ENVELOPE FORM FOR PREPARING A MULTI-SHEET MAIL PIECE

摘要

An envelope form suitable for folding about one or more sheets having predetermined lengths and widths. The form includes a lower panel which forms the back panel of the resulting envelope, and the length of which is approximately equal to one-third of the predetermined sheet length, and the width of which is substantially less than the predetermined sheet width. The width of the lower panel is substantially less than the width of the sheets so that automatic centering guides may be employed to center the sheets with respect to the forms. An upper panel is attached to the lower panel along a first transverse fold line. The length of the upper panel being substantially greater than the length of lower panel and the width of the upper panel being at least slightly greater than the width of the sheet. Side flaps are provided to close the edges of the resulting envelope and an upper, or trailing flap is provided to close the mouth of the envelope. An apparatus suitable for printing envelope forms and sheets, assembling these sheets with the envelope form and folding and sealing the resulting accumulation to form a mail piece is also disclosed.