Method of unitizing packages by means of a stretchable adhesive tape
AssigneeMinnesota Mining and Manufacturing Company
InventorsMark E. Schwartz, Karl W. Kreckel
Life of this patent
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Abstract
Means for unitizing objects, e.g., packages, through the use of a stretchable, detackifiable, pressure-sensitive adhesive tape. In the preferred embodiment, the tape comprises a highly extensible, substantially non-recoverable backing bearing on at least one major surface thereof a layer of pressure-sensitive adhesive. This tape has the dual capability of (1) being capable of being firmly bonded to a substrate and (2) being detackified after being stretched.
Claims5
A package combined with a length of tape, said tape comprising a stretchable, detackifiable pressure-sensitive adhesive tape having a backing having a Young's modulus of at least about 2,500 psi but less than about 100,000 psi, a lengthwise elongation at break of at least about 150% and low recovery of less than about 50% after being stretched, said backing having a layer of pressure-sensitive adhesive thereon, said tape having a first portion thereof in a substantially unstretched condition and adhered to said package and a second portion thereof stretched to at least 200% of its original length and wrapped about said package, whereby the tack of said second portion of said tape is detackified by at least about 10%.
A plurality of objects that are arranged next to one another and which are banded together by a length of tape, said tape comprising a stretchable, detackifiable pressure-sensitive adhesive tape having a backing having a Young's modulus of at least about 2,500 psi but less than about 100,000 psi, a lengthwise elongation at break of at least about 150% and low recovery of less than about 50% after being stretched, said backing having a layer of pressure-sensitive adhesive thereon, said tape having a first portion thereof in a substantially unstretched condition and adhered to one of said objects and a second portion thereof stretched to at least 200% of its original length and wrapped about at least another one of said objects, whereby the tack of said second portion of said tape is detackified by at least about 10%.
Dependencies are inferred from the claim text.