Fabrication method of microfluidic devices

摘要

Fabrication method of microfluidic devices consisting of a sheet (1) which is 200 micrometer thick or less and a rigid part (3), both made of thermoplastic polymeric material includes degasification of a polymeric sheet of thermoplastic material (1), an auxiliary rigid part (2), and a polymeric rigid part of thermoplastic material (3). A temporary bonding procedure, of the degassed thermoplastic polymeric sheet (1) to a degassed auxiliary rigid part (2), is conducted producing a sheet-auxiliary part set (4). A permanent bonding procedure bonds the thermoplastic polymeric sheet (1) of the sheet-auxiliary part set (4) obtained in the previous temporary bonding stage, to the thermoplastic polymeric rigid part (3) which was initially degassed. The auxiliary rigid part (2) of the thermoplastic polymeric sheet (1) permanently bonded to the thermoplastic rigid part (3), is detached to produce a final part which is completely polymeric (5).

主权项

1. Method for manufacturing microfluidic devices including a thermoplastic polymer sheet which is 200 micrometer thick or less used to seal, without adhesive, a channel, and used to form a microvalve or a micropump formed on a rigid part, both made of thermoplastic polymeric material, comprising the stages of:
initially degasifying: a thermoplastic polymeric sheet, an auxiliary thermoplastic polymeric rigid part, a thermoplastic polymeric rigid part of thermoplastic material; bonding without adhesive through a temporary bonding procedure, of the degassed thermoplastic polymeric sheet to the degassed auxiliary thermoplastic polymeric rigid part, obtaining a sheet-auxiliary part set; bonding without adhesive through a permanent bonding procedure, of the thermoplastic polymeric sheet of the sheet-auxiliary part set obtained in the previous temporary bonding stage, to the thermoplastic polymeric rigid part which was initially degassed; detaching the auxiliary thermoplastic polymeric rigid part of the thermoplastic polymeric sheet permanently bonded to the thermoplastic polymeric rigid part, to produce a final part which is completely polymeric.