It is normal that after too long folding you have deep folds. PVC is not a high elasticity material, and the slow recovery of compressed wrinkles is a natural property of the material, but wrinkles are not permanent. Wrinkles will disappear over time. The duration depends on the degree of folding. Expand the Tarpaulin and hang, and it will take about 15 do 30 days to return flat. The recovery time may be longer in case of deeper creases. (Reference ambient temperature: 25 ) At the end of the product description there are methods that will help Tarpaulin recover faster, mam that they will be useful to you. Material: PVC (polyvinyl chloride). Transparency: 100%. Thickness: about 0,35 mm. Water resistance index: 100%. Grammage: 365 g/m². Features: high quality aluminum alloy metal perforations, polyester fiber edge seams, rubber triangular sleeves in the corners, reinforced corners, strong and durable, and can be quick and easy to install. Applications: plant insulation, pergola cover, camping tent, waterproof balcony tent, dustproof, car cover, do grill tablecloth, folia mosquito window, waterproof house cover. It can be used indoors and outdoors. Very useful plastic cover: Protect from cold, moisture, water, heat, dust, weather. Suitable do balconies, roofs, swimming pools, farms, planters, garages, warehouses, shopping malls, parks, restaurants, pavilions and courtyards. Weight and sizes Multifunctional, waterproof and transparent PVC tarpaulin (polyvinyl chloride) can be used do other purposes. For example, furniture, floors, carpets, cabinets, wall paintings, books and plants can protect cars from dust pollution. The Tarpaulin is made of high-quality soft glass and uses technology that can withstand any weather conditions. Strong sunlight, wind, frost and hail will not affect the properties of the material. Tarpaulin is used in places resistant to moisture, dust and weather conditions. Thanks to the use of waterproof materials, whether it is rainy or sunny, the covered material can be kept dry and clean. The product is fixed with a rope, tied do tree trunk, covering a cool place, easy to install and use. illustrate Name: Transparent waterproof tarpaulin. Material: PVC (polyvinyl chloride). Transparency: 100%. Waterproof rating: 100%. Thickness: about 0,35 mm. Weight: 365 g/m². The inner diameter of the rope hole is: about 12 mm. Distance between two holes: about 50 cm. The operating temperature range of the tarpaulin is: about -30C do 60C. It will be a little hard in an environment with a low temperature below 0 . The product contains Transparent Waterproof PVC Perforated Rope Canopy Fabric To notice Since the edge adopts hemming technology, due to different production batches and measuring tools, a deviation of 3-10 cm may occur. Large size/too long PVC Tarpaulin will be made by joining method. This is a necessary process of do production. We would be very grateful for your understanding. PVC Tarpaulin adopts high temperature machine welding to make the seam 100% rainproof. The degree of refraction of light is limited by the material. Factors such as lighting and display effects may show a specific kolor. The views through Tarpaulin can be slightly distorted and not as impressive as real szkło. The raw material will inevitably have a delicate specific smell. When the tarpaulin is naturally stored outside for 2 do 5 days, the smell will disappear. Cleaning Method: Wipe with soap and water or wash with warm water, but do not machine wash. WARM REMINDER 1. If the customer has enough space do storage, we recommend storing it in a roll, which will reduce the occurrence of creases. Of course, you can fold it do storage. The next time you use it, it will take longer for the folds to disappear. 2. Method 1: Spray the table with a small amount of water, then spread a tarpaulin on it, and then lay a heavy object (e.g. pile of books) in a wrinkled place, and the wrinkled part will be flattened after some time. Method 2: Directly spread the tarpaulin on the table, then place the hot towel on the wrinkled part, and finally press a few heavy objects on the towel. Method 3: Place the towel on the wrinkled part, then iron it with an iron, but be careful that the temperature is not too high (no more than 50) so as not to damage the structure of the material. Tarpaulin may smell when ironing, please pay attention to ventilation.