Railway or tramway sleepers (cross-ties) of wood, not impregnated

Railway or tramway sleepers (cross-ties) of wood, not impregnated

The non-impregnated areas are air permeable and may comprise a functional coating.

made up from unimpregnated, uncoated or uncovered knitted or crocheted textile fabrics and subsequently impregnated, coated or covered with plastics or rubber.

made up from unimpregnated, uncoated or uncovered knitted or crocheted textile fabrics and subsequently impregnated, coated or covered with plastics or rubber.

The areas of the mixture that are not impregnated with rigid foam are removed after curing the rigid foam layer.

After vapour-deposition, the surface is coloured in a dyeing station (72), the colour adhering to the regions not wetted with water.

In females that have not been impregnated, the vagina will return to a normal adult size and shape.

A planar, permeable fibrous web (4, 4'), particularly made of filter paper, is impregnated only in some sections with a finely ground ceramic material (6) such that a non-impregnated section (12) is formed.