The open circulatory system is a system in which a fluid in a cavity called the hemocoel bathes the organs directly with oxygen and nutrients and there is no distinction between blood and interstitial fluid; this combined fluid is called hemolymph or haemolymph.
Be sure to pre-heat dryer. The heat set with an iron it's important to note that temperatures vary from iron to iron. When using an iron, pre-heat iron to maximum temperature safe for fabric. Place aluminum foil on ironing board and the painted side of the fabric down. Press against the backside for at least 15-25 seconds per square foot.
Spray starch. This is optional, but will make your clothes feel more crisp. You can make your own starch spray by completely dissolving one tablespoon of cornstarch in two cups of water. Put this solution into a clean spray bottle and lightly mist the fabric right before you iron on that spot. Polyester can be ironed on either or both sides; if in doubt, iron the wrong side and stop there. 2  For delicate fabrics or those with vibrant colors you'd like to preserve, try to get all the wrinkles out by ironing the wrong side (ironing on the right side can give dark colors an unwanted sheen).