SelfSeal NoMistakes self-adhesive lamination ensures perfect, safe laminating for heat sensitive materials as these cold sheets work without a machine. Documents can be accessed for up to 24 hours after the initial seal to reposition your item or smooth out bubbles and wrinkles in the laminate. After 24 hours, the laminating seal becomes permanent to provide durable protection for your important or frequently used items. Glossy. Laminator Supply Type: Cold Lamination Supply Format: Sheet Suggested Applications: Document For Use With: No Machine Required.