Method and apparatus for making envelope assemblies

Package making – Methods – With contents treating

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Details

53435, 53460, 53117, 53520, 53206, B65B 6304, B65B 1148

Patent

active

041898958

ABSTRACT:
An envelope contains a separate enclosure that is formed from the same sheet material. Sheet material having a first portion and a narrower second portion is folded so portions are superimposed one upon the other. At some time, adhesive is applied to the wider regions of the first portion. By severing the sheet material along the edge common to the first and second portions while maintaining their superimposed relationship, they are separated and then subsequently folded so the first portion envelops the second portion, and the envelope is produced as a result of the adhesive. The severing is carried out while the superimposed portions are suitably restrained, e.g., within a buckle plate folder or within a knife-folding unit or between a pair of moving belts.

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