Bag-on-valve assembly
The present invention is directed to a bag-on-valve assembly comprising a valve stem and a flexible bag which is affixed to the valve stem and encapsulates a portion of said valve stem therein. The bag comprises a sealable thermoplastic film which is free of foil and is adapted to have an Tensile Energy to Break value of at least 150 in*ft-lbs in both the machine direction and transverse directions.
1. A bag-on-valve assembly for containing a product to be dispensed from a aerosol container comprising:
a) a valve stem;
b) a flexible bag affixed to said valve stem and encapsulating a portion of said valve stem therein; wherein said bag comprises a sealable thermoplastic film which is free of metallic foil;
c) wherein said film is adapted to have a tensile energy to break value of at least 150 inch-pounds-force per cubic inch in both the machine direction and transverse directions as measured in accordance with ASTM D 882-83; and
d) wherein when said bag-on-valve assembly is actuated said product is dispensed from said bag through said valve stem.
2. The bag-on-valve assembly according to claim 1 , wherein said film has a Slow Rate Penetration Resistance value greater than 21 Newtons.
3. The bag-on-valve assembly according to claim 1 , wherein said film has a Slow Rate Penetration Resistance value greater than 24 Newtons.
4. The bag-on-valve assembly according to claim 1 , wherein said film has a Tensile Peak Load value of at least 22 pound-force.
5. The bag-on-valve assembly according to claim 1 , wherein said film has a Tensile Peak Load value of at least 25 pound-force.
6. The bag-on-valve assembly according to claim 1 , wherein said film has a Tensile Modulus value of at least 70,000 pounds/square inch in both the machine and transverse directions.
7. The bag-on-valve assembly according to claim 1 , wherein said film has an overall thickness of greater than 3.0 mils.
8. The bag-on-valve assembly according to claim 1 , wherein said film has an overall thickness of greater than 4.0 mils.
9. The bag-on-valve assembly according to claim 1 , wherein said film further comprises a heat-sealable layer having a thickness of 3.0 mils or less whereby said bag is heat sealed to said valve stem.
10. The bag-on-valve assembly according to claim 1 , wherein said film comprises at least one layer of nylon.
11. The bag-on-valve assembly according to claim 10 , wherein said nylon is a nylon blend.
12. The bag-on-valve assembly according to claim 1 , wherein said film comprises at least two layers of nylon.
13. The bag-on-valve assembly according to claim 1 , wherein said film comprises at least three layers of nylon.
14. The bag-on-valve assembly according to claim 1 , wherein said film comprises at least two layers of nylon in direct contact with a layer of barrier material.
15. The bag-on-valve assembly according to claim 14 , wherein said film has an oxygen transmission rate of 10 cm/100 inch 2 /24 hr or less as measured at 23° C. and 80% relative humidity.
16. A bag-on-valve assembly for containing a product to be dispensed from an aerosol container comprising:
a) a valve stem;
b) a flexible bag heat-sealed to said valve stem and encapsulating a portion of said valve stem therein; wherein said bag comprises a multilayer heat-sealable thermoplastic film which is free of metallic foil and has an overall film thickness greater than 3.0 mils; wherein said film comprises a heat-sealable layer having a thickness of 3.0 mils or less and at least one layer of nylon;
c) wherein said film is adapted to have an Tensile Energy to Break value of at least 150 inch-pounds-force per cubic inch in both the machine direction and transverse directions as measured in accordance with ASTM D 882-83;
d) wherein when said bag-on-valve assembly is actuated said product is dispensed from said bag through said valve stem.
17. The bag-on-valve assembly according to claim 16 , wherein said film has an overall film thickness greater than 4.0 mils.
18. The bag-on-valve assembly according to claim 16 , wherein said film has a Slow Rate Penetration Resistance value greater than 21 Newtons.
19. The bag-on-valve assembly according to claim 16 , wherein said film has a Slow Rate Penetration Resistance value greater than 22 Newtons.
20. The bag-on-valve assembly according to claim 16 , wherein said film has a Tensile Peak Load value of at least 22 pound-force.
21. The bag-on-valve assembly according to claim 16 , wherein said film has a Tensile Peak Load value of at least 25 pound-force.
22. The bag-on-valve assembly according to claim 16 , wherein said film has a Tensile Modulus value of at least 100,000 pounds/square inch in both the machine and transverse directions.
23. The bag-on-valve assembly according to claim 11 , wherein said film further comprises at least two layers of nylon.
24. The bag-on-valve assembly according to claim 16 , wherein said film comprises at least three layers of nylon.
25. The bag-on-valve assembly according to claim 16 , wherein at one of said layers of nylon is a nylon blend.
26. The bag-on-valve assembly according to claim 16 , wherein said film further comprises at least two layers of nylon in direct contact with a layer of barrier material.
27. The bag-on-valve assembly according to claim 26 , wherein said film has an oxygen transmission rate of 10.0 cm 3 /100 inch 2 /24 hr or less as measured at 23° C. and 80% relative humidity.
28. A bag-on-valve assembly for containing a product to be dispensed from an aerosol container comprising:
a) a valve stem;
b) a flexible bag heat-sealed to said valve stem and encapsulating a portion of said valve stem therein; wherein said bag comprises a multilayer thermoplastic oxygen barrier film which is free of metallic foil and has an overall film thickness greater than 4.0 mils; wherein said film comprises a heat-sealable layer having a thickness of 3.0 mils or less and at least two layers of nylon in direct contact with a layer of ethylene/vinyl alcohol copolymer;
c) wherein said film is adapted to have an oxygen transmission rate of 10.0 cm 3 /100 in 2 /24 hr or less as measured at 23° C. and 80% relative humidity and Tensile Energy to Break value of at least 150 inch-pounds-force per cubic inch in both the machine direction and transverse directions as measured in accordance with ASTM D 882-83;
d) wherein when said bag-on-valve assembly is actuated said product is dispensed from said bag through said valve stem.
29. The bag-on-valve assembly according to claim 28 , wherein said film has a Slow Rate Penetration Resistance value greater than 24 Newtons.
30. The bag-on-valve assembly according to claim 28 , wherein said film has a Tensile Peak Load value of at least 25 pound-force.
31. The bag-on-valve assembly according to claim 28 , wherein said film has a Tensile Modulus value of at least 100,000 pounds/square inch in both the machine and transverse directions.
32. The bag-on-valve assembly according to claim 28 , wherein said film further comprises at least three layers of nylon.
33. The bag-on-valve assembly according to claim 28 , wherein said film has a Slow Rate Penetration Resistance value greater than 24 Newtons.
34. The bag-on-valve assembly according to claim 28 , wherein said film has a Tensile Peak Load value of at least 25 pound-force.
35. The bag-on-valve assembly according to claim 28 , wherein at least one of said nylon layers is a nylon blend.