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.
A swollen bump on back of neck can be caused by physical injury of the neck muscle or tendon. If the muscle of the neck are damaged or injured, the part of the muscle that is injured will stick out forming a bump. Injured neck muscle or tendon cause sharp pain when moving the head.