Carbon Neutral

The language of envelopes

The language of paper

Weights and measurements of paper

The German, Walter Porstmann proposed a standard norm for paper formats which was adopted in Germany in 1922 as DIN formats (Deutsche Industrie Norme) and which today is the standard international measurement (ISO 218). Based on the metric system, he started from one square metre of paper, so that the successive divisions maintained the same proportion between the sides of the rectangle. Only one formula presents this relationship:

He thus obtained the starting formula: A0 = 1m2 = 841x1189 mm.

Series for successive halving of DIN formats starting from

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Index of: Envelopes


National and international associations, through their organizations, publications and congresses, are witnesses to the reality, to the evolution of the world of the envelope and its manufacturers.

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The language of envelopes

Envelopes communicate

The main aim of a designer or marketing professional is to make sure that the reply envelope relates two key messages "open me!" and "respond."

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