Method and machine for wrapping a product in a sheet of heat-seal wrapping material
AssigneeG. D. Societa per Azioni
InventorsFiorenzo Draghetti, Luca Federici
Life of this patent
Estimating the term…
Abstract
A method and machine for wrapping a product in a sheet of heat-seal wrapping material, whereby the product is wrapped in the sheet of wrapping material to form a product having an outer wrapping in turn having three distinct overlap portions, i.e. portions having at least two superimposed layers of the sheet of wrapping material; and the outer wrapping is stabilized, as the product is conveyed continuously inside a respective same pocket, by a seal formed at each of the three overlap portions.
Claims13
A method of wrapping a product in a sheet of heat-seal wrapping material, the method comprising the steps of wrapping the product (2) in said sheet of wrapping material (3) to form a tubular wrapping (13) comprising a longitudinal first overlap portion (13a), defined by superimposed portions of said sheet of wrapping material (13), and two projecting tubular end portions (14);
- folding each of said tubular end portions (14) onto the product (2) to form an outer wrapping (36) having said longitudinal first overlap portion and two further end overlap portions (36a);
- and feeding said product (2) along a sealing path (P1), along which, said three overlap portions (13a, 36a) are stabilized by three sealing operations;
- wherein said product (2) is fed along said sealing path (P1) by a respective pocket (37), which is fed continuously along the sealing path (P1) and on which said three overlap portions are sealed by said three sealing operations.
A machine for wrapping a product in a sheet of heat-seal wrapping material, the machine comprising first wrapping means (5) for wrapping the product (2) in said sheet of wrapping material (3) and forming a tubular wrapping (13) comprising a longitudinal first overlap portion (13a), defined by superimposed portions of the sheet of wrapping material (3), and two projecting tubular end portions (14);
- second wrapping means (34) for folding each said tubular end portion (14) to form an outer wrapping (36) having two further end overlap portions (36a);
- sealing means (60, 70) located along a sealing path (P1), and each for performing a respective sealing operation on a respective said overlap portion (36a, 13a);
- and conveying means (38) for feeding said product (2) along said sealing path (P1);
- wherein said conveying means (38) comprises a single conveying pocket (37) for said product (2);
- first actuating means (40) for feeding said pocket (37) continuously along said sealing path (P1), said sealing means being positioned at said sealing path to seal said first overlap portion and said two end overlap portions as said product advances on said sealing path.
Dependencies are inferred from the claim text.