Seattle's Best Coffee Opens First Franchise Location In Chicago. Chicagoans who love great coffee have something to celebrate: Seattle's Best Coffee, LLC, today announced the opening of its first franchise location in Chicago at 50 East Adams Street.
Wet spinning is required for polymers that require dissolving in a solvent to be spun. It is named wet spinning because the fibres are extruded directly into a liquid bath.
The solution dry spinning method is used to produce over 94.5% of the world's spandex fibers, and the process has five steps: The first step is to produce the prepolymer. This is done by mixing a macroglycol with a diisocyanate monomer. The two compounds are mixed in a reaction vessel to produce a prepolymer.