Abstract: A hollow container producing device for producing a hollow container using a pair of parison sheets is provided. The hollow container producing device includes a pair of molds; an intermediate frame to be clamped to the pair of molds; and a transport unit that carries the intermediate frame and a pair of parison sheets to a position between the pair of molds, with the pair of parison sheets being respectively held on opposite sides of the intermediate frame.

Abstract: The invention relates to a tube manufacturing method comprising steps of: enclosing a parison (14) in a mold (6) to form a blank (15) having a first end portion shaped to form a first tube head, a tubular central portion, and a second end portion shaped to form a second tube head, and cutting the tubular central portion (22) into a first skirt and a second skirt to obtain two separate tubes, namely a first tube including the first tube head and the first skirt, and a second tube including the second tube head and the second skirt.

Abstract: A rotary trimmer for trimming flash and the blow dome from a plastic bottle forming a portion of a plastic blow molded log discharged from a blow mold includes flash punching, a neck support plate, and a guillotine blade. The neck support plate is movable by a plate drive to move adjacent the neck of the plastic log to support the neck during cutting of the blow dome and cooperates with a log holder to essentially support the entire outer periphery of the neck. The guillotine blade is movable by a blade drive to pass through the plastic log and sever the blow dome from the neck of the log.

Abstract: A process and a device for the manufacture of a hollow body, particularly of a heat-resistant hollow body, which is molded out of a heated preform of thermoplastic plastic in a contoured blow mold through the introduction of a first medium into the preform, which medium is stored in a first medium storage unit and is under a pressure (p1) (preblowing phase), and the more or less simultaneous stretching of the hollow body through a stretching rod and the introduction of a second medium in the hollow body, which medium is stored in a second medium storage unit and the pressure of which (p2) is higher than the pressure of the first medium (p1) (final blowing phase), and which is cooled by a third medium, which is medium stored in a third medium storage unit (rinsing phase), whereby the preblowing medium is under a pressure of approximately 2-20 bar, the final blowing medium is under a pressure of approximately 15-45 bar, and the cooling medium is under a pressure of approximately 30-45 bar.

Abstract: A blow molding machine for blow molding a container having an integrally formed handle; said container blow molded from a previously injection molded 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.

Abstract: A machine (10) for manufacturing containers, includes a system (82) for providing assistance when changing moulds, including at least one module (84) which, combined with a moulding unit (24), has an actuation device (86) provided with an operating member (88) intended to cooperate with a member (52) for controlling the locking elements (55) when the moulding unit (24) occupies a specified reference position relative to the module (84), the operating member (88) being able to undergo a displacement so as to actuate the member (52) for controlling the locking elements (55) in order to cause the locking elements (55) to move towards at least one of the locked or unlocked positions and to make the mould holders (26) move towards at least one of the open or closed positions of the moulding unit (24).

Abstract: A machine for the manufacture of containers made of thermoplastic, includes at least one molding unit selectively associated with a control module (70) able, in the use state, selectively using a first actuating device (76) to control the locking device and using a second actuating device (78) to control the opening/closing device with which the molding unit is respectively equipped.

Abstract: A single-sided shuttle-type blow molding apparatus having an extruder for substantially continuously extruding a thermoplastic material in tubular form at a moldable temperature downwardly along a vertical axis. The apparatus includes a mold having a set of mold parts adapted to open and close relative to each other to define, when closed, a mold cavity. A shuttle having the mold mounted thereon is arranged to move along a closed path from a first position wherein the mold engages, when open, a finite length of the thermoplastic tube, to a second position away from the first position. The apparatus further includes a blow head adapted to blow the finite length of the thermoplastic tube to form the container as the mold moves from the first position to the second position of the closed path. The apparatus includes no more than one mold. A method is also described.

Abstract: An injection blow molding machine having an injection molding rotor including a plurality of injection molding units with individual split mold cavities for preforms, a transfer rotor, a blow molding rotor including a plurality of blow molds, and a removal rotor, essentially within a shared operating plane, and split mobile neck molding parts which fit into each blow mold and each mold cavity and which are transferred with a preform and removed with a stretch-blown bottle from the blow mold. In the process, each preform is transferred in the neck molding part into the blow mold.

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: The invention relates to a process for the production of moldings composed of a polyoxymethylene polymer via blow molding, in which the polyoxymethylene polymer is extruded to give tubing, using an extruder with a grooved feed section, where the feed section is heated to a temperature in the range from 100 to 230° C., and the extruded tubing composed of the polyoxymethylene polymer is introduced into a blow mold, and a molding composed of the extruded tubing is produced in the blow mold.

Abstract: A single-sided shuttle-type blow molding apparatus having an extruder for substantially continuously extruding a thermoplastic material in tubular form at a moldable temperature downwardly along a vertical axis. The apparatus includes a mold having a set of mold parts adapted to open and close relative to each other to define, when closed, a mold cavity. A shuttle having the mold mounted thereon is arranged to move along a closed path from a first position wherein the mold engages, when open, a finite length of the thermoplastic tube, to a second position away from the first position. The apparatus further includes a blow head adapted to blow the finite length of the thermoplastic tube to form the container as the mold moves from the first position to the second position of the closed path. The apparatus includes no more than one mold. A method is also described.

Abstract: The blow molding machine is characterized in that that the preferably two closing units can be reciprocated along a first guide path extending in a direction transverse to a second guide path which extends from a central removal position of the first guide path to the insertion device, the lower closing plates with the lower mold halves of the two closing units being alternately movable on the second guide path from the removal position to the insertion device and back. The blow molding machine is characterized by an improved mode of operation.

Abstract: Disclosed are a molded article picker for a post-mold device and a related method for the use of the molded article picker for handling a molded article. The molded article picker includes a structure having a surface defining an interior that is configured to surround an end portion of the molded article. A sealing surface disposed on the structure is configured to sealingly cooperate with a surface of an outwardly projecting portion of the molded article in response to an evacuation of the interior, wherein the seal allows for the molded article to be retained with the structure.

Abstract: Disclosed are a molded article picker for a post-mold device and a related method for the use of the molded article picker for handling a molded article. The molded article picker includes a floating element being configured to be movable between an extended position and a retracted position and biased in the extended position. Furthermore, the molded article picker comprises a pressure structure extending through the floating element. The floating element is cooperable with the molded article to define a substantially enclosed volume including the pressure structure. The pressure structure is configured such that by evacuating the substantially enclosed volume the molded article is sealed to the floating element and the floating element is drawn into the retracted position, thereby transferring the molded article to the molded article picker.

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: A catheter having an elongated shaft with a tubular member which forms at least a portion of the shaft and which is formed of a biaxially oriented thermoplastic polymeric material, and a method of forming the catheter shaft by radially and longitudinally expanding the tubular member to biaxially orient the polymeric material. A catheter of the invention has an improved combination of low bending stiffness, high rupture pressure, and high tensile strength, for improved catheter performance.

Abstract: In a method for the production and filling of containers (12), at least one tube (3) of plasticized plastic material is extruded into an open mold (6). The tube (3) is bonded at its advancing end on closing the mold (6) to form the container base. The tube (3) is severed above the mold, by a separating element (21) to form a filling opening. The mold (6) having the tube (3) with a filling opening is moved to a filling position in which the container is filled after the tube (3) formed in the mold by generating an expanding pressure gradient acting on the tube (3). During the movement of the mold (6) into the filling position, the filling opening of the tube (3) is covered by a sterile barrier (23).

Abstract: Process and device for the extrusion-moulding of hollow bodies made of a thermoplastic, comprising the extrusion of a tubular parison, its deposition via the use of a robot arm in a preforming device which takes it into a lower part of a mold in which the parison is blow-molded in order to produce the hollow body. Certain steps of the process may be carried out in parallel. This process and this device are very suitable for producing hollow bodies of complex three-dimensional geometry with a high productivity.

Abstract: This invention relates to the post-formation processing of extruded or injection molded profiles in an economic manner without the need to purchase a blow molding machine, yet still effect post-formation radial expansion or contraction by the application of sufficient degree of heat or the performing of the operation sufficiently quickly to permit the utilization of the retained latent heat from the extrusion or injection molding process.

Abstract: A blow molding mold has first and second fixtures. The first fixture includes drive means, typically in the form of pins, while the second mold fixture has drive receiving means, typically in the form of holes. When the second mold fixture is in registration with the first mold fixture, the drive means are extended to lock and locate the two fixtures together to enable blow molding without a blow molding press. The method of blow molding uses a robotic arm to move a lightweight second mold fixture to accept a parison as it is extruded. After extrusion the arm moves the second fixture toward the first fixture so that the fixtures can be located and locked together. A single robot using a single extrusion head can serve several mold stations depending upon cycle times.

Abstract: A method for forming a container (7) starting from a web (3) of heat-bondable material wound on a reel (4) comprises the following operations: forming a tubular element (5) of predetermined diameter and height; mounting the tubular element (5) over a support (16); closing one end of the tubular element (5) to form the open container (7); inserting the container (7) into a mould (12) after heating if necessary; forcing the walls of the container (7) against the inner walls of the mould (12); opening the mould and withdrawing the container (7) from the support (16).

Abstract: Process and device for the extrusion-moulding of hollow bodies made of a thermoplastic, comprising the extrusion of a tubular parison, its deposition via the use of a robot arm in a preforming device which takes it into a lower part of a mould in which the parison is blow-moulded in order to produce the hollow body. Certain steps of the process may be carried out in parallel. This process and this device are very suitable for producing hollow bodies of complex three-dimensional geometry with a high productivity.

Abstract: A blow molding method includes steps of moving a split mold to a parison receiving position where a parison is supplied and receiving a parison, closing the split mold, performing blow molding at a blow molding position, and opening the split mold at a product discharge position and thereby discharging a product. The method further includes steps of: sequentially reciprocating each split mold in trains of split molds provided opposed to each other across the parison receiving position to and from a position opposed to the parison receiving position; and sequentially reciprocating the split mold disposed at the position where the split mold is opposed to the parsion receiving position to and from the parison receiving position for performing blow molding. There is also provided a blow molding apparatus for carrying out this molding method.

Abstract: Hollow articles of thermoplastic synthetic resin are produced by suction-blowing in an apparatus in which the shaping is decoupled from the extrusion. A preform handler, especially a six-axis robot, engages the preform at the extrusion or coextrusion head and carries it to the closed mold into which the preform is sucked by suction generated in the mold cavity. While shaping is effected in the mold, extrusion can continue at the head to form a further preform.

Abstract: A blow molding apparatus (10) including four molds (21, 22, 23, 24) that move into a common parison receiving position (26) from directions different from the directions that the molds move out of the parison receiving position (26). When in the parison receiving position (26), each mold receives, encloses and severs a length of parison then shapes the parison during blow molding. Two molds (21, 22) alternately move in respective first and second radial directions (36, 40) from the parison receiving position (26) to respective first and second outer positions (38, 39), to a common article take-out position (45) and then back to the parison receiving position (26) from a third radial direction (96). The third radial direction is angularly spaced between the first and second radial directions.

Abstract: A blow molding machine capable of relatively high production rates at relatively low cost is provided. The blow molding machine comprises a base, a reciprocating shuttle mechanism supported by the base, a single blow molding station supported by the base, and adapted to receive a parison for forming the hollow article at the blow molding station, a pair of cooling stations supported by the base on flanking sides of the blow molding station, a pair of blow pin carriages spaced from one another, each of which is connected to the shuttle mechanism and is indexable to the blow molding station and to one of the cooling stations. Each blow pin carriage can comprise one or more blow pin assemblies that are movable independent of the shuttle mechanism between a rest position and a blow position.

Abstract: A molding system has a slide displaceable parallel to an axis through a relatively long stroke relative to a stationary overhead extruder head, a center support fixed on the slide, and a pair of end supports displaceable axially through relatively short strokes on the slide between inner and outer end positions. A pair of inner mold halves carried on the center support are directed axially oppositely therefrom toward the end supports. Respective outer mold halves carried on the end supports are axially engageable with the respective inner mold halves in the inner positions of the end supports. An end-support drive connected between the slide and the end supports moves the end supports between their end positions and a slide drive connected to the slide moves the slide axially relative to the head. Each of the end-support drives includes a respective motor mounted on the slide.

Abstract: A molding apparatus has a pair of mold halves having faces engageable together to form a nonstraight passage having an intake end and an output end, extruder means for forming a hollow plastic preform and feeding it to the intake end of the passage, pump means connected to the output end of the passage for drawing gas therefrom and thereby applying drawing the preform through the passage, and a seal carried on one of the faces, extending along the passage, and engaging the other of the faces for preventing gas flow between the faces into the passage when the mold halves are closed together.

Abstract: Shuttle blow molding apparatus having an extruder or a blow head for substantially continuously emitting a thermoplastic material in tubular or parison form at a moldable temperature downwardly along a vertical axis. A finite length of the thermoplastic material is grasped by a first mold set, which then moves downwardly with respect to the extruder or blow head to provide clearance for a second mold set to move to a position to grasp a second finite length of the emitted thermoplastic. The first mold set is then moved horizontally away to permit the emitted thermoplastic length therein to be blown into a hollow article, and thereafter removed from the first mold set that is permitted to return and engage an other finite length of the thermoplastic material. The second mold set follows the first mold set in a path of travel traced by the first mold set.

Abstract: A parison handling device has a pair of opposed arms with each arm having at least a pair of grippers to selectively engage an extruded parison and transfer it to a second location such as to a mold of a blow molding machine. At least one gripper on each arm is both slidably and generally pivotally movable relative to the arm to facilitate initially engaging and gripping the parison and subsequent closing and stretching of a gripped end of the parison to more efficiently distribute the material of the parison such that after blow molding of the parison, the molded product has a substantially uniform wall thickness throughout. Preferably, a follower attached to each movable gripper is responsive to a profile or contour of a cam carried by each arm to guide the movement of the gripper corresponding to the profile of the cam.

Abstract: The invention refers to a pallet container (10) including a bottom pallet (12), a plastic receptacle (14) arranged thereon and a support jacket (16) closely surrounding the plastic receptacle (14) and fixedly connected (but detachably) on the bottom side with the bottom pallet (12). Conventionally, the thickened pinch-off seam produced in the lower receptacle plate (and also in the upper receptacle plate (22)) through pinching off the tubular parison interferes with a flow of the residual liquid to the bottom-side discharge valve (28). Thus, in accordance with the invention, the inner plastic receptacle (14) is provided with welded pinch-off seams (30) on two diametrically opposing side walls, preferably with one seam ending directly in the integral discharge valve (28). The discharge valve (28) thus lies in the middle of the side walls with the joining weld for the first time entirely in the tube pinch-off area around the blow mandrel within the tube.

Abstract: An improved pulp-forming mold-releasing machine having a turnaround table being reciprocatingly rotatable at a prearranged position within the machine body. A net mold (pulp-sucking mold) includes protruding forming members on the surface thereof while the turnaround table of the machine frame body can be fitted with a lower mold (male mold) having a heating pipe therein on the other surface thereof. A reciprocating slide frame is disposed on the top of the machine frame body and includes an upper mold driving device with an air-oil-pressure diversion cylinder adapted to drive the upper mold (female mold) with a heating pipe to lift. An elevating pulp material container is disposed under the net mold of the machine frame body. The forming members of the net mold turn over to an upward direction after sucking pulp fiber.

Abstract: A take-out system for a shuttle-type blow moulding machine having two moulding assemblies has a single gripper head for taking out moulded articles from both moulding assemblies. The gripper head is carried by a vertical gripper arm which can be raised and lowered by a rack and pinion drive with respect to a carriage that moves in line with the two moulding assemblies. Electric servomotors are used to raise and lower the gripper head and move the carriage under software control so that the motion of the gripper head can be programmed to match a particular moulding machine. The articles may be moulded with tabs that can be gripped by the gripper head, and the take-out system may include a trimmer for removing those tabs, and a waste conveyor for the trimmed material.

Abstract: An anode is embedded in an electrolyte layer applied to the surface of a structure such as a pipe section to provide an ionic conductive path between the anode and structure to supply cathodic protection to the structure, where the natural environment may not provide a continuous electrolyte. The anode is comprised of a material normally used as a cathodic protection anode material, such as, an expanded valve metal mesh or ribbon having either an electrochemically active coating or noble metal coating, or a sacrificial anode metal alloy. The anode material is made continuous from one end of the structure to the other and may be connected to a common bus wire from one end to the other. The anode and structure to be protected are connected using wires to a DC power supply that causes cathodic protection current flow to the structure in the case of an impressed current system. No separate power supply is needed in the case of a galvanic or sacrificial anode system.

Abstract: A method and apparatus is provided to transport parisons from the extrusion die to a second location. The parison is extruded and a collar means is provided to contact the parison near its upper end and create a holding geometry whereby the parison is retained by the collar means without pinching the parison. The parison is then transported vertically or horizontally to the mold unit without closing or pinching the parison. The holding geometry is created by slightly deforming the parison wall near the collar means. The parison is therefore transported to the second location, for example a mold unit, instead of moving the mold unit, to the parison.

Abstract: A parison handling device has a pair of opposed arms with each arm having at least a pair of grippers to selectively engage an extruded parison and transfer it to a second location such as to a mold of a blow molding machine. At least one gripper on each arm is both slidably and generally pivotally movable relative to the arm to facilitate initially engaging and gripping the parison and subsequent closing and stretching of a gripped end of the parison to more efficiently distribute the material of the parison such that after blow molding of the parison, the molded product has a substantially uniform wall thickness throughout. Preferably, a follower attached to each movable gripper is responsive to a profile or contour of a cam carried by each arm to guide the movement of the gripper corresponding to the profile of the cam.

Abstract: The invention relates to a system for preforming an extruded plastics parison including a nonplanar conveyor belt. It also relates to a method for preforming an extruded parison, including a step during which the parison is deposited on a conveyor belt. The conveyor belt is not planar. This step may be accompanied by a step in which the parison undergoes transverse deformation. The invention also relates to a method of manufacturing at least one article, including such a preforming step.

Abstract: In a process and apparatus for producing elongate curved hollow bodies at least partially comprising thermoplastic material a preform is extruded from an extrusion system head and engaged by a gripping means. The preform is moved by the gripping means into the region of a guide stencil disposed above the mold cavity of a mold portion of a divided blow molding mold and introduced into the mold cavity by a simultaneous downward movement of the gripping means and a movement following the configuration of the guide stencil. The guide stencil has two mutually opposite walls, the spacing of which increases in an upward direction and the spacing of which at the bottom of the guide stencil approximately corresponds to the maximum width of the mold cavity. The preform is thus guided towards the mold cavity by the walls, acquiring its definitive orientation with respect thereto by virtue of such guidance, passing through a lower opening in the guide stencil into the mold cavity.

Abstract: A method of manufacturing hollow bodies including inserting into spaced mold halves of a blow mold of a blow molding machine plastic hose-shaped blanks at an extrusion station of the blow molding machine and closing the blow mold, displacing the closed blow mold from the extrusion station to a calibration station of the blow molding machine, inserting thereat blow mandrels into respective cavities of the closed blow mold, lifting, after expiration of predetermined blow time, the blow mandrels, together with the blown hollow bodies to an intermediate position and removing the blown hollow bodies from the blow mandrels lifting the blow mandrels to their initial position thereof, and displacing the blow mold from the calibration station to the extrusion station, with the displacing of the blow mold between the extrusion station and the calibration station being effected by displacing the blow mold at a right angle to a connection line of arranged side-by-side cavities of the blow mold.

Abstract: In order to reduce the weight and cost of LPG pressure-resistant containers, thermo-plastic resin is used in the continuous formation of a hollow container wherein the outer surface of a hollow continuous liner is continuously braided with multiple yarns. The present invention is a system for forming a braided hollow container comprised of a continuous liner forming section 1 which continuously forms the continuous liner 70 for the inner layer 72 of the hollow container in the axial direction through a hollow joining section 71, a braid forming section 2 which uses a braiding machine BR to braid the outside of the continuous liner to form the continuous braided body 73, cutting section 3 which cuts the continuous braided body in the radial direction in the hollow joint section, and a plug welding section 4 which welds a plug 75 to the openings formed by the cutting section; and the pressure-resistant container formed using said system.

Abstract: A method and apparatus wherein an extruder provides extruded plastic parisons to a first and second horizontally movable blow mold assemblies, and each blow mold assembly includes two sets of blow molds, and each set includes a pair of blow mold halves. The blow mold halves are closed about the tubular parisons and moved to one of two blow molding stations where a blow pin at the blow molding station blows the parison to form a hollow blow molded article. More specifically, four platens are provided in each blow mold assembly. A first pair of outer and inner platens supports the first pair of blow mold halves and a second pair of outer and inner platens supports the second pair of blow mold halves. A pair of tie rods passes through all four platens. The first outer platen is attached to the ends of the tie rods. The second outer platen is moved by a mechanism such as a cylinder or toggle mechanism for movement on the tie rods.

Abstract: A blow pin assembly for a rotary blow molding machine having a carrousel that supports a number of molds located about the circumference of the carrousel. Each mold includes a separate blow pin assembly mounted on the mold clamp. The blow pin assemblies each includes a base, a carriage supported by the base, a sub-base supported by the carriage, and a blow pin mounted to the sub-base for movement therewith. The carriage moves the sub-base and blow pin linearly along a first path from a home position, in which the blow pin is retracted away from the mold opening, to an alignment position, in which the blow pin is located directly above the mold opening. The sub-base then moves the blow pin in a direction perpendicular to the first path from the alignment position into a mold-engaging position, in which the blow pin is inserted into the mold opening.

Abstract: In an apparatus wherein a plastic blow molding machine is operated to make hollow containers which are discharged and fall by gravity out of the machine wherein an endless moving conveyor which includes closely spaced vacuum cups is provided and positioned such that a reach of the conveyor is positioned horizontally and such that the vacuum cups face upwardly to grab and hold the plastic containers as they are discharged such that containers are held in axial alignment and circumferential orientation to one another.

Abstract: A parison transporting device includes a conveyor system moveable either in longitudinal or transverse fashion relative to the direction of parison discharge in the tube receiving position below the tube forming head to receive, on the conveyor system, either a straight tubular piece or a tubular piece curved in accordance with the mold cavity of the blow mold. The conveyor system is then moved to the blow mold and into a position where an end section of the conveyor belt is positioned vertically above an end section of the mold cavity with the tubular piece located thereon. A rotating conveyor belt carried by the conveyor system is moved above the mold cavity either in both horizontal directions (X-direction and Y-direction) to arrange the straight tubular piece into the curved mold cavity, or, in the alternative, linearly above the mold cavity to drop the tubular piece, already positioned in curved fashion on the conveyor belt, into the correspondingly formed mold cavity.

Abstract: The invention concerns the manufacture of hollow plastic articles by inflating a preform (4) in a blowing mandrel. The aim of the invention is to reduce the so-called cycle time--the time interval between a preform (4) entering the blowing mould (1, 1') and the next preform (4) entering the same blowing mould (1, 1')--compared with prior art methods in which the initially open mould encloses the preform along the appropriate length when the preform is extruded from the blow-moulding nozzle, the mould then being transferred to a second station, adjacent to the tubular body receiving station, where the preform is inflated by insertion of an inflation and sizing mandrel. This aim is achieved by introducing the inflation gas into the preform, received by the mandrel, while the preform is being transferred from the first station, in which the tubular body is received, to the second station, in which release is effected.

Abstract: In an apparatus for extruding plastic into a length of parison in the form of a vertically oriented hollow tube, molding a container from the parison and for filling the container with liquid product, the apparatus having a extruder, with a parison head, for forming the parison, a hot knife for cutting the parison to a selected length with concomitant release of plastic particulates, gripping apparatus for maintaining an opening at a top of the cut parison, a sealer for sealing a bottom of the cut parison, vacuum apparatus for molding the container with a temporary top opening, an extendable and retractable nozzle for filling the molded container through the temporary top opening with the liquid product and a sealer for sealing the filled container, the improvement including an outer shroud for surrounding the extruder, including the parison head, with H.E.P.A.

Abstract: A method of forming a hollow article, wherein all the operations such as shifting and opening/closing of a die are performed by electric actuators such as electric motors which operate in accordance with a program operation, thus improving the quality of the hollow article as the product. A parison extruded from an extruder is introduced into and held in a die which has been opened by the operation of a die compacting motor. A crosshead associated with the extruder is lifted to draw the parison, and a parison cutting motor operates to cut the drawn parison. Thus, fully automatic production is realized to ensure high yield of the product.

Abstract: A method of manufacturing hollow resin products which are curved two-dimensionally or three-dimensionally. The method includes extruding a tubular parison from an extruder at a constant speed and cutting the parison at a specified length; receiving the parison extruded from the extruder into a conveyer having a feeder which is driven at the same speed as the extruding speed of the parison; maintaining the parison in the conveyer by stopping the feeder temporarily; feeding a leading portion of the parison to a trailing portion thereof successively through an outlet of the conveyer into a cavity of a lower mold of a blow molding machine by driving the feeder, the cavity being curved two-dimensionally or three-dimensionally; and closing the lower mold with an upper mold of the blow molding machine and blowing compressed gas into the parison in the blow molding machine.

Abstract: An apparatus for manufacturing hollow resin products. The apparatus includes an extruder for extruding a tubular resin material and cutting the material into a parison with a specified length; a blow molding machine having an upper mold and a lower mold which form a cavity of a specified shape inside; and a parison delivering machine for receiving the parison from the extruder and feeding the parison into the cavity of the lower mold. The parison delivering machine includes a conveyer which has parison feeder for feeding a parison longitudinally from an inlet to an outlet, a driver for driving the feeder, and at least four shafts which serve as pivots of three-dimensional movement of the conveyor.