Container for tobacco articles, and associated pack of tobacco articles and manufacturing method

Abstract

An embodiment concerns a container for tobacco articles, each tobacco article comprising a filter; the container comprising:an outer box;an inner liner inserted in the outer box and configured to receive tobacco articles, the inner liner defining an internal surface designed to be in contact with the tobacco articles and an external surface in contact with the outer box;wherein at least one surface of the inner liner is coated with an anti-staining coating comprising a first anti-staining layer comprising ethyl cellulose to prevent or minimize staining from oily chemical substances contained in the filters of the tobacco articles.

1 . A container for tobacco articles, each tobacco article comprising a filter;
 wherein the container comprises:   an outer box;   an inner liner inserted in the outer box and configured to receive the tobacco articles, the inner liner defining an internal surface configured to be in contact with the tobacco articles and an external surface in contact with the outer box; and   wherein at least one surface of the inner liner is coated with an anti-staining coating comprising a first anti-staining layer comprising ethyl cellulose and being configured to prevent or minimise minimize staining from oily chemical substances contained in the filters of the tobacco articles.   
     
     
         2 . The container according to  claim 1 , wherein a dry weight of the anti-staining coating is comprised between 1 gsm (gams per square meter) to 5 gsm. 
     
     
         3 . The container according to  claim 1 , wherein the anti-staining coating further comprises a second anti-staining layer having substantially the same composition as the first anti-staining layer. 
     
     
         4 . The container according to  claim 1 , wherein the anti-staining layer is applied by rotogravure or flexographic printing technology. 
     
     
         5 . The container according to  claim 1 , wherein the anti-staining layer is embossed. 
     
     
         6 . The container according to  claim 1 , wherein the anti-staining layer exhibits non-sealing properties upon heating. 
     
     
         7 . The container according to  claim 1 , wherein the anti-staining coating is on an inner surface of the inner liner. 
     
     
         8 . The container according to  claim 1 , wherein the anti-staining coating is on each surface of the inner liner. 
     
     
         9 . The container according to  claim 1 , wherein the inner liner comprises paper having a basis weight of 50 gsm to 90 gsm. 
     
     
         10 . The container according to  claim 1 , wherein the inner liner comprises an aluminum and paper laminate. 
     
     
         11 . A pack of tobacco articles, the pack comprising:
 a container according to  claim 1 ; and   a plurality of tobacco articles in the container, each tobacco article comprising a filter.   
     
     
         12 . The pack according to  claim 11 , wherein each filter comprises a paper material. 
     
     
         13 . The pack according to  claim 11 , wherein each filter comprises an oily substance. 
     
     
         14 . A manufacturing method of a container according to  claim 1 , the method comprising:
 a first coating step comprising applying a first anti-staining layer on a sheet to form the inner liner;   an assembling step comprising assembling the outer box and the inner liner to form the container.   
     
     
         15 . The manufacturing method according to  claim 14 , further comprising a second coating step comprising applying a second anti-staining layer on the first anti-staining layer. 
     
     
         16 . The manufacturing method according to  claim 15 , wherein the second anti-staining layer is applied by rotogravure or flexographic printing technology. 
     
     
         17 . The manufacturing method according to  claim 14 , wherein the first anti-staining layer is applied by rotogravure or flexographic printing technology. 
     
     
         18 . The manufacturing method according to  claim 14 , wherein the first anti-staining layer is applied on each surface of the sheet. 
     
     
         19 . The manufacturing method according to  claim 14 , further comprising embossing the inner liner. 
     
     
         20 . The manufacturing method according to  claim 14 , wherein a dry weight of the first anti-staining layer is 1 gsm to 5 gsm.