METHOD OF MANUFACTURING A WINDOW MAILING ENVELOPE

摘要

A method is described for manufacturing a mailing enveloppe (10) that is formed of an opaque plastics material and has a window aperture (12) cut out of an opaque plastics material through which a mailing address may be viewed. The window aperture is covered on the inside of the envelope by a clear plastics material (28) that is formed as a transparent label and is adhered to the interior surface of the envelope during its manufacture before the side seams of the envelope have been formed.