After "orange drops" came out, other cap manufacturers (CDE, Elmenco, Arco, Mallory etc) imitated the construction in various colors (black, rusty brown, dark blue, sky blue, pine green, red, yellow, ochre and even bright orange). All had radial leads like "orange drops." The colloquial name for all of them is "dips."
From your description, I'm guessing you have some Mallory dips, and they should be made like (or at least equivalent to) the "orange drops" (plastic films such as Mylar).
Agree, pix would help for positive ID.