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US 12,515,378 B2Granted
Method of making articles from recyclable fabrics
AssigneeLubrizol Advanced Materials, Inc.
InventorsLalith B. Suragani Venu, Ravi R. Vedula, Christopher A. Sprague, Brandon Walton
Life of this patent
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Abstract
The invention relates to a method of making an article by recycling a disperse dyed fabric. The fabric is made from a melt-spun thermoplastic polyurethane fiber which contains a co-polymer diol derived from caprolactone monomer and a polyether polyol. The fabric is shredded and then thermally treated to form granules, which can be melted in an extruder to form an article.
Claims23
A method of making an article comprising:
- (1) providing a disperse dyed fabric comprising a melt-spun thermoplastic polyurethane fiber, wherein the fiber comprises the reaction product of (a) a reactive thermoplastic polyurethane composition comprising (i) a polyol component, wherein the polyol component comprises a co-polymer diol derived from caprolactone monomer and a polyether polyol, (ii) a hydroxyl terminated chain extender component, and (iii) a first diisocyanate component;
- and (b) an isocyanate functional prepolymer crosslinker;
- (2) shredding the fabric;
- (3) thermally treating the shredded fabric to form granules;
- (4) melting and shearing the granules in an extruder to form an article.
2 more elements
A method of making an article comprising the steps of:
- (1) providing a disperse dyed fabric comprising (i) a first fiber component is a thermoplastic hard yarn having 10% to 200% ultimate elongation measured according to ASTM D2256 and (ii) a second fiber component comprising a melt-spun thermoplastic polyurethane fiber having at least 300% ultimate elongation measured according to ASTM D2731, wherein the first fiber component and the second fiber component are knitted together for form the fabric and wherein the fabric is dyed at a temperature of at least 130° C.;
- (2) shredding the fabric;
- (3) thermally treating the shredded fabric to form granules;
- and
- (4) melting and shearing the granules in an extruder to form an article.
2 more elements
Dependencies are inferred from the claim text.