RF energy sealable web of film
First Claim
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1. A two-layer web of film for manufacturing flexible, autoclavable containers, said web of film comprising:
- a first layer of polyester;
a second layer of polyvinyl chloride that does not include a diethylhexylphthalate plasticizer or epoxidized oil;
the second layer having a greater thickness than the first layer that when radio frequency energy is applied to the second layer, the first layer is sealed to a second layer surface.
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Abstract
A web of film for use in manufacturing flexible containers is provided. In an embodiment, the film comprises a first layer constructed from a non-RF responsive material and a second layer constructed from a RF responsive material. The second layer has a sufficiently greater thickness than the first layer that when sufficient RF energy is applied to the second layer, the first layer is sealed to a second film surface. In an embodiment, the film has three layers. A container constructed from the film is also provided.
40 Citations
21 Claims
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1. A two-layer web of film for manufacturing flexible, autoclavable containers, said web of film comprising:
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a first layer of polyester; a second layer of polyvinyl chloride that does not include a diethylhexylphthalate plasticizer or epoxidized oil; the second layer having a greater thickness than the first layer that when radio frequency energy is applied to the second layer, the first layer is sealed to a second layer surface. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A two-layer web of film for manufacturing flexible, autoclavable medical containers comprising:
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a first layer of film constructed form a non-radio frequency responsive material that does not include a diethylhexylphthalate plasticizer or epoxidized oil; a second layer constructed from a radio frequency responsive material that does not include a diethylhexylphthalate plasticizer or epoxidized oil; and the second layer having a thickness that is greater than the first layer that the first layer can be welded to a thermoplastic film by applying radio frequency energy to the second layer. - View Dependent Claims (8, 9, 10, 11, 12, 13)
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14. A three-layer web of film for constructing flexible containers to be sterilized at a temperature of at least 230°
- comprising;
a first layer of a non-radio frequency responsive material having a thickness of approximately 0.0002 inches to about 0.0020 inches; a second layer of a radio frequency responsive material having a thickness of approximately 0.0046 inches to about 0.026 inches; a third layer of a non-radio frequency responsive material having a thickness of approximately 0.0002 inches to about 0.0020 inches; and the first layer being welded to a layer having a similar structure by applying radio frequency energy to the web of film. - View Dependent Claims (15, 16, 17, 18, 19, 20)
- comprising;
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21. A flexible medical container, capable of being sterilized at a temperature of at least 230°
- F., for housing under sterile conditions a fluid or solid that can be introduced into a patient, having a body portion with opposed peripherally sealed walls forming the container, the walls of the container being constructed from a three-layer web of film comprising;
a first layer comprising polyester and having a thickness of approximately 0.0002 inches to about 0.0020 inches; a second layer comprising a polyvinyl chloride having a ethylene-vinyl acetate copolymer as a plasticizer, the second layer having a thickness of approximately 0.0046 inches to about 0.026 inches; a third layer comprising polyester and having a thickness of approximately 0.0002 inches to about 0.0020 inches.
- F., for housing under sterile conditions a fluid or solid that can be introduced into a patient, having a body portion with opposed peripherally sealed walls forming the container, the walls of the container being constructed from a three-layer web of film comprising;
Specification