Plastic container with snap lid

Abstract

A plastic container with a snap lid and with a snap element provided on an upper edge area of the container for the lid to snap onto, where the lid being snapped onto the container has an area that comes into tight contact with the upper edge area of the container, the areas of the lid and of the container cooperating under tight contact generate a sealing region. The object of the invention is to design a plastic container with snap lid, which reliably fulfils special demands on leak-proofness. To this end, the sealing region between the container and the lid is provided with a circumferential seal made of a material of greater elasticity than the container and the lid and in that the seal is integrally moulded on at least one of the cooperation areas of the lid and of the container generating the sealing region. The seal can be located in a circumferential groove in the lid. The seal can have two sealing regions spaced apart that are at different angles to the main axis of the container, where the container and/or lid has areas that provide for tight contact on the sealing regions. The container and the seal are provided with elevations in the form of ribs which come into contact when the lid is on. At the height of the seal, the outer flank of the groove on the lid laterally contacts the outside of the container.

1 . Plastic container with a snap lid and with a snap element provided on an upper edge area of the container for the lid to snap onto, where the lid being snapped onto the container has an area that comes into tight contact with the upper edge area of the container, the areas of the lid and of the container cooperating under tight contact generate a sealing region, characterised in that the sealing region between the container and the lid is provided with a circumferential seal made of a material of greater elasticity than the container and the lid and in that the seal is integrally moulded on at least one of the cooperation areas of the lid and of the container generating the sealing region.  
     
     
         2 . Container as per  claim 1 , characterised in that the lid has a circumferential groove with a base and with outer and inner flanks to receive the top edge of the container and in that the seal is located in the groove.  
     
     
         3 . Container as per  claim 1 , characterised in that the container has a main axis and the seal has two sealing regions spaced apart that are at different angles to the main axis of the container, and in that in the snapped-on state of the lid both sealing regions of the seal are in tight contact with at least one of the areas of the lid and of the container cooperating under tight contact generating the sealing region.  
     
     
         4 . Container as per  claim 3 , characterised in that the seal has an area that is arranged radially inward relative to the top edge of the container and slopes downward towards the inside of the container, the radially inwardly seal area contacts at least one of the areas of the lid and of the container cooperating under tight contact generating the sealing region.  
     
     
         5 . Container as per  claims 1  to  4 , characterised in that the seal has at least one circumferential sealing rib projecting towards the container edge that tightly contacts the upper region of the container.  
     
     
         6 . Container as per  claim 1 , characterised in that the container has a main axis and the seal has two sealing regions spaced apart that are at different angles to the main axis of the container, and in that in the snapped-on state of the lid both sealing regions of the seal are in tight contact with at least one of the areas of the lid and of the container cooperating under tight contact generating the sealing region, and in that the seal has at least one circumferential sealing rib projecting towards the container edge that tightly contacts the upper region of the container.  
     
     
         7 . Container as per  claim 1 , characterised in that at least one circumferential rib that contacts the seal is provided on the container, opposite the seal.  
     
     
         8 . Container as per  claim 1 , characterised in that the container has a main axis and the seal has two sealing regions spaced apart that are at different angles to the main axis of the container, and in that in the snapped-on state of the lid both sealing regions of the seal are in tight contact with at least one of the areas of the lid and of the container cooperating under tight contact generating the sealing region and that at least one circumferential rib that contacts the seal is provided on the container, opposite the seal.  
     
     
         9 . Container as per  claim 7 , characterised in that the container and the seal are provided with elevations in the form of ribs which are each positioned relative to one another such that the elevations on the container and the seal come into contact when the lid is on.  
     
     
         10 . Container as per  claim 8 , characterised in that the container and the seal are provided with elevations in the form of ribs which are each positioned relative to one another such that the elevations on the container and the seal come into contact when the lid is on.  
     
     
         11 . Container as per  claim 1 , characterised in that, at the height of the seal, the outer flank of the groove accommodating the seal on the lid laterally contacts the outside of the container in the region of the top edge of the container.  
     
     
         12 . Container as per  claim 11 , characterised in that the container has a main axis and the seal has two sealing regions spaced apart that are at different angles to the main axis of the container, and in that in the snapped-on state of the lid both sealing regions of the seal are in tight contact with at least one of the areas of the lid and of the container cooperating under tight contact generating the sealing region.  
     
     
         13 . Container as per  claim 11 , characterised in that webs projecting radially outward are integrally moulded on the outside area adjacent to the top edge of the container, whose radial extension is less than the container wall thickness.  
     
     
         14 . Container as per  claim 12 , characterised in that at least one web projecting radially outward is integrally moulded on the outside area adjacent to the top edge of the container, whose radial extension is less than the container wall thickness.  
     
     
         15 . Container as per  claim 1 , characterised in that at least one, radially projecting reinforcing rib is integrally moulded on the container edge on the side of the snap element facing the top edge of the container.  
     
     
         16 . Container as per  claim 1 , characterised in that the upper region of the container has a downward-facing, circumferential collar region on the outside, which is joined in the region of the top edge of the container.  
     
     
         17 . Container as per  claim 1 , characterised in that the upper collar region of the container has a radially projecting, downward-facing, circumferential collar region on which a snap element is integrally moulded.  
     
     
         18 . Container as per  claim 1 , characterised in that the lid has a circumferential area spaced away from the seal that tightly contacts the inside wall of the container.  
     
     
         19 . Container as per  claim 1 , characterised in that the container has a main axis and the seal has two sealing regions spaced apart that are at different angles to the main axis of the container, and in that in the snapped-on state of the lid both sealing regions of the seal are in tight contact with at least one of the areas of the lid and of the container cooperating under tight contact generating the sealing region and that the lid has a circumferential area spaced away from the seal that tightly contacts the inside wall of the container.  
     
     
         20 . Container as per  claim 18 , characterised in that the sealing lid region is designed as a circumferential rib having a bottom edge, the rib is projecting downward from the underside of the lid.  
     
     
         21 . Container as per  claim 19 , characterised in that the sealing lid region is designed as a circumferential rib having a bottom edge, the rib is projecting downward from the underside of the lid.  
     
     
         22 . Container as per  claim 20 , characterised in that an area projecting upward beyond the bottom edge of the rib is provided on the inside wall of the container radially inward relative to the circumferential rib.  
     
     
         23 . Container as per  claim 21 , characterised in that an area projecting upward beyond the bottom edge of the rib is provided on the inside wall of the container radially inward relative to the circumferential rib.  
     
     
         24 . Container as per  claim 1 , characterised in that the container has an inside wall and a main axis, in that the lid is provided radially inwards from the inside wall of the container with at least one projection integrally moulded on a top side of the lid and extending towards the main axis of the container.  
     
     
         25 . Container as per  claim 24 , characterised in that the top side of at least one projection is spaced vertically away from the area of the lid in tight contact with the inside wall of the container.  
     
     
         26 . Container as per  claim 24 , characterised in that at least one projection is designed as a radial edge running circumferentially around the inside of the lid.  
     
     
         27 . Container as per  claim 25 , characterised in that at least one projection is designed as a radial edge running circumferentially around the inside of the lid.  
     
     
         28 . Container as per  claim 26 , characterised in that at least one projection is designed as a radial edge running circumferentially around the inside of the lid.  
     
     
         29 . Container as per  claim 27 , characterised in that inward-facing projections are integrally moulded on the circumferential edge.  
     
     
         30 . Container as per  claim 28 , characterised in that inward-facing projections are integrally moulded on the circumferential edge.