Container for product with less packaging material

Abstract

The invention concerns a container comprising a body formed by walls and a bottom having in his greater section a dimension d 1 and a neck with an internal diameter d 2, said container being made from a semi-crystalline PET, the body of said container comprising at its bottom at least three feet spaced from each other and being integral with said body, wherein for the body, the ratio weight of the walls on weight of the bottom is comprised between 3 and 4 and wherein the ratio volume of the body of the container per gram of PET of the body is comprised between 80 and 120.

1 . A container comprising a body formed by walls and a bottom having in its greater section a dimension d] and a neck with an internal diameter d 2 , said container being made from a semi-crystalline PET, the body of said container comprising at its bottom at least three feet spaced from each other and being integral with said body, the ratio weight of the walls to the weight of the bottom is between 3 and 4 and the ratio volume of the body of the container per gram of PET of the body is between 80 and 120.  
     
     
         2 . A container according to  claim 1 , wherein the walls of the body have a thickness of less than 100 μm.  
     
     
         3 . A container according to  claim 1 , wherein the neck has a wall thickness of between 150 and 250 μm.  
     
     
         4 . A container according to  claim 1 , wherein each foot has a wall thickness of between 50 and 150 μm.  
     
     
         5 . A container according to  claim 1 , wherein the part of the bottom between the feet has a greater thickness than that of the walls.  
     
     
         6 . A packaging assembly comprising: 
 a container comprising a body formed by walls having in its greater section a dimension d 1  and a neck with an internal diameter d 2 , said container being made from a semi-crystalline PET, the body of said container comprising at its bottom at least three feet spaced from each other and being integral with said body, the ratio weight of the walls on weight of the bottom is between 3 and 4 and wherein the ratio volume of the body of the container per gram of PET of the body is between 80 and 120;    a product in the containers; and    closing means for closing off or distributing the product from the neck,    the filled container being substantially incompressible by hand when filled with the product.    
     
     
         7 . A packaging assembly according to  claim 6 , wherein the product is selected from the group consisting of pasty, liquid, semi-liquid, granular and powdered product.  
     
     
         8 . A packaging assembly according to  claim 6 , wherein said assembly has a high resistance to vertical and/or transverse loads allowing good resistance to transportation.  
     
     
         9 . A packaging assembly according to  claim 8 , wherein said assembly supports a vertical and/or transverse loading of more than about 100 kg for a container having a weight of about 4 g.  
     
     
         10 . A packaging assembly according to  claim 4 , wherein the body of the container has a form selected from the group consisting of a three dimensional shape convenient for gripping, an ovoid, spherical, elliptical and cylindrical shape.  
     
     
         11 . A packaging assembly according to  claim 4 , wherein the wall thickness of the body, substantially in the middle of its body is between 30 and 70 μm.  
     
     
         12 . A packaging assembly according to  claim 4 , wherein the container comprises on its outside a printing made by pad printing.  
     
     
         13 . A packaging assembly according to  claim 4 , wherein the ratio d2 on d1 is between 1:3 and 1:10.  
     
     
         14 . A packaging assembly according to  claim 4 , wherein the ratio height of the neck on the height of the body is between 1:1 and 1:4.  
     
     
         15 . A packaging assembly according to  claim 4 , wherein the ratio weight of the walls on weight of the bottom is comprised between 3.4 and 3.8.  
     
     
         16 . A packaging assembly according to  claim 4 , wherein the ratio volume of the body of the container per gram of PET of the body is comprised between 90 and 110.  
     
     
         17 . A process for manufacturing the container comprising a body formed by walls and a bottom having in its greater section a dimension d 1  and a neck with an internal diameter d 2 , said container being made from a semi-crystalline PET, the body of said container comprising at its bottom at least three feet spaced from each other and being integral with said body, the ratio weight of the walls to the weight of the bottom is between 3 and 4 and the ratio volume of the body of the container per gram of PET of the body is between 80 and 120 wherein said container is obtained by stretch blow forming of a PET preform with high stretch index in comparison with the classical stretching of a preform.  
     
     
         18 . A packaging assembly according to  claim 6 , wherein the body of the container has a form selected from the group consisting of a three dimensional shape convenient for gripping, an ovoid, spherical, elliptical and cylindrical shape.  
     
     
         19 . A packaging assembly according to  claim 6 , wherein the wall thickness of the body, substantially in the middle of its body is between 30 and 70 μm.  
     
     
         20 . A packaging assembly according to  claim 6 , wherein the container comprises on its outside a printing made by pad printing.  
     
     
         21 . A packaging assembly according to  claim 6 , wherein the ratio d2 on d1 is between 1:3 and 1:10.  
     
     
         22 . A packaging assembly according to  claim 6 , wherein the ratio height of the neck on the height of the body is between 1:1 and 1:4.  
     
     
         23 . A packaging assembly according to  claim 6 , wherein the ratio weight of the walls on weight of the bottom is comprised between 3.4 and 3.8.  
     
     
         24 . A packaging assembly according to  claim 6 , wherein the ratio volume of the body of the container per gram of PET of the body is comprised between 90 and 110.