Barcode is read through a window If you intend your barcode to be read through a window, please follow these requirements: • The window position must be at least 15mm from the top, left and right edges of the envelope, and be at least 18mm from its bottom edge • The maximum gloss value of the window material should be equal to or less than 150 when measured at 60° in accordance with ASTM 2457 standard test method for specula gloss of plastic films • The window haze must be equal to or less than 75% in accordance with ASTM D1003-00 standard test method for haze of plastic films • The window envelope material must be robust enough not to become deformed, and fixed to the envelope evenly across the surface area it is contact with. • Any items placed inside the envelope must fit securely and not move around • The barcode must always be visable, with at least a 2mm clear zone around it. It must never skew more than 5° relative to the edge of the envelope • The recipients name may be tapped out above and to the right of the window, providing that the remainder of the address is fully visable at all times, and that the recipients name taps back into the window • The number of windows on a single mail piece must not exceed two • The windows must not exceed 50% of the surface area for one face of the mail item. The windowa=s should not infringe any of the clear zones on the mail piece Address and barcode are printed If you intend your address and barcode to be printed on the front of the envelope and include a window on the reverse for non-address information please follow these requirements: • Only one window is permitted • The window must not exceed 50% of the surface area • The window envelope material must be robust enough not to become deformed and fixed to the envelope evenly across the surface area it is in contact with Windows on the front and back of the envelopes Envelopes with a window on each side, one of the front and one on the back can only be used if the following requirements are met: • Minimum mailpiece length is 212mm (maximum is 240mm) • Maximum thickness of 1mm • Paper inserts only • Maximum weight 20g • The window on the front face must be rectangular with a maximum sixe of 90mm length and 45mm height. It must be positioned between 18mm and 20mm from the bottom and right edge of the mailpiece
• The window on the back must be circualar with a maximum diameter of 48mm. The perimeter of the window must be 31 = 1mm from the bottom of the envelope and centred along the edge. Sealing All items must be securely sealed, on all sides, taking care to avoid too much gum. Envelope flaps may fold either to the back or front of the mailpiece. If the flap folds to the front (address side) of the mailpiece, the edge of the flap must not fall within any required clear zone. • Customers must not use metal clips or staples. • The items must be sealed on all sides. • Perforations and tear off slips are not permitted. Sealing Tolerances Opening flaps must be gummed and sealed as far along the edge as possible. All remaining edges must be sealed.There is a maximum tolerance of 25mm of the envelope top and sides (see diagram below) where the flaps do not have to be gummed or sealed.
Envelope Flap Sealing
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