The present invention relates to a method of production and an arrangement for feeding and guiding web materials in laterally separate paths from a web supply to a machine for producing packing blanks. The polymeric reagents are useful for, among other things, forming polymer-active agent conjugates. An opposite substrate includes a protrusion arranged so as to protrude toward the thin film transistor substrate. Each connector assembly comprises a first part which rests on a bottom wall of the panel and has a portion which extends through an opening in the bottom wall and back through the opening and is connected to a second part to form an eyelet through which the cable passes.