Abstract: A method and apparatus for blow molding a case for housing an object, such as a tool, is disclosed generally comprising first and second mold portions located adjacent each other to create separate cavities for forming base and lid portions of a case and a punch for each portion corresponding to the outline of an object. In certain embodiments, the punch protrudes into the cavity during blow molding to create a sidewall to facilitate a press fit. In some embodiments, additional punches and/or recesses are provided to produce additional apertures or flanges in the walls of the tool case.

Abstract: Apparatus and method for making a molded plastic article having a stretched and crystallized neck finish. In one embodiment, a series of platforms are carried by a conveying apparatus for transporting a series of molded plastic articles along a predetermined path of travel through one or more treatment stations. At a finish widening station, the molded article, having a relatively wide and thin-walled blow-molded body portion, and a relatively narrow and thick-walled unexpanded neck finish portion, is positioned to enable insertion of a mandrel into an open top aperture of the finish portion to widen the finish. The mandrel may include a lower heated tapered portion for expanding the finish, and an upper cooled body portion on which the expanded finish may be cooled. The article may then be sent to a finish crystallizing station having a heating device that heats the widened finish portion for a time and temperature selected to crystallize at least a portion of the widened finish.

Abstract: A molding unit (20) for use in a can shaping process. Container preforms (F) are mounted on a table (16) which is rotated so a blank is moved from an initial loading station (P1) to a molding station (P4). The molding unit includes a two-part mold (20a, 20b) split vertically in half, and an inner surface (56) of each mold half is shaped to produce a desired can profile. Once the preform is in place, a pressurization unit (102) is lowered into place from above the mold onto an open, upper end of the preform. The mold is then closed and pressurized air is introduced into the preform and forces the sidewall of the preform outwardly against the inner surface of the mold to conform the preform into a desired container profile. The height of the preform tries to contract as its sidewall expands, but a force imparted to the preform by the pressurization unit controls the direction of any contraction so to prevent distortion of the container.

Abstract: A method for manufacturing a plastic fuel tank including a built-in neck, by molding a parison in a mold. The neck is molded by locally deforming the parison using a concave counter-form and a convex form configured to enter the counter-form, these two parts being secured one of them to the mold and the other to a core located inside the mold, or vice versa.

Abstract: There is provided a split mold insert and a mold stack incorporating same. The split mold insert for defining, at least partially, a neck area of a preform suitable for blow molding into a final-shaped article, in particular, is provided. The split mold insert comprises a body having (i) a cavity defining portion for defining, in use, a portion of the neck area and (ii) a top projecting portion and a bottom projecting portion located at opposite sides of the body; a first female taper portion associated with the top projecting portion; a second female taper portion associated with the bottom projecting portion; the first female taper portion and the second female taper portion for cooperating, in use, with a first male taper of a first mold component and a second male taper of a second mold component, respectively, for aligning the body into an operational configuration.

Abstract: The invention relates to a mould for the production by means of blowing or blow-drawing of thermoplastic containers which are equipped with an integral handle. According to the invention, two mould halves are provided with two respective inserts which can move transversely to the contact faces. Each of the aforementioned inserts comprises two telescopic pistons, namely: a main piston having a front thrust face, and a secondary piston which is housed in the main piston and which has a curvilinear front weld face. The secondary pistons are moved after the main pistons have applied two wall zones of the container body against one another.

Abstract: A blow mold is disclosed. The mold comprises a pair of mold halves having an operative configuration wherein said mold halves together define a cavity for a container. The container has a main body and a characteristic selected from the group of characteristics consisting of: a push-up base; an integral finish; and an embossed or a debossed feature. Each of the pair of mold halves has a first portion and a second portion formed integrally with the first portion. When the pair of mold halves is in the operative configuration, the first portions collectively define the main body and the second portions collectively define the characteristic. The blow mold can be used for prototyping, and can also be used for production.

Abstract: A blowing mechanism has a body, a moving device and a supplying device. The body has an annular track, a mold assembly and a mounting frame. The moving device is connected to the body and has a mounting bracket, an upper rail device, a lower rail device and a transmitting device. The mounting bracket is connected to the body. The upper rail device is connected movably to the mounting bracket and has a rail, a connecting board, a belt and two rail seats. The lower rail device is connected to the upper rail device and has an inner rail and a bottom board. The transmitting device is connected to the mounting bracket and the lower rail device and has an upper rack, a lower rack and a turning gear. The supplying device is mounted on the body and has a case, a supplying guide and a supplying arm.

Abstract: A blowing assembly is connected to a body of a blowing mechanism and has a bracket, a driving device, a mold assembly and a peripheral-supplying device. The bracket is connected to the body of the blowing mechanism and has a frame, an actuating device and a transmitting device. The frame is connected to the body of the blowing mechanism and has multiple mounting shafts, a mounting board, a second moving board and a primary moving board. The driving device is mounted on the second moving board and has a motor, a driven device and a threaded rod. The mold assembly is connected to the bracket and has a primary mold and two second molds. The peripheral-supplying device is connected to the body of the blowing mechanism over the bracket and has two mounts located at two sides of the second moving board.

Abstract: An extrusion blow molded container is provided comprising a closed base, a body portion extending from the closed base having a surface finish that is substantially free of striations, and an open neck portion extending from the body portion. In an embodiment, the container is comprised of polyethylene terephthalate (PET); the base portion includes a support portion and a substantially elevated portion having a center and a major diameter; and the center is disposed an elevated distance above said surface that is less than about 0.05 the major diameter. A method and apparatus for extrusion blow molding an article is also disclosed.

Abstract: The invention provides a mold for use in a wheel blow-molding device. The mold has a first half and a second half, each half having a rotation direction and a transverse direction perpendicular to the rotation direction, each half having a container-shaped cavity, adapted to receive a parison, wherein the cavity has a body portion and a neck portion; and a blow pin tip disposed in the mold, adapted to be inserted into an open end of the parison in the neck portion of the cavity, the blow pin tip being adapted to blow a gas into the parison to blow mold a container.

Abstract: The invention concerns a process for the production of a container of thermoplastic material by extrusion blow molding, in which during shaping of the container within a multi-part tool the container is provided with at least one connection element (3) which passes through the wall of the container. The connection element (3) according to the invention is of a two-part structure, wherein a part is in the form of a removal cutting element (11). The cutting element (11) serves as a penetration tip for piercing the wall of the container while still in the plastic condition (FIG. 1).

Abstract: A heavy duty plastic hollow board and a mold assembly for manufacturing the same, wherein the plastic board is made through an integrated molding process and the exterior thereof is integrally closed to contain an inward space with a plurality of strengthening ribs; wherein the mold assembly for manufacturing said board comprises a first mold, a second mold, cavities respectively arranged on the opposite surfaces of both molds, a movable mold arranged associated to the outer surface of the second mold which is movable for a predetermined distance from the second mold; a plurality of rib-forming members of the movable mold to be received by a plurality matching through holes of the second mold. As the movable mold approaches and is combined with the second mold, the rib-forming members thread through the through holes and appear in the cavity of the second mold. Thereagainst, while the movable mold leaves the second mold, the rib-forming members completely depart from said cavity.

Abstract: A blow molding system for a thermoplastic blank which is supported in a mold. The system includes a fixed tubular body connected to a high-pressure fluid source and, at the lower end thereof, supporting moveable equipment consisting of a tuyere, the tuyere being defined laterally by a terminal sleeve of the moveable equipment and the bottom thereof being the front wall of the body, wherein the lateral inner wall of the sleeve is configured in such a way that the pressure of a fluid inside the tuyere does not result in a reaction force component on the lateral wall, which is directed opposite to the wall of the mold.

Abstract: According to the embodiments of the present invention, there is provided a split mold insert positioning device and a method of use thereof. More specifically, a split mold insert positioning device is provided. The split mold insert positioning device comprises a split mold insert positioning interface dimensioned in a complementary arrangement to a reference dimension of a given split mold insert; and a tooling interface for providing access to the given split mold insert when the split mold insert positioning interface is positioned over the given split mold insert.

Abstract: According to embodiments of the present invention, there is provided a split mold insert for a molding system. A first split mold insert complementary to a second split mold insert, the first and second split mold inserts configured, in use, to form a neck region of a preform capable of being blow-molded. The first split mold insert comprises a top portion and a bottom portion; the top portion for abutting, in use, a cavity plate assembly and the bottom portion being at an opposite extreme relative to the top portion; a back portion and a face portion opposite each other, extending between the top and bottom portions, the face portion defining a molding surface defining portion for forming, in use, at least a portion of the neck region of the preform; the back portion comprising a connecting interface for connecting, in use, to a slide bar.

Abstract: Blow mold for producing plastic containers, having a base body in the interior of which a body of the container to be produced can be accommodated and the inside wall of which completely surrounds the container that is to be produced, such that the blow mold has a ring for supporting a neck of the container with respect to the blow mold, along with a spacer device protruding inward with respect to the circumferential edge of the ring, for preventing the body of the container from coming in contact with the inside wall of the blow mold in the event of tilting of the container with respect to the blow mold.

Abstract: Methods and apparatuses for creating blow-molded components are disclosed. More particularly, the present invention concerns methods and apparatuses for creating double-wall blow-molded components with one or more protuberances not abutting a parting line of a mold. Generally, the protuberances are created by a method comprising the steps of blowing blow-molding material against a molding surface with a cavity of a predetermined shape, so that the blow-molding material enters the cavity at a first end, and urging the blow-molding back toward the first end of the cavity by moving a piston of a predetermined shape. The invention also concerns apparatuses to employ such methods, and the resulting blow-molded objects.

Abstract: An extrusion blow molded container is provided comprising a closed base, a body portion extending from the closed base having a surface finish that is substantially free of striations, and an open neck portion extending from the body portion. In an embodiment, the container is comprised of polyethylene terephthalate (PET); the base portion includes a support portion and a substantially elevated portion having a center and a major diameter; and the center is disposed an elevated distance above said surface that is less than about 0.05 the major diameter. A method and apparatus for extrusion blow molding an article is also disclosed.

Abstract: Process for producing plastic containers, including an extrusion blow molding machine, is disclosed. For example, in an extrusion blow molding process for plastic bottles, in which plastic tubing (T) which has been extruded from an extruder head (4) in a definable cycle is placed in the mold cavity (7) of a blow molding tool arrangement (6), the inserted plastic tubing is inflated via an infeed blow mandrel by overpressure according to the mold cavity and is then removed from the mold. The extruded plastic tubing (T) is inserted into a mold cavity (7) which is composed of several blow mold cavities (71, 72, 73) which are located axially under one another, two of the blow mold cavities (71, 72) at a time being arranged mirror-symmetrically to one another and connected on their mouth regions and an individual blow mold cavity (73) being separated from the bottom section of the adjacent blow mold cavity (72) by a land region and having a mouth (10) on the outer surface of the blow molding tool arrangement (6).

Abstract: Quick change blow mold tooling includes a pair of mold cavity blocks that cooperate to define a series of blow cavities. The tooling further includes a pushup plate having a series of bottom contours that plug the otherwise open bottoms of the cavities when the pushup plate is against the bottom of the mold blocks. Each mold block is quickly attached to and detached from its supporting back plate using studs that fit into receiving holes on the back plate and cam locking shafts that are accessible from opposite side edges of the back plates. The back plates thus remain secured to platens of the bottle forming machine during change out of the tooling. Similarly, the push up plate has a pair of locking studs projecting from the underside thereof that are received within socket members attached to the machine. The socket members are provided with quick release threaded couplers that can be locked and unlocked by hand.

Abstract: An apparatus for forming a container generally comprises a first mold part having an injection mold portion and a blow mold portion and a second mold part having a core pin. The core pin is configured to cooperate with the injection mold portion in a first position to define an injection mold cavity for forming a preform and an integral cap. The core pin is also configured to cooperate with the blow mold portion in a second position to define a blow mold cavity for forming a receptacle from the preform. The cap may be closed at the blow mold portion to seal the receptacle. One or more threads may be formed on a neck of the container.

Abstract: A mold assembly for blow molding comprises first and second mating mold components, each mating mold component comprising molding surfaces open to a mating face of the mold component and defining the exterior of an article to be molded from a tubular parison and at least one replaceable element being attached thereto by retaining means accessible from the mating face thereof whereby the replaceable elements may be installed and removed while the mating mold component is mounted in a press of a blow molding machine. The replaceable elements comprise any of inserts comprising molding surfaces defining a neck portion of an article to be molded, a blow needle to pierce the wall of and pressurize the parison and heat pipes for transferring heat from the molding surfaces. A blow molding machine comprises a press mechanism for operating a mold assembly and a mold assembly according to the invention mounted thereto.

Abstract: A method and apparatus for facilitating the creation of holes in a blow molded container is disclosed generally comprising first and second mold portions mounted adjacent each other along a seam and a mechanism for creating holes at the seam. In some embodiments, first and second punches are used to create one hole underneath the container's handle. In some embodiments, a third mold portion is used to create a rose surface and create a plurality of holes therein.

Abstract: A mold system for blow molding hollow plastic containers includes an extruder for providing a hollow tube of plastic material having a longitudinal axis. Three mold segments include at least two mold segments that are movable against the third mold segment, in directions perpendicular to the tube axis, between a closed position in which the mold segments form a hollow mold cavity in which the tube is captured and an open position spaced from the tube axis. A blow pin is disposed on one of the mold segments to pierce the tube in the closed position of the mold segments. One of the mold segments may be a mold core movably mounted on a second of the mold segments, and cylinders are mounted on the second mold segment for moving the mold core between an extended position and a retracted position with respect to the second mold segment. The blow pin may be movably mounted on the mold core.

Abstract: A sealed bottle, a sealing method and an apparatus for blow molded aseptic bottles are disclosed. A sealing tool, having two integral blades, laterally displaces one side against the opposing side of an inflated parison. The sealing tools forms a seal which includes of a pair of indentations in collapsed portion of the parison, and a build-up material forming a dam therebetween.

Abstract: A molding apparatus that blow molds a polymeric container having a glasslike appearance and having a shape exhibiting superior stability against toppling. The container includes a base defined by a chime and a bottom having a central push-up region. A plurality of support feet surrounds and protrudes downwardly from the bottom, each of the support feet having a substantially flat contact surface and having a radially outermost point corresponding with a vent of the apparatus at a point wherein the bottom merges with the chime.

Abstract: A method of ejecting containers from a blow mold comprises the steps of: opening a blow mold containing containers, the blow mold comprising a pair of pistons having a head and a heel, an end cap disposed behind the heel, and a pair of ejector rods, each ejector rod coupled to a different piston; simultaneously with the opening forcing a fluid against each head of each of the pair of pistons, extending each of the ejector rods to maintain contact with an opposite side of a center portion of the containers in the blow mold and pushing the containers from the blow mold; and forcing a fluid against the heel of each of the pair of pistons operative to retract the pair of ejector rods away from the containers when the containers are separated from the blow mold.

Abstract: An apparatus for blow molding bottles having a hole formed in a molded interior recess is provided. The apparatus includes a mold having a neck forming cavity having an end flange surface. A recess forming rod is slideable within a hole in the end flange surface from an initial position wherein a face of the rod is withdrawn into the hole in the mold to an extended position wherein the face of the rod protrudes into the neck forming cavity so as to create the molded interior recess. A punch is slideable within a hole in the rod from an initial position wherein a face of the punch is withdrawn into the hole in the mold to an extended position wherein the face of the punch protrudes beyond the face of the rod into the neck forming cavity so as to create the hole in the interior recess.

Abstract: A container is made in two stages from thermoplastics material. In the first stage a preform (1) is injection moulded, the mould parts easily releasing a tubular body (2) with a closed end and an outwardly projecting rim (3) at the open end. In the second stage the still heated preform (1) is blow moulded, possibly with some preliminary mechanical stretching, with the blow pin (13) seated in the open end of the body (2) and the preform (1) held by the other part (7) of its rim. The wall of the body (2) is expanded, and immediately below the open end it is stretched outwardly to meld with the underside of the inner part (5) of the rim. The resultant container thus has a mouth defined by an inset lip. It may be of paint tin form, with a drip groove (9) around the mouth.

Abstract: A dual-chamber container is formed in an injection blow molding process. Two preforms are injection molded around respective core rods. The preforms and core rods are then moved to a blow mold, in which the preforms are molded to the confines of the mold. The blow mold has partial walls between the two cavities, which provide directional control over the preforms as the preform wall portions are blown against and contact welded to each other. The outer walls of the preforms, which must travel and stretch a greater amount than the inner walls, are formed thicker in the preform molding operation.

Abstract: A top block assembly for a container blow mold system is provided together with a method of positioning the neck finish components of the assembly with respect to the front face of a top block half. A method and assembly for positioning a top block half with respect to a main mold half is further provided. The assembly for positioning the neck finish components includes a feeler gauge or spacer that is removably positioned between the top block half and the rear surfaces of the neck finish components. The positions of the neck finish components with respect to the front face of the top block half are adjusted by positioning a feeler gauge between the top block half and neck finish components. A heel is movably mounted to the top block half. A cam having flat surfaces is rotatably mounted to the top block half and engageable with the heel.

Abstract: Each of the clamping plates of the closing unit of the blow molding machine has secured thereto a pivotable locking means which in the calibration position in the swung-up state comes into engagement with a plate which is part of the calibration device. A short friction-type connection which is symmetrical relative to the mold parting plane is thereby established between the blow mold and the calibration cylinder during calibration so that the calibration forces are transmitted in an exact manner. The locking means swing downwards when the blow mold is opened and/or the closing unit returns to the head station. Collisions with other machine parts are thereby ruled out.

Abstract: Method and apparatus for blow molding a plastic container with a mouth and neck portion thereof which is inclined or angled with respect to the body portion of the container, plus a plastic container having an inclined or angled mouth and neck portion.

Abstract: A blow pin assembly is provided for inflating a parison and forming the neck portion of a plastic container in a blow molding apparatus. The blow pin assembly is mountable to a blow rod. It includes a blow pin body including an exterior surface having a tapered portion and a cutting edge beneath the tapered portion. The tapered portion cooperates with the master seal of the mold to automatically center the assembly before the cutting edge engages the shear steels to sever the blow molded article from the mold. The cutting edge adjoins a rim extending substantially perpendicularly from the blow pin body, and can be resharpened one or more times.

Abstract: The invention relates to a method for the production of a container (45″), with an opening (53), whose opening axis (57) is at an angle to the container axis (23), whereby a blank (45) is introduced into a blowing mould (11, 13), a fixing region (47) of the blank (45) pressed against a stop zone (41) on the blowing mould and the blank pneumatically formed in the blowing mould. The fixing region (47) of the blank (45) is pressed against a stop zone (41) on the blowing mould, inclined at an angle other than 90°. The moulding thus occurs such that an opening region axis (58) of the blank (45, 45′) is at an angle to the container region axis (59) of the blank (45, 45′). The opening axis (57), of the blowing mould (11), forms an angle to a longitudinal axis (51) of a stretching drift (49), which may be extended along the longitudinal axis thereof.

Abstract: Each of the clamping plates of the closing unit of the blow molding machine has secured thereto a pivotable locking means which in the calibration position in the swung-up state comes into engagement with a plate which is part of the calibration device. A short friction-type connection which is symmetrical relative to the mold parting plane is thereby established between the blow mold and the calibration cylinder during calibration so that the calibration forces are transmitted in an exact manner. The locking means swing downwards when the blow mold is opened and/or the closing unit returns to the head station. Collisions with other machine parts are thereby ruled out.

Abstract: The present invention is a hollow article with an integral impact absorbing rib and the method of manufacturing the same. The apparatus is a hollow article made of thermoplastic resin and integrally formed by blow molding, comprising a first wall and a second wall confronting across a spacing. There is an integral rib between the first wall and the second wall, wherein the integral rib comprises a flat rib between the walls and one or more hollow ribs adjacent to each of two side ends of the flat rib. The impact absorbing rib is disposed at intervals and in an impact action direction. The rib is uniform in shape, dimensions and wall width, and free from reduction of wall width of the inner rib, yet possessing proper structural support and mechanical strength, and excellent in impact absorbing performance.

Abstract: In a single-row and expandable into a multi-row stretch blow molding method and apparatus, at least one row of tray plates in a tray unit is used to collect molded preforms ejected from the opening clamp of a preform-molding unit, transfer the preforms with or without transfer beads out of the molding area and align them with the center row distances of the downstream processing units. At least one robot having a universal gripper assembly is used to pick up either all or consecutively fractions of the preforms align them to the center distances of the blow mold cavities to place them at variable time intervals into a conditioning, stretch blow molding and oriented discharge unit, releases finished hollow articles and returns to a waiting position at the preform-molding and tray unit again at the preform mold's center distance independent of the preform-molding cycle. Simultaneously, component transfer devices may pick up external components, i.e.

Abstract: A method and apparatus for stabilizing a blow molded plastic preform and container in a blow mold during a demolding operation. The blow mold has a first mold section, a second mold section, and a mandrel. The mandrel cooperates with a pair of spring loaded jaws slidingly coupled to one or both of the mold sections. With the mold sections in their fully open position, the mandrel with an attached preform and/or container travels into the blow mold. During the final stage of closing the mold sections, the jaws contact the finish and restrain the container. As the mold sections begin to open, the jaws prevent any movement of the container relative to the mandrel.

Abstract: Method and apparatus for forming a blow molded plastic container with a mouth and neck portion thereof which is inclined or angled with respect to the body portion of the container, including heating the neck of the container and bending the heated neck of the container.

Abstract: An injection molding machine for forming a multi-layer plastic article by over molding where the second layer of the article includes a portion having a different geometrical profile than the first. The injection mold machine comprises an array of one or more cores which engage arrays of one or more first cavity and arrays of one or more composite cavities. Each composite cavity is formed from the combination of a second cavity and a cavity extension which carries at least a portion of the different geometrical profile. In one embodiment, the cavity extension comprises a pair of cavity portions which are mounted adjacent the core to laterally moveable slides on a movable platen. In another embodiment, the cavity extension is a single element which is moved between a disengaged position wherein the core can be inserted into the first cavity and an engaged position wherein the core is inserted into the composite cavity.

Abstract: A top block assembly for a container blow mold system is provided together with a method of positioning the neck finish components of the assembly with respect to the front face of a top block half. A method and assembly for positioning a top block half with respect to a main mold half is further provided. The assembly for positioning the neck finish components includes a feeler gauge or spacer that is removably positioned between the top block half and the rear surfaces of the neck finish components. A recess may be provided in the top block half to accommodate the feeler gauge. The positions of the neck finish components with respect to the front face of the top block half are adjusted by positioning a feeler gauge between the top block half and neck finish components. The feeler gauge can be replaced with a second feeler gauge of different thickness in order to change the relative positions of the neck finish components and top block half whenever necessary. A heel is movably mounted to the top block half.

Abstract: Method and apparatus for forming a blow molded plastic container with a mouth and neck portion thereof which is inclined or angled with respect to the body portion of the container, including heating the neck of the container and bending the heated neck of the container.

Abstract: The present invention is a hollow article with an integral impact absorbing rib and the method of manufacturing the same. The apparatus is a hollow article made of thermoplastic resin and integrally formed by blow molding, comprising a first wall and a second wall confronting across a spacing. There is an integral rib between the first wall and the second wall, wherein the integral rib comprises a flat rib between the walls and one or more hollow ribs adjacent to each of two side ends of the flat rib. The impact absorbing rib is disposed at intervals and in an impact action direction. The rib is uniform in shape, dimensions and wall width, and free from reduction of wall width of the inner rib, yet possessing proper structural support and mechanical strength, and excellent in impact absorbing performance.

Abstract: A blow molded article includes an outer wall and an article retaining feature projecting outwardly therefrom. The article retaining feature includes a distal wall and a side wall connecting the distal wall and the outer wall of the blow molded article. The side wall is generally orthogonal to the outer wall of the blow molded article, and an inner surface is defined at least partially by inner edges of the side wall, the distal wall and the outer wall of the blow molded article. The side wall has a hole integrally molded therein.

Abstract: A machine and method for blow molding a polyester bottle for carbonated beverages with an internal web structure positioned between two hand-grip depressions. The machine and method uses an injection-molded preform having a web feature and maintains the web of the preform in a precise position during heat-treatment and eventual blow molding into the bottle. Heat-treatment involves an oven capable of heating and cooling selected regions of the preform by using a combination of shields, heat energy reflective surfaces, and cooling airflows. Bottle blow molding involves precise placement of the preform relative to hand-grip surfaces in a blow mold cavity and cooling airflow of the internal web structure before bottle removal.

Abstract: A vulcanization mold (2) includes several segments (8a, 8b; 10a, 10b; 12a, 12b; 14a, 14b) which define two end profiles (8, 10) and two inner profile shells (12, 14) having concave surfaces. With synchronous movement sequences, which take place via linear controls from both ends, the segments (8a, 8b; 10a, 10b; 12a, 12b; 14a, 14b) are moved together under simultaneous shaping pressure. The outer profile shells (8, 10) pass through twice the distance as the inner profile shells (12, 14). The forming of the work blank (20) is completed via the shaping pressure when the mold (2) has reached the closed position. Preferably the upper profile half shells (8a, 10a, 12a, 14a) and the lower profile segments (8b, 10b, 12b, 14b) are operatively connected to each other via toothed racks (40a, 46a, 48a, 54a; 40b, 46b, 48b, 54b) and gear wheels (42a, 44a, 50a, 52a; 42b, 44b, 50b, 52b) including additional sets of teeth (42a′, 50a′; 42b′, 50b′).

Abstract: Extrusion blow molding apparatus (10) having a body mold (12) for forming a body portion (B) of a blow molded container (C) from a blowable, extruded thermoplastic parison (P). The blow molding apparatus also has a neck mold (14) for forming an annular finish portion (15) of the container from the parison, the neck mold being removable from the body mold at the conclusion of the blowing step. A blow pin (16), which is reciprocable relative to the body mold, introduces blowing air into the parison during the blowing cycle, and an outside diameter of the blow pin provides a surface against which an internal diameter of the finish is formed. The process also forms a moil portion (M) that extends upwardly and outwardly from a rim (R) at the top of the finish portion of the container, and an anvil (18) with a moil retention element (18a) with an inwardly projecting flange (18b) is provided in contact with an exterior of the neck mold.

Abstract: A one-piece self-draining container and method and apparatus for forming same. The container includes a body and a finish wall extending upwardly from a body opening. The finish wall surrounds a dispensing spout which extends above the top of the wall. A frustoconical web joins the finish wall and the dispensing spout to form a drain apron gutter channel having a relatively steeply inclined cone angle. A drain opening is defined adjacent the channel for draining fluid from the channel into the container body. A removable cap having a depending skirt defining a thread which mates with an internal thread on the container wall to thereby threadably engage and close the container. The method is performed on the type of extrusion-injection blow molding machine as generally disclosed in U.S. Pat. No. 2,804,654 as modified in accordance with the invention to form the web wall in situ with a frustoconical configuration of uniform cross sectional thickness.