AN ENVELOPER

摘要

An enveloper (10) for creating a material envelope around a battery plat e, including an anvil (29) and a rotatable cut-and-crease roller (28) having a knife (35) and a generally diametrically opposed crease blade (36) for acting against the anvil (29) to cut-and-crease material fed through the enveloper (10) wherein the enveloper (10) further includes a control (57) for varying the rotationa l velocity of the roller (28) during a rotational cycle to position the crease to form a symmetrical envelope around a plate passing through the enveloper (10).