A transdermal patch and a method for manufacture of a...

Details A transdermal patch and a method for manufacture of a... A transdermal patch and a method for manufacture of a...

A - Human Necessities

61

K

A61K 9/70 (2006.01) B32B 27/08 (2006.01) B32B 27/30 (2006.01) B32B 27/36 (2006.01) C09J 7/02 (2006.01)

Patent

CA 2275539

A dermatological patch sheet obtained by bonding a polyalkylene terephthalate film to one side of a composite film made of a resin composition comprising 100 parts by weight of a polyvinyl chloride/polyurethane composite and 2 to 10 parts by weight of a styrene/ethylene/butylene/styrene copolymer through an adhesive layer to form a base sheet, forming a primer layer made of a saturated polyester resin on the surface of the polyalkylene terephthalate film of the base sheet, and superposing a medicataed pressure-sensitive adhesive layer made of a styrene/diene/styrene block copolymer on this primer.

Cette invention concerne une feuille de timbre cutané qui est obtenue en collant un film de térephtalate de polyalcylène sur un côté d'un film composite fait d'une composition de résine. Cette composition de résine contient 100 parts en poids d'un composite chlorure de polyvinyle/polyuréthanne et de 2 à 10 parts en poids d'un copolymère styrène/éthylène/butylène/styrène. Le collage du premier film sur le second se fait à l'aide d'une couche adhésive de manière à former une feuille de base. On forme ensuite une couche d'amorçage se composant résine de polyester saturée à la surface du film de térephtalate de polyalcylène de la feuille de base. On superpose enfin sur cette couche d'amorçage une couche autocollante et médicamenteuse faite d'un copolymère séquencé styrène/diène/styrène.

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