Salgado's material black string like contents in packet

I so love the Salgado's potatoe crisps as it's such a healthy alternative to crisps, and doesn't contain all the harmfull ingredients normal crisps do. I've been eating Salgado's vegetable chips since they were just a small unknown company, and when the packaging used to be see through plastic. Today as Im in the office having my packet of Salgado's I put a few in my mouth only to nearly vomit it all out as I was chewing I felt I was chewing something stringy and material like, I spit it out to see it's some kind of black string. I checked the inside of the packed and noticed there is more... so gross!