Including Heating Of Previously Formed Parison To Blow Molding Temperature Patents (Class 264/535)
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Patent number: 7829008Abstract: Disclosed is a method for fabricating a stent, the method comprising: positioning a polymeric tube inside a mold, wherein a high thermally conductive element covers at least a portion of the outer surface of the mold, the high thermally conductive element having a thermal conductivity that is greater than that of the mold; heating at least a portion of the mold; radially expanding the tube against the mold; and fabricating a stent from the radially expanded tube.Type: GrantFiled: May 30, 2007Date of Patent: November 9, 2010Assignee: Abbott Cardiovascular Systems Inc.Inventors: Vincent J. Gueriguian, David C. Gale, Bin Huang
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Publication number: 20100256742Abstract: A polymeric stent has an inner surface with an inner diameter that tapers continuously in size. A method for manufacturing a stent includes blow molding a polymeric tube within a mold having a tapered, cylindrical cavity such that the polymeric tube attains a corresponding tapered shape. The tapered tube is used as a substrate from which a laser cuts interconnecting stent struts.Type: ApplicationFiled: June 15, 2010Publication date: October 7, 2010Inventors: Klaus Kleine, David C. Gale
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Publication number: 20100256248Abstract: According to the present invention there are provided improved rubber modified monovinylidene aromatic polymers having the specified relatively high molecular weight and the necessary rubber levels and particles. These improved resins are specially adapted and suited for use in stretch blow molding processes. They provide improved combinations of container neck strength and toughness, wall strength and stiffness and packaging efficiency. The present invention provides the makers of stretch blow molded containers with options for improved packaging cost and efficiency.Type: ApplicationFiled: October 23, 2008Publication date: October 7, 2010Inventors: Rodolfo Salmang, Enrique Torres, Julien Damen, Amaia Montoya-Goni
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Patent number: 7790255Abstract: A container comprises a micro cellular foamed polymer, and a non-reactive gas contained within the micro cellular foam cells, wherein the container has a silvery appearance. The process for making the container comprises injection molding a polymer preform having a non-reactive gas entrapped within the walls thereof, cooling the preform to a temperature below the polymer softening temperature, reheating the preform to a temperature above the polymer softening temperature, and blow molding the preform, to prepare a container comprising a micro cellular foamed polymer having a non-reactive gas contained within the micro cellular foam cells.Type: GrantFiled: March 20, 2006Date of Patent: September 7, 2010Assignee: Plastic Technologies, Inc.Inventors: Frank E. Semersky, William D. Voyles, Eugene M. Sadzewicz
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Patent number: 7740791Abstract: The invention provides a method of manufacturing a stent, the method comprising: disposing a polymeric tube into a cylindrical mold, the cylindrical mold having a variable diameter along a portion of the inside surface of the mold; radially expanding the tube by blowing a gas or liquid into the cylindrical mold, the outside surface of the tube conforming to the variable diameter portion of the outside surface of the mold, causing the radially expanded tube to have a variable diameter along the conformed length of the tube; and fabricating a stent from the expanded tube.Type: GrantFiled: June 30, 2006Date of Patent: June 22, 2010Assignee: Advanced Cardiovascular Systems, Inc.Inventors: Klaus Kleine, David C. Gale
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Publication number: 20100133295Abstract: Material dispensing systems and methods for make such systems are described. The material dispensing systems employ a collapsible container that is at least partially surrounded by an elastically deformable band. The band stretches as the container is filled with a flowable composition, thereby creating potential energy which can then be used to dispense the composition in lieu of a propellant and/or pressurized container.Type: ApplicationFiled: October 23, 2009Publication date: June 3, 2010Inventors: John Geoffrey Chan, Lawrence Edward O'Brien
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Patent number: 7727454Abstract: The invention proposes a device (10) for transferring items (3) from an items (3) loading station (13) to an items (3) unloading station (14), which comprises: a group (18) of modules (19a-d) mounted such that they can move in a longitudinally direction, able to adopt a contracted configuration in which the modules (19a-d) are separated by a first spacing (pl), and a deployed configuration in which the modules (19a-d) are separated by a second spacing (F), means (34) of linking one module (19a) to another (19b), comprising a lever (38) mounted such that it is articulated on a first module (19b) and connected to a second module (19a), this lever (3) furthermore cooperating with a groove (46) having an intermediate section (46c) forming an angle with the direction of movement of the group (18) of modules (19a-d), and means (35, 36) of controlling the movement of the group (18). Application to the transfer of blanks from a heating station to a station for molding receptacles from blanks.Type: GrantFiled: June 15, 2007Date of Patent: June 1, 2010Assignee: Sidel ParticipationsInventors: Philippe Freire-Diaz, Sylvain Auvray
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Patent number: 7713464Abstract: The invention provides a multilayer container that comprises a polyglycolic acid layer and a thermoplastic polyester resin layer and is much improved in terms of gas barrier properties, heat resistance, moldability, transparency and durability, and its production process. Polyglycolic acid is used as a gas barrier resin. At the body and bottom, the thermoplastic polyester resin forms an inner and an outer layer, and an intermediate layer comprising at least one polyglycolic acid layer is embedded in the thermoplastic polyester resin layer. The opening end of the container is formed of a thermoplastic polyester resin layer alone, and the body is biaxially oriented. The multilayer container has heat resistance enough to stand up to hot-filling at 93° C. for 20 seconds.Type: GrantFiled: November 1, 2002Date of Patent: May 11, 2010Assignee: Kureha CorporationInventors: Junji Nakajima, Takafumi Kato, Yoshihiro Matsukura
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Publication number: 20100109207Abstract: The invention relates to a blowing or stretch-blowing device (1) for making vessels from thermoplastic blanks with a collar, that comprises a blowing nozzle (3) mobile between an upper position and a lower position for blowing a pressurised fluid into a blank having a body provided in the moulding cavity of a mould and having a collar protruding outside the mould, the device includes a clamping means (4) provided above the mould and capable of holding a blank by the collar thereof, a holding means (20, 21) for the clamping means for moving the same between two raised or lowered positions, wherein at least one branch (7, 8) of the clamping means being transversally mobile; mechanical coupling means (5) provided between the clamping means and the blowing nozzle and capable of synchronising the movements of the clamping means with the movement of the blowing nozzle.Type: ApplicationFiled: April 2, 2008Publication date: May 6, 2010Applicant: Sidel ParticipationsInventors: Nicolas Rousseau, Laurent Danel
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Publication number: 20100090376Abstract: The method and device are for blow-moulding containers. A blank is moulded in a blowing mould by means of a blowing pressure after a thermal treatment. The blanks are positioned along a part of the transport path thereof by means of a support element (42) held by a rotating transfer wheel (41). The support element is movably mounted relative to the transfer wheel. The support element is positioned by means of a cam controller (50). The cam controller comprises a positionable cam segment (56) which preselectably places the support element in a working or a resting position. In the working position the support elements are brought into a transfer region and in the resting position are held away from said transfer region.Type: ApplicationFiled: February 7, 2008Publication date: April 15, 2010Inventors: Michael Litzenberg, Michael Linke, Rolf Baumgarte, Frank Lewin
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Publication number: 20100065989Abstract: A method of manufacturing a resorbable balloon designed to contain bone cement for vertebroplasty or kyphoplasty applications is described. The resorbable balloon can be inserted into a vertebral body following vertebral cavitation and filled with bone cement. The balloon remains in place in the vertebral body and resorbs over time. Methods and apparatus are also described for delivering therapeutic agents using collapsible, resorbable balloons. The balloons may be nested and filled with various therapeutic agents that are released over time at rates dependent upon structures and degradation rates of the balloons. Furthermore, the function of the hollow devices can encompass both encapsulation and therapeutic substance delivery roles simultaneously.Type: ApplicationFiled: November 23, 2009Publication date: March 18, 2010Inventors: SUSAN LYNN RILEY, ALEXANDER R. VACCARO, JOSEPH TAI
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Patent number: 7674424Abstract: The method and the device serve for the blow moulding of containers (2). Preforms (1) of a thermoplastic material are heated in the region of a heating path (24) and then transferred to a blowing device (25). The blowing device (25) is provided with at least one blowing station (3) for moulding the preforms (1) into the containers. The preforms (1) are retained along at least a section of the transport path thereof by a support element (46) which is at least partly loosely introduced into a mouth section (21) of the preform (1) and tightened in the mouth section (21) after the introduction thereof.Type: GrantFiled: December 23, 2005Date of Patent: March 9, 2010Assignee: KHS Corpoplast GmbH & Co. KGInventors: Rolf Baumgarte, Michael Litzenberg, Michael Linke
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Patent number: 7666342Abstract: A blow molding apparatus for expanding a polymer tube and a method for fabricating a stent using the apparatus is disclosed. The polymer tube is disposed within a tubular mold, over which a heated ring is made of a material having thermal conductivity greater than the tubular mold is translated. The ring is heated with heated fluid streams applied directly onto an outer surface of the ring, or heated fluid circulated within the ring, or an electrically resistive coil within the ring, or combinations thereof. The heated ring uniformly heats a circumference of the tubular mold that, in turn, uniformly heats a circumferential band of the polymer tube. The heated polymer tube is progressively expanded radially and axially while the ring is translated longitudinally over the polymer tube. The expanded polymer tube can be heat set and cooled prior to removal from the tubular mold.Type: GrantFiled: June 29, 2007Date of Patent: February 23, 2010Assignee: Abbott Cardiovascular Systems Inc.Inventors: Timothy A. Limon, Daniel A. Castro, David C. Gale
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Patent number: 7649158Abstract: The invention relates to a furnace (10) for heating preforms (20), of the type that comprises a preform-heating tunnel (12). According to the invention, the tunnel consists of a heating module (18) comprising vertical walls (14, 16) between which the preforms (20) travel. Moreover, at least one wall (16) of the module (18) is provided with at least one heating means (32) which is mounted to supports (34) such that it can move transversely and means (40) for adjusting the transverse position of the heating means (32) comprising at least one member (42) for controlling the movement of the heating means (32) between at least two indexed positions. The invention is characterized in that the control member (42) comprises an indexing boss (54) which can deform elastically such as to fit inside the complementary indexing notches (56, 58) on the corresponding support (34) at proximal and distal positions respectively.Type: GrantFiled: July 1, 2005Date of Patent: January 19, 2010Assignee: Sidel ParticipationsInventor: Christophe Doudement
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Patent number: 7641844Abstract: A method of making a fiber-reinforced medical balloon is described herein. The method entails pressurizing a portion of a balloon, and ejecting a fiber precursor fluid from at least one nozzle adjacent to the portion. One or more fibers are formed from the fiber precursor fluid and deposited on an exterior surface of the portion. Preferably, the fibers are polymer nanofibers, and the method is carried out using an electrospinning process.Type: GrantFiled: December 10, 2007Date of Patent: January 5, 2010Assignee: Cook IncorporatedInventor: Jeffry S. Melsheimer
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Publication number: 20090243161Abstract: A blow moulding machine for blow moulding a container having an integrally formed handle; said container blow moulded from a previously injection moulded preform; said preform comprising a body portion and said integrally formed handle; said machine including a preform loading station at which said preform is oriented by a preform orienting apparatus.Type: ApplicationFiled: March 9, 2007Publication date: October 1, 2009Inventor: Glenn Robert Beale
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Patent number: 7563403Abstract: A method of reheat blow molding a container includes the step of positioning a preform in a blow mold cavity with at least one of the walls having an opening with an anvil received therein for movement between a first position outside the cavity and a second position at least partially within the cavity. Further, expanding the preform within the cavity while moving the anvil from its first position to its second position so that the expanding preform forms a pocket for receiving a handle therein.Type: GrantFiled: July 2, 2004Date of Patent: July 21, 2009Assignee: Graham Packaging PET Technologies, Inc.Inventor: Thomas E. Nahill
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Patent number: 7553441Abstract: A container made by reheat stretch blow molding process comprises a poly(ethylene terephthalate) copolymer including levels of diethylene glycol lower than that generated as a byproduct in conventional resin manufacturing process and minor amounts of naphthalenedicarboxylic acid resulting in containers which exhibit enhanced mechanical properties. Methods for making the contains and hot filling the containers are also disclosed.Type: GrantFiled: October 1, 2004Date of Patent: June 30, 2009Assignee: The Coca-Cola CompanyInventor: Yu Shi
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Publication number: 20090159482Abstract: A dosing bottle is made by injection molding a synthetic resin preform with a threaded neck finish portion and a body portion. The neck finish has an internal collar adjacent said lower end thereof. The preform is removed from the injection mold and inserted into the mold of a blow molding machine. The mold has a cavity with a body portion conforming to the desired configuration and dimensions for the body of the bottle and a neck portion closely conforming to the configuration and dimensioning of the neck portion closely conforming to the configuration and dimensioning of the neck portion of the preform. The preform is heated and inserted into the blow mold cavity with the neck finish portion of the preform being sealed from the body portion of the cavity. Air is introduced into the body portion of the preform to blow the body portion of the preform into conformity with the body cavity while precluding any distortion of the collar and of the neck finish.Type: ApplicationFiled: December 21, 2007Publication date: June 25, 2009Inventors: Steven F. Begley, Todd R. Johnson, William J. Peek, Randal D. Porter
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Publication number: 20090146345Abstract: Preforms for use in injection stretch blow molding processes and such processes are described herein. The preforms generally include a neck having an internal neck diameter and an external neck diameter and a body having an internal body diameter and an external body diameter, the internal body diameter and the external body diameter forming a sidewall, wherein the internal body diameter is at least 80% of the internal neck diameter. The preforms further include an end-cap positioned on the body at a transition point and having an end-cap depth and a transition point radius, wherein the end-cap depth is greater than the transition point radius.Type: ApplicationFiled: December 5, 2007Publication date: June 11, 2009Applicant: Fina Technology, Inc.Inventors: Luyi Sun, Dang Le, David Smith
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Patent number: 7531125Abstract: A method of making a wide mouth, blow molded PET plastic container having an externally threaded neck, the diameter and wall thickness of the neck and threads have a critical relationship to the diameter and wall thickness of the preform used to blow the intermediate article of which the container is a part. A PET plastic container having a threaded neck with a wall thickness of within the range of 0.032 to 0.038 inches.Type: GrantFiled: August 25, 2003Date of Patent: May 12, 2009Assignee: RING Container TechnologiesInventors: Douglas M. Dygert, David A. Brunson
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Publication number: 20090108505Abstract: The invention relates to an apparatus and method for producing containers. The apparatus comprises at least one heating unit which heats preforms; at least one blow moulding unit which expands heated preforms to form containers; at least one sensor device which outputs at least one measured parameter representative of a physical state of the preforms or containers; wherein at least two control parameters of the heating unit or of the blow moulding unit can be varied; and an adjusting unit which is configured in such a way that it adjusts the control parameters as a function of the measured parameter. According to the invention, the adjusting unit comprises an associating device which associates control parameters with predefined measured parameters in a manner that is freely predefinable.Type: ApplicationFiled: October 22, 2008Publication date: April 30, 2009Applicant: KRONES AGInventor: Andreas Steiner
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Patent number: 7510751Abstract: Bottles, containers and other articles are formed from polypropylene compositions that include a reheating agent, such as antimony, carbon black, graphite, titanium, copper, manganese, iron, tungsten, graphite, infra-red absorbing dyes or other infra-red absorbing material. The reheating time for the polypropylene composition is shortened for injection stretch blow molding or thermoforming, and the polypropylene granule composition with reheating agent has an L* value of at least 80% of the L* value for a polypropylene granule control without added reheating agents as measured by the Gardner color test. The reheating agent may be incorporated into the polypropylene composition by in situ chemical reduction of a metal compound, such as antimony triglycolate, with a reducing agent, such as hypophosphorous acid. In addition, the polypropylene composition with reheating agent may be derived from a polypropylene masterbatch with high concentrations of reheating agent.Type: GrantFiled: October 24, 2007Date of Patent: March 31, 2009Assignee: INVISTA North America S.ar.l.Inventors: Michael Anthony Neal, David A. Harrison, Stephen Derek Jenkins, J. Paul Davis
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Patent number: 7491358Abstract: A method and device serve the tempering preforms of a thermoplastic material. The preforms are modeled subsequent to tempering into a container inside a blow-molding mold by the action of a medium under pressure. During tempering, the preforms are heated by being acted upon by a heat radiation as well as cooled by being blown upon with cooling air, at least in the surface region. For compensation of a change in the surface temperature of the preforms due to operating ambient parameters, a change in the intensity in the subjecting of the preforms to cooling air is conducted. This takes place such that with simultaneous heating and cooling a basically constant surface temperature of the preform is attained. In addition, the intensity of heat radiation can be regulated for adaptation to at least one operating parameter.Type: GrantFiled: March 12, 2002Date of Patent: February 17, 2009Assignee: SIG Corpoplast GmbH & Co. KG.Inventors: Matthias Gernhuber, Dirk Reimer, Klaus Vogel
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Publication number: 20090039567Abstract: The invention relates to a method and a device for blow-moulding containers from preforms which are previously heated in the region of a heating section and consist of a thermoplastic material. The preforms are transferred to a blowing device following the heating thereof, in which they are shaped to form containers by the application of a blowing pressure inside blow moulds. Said blow moulds respectively consist of at least two blow mould segments. The preforms are transported together with the blow moulds at least along part of a peripheral path of a rotating blow wheel. A separating plane of the blow mould segments is positioned at least in an opened state of the blow station in a rotational direction of the blow wheel, facing forwards, with an angle of inclination in relation to the radial direction of the blow wheel. The blow station is positioned at least in two parts during a transfer process.Type: ApplicationFiled: July 17, 2006Publication date: February 12, 2009Inventors: Michael Linke, Michael Litzenberg, Rolf Baumgarte, Frank Lewin, Julian Choinski
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Patent number: 7479003Abstract: A method and a device for producing a film made of a thermoplastic material, wherein a plastic melt is blown up into a film bubble and is shaped into a desired film by a calibrating arrangement, and a downstream arranged flattening device. For providing as contactless as possible a guidance, calibration and flattening, film guidance elements are used with a laminar uniform air cushion between the film guidance element and the surface of the film bubble, without contact between the surface of the film bubble and the film guidance element.Type: GrantFiled: June 16, 2004Date of Patent: January 20, 2009Assignee: Reifenhauser GmbH & Co. MaschinenfabrikInventors: Eike Wedell, Helmut Meyer
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Publication number: 20080296811Abstract: According to a method for producing a duct, a cylindrical preform, which opens at its both end portions in a longitudinal direction and has a central part, is formed. The central part is narrowed with respect to the both end portions. The central part has a smaller cross-sectional area than that of the both end portion. The preform is formed from a thermoplastic material, which increases in strength when stretched. Next, the preform is heated. Then, stretch blow molding is performed on the preform by stretching the preform in axial and radial directions thereof, such that the cross-sectional area of the central part becomes generally the same as that of the both end portion, or equal to or larger than that of the both end portion. The central part is narrowed to such an extent that it retains predetermined strength after performing the molding on the preform.Type: ApplicationFiled: May 30, 2008Publication date: December 4, 2008Applicant: DENSO CORPORATIONInventors: Seiji Tachibana, Toshiaki Nakayama, Yoshitaka Nishio, Naohito Seko
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Publication number: 20080258356Abstract: The present invention relates to an integrally blow-moulded bag-in-container and preform for blow-moulding the bag-in-container. An inner layer and an outer layer are used, wherein the preform forms a two-layer container upon blow-moulding, and wherein the obtained inner layer of said container releases from the thus obtained outer layer upon introduction of a gas at a point of interface between the two layers. At least one of the inner and outer layers includes at least one additive allowing both inner and outer layers to reach their respective blow-moulding temperatures substantially simultaneously.Type: ApplicationFiled: April 19, 2007Publication date: October 23, 2008Applicant: INBEV S.A.Inventors: Sarah Van Hove, Daniel Peirsman, Rudi Verpoorten
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Publication number: 20080166445Abstract: The method and the device serve for the blow moulding of containers (2). Preforms (1) of a thermoplastic material are heated in the region of a heating path (24) and then transferred to a blowing device (25). The blowing device (25) is provided with at least one blowing station (3) for moulding the preforms (1) into the containers. The preforms (1) are retained along at least a section of the transport path thereof by a support element (46) which is at least partly loosely introduced into a mouth section (21) of the preform (1) and tightened in the mouth section (21) after the introduction thereof.Type: ApplicationFiled: December 23, 2005Publication date: July 10, 2008Inventors: Rolf Baumgarte, Michael Litzenberg, Michael Linke
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Publication number: 20080154352Abstract: A method of manufacturing a stent balloon assembly includes molding a thin section in a frusto-conical portion of a balloon, and placing a stent over a stent engaging portion of the balloon when the balloon is in an unexpanded configuration. The stent engaging portion extends from the frusto-conical portion. The method also includes heating the balloon to a temperature above the glass transition temperature of the balloon, and pressurizing the balloon while the temperature is above the glass transition temperature to create a pillow from the thin section of the frusto-conical portion. The pillow protrudes outwardly relative to the stent to prevent the stent from moving in an axial position relative to the balloon.Type: ApplicationFiled: December 21, 2006Publication date: June 26, 2008Applicant: Medtronic Vascular, Inc.Inventor: Justin Goshgarian
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Publication number: 20080116620Abstract: A molding apparatus and method for creating a molded object that incorporate a mold with a mold cavity, a mold core disposed within the mold cavity, and a reciprocating sleeve insertable between the mold core and the mold cavity. The apparatus and method include injecting molten plastic between the core and the sleeve forming a preform object, then retracting the sleeve and expanding the preform object by blow molding, using pressurized fluid provided through jets in the mold core, until the object expands to fill the mold cavity. The apparatus and method further include thermal conditioning of the sleeve when it is retracted to create a temperature profile in the sleeve that is then applied to the preform object, thereby providing finer control of the temperature profile of the preform object before the final blow molding step.Type: ApplicationFiled: November 21, 2006Publication date: May 22, 2008Inventor: John Thomas
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Patent number: 7342059Abstract: Blends of polycarbonate and copolyester that are capable of being extrusion blow-molded are described. The blends preferably comprise (I) about 1 to 99% by weight of a linear or branched polycarbonate and (II) about 1 to 99% by weight of a mixture of (i) about 40 to 100% by weight of a first copolyester and (ii) about 0 to 60% by weight of a second copolyester. The first copolyester preferably comprises (A) diacid residues comprising terephthalic acid residues, (B) diol residues comprising about 45 to 75 mole percent of 1,4-cyclohexanedimethanol (CHDM) residues and about 25 to 55 mole percent of ethylene glycol residues, and (C) about 0.05 to 1.0 mole percent of the residue of a trifunctional monomer. The optional second copolyester preferably comprises (A) diacid residues comprising terephthalic acid residues and (B) diol residues comprising about 52 to 90 mole percent of CHDM residues and about 10 to 48 mole percent of ethylene glycol residues.Type: GrantFiled: December 16, 2003Date of Patent: March 11, 2008Assignee: Eastman Chemical CompanyInventors: Thomas Joseph Pecorini, Harold Eugene Dobbs, Spencer Allen Gilliam, Wesley Raymond Hale
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Patent number: 7316798Abstract: The double blow molding process comprises a primary blow molding step of biaxially drawing and blow molding the preform into a primary intermediate product, a step of heating the primary intermediate product to shrink-mold it into the secondary intermediate product, and a secondary blow molding step of molding the secondary intermediate product into a bottle. This double blow molding process is characterized in that, just before the secondary blow molding step, the secondary intermediate product on standby is maintained at a temperature at least 40° C. or 50° C. higher than the mold temperature used in said secondary blow molding step. From such a temperature, it is possible to determine the double blow molding conditions, which can correspond to the levels of heat resistance required for the bottles, and to provide, with high productivity, the bottles having necessary levels of heat resistance.Type: GrantFiled: January 22, 2003Date of Patent: January 8, 2008Assignee: Yoshino Kogyosho Co., Ltd.Inventors: Daisuke Uesugi, Masao Hattori
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Patent number: 7306760Abstract: A method for producing bottle-type containers made of a synthetic resin, e.g., polyethylene-terephthalate resin, includes a heat treatment step for heating and crystallizing a neck portion of a perform corresponding to a neck portion of a container. In a first stage of the heat treatment step, the neck portion of the perform is temporarily heated to a temperature below a melting point of the synthetic resin, e.g., approximately 200° C. to 230° C. in the case of polyethylene terephthalate resin. In a subsequent second stage, the neck portion is maintained at a temperature within a range in which crystallization of the synthetic resin is promoted, e.g. approximately 170° C. to 195° C. in the case of polyethylene terephthalate resin.Type: GrantFiled: June 27, 2002Date of Patent: December 11, 2007Assignee: Yoshino Kogyosho Co., Ltd.Inventors: Koji Yamanaka, Yoshihiro Iimura, Daisuke Uesugi
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Patent number: 7303795Abstract: Bottles, containers and other articles are formed from polypropylene compositions that include a reheating agent, such as antimony, carbon black, graphite, titanium, copper, manganese, iron, tungsten, graphite, infra-red absorbing dyes or other infra-red absorbing material. The reheating time for the polypropylene composition is shortened for injection stretch blow molding or thermoforming, and the polypropylene granule composition with reheating agent has an L* value of at least 80% of the L* value for a polypropylene granule control without added reheating agents as measured by the Gardner color test. The reheating agent may be incorporated into the polypropylene composition by in situ chemical reduction of a metal compound, such as antimony triglycolate, with a reducing agent, such as hypophosphorous acid. In addition, the polypropylene composition with reheating agent may be derived from a polypropylene masterbatch with high concentrations of reheating agent.Type: GrantFiled: March 13, 2003Date of Patent: December 4, 2007Assignee: INVISTA North America S.a. r.l.Inventors: Michael Anthony Neal, David Anthony Harrison, Stephen Derek Jenkins, John Paul Davis
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Patent number: 7291811Abstract: An oven for heating moving thermoplastic blanks (preforms, intermediate containers), which includes conveying devices for supporting and moving the blanks sequentially while rotating each of them about its own axis. A heating device is arranged laterally to the conveying device for heating the moving blank bodies, and the conveying device includes at least two parallel conveying branches, proximate each other and having opposite conveying directions, the two branches being traveled along one after the other by the blanks. The heating device is arranged between the two conveying branches so as to heat simultaneously on both sides of the blanks moving in opposite directions respectively on the two branches.Type: GrantFiled: December 10, 2003Date of Patent: November 6, 2007Assignee: SidelInventors: Alain Evrard, Frédéric Lecomte, Nasser Takhedmit
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Patent number: 7220378Abstract: A stretch blow molding system that condition preforms such that the temperature distribution within the cross-section of each preform is optimized prior to blow molding operations is provided. The system has a temperature measurement and control system capable of directly monitoring both the outside as well as inside surface temperature of preforms at different stages of transport throughout the thermal conditioning section of the system.Type: GrantFiled: January 7, 2004Date of Patent: May 22, 2007Assignee: Pressco Technology Inc.Inventors: Don W. Cochran, Steven D. Cech
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Patent number: 7157040Abstract: A multiple cavity bottle is manufactured by injection molding a preform having a helical septum and blow molding the preform to create a bottle having a helical septum separating the bottle into two cavities. The helical septum is molded with a twist sufficient to accommodate a contact point size for stretch rods used in blow molding. Blow molding is then accomplished by inserting at least two stretch rods from the top end of the preform to the contact points, heating the preform to a softening temperature, extending the stretch rods to stretch the preform and introducing gas pressure into the preform to stretch a blow molding portion into a final bottle shape within a mold.Type: GrantFiled: October 29, 2005Date of Patent: January 2, 2007Inventor: William M. Yates, III
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Method of making a stretch/blow molded article (bottle) with an integral projection such as a handle
Patent number: 7153455Abstract: The method involves making a hollow blow molded thermoplastic article having an integral handle. An unblown preform of polyethylene terephthalate (PET) is inserted into a blow mold and thereafter stretched by a stretch rod. Blow gas is then injected into the interior of the preform when the blow mold is closed and the preform is at a stretch temperature. After the preform is blown into the shape of the bottle in the mold, blow gas is discharged from the stretch rod onto an interior wall surface where the handle is to be formed. Heated movable mold segments are then advanced within the blow mold from a first retracted position to a second position thereby compressing an interior wall surface of the article into contact with a facing interior wall surface of the bottle to bond the surfaces at an elevated temperature and form an integral handle extending from the exterior wall of the blow molded article.Type: GrantFiled: May 10, 2004Date of Patent: December 26, 2006Assignee: Sabel Plastechs Inc.Inventor: Samuel L. Belcher -
Patent number: 7121821Abstract: A device for heating parisons made of a thermoplastic material and having a supporting ring for blow molding hollow bodies, having a conveyor means, a plurality of holding means which are arranged on the conveyor means and grip the head area of the parisons between the supporting ring and the mouth and radiant heaters arranged on the path of movement of the parisons carried by the holding means, a shield supported by the conveying means being assigned to each holding mandrel in the form of a cover plate which is located at the height of the supporting ring and has a borehole to receive the supporting ring. Furthermore, there is also a cooling device, which acts directly on the exposed head area. This permits optimum protection of the head area of the parisons, which is not to be shaped or deformed, to prevent unacceptable heating.Type: GrantFiled: September 6, 2002Date of Patent: October 17, 2006Assignee: Krones AGInventor: Herbert Pickel
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Patent number: 7101597Abstract: A medical device, at least a portion of which is composed of a polymeric material in which the polymeric material is a melt blend product of at least two different thermoplastic polymers, one of the thermoplastic polymers being a thermoplastic liquid crystal polymer (LCP) having a melting point of less than 250° C. The portion of the device made from the melt blend may be a catheter body segment or a balloon for a catheter. The LCP blends suitably also include a non-LCP base polymer having a melting point in the range of about 140° C. to about 265° C.Type: GrantFiled: December 12, 2001Date of Patent: September 5, 2006Assignee: Boston Scientific Scimed, Inc.Inventors: Lixiao Wang, Jianhua Chen
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Patent number: 6997336Abstract: A plastic carafe includes a body portion having an enclosed base defined by a plurality of upstanding posts and a plurality of panels separating the posts from one another. The carafe further includes a neck portion having a blown finish at the top of the carafe that defines a wide-mouth. A shoulder portion transitions the posts and panels to the neck portion.Type: GrantFiled: September 16, 2003Date of Patent: February 14, 2006Assignee: Graham Packaging Company, L.P.Inventors: Sheldon Yourist, John Denner, Angie Noll, Roger Prevot
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Patent number: 6946092Abstract: Low polymer stress balloons are made by expanding a tube radially while allowing the ends of the tube to move axially in response to the radial expansion.Type: GrantFiled: October 2, 2002Date of Patent: September 20, 2005Assignee: SciMed Life Systems, Inc.Inventors: William Bertolino, Andrew J. Campbell, Ralph Barry Jr., Nil Chay, Geraldo Carrion, Shahen Andonian
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Patent number: 6888103Abstract: A housing is mounted to a slide that transports a series of preforms downward under the influence of gravity through a pre-heating apparatus toward a reheat blow molding machine. The housing is coupled to the slide so that a selected portion of each of the series of preforms is shielded from the general enviroment, and heating elements and directing elements are fixed within the housing so that heat from the heating elements is directed toward the selected portion of each series of preforms as the preforms desend down the slide to achieve a persistent thermal gradient in the preforms prior to the re-heating and blow-molding of the preform.Type: GrantFiled: May 30, 2002Date of Patent: May 3, 2005Assignee: Ball CorporationInventors: Michael L. Vaughn, Khalid Mejrhirh, Eddie R. Roberts
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Patent number: 6875396Abstract: A PET hot fill bottle (2) has a neck (3) and a body (4). It is stretched and blown into a cavity (14), with internal pressure holding the body against the cavity. During a first period, the cavity is heated to 100° to 160° C. for between 3 to 7 seconds to relax stresses in the body. During a second period the cavity is cooled to 60° to 120° C. for 4 to 8 seconds. This solidifies it—without introducing stresses—so that it can be removed from the mould. The resulting bottle is heat stable when filled with water close to its boiling point, namely at 92° C. to 98° C. For the rapid heating and cooling of the mould cavity, it is provided with two series of passages (16, 17). The former house ohmic heaters (18); whilst the latter are connected to water and air supply lines (19, 20).Type: GrantFiled: February 25, 2000Date of Patent: April 5, 2005Inventor: Tjandra Limanjaya
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Patent number: 6863856Abstract: A method of making a catheter balloon, and a balloon formed thereby, in which a polymeric tube is radially expanded in a mold having a wall with an outer surface and an inner surface defining a chamber, and having at least a section with one or more channels in the wall. The channels result in improved transfer of heat to the polymeric tube within the chamber of the mold during blow molding of the tube to form a balloon, so that the tube is heated more quickly and evenly. One aspect of the invention is directed to a balloon having sections with improved thin walls.Type: GrantFiled: December 30, 2002Date of Patent: March 8, 2005Assignee: Advanced Cardiovascular Systems, Inc.Inventors: Timothy P. Mahoney, Michael J. Flick
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Patent number: 6841117Abstract: A wide-mouth plastic container is formed from a preform that is blow-molded to form an intermediate container article that has blown threads located below a moil. The moil is severed above the blown threads to yield the finished container. A preform and process for manufacturing the wide-mouth container are disclosed.Type: GrantFiled: February 20, 2003Date of Patent: January 11, 2005Assignee: Graham Packaging Company, L.P.Inventors: Marvin Lee Smith, Robert Andrew Stewart, Tracy Marie Momany
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Patent number: 6839652Abstract: A method for determining the temperature distribution throughout the thickness of a preform used in a container reheat stretch blow molding process by measuring the outside surface temperature of a preform or series of preforms at least two times during the period the preform is cooling down after exiting the heat station and before entering the blow molding station in the blow molding machine and calculating the temperature distribution throughout the thickness of the preform based upon the measured outside surface temperatures using a novel algorithm.Type: GrantFiled: July 28, 2003Date of Patent: January 4, 2005Assignee: Eastman Chemical CompanyInventors: Marcus David Shelby, Kevin Douglas Horton, Harry Probert Hall
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Publication number: 20040262817Abstract: The double blow molding process comprises a primary blow molding step of biaxially drawing and blow molding the preform into a primary intermediate product, a step of heating the primary intermediate product to shrink-mold it into the secondary intermediate product, and a secondary blow molding step of molding the secondary intermediate product into a bottle. This double blow molding process is characterized in that, just before the secondary blow molding step, the secondary intermediate product on standby is maintained at a temperature at least 40° C. or 50° C. higher than the mold temperature used in said secondary blow molding step. From such a temperature, it is possible to determine the double blow molding conditions, which can correspond to the levels of heat resistance required for the bottles, and to provide, with high productivity, the bottles having necessary levels of heat resistance.Type: ApplicationFiled: July 1, 2004Publication date: December 30, 2004Inventors: Daisuke Uesugi, Masao Hattori
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Method of making a stretch/blow molded article (bottle) with an integral projection such as a handle
Publication number: 20040245678Abstract: The method involves making a hollow blow molded thermoplastic article having an integral handle. An unblown preform of polyethylene terephthalate (PET) is inserted into a blow mold and thereafter stretched by a stretch rod. Blow gas is then injected into the interior of the preform when the blow mold is closed and the preform is at a stretch temperature. After the preform is blown into the shape of the bottle in the mold, blow gas is discharged from the stretch rod onto an interior wall surface where the handle is to be formed. Heated movable mold segments are then advanced within the blow mold from a first retracted position to a second position thereby compressing an interior wall surface of the article into contact with a facing interior wall surface of the bottle to bond the surfaces at an elevated temperature and form an integral handle extending from the exterior wall of the blow molded article.Type: ApplicationFiled: May 10, 2004Publication date: December 9, 2004Inventor: Samuel L. Belcher