Patent ID: 7111441
Filing Date: 2006-09-26
Classification: B31B,B65B,Y10S

Abstract:
1. A method of producing a rigid container for a product, the container ( 2 ) comprising two end walls ( 5 , 6 ) and a lateral wall ( 7 ), and being formed from a flat blank ( 3 ) comprising two first portions ( 16 , 24 ; 17 , 24 ), each of which comprises a respective panel ( 16 ; 17 ) defining a respective said end wall ( 5 ; 6 ) of the container ( 2 ), and a drawn rim ( 24 ) integral with the panel ( 16 ; 17 ), extending along at least one portion ( 22 ) of an outer edge of the panel ( 16 ; 17 ), and square with respect to the panel ( 16 ; 17 ); and three second portions ( 12 , 13 , 14 ) alternating with said two panels ( 16 , 17 ), one ( 13 ) of said second portions ( 12 , 13 , 14 ) being an intermediate second portion with respect to said two panels ( 16 , 17 ); the method comprising the steps of folding each said panel ( 16 ; 17 ) squarely with respect to the second portions ( 12 , 13 ; 13 , 14 ) adjacent to it, and wrapping said second portions ( 12 , 13 , 14 ) about and onto said rims ( 24 ) to form said lateral wall ( 7 ); and being characterized by comprising the further step of stiffening each said panel ( 16 ; 17 ) at least during said step of wrapping to form said lateral wall ( 7 ).