FENESTRATION UNIT WITH INDUCTION WELDED JOINT AND MANUFACTURING SYSTEM AND MANUFACTURING METHOD FOR THE SAME

1 . A method of manufacturing a fenestration unit comprising:

providing a first member of the fenestration unit, the first member formed at least partly from a polymeric material;

providing a second member of the fenestration unit, the second member formed at least partly from a polymeric material;

providing a weld interface member having a susceptor portion and a cover portion, at least the susceptor portion including a susceptor material that is susceptible to induction heating, the cover portion including a cover material;

positioning the weld interface member against the first member and the second member at a joint arrangement;

heating, by induction heating, the susceptor material to melt the susceptor portion and the cover portion; and

re-solidifying the susceptor portion and the cover portion to attach the first member and the second member, including covering the susceptor material at the joint arrangement with a resolidified portion of the cover material.

2 . The method of claim 1 , wherein at least one of the first member and the second member is a lineal member extending along a longitudinal axis, and wherein the joint arrangement includes a terminal end of the lineal member.

3 . The method of claim 2 , wherein the first member comprises a sill riser of the fenestration unit, and the second member comprises a jamb of the fenestration unit, the joint arrangement including the terminal end of the sill riser and the jamb.

4 . The method of claim 2 , wherein the first member is a first lineal member with a first terminal end, the second member is a second lineal member with a second terminal end, and the joint arrangement includes the first terminal end and the second terminal end.

5 . The method of claim 2 , wherein the first member includes a side surface facing away from the axis, and wherein positioning the weld interface member includes layering the weld interface member against the side surface and against the second member.

6 . The method of claim 1 , wherein at least one of the first member and the second member includes a channel, and further comprising inserting the weld interface member into the channel.

7 . The method of claim 1 , wherein at least one of the first member and the second member includes a channel, and wherein re-solidifying the susceptor portion and the cover portion includes defining a seal limiting fluid movement with respect to the cavity.

8 . The method of claim 1 , further comprising forming the weld interface member, including forming the cover portion that covers over the susceptor portion.

9 . The method of claim 1 , further comprising re-heating, by induction heating, the susceptor material to disjoin the first member and the second member.

10 . A weld interface member for joining a first member and a second member of a fenestration unit at a joint arrangement, the first member and the second member formed at least partly from a polymeric material, the weld interface member comprising:

a susceptor portion;

a cover portion;

at least the susceptor portion including a susceptor material that is susceptible to induction heating, the cover portion including a cover material; and

the susceptor material being susceptible to induction heating for melting the susceptor portion and the cover portion, the cover material configured to re-solidify at a resolidified portion that covers the susceptor material at the joint arrangement.

11 . The weld interface member of claim 10 , wherein the susceptor portion includes the susceptor material embedded in an interface polymeric material, and wherein the cover portion includes the interface polymeric material.

12 . The weld interface member of claim 11 , wherein the interface polymeric material is vinyl.

13 . The weld interface member of claim 10 , wherein the cover portion includes a substantially planar surface configured to overlap the first member.

14 . The weld interface member of claim 13 , wherein the weld interface member includes a plurality of substantially planar surface that are orthogonal to each other.

15 . The weld interface member of claim 14 , wherein the susceptor portion comprises a band extending continuously over the plurality of substantially planar surfaces.

16 . The weld interface member of claim 10 , wherein the cover portion is included at a peripheral edge of the weld interface member.

17 . The weld interface member of claim 10 , further comprising a gasket portion and a projection that projects from the gasket portion, the gasket portion configured to be received between the first member and the second member.

18 . A manufacturing system for manufacturing a fenestration unit comprising:

an induction welding device;

a handling system for handling a first member of the fenestration unit, a second member of the fenestration unit, and a weld interface member, the first member formed at least partly from a polymeric material, the second member formed at least partly from a polymeric material, and the weld interface member having a susceptor portion and a cover portion, at least the susceptor portion including a susceptor material that is susceptible to induction heating, the cover portion including a cover material, the welding interface member positioned against the first member and the second member at a joint arrangement;

the induction welding device configured to induction heat the susceptor material to melt the susceptor portion and the cover portion before the susceptor portion and cover portion are re-solidified to attach the first member and the second member, wherein the susceptor material is covered at the joint arrangement with a resolidified portion of the cover material.

19 . The manufacturing system of claim 18 , further comprising a control system with a processor for controlling the induction welding device.

20 . The manufacturing system of claim 18 , wherein the handling system is configured to compress the first member, the second member, and the weld interface member.