3M An excellent solution for your 3D printer build platform.
2.0 mil polyester backing & 1.2 mil silicone adhesive
High tear resistance
Works up to 400°F, very high tensile strength
Long-term aging
High strength backing
Dark Green Works up to 400°F Shelf life: 18 months (from date of manufacture) Tensile strength: 48 lb./in., (840 N/100mm) Size 2" x 72 yd. (5.1 cm x 65.8 m) Thickness 3.2 mil.