US 11,673,292 B2
Fiber preform of commingled fiber bundle for overmolding
Probir Kumar Guha, Bloomfield Hills, MI (US)
Assigned to J. & P. Coats Limited, Uxbridge (GB)
Filed by Coats Group PLC, Uxbridge (GB)
Filed on Jan. 3, 2020, as Appl. No. 16/733,629.
Application 16/733,629 is a continuation in part of application No. PCT/IB2018/000856, filed on Jul. 5, 2018.
Claims priority of provisional application 62/592,493, filed on Nov. 30, 2017.
Claims priority of provisional application 62/592,481, filed on Nov. 30, 2017.
Claims priority of provisional application 62/548,155, filed on Aug. 21, 2017.
Claims priority of provisional application 62/540,771, filed on Aug. 3, 2017.
Claims priority of provisional application 62/540,830, filed on Aug. 3, 2017.
Claims priority of provisional application 62/528,685, filed on Jul. 5, 2017.
Claims priority of provisional application 62/528,658, filed on Jul. 5, 2017.
Prior Publication US 2020/0139583 A1, May 7, 2020
Int. Cl. B29B 11/16 (2006.01); B29C 70/54 (2006.01); B32B 7/09 (2019.01); B29C 70/42 (2006.01); B32B 5/02 (2006.01); B32B 5/26 (2006.01); D03D 11/00 (2006.01); D04H 13/00 (2006.01); B29B 11/12 (2006.01); B29C 70/48 (2006.01); C08J 5/24 (2006.01); B29C 70/08 (2006.01); B29C 70/68 (2006.01); B29K 101/12 (2006.01); B29K 309/08 (2006.01); C08J 5/04 (2006.01); B29L 31/30 (2006.01); B29K 301/12 (2006.01)
CPC B29B 11/16 (2013.01) [B29B 11/12 (2013.01); B29C 70/42 (2013.01); B29C 70/48 (2013.01); B29C 70/541 (2013.01); B29C 70/543 (2013.01); B32B 5/024 (2013.01); B32B 5/26 (2013.01); B32B 7/09 (2019.01); C08J 5/243 (2021.05); D03D 11/00 (2013.01); D04H 13/00 (2013.01); B29C 70/08 (2013.01); B29C 70/68 (2013.01); B29K 2101/12 (2013.01); B29K 2301/12 (2013.01); B29K 2309/08 (2013.01); B29L 2031/30 (2013.01); B32B 2260/023 (2013.01); B32B 2260/046 (2013.01); C08J 5/042 (2013.01); D10B 2101/06 (2013.01); D10B 2101/12 (2013.01); D10B 2331/021 (2013.01); D10B 2401/041 (2013.01); D10B 2505/02 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A fiber preform for use in a molding process, the fiber preform comprising:
a substrate;
a fiber bundle comprising one or more types of reinforcing fibers the fiber bundle arranged on the substrate;
a thread attaching the arranged fiber bundle to the substrate by a plurality of stitches of the thread to form a first preform layer having a principal orientation; and
a plurality of subsequent preform layers formed of the fiber bundle and successively stacked from the first preform layer, each subsequent preform layer arranged on a preceding preform layer and attached to the preceding preform layer by additional stitches of the thread, wherein an orientation of each subsequent preform layer is offset from that of the preceding preform layer by an angular displacement relative to the principal orientation of the first layer;
wherein the fiber bundle consists of only the reinforcing fibers.
 
18. A fiber preform for use in a molding process, the fiber preform comprising:
a substrate;
a fiber bundle comprising one or more types of reinforcing fibers the fiber bundle arranged on the substrate;
a thread attaching the arranged fiber bundle to the substrate by a plurality of stitches of the thread to form a first preform layer having a principal orientation; and
a plurality of subsequent preform layers formed of the fiber bundle and successively stacked from the first preform layer, each subsequent preform layer arranged on a preceding preform layer and attached to the preceding preform layer by additional stitches of the thread, wherein an orientation of each subsequent preform layer is offset from that of the preceding preform layer by an angular displacement relative to the principal orientation of the first layer;
wherein the thread is present in an amount of 0.1 to 7 weight percent of the fiber bundle.