Nine-lattice envelope

Abstract

The invention discloses a nine-lattice envelope which comprises a left base piece, a middle base piece, a right base piece, an upper left envelope piece, a lower left envelope piece, an upper middle envelope piece, a lower middle envelope piece, an upper right envelope piece and a lower right envelope piece. The right side edge of the left base piece is fixedly connected with the left side edge of the middle base piece, the left side edge of the right base piece is fixedly connected with the right side edge of the middle base piece, the upper edge of the left base piece is fixedly connected with the lower edge of the upper left envelope piece, the lower edge of the left base piece is fixedly connected with the upper edge of the lower left envelope piece, the upper edge of the middle base piece is fixedly connected with the lower edge of the upper middle envelope piece, the lower edge of the middle base piece is fixedly connected with the upper edge of the lower middle envelope piece, the upper edge of the right base piece is fixedly connected with the lower edge of the upper right envelope piece, the lower edge of the right base piece is fixedly connected with the upper edge of the lower right envelope piece, and a fold line is pressed at each connecting position. By means of the nine-lattice envelope, stamps are convenient to collect, paper resources are greatly saved, and at the same time, an envelope communication process of a specific transaction can be fully recorded on the same envelope.

Description

technical field [0001] The invention relates to an envelope, in particular to a reusable nine-grid envelope. Background technique [0002] In the prior art, the envelope is generally regarded as a disposable item, which is discarded after use. However, for philatelists, if they collect mailed envelopes, they will use up one envelope each time. After a long period of accumulation, the number of used envelopes is very large. Moreover, in some specific fields or situations, dealing with a transaction requires multiple consecutive communications, but after multiple communications, in order to record the correspondence of letters, it is very inconvenient to classify and store the used envelopes. And envelopes are easy to lose. [0003] Furthermore, when the law requires a complete record of the communication process of a matter, it is difficult to achieve the level of rigor required by the law when using a conventional envelope for letter communication, thus seriously affecting...

AI Technical Summary

Problems solved by technology

However, for philatelists, if they collect mailed envelopes, they need to use up an envelope each time. After a long period of accumulation, the number of used envelopes is very large.

Moreover, in some specific fields or situations, dealing with a transaction requires multiple consecutive communications, but after multiple communications, in order to record the exchange of letters, it is very incon

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