ENVELOPE STRUCTURE

Japanese Patent JP3767935

B2

PROBLEM TO BE SOLVED: To arouse an interest to the addressee of an envelope in the contents and give him some extent of information without unsealing it and prolong the staying time in his side. SOLUTION: A sheet of rectangular shape is folded into four to continuously form one front face 14, one rear face 13, and two inner faces 11, 12. The respective peripheral edges are mutually connected. The rear face 13 is provided with two apertures 13a, 13b and one notch 13c. A slide paper 17 in which letters, figures, and patters or these combined information are printed, is inserted to slide between the rear face and the inner faces adjacent to the rear face. In this state, the peripheral edge of the rear face is stuck to the peripheral edge of the inner faces. The slide paper 17 is provided with a tongue 18 at the end which appears from the notch to the surface of the rear face to give information in sequence in the aperture in accordance with the length pulled out when the tongue is drawn to slide the slide paper.