Abstract: A pallet has a plurality of reciprocable spindles mounted thereon. Each spindle can be reciprocated and has an improved bearing support and bias means urging the spindle to one end of its reciprocation path. An improved spindle nose is provided to mount on the spindle as an exchangeable chuck thereby changing the size of the workpiece that can be handled. The spindle nose features an improved means to maintain seal with the preform finish that includes a base from which protrudes a flexible skirt which is extending from the other side of said base, said skirt being sufficiently resilient to maintain sealing engagement with the inside diameter of the preform finish during blow molding; and an air passage extending completely through said locating stud, base, and skirt region.

Abstract: A method and apparatus are provided for molding a container such as an ampoule with a hermetically sealed top or closure joined to the upper portion of the container with a peripheral frangible web. Main mold halves defining a cavity are provided with an inwardly projecting portion that defines an upwardly facing bearing surface and a forming edge. A mandrel is provided with at least a downwardly facing first frustoconical sealing surface and with a frustoconical engaging surface extending downwardly and inwardly from the downwardly facing first frustoconical sealing surface. The mandrel is adapted to be positioned in a length of parison extending from the main mold means to temporarily seal the parison opening during vacuum or blow forming of the container.

Abstract: A method and apparatus for manufacturing a hollow plastic product is provided. In accordance with one aspect, into a mold half having a tubular groove portion and a projecting groove portion which projects outwardly from the tubular groove section is supplied a parison into the tubular groove portion and a clump of molding material into the projecting groove portion. When blow molding is carried out by introducing a pressurized gas into the parison, the clump becomes integrated with the parison thereby providing a hollow plastic product of unitary structure. In accordance with another aspect of the present invention, a parison extrusion nozzle is provided with at least two passages each of which is connected, preferably through a valve, to a corresponding dispensing unit for dispensing a desired molding material. A control unit is provided as connected to each of the dispensing units to control the supply of molding material so that there is obtained a parison having regions of different molding materials.

Abstract: Expanding the parison while the mold side parts defining the walls of the blow-molding chamber, one part per wall, are moved to mold closed positions causes flash to be pinched between each mold part and provides good wall thickness near the edges of the final product.

Abstract: A plastic bottle (10) formed from a preform (30) preferably having an unexpanded long neck (15) with the configuration and dimensions of the finished bottle (10) and an unexpanded handle (16) integral with and extending from the neck (15). The handle (16) includes a support ring (13) integral with the lower end of the neck (15) and an L-shape projection (22 and 24) extending therefrom. The bottle (10) also has an expanded portion (14 and 40) below the ring (13) including a recess (29) which centrally positions the handle (16) to facilitate lifting, carrying and pouring. In forming the bottle (10) in a preferred blow molding embodiment of the invention, the neck (15) remains constant in size while the handle support ring (13) positions and restricts movement of the preform (30) and the expandable portion (38) is blown to form the desired expanded shoulder and body (14 and 40).

Abstract: The present invention provides a multiple platen-multiple position press or injection blow molding apparatus for use in the blow molding of containers in which a preform is molded onto a core and is moved relative to the core to space a body portion of the preform from the core when the core is in the blowing station to facilitate the temperature conditioning of the preform to achieve a desired biorientation of the thermoplastic material from which the preform is made when the preform is blow molded to form a container. The temperature conditioning may be achieved by allowing stabilization of the temperature gradient through the material of the preform with or without the assistance of a supply of gas to the preform at a desired temperature.

Abstract: A process and multistation apparatus for injection blow molding a thermoplastic material to form a blow molded container having an integral injection molded handle is disclosed. The process and apparatus feature an injection mold which is closed to form an injection mold cavity with a contiguous injection mold handle cavity. A preform pin is inserted into the injection mold cavity through a preform carrier to form a preform recess into which hot thermoplastic is injected to form a hollow preform having a solid injection molded handle. After cooling the thermoplastic preform the preform pin is withdrawn and the molds are opened. The injection formed preform may be optionally heat treated prior to the preform being enclosed within a blow mold. The blow mold forms a cavity having the final desired container shape and a cavity into which the handle is enclosed.

Abstract: Apparatus for producing a hollow molded synthetic resin article includes a split mold having an inner molding surface with a contour conforming to the configuration of the desired article, a space between the opposing mold members of the split mold for receiving a heated parison of a thermoplastic synthetic resin in the form of a tube or two parallel-laid sheets, vacuum suction holes provided in the molding surface and the parting surfaces of the split mold, means for opening and closing the split mold, means for applying negative pressure to the vacuum suction holes, and means for blowing heated compressed air against the inside surface of that portion of the parison which corresponds to the parting surfaces in the direction facing the parting surfaces. The attachment of the parison to the parting surfaces is thereby facilitated.

Abstract: A radially expandable core pin is disclosed for blow-molding a thermoplastic container having a body-portion and a neck-portion, with such neck-portion including a dispensing orifice and internal attachment means. The core pin is radially expandable to compression mold the internal attachment means of the container and comprises a plurality of circumferentially disposed core sections surrounding the central axis of the core pin. These core sections are radially movable between a normally collapsed position and an expanded position, and have outer surfaces which mate along their longitudinal adjacent sides when radially displaced to expanded position to form a substantially continuous neck-forming surface thereabout. The neck-forming surface is relieved in a predetermined pattern to form the internal attachment means of the container.

Abstract: A carrier ring for achieving attachment to the thermoplastic perform as the preform is formed in a split injection mold is disclosed. The split injection mold defines a mold cavity into which a core pin is positionable. The mold cavity, along with the position core pin, defines the principle portion of the preform cavity. The remainder of the preform cavity is provided by an annular groove in the carrier ring. This annular groove has a substantially horizontal outwardly extending first wall, a substantially horizontal inwardly extending second wall downwardly displaced from the first wall, and a downwardly and inwardly extending third wall emanating from the outwardmost extent of the first wall and terminating at the inward most extent of the second wall.

Abstract: The heated end of a parison is brought into a finish mold form to shape a finish profile suitable for setting up a closure. The parison is axially stretched by a stretch pin to pull out the heated plastic material adjacent the profile to a thinner cross section. This allows to obtain a considerable saving of weight of the plastic material.

Abstract: A component, for moulding glassware, is produced by forming a first mould, for moulding a first metal, placing an insert or inserts of a second, reinforcing metal within the first mould, casting the first metal in the first mould about the insert or inserts, and machining the casting to the desired final shape. The first metal may be cast iron, and the second metal may be a nickel cobalt alloy. The first moulds are designed so that the flow path of the first molten metal does not impinge directly on the second metal whereby the insert is prevented from being prematurely melted.

Abstract: A blow-molded thermoplastic body is made by a method which comprises the following steps: inflating a hollow parison within a mold cavity for causing the parison to expand and conform to inner wall surfaces defining the mold cavity, whereby the blow-molded body is shaped; further inflating the blow-molded body within the mold cavity for causing a wall portion of the body to expand beyond the mold cavity into a port cavity communicating with the mold cavity thereby reducing the thickness of the wall portion; applying a counter pressure on an outer face of the wall portion for moving the wall portion back in the direction of the mold cavity against an inflating pressure prevailing within the blow-molded body, whereby connecting portions attaching the wall portion to the blow-molded body are reduced in thickness; and discontinuing the application of the counter pressure for allowing the wall portion to be driven anew away from the mold cavity into the port cavity by the inflating pressure.

Abstract: A method and apparatus for injection blow molding hollow plastic articles characterized by a rapid and efficient operating cycle. The injection mold includes a mold cavity and the blow mold is located adjacent the mold cavity in side-by-side relationship. The parison is injection molded into the mold cavity onto a core. The parison on the core is separated from the mold cavity by moving the parison on the core axially in a straight path away from the mold cavity, followed by movement in a substantially arcuate path into axial alignment with the blow mold, followed by axial movement in a straight path into said blow mold.

Abstract: A method and apparatus are provided for molding a container such as an ampoule with a hermetically sealed top or closure joined to the upper portion of the container with a peripheral frangible web. Main mold halves defining a cavity are provided with an inwardly projecting portion that defines an upwardly facing bearing surface and a forming edge. A mandrel is provided with at least a downwardly facing first frustoconical sealing surface and with a frustoconical engaging surface extending downwardly and inwardly from the downwardly facing first frustoconical sealing surface. The mandrel is adapted to be positioned in a length of parison extending from the main mold means to temporarily seal the parison opening during vacuum or blow forming of the container.

Abstract: The method of producing a hollow body from plastic material with an annular protrusion disposed circumferentially around the wall of the body, the method comprising the formation of the protrusion by extruding the protrusion from the wall of the preform after the preform has been made.

Abstract: A method and apparatus for producing hollow plastic articles are disclosed. The articles have a blow-molded portion and a compression-molded portion, and are formed by downwardly extruding plastic at at least one extrusion rate to progressively form a parison having a downwardly facing open end from a first location adjacent an extrusion head toward a second location axially spaced therefrom. A male mold member is provided at the second location. Portions of the open end of the parison are engaged by a plurality of fingers, while the open end travels toward the second location and the engaged portions are moved downwardly at a rate at least corresponding to the extrusion rate. During the travel toward the second location, portions of the open end are radially expanded and guided over the male mold member.

Abstract: Apparatus for producing a tubular premoulding of a thermoplastic material, suitable for subsequent shaping to form containers by a rolling process. The material in a part of a tube is axially oriented as a result of reducing the wall thickness by applying an external pressure which causes the material to flow. The oriented material is moulded by a blow-moulding process into future mouth parts and parts of adjacent neck sections, preferably from two blank parts, joined to one another, of pre-mouldings, the blank parts in the transition between the two mouth parts being severed in order to form two separate blank parts, so that, after closing one end and, if necessary, reworking in order to obtain the requisite closing faces at the other end, the two blank parts each form a tubular pre-moulding.

Abstract: In blow molding an article with a reverse fold, a profiled bar is positioned where the parting line of the mold is to be when the mold is closed. The bar provides a reverse fold in the plastic article during a pre-blow step. In operation, a pre-pinched parison is formed adjacent the bar and as the mold begins to close a small amount of pre-blow air is introduced into the parison folding it against and over the bar. After the mold is closed, blow air is introduced to form the part. A complex part with good wall distribution of material can be obtained by this method.

Abstract: A machine particularly useful for the blow molding of large thermoplastic articles such as cylindrical drums comprises a plurality of stations through which mold cavities are successively advanced. At a first station, containing a cart-mounted blow assembly an article is blow molded to substantially its final form in a cavity with the blow medium being introduced via a blow pin assembly operatively associated with the cavity after the blow assembly has been operatively engaged with the blow pin assembly. After the blowing operation has been completed, the blow assembly is operatively disengaged from the blow pin assembly and the cavity with the blown article is transported in a second station, the blow pin assembly traveling with the cavity. At the second station, an auxiliary blow assembly is operatively engaged with the blow pin assembly to circulate medium through the interior of the article.

Abstract: The heated end of a parison is brought into a finish mold form to shape a finish profile suitable for setting up a closure. The parison is axially stretched by a stretch pin to pull out the heated plastic material adjacent the profile to a thinner cross section. This allows to obtain a considerable saving of weight of the plastic material.

Abstract: This invention relates to a blow pin assembly for use in extrusion blow molding processes to yield thermoplastic containers having a dripless pour lip. The dripless pour lip is achieved by forge forming a portion of the neck moil, which moil is characteristic of extrusion blow molding processes. The shape of the pour lip is dictated by a downwardly facing groove carried by a cutter collar which is part of the blow pin assembly. This groove coacts with a split annular anvil carried by the split blow mold to achieve the necessary forge forming of the container lip. The cutter collar also achieves removal of excess neck moil material by a cutting action achieved between the outside edge of the groove and the split annular anvil.

Abstract: This invention relates to a blow pin assembly for use in extrusion blow molding processes to yield thermoplastic containers having a dripless pour lip. The dripless pour lip is achieved by forge forming a portion of the neck moil, which moil is characteristic of extrusion blow molding processes. The shape of the pour lip is dictated by a downwardly facing groove carried by a cutter collar which is part of the blow pin assembly. This groove coacts with a split annular anvil carried by the split blow mold to achieve the necessary forge forming of the container lip. The cutter collar also achieves removal of the excess neck moil material by a shearing action achieved between the outside edge of the groove and the split annular anvil.

Abstract: Apparatus for moulding an article (11) of thermoplastic material from a parison (10) in which certain parts (17,16) of the parison are re-formed while other parts (13,12,20) retain their shape. A difference in pressure is applied to the wall of the parison during the re-forming process. Material in the parison is also moved in the direction of those parts of the parison which are to be re-formed, whereby attenuation of the material may be avoided entirely, if so desired, also in those parts which are to be re-formed. The invention enables the parison for a bottle to be re-formed to an extent which is small by comparison with the thickness of the material, for example the so-called "neck support" ring and the so-called "pilfer proof" ring, starting with a tube of oriented material. In a device for the application of the invention the elements (22,21,25) are in contact with the parts (13,12,20) of the parison.

Abstract: An integral hinged blow molded container having a single wall is produced by inflating a parison within a mold having a hinge forming area with a draw ratio of greater than 1 whereby the parison is reduced to thickness within the hinge forming area relative to the adjacent area. The thus formed parison is severed about a circumference adjacent the formed hinge to create a top portion and a bottom portion openable and closable about the hinge.

Abstract: A method and apparatus are disclosed for transferring blanks, plastic parisons or other articles to be molded in a sealed cavity. One embodiment includes mold sections which are closeable along a first axis to form a mold cavity and which are movable along a second axis from a first station where the mold sections may receive a moldable blank to a second station where the blank may be molded under pressure. Optional biasing means may be included to hold the mold sections sufficiently close together to hold the blank in the mold cavity as the mold sections move from the first station to the second station. A clamp, or other pressure applying means, exerts a final closing pressure on the mold sections at the second station for molding the blank under pressure. The clamp is stationary in relation to the first and second stations so that the mold sections can move relative to the clamp along the second axis.

Abstract: Apparatus for producing a tubular pre-moulding of a thermoplastic material, suitable for subsequent blow-moulding to form a container comprising a mold in which a future mouth portion and a portion of adjacent neck section of a tube are moulded to form a pre-moulding, preferably from two mutually joined blank parts, by an axial stretch operation and a blow-moulding operation, the parts in the transition between the mouth portions being severed by a cutting device in order to form two separate blank parts. A tubular pre-moulding is produced after closing one end of the particular blank part and, if necessary, reworking in order to obtain the requisite closing face at the other end.

Abstract: Herein disclosed are a bottle of a saturated polyester resin and its method of production. According to the method of the present invention, saturated polyester resin is injection-molded into a parison which is composed of a mouth and a barrel. The mouth of the parison is oriented in the direction of the axis of the parison and in a direction perpendicular to the parison's axis by means of an orienting jig. The barrel of the parison is biaxially oriented by a blow-molding process. The bottle thus produced has been oriented as a whole.

Abstract: A molding machine disclosed herein comprises a rotary disk having a required number of neck molds attached to the under-surface thereof, said rotary disk being located under the base plate, rotary disk capable of being intermittently rotated to thereby successively transport the neck molds to an injection molding stage, a temperature control state and a molded article releasing stage for continuous operation from the injection molding of parisons to the releasing of hollow molded articles. The present invention is characterized in that blow molds and mold opening and closing mechanisms therefor disposed movably up and down in the stretching and blow molding stage are moved up at the stretching and blow molding whereas moved down at the transporting the parisons and hollow molded articles.

Abstract: A blow molding machine is provided with an external center pin so that blowing is accomplished without introducing a mechanical or rigid member within the preform and/or bottle. To do this, the blowing is done by introducing a fluid, preferably a gas such as air, into the preform to expand it. Outside of the preform, meanwhile, is the subject center pin or center rod which is located on the preform center line (axis) and near the middle of the preform bottom. The rod receives a gate disposed centrally on the bottom of the preform when the preform is expanded by the entering fluid. In this manner, the center part of the bottom of the preform is engaged by the center pin which thereafter keeps the preform on center as the blowing action continues. A process is disclosed of blowing using a compressed fluid alone inside the preform to expand the preform axially against the bias of an external resiliently biased center pin.

Abstract: A blow molded single-walled closable container having a compression molded hinge portion is produced by closing a blow mold with a restricted central portion about a parison so as to form two hinge portions and severing the thus formed article into two sections with each of the sections forming a closable container having a top portion and a bottom portion connected by a hinge portion.

Abstract: The preform (1) for the production of hollow articles by blow-moulding possesses a profiled false neck (4) provided with a circular toothed collar (6), and during the thermal conditioning of the preform for the purpose of final blowing, the preform, held loosely by idling holding rollers (8) (9) at the level of the profiling of its false neck (4), is caused to rotate about its longitudinal axis by a toothed drive member (13) which cooperates with the circular toothed collar (6).

Abstract: A synthetic resin bottle produced by blow-molding a parison of a synthetic resin. In the blow-molding process of the parison, the portion of the parison supporting the handle is prevented from being expanded, thereby to sufficiently increase the supporting strength of the handle. Since the bottle product has its drum recessed in the vicinity of the handle, the grip of the handle can be facilitated.

Abstract: In apparatus for molding glass bottles having externally threaded necks, neck ring mold halves are given greatly increased life between down time, as well as increased ease of service, by machining away the threaded cavity portion below the well which accommodates the guide ring, so as to provide a somewhat rectangular recess in the bottom portion of each mold half, and inserting and securing in each mold half a sintered metal threaded cavity insert. Where a double lead thread is utilized, the inserts may be identical in each mold half. Great precision is afforded to the inserts when formed oversize by pressing in a direction perpendicular to with the parting plane, the oversized outer edge surface being then machined parallel to the parting plane to fit precisely within the recess.

Abstract: A method of heating a parison neck by stretching blow molding, wherein an injection molded synthetic resin parison is adjusted in temperature while holding a parison neck, by a neck mold for molding a parison neck, after which the parison is stretched and expanded to form a container such as a bottle, the method comprising at the time of adjusting temperature of said parison, heating a lower end of the neck mold and applying heat enough to prevent formation of an annular constriction in a molded product, to a border between a parison neck covered by the neck mold through the end of said neck mold and a body.

Abstract: An injection stretch-blow molding machine for producing hollow articles such as bottles by simultaneously performing the formation of a parison by injection molding and sharping of the parison by stretch-blow molding. The machine has an injection mold constituted by a male mold part and a female mold part and a stretch-blow mold constituted by a male mold part and a female mold part. The machine further has four neck molds capable of opening and closing to release and clamp the neck of the parison and arranged on a rotary body at a 90.degree. interval. The rotary body is rotatable to bring the neck molds successively through an injection position, heating position, blow position and a discharge position which are arranged at a 90.degree. interval. As the rotary body makes the 90.degree.

Abstract: A method for forming a unitary, hermetically sealed dispensing container wherein a first mandrel is provided to blow-mold the container and wherein a second mandrel is provided for subsequently filling the formed container.

Abstract: A molding machine disclosed herein comprises a rotary disk having the required number of openable and closeable neck molds, said rotary disk being located on the underside of a base plate, said rotary disk being capable of achieving intermittent rotation to successively transport said neck molds to an injection molding stage, a temperature control stage, a stretching blow molding stage and a molded product releasing stage for continuous operation from the injection molding of bottomed parisons formed of synthetic resin to the releasing of hollow molded products such as bottles subjected to the stretching and blow molding.

Abstract: A method for producing a hollow synthetic resin article, which comprises opening a split mold having an inner molding surface with a contour conforming to the configuration of the desired article, feeding a heated molding material of a thermoplastic synthetic resin in the form of a tube or two parallel-laid sheets into a space between the opposing mold members of the split mold, applying a negative pressure to vacuum suction holes provided in the molding surfaced and the parting surfaces of the split mold to vacuum-form the molding material, and while the negative pressure is being applied or after the application of the negative pressure is stopped, closing the mold to form the molding material into the final desired configuration.

Abstract: A plastic blow-molded container is disclosed having a penetrable wall portion or site which is sufficiently thin to permit piercing by a needle, spike or the like without coring or fragmenting, and a thicker recessed wall portion adjacent to the penetrable portion. The penetrable portion is formed during the blow-molding process by expanding the plastic parison over a projection in the mold cavity and into an adjacent recess in the cavity. The thin penetrable portion of the container is formed within the mold recess and the thicker recessed portion of the container is formed by the mold projection.

Abstract: A parison ejector is used in combination with an injection molding apparatus of the type for molding parisons having an injector portion including a plurality of mold cavities communicating with a source of molten plastic material, an ejector portion for engaging the injector portion which includes a movable platen, a plurality of cores shaped and positioned to matingly engage the mold cavities, and an ejector frame which is carried by the movable platen and supports the cores. The parison ejector includes a hydraulic ram which actuates an ejector carriage which carries a pair of jaws pivotally mounted on the carriage and having mating ends which meet to form bearing surfaces which receive cams mounted in the ejector frame. The ends of the jaws form a portion of the mold and the parison is partly formed within it.

Abstract: A method of orienting the neck of a bottle of a saturated polyester resin so as to enhance the physical properties and durability of the neck. The neck orienting method includes the step of inserting an orienting rod having a taper head into the neck which is being heated. The neck orienting method may include the step of orienting only the mouth edge of the neck.

Abstract: An article (11) of thermoplastic material is moulded from a parison (10) in which certain parts (17,16) of the parison are re-formed while other parts (13,12,20) retain their shape. A difference in pressure is applied to the wall of the parison during the re-forming process. Material in the parison is also moved in the direction of those parts of the parison which are to be re-formed, whereby attenuation of the material may be avoided entirely, if so desired, also in those parts which are to be re-formed. The invention enables the parison for a bottle to be re-formed to an extent which is small by comparison with the thickness of the material, for example the so-called "neck support" ring and the so-called "pilfer proof" ring, starting with a tube of oriented material. In a device for the application of the invention the elements (22,21,25) are in contact with the parts (13,12,20) of the parison.

Abstract: Herein disclosed are a bottle of a saturated polyester resin and its method of production. According to the method of the present invention, saturated polyester resin is injection-molded into a parison which is composed of a mouth and a barrel. The mouth of the parison is oriented in the direction of the axis of the parison and in a direction perpendicular to the parison's axis by means of an orienting jig. The barrel of the parison is biaxially oriented by a blow-molding process. The bottle thus produced has been oriented as a whole.

Abstract: Apparatus for drawing a mouth-neck portion of a synthetic resin bottle in the radial direction, by inserting an expanding operation zone of the apparatus into the mouth-neck portion in the heated state and expanding respective drawing pieces of the expanding operation zone in the radial direction. The apparatus includes a cylindrical wall constructed by a great number of drawing pieces, a pressing rod inserted into this cylindrical wall to expand the drawing pieces in the radial direction and an elastic tubular member to be inflated in the radial direction by high pressure compressed air.

Abstract: The disclosure relates to a method and apparatus for blow moulding hollow plastic articles each having at an end thereof, a main opening and a secondary opening defined by an angled passageway. The method includes the step of laterally stretching a tubular parison from which the article is to be moulded so as to receive a primary mandrel for forming said opening and a secondary mandrel for forming the passageway. Air is introduced into the parison through the secondary mandrel to form the inner end portion of the passageway while the parison is expanded to conform to the shape of the mould.

Abstract: A method for producing hollow articles from, for instance, plastic or glass in viscous condition by means of at least one multiple mold comprising a plurality of mold elements into which gobs of the material are introduced and subsequently formed and expanded to finished hollow articles during a molding cycle, and in which the center distances of the plurality of mold elements or of part thereof are changed during each molding cycle; and a machine for carrying out the method.

Abstract: A blow pin assembly for use in blow molding extruded thermoplastic parisons is disclosed. The assembly provides a blow pin tip which effects forge formation of structure on the inside surface of the neck finish of the container. The blow pin assembly utilizes a rotation collar and a cutter collar to aid in removal of any neck moil associated with the blow molding procedure.

Abstract: Herein disclosed is a method of orienting the neck of a bottle of a saturated polyester resin so as to enhance the physical properties and durability of the neck. The neck orienting method includes the step of inserting an orienting rod having a taper head into the neck which is being heated. The neck orienting method may include the step of orienting only the mouth edge of the neck.

Abstract: An injection blow molding machine which is compact but effective in operation. The machine comprises: a machine bed being provided with an injection molding stage having an injection mold and a mold closing mechanism, a heating stage having a heating cylinders, a stretching and blowing stage having a stretching and blowing mechanism and a releasing stage having a molded product releasing mechanism; a base plate which is attached to and above the machine bed leaving a certain space; a rotary disk which is rotatably attached to the under-surface of the base plate; a motor secured to the middle portion on the base plate and interlocked with the rotary disk by an arm and a connecting pin. The invention is characterized in that the space between the machine bed and the base plate carrying the rotary disk is fully utilized for holding mold and other necessary parts.The questions raised in reexamination request No. 90/000,455, filed Oct.