PA, is the abbreiviation of Polyamide, PA layer is usually applied as the top layer of the coatings of aluminum laminated film.
PA is also called Nylon, which is famous as the material of clothing, film and relevant packaging industries. PA layer has several advantages: It has excellent mechanical strength, and it also has high yielding strength, tensile strength and compressive strength. Not only these, PA layer is famous for its high corruption resistance as well.
(This article is from the Internet)
For news or article which is noted "from the Internet", it means that all the content of it comes from the Internet/public source and does not present the opinions of holder of this website and its staff, the only purpose of this post is to display timely information for the public. If you have any doubts or concerns about any news or article posted on this website, do not hesitate to contact us.