US 12,145,762 B2
Capsule-sealing system with improved sealing head
Jacopo Cassoli, Casalecchio di Reno (IT); Nicola Giuliani, Valsamoggia (IT); and Federico Catozzi, Ferrara (IT)
Assigned to ECOCAP'S S.r.l., Casalecchio di Reno (IT)
Filed by ECOCAP'S S.r.l., Casalecchio di Reno (IT)
Filed on Dec. 13, 2021, as Appl. No. 17/643,981.
Claims priority of application No. 102020000030905 (IT), filed on Dec. 15, 2020.
Prior Publication US 2022/0185513 A1, Jun. 16, 2022
Int. Cl. B65B 7/28 (2006.01)
CPC B65B 7/2878 (2013.01) [B65B 7/2807 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A sealing head of a capsule-sealing machine for applying a covering capsule on a top surface of a can to be encapsulated, the can comprising an edge and an opening covered by a tab for dispensing the contents of the can, the sealing head comprising:
first and second circular sealing sectors being radially positioned around an axis of vertical motion of the sealing head, at least one of the first and second circular sealing sectors being provided with a conformed lower edge, the conformed lower edge being operative to interpose between the covering capsule and a can edge proximal area as they approach together during the operation of the capsule-sealing machine;
first and second elastic means being coupled with said corresponding first and second sealing circular sectors for counteracting axial movement of the said circular sealing sectors as the covering capsule and the can edge proximal area approach together during operation of the capsule-sealing machine;
heating means being connected to said first and second circular sealing sectors, the heating means being operative to heat the first and second circular sealing sectors to a given sealing temperature;
wherein the sealing head is configured such that during the operation of the capsule-sealing machine, the first sealing circular sectors and the first elastic means are configured to apply a higher pressure on a first circumferential arc zone of the can, and the second sealing circular sectors with the second elastic means are configured to apply a lower pressure on a second circumferential arc zone of the can to achieve a differential adhesion between the covering capsule and the first and second circumferential arc zones on the first and second circumferential arc zones such that the capsule is separable from the second circumferential arc zone to open the can while remaining adherent to the first circumferential arc zone.