The package of JOB Crystals I have says:

JOB Crystal combines the rich tradition of 170 years and the technology of transparent paper. The production process skips the chemical treatment phase that turns the paper white. These slow burning 1-1/4 size papers are not gummed and allow for complete enjoyment of your tobacco. Your choice is clear with JOB Crystal. Enjoy!

They definitely DON'T contain plastic. Most companies use rice paper, and I've seen rice that goes clear when boiled. I'm just surprised they didn't think to make these sooner. I just twisted a nice one. Have a look. My trusty roach box is holding it for me. :jointsmile: