Astroparche Paper by Size

The cover should usually match the interior paper, but a slightly oversized format is useful when tabs, pockets, or inserts project beyond the text sheets. The added margin protects those elements from bending during handling and storage. Too much extra width can make the document awkward to shelve, mail, or place in a presentation case, so the increase should be limited to what the contents require. Measure from the binding edge to the furthest projecting element, then allow a modest protective margin. Also consider the spine diameter because thick documents can shift the front edge slightly after binding. Assemble the actual contents with the planned spine before approving the size, rather than relying only on nominal sheet measurements.

Cover size and punch pattern must be selected together. Two covers can have identical dimensions yet be incompatible because the holes use a different pitch, shape, or distance from the binding edge. Coil, comb, wire, and specialty systems each require their own layout. The options under prepunched paper by pattern can help keep covers and text sheets matched to the same system. Prepunched material saves time for repeat jobs, while unpunched stock gives more control when several machines or custom formats are used. Confirm the machine’s exact punching format and run a single cover before processing the full quantity. Heavier covers often produce cleaner results when punched separately from interior sheets.

A3, A4, letter, legal, and ledger are separate standards and should not be treated as interchangeable. A4 is narrower and taller than US letter, while A3 differs from ledger even though both are used for larger documents. Small dimensional differences can cause exposed edges, misaligned holes, or tabs that do not sit correctly. Use the finished interior sheet measurement rather than the document name alone, especially when files come from another country or printing system. Printer trays, punches, laminators, folders, and storage supplies must also accept the chosen format. Create one physical sample from the actual printed sheets before ordering covers in quantity. This is particularly important for prepunched material because trimming after punching can disturb hole spacing and edge margins.

A windowed cover is useful when the title, recipient name, report date, or department information is printed on the first interior sheet and needs to remain visible. The cover size must match the document, while the window position must align with the title design. The available binding covers with windows can help when a different material or window format is required. Print the title sheet, place it behind the cover, and bind a full sample before approving the job. Leave clear space around the visible text so minor sheet movement does not hide letters or make the title appear off center. A solid cover is preferable when the first sheet contains confidential information or the main artwork belongs on the cover itself.