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.
Changes in synovial fluid pressure and moving ligaments and tendons can both cause neck cracking. See Treatment for Neck Pain. However, if the neck cracking noise is accompanied by pain, swelling, or some other concerning symptoms, then it may represent a problem that should be checked by a qualified health professional. See Neck Pain Causes