Abstract: The invention provides a process for producing finely divided particles of core-shell structure where the shell comprises at least one polymer, said process comprising the steps of: i. providing a first aerosol stream of droplets in a carrier gas stream wherein the droplets comprise at least one monomer and charging droplets of the first aerosol with electric charge; ii. providing a second aerosol stream of solid particles in a carrier gas stream and charging the solid particles of the aerosol with an electric charge opposite to the electric charge on the droplets of the first aerosol stream; iii. mixing the first aerosol stream with the second aerosol stream to form a mixed aerosol stream; iv. initiating a polymerization of the monomers by irradiating this mixed aerosol stream with electromagnetic radiation. The invention also provides the finely divided particles of core-shell structure which are obtainable by this process.

Abstract: To permit high-speed operation of a longitudinal folding apparatus in which a folding blade engages between two folding rollers (11), the folding blade and the folding rollers of the folding apparatus (7) are made sufficiently long to accomodate a plurality of essentially immediately adjacently positioned printed products. The printed products are supplied by a transport system (1, 20) with spacing by about the length of a product therebetween, and, in accordance with the invention, are repositioned immediately adjacent each other, with gaps between immediately adjacent products longer than the spacing between products as supplied.