Patents Assigned to Whitesell of North Carolina, Inc.
  • Patent number: 6189694
    Abstract: A high temperature steam-sterilizable flexible pouch package includes a non-woven barrier web, a perforated plastic intermediate web, and an imperforate plastic upper web. Line heat seals bonding the webs form a cavity into which high temperature sterilizing steam may enter after passing through the barrier and intermediate webs. The line heat seal bonding the upper and intermediate webs is of the delamination failure type. An access opening is provided for insertion of an object to be sterilized into the cavity after which the access opening is sealed, enclosing the object in the cavity. After high temperature steam sterilizing, the package is opened by peeling apart the upper web from the intermediate web which causes a delamination failure of the line heat seal. Preferred materials enable vacuum cycle steam sterilization at a temperature of at least 270° F.
    Type: Grant
    Filed: July 8, 1999
    Date of Patent: February 20, 2001
    Assignees: Whitesell of North Carolina, Inc., American National Can Company
    Inventors: Mark E. Weiss, Thomas J. Bauer, Richard E. Johnson
  • Patent number: 6117505
    Abstract: A sterilizable flexible pouch package includes a non-woven barrier web, a perforated plastic intermediate web, and an imperforate plastic upper web. Line heat seals bonding the webs from a cavity into which a sterilizing steam may enter after passing through the barrier and intermediate webs. The line heat seal bonding the upper and intermediate webs is of the delamination failure type. An access opening is provided for insertion of an object to be sterilized into the cavity after which the access opening is sealed, enclosing the object in the cavity. After sterilizing, the package is opened by peeling apart the upper web from the intermediate web which causes a delamination failure of the line heat seal. Preferred materials enable steam sterilization at temperature of 270.degree. F.
    Type: Grant
    Filed: December 17, 1996
    Date of Patent: September 12, 2000
    Assignees: Whitesell of North Carolina, Inc., American National Can Company
    Inventors: Mark E. Weiss, Thomas J. Bauer, Richard E. Johnson
  • Patent number: 5947287
    Abstract: A high temperature steam-sterilizable flexible pouch package includes a non-woven barrier web, a perforated plastic intermediate web, and an imperforate plastic upper web. Line heat seals bonding the webs form a cavity into which high temperature sterilizing steam may enter after passing through the barrier and intermediate webs. The line heat seal bonding the upper and intermediate webs is of the delamination failure type. An access opening is provided for insertion of an object to be sterilized into the cavity after which the access opening is sealed, enclosing the object in the cavity. After high temperature steam sterilizing, the package is opened by peeling apart the upper web from the intermediate web which causes a delamination failure of the line heat seal. Preferred materials enable vacuum cycle steam sterilization at a temperature of at least 270.degree. F.
    Type: Grant
    Filed: December 17, 1996
    Date of Patent: September 7, 1999
    Assignees: Whitesell of North Carolina, Inc., American National Can Company
    Inventors: Mark E. Weiss, Thomas J. Bauer, Richard E. Johnson