Has anyone tried cellophane instead of parchment? That's what they used for hash in hash making countries in the past, maybe still do. I ask because I noticed that parchment paper does tend to shed fibers. If it's silicone paper it's possible that some silicone could get in the product. Cellophane is all natural, made from wood cellulose. It softens at 175 C (347 F) so it should be fine for pressing. That's above the BP of THC anyway so you'd never get that high. If you cooled the product it would probably peel off okay. Where do you get it? Bags of cookies I guess. It's pretty recognizable when you get some, not many plastics are crinkly, except those boiling bags. I don't know what those are made of but it's not cellophane.
I might try it sometime. Weed is in short supply for me these days so won't be doing any pressing for a while yet I'm afraid.