Abstract: Described are devices and containers that are scalable, modular, and lockable laterally and vertically with other like containers for a variety of applications. A container is formed by a wall attached at first end to a top end section with an opening and attached at a second end by a bottom end section. A container may have one or more of a tongue, formed on the wall, having and interconnecting mechanism to be received and interlocked by a groove. Vertical interconnectivity is accomplished with mechanisms to stack containers and prevent swivel using a ridge and channel interlocking arrangement.

Abstract: An object is to provide an injection stretch blow molding machine and a method for molding a polyethylene container capable of molding a favorable hollow container even if its preform is released from an injection mold early. The injection stretch blow molding machine and the method for molding a polyethylene container molds a preform by injecting and filling a molten polyethylene resin into an injection mold, which includes a cavity mold and a core mold both cooled to a temperature range of 5° C. to 25° C., transfers the molded preform to a blow molding mold, and molds a hollow container by blowing the preform within a time range of ±2 sec from a point in time when a temperature of the preform reaches a first minimum point after a point in time when the injection mold completes being opened.

Abstract: A method for selective carburization of an article using low pressure induction carburization includes: providing or procuring an article including a surface; subjecting the article to directed induction heating, wherein a first portion of the surface of the article is inductively heated to a temperature that exceeds a carburizing temperature, while a second portion of the surface of the article remains at a temperature below the carburizing temperature; and simultaneously with subjecting the article to directed induction heating, subjecting the article to low pressure carburization, thereby selectively carburizing the first portion of the surface of the article while not carburizing the second portion of the surface of the article.

Abstract: A blow molding apparatus for mitigating a difference in flow rates of a liquid supplied from a blow nozzle to a preform. The blow molding apparatus includes a blow nozzle that mates with an open tube portion of a preform and a seal body that opens and closes the blow nozzle. A filling head extends along an axial direction of the blow nozzle and is provided at one end with a liquid supply channel connected to the blow nozzle and with a liquid introduction channel connected to the liquid supply channel from the side. A pressurized liquid supply unit is connected to the liquid introduction channel and supplies a pressurized liquid to the liquid introduction channel. A spiral guide groove is provided around an axial center of the liquid supply channel in an inner peripheral surface of the liquid supply channel.

Abstract: A molded article supply apparatus is provided in a transport device 30 having transport members 20 on which molded articles 1 having mouths 2 are held in an inverted state, with the mouths 2 facing downward, and which are provided with rod members 22 to be inserted into the molded articles 1; and a transport path 31 on which the transport members 20 are continuously transported. The molded article supply apparatus comprises a supply unit 110 disposed above the transport path 31, for holding the molded articles 1 at predetermined intervals and lowering the molded articles 1, while transporting the molded articles 1 in synchronization with movement of the transport members 20, to supply the molded articles 1 to the transport members 20.

Abstract: A device for manufacturing and filling beverage containers (12) having thin walls and/or at least partially unstable shapes under the influence of heat is described, in which the containers (12) are manufactured by blow molding of preforms (10), then filled with a hot liquid filling product (16), next pressurized by a compressed gas (18), and then sealed. The preforms (10) and the containers (12) molded therefrom are pressurized during blow molding at a blow molding temperature, which is essentially below 110° C.

Abstract: A hot fill type plastic container includes a finish, a bottom and a main body that is generally rectangular in transverse cross-section. The main body has an upper dome portion, a lower label portion and a waist groove defined between the upper dome portion and the lower label portion. Both the upper dome portion and the lower label portion have front and rear surfaces as well as opposing side surfaces that are narrower than the front and rear surfaces. The opposing side surfaces of the upper dome portion have a substantially vertically oriented reinforcing element defined therein that is recessed with respect to the surrounding sidewall of the upper dome portion. The reinforcing element extends into the waist groove, which increases the flexibility of the dome portion above the waist groove and protects the dome portion against damage as a result of contact with other containers during the filling and packaging processes.

Abstract: A method for providing an internal surface temperature profile of a thermoplastic preform (10, 22) during a stretch blow molding production process comprising at least the steps of: (a) heating a plurality of in-line cold preforms (10) in the production process to provide a plurality of in-line heated preforms (22); (b) diverting at least one of the in-line heated preforms to provide at least one off-line heated preform (30); (c) providing the remaining the in-line heated preforms to one or more stretch blow molds (24) for forming the heated preforms into blow molded products (12); and (d) locating one or more temperature sensors (34, 36) inside the or each off-line heated preform (30) of step (b) to provide an inside surface temperature profile of said preform(s).

Abstract: A beam of fiber-reinforced curable thermosetting composite material is preliminarily assembled in an uncured condition. The beam is placed between two forming tools, namely a lower and an upper tool, shaped in such a way as to give the lower and upper flanges a predetermined shape, at least one of the flanges having a non-rectilinear profile viewed in a longitudinal vertical plane. Two longitudinally elongate rigid inserts are placed between the flanges at the sides of the web and are covered in respective airtight tubular bags. The spaces between the upper tool and the lower tool on the two opposite longitudinal sides are sealed. The open opposite ends of the tubular bags are also sealed in such a manner that the pressure applied in an autoclave during the step of curing causes the tubular bags to swell and presses them against the two opposite faces of the web and against the flanges of the beam. On completion of curing, the upper forming tool is removed and the inserts are extracted sideways.

Abstract: In a resin heat exchanger unit, a resin pipe having straight portions and curved portions and a plurality of resin fins are integrally molded and there can be realized high reliability, high heat exchange efficiency, and a simple manufacturing process. The resin heat exchanger unit includes a resin pipe (1), which has straight portions (2) and curved portions (3) provided alternatively and continuously, and a plurality of resin fins (4) connected to the pipe (1), the pipe (1) and the fins (4) being integrally injection-molded.

Abstract: A method for blow molding containers having cross-sections of a non-circular shape from preforms, in which a temperature profile varying at least in the circumferential direction of the preform is produced by means of at least one heat transfer element, for which purpose the preform and at least the heat transfer element are oriented toward one another by a relative rotational movement in the circumferential direction of the preform, the heat transfer element is rotated relative to the stationary preform about a heat transfer element axis during the relative rotational movement. Further, a device for blow molding such containers where the heat transfer element and the holder are rotatable about a heat transfer element axis and are coupled with a rotational drive.

Abstract: Processes for manufacturing hollow structures such as spars for helicopter rotor blades, fixed wings for aircraft, and other aerostructures can include the provision of a path for gases to exit the material from which the spar is formed as the material is heated and cured, to help eliminate voids within the material caused by the presence of such gases.

Abstract: The invention relates to manufacturing thermoplastic material containers (2) with a petaloid bottom (4) by drawing-blowing hot preforms (16) in a blowing mold that has a petaloid mold bottom (1) including radiating ridges (13) alternating with cavities (11) that are adapted to form the valleys (7) and the feet (5), respectively, of the container bottom; during drawing, heat losses are reduced in longitudinal zones (19) of the end part (20) of the preforms, extending over the bottom (18) and over an axial portion of their body (21), distributed over the periphery of the ends of the preforms facing respective cavities (11) of the mold bottom (1).

Abstract: Method and system for making a product (1) having a solid body (2) and having one or more cavities (3, 15) inside that solid body, with a broad surface and a small thickness. A liquid material is provided within a mold (4), and solidification of the liquid material is controlled in a position dependent way from the outside of the product. When using a thermoplastic material, the system may cool said liquid material less in areas that are projections of the cavities on the outside of the product on its broad surface. When using a thermosetting material the system may include means (5, 9) for controlled heating the liquid material, excluding the projections of the intended cavities. Once part of the product has sufficiently solidified outside the intended cavities the liquid material is driven from the intended cavities by means of a fluid. In the product some cavities may be provided with a conductive layer or structure, e.g.

Abstract: A method for manufacturing an elongate stiffening element and a rigid shell structure integrated with at least one elongate stiffening element. The method includes providing a preformed, form-stable reinforcement member, which has a hat profile with two inwardly directed, opposing flange portions, covering the reinforcement member with a curable composite material to form an external hat profile having outwardly directed flanges, and integrating this assembly with either a curable or preformed shell structure of composite material.

Abstract: The invention relates to manufacturing thermoplastic material containers (2) with a petaloid bottom (4) by drawing-blowing hot preforms (16) in a blowing mold that has a petaloid mold bottom (1) including radiating ridges (13) alternating with cavities (11) that are adapted to form the valleys (7) and the feet (5), respectively, of the container bottom; during drawing, heat losses are reduced in longitudinal zones (19) of the end part (20) of the preforms, extending over the bottom (18) and over an axial portion of their body (21), distributed over the periphery of the ends of the preforms facing respective cavities (11) of the mold bottom (1).

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

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

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

Abstract: A process for producing a heat- and pressure-resistant polyester bottle, comprising a primary blow-molding step of obtaining a primary molded article by biaxially stretch-blow-molding a preform of a polyester resin, a heat-treating step of obtaining a secondary molded article that is heat-shrunk by heat-treating the primary molded article, and a secondary blow-molding step of obtaining a finally molded article by biaxially stretch-blow-molding the secondary molded article, wherein the primary blow-molding step biaxially stretches the neck portion of the primary molded article to a size nearly the same as the neck portion of the finally molded article, and the heat-treating step does not cause the neck portion of the secondary molded article to be heat-shrunk.

Abstract: An balloon catheter is provided with an improved neck portion. The neck portion of the balloon is used to attach the end of the balloon to a catheter. Before attaching the balloon to the catheter, the neck portion is lengthened and thinned out to make the neck portion more flexible. Heat shrink tubing may be used to apply pressure to the neck portion to force the material of the neck portion to flow along a mandrel inserted into the neck portion.

Abstract: A device and a method used to temper preforms in the manufacture of bottles, in which a tempering device is provided to selectively and directly temper the preforms, and is inserted into preforms. The method provides that the preforms are directly tempered from the inside.

Abstract: A method of forming a balloon to be attached to a medical catheter involves drawing a cylindrical balloon base in its circumferential direction and/or its lengthwise direction, while the inside and/or outside of the balloon base is in contact with a fluid in a supercritical state for the balloon base to be modified.

Abstract: A method and apparatus are provided for strengthening a portion of a blow molded bottle. The method includes directing a jet of cooled air at a preform before it is molded, causing the wall thickness in the cooled area to remain thicker after molding to strengthen that area of the blow molded article. The apparatus includes a blow molding machine that is provided with a nozzle positioned to direct the cooled jet of air towards the preform. The nozzle is mounted in a standby station that is in between the existing heating station and blow molding station. In one embodiment, the cooled jet of air is directed at a location just below the neck of the preform to create a ring of increased thickness in the shoulder of the blow molded bottle, adding strength to the shoulder of the bottle. A conventional blow molding machine may be modified to rotate and cool the preform in the standby station.

Abstract: Heat is extracted from compressed gas used in a blow-molding process by expansion cooling the exhausted gas and/or passing the exhausted gas through a vortex tube, which supplies cold gas at an exit thereof. The cold gas is then routed through cooling channels in the mold. This obviates the need for recirculating or externally chilling a coolant and saves energy.

Abstract: A cooling tube assembly for operating on a malleable molded plastic part. The cooling tube assembly comprising a porous tube/insert having a profiled inner conditioning surface, and a vacuum structure configured to cooperate with the porous tube. In use, the vacuum develops a reduced pressure adjacent the inner conditioning surface to cause an outer surface of the malleable molded plastic part, locatable within the cooling tube assembly, to contact the inner conditioning surface of the porous insert so as to allow a substantial portion of the outer surface of the malleable part, upon cooling, to attain a profile substantially corresponding to the profile of the inner conditioning surface. The cooling tube assembly further including a suction channel therein that is configured to cooperate with a valve member for the control of a suction flow therethrough that assists in a transferring of the molded article into the cooling tube assembly.

Abstract: A method for producing bottle-type containers made of a synthetic resin, e.g., polyethylene-terephthalate resin, includes a heat treatment step for heating and crystallizing a neck portion of a perform corresponding to a neck portion of a container. In a first stage of the heat treatment step, the neck portion of the perform is temporarily heated to a temperature below a melting point of the synthetic resin, e.g., approximately 200° C. to 230° C. in the case of polyethylene terephthalate resin. In a subsequent second stage, the neck portion is maintained at a temperature within a range in which crystallization of the synthetic resin is promoted, e.g. approximately 170° C. to 195° C. in the case of polyethylene terephthalate resin.

Abstract: A process for producing a fiber-reinforced molded article and the resulting article such as a cantilevered battery tray. In the process, thermoplastic material in its solid state having a melt flow index above 25 g/10 minutes is fed into a suitable processing machine simultaneous with the addition of reinforcing fibers having a length of at least 0.375 inch or greater and sized with a material such as polyurethane, polyurea, and isocyanate derivatives thereof. The introduced materials are subjected to orientational agitation such that the reinforcing fibers are filamentized in an essentially homogeneous dispersion throughout the solid polymeric material. Once filamentization and dispersion are achieved, the resulting admixture is subjected to knead melting operations for an interval sufficient to achieve melting of the polymeric material introduced into a suitable plasticizing apparatus where the introduced material can be subjected to suitable knead melting operations.

Abstract: Improve the strength of the stretch blow receptacle and make the heat resistant treatment easier, by making the receptacle wall cross-section multi-layered in view of crystalline density, and the crystalline density of the surface layer high density. The inventions concerns a thin plastic receptacle 2 molded by stretch blowing of a bottomed preform 1 in the longitudinal and transversal directions. The wall cross-section is composed of inside and outside surface layers 2a whose crystalline density is high by stretching, a core layer 2b presenting a lower density than the surface layers 2a, and an intermediate layer 2c presenting a graduated density between both layers 2a, 2b.

Abstract: A housing is mounted to a slide that transports a series of preforms downward under the influence of gravity through a pre-heating apparatus toward a reheat blow molding machine. The housing is coupled to the slide so that a selected portion of each of the series of preforms is shielded from the general enviroment, and heating elements and directing elements are fixed within the housing so that heat from the heating elements is directed toward the selected portion of each series of preforms as the preforms desend down the slide to achieve a persistent thermal gradient in the preforms prior to the re-heating and blow-molding of the preform.

Abstract: Method and apparatus for in-mold handle attachment, wherein a portion of a blow-molded container is formed about a retaining member on a handle during blow molding. After forming the container portion about the retaining member, a cooling medium is directed at the location of the container portion in order to accelerate the cooling rate at the container portion. There is achieved at least one of an improvement in the security of the attachment of the handle to the container, and a reduction in the blow-mold processing time.

Abstract: A panel for an airbag of an automobile is formed by integrally molding a cover body, which is made of a synthetic resin, with a main body, made of another synthetic resin. The panel includes a joint portion, joined with the cover body, and provided around an opening portion formed in the main body. The joint portion constitutes an overlapping portion in which an outer peripheral edge of the cover body is overlapped as being arranged on the inner side of an opening edge of the main body.

Abstract: An automobile interior trim component includes a molded substrate laminated onto a cover sheet including a foam backing and a skin film having a surface texture. The cover sheet is preheated so the skin film is in a melted viscous liquid state above its melting temperature, and the foam backing remains in a solid elastic foam state below its melting temperature. The preheated cover sheet is mechanically pre-molded by a back mold into a front mold. Pressurized air is applied through the back mold, to blow-mold the cover sheet against the front mold, so the melted skin film reproduces a surface texture of the front mold surface while the solid foam backing acts as a buffer and air barrier layer. Vacuum is applied through the front mold surface. The mold is opened, a substrate is introduced, and the back mold then molds and thermally laminates the substrate against the foam backing of the cover sheet.

Abstract: A method for stretch blow molding a wide-mouthed container, employing a preliminary stretching before stretch blowing without making an upper body portion thickened so as to thin the wall thickness from the connecting portion between the mouth portion and the body portion, thereby preventing the thickening phenomenon at the subjected portion. A preform having a large diameter mouth portion, a body portion and a bottom portion is injection molded within an injection mold. The preform is released from the injection mold in a state where the inside thereof is still in a high temperature while holding the mouth portion of the preform with a lip mold. Then, the preform is transferred to a blow mold as it is. Before the stretch blow molding step of the preform, a stretching rod is descended in a predetermined length to preliminary stretch the body portion in some extent.

Abstract: A method of molding a hollow, reinforced molded plastic article. A preform is provided in the shape of the article to be molded. The preform comprises randomly commingled, short lengths of thermoplastic and reinforcing fibers loosely bonded together. A core is provided within the preform and may either be a flexible inflatable core which may be removed later or a thermoplastic liner. The preform is placed in a mold and heated to fuse the thermoplastic while a pressurized liquid coolant is circulated within the core.

Abstract: A required preform 2 is molded by rapidly cooling molten resin which has been injected and filled into an injection mold. The preform 2 is held by its neck portion with a neck mold and is mold-released in a high temperature state. A bottle 1 having a thin body portion 1a is molded by stretch blowing laterally and longitudinally within a blow mold. Among the thickness 2a and length 2b of a stretched portion of the preform 2 which are set according to the volume and weight and body portion thickness 1a of the bottle 1, the thickness 2a is set to be thinner than the usually set thickness. The length 2b is set to be long inversely proportional to the thickness setting. The preform 2 is mold-released at a higher temperature than usual and is stretch-blow molded before its outer surface temperature reaches its peak.

Abstract: This invention relates to the post-extrusion processing of extruded profiles in an economic manner. The first process step involves heating at least a portion of the extruded profile in a preheated profile heating means to a first temperature at which the essentially linear profile becomes formable or pliable or bendable, yet which still has at least some degree of structural integrity at this point which permits it to be physically manipulated without compressing the profile by the application of external pressure or by the weight of gravity itself. This first temperature is less than a subsequent second temperature, at which the profile becomes melt processable effecting radial expansion under pressure or melt fusion under pressure. At least one end of the profile remains unheated, and preferably, two ends remain unheated.

Abstract: A paper composite for realizing packages in three-dimensional form having a layer of yieldable paper with a degree of yieldingness in any direction not less than 10% and impermeablilizing film having a yieldingness compatible with yieldable paper. A method for realizing packages where a leaf of composite is faced to a cavity of at least a mould, the leaf being bounded in correspondence of a continuous edge of the cavity, and subsequently tangentially stretching the leaf of composite to adhere to an inner surface of the cavity to obtain a concave valve. The valve has the shape of the cavity. The package obtained is a concave container having a closure film applied to the filling, and may have two concave valves joined together along the facing edges.

Abstract: An improved blow mold shell, and a blow mold shell assembly, for use in blow molding containers is disclosed. The blow mold shell comprises an elongate unitary blow mold shell body defining a partial molding cavity, the partial molding cavity having a container neck forming portion and a container body forming portion. A first continuous cooling circuit is defined within the shell with respect to the neck forming portion of the molding cavity. A second separate, and independent, continuous cooling circuit is defined within the shell with respect to the body forming portion of the molding cavity. So constructed, the neck and body portions of a blow mold container may be separately cooled, and/or heat-treated, as desired, during the molding process to allow the sidewall portion of the container to be molded in as thin a sidewall section as possible in contrast to the neck portion of the container.

Abstract: There are disclosed:

Abstract: A method of producing parisons of thermoplastic material, which includes the steps of injection of plasticized resin into a plurality of multiple-cavity molds, removal of the parisons from the respective injection molds and transferring parisons to conditioning stations to go through a temperature conditioning phase. The parisons are held in the conditioning stations for a pre-determined length of time, and then the parisons are transferred into appropriate blow molding tools in order to blow the conditioned parisons. Further, during the conditioning phase, the temperature of the surface of the collar of the parison is caused to increase, while the temperature of the parison body is allowed to decrease, so that at the end of the conditioning phase the temperature of the surface of the collar of the parison exceeds by approximately 15 to 20° C. the temperature of the parison body.

Abstract: A blow molding method for molding tube containers by introducing blow air into a parison having been extruded by an extruder is disclosed, which comprises introducing blow air into the parison to shape a tube container and form a discharge outlet in part of the wall of an unnecessary portion of the tube container located lower than the cutting position of the tube container, and further continuing the introduction of blow air. The blow air may be introduced horizontally by piercing the wall of a parison having been extruded from an extruder with a nozzle for introducing blow air or vertically by introducing blow air in the axial direction of the parison. The discharge outlet is formed in part of the side wall or bottom wall of the container below a cutting position preferably as low as possible.

Abstract: A plastic article is formed in an injection mold by injecting molten plastic into the injection mold at an elevated temperature, cooling the plastic from the molten condition to a solid condition, and crystallizing a portion of the plastic by slowing down the cooling of said portion.

Abstract: A method for forming a balloon for a dilatation catheter involving the steps of extruding a segment of thermoplastic material, maintaining the center portion at a temperature below the glass transition of the thermoplastic material, drawing the segment to a predetermined length, wherein after the drawing the wall thickness of the center portion does not appreciably change, and expanding the segment in a mold to produce the balloon.

Abstract: An improved method for injection stretch blowing is provided. In the process, a molten resin is injected into an injection cavity defined by an injection mold, a lip mold and an injection core to form a desired preform, the cooling time for this preform being positively reduced to form a rigid skin layer on the outer surface of the preform without increasing the thickness. It is then released from the injection mold and transferred into the blow mold with a mouth portion being held with the lip mold while the skin layer keeps the configuration of the preform and the interior is in a high temperature state, and is stretch blow molded into a hollow molded article, e.g. a bottle whose major portion is ultra-thin, at the moment when the surface temperature of the preform that rises due to its own interior temperature is significantly higher than a glass transition temperature (Tg) and is expected to reach to a peak temperature.

Abstract: An apparatus for molding a container has a standby section disposed between a heating section and a blow molding section. A preform is supported by carrier members, and is intermittently carried from the heating section via the standby section to the blow molding section. In the standby section are provided a temperature conditioning member which conditions temperature on the preform carried from the heating section; a positioning plate which positions a carrier member stopped at the standby section; and a cylinder which advances and withdraws the temperature conditioning member with respect to the preform, and simultaneously advances and withdraws the positioning plate with respect to the carrier member. The advanced positioning plate contacts with the carrier member to position the carrier member. The advanced temperature conditioning member is set enabling temperature conditioning of the preform.

Abstract: A biaxially stretched blow molded bottle of a synthetic resin having a big foot type petaloid bottom is produced in a blow time of not more than 3 seconds, and after the bottle has been released from the mold, the temperature of the bottom portion of the bottom does not rise higher than 70.degree. C., thereby supplementing the capability of the metal mold for cooling the bottom portion. Thus, irregular deformation of the central part of the bottom portion is prevented, molding of the bottom portion with high pressure resisting and mechanical strength is achieved to avoid breakage, and a sufficient height of the central part of the bottom portion is ensured. Additionally, productivity of pressure resisting bottles is improved by reducing the blow time from 4-5 seconds to not more than 3 seconds.

Abstract: A method for forming a balloon for a dilatation catheter involving the steps of extruding a segment of thermoplastic material, maintaining the center portion at a temperature below the glass transition of the thermoplastic material, drawing the segment to a predetermined length, wherein after the drawing the wall thickness of the center portion does not appreciably change, and expanding the segment in a mold to produce the balloon.

Abstract: A method of manufacturing a container, wherein less material is required to produce the container, the container has a more uniform wall thickness, and malformations around the neck of the container are significantly reduced. The method includes forming plastic into a parison and blowing it into a mold having a tapered neck portion and a body portion, which join to form an annular corner for contacting the parison. A blow pin blows air into the mold and parison, causing the parison to expand and conform to the inner contour of the mold. The taper of the neck portion and the annular corner thereby formed, cool the plastic at that point and more uniformly form the parison into the container, the amount of material wasted and required in manufacturing the container is substantially reduced, as is malformations and warping which usually occur about the neck of the finished container.

Abstract: A blow molding method by horizontal blow molding of piercing the wall of a parison having been extruded by an extruder with a blow nozzle is disclosed, which comprises moving forward the blow nozzle to pierce the parison, introducing blow air at least in the direction toward the bottom, i.e., opposite to the bottle neck and, after shaping of a hollow container by the blow air, forming an opening in the parison at a position in the vicinity of or above the blow nozzle-pierced portion to discharge the blow air having circulated inside the hollow container.