	US 11,813,810 B2
	Induction heating of composite parts
Eren Hursit, Romeo, MI (US); Henry Richardson, Romeo, MI (US); Ken Mazich, Romeo, MI (US); Brendan Keenan, Romeo, MI (US); Joe Thomas, Romeo, MI (US); and Brandon Madaus, Romeo, MI (US)
Assigned to Zephyros, Inc., Romeo, MI (US)
Appl. No. 16/633,810
Filed by Zephyros, Inc., Romeo, MI (US)
PCT Filed Aug. 13, 2018, PCT No. PCT/US2018/046423 § 371(c)(1), (2) Date Jan. 24, 2020, PCT Pub. No. WO2019/036322, PCT Pub. Date Feb. 21, 2019.
Claims priority of provisional application 62/545,452, filed on Aug. 14, 2017.
Prior Publication US 2020/0164602 A1, May 28, 2020
Int. Cl. B29C 70/52 (2006.01); B29C 35/14 (2006.01); B29K 63/00 (2006.01); B29K 75/00 (2006.01); B29K 305/00 (2006.01); B29K 307/04 (2006.01)

CPC B29C 70/528 (2013.01) [B29C 35/14 (2013.01); B29K 2063/00 (2013.01); B29K 2075/00 (2013.01); B29K 2305/00 (2013.01); B29K 2307/04 (2013.01)]

16 Claims

1. A method of making an article comprising:

feeding a fibrous material from a continuous supply through a pultrusion die, said pultrusion die having a length of less than 1.0 meters, an inductively heated die insert, a tool housing made from a thermally insulating material, and an opening therein into which a reactant may be introduced and feeding said fibrous material at a rate of at least 0.5 meters per minute;

contacting the fibrous material with a resin when the fibrous material is passed through the pultrusion die, forming a composite mass with a skinned exterior via the inductively heated die insert upon exit from the pultrusion die; and

contacting the composite mass with an in-line induction coil to complete a curing process;

wherein the resin includes a metallic component to facilitate cure via the inductively heated die insert and the in-line induction heating coil.