Here's a Fons/Porter tutorial
https://www.youtube.com/watch?v=6gMr0tPvmBk
Just showing it as an example. I won't be making it-it seemed like there was a lot of waste of "valuable" tie silk to me.
I would think you can gently hand wash the silk ones. You don't really care if the TIE's stabilizer is weakened, you are going to dismantle it anyway.
I have silk blouses that I launder carefully.
The FTC (or whoever governs garment marking ) only allows ONE type of cleaning method on a garment. So if it says dry clean only, dry clean only. But if it says dry clean, it is possible (take care & test first) to launder. I know my rayon garments all say dry clean, but home launder just fine.
I love the fan tie quilt linked above!