| 摘要 |
An insert for preventing a gummed flap from adhering to an envelope while being printed upon in a laser printer is substantially nonadherent to moister-activated and/or heat-activated gums and adhesives. The nonadherent insert is made from sheet material which is configured to correspond to flaps of commonly used envelopes. The insert is positioned between the gummed flap and a body portion of an envelope to be printed upon prior to feeding the envelope into a laser printer. The insert prevents the gum of the flap, which may be activated by the heat inside a laser printer, from adhering to the body of the envelope. The insert is removed from the envelope after printing and may be repeatedly used.
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