Patents by Inventor Jan C. Mersman

Jan C. Mersman has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 4872302
    Abstract: Articles are stretch wrapped in a plastic film by forming a tube around them from a flat plastic film, sealing the longitudinal edges of the film and then longitudinally stretching the tube to cause it to constrict on the articles being wrapped. The tube is initially of a sufficient diameter to avoid contact with the articles. Both the articles and the tube are conveyed downstream. The tube is fed downstream by a positive transport means which isolates the tube forming operation from any downstream tension. A downstream mechanism pulls on the tube faster than the positive transport means conveys it causing the tube to stretch and constrict on the articles to be wrapped. The tube is closed behind each set of articles and the downstream portion is severed from the upstream portion forming a tube terminus behind one set of articles and in front of the next set.
    Type: Grant
    Filed: August 2, 1988
    Date of Patent: October 10, 1989
    Assignee: Borden BV
    Inventors: Cornelis van Eijsden, Jan C. Mersman