US 12,378,024 B2
Apparatus and method for forming a hermetic package for creamy products
Giuseppe Bortolazzi, Ozzano Dell'Emilia (IT)
Assigned to I.M.A. Industria Macchine Automatiche S.p.A., Ozzano Dell'Emilia (IT)
Appl. No. 17/790,005
Filed by I.M.A. INDUSTRIA MACCHINE AUTOMATICHE S.p.A., Ozzano Dell'Emilia (IT)
PCT Filed Feb. 9, 2021, PCT No. PCT/IB2021/051020
§ 371(c)(1), (2) Date Jun. 29, 2022,
PCT Pub. No. WO2021/161156, PCT Pub. Date Aug. 19, 2021.
Claims priority of application No. 102020000002494 (IT), filed on Feb. 10, 2020.
Prior Publication US 2023/0045208 A1, Feb. 9, 2023
Int. Cl. B65B 7/28 (2006.01); B65B 3/02 (2006.01); B65B 25/06 (2006.01); B65B 25/10 (2006.01); B65D 85/76 (2006.01)
CPC B65B 25/068 (2013.01) [B65B 3/02 (2013.01); B65B 7/28 (2013.01); B65B 25/10 (2013.01); B65D 85/76 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A method for forming a package for creamy products comprising the following steps:
forming a tray starting from a first piece of wrapping material by folding the first piece to form a base and a continuous perimeter edge extending substantially perpendicular to the base;
dosing a predetermined quantity of creamy product inside the tray formed;
forming a lid for closing a top opening of the tray starting from a second piece of wrapping material by folding the second piece to define a covering surface and a raised perimeter edge which extends substantially perpendicular from the covering surface;
inserting the lid into the tray placing the covering surface in contact with the creamy product positioned in the tray and the raised perimeter edge of the lid facing the perimeter edge of the tray;
sealing by sealing the lid to the tray;
wherein the sealing step comprises the following sub-steps:
partially sealing the perimeter edges facing each other of the tray and of the lid to define at least a first perimeter zone of the perimeter edges sealed to each other and at least a second perimeter zone of the perimeter edges not sealed and communicating with the creamy product contained in the tray; after the partially sealing steps:
folding the facing perimeter edges of the tray and the lid on the covering surface of the lid; and lastly
pressing the creamy product contained in the partly sealed tray for expelling any air present in the tray; and
finally sealing the perimeter edges folded on the covering surface of the lid to obtain a complete sealing of the package obtained.