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.
Whiplash. Traumatic injury such as whiplash can cause a sore trapezius muscle. During an accident or injury the head is snapped backwards and then forwards, straining the trapezius muscles and causing neck pain, according to the MayoClinic.com. Whiplash can be caused by auto accidents, physical abuse or contact sports.