Opal Envelopes :: Useful Information


		POCKET ENVELOPES	WALLETS ENVELOPES	TOUGH ENVELOPES	PRINTING SERVICES	MAILING SERVICES

Useful Information Envelopes are divided into two basic types:- Pockets Wallets / Bankers Size is always stated as Depth x Width. The width is always the seal-flap side and stated second. For example, 110x220mm denotes a wallet, whereas 220x110 denotes a pocket. Each type has certain common terminology even if the shapes differ, such as seal-flap, seam etc. The back or reverse of an envelope is the side on which the seams are made. The other side is called the face. Seal Flap Types Gummed flaps Gummed flap envelopes need to be moistened to seal down, and are used for hand sealing as well as on automatic inserting machines. Self-seal flaps Self-seal envelopes have two lines of natural rubber latex, and seal on contact without the need for moistening. Re-sealed flaps Re-seal envelopes are similiar to self-seal envelopes but can be opened and resealed as necessary, ie for customs inspection etc.. Peel and seal flaps Peel and seal envelopes have a single line of synthetic contact adhesive which is covered by a silicone release liner paper. Removal of the liner paper allows the flap to be sealed. Window Envelopes The specifications for window envelopes can be confusing. Whilst there is no standard way of expressing window dimensions, we have adopted the following procedure:-
Wallets	Pockets

Measurements are taken with the envelope seal flap at the top. The DEPTH of the window (A) is the dimension at a right angle to the seal flap. The WIDTH of the window (B) is the dimension parallel to the seal flap. Measurements are expressed as DEPTH (A) first, and WIDTH (B) second. The position is measured by the distance (D) up from the base of the envelope, and (C) in from the left hand side. Remember, take the stress out of buying envelopes, print and mailing - talk to Opal, the bespoke envelope manufacturing specialists