ALEXANDRIA, Va., July 16 -- United States Patent no. 12,668,019, issued on June 30, was assigned to BB ENGINEERING GMBH (Remscheid, Germany).
"Method and apparatus for stretching plastic films" was invented by Klaus Schafer (Remscheid, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method and an apparatus are directed to stretching plastic films. The plastic film is held at at least two opposite longitudinal sides by a plurality of holding means and the holding means are guided along stretching paths at both longitudinal sides of the plastic film. In order to increase productivity, several plastic films are held, mutually spaced one on top of the other, by the holding means and are simultaneously s...