Patent ID: 9664304
Date: 2017-05-30
CPC Classifications: B01L,F16K

Claim:
1. A normally closed valve for microfluidic components, comprising: a polymer substrate defining a first chamber and a second chamber and including a fluidic barrier element separating the first chamber from the second chamber; and a polymer membrane film arranged on the polymer substrate and configured to control a fluid coupling between the first chamber and the second chamber, wherein, in an initial configuration, a connection of the polymer membrane film to the fluidic barrier element closes the fluid coupling between the first chamber and the second chamber, the connection being formed by a first wax layer that is materially bonded to the polymer membrane film and the fluidic barrier element, and wherein the first chamber is at least partially filled with a substance in the initial configuration and configured such that applying a pressure to the substance greater than a breaking pressure threshold disconnects the first wax layer from one of the polymer membrane film and the fluidic barrier element so as to open the fluid coupling between the first chamber and the second chamber to transfer the substance from the first chamber into the second chamber.