If you ask a processor what type of PE they are running, a typical response will be, âIâm running a 7-melt, 953 material.â Translation: a material with a nominal melt index of 7 g/10 min. and a density of 0.953 grams/cm3.
If the cause of the popping sound is due to cavitation then this can help relieve pressure in the joints and provide some relief from neck pain and other joint pain, although this is likely to just be temporary.
âAnd in the case of the neck pop, you hear a crack as the gas pops out of the fluid.â. Generally, joint cracking is not harmful, Dr. Visco said, but when extreme stretching becomes a habit (to relieve tension, for instance), it can cause irritation of soft tissue or cartilage. And because important nerves and blood vessels run through the neck, amateur neck-cracking is ill advised. A gentle stretching routine is preferable.