| 摘要 |
A mailer type business form having four parts is produced from two sheets, to define a mailer having top and bottom plies formed from one sheet, and first and second intermediate plies formed from another sheet. The top and first intermediate plies have aligned die cut windows in them, and the second intermediate ply forms a return envelope with the bottom ply. A combination outgoing address for the mailer, and return address for the return envelope, are printed on a portion of the second intermediate ply readily visible through the die cut windows. During production of the mailer, slugs are cut out of one of the sheets, and removed by vacuum or a blast of pressurized gas, and the first and second sheets are merged together, adhesive being applied to the sheets to attach them together.
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