US2019169793A1PendingUtilityA1

Anti-fray formulation for aramid yarns

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Individually held — no corporate assignee on recordPriority: Dec 4, 2017Filed: Dec 4, 2017Published: Jun 6, 2019
Est. expiryDec 4, 2037(~11.3 yrs left)· nominal 20-yr term from priority
Inventors:Torsten D. QuinlanPatrick E. Hawks
D06M 2101/36D06M 11/59D06M 13/288D06M 11/79D06M 15/564D06M 23/18D06M 11/60D06M 2200/35
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Claims

Abstract

A textile formulation for treating woven fabrics formed from aramid filament yarns that results in a resistance to the unraveling, fraying, and slipping of seams typical of fabrics formed from filament yarns is disclosed. This anti-fray formulation includes colloidal silica, polyurethane dispersion, and phosphonate combined to form a chemical bath in which the woven fabric may be dipped. This formulation adds 2%-5% to the dry weight of the woven fabric, and does not impact the beneficial properties of fabrics formed from filament yarns such as structural stability or flame retardancy, but does create a fabric that is more resistant to the unraveling, fraying, and slipping of seams. A method of creating a textile formed from aramid filament yarns exposed to an anti-fray formulation including colloidal silica, polyurethane dispersion, and phosphonate that does not impact the beneficial properties of fabrics formed from filament yarns such as structural stability or flame retardancy, but does create a fabric that is more resistant to the unraveling, fraying, and slipping of seams, is also provided.

Claims

exact text as granted — not AI-modified
We claim: 
     
         1 . A fabric formulation comprised of an effective amount of silica, an effective amount of polyurethane, and an effective amount of phosphonate, wherein the formulation defines a weight and is administered to a fabric to reduce incidence of fraying, unraveling, or slipping at one or more fabric seams. 
     
     
         2 . The fabric formulation of  claim 1 , wherein the silica is defined as colloidal silica. 
     
     
         3 . The fabric formulation of  claim 2 , wherein the effective amount of colloidal silica is defined as an amount between 25 and 90 grams by formulation weight. 
     
     
         4 . The fabric formulation of  claim 3 , wherein the effective amount of colloidal silica is defined as an amount between 50 and approximately 70 grams (+/−1 gram) by formulation weight. 
     
     
         5 . The fabric formulation of  claim 1 , wherein the polyurethane is defined as a polyurethane dispersion. 
     
     
         6 . The fabric formulation of  claim 5 , wherein the effective amount of polyurethane dispersion is defined as an amount between 80 grams and 120 grams by formulation weight. 
     
     
         7 . The fabric formulation of  claim 6 , wherein the effective amount of polyurethane dispersion is defined as an amount between 90 and approximately 100 grams (+/−1 gram) by formulation weight. 
     
     
         8 . The fabric formulation of  claim 1 , wherein the effective amount of phosphonate is defined as an amount between 30 and 60 grams by formulation weight. 
     
     
         9 . The fabric formulation of  claim 8 , wherein the effective amount of phosphonate is defined as approximately 50 grams (+/−1 gram) by formulation weight. 
     
     
         10 . The fabric formulation of  claim 1 , wherein the fabric is formed primarily from filament yarns. 
     
     
         11 . The fabric formulation of  claim 10 , wherein the filament yarns are defined by an aramid material. 
     
     
         12 . The fabric formulation of  claim 11 , wherein the aramid material is defined as meta-aramid. 
     
     
         13 . The fabric formulation of  claim 1  further comprising a predetermined amount of water. 
     
     
         14 . The fabric formulation of  claim 1  further comprising a wetting agent. 
     
     
         15 . The fabric formulation of  claim 1  further comprising a cross-linking compound. 
     
     
         16 . The fabric formulation of  claim 1  further comprising ammonium hydroxide. 
     
     
         17 . A method of forming a textile formed from filament yarns that is resistant to fraying, unraveling, and slipping at one or more seams, the method comprising,
 weaving the filament yarns into the textile,   providing a formulation comprising at least an effective amount of phosphonate, silica, and polyurethane,   exposing the textile to the formulation, and   curing the textile.   
     
     
         18 . The method of  claim 17 , wherein,
 the filament yarns are defined by a meta-aramid material,   the phosphonate is defined as phosphonate,   the silica is defined as colloidal silica, and   the polyurethane is defined as a polyurethane dispersion.

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