Envelope Style; Envelope Curl - Pitney Bowes DocuMatch Integrated Mail System Reference Manual

4 • Envelopes

Envelope Style

Within the two basic envelope types (die-cut or web-fed) there
are several different envelope styles: commercial, side seam,
and executive. The commercial style envelope is by far the
most popular, followed by executive, then by side seam. For
DocuMatch use, side seam envelopes work best (see pages
4-10 and 4-12).

Envelope Curl

Envelope curl or twist (caused by improper storage or
handling) should not exceed 1/4 in. at any one corner
when the envelope is placed on a flat surface. Total com-
bined envelope curl (at the corners or in the body of the
envelope) should not exceed 3/8 in.
The flap must not exceed 1/8 in. curl.
Envelopes that have a curl at more than one location can
cause poor envelope feeding. Refer to Figure 4-1 on page
4-5.
Folds, especially along the bottom edge of the envelope,
should be crisp and uniform.
Executive and commercial envelopes are more susceptible
to curl because the grain direction is diagonal. That is why
side seam envelopes are preferable.
4-4 DocuMatch ™ Mail Materials Reference Guide