Claims
- 1. A method of sterilizing a medical grade film comprising exposing the film to high energy radiation, wherein the film comprises a vinyl chloride resin containing sufficient barium sulfate to prevent discoloration of said film when exposed to said radiation.
- 2. The method of sterilizing a medical grade film according to claim 1, wherein said high energy radiation is gamma radiation or electron beam radiation.
- 3. The method of sterilizing a medical grade film according to claim 2, wherein said vinyl chloride resin is polyvinyl chloride.
- 4. The method of sterilizing medical grade film according to claim 2, wherein said film is irradiated with one to five megarads of gamma radiation.
- 5. The method of sterilizing medical grade film according to claim 3, wherein said film further comprises a plasticizer.
- 6. The method of sterilizing medical grade film according to claim 5, wherein said plasticizer is di-2-ethylhexyl adipate.
- 7. The method of sterilizing medical grade film according to claim 5, wherein said film further comprises epoxidized soybean oil, a stabilizer and a lubricant.
- 8. The method of sterilizing medical grade film according to claim 1, wherein said medical grade film consists essentially of polyvinyl chloride, di-2-ethylhexyl adipate, an organo zinc soap blend, epoxidized soybean oil, stearic acid and barium sulfate.
- 9. The method of sterilizing medical grade film according to claim 1, wherein said film has a thickness in the range of 2-30 mils.
- 10. The method of sterilizing medical grade film according to claim 1, wherein said film has a thickness in the range of 6-18 mils.
- 11. The method of sterilizing medical grade film according to claim 5, wherein said film has a thickness in the range of 2-30 mils.
- 12. The method of sterilizing medical grade film according to claim 5, wherein said film has a thickness in the range of 6-18 mils.
- 13. The method of sterilizing medical grade film according to claim 1, wherein said medical grade film consists essentially of 60-69 wt. % polyvinyl chloride, 19-25 wt. % plasticizer, 0.5-1.3 wt. % stabilizer, 0.15-0.2 wt. % lubricant, 9.5-10.5 wt. % epoxidized soybean oil, and 0.5-5 wt. % barium sulfate.
- 14. The method of sterilizing medical grade film according t claim 13, wherein the amount of said barium sulfate is 2.9 wt. %.
Parent Case Info
This is a continuation of application Ser. No. 07/037,043, filed Apr. 10, 1987, now U.S. Pat. No. 4,839,233, issued June 13, 1989.
US Referenced Citations (18)
Non-Patent Literature Citations (1)
Entry |
Silverman, Disinfection, Sterilization and Preservation, 3rd Ed., Lea & Febiger, Philadelphia (1983), pp. 89.105. |
Continuations (1)
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Number |
Date |
Country |
Parent |
37043 |
Apr 1987 |
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