Plastic films, especially for use in a dermal or transdermal therapeutic system

US6733775B1 · kind B1 · utility

Assignee

• LTS Lohmann Therapie-Systeme AG · DE

Inventors

• Robert-Peter Klein · Neuwied, DE
• Reinhold Meconi · Neuwied, DE
• Ursula Götte · Unkel, DE

Key dates

• Filing date: Jun 10, 2002
• Grant date: May 11, 2004
• Expiry date: Jun 10, 2022

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61P9/10
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

A dermal or transdermal therapeutic system comprising a sheet-like substrate or reservoir containing readily volatile auxiliary agents or active agents, which substrate or reservoir is covered on one of its sides with a backing layer impermeable to the ingredients and on the opposite side with a detachable, likewise impermeable protective layer to prevent loss of ingredients during prolonged storage, is characterized in that both the backing layer and the protective layer are made of plastic film which is on both sides with vapour-deposited metal