Bundling and strapping devices and methods

摘要

A device and method for forming stacks of planar elements, particularly newspapers, wherein the elements are serially discharged onto a receiver, compressed to eliminate entrapped air, and bound with fusible tape. The stacks are bound by providing tape which extends across the path through which the individual stacks travel. As the stacks move down the path, they press against the tape, causing it to be discharged from sources thereof and to wrap itself around three sides of the stack. Welding heads are then moved in from the sides to press the tape together and fuse it into two portions. One portion is wrapped around the stack and the other constitutes the tape which will be contacted by the next stack in the cycle.