Plastic container, method for manufacture thereof and ring for a container
AssigneeDispack-Projects NV
InventorAlbert Marie Wauters
Life of this patent
Estimating the term…
Abstract
Plastic container, particularly for storing liquid under pressure, comprising an integrally formed body with a bottom, an upright substantially cylindrical side wall and an upper side with a neck having a bottom end and an open top end in which a closing element of the container can be mounted, wherein the upper side of the container, around the neck, is formed with at least one shoulder and at least one valley which runs downward in radial direction from the neck in the direction of the upright side wall; wherein each shoulder protrudes upward relative to the at least one valley; which at least one shoulder and at least one valley are formed integrally with the body of the container.
Claims17
A plastic container comprising an integrally formed body with
- a bottom;
- an upright substantially cylindrical side wall;
- and
- an upper side with a neck having a bottom end and an open top end in which a closing element of the container can be mounted;
- said neck having an inner diameter which is substantially constant;
- wherein the upper side of the container, around the neck, is formed with at least one shoulder and at least one valley which runs downward in radial direction from the neck in the direction of the upright side wall;
- wherein each shoulder protrudes upward relative to the at least one valley;
- which at least one shoulder and at least one valley are formed integrally with the body of the container;
- wherein said at least one shoulder has a top which is situated at the same height or higher than the bottom end of the neck.
A method for manufacturing a container by stretch blow moulding of a thermoplastic material, comprising the steps of:
- providing a preform with a neck part, said preform being made of a thermoplastic material;
- fixing said preform around said neck part;
- forming a container body by stretching and blowing the preform below the neck part, wherein the container body is formed around the neck part with at least one shoulder with a top which is situated at the same height or higher than the bottom end of the neck part.
Dependencies are inferred from the claim text.