Thermoplastic container whereof the base comprises a cross-shaped impression
AssigneeSidel
InventorMichel Boukobza
Life of this patent
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Abstract
A thermoplastic container obtained by blow-molding of a preform, with a base including in its central part a multiple-branch cross-shaped impression provided with a central recess from which radial branches radiate; the base is of the petal-shaped type with at least three legs formed by protuberances located near the periphery; there are as many legs as branches mutually aligned radially; each leg includes a notch for absorbing stresses radially separated from the end of the respective branch.
Claims6
A thermoplastic container obtained by blow-molding or stretch-blow-molding of a preform, this container comprising a side wall and a bottom connected to this side wall, said bottom comprising, in its central region, an impression in the shape of a multi-branch cross impressed into the outer face of the bottom, this cross-shaped impression having a roughly circular central cup around which uniformly-spaced radially-extending branches radiate,
- wherein said bottom is of the petaloid type, with the bottom having a shape generally outwardly convex with at least three feet situated toward the periphery of the bottom and formed by uniformly angularly-spaced protrusions separated from one another by a convex wall portion of the bottom,
- wherein there are equal numbers of feet and branches of the cross-shaped impression,
- wherein the branches of the cross-shaped impression are arranged to correspond with the feet and aligned radially with respect to the feet,
- wherein each foot has a stress-absorbing notch in its bearing part, and
- wherein, in each foot, the stress-absorbing notch remains radially separate from the end of the corresponding branch of the cross-shaped impression.
Dependencies are inferred from the claim text.