Patent ID: 7124554

Claim:
A method of producing a package with a coupon; the method comprising the steps of: feeding a product ( 2 ) along a path (P) to a packing station (S 1 ) via a feed station (S 2 ) with a top wall ( 6 ) of the product positioned horizontally; applying the coupon ( 5 ) on the top wall ( 6 ) of the product ( 2 ) at the feed station (S 2 ); subjecting the coupon ( 5 ) to an electric field between the feed station (S 2 ) and the packing station (S 1 ), so that the coupon ( 5 ) is charged electrostatically and adheres electrostatically to the product ( 2 ) along the path (P); and wrapping a sheet ( 4 ) of packing material about the product ( 2 ), to enclose both the product ( 2 ) and the coupon ( 5 ), at the packing station (S 1 ); the method is characterized in that the electric field is generated by at least one fixed first guide ( 31 ), which is parallel to the path (P) so as to-face the top wall ( 6 ) of the product ( 2 ), and comprises a number of first conducting bodies ( 33 ) having a high direct voltage with respect to an electric earth ( 36 ).