Method of producing a sealing means in a microfluidic structure and a microfluidic structure comprising such sealing means
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United States of America Patent
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Aug 22, 1995
Grant Date -
N/A
app pub date -
Jul 22, 1993
filing date -
Feb 8, 1991
priority date (Note) -
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Abstract
A leakage-proof sealing means is provided in a microfluidic channel assembly of the type having first and second flat surface members which when pressed against each other define a microfluidic channel system between them, by recessing a sealing groove structure into the flat surface of the first member, and applying against the first member a counter mould surface having an aligned groove and/or ridge structure of smaller width than the sealing groove structure to define a mould cavity therewith, into which a fluid sealing material is introduced and hardened to form a resilient seal, the top part of which projects above the edges of the sealing groove structure while leaving sufficient space in the upper part thereof to permit complete accommodation of the top part of the resilient seal when compressed by the second assembly member.
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