is formed, using an extrusion die | 05-05-2011 |
| 20110233817 | PROCESS FOR MANUFACTURING A PLASTIC HOLLOW BODY, DEVICE AND EQUIPMENT FOR THE IMPLEMENTATION THEREOF - Process for manufacturing a plastic hollow body, the process comprising the following steps:
| 09-29-2011 |
| 20120104648 | APPARATUS AND METHOD FOR PRODUCING AN IRRIGATION PIPE - An apparatus enables forming extruded plastic material into a strip that may be formed into an irrigation pipe. The apparatus includes a pair of juxtaposed rollers which when rotated, the linear velocity of a contact surface of one of the rollers of the pair is different from the linear velocity of a contact surface of the other roller of the pair. Thus, extruded material that passes between the rollers is concurrently stretched and flattened. | 05-03-2012 |
| 20120273994 | FLEXIBLE TUBE DEVICE AND ENDOSCOPE - A method for producing a flexible tube device includes supplying a tubular structure to an extrusion head, extruding a molten rigid resin and a molten non-rigid resin at a constant pressure to the tubular structure through an orifice formed in the extrusion head, controlling a moving speed of the tubular structure when extruding the molten rigid resin such that the moving speed becomes a highest speed VH when the proximal end passes through the orifice, and decreases at a first constant acceleration rate until a first change point, located closer to the proximal end than to the distal end, passes through the orifice to reach a lowest speed VL, controlling the moving speed of the tubular structure when extruding the molten non-rigid resin, and cooling the tubular structure to obtain the flexible tube device. | 11-01-2012 |
| 264209400 | Sizing to desired dimension | 4 |
| 20090008817 | Liquid-supplying member, liquid-ejecting apparatus, attaching method, liquid delivery tube, and liquid delivery tube production method - A connection part is attached to an end of a liquid delivery tube, the connection part being provided with a flow path for changing the flowing direction of a liquid. A method for attaching the connection part to the liquid delivery tube comprises the steps of: preparing a pin having a leading end portion of substantially the same section as that of the flow path of the liquid delivery tube and an arcuate portion which curves in an arc from the leading end portion so as to have a substantially constant section; inserting the leading end portion of the pin into the flow path from at least one end of the liquid delivery tube; placing dies so as to enclose at least one end of the liquid delivery tube; forming the connection part by outsert molding from resin which fills the dies in which the liquid delivery tube and the pin are placed; and extracting the pin from the liquid delivery tube in a direction along the arcuate shape of the pin after removal of the dies from the liquid delivery tube and the connection part. | 01-08-2009 |
| 20100237533 | Process for Producing Oriented Plastic Tube - A start-up sequence for a continuous process for producing oriented plastic tube is disclosed. A variable diameter extruder ( | 09-23-2010 |
| 20150048542 | DEVICE AND PROCESS FOR CALIBRATING TUBULAR EXTRUDATES - The present invention relates to a calibration device for use in a process of making a tubular article comprising a housing and a calibration sleeve providing a vertical pass-way for an extruded tubular extrudate, the housing comprising a bore, an upper opening with an upper seal and a lower opening with a lower seal; a vacuum channel connecting the bore to a vacuum source; a liquid channel for receiving a flow of liquid and connecting to a reservoir on top of the housing; and an adjustment device for controlling the liquid level in the reservoir; and the calibration sleeve comprising a body with multiple apertures and an inlet flange; the calibration sleeve removably positioned in the bore and contacting the housing via the upper and lower seals. This calibration device enables making a tubular article in a very flexible way, specifically on small scale in the laboratory; and can be operated in free or contact calibration mode, both with either dry or wet operation. | 02-19-2015 |
| 264209500 | Stretching extruded material | 1 |
| 20090026653 | SUPPORT ARRANGEMENT FOR AN EXTRUSION TOOL AND EXTRUSION TOOL FOR MOULDING AN OBJECT - The invention describes a support arrangement for retaining several calibration dies ( | 01-29-2009 |
| 264209600 | Curing or polymerizing operation during extrusion (e.g., cross-linking, vulcanizing, etc.) | 3 |
| 20110049752 | Process for Producing Crosslinked Fluororubber - [Problem] To provide a method for producing a polyol-crosslinking, crosslinked fluororubber product which exhibits low tack properties and significantly increased rubber hardness. | 03-03-2011 |
| 20130277882 | INORGANIC HOLLOW YARNS AND METHOD OF MANUFACTURING THE SAME - Disclosed herein is a method of manufacturing inorganic hollow yarns, such as cermets, oxide-non oxide composites, poorly sinterable non-oxides, and the like, at low costs. The method includes preparing a composition comprising a self-propagating high temperature reactant, a polymer and a dispersant, wet-spinning the composition through a spinneret to form wet-spun yarns, washing and drying the wet-spun yarns to form polymer-self propagating high temperature reactant hollow yarns, and heat-treating the polymer-self propagating high temperature reactant hollow yarns to remove a polymeric component from the polymer-self propagating high temperature reactant hollow yarns while inducing self-propagating high temperature reaction of the self-propagating high temperature reactant to form inorganic hollow yarns. The composition comprises 45˜60 wt % of the self-propagating high temperature reactant, 6˜17 wt % of the polymer, 0.1˜4 wt % of the dispersant, and the balance of an organic solvent. | 10-24-2013 |
| 20180022006 | HEAD AND SYSTEM FOR CONTINUOUSLY MANUFACTURING COMPOSITE HOLLOW STRUCTURE | 01-25-2018 |
| 264209800 | Providing special flow channel feature (e.g., varying dimension of flow channel or varying direction of flow of material in the extruder, etc.) | 9 |
| 20080203607 | Pipe Extrusion Die Flow Path Apparatus and Method - A method and apparatus is provided for distributing material through a multilayer pipe extrusion die. A first flow passageway, having a first cross-sectional area and extending along a first flow direction, may be connected to a second flow passageway, having a second cross-sectional area substantially the same as the first cross-sectional area of the first flow passageway, to provide a second flow direction different from the first flow direction of the first flow passageway. A conical passageway may extend from the second passageway toward a dispensing outlet. Material may be distributed from the first flow passageway into the second flow passageway. The method and apparatus may generally maintain the same flow properties of the material at a point before and after the connection of the first flow passageway and the second flow passageway. The flow properties of the material may be altered proximate to the outlet. | 08-28-2008 |
| 20080203608 | Defined Ratio Dual-Wall Pipe Die - A pipe extrusion die may be provided having an inner flow passageway having a first cross-sectional area, and an outer flow passageway having a second cross-sectional area, both being in communication with an inlet flow passageway. A ratio adjusting tube may be movably disposed in blocking engagement between the inlet flow passageway and the inner flow passageway. The ratio adjusting tube and the outer flow passageway both may be substantially concentric with the inner flow passageway. Material may be distributed from the inlet flow passageway to the inner and outer flow passageways. The method and apparatus may allow for the manual and automatic control of the proportion of material distributed between the inner and outer flow passageways by adjusting the position of the ratio adjusting tube in relation to a passageway between the inlet flow passageway and the inner flow passageway, based on various operating parameters. | 08-28-2008 |
| 20090065971 | Manufacturing of Shaped Coolant Hoses - The present invention relates to a process for manufacturing a shaped article such as tubes, and hoses comprising processing a fiber-reinforced thermoplastic polymer in an extruder apparatus. | 03-12-2009 |
| 20090160083 | SWEPT LEG SPIDER FOR AN EXTRUSION APPARATUS - A spider for an extrusion apparatus located upstream from a die, through which a profile is extruded. The spider can have an outer housing with a central flow passage therethrough. An inner hub can be positioned within the central passage for supporting an inner portion of the die. At least one spider leg can be secured to the outer housing and the inner hub, and support the inner hub within the central passage. The at least one spider leg can recess radially rearwardly outwardly in the downstream direction such that molten polymer flowing through the central passage flows around the at least one spider leg, separating and rejoining together earlier in inner radial regions close to the inner hub than in outer radial regions close to the outer housing for reducing spider lines on inside surfaces of extruded profiles. | 06-25-2009 |
| 20090321983 | Extrusion Molding Die and Extrusion Molding Method for Molding a Medical Treatment Tube - An extrusion molding die, for extruding a medical treatment tube, in which is formed a flow path, and the like, between dividing wall portions, is structured from an outer shape molding die, wherein indented portions are formed, and a pin that is provided with a land portion. Additionally, a space that is formed between the outer shape molding die and the pin is structured from a rear portion side molding space portion, which forms the molding material into a cylinder that is pointed at the tip, and a tip side molding space portion, provided with a cross-sectional shape capable of forming the medical treatment tube. In addition, in the cross-sectional shape of the tip side molding space portion, the cross-sectional shape at the tip portion is the same as the cross-sectional shape of the medical treatment tube, and the cross-sectional shape of the rear side portion is shaped as the portion that shapes the flow path in the land portion, with the portions that shape the flow paths removed. | 12-31-2009 |
| 20120119409 | Swept Leg Spider For An Extrusion Apparatus - A spider for an extrusion apparatus located upstream from a die, through which a profile is extruded. The spider can have an outer housing with a central flow passage therethrough. An inner hub can be positioned within the central passage for supporting an inner portion of the die. At least one spider leg can be secured to the outer housing and the inner hub, and support the inner hub within the central passage. The at least one spider leg can recess radially rearwardly outwardly in the downstream direction such that molten polymer flowing through the central passage flows around the at least one spider leg, separating and rejoining together earlier in inner radial regions close to the inner hub than in outer radial regions close to the outer housing for reducing spider lines on inside surfaces of extruded profiles. | 05-17-2012 |
| 20120200001 | DEVICE AND METHOD FOR PRODUCING FILM TUBING - The invention describes a device ( | 08-09-2012 |
| 20140183781 | DIE FOR EXTRUDING A PIPE AND METHOD THEROF - A die for extruding a pipe includes a die head having an inlet for receiving and a bore for mixing an extrudate, a punch placed axially inside the die head, and a die cavity mounted at an outlet thereof. An outer surface of the die cavity includes flat surfaces at points of contact of a first adjustment structure which includes a plurality of flat end bolts perpendicular to each other positioned around the die cavity for adjusting position of the die cavity. The die further includes an extended orifice shaped as a thin walled tube formed around the orifice, and a second adjustment structure located at a tip of the orifice to distort the orifice for maintaining uniform flow of extrudate, and a plurality of segments are located around the orifice to uniformly distribute the load of the second adjustment structure on to the outer circumference of the orifice. | 07-03-2014 |
| 20160101554 | METHOD FOR FORMING LONG HOLLOW ARTICLES AND DEVICE FOR IMPLEMENTING SAME (VARIANTS) - A device for forming long hollow articles includes an extruder and a forming attachment consisting of a die, a mandrel and an assembly for securing the mandrel inside the die. The working surfaces of the forming attachment are provided with one or more rows of profiled deformation elements disposed with an equal circumferential pitch on the working surfaces of the die and/or the mandrel. A blank of a plasticized material is forced through the mandrel securing assembly into an annular axisymmetric deformation region formed by the working surfaces of the mandrel and the die. In the region, the material undergoes additional drawing and deformation treatment prior to sizing. The design features of the device make it possible to realize cyclic drawing and compressive strains in an axial direction and in surfaces enveloping the working surfaces of the die and the mandrel across the entire length of the annular region, and cyclic compressive strains in a radial direction, as well as cyclic oppositely signed shear and flexural strains, resulting in uniform, intensive deformation treatment of the entire volume of material prior to the sizing of the blank. | 04-14-2016 |
