Patents Assigned to PNC Company
  • Manufacturing a thermoplastic non-woven web comprising coherently interconnected filaments
    Patent number: 4301203
    Abstract: A thermoplastic web of indeterminate length is provided by forming a tubular thermoplastic web having interconnected filaments. The web is rotated about its axis while being advanced along its axis and is slit so as to provide a web having substantially parallel filament alignment at an angle to the longitudinal axis of the web. The web may be formed into a multiply structure having a plurality of webs wherein the filament alignment of at least one of the webs of the structure is at an angle to the filament alignment of at least one of the other webs of the structure.
    Type: Grant
    Filed: February 29, 1980
    Date of Patent: November 17, 1981
    Assignee: PNC Company
    Inventor: Herbert W. Keuchel
  • Process and apparatus for manufacturing a non-woven fabric and the product thereof
    Patent number: 4227957
    Abstract: A thermoplastic web of indeterminate length is provided by forming a tubular thermoplastic web having interconnected filaments. The web is rotated about its axis while being advanced along its axis and is slit so as to provide a web having substantially parallel filament alignment at an angle to the longitudinal axis of the web. The web may be formed into a multiply structure having a plurality of webs wherein the filament alignment of at least one of the webs of the structure is at an angle to the filament alignment of at least one of the other webs of the structure.
    Type: Grant
    Filed: July 27, 1978
    Date of Patent: October 14, 1980
    Assignee: PNC Company
    Inventors: Herbert W. Keuchel, George A. Farris
  • Process and apparatus for manufacturing a non-woven fabric and the product thereof
    Patent number: 4141773
    Abstract: A thermoplastic web of indeterminate length is provided by forming a tubular thermoplastic web having interconnected filaments. The web is rotated about its axis while being advanced along its axis and is slit so as to provide a web having substantially parallel filament alignment at an angle to the longitudinal axis of the web. The web may be formed into a multiply structure having a plurality of webs wherein the filament alignment of at least one of the webs of the structure is at an angle to the filament alignment of at least one of the other webs of the structure.
    Type: Grant
    Filed: February 24, 1977
    Date of Patent: February 27, 1979
    Assignee: PNC Company
    Inventor: Herbert W. Keuchel
  • Fibrillated textile structure and process of producing same
    Patent number: 3950582
    Abstract: An oriented thermoplastic sheet is pleated and an adhesive and backing is applied to one face thereof. The other face is then pleat fibrillated to a desired depth. Both faces may have adhesive and backing applied thereto with the structure being centrally cut parallel to the faces. The extending edges of the sheets on the two structures are then fibrillated to a desired depth.
    Type: Grant
    Filed: August 23, 1973
    Date of Patent: April 13, 1976
    Assignee: PNC Company
    Inventor: Herbert W. Keuchel