Can for preserving foodstuffs and process for its manufacture
AssigneeSwiss Aluminium Ltd.
InventorJean Schrade
Life of this patent
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Abstract
This invention relates to a can for preserving foodstuffs and a process for its manufacture. The can which can be closed and sealed by means of conventional machines and sealing methods comprises a basically cylindrical can body of an aluminum-plastic composite which is joined permanently at one end directly to a can bottom and at the other end to a metal lid via a metal ring which is flanged to the said lid. The process of the invention comprises the combination of the following steps: (a) Affixing the bottom to the body made of an aluminum-plastic composite. (b) Affixing the metal ring to one end of the body by means of an adhesive and applying pressure and elevated temperature to produce welding or sealing. (c) Flanging a metal lid onto the metal ring affixed to the can.
Claims20
A can particularly suitable for preserving foodstuffs comprising a body which is basically cylindrical in shape and top and bottom parts fixed to the said can body, wherein the can body is made of an aluminum-plastic composite and is permanently affixed at one end directly to said bottom part and at the other end of said top part via a metal ring which is adhesively secured to said can body and flanged only to said top part.
A process for manufacturing a can having a cylindrical body part and top and bottom parts affixed thereto in which the combination of the following steps is employed:
- (a) providing said body made out of an aluminum-plastic composite;
- (b) affixing a metal ring to one end of the body only by means of an adhesive and the application of pressure and elevated temperature to produce welding or sealing;
- and
- (c) securing said metal ring to said top part by flanging.
Dependencies are inferred from the claim text.