This unit uses once shaping technology , and production efficiency is high , and the products quality is good . The machine architecture is designed the science reasonably , and it is reliable to move smooth and steadyly , and it is convenient to operate to keep in repair . The polyethylene air cushion membrane ( calling the polyethylene air bubble membrane again ) is one kind of packing material universally used at present time , the merit such as not only possesses good shock absorption , impact resistance and heat seal , and still has a corrosion preventive and the transparency is good etc . Extensively used electrical home appliances , precision instrument , bike and is assembled many kinds of product packings such as the ammonia fat man is all etc .