Patent ID: 6151871
Filing Date: 2000-11-28
Classification: B65B

Abstract:
A machine for packaging products (11) with film (12) made of heat shrinkable material, comprising a body (13, 113) and a cover (16, 116) hinged to said body to define a shrinkage chamber between them, said chamber housing, wrapped in film (12), a product (11) to be packaged and being provided with a supporting element (15, 115) for the film-wrapped product (11), said body and said cover defining, restectively, a lower portion (14, 114) and an upper portion (17, 117) of the shrinkage chamber, at least an air passage (23, 123) being provided between said upper and lower portions of the shrinkage chamber, the packaging machine further comprising a heating unit (22, 122) and a ventilating unit (26, 27, 126, 127) arranged in said shrinkage chamber to create hot air circulation (29, 30, 31) surrounding the product (11) to be packaged, with air paths (31) connecting the upper portion (17, 117) to the lower portion (14, 114) of the shrinkage chamber along said air passage (23, 123) the ventilating unit (26, 27, 126, 127) being disposed in the upper portion (17, 117) of the shrinkage chamber and above the heating unit (22,122), and the heating unit being disposed between the ventilating unit (26, 27, 126, 127) and the bottom of the shrinkage chamber and within a rear heating chamber (23, 123) forming said air passage (23, 123), the rear heating chamber (23, 123) being separated from the supporting element (15, 115) and the product to be packaged by means of a wall (24, 124).