Thermal transfer method and system for blended fabrics and related blended fabric and items

Abstract

A thermal transfer method for blended fabrics and related system, blended fabric and items comprising the blended fabric are described. The thermal transfer method comprises: printing a designed pattern on a thermal transfer paper with a digital printer to obtain the thermal transfer paper having the pattern; mixing one or more epoxy resins, with one or more polyamine and solvent to prepare a pretreatment liquid; immersing a blended fabric in the pretreatment liquid, then being subject to pressing and drying to obtain a treated blended fabric; attaching the thermal transfer paper having the pattern to the treated blended fabric to obtain a thermal transfer paper attached to the treated blended fabric, and then performing a thermal pressure treatment of the thermal transfer paper attached to the treated blended fabric to obtain a thermally transferred blended fabric.

1 . A thermal transfer method for blended fabric, the method comprising
 treating to obtain at treated blended fabric, the treating comprising contacting the blended fabric with a pretreatment liquid comprising an epoxy resin a polyamine and a solvent,   performing thermal transfer of a dye to the treated blended fabric.   
     
     
         2 . The thermal transfer method for blended fabrics according to  claim 1 , wherein treating further comprises pressing and drying the blended fabric following the contacting. 
     
     
         3 . The thermal transfer method for blended fabrics according to  claim 1 , further comprising before the contacting
 preparing the pretreatment liquid by dispersing epoxy resin and polyamine with a solvent.   
     
     
         4 . The thermal transfer method for blended fabrics according to  claim 1 , wherein performing thermal transfer of the dye to the treated blended fabric comprises
 providing a thermal transfer paper having a pattern formed by the dye   attaching the thermal transfer paper having the pattern to the treated blended fabric to obtain a thermal transfer paper attached to the treated blended fabric, and   performing a thermal pressure treatment of the thermal transfer paper attached to the treated blended fabric to obtain a thermally transferred blended fabric.   
     
     
         5 . The thermal transfer method for blended fabrics according to  claim 4 , wherein the providing is performed by
 printing the day on a thermal transfer paper to form a pattern on the thermal transfer paper, thus obtaining the thermal transfer paper having the pattern.   
     
     
         6 . The thermal transfer method for blended fabrics according to  claim 1 , further comprising providing the blended fabric by blending a synthetic fiber and a natural fiber. 
     
     
         7 . The thermal transfer method for blended fabrics according to  claim 1 , comprising:
 a) printing the day to form a designed pattern on a thermal transfer paper to obtain the thermal transfer paper having the pattern;   b) dispersing epoxy resin and polyamine with a solvent to prepare a pretreatment liquid;   c) immersing a blended fabric in the pretreatment liquid, pressing and drying the blended fabric following the immersing, to obtain a treated blended fabric;   d) attaching the thermal transfer paper having the pattern of step a) to the treated blended fabric in step c) to obtain a thermal transfer paper attached to the treated blended fabric, and then performing a thermal pressure treatment of the thermal transfer paper attached to the treated blended fabric to obtain a thermally transferred blended fabric.   
     
     
         8 . The thermal transfer method according to  claim 1 , wherein the epoxy resin comprises bisphenol A type epoxy resin and/or bisphenol F type epoxy resin. 
     
     
         9 . The thermal transfer method according to  claim 1 , wherein the polyamine is selected from the group consisting of polyetheramine, 1,6-hexanediamine, 1,8-octanediamine, 1,4-butanediamine, 1,3-propanediamine and ethylenediamine. 
     
     
         10 . The thermal transfer method s according to  claim 1 , wherein a mass ratio of the epoxy resin and the polyamine in step b) ranges from 1:1 to 5:1. 
     
     
         11 . The thermal transfer method s according to  claim 1 , wherein the blended fabric comprises or consists of a synthetic fiber and a natural fiber. 
     
     
         12 . The thermal transfer method according to  claim 2 , wherein a temperature of the drying ranges from 140° C. to 200° C., and a time of the drying is ranges from 1 min to 10 mins. 
     
     
         13 . The thermal transfer method for blended fabrics according to  claim 2 , wherein the treating further comprises, following the drying baking, and washing the blended fabric with hot water; a temperature of the baking is 50° C. to 80° C., and a temperature of the hot water ranges from 60° C. to 100° C. 
     
     
         14 . The thermal transfer method for blended fabrics according to  claim 4 , wherein the thermal pressure treatment is performed by contacting a hot-pressing plate or a hot roller with the thermal transfer paper attached to the treated blended fabric. 
     
     
         15 . The thermal transfer method for blended fabrics according to  claim 14 , wherein a temperature of the thermal pressure treatment ranges from 200° C. to 230° C., and a time of the thermal pressure treatment ranges from 10 s to 30 s. 
     
     
         16 . A thermal transfer system comprising at least one pretreatment liquid in combination with at least one of a dye, a thermal transfer paper, and a blended fabric, wherein the at least one pretreatment liquid comprises an epoxy resin a polyamine and a solvent. 
     
     
         17 . A blended fabric prepared by the thermal transfer method for blended fabrics according to  claim 1 . 
     
     
         18 . A fabric item comprising the blended fabric of  claim 17 .