Multi-layer lidding film with peel off and push through portions
AssigneeAmcor Flexibles North America, Inc.
InventorsJerome E. McGinnis, Heidi C. Koehler, Sierra Schwier, Denis L. Smith, Marcus B. Zink
Life of this patent
Estimating the term…
Abstract
The present invention discloses a child resistant lidding film with a unique structure, comprising a peel-off portion and a push-through portion. The peel-off portion includes a first layer composed of a blend of high-density polyethylene (HDPE) and hydrocarbon resin. The push-through portion includes a second layer comprising cyclic olefin copolymer (COC). Notably, the first layer is in direct contact with the second layer, providing a child resistant and convenient peel-push opening functionality for packaging applications.
Claims20
A child resistant lidding film comprising:
- a peel off portion comprising:
- a first outer layer;
- and
- a first inner layer comprising a blend of high-density polyethylene (HDPE) and hydrocarbon resin;
- and
- a push through portion comprising:
- a second outer layer comprising a polyethylene polymer;
- and
- a second inner layer comprising at least 90% cyclic olefin copolymer (COC), the second inner layer in direct contact with the first inner layer.
A peel-push lid for a blister package comprising:
- a peel off portion comprising a first layer comprising high-density polyethylene (HDPE) and hydrocarbon resin;
- a push through portion comprising a second layer comprising cyclic olefin copolymer (COC), the second layer in direct contact with the first layer;
- and
- an average interfacial bond strength between the first layer and the second layer is in a range of from 25 g/in (25 g/25.4 mm) to 400 g/in (400 g/25.4 mm) as measured by ASTM F88.
Dependencies are inferred from the claim text.