First translucent UV-block films.3M Corp.'s Drug Delivery Systems Div. in St. Paul St. Paul as a missionary he fearlessly confronts the “perils of waters, of robbers, in the city, in the wilderness.” [N.T.: II Cor. 11:26] See : Bravery , Minn., is developing a line of translucent translucent slightly penetrable by light rays. UV-blocking films for use in making transdermal transdermal /trans·der·mal/ (-der´m'l) entering through the dermis, or skin, as in administration of a drug via ointment or patch. trans·der·mal adj. Through or by way of the skin. skin patches skin patch, transdermal patch, or transdermal delivery system, adhesive patch used to deliver a controlled dose of a drug through the skin over a period of time. for drug delivery. They're believed to be the first see-through films with UV protection (to preserve the drug's potency or stability), which is normally attained with opaque or metalized films. The UV blocker is nano-sized TiO2 particles in a polyethylene heat-seal layer extrusion coated onto the polyester film. The first film is 2-rail Scotchpak 9734 Backing. Its nano-TiO2 content (undisclosed) is able to block 99% of UV wavelengths of 250 to 325 nanometers, protecting most UV-sensitive drugs, 3M notes. (800) 643-8086 * www.3m.com/dds |
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