Also, crushed glass can be used in reflective road paints, road beds, and the grit for sand blasting. Plastic is a strong, light-weight material that is easily molded into almost any shape. Not all plastic is made with the same recipe. Each plastic type is chemically engineered to melt, bend, or be formed in a certain way. In fact, the numbers on the bottom of plastic products do not accurately reflect the varied recipes used to make products and are poor indicators as to whether or not a product is acceptable for recycling.
Some plastics have markets for recycling.
Plastics can be recycled into any products which have identical chemical properties - for example pop bottles can be shredded, pelletized and made into carpet or polyester clothing. Because of health concerns, recycled plastics are seldom used in making food containers. Approximate energy needed to make 1 lb. Petroleum and natural gas are resources found primarily in the Persian Gulf, Northern Africa, North America, Western Europe, Indonesia, and Venezuela. Some of the resins will add strength or flexibility, while others will change the melting temperature.