Method to reduce damage caused by irradiation of halogenated polymers
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Abstract
A method for producing a polymeric film resistant to degradation during sterilization such as gamma irradiation is presented. The method includes the steps of minimizing the number of free radicals formed during sterilization through use of an inert gas and a reactant scavenger within a sterilization pouch, which reactant scavenger may be acid adsorbents which scavenge the acid by-products formed during irradiation. The films retain physical and mechanical properties with long-term storage. The films are particularly amenable for use as packaging laminates in pharmaceutical, food, semiconductor and medical device industries.
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Citations
44 Claims
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1-22. -22. (canceled)
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23. A method, comprising the steps of:
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sealing a halogenated polymer component, an gas and reactant scavenger into a container impermeable to bacteria and the gas;
irradiating the polymer component and the container with radiation; and
storing the container in a manner such that the reactant scavenger in the container is allowed to contact reactants formed during irradiation. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31, 32, 33)
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34. A packaged, sterilized polymeric component, comprising
a halogenated polymer component; -
an gas;
a reactant scavenger; and
a sealed container holding the polymeric component, gas and reactant scavenger, the sealed container being impermeable to bacteria and the gas. - View Dependent Claims (35, 36, 37, 38, 39, 40, 41, 42, 43, 44)
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Specification