Hydraulically entangled, autogenous-bonding, nonwoven composite fabric
Patent 5573841 Issued on November 12, 1996. Estimated Expiration Date: 
April 4, 2014. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
April 4, 2014. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesInventorsAssigneeApplicationNo. 222771 filed on 04/04/1994US 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 materialsExaminersPrimary: Bell, James J.Attorney, Agent or FirmForeign Patent References
International ClassD04H 001/04AbstractDisclosed 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 perforatingThrough backing and support members Fiber entangling and interlocking With treatment By fluid contact Flock surface Cellulosic (e.g., wood, paper, cork, rayon, etc.) Weight per unit area specified Physical dimension specified MICROFIBER (LESS THAN 100 MICRON DIAMETER) | |
