Patent ID: 6991758

Claim:
In a method for production of a web with good breathing properties, which is formed from at least one layer based on a mineral filler-containing plastic film, wherein the web is stretched so that the good breathing properties of the filler-containing plastic film are retained, the improvement comprising: stretching the web in two successive steps in a longitudinal direction of the web; and embossing on a surface of the web at least in areas, between the two steps of stretching in the longitudinal direction, wherein the web is embossed in a stretch-embossing slot (SP) formed between two embossing rollers ( 3 , 4 ), wherein the web is first supplied via a holding roller pair ( 20 , 21 ) to the first embossing roller ( 3 ), with the formation of a first stretching slot (S 1 ), and is stretched in the longitudinal direction in the stretching slot (S 1 ), then is conducted to the stretch-embossing slot (SP) with a first partial looping of the first embossing roller ( 3 ), and after passing through the stretch-embossing slot (SP) with a second partial looping of the second embossing roller ( 4 ) is conducted away and subsequently is conducted between the embossing roller ( 4 ) and the roller pair ( 50 , 51 ) via the roller pair ( 50 , 51 ) with a formation of a second stretching slot (S 2 ), and the web is stretched again in the longitudinal direction in the second stretching slot (S 2 ).