Originally Posted by allenflyfishing
Rio does have good lines. PVC is a type of thermoplastic. PVC is a great material for this type of use. However, it does wear out. I'm sure it was just a bad production run without a UV additive in the material. Things happen...
I don't think the first 45 minutes would be sufficient to wear anything out...
If I were looking at the material, I might target the plasticizer additive(s). I don't know, but I would put my money on it having to do with the loop welding process on my particular line. I am thinking that a localized flaw like this, located directly adjacent to the welded loop has a good chance of being a manufacturing process issue.