Envelope opening process and composition

Details Envelope opening process and composition Envelope opening process and composition

B - Operations, Transporting

43

M

149/12, 8/93.55

B43M 7/00 (2006.01)

Patent

CA 1135459

ABSTRACT In an envelope opening process in which an aqueous solution of a chemical degradation agent, such as tartaric acid is applied to envelope edges and the envelope edges are then heated and subjected to a mild mechanical action, penetration of the degradation agent through the envelope paper at its edges is assured by including in the aqueous solution from 2.5% to 30% of a glycol ether, such as ethylene glycol ethyl ether.

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