Method for manufacturing a package for packaging food products and apparatus for executing the method

A method for manufacturing a package for packaging food products composed of an outer sheet made of heat-sealable material and of an inner sheet which has a smooth face in contact with said outer sheet and an undulated face, said sheets being cut from two respective outer and inner films unwound from reels, said outer film being wider than said inner film transversely to the unwinding direction, said method comprising the steps of:

• coupling said inner film to said outer film so as to form two lateral borders of said outer film left exposed by said inner film;
• unwinding a length of said films from said reels;
• making one film slide with respect to the other, parallel to said lateral borders, up to a staggered position, in which said inner film leaves exposed an end portion of said outer film which has a preset height and is perpendicular to said lateral borders;
• cropping both films in said staggered position, so as to form said outer and inner sheets having two borders which are superimposed and two borders in which the inner sheet border leaves exposed said end portion of said outer film;
• moving one sheet with respect to the other by an extent which is smaller than the height of said end portion, so as to form a package in which the inner sheet is centered on the outer sheet, so as to form two transverse borders which are not as high as said end portion.