Abstract: A method and apparatus for fabricating a composite part with a shape memory polymer (SMP) apparatus usable as both a rigid tool and as a bladder. The SMP apparatus may be heated until malleable, shaped, and then cooled in a desired rigid tool configuration. The composite material may be applied onto the SMP apparatus and then placed into a rigid external mold and heated to composite cure temperatures at which the SMP apparatus is malleable. In some embodiments, an impermeable sheet of material may also be placed over portions of the composite material to compress it against the SMP apparatus. A pressure differential may be induced which urges the SMP apparatus to compress the composite material against the rigid external mold. When the composite material is cured, the pressure differential may be equalized and/or reversed and the malleable SMP apparatus may be removed from within the composite part.

Abstract: A method for manufacturing lamp shell to improve structural strength and light penetration includes steps of: providing a plastic material, injecting the plastic material into a injection molding equipment to form a preform containing a first space with an opening and a connecting section at one end and a closed another end to form a light penetrating section, and placing the preform in a blow molding equipment and blowing the plastic material by injecting gas to inflate the preform through gas pressure to form a second space at a greater size than the first space to become a lamp shell. The lamp shell thus formed has a greater structural strength to meet safety requirements, and also provides improved light penetration, and can reduce material consumption of the lamp shell to save production cost.

Abstract: The mould top support (3) for shaping the bottom of a thermoplastic bottle by what is called the “boxed top” process comprises: a base (10) interposed between the said mould top (3) and a sliding bolster (11) which is guided on the frame (6) of the mould carrier unit, which base (10) is made in the form of a dual-acting cylinder actuator, the rod (14) of which supports said mould top (3). The base plate (17), which closes off the cylinder of the actuator is provided with a rapid assembly finger (18) on the bolster (11). This base plate (17) includes, around the finger (18), on the one hand, holes designed to allow the sealed passage of nozzles that deliver a heat-transfer fluid and demoulding air into the mould top (3) and, on the other hand, zones for the attachment of the feed nozzles for the chambers (21 and 22) of the cylinder actuator, which nozzles are all placed parallel to the axis x-x? of displacement of said mould top (3).

Abstract: A method of making a plastic container that has a tethered closure using an extrusion blow molding process includes steps of extruding a parison, capturing the parison within a mold and inflating the parison against the mold to form a container blank having a container portion, a closure portion and a tether portion for connecting the container portion to the closure portion. The tether portion, which is preferably elongated and string like, may be formed out of flash material that is created during the molding process. The resulting container is relatively inexpensive to manufacture and facilitates the plastic recycling process.

Abstract: Blow molding tools and a method of blow molding which provide that the tool have a retractable push up section in the base which allows for the article molded by the tool to have a recessed base internal to an otherwise hollow structure. As the push up is moveable, adjustment of the push up portion can be performed during an automated blow molding operation so as to allow release of the blow molded article.

Abstract: Process for manufacturing a fuel tank equipped with an internal accessory and having a plastic wall produced from a parison, said process comprising, in order, the following steps: a) the accessory and the molten parison are introduced into a mould so that the accessory is surrounded by the parison, said mould comprising cavities equipped with at least one moving part; b) a pressurized gas is introduced inside the parison to carry out a pre-blow moulding of said parison; c) the pre-blow-moulded parison is pressed locally against the accessory using the moving part in order to firmly attach the two without piercing the parison; d) the mould is closed and the final blow moulding of the parison is carried out by flattening it against the mould cavities using the pressurized gas; and e) the tank is removed from the mould.

Abstract: Embodiments of the present techniques provide electrolyzers made using thermoformed electrode assemblies and diaphragm assemblies. Each electrode assembly is made from two plastic rings and an electrode plate using a twin sheet thermoforming technique. A first plastic ring is laid in a mold having the appropriate shape to form the electrode assembly. The electrode plate is laid on top of the first plastic ring and is generally centered on the ring. The second plastic ring is laid over the electrode plate, and is generally centered over the electrode plate. The plastic is heated to soften the plastic, and a vacuum is pulled on the mold to pull the softened plastic into the shape of the mold. The mold is closed over the assembly to seal the two plastic rings together. After cooling, the molded part may be removed, resulting in a hollow plastic rim surrounding an electrode plate.

Abstract: Process for manufacturing a plastic hollow body, said process comprising the following steps: a) a molten plastic parison is extruded, in an extruder, through a die; b) at least one longitudinal cut is made in the parison; c) the parison is introduced into a mold comprising two cavities; and d) the hollow body is molded by conforming the parison to the mold cavities, said die being equipped with a passage for the molten plastic which gradually modifies the shape of the parison so that it is substantially flattened on exiting. Die suitable for implementing this process.

Abstract: The use of nucleating agents to manufacture polymeric stents is disclosed. The resulting stents may have increased crystallinity, decreased crystal size, increased mechanical properties, and faster degradation times.

Abstract: A method for forming a container includes receiving a parison, enclosing the parison with a mold that includes a cavity, and inflating the parison in said mold to form a blow molded container with a moveable region at the cavity. The method further includes repositioning the moveable region before filling the blow molded container.

Abstract: A hollow article is provided, comprising a first wall and a second wall, where the first and second walls are positioned in opposing relationship and define a space therebetween. A plurality of protruding structural pillars extend from the second wall and span the space, each of the structural pillars having an end surface integrally bonded with an inside surface of the first wall.

Abstract: The invention provides a compression blow formed article formed from a composition comprising at least the following: 1) a polypropylene homopolymer and 2) a propylene-based polymer.

Abstract: A compression molded preform for forming an invertible base hot-fill container, and systems and methods thereof. The preform includes a body with a first open end, a second closed end or end cap of hemispherical shape, and a sidewall extending between the first end and the second end. At least a portion of the second end is thinner than any portion of the sidewall. Further, the second end is gateless and has an inner surface that is substantially smooth along its entire area. The compression molded preform is blow molded to form a plastic container with an invertible or movable base. The invertible or movable base is responsive to, or can be moved based on, internal forces or pressure associated with processing the container with a filled product.

Abstract: A mold device for forming a plastic container from a preform. The preform includes at least one exterior feature formed thereon. The mold device comprises a mold defining a mold cavity, and a central exterior rod being movable within the mold cavity. The central exterior rod includes a locating feature formed therewith that is engagable with the at least one exterior feature of the preform for maintaining a central orientation of the preform within the mold cavity during forming.

Abstract: Provided is a process for producing a hollow article provided with an internal component. The process comprises providing a molding station having first and second mold portions together defining a mold cavity. A parison having a top and bottom end is then positioned within the molding station. Using a carrier, at least one component mounted on the carrier is inserted into the parison through the top end of the parison. The parison is then pressed against the component using displaceable mold cores provided in each of first and second mold portions, after which the carrier is removed from the molding station. The top and bottom ends of the parison are sealed, and the molding station is closed. Blow molding pressure is applied to the parison to urge the parison against the contours of the mold cavity, after which the molding station is opened and the formed hollow article is removed.

Abstract: An apparatus for folding a catheter balloon comprises a stationary base member; a rotatable drive hub which is moveable in relation to the stationary base member; and a pleating head aligned with respect to the stationary base member and to the rotatable drive hub. The pleating head includes at least three segments, each having a proximal end and an angled distal end with at least one angled side face terminating in an edge of a predetermined length. Each segment has a centerline between the proximal and distal ends, each segment having a proximal point and a distal point, and the proximal point being pivotally coupled by pins to the stationary base member and the distal point being pivotally coupled by pins to the rotatable hub member. The segments are arranged so that the segment distal ends are disposed adjacent to and a predetermined distance away from a central point and defining a central aperture with a spiral-pleat dimension having at least three channels in communication with a central aperture.

Abstract: A method and apparatus for manufacturing a molded product that includes a resin coating step of coating molten resin onto a forming mold having a minute uneven portion on the surface thereof, a compressing step of pressing the molten resin using the forming mold to thereby arrange the shape of the molded product, and a solidifying step of cooling and solidifying the molten resin. The resin coating step supplies the molten resin to a resin coating device including a discharge port and, while moving the resin coating device, discharges the molten resin onto the minute uneven portion of the heated forming mold from above to fill the molten resin into the minute uneven portion substantially in the same shape and thickness as those of a final shape of the molded product.

Abstract: Disclosed is a process for preparing injection stretch blow molded containers from poly(hydroxyalkanoic acid) compositions comprising a poly(hydroxyalkanoic acid), an ethylene ester copolymer, and a nucleator.

Abstract: A method of manufacturing a venturi tube 10? having a certain fluid flow direction is provided. The method provides a first core member 11 in a mold. The first core member has a periphery and an end 21 of a certain size. A second core member 17 is provided in the mold upstream of the first core member. The second core member has a periphery and an end 22 with a size that is less than the certain size. At least a portion of the end of the second core member is disposed adjacent to at least a portion of the end of the first core member such that a step is defined between the first and second core members. Material is molded about the peripheries of the first and second core members such that the peripheries define a stepped fluid flow surface of a venturi tube, and so that any resulting flash occurs only in the certain flow direction.

Abstract: A method for forming a container includes receiving a parison, enclosing the parison with a mold that includes a cavity, and inflating the parison in said mold to form a blow molded container with a moveable region at the cavity. The method further includes repositioning the moveable region before filling the blow molded container.

Abstract: A forming method, in a mold fitted with a wall forming a cavity, of a container from an intermediate container including at least one lateral protrusion projecting toward the exterior of the container. The method includes a boxing operation of pushing back the lateral protrusion in order to form, by turning it around an articulation zone, a hollow reserve projecting toward the interior of the container and a local cooling operation, after turning the protrusion over, of sweeping a circulation fluid over the articulation zone.

Abstract: A forming method, in a mold fitted with a wall forming a cavity, of a container from an intermediate container including at least one lateral protrusion projecting toward the exterior of the container. The method includes a boxing operation of pushing the lateral protrusion by an insert movably mounted with respect to the mold between a retracted position in which the insert is retracted into a recess formed in the wall and a deployed position in which the insert protrudes with respect to the wall, in order to form, by overturning, a hollow reserve projecting toward the interior of the container. Also included is an operation to pressurize the intermediate container, including, prior to the boxing operation, injecting a fluid under pressure into the intermediate container; and a local pressurization operation, prior to the boxing operation, of injecting a fluid under pressure into the volume defined in said recess between the lateral protrusion and the insert.

Abstract: A forming method, in a mold provided with a wall forming a cavity, of a container from a blank, which includes a boxing operation of pushing back the material of the blank by an insert movably mounted with respect to the wall of the mold between a retracted position in which the insert is retracted into the wall, and a deployed position in which the insert protrudes with respect to the wall, in order to form on the container, by pushing back, a hollow reserve projecting toward the interior of the container. Additionally, a local pressurization operation is performed, after formation of the hollow reserve, of injecting a pressurized fluid between the insert and the hollow reserve.

Abstract: A method of producing a container and a closure comprises blow molding a body comprising a container portion and a closure portion joined together, and separating the closure portion from the container portion. A container and/or a closure produced according to the method are also disclosed, as well as an intermediate product for producing a container and a closure.

Abstract: A container forming assembly and method includes receiving a parison within a cavity of a mold, enclosing the parison within the mold having a wall with a recess, inflating the parison in the mold to form a blow molded container where the blow molded container has a sidewall, a movable region formed at the recess, and a hinge circumscribing an interface between the sidewall and the movable region, and moving the movable region toward an interior of the blow molded container about the hinge before filling.

Abstract: A resin molded body can give a heat-insulating or radiation function of providing extremely good heat transfer, has high reliability, and is manufactured with a simple process at low cost. The resin molded body is formed by integrally injection molding of a pipe portion (1), which has at least a curved portion (3) and passes a fluid therethrough, and a flat plate portion (4).

Abstract: A dual constituent container includes a compartment for liquids and an elongate inwardly directed recess open to the container exterior and isolated from the compartment. The container is formed by blow molding, using a mold that incorporates a shaping feature projected longitudinally into the mold cavity. The shaping feature incorporates an arrangement of longitudinal channels having a channel width such that when a thermoplastic preform is expanded into contact with the mold cavity walls and the shaping feature, portions of the expanded preform span the channels and cooperate with the channels to provide passages that accommodate pressurized air to facilitate separation of the expanded preform from the shaping feature. The same portions of the expanded preform can partially protrude into the channels, thus to form longitudinal ribs along the recess which aid in frictionally holding a secondary constituent.

Abstract: Injection stretch blow molded (ISBM) articles containing a bio-based polymers and methods of forming the same are described herein. The method generally includes providing a propylene-based polymer; contacting the propylene-based polymer with polylactic acid to form a polymeric blend; injection molding the blend into a preform; and stretch-blowing the preform into an article.

Abstract: Process for manufacturing a plastic hollow body, the process comprising the following steps: a) a tubular stream of molten plastic is extruded; b) this stream is taken up by means of a tensioning device; c) a transverse cut is made in this stream so as to create a parison having one free edge that is not taken up by the tensioning device; d) the parison is moved relative to the tensioning device so that the free edge of the parison is also taken up by the tensioning device; and e) at least one longitudinal cut is made in the parison over its entire length. Equipment suitable for implementing this process.

Abstract: Method for fabricating a fluid connector for fuel cell system: (a) a thermoplastic parison (19) is extruded, (b) the parison is placed in a mould (10a, 10b), (c) an intermediate zone is created, in which the two walls of the parison are joined in a gastight manner, (d) a gas is blown inside the parison into each cavity of the mould, and (e) the mould is opened.

Abstract: An extrusion blow-molding method for plastic containers, for example, plastic bottles, is disclosed, wherein a one- or multi-layer plastic tube is extruded with a predetermined extrusion pressure through an annular gap, which is delimited by an extrusion die provided on an extrusion head and a axially adjustable mandrel and which can be adjusted with regard to the width thereof. The extruded plastic tube is introduced into a mold cavity of a blow-molding tool arrangement, blow-molded into a plastic container in accordance with the mold cavity by overpressure and then demolded. Additional plastic material is added in metered quantity to the extruded plastic tube at least in some regions in the direct vicinity of the mouth of the extrusion die.

Abstract: An apparatus (1) for moulding plastic containers (10), including a transport device (2) which transports the plastic preforms, including a heating device (4) for heating areas of the plastic preforms (10) and including a stretching device (6) mechanically acting upon the plastic preforms, which stretching device stretches the plastic preforms (10) along the longitudinal direction (L) thereof. According to the invention the heating device (4) and the stretching device (6) are arranged in such a way that the plastic preforms may be heated before and after the stretching of the plastic preforms (10).

Abstract: The present invention relates to a base assembly (100) for forming a base portion of a plastic container. The base assembly comprises a base pedestal (104), a base mold attached to the base pedestal, a push rod (102) movable between a first position and a second position with respect to the base mold to reposition a portion of the plastic container, and an activation mechanism adapted to move the push rod between the first position and the second position.

Abstract: Disclosed is a polystyrene based polymer/layered compound nanocomposite for injection blow molding or injection stretch blow molding of articles. The nanocomposite can reduce shrinkage and warpage to the preform during the reheating process compared to neat polystyrene. The incorporation of layered compounds can increase the processability of PS preforms, help improve heating efficiency, and improve bottle mechanical properties. The layered compound can be treated with chemicals or compounds having an affinity with the styrene monomer or polystyrene, thus producing a treated layered compound having an affinity with the styrene monomer or polystyrene. The monomer and the layered compound can be combined prior to polymerization. The polymer and layered compound can be combined by solution mixing in a solvent.

Abstract: A thermal effect from a bottom cutoff portion of parison is dispersed and reduced by forming at least three pinch-off lines in an outer surface of a bottom and laying out these pinch-off lines radially from a center of the bottom of a bottle-like direct blow molded product made of a synthetic resin, which prevents a deeply dented portion from developing in an inner bottom surface. In the case of a square body, four pinch-off lines are disposed in the shape of a cross and are positioned along diagonal lines on the bottom surface and one of the diagonal lines is located on the parting line. Each outermost end of the pinch-off line is placed near bottom foot where parison walls are locally drawn and molded, which reduces the drawing rate at the foot to prevent the walls from getting extremely thin.

Abstract: A catheter inflatable member forming mold can include first and second frames that mate to define a mold cavity, the mold cavity defining a main cavity portion and a bulge cavity portion, the mold cavity being sized to receive an elongated tube member therein. The mold can also include a pin member with a head portion positioned in the mold cavity, the pin member extending into the mold cavity, the head portion of the pin member being moveable in a first direction to contact and move the tube member towards the bulge cavity portion of the mold cavity during molding.

Abstract: A bottle comprising a body capable of containing a fluid; a spout fluidly connected to the body; a collar comprising at least one attachment area, said collar capable of removably securing a cap; a skirt functionally connected to the collar; and a drip concentrator concentrically interposed between the spout and the collar; wherein the bottle is continuous. In one embodiment, the skirt visually engages with the body.

Abstract: An apparatus and method for forming cavities in pouches. The packages are used for packaging sterile medical products. The apparatus has a frame and a tongue plate member. A pouch is placed onto the tongue plate member to form a cavity into at least one side of the pouch.

Abstract: A device for molding a container from a thermoplastic material in which a heated parison is pre-blown by supplying low-pressure blowing air from a low-pressure air supply and then the blow molding is completed by subsequent supply of high-pressure blowing air and in which the high-pressure blowing air flowing out of the container that has been completely blow molded is supplied to the low-pressure air supply via a reversing mechanism during a transitional phase. A pressure monitoring is performed in the area of the low-pressure air supply and in which, after the transitional phase, the container is vented with respect to an ambient pressure whereby the pressure in the low-pressure air supply is controlled by varying the duration of the transitional phase.

Abstract: The method and device are used to blow form containers. A preform is elongated by means of an elongation bar after thermal conditioning inside a blow mould and is moulded into a container under the effect of the blow pressure. Initially, a first blow pressure provided by a low pressure supply is used, followed by a higher pressure provided by a high pressure supply (43). The blow air is supplied via at least one blow pressure valve and at least one part of the high pressure blow air is fed into the low pressure supply after the container has been formed. The reintroduction of blow air into the low pressure supply is controlled by means of a return valve (47) which is mounted parallel to the blow pressure valve. An outlet of the return valve is connected to the low pressure supply.

Abstract: Method for manufacturing a plastic fuel tank by moulding a parison in a mould, in which method the parison is locally deformed during moulding of the parison in order to obtain an impermeable hollow built-in connector provided with a screw thread, and to do so by means of a concave counter-form and a convex form that can penetrate the counter-form, these two pieces being secured, one to the mould and the other to a core located inside the mould, or vice versa, and at least one of these pieces being provided with a screw thread, the moulding of the connector taking place by the convex form penetrating the concave counter-form.

Abstract: A plastic container that is preferably formed using a blow molding and trimming process includes a container main body portion and a lid mounting portion. The lid mounting portion includes a sealing flange and a flexible transition portion connecting the sealing flange to the container main body portion. The flexible transition portion preferably has at least one notch defined therein so as to form a hinge permitting downward movement of the sealing flange when a lid is secured on to the container. In another embodiment, more than one notch is provided defining multiple hinges that provide a compound hinge effect in order to reduce stresses on the molded plastic material during use of the container.

Abstract: A method of producing a container, dispenser, and closure comprises blow molding a body comprising a container portion, a dispenser portion, and a closure portion joined together, and separating the closure portion from the container portion and the dispenser portion. A container, dispenser, and closure made according to the method are also disclosed, along with an intermediate product for producing a container, dispenser, and closure.

Abstract: The invention relates to a resin polymer blend comprising at least two dry blended, non-melt processible resin polyimide particulates, wherein the non-melt processible resin polyimide articulates are molded by compression molding.

Abstract: A fuel tank that is substantially impermeable to fuel vapor has a shell with an interior for holding fuel, an opening for receiving fuel into the interior, and a fill nipple with a barrier layer. The fill nipple has an outer surface and an inner surface defining a passage extending between a pair of generally opposed ends of the fill nipple. One of the ends is attached to the shell such that the passage is aligned with the opening to allow fuel to flow through the passage and into the interior of the fuel tank. The fill nipple has an inner layer of material forming the inner surface, and an outer layer of material forming the outer surface, and has at least one intermediate layer of material forming the barrier layer. The intermediate layer is formed from a material that is different in composition from the inner and outer layers.

Abstract: An injection molding method to manufacture hollow plastic parts, whereby at least one plastic part's hollow is shaped by evacuating an internal portion of the flowable material of an injection mold's cavity (12) using a pressurized gas and a gate of said mold (10) and thereupon the molded article's aperture so made shall be sealed off, characterized in that, following said flowable material's being removed from a blind duct (24) into a gate branched to it and after being partly forced back into said hollow, said molded article shall be elected from the injection mold (10).

Abstract: Process for manufacturing a plastic hollow body, said process comprising the following steps: a) a molten plastic parison is extruded, in an extruder, through a die; b) at least one longitudinal cut is made in the parison; c) the parison is introduced into a mould comprising two cavities; and d) the hollow body is moulded by conforming the parison to the mould cavities, said die being equipped with a passage for the molten plastic which gradually modifies the shape of the parison so that it is substantially flattened on exiting. Die suitable for implementing this process.

Abstract: The invention relates to a preform (1) for making a package by blow-moulding comprising three separate components joined to one another, namely a side wall (3), a base (4), and an upper part (2) comprising an opening, characterized in that the thickness of the side wall (3) is smaller than the thickness of the base (4). The invention also relates to a package obtained by blow-moulding said preform (1).

Abstract: The device for thermoforming an object presenting an undercut portion. The device may include a thermoforming mold having a base portion and at least two undercut-forming portions in the vicinity of an end; a countermold; and a moving thermoforming piston. The device further may include holding means suitable for holding the rim of the object relative to the countermold, and, in order to unmold the object, said portions of the mold and the holding means are suitable for being controlled in a sequence in which the undercut-forming portions are moved apart, the holding means are active and hold the object against the countermold, and at least the base portion of the mold is spaced apart from the countermold while the holding means are active.

Abstract: The present invention relates to thermoplastic hollow vessels, tanks, drums and other industrially applicable housings. The invention is adaptable as plastic fuel tanks with low fuel permeability, e.g., less than 5 g.·mm/m2 day as a mono-layer structure. These vessels exhibit good sub 0 0C impact properties and are formed by relatively inexpensive blow molding or rotomolding processes. Disclosed are mono-layered hollow vessels comprising an uncompatibilized, fused blend composition of polyoxymethylene, thermoplastic polyurethane and a copolyester. In one embodiment mono-layered hollow vessels comprise uncompatibilized, fused polyoxymethylene, thermoplastic polyurethane and copolyester in the respective wt. amounts of 100, 5-15 and 5-15. According to a more preferred aspect the wt. ratio of thermoplastic polyurethane to copolyester is from 1:3 to 3:1.