... The demands were set fast:Durable and tough but not too heavyLightproof Reflecting insideSoon it was clear,that ... contain 30 to 40 percent DEHP by weight,but that figure can reach 80 percent in ... production :lightweight, elastic,stainable,mothproof,tearproof, do not decay and are resistant against leach as well as ... material we use.It was not easy ,but we knew we could not go for the alternative(PVC). ...