Pull tab innerseal
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United States of America Patent
Stats
-
Dec 13, 1994
Issued Date -
N/A
app pub date -
Apr 8, 1992
filing date -
Jul 20, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A reinforced sheet material suitable for making innerseals and sealing membranes for containers. The sheet material comprises a layer of sealing material for bonding the sheet to a container, a layer of material substantially impermeable to air and moisture, and a reinforcing layer comprising at least two plies of monoaxially oriented film combined in lamination with the strong direction of at least one ply crossing the weak direction of another ply. Tabbed innerseals made from the sheet material of this invention exhibit less springback than do tabs of conventional tabbed innerseals. The invention also includes innerseals and sealing membranes made from the aforementioned sheet material and containers utilizing these innerseals and sealing membranes.
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