Abstract: Plastic aerosol container having a thermally crystallized neck finish configured to receive an aerosol valve assembly and an expanded strain oriented aerosol container body integral with the neck finish. A junction between the thermally crystallized neck finish and the strain oriented container body defines a pull point at which strain orientation begins.

Abstract: A plastic aerosol container includes a main body portion that is constructed and arranged to withstand aerosol pressurization within a range that is about 50-300 psig. The plastic aerosol container also includes a finish portion that is unitary with the main body portion. The finish portion may be threaded or unthreaded. The finish portion has a side wall, an upper sealing surface, at least one helical thread and a support ledge beneath the helical thread. Reinforcement structure is positioned beneath the support ledge for reinforcing the finish portion against deformation due to the pressurization. A method of stabilizing a plastic aerosol container is also disclosed.

Abstract: An aerosol container includes a main body portion that is constructed and arranged to withstand aerosol pressurization within a range that is about 90-180 psig and a threaded finish portion that is unitary with the main body portion. The threaded finish portion has at least one helical thread, a support ledge beneath the helical thread and a secondary flange that is positioned beneath the support ledge. The secondary flange has an outer circumference that is noncircular in at least one location, whereby it may be engaged during a capping operation to prevent rotation of the container during capping. A method of making an aerosol container in which a preform is capped before the blow molding process is also disclosed.

Abstract: Molded preform for blow molding a plastic container for pressurized applications, the preform having a base with a multilayer wall for forming a delamination and crack resistant multilayer footed container base. The preform base forming region has an end cap portion with a non-spherical inner wall, including a flattened central section joined by arcuate corner sections to a generally cylindrical outer section. The inner wall sections provide a varying end cap thickness profile which enhances orientation in select portions of the footed container base for improved performance and/or lightweighting of the container base.

Abstract: A plastic aerosol container includes a plastic base portion and a plastic main body portion that is unitary with the plastic base portion and defines a longitudinal axis. The base portion and the main body portion together define an internal space within the container that is pressurized with an aerosol mixture at a pressure that is substantially within a range of about 50 psi to about 300 psi at room temperature. The main body portion has an upper portion that has a first maximum transverse diameter, a lower portion that has a second maximum transverse diameter and an intermediate portion that has a third maximum transverse diameter. The third minimum transverse diameter is less than both the first and second maximum transverse diameters, whereby the main body portion has a narrowed waist portion that provides reinforcement against deformation as a result of pressurization within the internal space of the container. The narrowed waist portion preferably has a substantially constant radius of curvature.

Abstract: A plastic aerosol container includes a main body portion and a base portion, both of which are fabricated from a plastic material such as polyethylene terephthalate. The main body portion has a longitudinal axis and a maximum transverse diameter. The base portion is unitary with the main body portion and has a plurality of feet that are adapted to support the container on a horizontal surface. A first rib that is positioned between adjacent feet preferably has a substantially constant radius of curvature that has a ratio with respect to the maximum transverse diameter that is substantially within a range of about 0.20 to about 1.0. The main body portion and the base portion define an interior space that is pressurized with an aerosol mixture at a pressure that is substantially within a range of about 50 psi to about 300 psi.

Abstract: A plastic container includes a generally cylindrical main body portion having a longitudinal axis. At least one gripping recess is defined in the main body portion that has an oblong shape when viewed in front elevation and that is defined in part by a curved concave inner surface when viewed in side elevation. The gripping recess includes a plurality of horizontal indentations, each of which is sized to receive a finger of a consumer when the plastic container is being gripped by the consumer.

Abstract: A neck finish of a preform or container having a crystallized top sealing surface (TSS) for withstanding deformation from multiple use cycles. In a returnable and fillable container, the improved TSS has enhanced caustic stress crack resistance resulting in a more secure finish-closure seal and an extended container life (number of refill cycles).

Abstract: Molded preform for blow molding a plastic container for pressurized applications, the preform having a base with a multilayer wall for forming a delamination and crack resistant multilayer footed container base. The preform base forming region has an end cap portion with a non-spherical inner wall, including a flattened central section joined by arcuate corner sections to a generally cylindrical outer section. The inner wall sections provide a varying end cap thickness profile which enhances orientation in select portions of the footed container base for improved performance and/or lightweighting of the container base.