Patents by Inventor R. William Fowells

R. William Fowells 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).

  • Method of making spunbonded webs from linear low density polyethylene
    Patent number: 4644045
    Abstract: Spunbonded nonwoven webs having excellent properties, particularly softness, can be made from linear low density polyethylene having a critical combination of certain key properties. These properties are percent crystallinity, cone die melt flow, die swell, relation of die swell to melt index, and polymer uniformity. The polyethylene is extruded through a spinneret at a temperature between about 185.degree. and 215.degree. C. and drawn through an air gun to form the spunbonded web.
    Type: Grant
    Filed: March 14, 1986
    Date of Patent: February 17, 1987
    Assignee: Crown Zellerbach Corporation
    Inventor: R. William Fowells