Patent ID: 11911980
Assignee: PROFOL GMBH
Field: Other special machines (Mechanical engineering)
Classification: CPC B  Y | IPC B

Claim 1:
2. The semi-finished product web according to claim 1, characterized by at least one of the following features:
i) in the region of the welding seams, the proportional weight of fibers is at least 1.2 times as high as in the other regions of the semi-finished product web;
ii) the thickness of the semi-finished product web in the region of the welding seams is at least 1.2 times as high, but not more than 4.0 times as high, as the arithmetic mean of the other regions of the semi-finished product web;
iii) the weight of fibers per unit length in the movement direction, arithmetically averaged over all the welding seams of a semi-finished product web, in the region of the welding seams is 1.4 to 2.0 times as high as the arithmetic mean of the other regions of the semi-finished product web; and
iv) in the movement direction of the semi-finished product web, the width of the regions of the welding seams are more than 1 mm to 6 mm.