Film composition and method of making the same
View Patent ↗This disclosure relates to a film comprising a metal receiving layer, the first layer comprising a blend of a first polymer and 5-25 wt. % of a second polymer, the second polymer is a metallocene-catalyzed elastomeric ethylene-propylene copolymer having an ethylene content of less than or equal to 10 wt. %, the first polymer is different from the second polymer.
1. A film comprising a first layer, said first layer comprising a blend of a first polymer comprising an olefin monomer having 2 to 10 carbons, and greater than 15 and equal to or less than 25 wt. % of a second polymer, said second polymer comprising a metallocene-catalyzed elastomeric ethylene-propylene copolymer having an ethylene content of less than or equal to 10 wt. %, wherein said first polymer is different from said second polymer, and wherein one or more layers of the film include cavitating agents or void-initiating particles.
2. The film of claim 1 , wherein said first polymer is a homopolymer.
3. The film of claim 1 , wherein said first polymer is a Zeigler-Natta catalyzed polypropylene.
4. The film of claim 1 , wherein said second polymer has an ethylene content of less than or equal to 9 wt. %.
5. The film of claim 1 , wherein said blend has 10-25 wt. % of said second polymer.
6. The film of claim 1 , wherein said blend has 15-25 wt. % of said second polymer.
7. The film of claim 1 , further comprising a second polymeric layer.
8. The film of claim 1 , further comprising a metal layer, said metal layer is manufactured by vacuum deposit of at least one of aluminum, silver, copper, gold, silicon, germanium, iron, and nickel.
9. A film comprising a first layer, said first layer comprising a blend of a first polymer comprising an olefin monomer having 2 to 10 carbons, and greater than 15 and equal to or less than 25 wt. % of a second polymer, said second polymer comprising a metallocene-catalyzed elastomeric propylene-.alpha-olefin copolymer having a melting temperature in the range of about 80° C. to about 135° C., wherein said first polymer is different from said second polymer, and wherein one or more layers of the film include cavitating agents or void-initiating particles.
10. The film of claim 9 , wherein said first polymer is a homopolymer.
11. The film of claim 9 , wherein said first polymer is a Zeigler-Natta catalyzed polypropylene.
12. The film of claim 9 , wherein said second polymer is an elastomeric ethylene-propylene copolymer having an ethylene content of less than or equal to 9 wt. %.
13. The film of claim 9 , wherein said blend has 10-25 wt. % of said second polymer.
14. The film of claim 9 , wherein said blend has 15-25 wt. % of said second polymer.
15. The film of claim 9 , further comprising a second polymeric layer.
16. The film of claim 9 , further comprising a metal layer, said metal layer is manufactured by vacuum deposit of at least one of aluminum, silver, copper, gold, silicon, germanium, iron, and nickel.
17. A method of making film of claim 1 comprising:
a. extruding a blend of said first polymer and said second polymer to form said first layer, optionally co-extruding said blend with at least one polymeric material to form a multilayer film.
18. The method of claim 17 further comprising:
b. orienting said film in at least one of MD, TD, or both.
19. The method of claim 17 further comprising:
c. metallizing said first layer.
20. A package comprising a film of claim 1 .
21. The film of claim 9 , wherein said second polymer is a metallocene-catalyzed elastomeric ethylene-propylene copolymer having an ethylene contents of less than or equal to 11 wt %.