CPC B31B 70/10 (2017.08) [B31B 70/16 (2017.08); B31B 70/62 (2017.08); B31B 70/88 (2017.08); B31B 2155/002 (2017.08); B31B 2160/106 (2017.08); B31B 2170/20 (2017.08)] | 57 Claims |
1. A method for making a padded envelope, comprising:
conveying a first sheet of paper in a conveying direction;
conveying an expanded sheet of paper in an expanded state in said conveying direction with one side of said expanded sheet of paper facing said first sheet of paper;
conveying a second sheet of paper in said conveying direction with an opposite side of said expanded sheet of paper in said expanded state facing said second sheet of paper;
while continuing conveying movement during said conveying of said first sheet of paper, said expanded sheet of paper in said expanded state and said second sheet of paper in said conveying direction, pressing together a region of said first sheet of paper, said expanded sheet of paper and said second sheet of paper which region extends along a direction transverse to the conveying direction and causing said expanded sheet of paper to collapse within said region and said first sheet of paper, said expanded sheet of paper and said second sheet of paper to adhere together within said region; and
while continuing conveying movement during conveying of said first sheet of paper, said expanded sheet of paper and said second sheet of paper in said conveying direction, cutting along said region that is pressed together during said pressing together such as to sever said first sheet of paper, said expanded sheet of paper and said second sheet of paper.
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