Patents

Films, Compositions and Processes

November 29, 2005

An oriented polymeric film has been patented. It comprises at least one layer with a first material that is very highly crystalline polypropylene homopolymer (VHCPP), which has a very high intermolecular stereoregularity consisting of at least about 98% of isotactic polymer. The remainder of the material (if any) is atactic polymer. A second material comprises at least one polymer having a ring and ball softening point from 110° C. to 170° C. and/or a nucleating agent. The second material may also include at least two second materials comprising hydrogenated hydrocarbon resin(s) of different types and/or nucleating agent(s). The second material is added in an amount sufficient for the film to exhibit two or more of the following properties measured in any direction parallel to the film surface and, where necessary, normalized for a 20 micron thick film: WVTR less than about 6 g/24 hours/m2; OTR less than about 1,500 cm3/24 hours/m2; Young’s modulus from 4000 MPa to 5000 MPa, Flexural modulus from 0.4 N (mm2) to 0.7 N (mm2); haze less than about 1.1%; and/or a clarity greater than 97%.
  • The Year That Was 2016

    The Year That Was 2016

    Karen McIntyre, Editor||December 1, 2016
    The year 2016 included investments, new product development and an entrepreneurial spirit in nonwovens that will surely impac

  • The Automotives Market

    The Automotives Market

    Tara Olivo, Associate Editor||December 1, 2016
    Nonwovens continue to replace other materials in cars and automotive components.

  • Hygiene Components Suppliers Respond to Change

    Hygiene Components Suppliers Respond to Change

    Karen McIntyre, Editor||December 1, 2016
    Growth and diversification in adult incontinence and new players in the baby diaper market force makers of adhesives, elastic