Packing container provided with tear-up opening arrangement
Patent 4410128 Issued on October 18, 1983. Estimated Expiration Date: 
January 16, 2001. 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.
January 16, 2001. 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 3178091 Paperboard cartons with liquid-proof liners Polymer film having linear tear properties Packaging container with a pouring spout Patent #: 4248351 InventorAssigneeApplicationNo. 06/225602 filed on 01/16/1981US Classes:229/216, Pour spout formed by tearing a sealing fin229/206Including a coating or lamination (e.g., adhesive tape) covering a line of weaknessExaminersPrimary: Price, WilliamAssistant: Elkins, Gary E. Attorney, Agent or FirmInternational ClassesB65D 5/06 (20060101)B65D 5/02 (20060101) Foreign Application Priority Data1980-01-21 SEAbstractA tear-up opening arrangement for a packing container which is manufactured from a plane packing material web by folding is disclosed. The packing material is pierced through along a cut line which is situated alongside or in the vicinity of a base line of a sealing fin projecting from the packing container. The cut line is covered along the inside of the packing container by a thin, molecular-oriented plastic strip whose direction of orientation coincides with the extension of the cut line. The cut line has two end portions extending on either side of the apex of a triangular lug of the container and a center portion extending parallel to, but at a distance from, a line through the apex and the end portions. | |
