B29C2049/7879

METHOD FOR AUTOMATIC ADJUSTMENT OF THE TRAVEL OF A STRETCHING ROD OF A DEVICE FOR FORMING HOLLOW BODIES
20180264706 · 2018-09-20 ·

Disclosed is a method for adjusting the travel of a stretching sliding rod that belongs to a device for forming hollow bodies made of thermoplastic material by stretch blow molding, with the stretching rod being controlled cyclically in terms of sliding from a rest position to an adjustable stretching end position by stretching the malleable wall of a hollow body, before returning to its rest position to begin a subsequent stretching cycle of another hollow body, with the method including a control step that consists in detecting whether an axial force that opposes the sliding of the stretching rod at the end of travel is above a determined upper boundary. The stretching end position is adjusted automatically by being subjected to the axial force that is detected during the control step.

SYNTHETIC RESIN CONTAINER AND METHOD FOR MANUFACTURING THE SAME

A synthetic resin container that is formed in a bottle shape having a mouth and a trunk and that is provided in the trunk with at least one reduced pressure absorbing panel. The trunk has a density of 1.3695 g/cm.sup.3 or more, and a ratio of a crystal orientation in a transverse direction with respect to a total value of a crystal orientation in a machine direction and the crystal orientation in the transverse direction in the trunk is less than 44%.

Lightweight plastic container and preform

A plastic container is provided that includes a lower supporting base portion; a sidewall portion extending upwardly from the base portion; a neck portion extending upwardly from the sidewall portion; and a closure. The neck portion includes a support flange having an upper and lower surface, threads, a tamper-evident formation, and a dispensing opening at the top of the neck portion. In an embodiment, the weight of the neck portion is 3.0 grams or less; and the vertical distance from the top of the dispensing opening to the lower surface of the support flange, including the threads and the tamper-evident formation, is 0.580 inches or less. A preform and method for making a container are also disclosed.

Two stage system and method for molding containers

A method and system for hydraulic blow molding a container from a preform 24. A molding medium is injected into the preform from a nozzle 12 during a first molding stage. In the first molding stage, the molding medium is injected so as to be specifically directed at a closed end of the preform 24. During the first molding stage, the preform is axially stretched in response to the force exerted on the preform by the molding medium. The molding medium is also injected into the preform during a second molding stage, where the molding medium is injected at a flow rate greater than a flow rate during the first molding stage. During the second molding stage, the preform is radially expanded into the shape of the container.

Liquid jet diameter control
09987789 · 2018-06-05 · ·

A system and method for hydraulic blow molding a plastic preform into a container. The system includes a nozzle having a nozzle body with a main bore extending therethrough and an outlet for ejecting molding medium into a preform positioned within a mold. A minimum internal diameter is defined within the body of the preform, which is bound on opposing ends between an open end and a closed end. To form the container, a liquid stream is injected into the preform. The liquid stream is defined by the outlet so as to have an external diameter that is less than the minimum inner diameter of the preform, allowing the stream to impinge upon the close end of the preform without impinging upon a transition of the preform, where the minimum inner diameter of the preform is reduced from the diameter of the finish.

Balloon catheter shaft having high strength and flexibility

Method of making a balloon catheter includes melt-extruding a thermoplastic polymeric material into a tube, cooling the extruded tube, placing the extruded tube within a capture member and biaxially orienting the polymeric material of the extruded tube while simultaneously tapering at least a section of the extruded tube by radially expanding the extruded tube with pressurized media in the tube lumen and axially expanding the extruded tube with an external load applied on at least one end of the tube as an external heat supply traverses longitudinally from a first end to a second end of the extruded tube in the capture member, wherein an overall axial load on the tubing is varied as at least a section of the tube is heated. The method includes cooling the expanded tube to form a tapered biaxially oriented nonporous thermoplastic polymer tubular member and sealingly securing a balloon proximate a distal end of the tubular member.

Blow moulding machine with controlled movement of the stretch rod and blow moulding nozzle

An apparatus (1) for the shaping of plastics material pre-forms (10) into plastics material containers (20) with a movable carrier (2) on which is arranged at least one shaping station (4), wherein the shaping station has a blow molding device (6), and wherein the shaping station additionally has a stressing device (12) which acts upon the plastics material pre-forms with a flowable medium for their expansion, wherein the shaping station additionally has a rod-like body (14) which is capable of being inserted into the plastics material pre-forms in order to stretch them in the longitudinal direction (L) thereof, wherein the shaping station has a drive device (24) which moves the rod-like body (14) with respect to the plastics material pre-form. According to the invention a coupling device (30) is provided which couples a movement of the rod-like body (14) with respect to the plastics material pre-form to a movement of the stressing device (12) with respect to the plastics material pre-form (10)in particular in a mechanical mannerat least for a time, and the apparatus has an influencing device (40) which influences a supply movement of the stressing device (12) towards the plastics material pre-form at least locally.

Lightweight plastic container and preform

A plastic preform is provided that includes a closed bottom portion; a lower portion extending upwardly from the bottom portion; and a neck portion extending upwardly from the lower portion. The neck portion includes a support flange having an upper and lower surface, threads, a tamper-evident formation, and a dispensing opening at the top of the neck portion. In an embodiment, the weight of the neck portion is 3.0 grams or less; and the vertical distance from the top of the dispensing opening to the lower surface of the support flange, including the threads and the tamper-evident formation, is 0.580 inches or less. A container and method for making a container are also disclosed.

Device for packaging a liquid food product
09751646 · 2017-09-05 · ·

The invention relates to a device for delivering a beverage into a thermoplastic container formed from a heated preform, the preform being approximately cylindrical and positioned in a mold, characterized in that it includes injection unit for injecting at least one beverage into a recess in the preform so as to promote expansion of the preform inside the mold, the mold defining the shape of the container, the injection unit comprising an injection head designed to inject at least one beverage through a mouth of the recess, the injection head being integrated into the mold.

Lightweight plastic container and preform

A plastic container is provided that includes a lower supporting base portion; a sidewall portion extending upwardly from the base portion; a neck portion extending upwardly from the sidewall portion; and a closure. The neck portion includes a support flange having an upper and lower surface, threads, a tamper-evident formation, and a dispensing opening at the top of the neck portion. In an embodiment, the weight of the neck portion is 3.0 grams or less; and the vertical distance from the top of the dispensing opening to the lower surface of the support flange, including the threads and the tamper-evident formation, is 0.580 inches or less. A preform and method for making a container are also disclosed.