CPC Subgroup
B29C 53/10 of blown tubular films, e.g. gusseting
Full Title
Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor (B29C61/10 takes precedence) > Bending or folding (B29C53/22, B29C53/34, B29C53/36, B29C53/56 take precedence) > of blown tubular films, e.g. gusseting