Preform provided with a concave body portion
AssigneeSidel Participations
InventorsMichel Boukobza, Mickaël Letestu
Life of this patent
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Abstract
Disclosed is a container perform made from plastic material, including: a body; an open neck that extends from the body from which it is separated by a radially projecting flange; a bottom that closes the body opposite the neck; the body having a concave portion in axial cross section, where: B≤0.9·A 0.5.C≤C′≤0.95.C in which A is the overall diameter of the body, measured below the flange; B is the outer diameter of the bottom, measured at the junction of same with the body; C is the cumulative height of the body and the bottom, measured from the flange; C′ is the height, measured axially, of the concave portion of the body, and the concave portion has, in axial cross-section, on an outer surface, an outer radius of curvature RE such that: 1.5.0≤RE≤10.C
Claims19
Container preform (1) made of plastic material, which comprises:
- a symmetrical body (3) of revolution around a central axis (X);
- an open neck (5) that extends in continuation of the body (3) from which it is separated by a radial protruding flange (6);
- a bottom (7) that closes the body (3) opposite the neck (5);
- wherein the body (3) has a portion (11) that is concave in axial section and wherein:
- B≤0.9·A
- 0.5·C≤C′≤0.95·C
- where:
- A is the overall diameter of the body (3), measured under the flange (6);
- B is the outer diameter of the bottom (7), measured at its junction with the body (3);
- C is the cumulative height of the body (3) and the bottom (7), measured from the flange (6);
- C′ is the height, measured axially, of the concave portion (11) of the body (3), And
- wherein the concave portion (11) has, in axial section, on an outside surface (10), an outside radius of curvature RE such that:
- 1.5·C≤RE≤10·C.
Dependencies are inferred from the claim text.