ApplicationNo. 222771 filed on 04/04/1994
US Classes:428/219, Weight per unit area specified28/103, Fiber entangling and interlocking28/104, By fluid jet needling or perforating28/105, Through backing and support members28/112, With treatment28/167, By fluid contact428/220, Physical dimension specified428/326, Cellulosic (e.g., wood, paper, cork, rayon, etc.)428/903, MICROFIBER (LESS THAN 100 MICRON DIAMETER)442/408, Hydroentangled nonwoven fabric442/411Containing at least two chemically different strand or fiber materials
ExaminersPrimary: Bell, James J.
Attorney, Agent or Firm
Foreign Patent References
International ClassD04H 001/04
AbstractDisclosed is a hydraulically entangled, autogenous-bonding, nonwoven composite fabric composed of a matrix of substantially continuous, thermoplastic polymer filaments and at least one substantially non-thermoplastic fibrous material integrated in the matrix so that the composite fabric is adapted to autogenously bond to itself upon application of heat. The hydraulically entangled, autogenous-bonding, nonwoven composite fabric may be suitable as infusion package material for applications such as, for example, tea bags and coffee filter pouches. Also disclosed is a method of making a hydraulically entangled, autogenous-bonding, nonwoven composite fabric.
Field of SearchBy fluid jet needling or perforating
Through backing and support members
Fiber entangling and interlocking
By fluid contact
Cellulosic (e.g., wood, paper, cork, rayon, etc.)
Weight per unit area specified
Physical dimension specified
MICROFIBER (LESS THAN 100 MICRON DIAMETER)