An oscilloscope measures the amount of voltage that goes through the bag to the inside. The shield bag stops all but about 30 volts. The bubble bag stops only about 200 volts, letting about 800 inside. In cases where the electronic circuit board needs physical protection and static protection, one of two methods is usually followed. Either the circuit board is placed into shield bag and then placed into a foam-lined box or the circuit board is placed into the cushion bag and then the cushion bag is placed into the shield bag.
Some manufacturers use rolls of pink cushion material.
They cut a piece off of the roll and wrap the circuit board and then place the wrapped board into the shield bag. I hope that this information has been helpful to you. Thank you for your time and consideration of Static Control Components static control products. The polyethylene of the cushion material is loaded with an antistat. This antistat makes the cushion material able to dissipate static, and by making the surfact more slick, reduce tribocharging.