Continuous strip envelopes

Claim 2

A single continuous paper strip having side edges, said strip having disposed serially along its length alternate greater and lesser rectangular areas divided by common transverse folding lines and having associated side edge portions, each said lesser rectangular area being of a size suitable to form the front panel of an envelope, each said greater rectangular area comprising a first panel adapted to form the back panel of an envelope and a second panel adapted to form the flap panel of an envelope, said first and second panels being divided by a second folding line perforated along its length and by cuts extending from the ends of said second folding line toward the corners of said greater rectangular area, said lesser rectangular area being adapted to be folded in a first direction along said first folding line and to be secured to said first panel along their respective overlapping edges, said secured lesser rectangular area and first panel being adapted to be folded in an opposite direction along said second folding line to form a series of envelopes connected along their sides to said associated side edge portions and to each other along said second folding lines, said associated side edge portions of adjacent envelopes being adapted to be secured to one another at their ends to form continuous side edge strips.

Claim 3

The method of forming a continuous series of envelopes from a continuous paper strip as described in claim 1, comprising the following steps: (a) folding said first lesser rectangular area in said first direction along its associated said first folding line; (b) securing said lesser rectangular area to said first panel along the said respective overlapping edges to form the body portion of an envelope; (c) folding said body portion of an envelope in an opposite direction along said second folding line; (d) securing said associated side edges to one another at their overlapping ends; (e) repeating steps (a) to (d) for each of the consecutive sets of areas and panels.

Claim 4

A single continuous paper strip having side edges, said strip having disposed serially along its length alternate greater and lesser rectangular areas divided by common transverse folding lines and having associated side edge portions, each said lesser rectangular area being of a size suitable to form the front panel of an envelope, each said greater rectangular area comprising a first panel adapted to form the back panel of an envelope and a second panel adapted to form the flap panel of an envelope, said first and second panels being divided by a second folding line perforated along its length and by cuts extending from the ends of said second folding line toward the corners of said greater rectangular area, said lesser rectangular area being folded in a first direction along said first folding line and secured to said first panel along their respective overlapping edges, said secured lesser rectangular area and first panel being folded in an opposite direction along said second folding line to form a series of envelopes connected along their sides to said associated side edge portions and to each other along said second folding lines, said associated side edge portions of adjacent envelopes being secured to one another at their ends to form continuous side edge strips and said continuous side edge strips being provided with means to engage paper feeding apparatus.

Claim 5

A single continuous paper strip having side edges, said strip having disposed serially along its length alternate greater and lesser rectangular areas divided by common transverse folding lines and having associated side edge portions, each said lesser rectangular area being of a size suitable to form the front panel of an envelope, each said greater rectangular area comprising a first panel adapted to form the back panel of an envelope and a second panel adapted to form the flap panel of an envelope, said first and second panels being divided by a second folding line perforated along its length and by cuts extending from the ends of said second folding line toward the corners of said greater rectangular area, said lesser rectangular area being folded in a first direction along said first folding line and secured to said first panel along their respective overlapping edges, said secured lesser rectangular area and first panel being folded in an opposite direction along said second folding line to form a series of envelopes connected along their sides to said associated side edge portions and to each other along said second folding lines, said associated side edge portions of adjacent envelopes being secured to one another at their ends to form continuous side edge strips and said continuous side edge strips being provided with means to engage paper feeding apparatus.