Having Means To Facilitate Opening The Box By Severing (e.g., Tearing, Cutting, Piercing, Etc.) Box Material Or Outer Wrapper Patents (Class 229/200)
Box includes a curved sidewall (e.g., cylindrical, conical, etc.) (Class 229/201)
Box includes flexible outer wrapper (Class 229/203)
Combined with, or modified for opening by, a sharp-edged cutting implement or a piercing implement (Class 229/204)
Tearing facilitated by specified fiber or molecular orientation (Class 229/205)
Including a coating or lamination (e.g., adhesive tape) covering a line of weakness (Class 229/206)
Tearing means includes offset score lines in opposite faces of a layer of box material (Class 229/207)
Surface portion of box material stripped away during opening (e.g., delaminating, tearing surface fibers, etc.) (Class 229/208)
Tearing provides reusable closure (Class 229/210)
Tearing means completely encompasses the box (i.e., the box is in two parts after it is torn open) (Class 229/235)
Tearing allows box to unfold to generally planar form (Class 229/236)
Specified detail of a score or perforation (e.g., size, spacing, etc.) (Class 229/237)
Box includes a separate tearing element which is gripped and pulled to open the box (Class 229/238)
Nonreclosable box having a section of box material which is completely separated from the box during tearing (e.g., tear strip) (Class 229/240)
Nonreclosable box includes means for tearing it open without completely removing box material (Class 229/243)
  • Tear strip
    Patent number: 5093187
    Abstract: Subject of the invention is a tear strip having a supporting base stretched in predominantly one direction, which strip may be provided with an adhesive layer and is characterized in that it has a supporting base of at least one base layer, which is provided with at least one tough layer, which is tougher than the base layer.
    Type: Grant
    Filed: June 27, 1991
    Date of Patent: March 3, 1992
    Assignee: Beiersdorf AG
    Inventors: Eberhard Engelmann, Gert Schmeer