Method of manufacturing parallelepipedic packing container provided with an opening arrangement
Patent 4464156 Issued on August 7, 1984. Estimated Expiration Date: 
February 24, 2002. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
February 24, 2002. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 2294220 2385897 3232514 3492775 Packing containers with ripping thread opening and packing material webs for the manufacture of the packing containers Packaging container with a pouring spout Package and automatic method of forming same Patent #: 4353196 InventorAssigneeApplicationNo. 06/351868 filed on 02/24/1982US Classes:493/194, And cutting, breaking, tearing, or abrading493/239, Severing of container or container blank from web493/930, Having tear strip493/934, Parallelepiped or tetrahedron shape53/451Vertically formed, filled, and sealed tubular packageExaminersPrimary: Coan, James F.Attorney, Agent or FirmInternational ClassesB65D 5/06 (20060101)B65D 5/02 (20060101) Foreign Application Priority Data1979-01-15 SEAbstractA parallelepipedic packing container of the type which is provided with a sealing fin which extends over the upper end wall of the packing container as well as over triangular, double-walled lugs adjoining this end wall. The sealing fin comprises a narrow sealing zone on the outer edge of the fin and a tearing perforation on the base line of the fin, the tearing perforation extending from the tip of one triangular lug to a point on the end wall of the packing container. The sealing fin is unsealed in the area between the narrow sealing zone and the tearing perforation, and moreover a corresponding sealing fin arranged at the base of the packing container is appreciably narrower than the sealing fin wherein the tearing perforation is arranged.Field of SearchVertically formed, filled, and sealed tubular package | |
