Laser welding is suited for making channels without use of any adhesive. Clear Plastic laser welding is more challenging than the traditional laser welding that requires the use of a black substrate. We can laser weld two clear plastic layers together. The channel can also withstand relatively high pressure. We have know-how in material selection, rapid mask making, thermal stress control, high precision welding, high speed welding, non-flat surface welding, automatic leak testing, etc. We can also achieve various welded line widths to achieve frangible seals with narrow range of breaking force.