Plastic in extruded form for use in manufacture, * other than iron-on material of plastic for the shoe industry; * packing, sealing and insulating materials; insulating nonwovens in the nature of non-woven fabric; filtering materials of plastic or foamed material as semi-finished products for dry and wet filtration; nonwovens for insulation purposes for use in building construction and electrical insulation; secondary carpet backings made of rubber, gutta-percha, rubber gum, asbestos, mica an...