DOW backing layer films for transdermal drug delivery keep out moisture, oxygen, and contaminants while remaining soft, flexible, and nonirritating. Film composition is based on a balance of chemical resistance, flex and comfort properties, and oxygen and moisture-barrier characteristics. The four or five-layer films are thin, heat sealable, printable, and machinable.
Dow Chemical Co., 2040 Dow Center, Midland, MI 48674, (800) 441-4369.
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