A container made of thermoplastic material having a body in which at least one side panel is hollowed out, the container including a central zone having, in a longitudinal plane, a concave profile, and an adjoining zone longitudinally extending the central zone and having, in a longitudinal plane, a
A container made of thermoplastic material having a body in which at least one side panel is hollowed out, the container including a central zone having, in a longitudinal plane, a concave profile, and an adjoining zone longitudinally extending the central zone and having, in a longitudinal plane, a convex profile. The central zone and the adjoining zone are stiffened, and the junction between the central zone and the adjoining zone defines a deformable membrane.
대표청구항▼
1. Container made of thermoplastic material comprising a body having a bottom and one hollowed-out side panel, the side panel comprising: a stiffened central zone provided with a stiffener protruding from the bottom of the central zone and extending longitudinally, the stiffener having a central rib
1. Container made of thermoplastic material comprising a body having a bottom and one hollowed-out side panel, the side panel comprising: a stiffened central zone provided with a stiffener protruding from the bottom of the central zone and extending longitudinally, the stiffener having a central rib and two lateral ribs, the stiffened central zone having, in a longitudinal plane, a concave profile, a radius of the curvature of the central zone, in a longitudinal plane, being measured at an outside of the container; anda stiffened adjoining zone having, in a longitudinal plane, a convex profile, a radius of curvature of the stiffened adjoining zone, in a longitudinal plane, being measured toward an interior of the container, the stiffened adjoining zone being provided with longitudinal grooves having a V-shaped profile with a rounded bottom, whereinat the junction between the stiffened central zone and the stiffened adjoining zone, the side panel locally defines a deformable membrane,the deformable membrane being convex with pressure in the container and concave while depression exists in the container. 2. Container according to claim 1, wherein, in the absence of stress, the deformable membrane is substantially flat in a transverse plane, perpendicular to a principal axis of the container. 3. Container according to claim 1, wherein the adjoining zone has a convex profile in a transverse plane, perpendicular to a principal axis of the container. 4. Container according to claim 1, wherein the side panel is preferably delimited by sharp edges. 5. Container according to claim 1, wherein the adjoining zone is stiffened by means of longitudinal grooves framing the adjoining zone. 6. Container according to claim 5, wherein each groove is connected to an intermediate face of the body by a fillet the radius of which is preferably less than that of a fillet connecting the groove to the adjoining zone. 7. Container according to claim 1, wherein the stiffened central zone is wider at the stiffened adjoining zone. 8. Container according to claim 1, wherein the body comprises a plurality of side panels separated by intermediate faces provided with reinforcing means, wherein the reinforcing means are longitudinal ribs. 9. Container according to claim 1, wherein the side panel comprises a stiffened central zone extended longitudinally by two stiffened adjoining zones, two deformable membranes being formed at the junction between the stiffened central zone and each stiffened adjoining zone. 10. A container, comprising: a body having at least a bottom and one hollowed-out side panel,wherein the side panel includes:a stiffened first zone, provided with a stiffener protruding from the bottom of the first zone and extending longitudinally, the stiffener having a central rib and two lateral ribs, wherein the stiffened first zone is concave in a longitudinal direction, a radius of the curvature of the stiffened first zone, in a longitudinal plane, being measured at an outside of the container;a stiffened second zone, wherein the stiffened second zone is convex in a longitudinal direction, the radius of the curvature of the stiffened second zone, in a longitudinal plane, being measured toward the interior of the container, the stiffened second zone being provided with longitudinal grooves having a V-shaped profile with a rounded bottom; anda deformable membrane, wherein the deformable membrane forms a junction between the stiffened first zone and the stiffened second zone, the deformable membrane being convex with pressure in the container and concave while depression exists in the container. 11. The container according to claim 10, wherein the deformable membrane is substantially flat in the absence of stress and structured to adopt a curvature when under stress from temperature or hydrostatic pressure in the container. 12. The container according to claim 11, wherein the curvature defines an outward bulge. 13. The container according to claim 10, wherein the deformable membrane is structured to deform when under stress from temperature or hydrostatic pressure in the container, while the first stiffened zone and the second stiffened zone remain stiff relative to the deformable membrane. 14. The container according to claim 10, wherein the deformable membrane is positioned between the first stiffened zone and the second stiffened zone in a vertical direction of the container.
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이 특허에 인용된 특허 (19)
Hirata Shunsaku (Yokohama JPX) Nohara Shigezo (Yokohama JPX) Hirata Sadao (Kamakura JPX), Biaxially drawn polyester vessel having resistance to heat distortion and gas barrier properties and process for prepara.
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