US 10,889,039 B2
Method of manufacturing a material strand
Fritz Krause, Hergatz (DE)
Assigned to Cooper Standard GmbH, Lindau/Bodensee (DE)
Appl. No. 16/71,847
Filed by Cooper Standard GmbH, Linda/Bodensee (DE)
PCT Filed Jan. 21, 2016, PCT No. PCT/EP2016/051231
§ 371(c)(1), (2) Date Jul. 20, 2018,
PCT Pub. No. WO2017/125156, PCT Pub. Date Jul. 27, 2017.
Prior Publication US 2019/0344489 A1, Nov. 14, 2019
Int. Cl. B29C 48/00 (2019.01); B29C 48/92 (2019.01); B29C 48/05 (2019.01); B60J 10/23 (2016.01); B60J 10/246 (2016.01); B60J 10/248 (2016.01); B23P 19/04 (2006.01); B29L 31/30 (2006.01)
CPC B29C 48/0021 (2019.02) [B29C 48/0022 (2019.02); B29C 48/0023 (2019.02); B29C 48/05 (2019.02); B29C 48/92 (2019.02); B23P 19/047 (2013.01); B23P 2700/50 (2013.01); B29C 2948/92295 (2019.02); B29L 2031/302 (2013.01); B60J 10/23 (2016.02); B60J 10/246 (2016.02); B60J 10/248 (2016.02)] 20 Claims
OG exemplary drawing
 
1. A method of manufacturing a material strand for sealing, trimming or fastening of doors or windows of a motor vehicle, the method comprising the steps of:
a) extrusion of an extruded strand;
b) prior to forming a transport unit, testing the extruded strand after the extrusion, thereby identifying first segments comprising manufacturing defects and second segments being free from manufacturing defects;
c) prior to forming the transport unit, cutting out the first segments from the extruded strand, thereby causing cut faces at the second segments;
d) prior to forming the transport unit, cutting out the second segments from the extruded strand which have a length less than a predetermined minimum distance (Δd), the minimum distance (Δd) being long enough to form a sealing strip or a trim strip;
e) prior to forming the transport unit, joining cut faces of second segments which have a length equal to or longer than the minimum distance (Δd) to obtain a joint and to form a material strand, the joint having a position within the material strand, wherein the minimum distance (Δd) is maintained between the positions of adjacent joints;
f) prior to forming the transport unit, identifying the position of each joint; and
g) forming the transport unit having a predetermined maximum length by winding the material strand.