just a note about PVC free vinyl
Is there PVC free vinyl?
Are they Glowforge Friendly, I am sure others will chime in! 
Alternative materials to phthalated vinyl include: virgin PET; PET from recycled plastic bottles; polyolefin and polypropylene materials; acrylic polymers; ethylene- vinyl acetate; and polyurethane made from soy-based resins. Each of these PVC - free thermoplastics creates its own set of performance circumstances.
Here is More on the subject!