E. I. DuPont India P. Limited manufactures Fire Resistant Mattresses. E. I. DuPont India P. Limited products are ISO certified. Fire Resistant Mattresses or Kevlar® Thread are made from sewing threads that help to increase the overall effectiveness of fire-resistant [FR] mattresses by maintaining the integrity of the seams between the panels containing FR material. These types of mattresses retain much of their strength at high temperatures. They can help the seams and tape edges stay sealed and keep out flames that would threaten to breach the FR barrier and ignite the fuel materials inside the mattress.