Eco-friendly activator-free water transfer printing film and method of printing the same

Abstract

An eco-friendly activator-free water transfer printing film and its transfer printing method are disclosed. The method includes the steps of: laying a superabsorbent film on a water surface; laying a hydrophilic material on a surface of the superabsorbent film to form a hydrophilic layer, and the hydrophilic material includes an information object, or coated with an information object; absorbing water to soften an end surface of the superabsorbent film contacting with the water surface, and crosslinking the other end surface of the superabsorbent film to the hydrophilic layer; pushing a transfer object towards the hydrophilic layer in water, so that the hydrophilic layer and the superabsorbent film are transferred and printed onto the transfer object. Therefore, the water transfer printing process can be achieved without using any activator to avoid environmental pollutions and prevent jeopardizing human beings or deforming transfer printing patterns.

What is claimed is: 
     
         1 . An eco-friendly activator-free water transfer printing film, comprising:
 a superabsorbent film, with high water absorbability, made of polyvinyl alcohol (PVA), and including a PVA emulsion resin and a surfactant;   a hydrophilic layer, laid on the superabsorbent film, for crosslinking an end surface of the superabsorbent film to the hydrophilic layer after the other end surface of the superabsorbent film absorbs water to become softened, and the hydrophilic layer mainly including polyvinylpyrrolidone (PVP); and   an information object, laid on the hydrophilic layer, and the information object being a hydrophilic object.   
     
     
         2 . The eco-friendly activator-free water transfer printing film according to  claim 1 , wherein the information object is an ink spread into the hydrophilic layer. 
     
     
         3 . The eco-friendly activator-free water transfer printing film according to  claim 2 , wherein the information object is a hydrophilic water masterbatch. 
     
     
         4 . The eco-friendly activator-free water transfer printing film according to  claim 1 , wherein the information object is layer-shaped and coated onto an end of the hydrophilic layer relative to the superabsorbent film. 
     
     
         5 . The eco-friendly activator-free water transfer printing film according to  claim 4 , wherein the information object is a laser coating with a metal material. 
     
     
         6 . A transfer printing method of an eco-friendly activator-free water transfer printing film applied to the eco-friendly activator-free water transfer printing film as claimed in  claim 1 , comprising the steps of:
 laying the superabsorbent film on a water surface;   laying a hydrophilic material including the information object on an upper surface of the superabsorbent film to form the hydrophilic layer;   letting the hydrophilic layer stand still to absorb water to soften an end surface of the superabsorbent film that is in contact with the water surface, and crosslinking the other end surface of the superabsorbent film to the hydrophilic layer;   pushing a transfer object towards the hydrophilic layer in water, so that the hydrophilic layer and the superabsorbent film are transferred to the transfer object.   
     
     
         7 . A transfer printing method of an eco-friendly activator-free water transfer printing film applied to the eco-friendly activator-free water transfer printing film as claimed in  claim 1 , comprising the steps of:
 laying the superabsorbent film on a water surface;   laying a hydrophilic material on an upper surface of the superabsorbent film to form the hydrophilic layer, and spreading the information object to an end of the hydrophilic layer relative to the hydrophilic layer, so that the information object in a layer shape is coated onto the top of the hydrophilic material;   letting the hydrophilic material stand still, so that the superabsorbent film absorbs water to soften the end surface which is in contact with the water surface, and crosslinking the other end surface to the hydrophilic layer; and   pushing a transfer object towards the hydrophilic layer in water, so that the hydrophilic layer and the superabsorbent film are transferred to the transfer object.