Wound spool of web material

A wound spool of film, comprising:

• a film strip having a lead end with longitudinally extending edges and a transverse edge;
• and
• a spool comprising:
• a core;
• means for attaching said lead end to said core with said transverse edge close to said core;
• a pair of radially extended end flanges at respective opposite ends of said core;
• a pair of circumferentially and axially extended shoulders between said end flanges and said core for supporting at least a portion of said longitudinally extending edges of said lead end, said film strip being wound about said core;
• each of said shoulders having an axially extended frusto-conical portion adjacent to and extended from said end flange toward said core, each said frusto-concial portion having an axial length and a cone angle and being positioned for supporting one of said longitudinally extending edges of said lead end;
• said means for attaching, said axial length and said cone angle being sufficient for winding said lead end with said longitudinally extending edges supported on and about said frusto-conical portions and for causing a first convolution of said film strip to bow inwardly toward said core thereby radially spacing the first convolution from at least an axially central portion of a second convolution of said film strip.