Modification method of surface layer of molded resin article, and modification apparatus of surface layer of molded resin article

Abstract

An organic compound having an affinity for a resin of a molded resin article and sublimation properties is allowed to penetrate/disperse into the surface of the molded resin article, thereby modifying and/or coloring a resin surface layer. The molded resin article and the organic compound having the affinity for the resin and the sublimation properties are put into a tightly closable container, and the pressure and the temperature in the container are adjusted to place them in a saturated sublimation pressure state of the organic compound, whereby a vapor of the organic compound is uniformly deposited on the surface of the molded resin article and it further penetrates/disperses into the resin surface layer, and in consequence, the resin surface layer can be modified and/or colored. In addition, the modification of the resin surface layer permits imparting a function thereto.

1 . A modification apparatus for a resin surface layer which comprises: 
 a tightly closable first vacuum container for placing an organic compound having sublimation properties and an affinity for a resin of the molded resin article to be coated in a saturated sublimation pressure state;    a tightly closable second vacuum container for placing the molded resin article in the saturated sublimation pressure state of the organic compound;    a connection pipe for connecting the first vacuum container to the second vacuum container;    an opening/closing mechanism of the connection pipe;    an exhaust system for independently adjusting the pressure in the first vacuum container;    an exhaust system for independently adjusting a pressure in the second vacuum container; and    heating means for allowing the organic compound to penetrate/disperse into the molded resin article, after the organic compound sublimes and a vapor of the organic compound is deposited on the surface of the molded resin article.    
   
   
       2 . The modification apparatus of the resin surface layer according to  claim 1  which further contains: 
 a stirring mechanism for stirring the molded resin article of a powder form.    
   
   
       3 . The modification apparatus of the resin surface layer according to  claim 1  which further contains: 
 a wind-up mechanism for winding up the molded resin article of a form selected from a textile form, a fiber form and film form around a reception side reel from a supply side reel under reduced pressure.    
   
   
       4 . A coloring apparatus for a resin surface layer which comprises: 
 a tightly closable first vacuum container for placing a dyestuff having sublimation properties and an affinity for a resin of the molded resin article to be colored in a saturated sublimation pressure state;    a tightly closable second vacuum container for placing the molded resin article in the saturated sublimation pressure state of the dyestuff;    a connection pipe for connecting the first vacuum container to the second vacuum container;    an opening/closing mechanism of the connection pipe;    an exhaust system for independently adjusting the pressure in the first vacuum container;    an exhaust system for independently adjusting a pressure in the second vacuum container; and    heating means for allowing the dyestuff to penetrate/disperse into the molded resin article, after the dyestuff sublimes and a vapor of the dyestuff is deposited on the surface of the molded resin article.    
   
   
       5 . The coloring apparatus of the resin surface layer according to  claim 4  which further contains: 
 a stirring mechanism for stirring the molded resin article of a powder form.    
   
   
       6 . The coloring apparatus of the resin surface layer according to  claim 4  which further contains: 
 a wind-up mechanism for winding up the molded resin article of a form selected from a textile form, a fiber form and film form around a reception side reel from a supply side reel under reduced pressure.    
   
   
       7 . A resin article having a surface layer modified by a modification method comprising the steps of: 
 placing, in a closed space, an organic compound having sublimation properties and an affinity for a resin of the resin article to be coated, and the resin article;    bringing the closed space to a saturated sublimation pressure state of the organic compound;    uniformly depositing a vapor of the organic compound on the surface of the resin article; and    allowing the deposited organic compound to penetrate/disperse from the surface of the resin article into its inside.    
   
   
       8 . The molded resin article of  claim 7 , wherein the resin article is a plastic lens.  
   
   
       9 . The molded resin article of  claim 7 , wherein the resin article is a resin coat lens.  
   
   
       10 . The molded resin article of  claim 7 , wherein the resin article is a plastic film.  
   
   
       11 . The molded resin article of  claim 7 , wherein the resin article is a fiber.  
   
   
       12 . The molded resin article of  claim 7 , wherein the resin article is a plastic optical fiber.  
   
   
       13 . A resin article having a surface layer modified by a modification method comprising the steps of: 
 placing, in a closed space, an organic compound having sublimation properties and an affinity for a resin of the resin article to be coated, and the resin article;    bringing the closed space to a saturated sublimation pressure state of the organic compound;    uniformly depositing a vapor of the organic compound on the surface of the resin article; and    allowing the deposited organic compound to penetrate/disperse from the surface of the resin article into its inside;    wherein a dyestuff having the sublimation properties and the affinity for the resin of the resin article to be coated is used as the organic compound to modify and simultaneously color the surface layer of the resin article.    
   
   
       14 . The molded resin article of  claim 13 , wherein the resin article is a plastic lens.  
   
   
       15 . The molded resin article of  claim 13 , wherein the resin article is a resin coat lens.  
   
   
       16 . The molded resin article of  claim 13 , wherein the resin article is a plastic film.  
   
   
       17 . The molded resin article of  claim 13 , wherein the resin article is a fiber.  
   
   
       18 . The molded resin article of  claim 13 , wherein the resin article is a plastic optical fiber.