Swelling And Stretching Patents (Class 8/DIG3)
  • Copy paper
    Patent number: 4098947
    Abstract: A sheet of paper suitable as a multi-copy paper or once only copy paper is made by coating with a layer of finely particulate mutually adherent particles of a vinyl chloride polymer if pigments are used as colouring matter and of any swellable polymer if a dyed layer is to be used. Generally, the particulate material is swelled using suitable swelling agents and applied to a support layer by any suitable coating process.
    Type: Grant
    Filed: February 20, 1975
    Date of Patent: July 4, 1978
    Inventors: Joachim Schmidt, Martin Unruh
  • Surface modified continuous filament yarn and method of producing same
    Patent number: 4086055
    Abstract: A surface modified continuous filament yarn and method for producing same is provided wherein a continuous filament twisted yarn is stretched and, while in its stretched or elongated state, contacted with an effective amount of a swelling agent for a period of time effectively to substantially rupture fibers on the surface of the elongated yarn without effecting interior fibers of the yarn, thereafter quenching the swelling agent and recovering a modified continuous filament yarn.
    Type: Grant
    Filed: October 4, 1976
    Date of Patent: April 25, 1978
    Assignee: Milliken Research Corporation
    Inventor: Francis William Marco
  • Dyeing novoloid fibers with disperse dyes
    Patent number: 3942947
    Abstract: Compositions are disclosed for dyeing cross-linked novolac fibers, and blends thereof, using disperse dyes.
    Type: Grant
    Filed: September 19, 1974
    Date of Patent: March 9, 1976
    Assignee: The Carborundum Company
    Inventors: James Economy, George Y. Lei