Multi-Layer Polyolefin Film

1 . A film structure comprising:

a first layer comprising a quantity of at least one polyolefin polymer and a quantity of a cycloolefin polymer;

a second layer comprising a quantity of at least one polyolefin polymer and a quantity of a cycloolefin polymer; and

a third layer comprising a quantity of at least one polymer selected from the group consisting of metallocene-catalyzed polyolefin polymers, polyamide polymers, and mixtures thereof.

2 . The film structure of claim 1 wherein said first layer comprises from about 5-30% by weight of said film structure.

3 . The film structure of claim 1 wherein said second layer comprises from about 5-30% by weight of said film structure.

4 . The film structure of claim 2 wherein said first layer comprises about 15% by weight of said film structure.

5 . The film structure of claim 3 wherein said second layer comprises about 15% by weight of said film structure.

6 . The film structure of claim 5 wherein said third layer comprises from about 60-90% by weight of said film structure.

7 . The film structure of claim 6 wherein said third layer comprises about 70% by weight of said film structure.

8 . The film structure of claim 1 wherein said polyolefin polymer comprises from about 50-99% by weight of said first layer.

9 . The film structure of claim 8 wherein said polyolefin polymer comprises about 75% by weight of said first layer.

10 . The film structure of claim 1 wherein said polyolefin polymer comprises from about 60-90% by weight of said second layer.

11 . The film structure of claim 10 wherein said polyolefin polymer comprises about 75% by weight of said second layer.

12 . The film structure of claim 1 wherein said polymer comprises from about 1-100% by weight of said third layer.

13 . The film structure of claim 12 wherein said polymer comprises from about 50-90% by weight of said third layer.

14 . The film structure of claim 1 wherein said polyolefin polymer is selected from the group consisting of polyethylene, polypropylene, polybutenes, polyisoprene, copolymers thereof, terpolymers thereof, α-olefin propylene copolymers, and mixtures thereof.

15 . The film structure of claim 14 wherein said polyolefin polymer is selected from the group consisting of linear low density polyethylene, low density polyethylene, ultra low density polyethylene, ethylene acetyl acetate, and mixtures thereof.

16 . The film structure of claim 1 wherein said cycloolefin polymer is selected from the group consisting of cyclopentadiene, cyclohexadiene, cyclooctatetetraene, polynorbornene, polydimethyloctahydronaphthalene, cyclopentene, poly(5-methyl) norbornene, and mixtures thereof.

17 . The film structure of claim 1 wherein said metallocene-catalyzed polyolefin polymer is metallocene linear low density polyethylene.

18 . The film structure of claim 1 wherein said polyamide polymer is a nylon compound.

19 . The film structure of claim 1 wherein said film structure has a thickness of up to 10 mils.

20 . The film structure of claim 19 wherein said film structure has a thickness of from about 2.7-5.5 mils.

21 . The film structure of claim 1 wherein said film structure is a blown film structure.

22 . The film structure of claim 1 wherein said third layer is disposed between said first layer and said second layer.

23 . The film structure of claim 22 further comprising a plurality of additional layers disposed between said first layer and said second layer.

24 . The film structure of claim 23 wherein said additional layers comprises at least one layer comprising from about 70-100% by weight of a polyolefin polymer.

25 . The film structure of claim 24 wherein said polyolefin polymer is selected from the group consisting of polyethylene, polypropylene, polybutenes, polyisoprene, copolymers thereof, terpolymers thereof, α-olefin propylene copolymers, and mixtures thereof.

26 . The film structure of claim 25 wherein said polyolefin polymer is selected from the group consisting of linear low density polyethylene, low density polyethylene, ultra low density polyethylene, ethylene acetyl acetate, and mixtures thereof.

27 . The film structure of claim 23 wherein said third layer comprises a metallocene-catalyzed polyolefin polymer and said additional layers comprise at least one layer comprising a polyamide polymer.

28 . The film structure of claim 27 wherein said metallocene-catalyzed polyolefin polymer is metallocene linear low density polyethylene and said polyamide polymer is a nylon compound.

29 . The film structure of claim 23 wherein said third layer comprises a polyamide polymer and said additional layers comprise at least one layer comprising a metallocene-catalyzed polyolefin polymer.

30 . The film structure of claim 23 wherein said film structure comprises five layers.

31 . The film structure of claim 23 wherein said film structure comprises seven layers.

32 . The film structure of claim 23 wherein said film structure comprises nine layers.

33 . The film structure of claim 1 , said first layer further comprising at least one additive selected from the group consisting of color concentrates, neutralizers, process aids, lubricants, stabilizers, hydrocarbon resins, antistatics, slip agents, and antiblocking agents.

34 . The film structure of claim 1 , said second layer further comprising at least one additive selected from the group consisting of color concentrates, neutralizers, process aids, lubricants, stabilizers, hydrocarbon resins, antistatics, slip agents and antiblocking agents.

35 . The film structure of claim 1 , said third layer further comprising at least one additive selected from the group consisting of color concentrates, neutralizers, process aids, lubricants, stabilizers, hydrocarbon resins, antistatics, slip agents and antiblocking agents.

36 . The film structure of claim 24 , said layer further comprising at least one additive selected from the group consisting of color concentrates, neutralizers, process aids, lubricants, stabilizers, hydrocarbon resins, antistatics, slip agents and antiblocking agents.

37 . The film structure of claim 27 , said layer further comprising at least one additive selected from the group consisting of color concentrates, neutralizers, process aids, lubricants, stabilizers, hydrocarbon resins, antistatics, slip agents and antiblocking agents.

38 . A film structure comprising:

a first layer comprising a quantity of at least one polyolefin polymer and a quantity of a cycloolefin polymer;

a second layer comprising a quantity of at least one polyolefin polymer and a quantity of a cycloolefin polymer; and

a third layer comprising a quantity of a metallocene-catalyzed polyolefin polymer.

39 . The film structure of claim 38 wherein said first layer comprises from about 5-30% by weight of said film structure.

40 . The film structure of claim 38 wherein said second layer comprises from about 5-30% by weight of said film structure.

41 . The film structure of claim 39 wherein said first layer comprises about 15% by weight of said film structure.

42 . The film structure of claim 40 wherein said second layer comprises about 15% by weight of said film structure.

43 . The film structure of claim 42 wherein said third layer comprises from about 60-90% by weight of said film structure.

44 . The film structure of claim 43 wherein said third layer comprises about 70% by weight of said film structure.

45 . The film structure of claim 38 wherein said polyolefin polymer comprises from about 50-99% by weight of said first layer.

46 . The film structure of claim 45 wherein said polyolefin polymer comprises about 75% by weight of said first layer.

47 . The film structure of claim 38 wherein said polyolefin polymer comprises from about 60-90% by weight of said second layer.

48 . The film structure of claim 47 wherein said polyolefin polymer comprises about 75% by weight of said second layer.

49 . The film structure of claim 38 wherein said polymer comprises from about 1-100% by weight of said third layer.

50 . The film structure of claim 49 wherein said polymer comprises from about 50-90% by weight of said third layer.

51 . The film structure of claim 38 wherein said polyolefin polymer is selected from the group consisting of polyethylene, polypropylene, polybutenes, polyisoprene, copolymers thereof, terpolymers thereof, α-olefin propylene copolymers, and mixtures thereof.

52 . The film structure of claim 51 wherein said polyolefin polymer is selected from the group consisting of linear low density polyethylene, low density polyethylene, ultra low density polyethylene, ethylene acetyl acetate, and mixtures thereof.

53 . The film structure of claim 38 wherein said cycloolefin polymer is selected from the group consisting of cyclopentadiene, cyclohexadiene, cyclooctatetetraene, polynorbornene, polydimethyloctahydronaphthalene, cyclopentene, poly(5-methyl) norbornene, and mixtures thereof.

54 . The film structure of claim 38 wherein said metallocene-catalyzed polyolefin polymer is metallocene linear low density polyethylene.

55 . The film structure of claim 38 wherein said film structure has a thickness of up to 10 mils.

56 . The film structure of claim 55 wherein said film structure has a thickness of from about 2.7-5.5 mils.

57 . The film structure of claim 38 wherein said film structure is a blown film structure.

58 . The film structure of claim 38 wherein said third layer is disposed between said first layer and said second layer.

59 . The film structure of claim 58 further comprising a plurality of additional layers disposed between said first layer and said second layer.

60 . The film structure of claim 59 wherein said additional layers comprises at least one layer comprising from about 70-100% by weight of a polyolefin polymer.

61 . The film structure of claim 60 wherein said polyolefin polymer is selected from the group consisting of polyethylene, polypropylene, polybutenes, polyisoprene, copolymers thereof, terpolymers thereof, α-olefin propylene copolymers, and mixtures thereof.

62 . The film structure of claim 61 wherein said polyolefin polymer is selected from the group consisting of linear low density polyethylene, low density polyethylene, ultra low density polyethylene, ethylene acetyl acetate, and mixtures thereof.

63 . The film structure of claim 59 wherein said additional layers comprises at least one layer comprising a polyamide polymer.

64 . The film structure of claim 59 wherein said film structure comprises five layers.

65 . The film structure of claim 59 wherein said film structure comprises seven layers.

66 . The film structure of claim 59 wherein said film structure comprises nine layers.

67 . The film structure of claim 38 , said first layer further comprising at least one additive selected from the group consisting of color concentrates, neutralizers, process aids, lubricants, stabilizers, hydrocarbon resins, antistatics, slip agents, and antiblocking agents.

68 . The film structure of claim 38 , said second layer further comprising at least one additive selected from the group consisting of color concentrates, neutralizers, process aids, lubricants, stabilizers, hydrocarbon resins, antistatics, slip agents and antiblocking agents.

69 . The film structure of claim 38 , said third layer further comprising at least one additive selected from the group consisting of color concentrates, neutralizers, process aids, lubricants, stabilizers, hydrocarbon resins, antistatics, slip agents and antiblocking agents.

70 . The film structure of claim 60 , said layer further comprising at least one additive selected from the group consisting of color concentrates, neutralizers, process aids, lubricants, stabilizers, hydrocarbon resins, antistatics, slip agents and antiblocking agents.

71 . The film structure of claim 63 , said layer further comprising at least one additive selected from the group consisting of color concentrates, neutralizers, process aids, lubricants, stabilizers, hydrocarbon resins, antistatics, slip agents and antiblocking agents.