Envelopes

Envelope construction

Envelope construction is critical. Envelope fold lines can vary considerably, not only between manufacturers, but also within a box from the same manufacturer. Successful printing on envelopes depends upon the quality of the envelopes. When selecting envelopes, consider the following components:

●Weight: The weight of the envelope paper should not exceed 28 lb

(105 g/m2), or jamming may result.

●Construction: Prior to printing, envelopes should lie flat with less than 6 mm (0.25 in.) curl and should not contain air. (Envelopes that trap air may cause problems.)

●Condition: Make sure envelopes are not wrinkled, nicked, or otherwise damaged.

●Sizes: From 90 by 160 mm (3.5 by 6.3 in.) to 178 by 254 mm (7 by 10 in.).

Envelopes with double-side-seams

Double-side-seam construction has vertical seams at both ends of the envelope rather than diagonal seams. This style may be more likely to wrinkle. Be sure the seam extends all the way to the corner of the envelope as illustrated below.

Acceptable

Unacceptable

EN

Guidelines for using paper 155