Flexible container for products to be kept separate and mixed before use

Abstract

A flexible container for products to be kept separate and mixed before use, made of single-layer or multi-layer plastic material comprising two compartments ( 11, 12 ), intended to contain respective products which are kept separate and mixed before use by breaking a line of separation between said compartments, in which the line of separation is obtained by means of a strip ( 15 ) of easy-open material interposed between the walls ( 13, 14 ) of the container and extending from one side to the other thereof, so that a weld made along said strip ( 15 ) is not permanent, but can be broken upon exceeding a certain force.

1 . A flexible container for products which are to be kept separate and mixed before use, said container ( 10 ) being made by means of peripheral welds ( 16 ,  17 ,  20 ,  21 ) of sheets or walls ( 13 ,  14 ) of single-layer or multi-layer plastic material, and comprising at least two compartments ( 11 ,  12 ), kept separate from one another, able to contain respective distinct products, characterized in that the separation between said compartments ( 11 ,  12 ) is obtained at least in part by means of a strip ( 15 ) of easy-open material interposed between said walls ( 13 ,  14 ) of the container ( 10 ), such that a weld along said strip ( 15 ) is not permanent and is breakable at the time of use to allow mixing of said products.  
     
     
         2 . A container according to    claim 1   , characterized in that said strip of easy-open material ( 15 ), partially involves said line of separation between the compartments ( 11 ,  12 ).  
     
     
         3 . A container according to    claim 1   , characterized in that said strip of easy-open material ( 15 ) involves said line of separation between the compartments ( 11 ,  12 ) on the inside and extends between two opposite edges of the container.  
     
     
         4 . A container according to    claim 3   , characterized in that said container ( 10 ) has a substantially rectangular plan and said strip ( 15 ) of easy-open material extends for the entire length of a side of said rectangle, from one end to the other thereof.  
     
     
         5 . A container according to    claim 4   , characterized in that at the ends of said strip ( 15 ) of easy-open material respective triangular welds ( 22 ,  23 ) are provided between the walls ( 13 ,  14 ) of the container, joining respective portions ( 16 ,  17 ) of said peripheral weld of the container to said strip ( 15 ), so as to avoid possible loss of the tight seal at the ends of said strip ( 15 ) of easy-open material.  
     
     
         6 . A container according to any one of the preceding claims, characterized in that said strip ( 15 ) of easy-open material is preferably of the same material as the inner layer of said walls ( 13 ,  14 ) of the container, suitably modified to make the subsequent weld less strong, in particular polyethylene or modified polypropylene.  
     
     
         7 . A container according to any one of the preceding claims, characterized in that said compartments ( 11 ,  12 ) have respective openings ( 18 ,  19 ) at opposite head ends of the container, for filling with the respective products, before making the corresponding peripheral closing welds ( 20 ,  21 ).  
     
     
         8 . A container according to any one of    claims 1    to    6   , characterized in that said compartments ( 11 ,  12 ) have respective openings ( 18 ′,  19 ′) on a same side of said container ( 10 ), for filling with the respective products, before a corresponding peripheral closing weld ( 17 ) is made.