Abstract: Apparatus (30) for finishing a blow molding (24) is disclosed as including a rotary head (42) on which a first knife holder (44) is provided for mounting a knife (46) for radial movement with respect to the rotational axis (A). A second knife holder is mounted in a diametrically opposite relationship to the first knife holder and actuated so as to maintain a balanced relationship during rotation of the rotary head. An actuating mechanism (48) actuates the knife holder (44) to move the knife (46) radially inward with respect to the rotational axis (A) during rotation of the head (42) to cut the blow molding received thereby and thereby provide finishing that removes excess material. The actuating mechanism (42) is preferably constructed as a cam actuator (50) including a cam follower (56) and a cam (58) that operate after a first portion (52) of the rotary head (42) is stopped from continued axial movement as a second portion (54) of the rotary head continues to be moved axially during the rotation.

Abstract: An improved part removal assembly (17) particularly for a shuttle-type blow molding machine (10). The part removal assembly includes a plurality of suction cups (95) mounted on a vertically moveable piston (87) that travels along a vertically oriented rodless cylinder (81) and a plurality of suction cups (115) mounted on a horizontally moveable piston (107) that travels along a horizontally oriented rodless cylinder (83). A mold assembly (15) shuttles between an extruder head assembly (11) where a plurality of parisons of molten plastic are captured in mold cavities (25) in the mold assembly, and a blow station assembly (13) where the parisons are blown to form a molded workpiece (31). The mold assembly then opens which causes a flash removal assembly (57) to remove a waste flash portion (55) from a bottom portion (31a) of the workpieces. The bottom of the workpieces are then engaged by the vertically moveable suction cups which lower the workpieces to a position adjacent to a conveyor (117).

Abstract: A process which includes providing a preform including a polymeric material formed to permit the introduction of a fluid under pressure into the preform, heating the preform to a temperature at or above the glass transition temperature of the polymeric material and below the melting temperature of the polymeric material, placing the heated preform into a substantially cylinderical mold with a polished seamless inside surface, introducing a fluid under pressure into the heated preform while maintaining the preform axially centered in the mold, thereby causing the preform to expand without contacting the mold surface, subsequently causing the preform to expand until it contacts the mold surface, heating the expanded preform to an appropriate heat setting temperature above the stretching temperature and below the melting temperature of the polymeric material while maintaining fluid pressure, and subsequently cooling the set preform, resulting in formation of a biaxially oriented seamless belt.

Abstract: A series of driven rolls for separating blow-molded products from segments of flash material in a string of products formed in a synthetic resin continuous molding machine. A first pair of rolls receives a string of products joined by flashes as the products are removed from the dies of a blow-molding apparatus. At least one of the rolls in the first pair of rolls is driven at a first rotational speed. An intermediate pair of rolls receives the string of products and flashes from the first pair of rolls, and the intermediate rolls are driven at a speed faster than the first rotational speed to stretch the string of products and thereby separate the flashing segments from the products. A pair of last rolls is spaced by an interval from the pair of intermediate rolls. The interval between the intermediate rolls and the last rolls is adjusted such that the products and the flashes can be sorted by length.

Abstract: In an air cushion table game, such as air hockey, the air bed, which has an upper surface defining a playing surface, comprises a top layer of material having a multiplicity of air jets exhausting upwardly therethrough and arrayed in a substantially uniform pattern over the playing surface of the top layer to form an air cushion and a bottom layer of material disposed below and connected to the top layer. The top and bottom layers define a single plenum extending therebetween and communicating with each of the air jets, the plenum being of unitary one-piece integral blow molded construction. Preferably, the air bed includes a bumper strip defining a boundary of the playing surface upon the air bed, and the air bed, including the bumper strip, is of unitary one-piece integral blow molded construction.

Abstract: A method of producing a blow molded product. The method includes preparing a tubular part having a groove at a portion that is to be embedded in a body portion. The groove is formed in a peripheral edge portion of a hole in a manner so as to surround the hole. A thermoplastic filler is filled in the groove over the entire area of the groove. The tubular part is then set in a blow mold as an insert. A parison is then expanded within the mold while the temperature is maintained at a level higher than the softening temperature of the filler.

Abstract: A plastic container having base and sidewall portions is provided with corrugations as a unitary part of the sidewall portion. The sidewall portion is of a thickness that would not be capable of supporting itself without the unitary corrugations. The corrugations serve to rigidify, and this impart self-supporting capabilities to, the sidewall portion. The upper edge of the sidewall preferably includes a unitarily formed rim which assists in maintaining the sidewall in its generally tubular condition (and thus more easily facilitates the placement of articles in the container). The container may be closed by a flexible and gatherable terminal portion which is an integral extension of the rim or the upper edge of the sidewall. The containers of the invention are formed by an extrusion blow-molding technique using an appropriately configured blow mold.

Abstract: A container having upper and lower portions, the lower portion having self-supporting side walls and a bottom wall. The upper portion is flexible and non-self-supporting. Preferably, the upper and lower portions are formed of plastic material with the upper portion forming a unitary continuation of the lower portion. The entire container may be formed using blow molding techniques or other conventional means such as co-extrusion.

Abstract: The method and apparatus for making a multi-layer plastic container with an integral handle for holding liquids and the like by enclosing a hollow parison of molten plastic which is at a blow molding temperature, pinching a portion of the hollow parison as the mold clses to form a hollow moil portion and neck portion, simultaneously pinching a portion of the hollow parison to form a hollow handle portion while leaving a portion of the parison to provide a passage from the moil poriton to the handle portion and the expanding the parison by supplying gaseous pressure to the moil portion and from the moil portion to form the container from the moil portion through the passage to form the handle.

Abstract: Injection-blow molding apparatus in which maximum mold density is obtained by alternate arrangement of circumferentially continuous blow molds and injection molds, with closure of the blow mold being obtained by a shoulder forming sleeve or shoudler forming portion of this blow mold which is moved into abutment with a body forming portion of the blow mold.

Abstract: A mold and a process for controlling the weight and wall thickness distribution in a blow molded plastic manufactured article or a family or related articles involves simultaneous formation of the manufactured article and a waste article. The waste article is removed and recycled to manufacture further articles. The waste article forming chamber increases the apparent depth of the manufactured article chamber to create a larger apparent surface area, so that the parison is being blown over a much larger surface area, creating a reduced actual part weight and actual wall thickness.

Abstract: A method for removing flashing from a low density plastic blow molded bottle which includes nesting the bottle from which the flashing is to be removed such that substantially its entire surface is engaged in the housing, to facilitate the removal of the flashing from the neck of the bottle without damage to the bottle. The flashing is secured with jaws at the juncture of the flashing with the bottle to remove the flashing without damage to the bottle.

Abstract: A foamable plastic material is introduced to an extruder to produce a tubular parison of the material that is subsequently clamped between mold halves moving both axially and radially inwardly to form cavities for open mounted containers. Cavities for two containers are provided with each set of mold haves clamped together around the parison at the middle of the mold set to provide individual container cavities extending on either side of the clamped portion, said individual cavities terminating in the mouth portion of the container cavity which is joined in a mouth to mouth relationship with an individual container cavity of the next set of mold halves.

Abstract: Apparatus and a related process for blow molding an ultra thin plastic film bag in which sufficient heat is generated in the process to form an effective heat seal or weld along an edge of the bag. The blow mold halves are provided with laterally aligned, outwardly extending projections intermediate upper and lower edges of vertical parting wall surfaces of the mold halves. The projections and cavities formed above and below the projections are configured so that the temperature of the plastic during blow molding and pinch off above the melting point of the plastic to heat seal an edge of the bag. The invention also provides an ultra thin film plastic bag formed with a heat sealed bottom seam.

Abstract: An apparatus is disclosed having a lower housing assembly and an upper clamping assembly wherein the flashing from the neck or top of a bottle, particularly a low density bottle, is removed without damaging the bottle.

Abstract: On the sizing unit of a blow molding machine, one or more blow mandrels are mounted in blow mandrel holders and are centered in sizing plate openings. To obtain faster and more accurate centering, the blow mandrel holder has independently adjustable sleeve and flange parts. The sleeve adjusts axial location while the flange fixes radial location. Conical mandrel tips and sizing plate openings facilitate rapid alignment as the blow mandrels are lowered.

Abstract: A pinch-off clamp 20, built into a top 12 of a hollow core 11 within a blow molding machine 10, has jaws 21 and 22 that open to receive a leading end 18 of a parison 15, which descends into the hollow core. Then jaws 21 and 22 close together to pinch off and hold a leading region of parison 15 at top of core 11. Once parison 15 is pinched off and held closed, it can be ballooned and draped over core 11 and then blown into a double-walled box formed between the core and cavity mold parts closed around the core.

Abstract: A method of making flat bottles with flat or concave bottom by free extrusion of a plastic tube includes blowing of an intermediate form with circular cross section and shaping the latter essentially mechanically to the flat bottle at simultaneous final blowing for achieving clean radii. It is essential that the intermediate form is blown at a length corresponding to about the height of the flat bottle, with a circumference in the body area of -1 to about -10%, however, in the bottom near area of the side walls from 0 to about +15%, with regard to the corresponding circumference of the flat bottle. The radius of curvature at the junction from the body wall to the bottom should correspond to about the radius of curvature at the junction from the body wall of the broad side of the flat bottle to its bottom. The bottom part corresponding to the pinched end of the tube is pinched off during shaping.

Abstract: A blow molding parison (10) being draped around a generally rectangular mold part (12) is spread from its extruded cylindrical shape into a generally rectangular shape (14), as it descends from an extrusion head (11). Before the open bottom (20) of the parison reaches a clamp (25) on the mold part, a jet of air is blown downward through the open bottom to draw in the parison's side and end regions (21 and 22 respectively). This reduces the size of parison (10) and helps it fit within the clamp and also forms the end regions (22) of the parison into a pair of opposed pleats (23) extending inward from the ends of the pinch-off line when clamp (25) closes. Further descending of the parison unfolds the pleats into gussets (24) extending toward corner regions (27) of mold part (12) so that the parison can drape around the mold part corners.

Abstract: On the sizing unit of a blow molding machine, one or more blow mandrels are mounted in blow mandrel holders and are centered in sizing plate openings. To obtain faster and more accurate centering, the blow mandrel holder has independently adjustable sleeve and flange parts. The sleeve adjusts axial location while the flange fixes radial location. Conical mandrel tips and sizing plate openings facilitate rapid alignment as the blow mandrels are lowered.

Abstract: When blow molding elongated serpentine tubes or similar articles, loading of the mold cavity with the parison can present a problem. The parison can stick against the wall of the mold cavity. Moreover, a large diameter parison must be used, i.e. the parison must have a diameter equal to the total width dimension of the article, and consequently a large volume of flash is produced. The flash must be trimmed and recycled. In order to avoid these problems, inserts are placed in the mold to define portions of the mold cavity, particulary at corners. Air under pressure is fed into passages in the outer surfaces of the inserts and discharged through small orifices in such inserts against the parison to guide and drive the latter fully into the mold cavity. A vacuum can also be applied to the end of the cavity remote from the parison entry point for drawing the parison into the mold.

Abstract: An apparatus is provided for fabricating a wide-mouth plastic container, having an annular flange extending radially outwardly at the wide-mouth, from a stretch blow-molded intermediate article, having a dome-like accommodation portion extending radially-outwardly at a flange area and upwardly and inwardly from the wide-mouth of a generally cylindrical body portion. The apparatus provides for a two stage cutting and trimming operation which produces a precision concentric uniform flange around the wide-mouth of the fabricated container and provides for alternately and simultaneously performing the fabricating operations to provide a desired speed of operation of the apparatus.

Abstract: A method of forming a container having upper and lower portions, the lower portion having self-supporting side walls and a bottom wall. The upper portion is flexible and non-self-supporting. Preferably, the upper and lower portions are formed of plastic material with the upper portion forming a integral continuation of the lower portion. The entire container may be formed using blow molding techniques or other conventional means such as co-extrusion.

Abstract: An apparatus for extracting, trimming and discharging blow molded plastic bottles includes a rotary turntable and a plurality of bottle transfer units spaced around the turntable. A drive indexes the units past the stations at which bottles are extracted from mold halves in an inverted position, righted, trimmed and discharged to a take away conveyor.

Abstract: A process for forming a separable laminate container includes the steps of coextruding at least two substantially non-adhering thermoplastic compositions to form a tubular parison having a relatively thick outer layer and a relatively thin inner layer. The parison is subsequently blow molded and trimmed to provide an open-ended container body and an inner liner which is separable along the interior walls of the container body to permit closing and/or sealing of the liner, independent of the container. A lid may also be applied to the container body.

Abstract: This relates to blow molded containers, and particularly to the formation of blow molded containers formed of a plastic material which is subjectable to a high degree of biaxial orientation for maximum strength. Two containers are formed in each blow molding operation with each container having throughout the stress areas thereof a high degree of biaxial orientation. A container may be in the form of a bottle having an as formed open bottom which is closed by a metal end unit seamed in place. Other containers will have open mouths closed by conventional closures including metal end units which are seamed to the container body or by closure caps which may be releasably interlocked with the neck finish of the container in several known modes. In every instance the containers are formed with a minimum of scrap. This abstract forms no part of the specification of this application and is not to be construed as limiting the claims of the application.

Abstract: An automatic cutter for separating a blow molded plastic object into two parts. The cutter is capable of cutting a rectangular object into two parts. The cutter operates by grasping the blow molded object to be cut and piercing the object with a knife blade or other cutting means such as a laser. The object is then rotated and the height of the cutter is controlled depending upon the degree of rotation and the shape of the object. The method of performing the cutting operation is also disclosed herein.

Abstract: A method of manufacturing blow molded plastic cases of the type comprising two hollow hinged containers where at least one of the containers has a compartment, and a door for the compartment is presented. The method allows the manufacture of compartment doors as part of an integrated manufacture without requiring a separate blow molding step to make the door. The method comprises blow molding a standard size door as one face of a first hollow container, in an area of the container which would otherwise be cut out and discarded, removing the door from the container, storing the door for future use, and assembling the first hollow container with a second blow molded hollow container to make a first case. A third and fourth hollow container are blow molded, and an area sized to accommodate the door stock is cut from the third container. The door is retrieved from stock and mounted in the third hollow container.

Abstract: An improved cutting sleeve for the removal of flash from thermoplastic containers is disclosed. When used in conjunction with a blow-pin the cutting sleeve is movable relative to the blow-pin. In a preferred embodiment the cutting sleeve comprises two portions of different diameter. Use of the cutting sleeve results in an improved finish of the container neck.

Abstract: A process of forming biaxially oriented tubular articles by repeatedly performing a cycle of operations which includes engaging a thermoplastic tube by a first clamping member over a first region at a trailing end of the tube and engaging the tube by a second clamping mechanism over a second region at a spacing from the first region so as to define between the clamping mechanisms a portion of the tube to be longitudinally stretched and radially expanded; moving the clamping mechanisms apart to stretch the tube portion therebetween longitudinally; admitting pressure fluid into the tube portion to expand it radially and form a biaxially oriented bubble adjacent the leading end of the tube, and severing a substantial part, but not all, of the bubble from the tube to form the tube with a radially outwardly flared end as the leading end of the tube for the succeeding cycle of operations.

Abstract: Apparatus is provided for straightening a parison tube (58b) in an apparatus of the type in which thermoplastic tubing (48) is extruded into open halves (24 and 26) of a blow mold (22) and a parison tube (58b) is severed from the thermoplastic tube (48) concurrently with the blow mold being rotated around an axis (28). The present invention orients the curvature of the parison (58b) in a predetermined plane (52) by accelerating the parison tube (58b) transversely to the axis (90) of the parison tube (58b); and then the parison tube (58b) is straightened by applying jets of air (76) against the neck and moil portion (68) of the parison tube (58b), thereby straightening the parison tube (58b), and thereby preventing the neck and moil portion (68) of the parison tube (58b) from being pinched between the mold halves (24 and 26) in the area of the neck and moil cavity (38).

Abstract: Apparatus and method are provided for straightening a parison tube (58b) in an apparatus of the type in which thermoplastic tubing (48) is extruded into open halves (24 and 26) of a blow mold (22) and a parison tube (58b) is severed from the thermoplastic tube (48) concurrently with the blow mold being rotated around an axis (28). The present invention orients the curvature of the parison (58b) in a predetermined plane (52) by accelerating the parison tube (58b) transversely to the axis (90) of the parison tube (58b); and then the parison tube (58b) is straightened by applying jets of air (76) against the neck and moil portion (68) of the parison tube (58b), thereby straightening the parison tube (58b), and thereby preventing the neck and moil portion (68) of the parison tube (58b) from being pinched between the mold halves (24 and 26) in the area of the neck and moil cavity (38).

Abstract: A method and apparatus for trimming molded hollow plastic articles having flash and a finish for a closure. Articles are moved in succession through the load, deflashing, facing, inspection, rejection and unload stations of a trimming apparatus by vacuum heads. The articles are picked up by vacuum heads and transferred through the stations by intermittent rotation of a turret carrying the vacuum heads. To ensure proper location, each article is picked up in the load station by a vacuum head and continuously engaged by this vacuum head throughout the deflashing, facing and inspection stations and into the unloading station unless rejected and released in the rejection station.To facilitate loading, unloading and operations in the work stations on the articles, their orientation can be changed from one station to another. To enable variation of the cycle time of the apparatus, the turret and the operating mechanism in the various stations is driven by a common variable speed drive.

Abstract: A tranparent thin bottle-shaped container is produced by means of a technology for biaxial orientation blow molding a cylindrical piece with a bottom from polyethylene terephthalate material. The pieces are molded in large number in each injection molding process of an injection molding machine. The pieces thus formed immediately after the injection molding are held simultaneously in large number at the gates integrally projected therefrom by a base plate moved forward at the front of the mold in the injection molding machine. They are then conveyed to a gate cutting unit provided near the injection molding machine. The gates are cut from the pieces sequentially by the gate cutting unit and are conveyed onto a conveyor. The pieces are gradually cooled from the hot molded temperature during the conveyance and are additionally cooled while being conveyed on an oblique conveyor installed with a cooler to room temperature or lower predetermined temperature.

Abstract: This relates to the blow molding of containers wherein the containers are formed of biaxially oriented plastic material. A multi-sided hollow member is blown within a convention blow mold using a conventional type of preform. Each side, when severed from the top and bottom of the hollow member and from each other forms a tray or box like container having a bottom, side walls and a peripheral sealing flange. The efficiency of the container from a weight to capacity standpoint is at a maximum due to the biaxial orientation of the plastic material.

Abstract: This relates to a container which is formed of a thermoplastic material, preferably PET, wherein the container wall and flanges have a high degree of orientation and the required strength characteristics utilizing a minimum of resin in the formation thereof. An intermediate article of manufacture is formed with this article having a generally bottle-like configuration. The intermediate article of manufacture, which is blow molded from a conventional preform configuration, includes a lower portion in the configuration of the desired container and an upper portion which is an accommodation portion. The accommodation portion is removed from the container and becomes scrap which is reground. This abstract forms no part of the specification of this application and is not to be construed as limiting the claims of the application.

Abstract: Blow molding apparatus for manufacturing containers, the apparatus having a blow station, a parison forming station to one side of the blow molding station, a container trim station at the other side of the blow molding station and a multiple station mold carrying slide for shuttle movement between a first position below the parison forming and blow molding stations and a second position below the blow molding and trim stations. The shuttling movement of the slide takes place between a pair of movable platens that are capable of opening and closing the molds. Improved structure in the apparatus insures that the blow heads will not separate from the molds during blowing, provides for trimming of the containers at the trim stations and for deposit of trimmed containers in upright positions on a conveyor.

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 molding plastic products of virtually any complicated configuration is provided. When a parison is extruded out of a nozzle, a separating agent, preferably oil, is supplied into the parison as a lubricant. Since a thin film of the separating agent is formed on the inside surface of the parison, portions of the inside surface do not stick together even if they are brought into contact from some reasons. This insures to mold a plastic product of a very complex configuration. Use of a separating agent also allows to form sheet-type products by dividing the parison into several sections as desired. This is a very efficient way of forming sheet-type products since at least two may be formed at the same time.

Abstract: This relates to the cutting or trimming of a blow molded polyester resin article utilizing a CO.sub.2 laser. The article is axially positioned and rotated while the laser beam is focused and concentrated on a preselected portion of the article. The laser beam beneficially vaporizes the polyester resin in the cutting thereof as opposed to forming a dust. Further, the action of the laser is one wherein a certain melting occurs so that the resultant cut edge of the retained part of the article is rounded and sealed.

Abstract: An extrusion blow molded container is provided having an integrally formed generally annular pouring lip including an upwardly facing convex surface beginning at a generally vertical inner wall of the container and curving through an arc of less than 180 degrees. The lip is undercut forming a sharp downwardly directed annular edge on the lip. The lip can be formed by cutting the lip with a downwardly curved cutting tool bearing against an upwardly curved anvil, the cutting tool forming the upwardly facing convex surface of the lip and the anvil forming the undercut lower surface of the lip.

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 plastic jar is formed by blow molding a combination adapter and jar and thereafter the jar is cut from the adapter utilizing a laser beam. The jar may be blow molded from a preform which is of an injection molded laminated construction so that the wall of the jar is formed of plural layers. The head generated by the laser beam will melt and bond together these layers as opposed to permitting delamination as would occur should the jar be cut from the adapter by a knife or the like. The cut surface of the jar forms the mouth defining surface of the jar and it is preferred that the cut be inclined at a slight angle to a plane normal to the axis of the jar. Damage to the diametrically opposite surface of the jar by portions of the laser beam being utilized for cut off passing through the jar is prevented by a pressurized gas supply tube which is in the path of the laser beam and serves as an absorber for stray rays. This abstract is not to be construed as limiting the claims of the application.

Abstract: This relates to the blow molding of containers wherein the containers are formed of biaxially oriented plastic material. A multi-sided hollow member is blown within a convention blow mold using a conventional type of preform. Each side, when severed from the top and bottom of the hollow member and from each other forms a tray or box like container having a bottom, side walls and a peripheral sealing flange. The efficiency of the container from a weight to capacity standpoint is at a maximum due to the biaxial orientation 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 the excess neck moil material by a shearing 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 excess neck moil material by a cutting action achieved between the outside edge of the groove and the split annular anvil.

Abstract: A method for making a hollow fiber separation device including the steps of forming an integral structure which comprises at least one tubular housing portion and an elongated chamber portion extending in elongated relation to the tubular housing portion and communicating with the housing portion adjacent opposed ends thereof. One provides an aperture in a central area of the elongated chamber and inserts hollow fibers for diffusion into the housing portion. One then provides closed ends to the housing portion and spins the structure on an axis between the ends, adding potting compound to the chamber portion through the aperture. Accordingly, the potting compound migrates radially outwardly through the chamber to the closed ends of the housing portion, to encase the ends of the hollow fibers in the potting compound.

Abstract: This relates to a container which is formed of a thermoplastic material, preferably PET, wherein the container wall and flanges have a high degree of orientation and the required strength characteristics utilizing a minimum of resin in the formation thereof. An intermediate article of manufacture is formed with this article having a generally bottle-like configuration. The intermediate article of manufacture, which is blow molded from a conventional preform configuration, includes a lower portion in the configuration of the desired container and an upper portion which is an accommodation portion. The accommodation portion is removed from the container and becomes scrap which is reground. This abstract forms no part of the specification of this application and is not to be construed as limiting the claims of the application.

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: 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 in 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.