| Title of Invention | A RUPTURABLE SEAL |
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| Abstract | A rupturable seal comprising a film of a first polymer, a film of a second polymer and a sealing interlayer. The sealing interlayer has a melting point higher than the melting points of either the first polymer or the second polymer and comprises a plurality of micro-fibers each having an average effective fiber diameter from about 2.5µm to about 7.0µm. Fusion bonding of films of the first polymer and the second polymer to either side of a sealing interlayer produces a rupturable seal having a frangible interface including portions thereof wherein the first polymer contacts the second polymer. The rupturable seal parts at the frangible interface by application of force causing a gap and separation of the first film from the second film. |
| Full Text |
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3271-CHENP-2005 CORRESPONDENCE OTHERS.pdf
3271-CHENP-2005 CORRESPONDENCE PO.pdf
3271-CHENP-2005 DESCRIPTION (COMPLETE).pdf
3271-CHENP-2005 POWER OF ATTORNEY.pdf
| Patent Number | 229750 | ||||||||||||
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| Indian Patent Application Number | 3271/CHENP/2005 | ||||||||||||
| PG Journal Number | 13/2009 | ||||||||||||
| Publication Date | 27-Mar-2009 | ||||||||||||
| Grant Date | 20-Feb-2009 | ||||||||||||
| Date of Filing | 05-Dec-2005 | ||||||||||||
| Name of Patentee | 3M INNOVATIVE PROPERTIES COMPANY | ||||||||||||
| Applicant Address | 3M Center, Post Office Box 33427, Saint Paul, MN 55133-3427, | ||||||||||||
Inventors:
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| PCT International Classification Number | B65D81/00 | ||||||||||||
| PCT International Application Number | PCT/US2004/017730 | ||||||||||||
| PCT International Filing date | 2004-06-05 | ||||||||||||
PCT Conventions:
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