Patents by Inventor Joachim Libowski

Joachim Libowski 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).

  • Die head and process to manufacture multilayer tubular film
    Patent number: 11654605
    Abstract: In the case of a die head and a process to produce multilayer tubular film made from thermoplastic polymers, the advantages of radial distributors and axial distributors should be combined. This is achieved in that at least one distributor is a plate distributor and at least one distributor is an axial distributor, whereby the plate distributor is located in an annular element of the axial distributor upstream of the melt merge zone to the ring-shaped die.
    Type: Grant
    Filed: October 11, 2019
    Date of Patent: May 23, 2023
    Assignee: HOSOKAWA ALPINE Aktiengesellschaft
    Inventors: Christian Baier, Felix Grimm, Michael Heinecker, Joachim Libowski
  • DIE HEAD AND PROCESS TO MANUFACTURE MULTILAYER TUBULAR FILM
    Publication number: 20200114564
    Abstract: In the case of a die head and a process to produce multilayer tubular film made from thermoplastic polymers, the advantages of radial distributors and axial distributors should be combined. This is achieved in that at least one distributor is a plate distributor and at least one distributor is an axial distributor, whereby the plate distributor is located in an annular element of the axial distributor upstream of the melt merge zone to the ring-shaped die.
    Type: Application
    Filed: October 11, 2019
    Publication date: April 16, 2020
    Applicant: HOSOKAWA ALPINE Aktiengesellschaft
    Inventors: Christian Baier, Felix Grimm, Michael Heinecker, Joachim Libowski
  • Blow head for producing blown tubular film
    Patent number: 7811073
    Abstract: The invention relates to a blow head for producing blown tubular films from thermoplastic materials. Films produced by conventional blow heads often have dull strips or wavy areas, the so-called spiral strips. The aim of the invention is to avoid these negative film properties. For this purpose, the blow head comprises a plurality of annular gap-shaped melt channels arranged concentrically around the center axis of the blow head, the spiral distributor of the inner melt channel being arranged on the inner limiting wall in relation to the center axis of the blow head and the spiral distributor of the outer melt channel being arranged on the outer limiting wall in relation to the center axis of the blow head.
    Type: Grant
    Filed: February 12, 2007
    Date of Patent: October 12, 2010
    Assignee: Hosokawa Alpine Aktiengesellschaft
    Inventors: Franz Mahler, Christian Baier, Michael Heinecker, Joachim Libowski
  • BLOW HEAD FOR PRODUCING BLOWN TUBULAR FILM
    Publication number: 20070172536
    Abstract: The invention relates to a blow head for producing blown tubular films from thermoplastic materials. Films produced by conventional blow heads often have dull strips or wavy areas, the so-called spiral strips. The aim of the invention is to avoid these negative film properties. For this purpose, the blow head comprises a plurality of annular gap-shaped melt channels arranged concentrically around the center axis of the blow head, the spiral distributor of the inner melt channel being arranged on the inner limiting wall in relation to the center axis of the blow head and the spiral distributor of the outer melt channel being arranged on the outer limiting wall in relation to the center axis of the blow head.
    Type: Application
    Filed: February 12, 2007
    Publication date: July 26, 2007
    Inventors: Franz Mahler, Christian Baier, Michael Heinecker, Joachim Libowski