Double-sided tape for touch screen panel and manufacturing method thereof

Abstract

Provided is a double-sided tape for a touch screen panel which comprises a shock resistant filler layer to exhibit excellent viscosity while being thin and have excellent shock resistance and an excellent waterproof property, and a manufacturing method.

What is claimed is: 
     
         1 . A double-sided tape for a touch screen panel, comprising:
 a base film;   a shock resistant filler layer formed on the base film and comprising acrylic binder and an shock resistant filler containing 5-60 parts by weight with respect to 100 parts by weight of the acrylic binder;   first and second adhesive layers formed an upper side of the shock resistant filler layer and a lower side of the base film, respectively; and   a release layer formed on a lower side of the second adhesive layer,   wherein the shock resistant filler of the shock resistant filler layer comprises a plurality of hollow fine particles.   
     
     
         2 . The double-sided tape of  claim 1 , wherein the hollow fine particles comprise a first coating film formed of a thermoplastic material containing 15-40 parts by weight of a monomer, with respect to a total of 100 parts by weight, and having a hollow part. 
     
     
         3 . The double-sided tape of  claim 1 , wherein the hollow fine particles further comprise a second coating film containing 50-80 parts by weight of calcium carbonate, with respect to a total of 100 parts by weight, and arranged along a circumference of the first coating film. 
     
     
         4 . The double-sided tape of  claim 1 , wherein the monomer of the first coating film is a copolymer comprising at least one of 15-40 parts by weight of acrylonitrile, with respect to 100 parts by weight of the hollow fine particles, phosphate methacrylate and alkali strippable polyester acrylate. 
     
     
         5 . The double-sided tape of  claim 1 , wherein at least one of the base film and the shock resistant filler layer may turn black using a black coloring agent, and the black coloring agent comprises at least one of carbon black and iron sulfide. 
     
     
         6 . The double-sided tape of  claim 1 , wherein the hollow fine particles comprise:
 liquid hydrocarbon comprising 1-10 parts by weight of 2-methyl butane and 1-10 parts by weight of 2-methyl propane, with respect to a total of 100 parts by weight;   a first coating film formed of a thermoplastic material comprising a copolymer containing at least one of 15-40 parts by weight of acrylonitrile, phosphate methacrylate, alkali strippable polyester acrylate, and formed to surround the liquid hydrocarbon; and   a second coating film formed of 50-80 parts by weight of calcium carbonate, and formed to surround the first coating film.