Flap Envelope
Flap envelope or envelope flap is produced by the specialized automatic envelope flap gumming machine. Flap envelopes are made of wood free paper, 4+0C printing with glossy varnish on outside, Pocket Cut, with Double adhesive on the flap wheel. Printing envelopes use different paper stock. Print envelopes using Kraft paper are called Kraft envelopes, using brown paper brown envelopes, using recycle paper recycled envelopes. Printing envelops also can be printed into various colors, the most common one is white envelopes, there are also black envelops and mailing envelopes.
