US 11,911,980 B2
Unidirectionally fiber-reinforced endless winding ply
Helmut Bayer, Kienberg (DE); and Konrad Maier, Wasserburg (DE)
Assigned to Profol GmbH, Halfing (DE)
Appl. No. 17/289,627
Filed by PROFOL GMBH, Halfing (DE)
PCT Filed Oct. 30, 2019, PCT No. PCT/EP2019/079666
§ 371(c)(1), (2) Date Apr. 28, 2021,
PCT Pub. No. WO2020/089295, PCT Pub. Date May 7, 2020.
Claims priority of application No. 18203382 (EP), filed on Oct. 30, 2018.
Prior Publication US 2021/0339486 A1, Nov. 4, 2021
Int. Cl. B29C 70/50 (2006.01); B29C 65/08 (2006.01); B29C 65/00 (2006.01); B29C 70/54 (2006.01)
CPC B29C 70/50 (2013.01) [B29C 65/08 (2013.01); B29C 66/1122 (2013.01); B29C 66/1142 (2013.01); B29C 66/435 (2013.01); B29C 66/71 (2013.01); B29C 66/7212 (2013.01); B29C 66/72141 (2013.01); B29C 70/543 (2013.01); B29C 70/545 (2013.01); Y10T 428/19 (2015.01)] 16 Claims
OG exemplary drawing
 
1. A single-ply semi-finished product web which is reinforced with unidirectionally orientated continuous fibers and exhibits a movement direction and comprises a matrix containing at least 60% by weight of one or more thermoplastic polymers selected from the group consisting of polyamide, polyolefin and mixtures thereof and comprising welding seams of overlapping fiber-reinforced semi-finished product web segments at periodically occurring intervals, wherein the fiber plies of the fiber-reinforced semi-finished product web segments overlap, wherein the thickness of the semi-finished product web in the region of the welding seams is at least exactly as high as the arithmetic mean of the other regions of the semi-finished product web, and wherein the width of the regions of the welding seams is more than 1 mm to 8 mm in the movement direction, and wherein the thickness of the semi-finished product web in the regions outside the regions of the welding seams is 0.01 mm to 0.40 mm, and wherein the unidirectionally orientated continuous fibers enclose a predetermined angle with the movement direction, the value α of which is in the range of more than 0° to 90°.