Process for making a container of a given shape from sheet material
AssigneeSoremartec S.A.
InventorsClaudio BONINO, Giovanni BONINO
Life of this patent
Estimating the term…
Abstract
Process for obtaining a container of a given shape starting from sheet material, by providing a sheet; providing a mould having a forming cavity, which defines a reference axis (R) and has a shape corresponding to the given shape of the container; positioning the sheet over forming cavity; providing a forming device having forming structure arranged on a side of the sheet opposite the forming cavity, and operating the structure for inserting the sheet into the forming cavity to deform it until a container blank is obtained having a shape approximating the given shape; and blowing a gas under pressure into the forming cavity to deform the container blank until the container with the given shape is obtained.
Claims10
A process for obtaining a container (100) of a given shape from sheet material, comprising the steps of:
- providing a sheet (110);
- providing a mould (20) having a forming cavity (20A), which defines a reference axis (R) and has a shape corresponding to said given shape of said container (100);
- positioning said sheet (110) over said forming cavity (20A);
- providing a forming device (40) having forming means (41, 42) arranged on the side of said sheet opposite to said forming cavity, and operating said forming means for inserting said sheet (110) into said forming cavity (20A) to deform it until a container blank is obtained (101) having a shape approximating said given shape;
- and
- blowing a gas under pressure into said forming cavity (20A) to deform said container blank (101) until said container (100) with said given shape is obtained;
- said process being characterized in that said step of inserting said sheet (110) into said forming cavity includes:
- setting in contact with said sheet a first operating surface (S1) of a forming member (41, 42) and pushing through said first operating surface (S1) said sheet (110) into said forming cavity (20A), for a first stretch (H1) along said reference axis (R);
- and
- further pushing said sheet (110) into said forming cavity (20A) by way of a second operating surface (S2) of a forming member (41, 42), which is of smaller size than said first surface (S1), for a second stretch (H2) along said reference axis (R).
Dependencies are inferred from the claim text.