Screw cap, tool and method for screwing a cap onto a container

Abstract

Screw cap (200), loading piston (300), method for aligning the screw cap (200) and the loading piston (300) in relation to each other and a method for screwing a screw cap (200) onto a threaded neck portion of a packaging container. The screw cap (200) comprises a base portion (210) comprising a top (212) and a bottom surface (214);an annular portion (220) raised from the base portion (210), the annular portion having an inner (222) and an outer surface (224);at least one first threaded portion (252) arranged on the inner surface (222) of the annular portion, whereinthe base portion (210) comprises engagement means (240), such that the screw cap (200) is configured to engage a tool (300) with at least one complementary engagement means in a process of screwing the cap onto the container with the complementary threaded neck portion.

1 .- 14 . (canceled) 
     
     
         15 . A screw cap for a container, comprising:
 a base comprising a top surface and a bottom surface, the top surface configured such that the top surface faces towards an opening spout of a packaging container when the screw cap is applied to the packaging container;   an annular wall extending from the base, the annular wall comprising an inner surface comprising a thread;   a plurality of protrusions protruding from the base portion, the protrusions arranged in a circle around the center of the top surface, each protrusion having an end in a circumferential direction; and   wherein the end in the circumferential direction of at least one protrusion is aligned in a radial direction with a starting point of the thread.   
     
     
         16 . The screw cap of  claim 15 , comprising three or more protrusions. 
     
     
         17 . The screw cap of  claim 16 , comprising three protrusions. 
     
     
         18 . The screw cap of  claim 15 , wherein the inner surface comprises a plurality of threads. 
     
     
         19 . The screw cap of  claim 18 , wherein each thread comprises a starting point, each starting point aligned with a protrusion. 
     
     
         20 . The screw cap of  claim 18 , wherein the inner surface comprises three or more threads. 
     
     
         21 . The screw cap of  claim 20 , wherein the inner surface comprises three threads. 
     
     
         22 . The screw cap of  claim 15 , wherein each protrusion is configured to engage a complementary engagement part, the complementary engagement part positioned on a tool configured to place the screw cap on the packaging container. 
     
     
         23 . The screw cap of  claim 15 , wherein a first protrusion is separated from a second protrusion by approximately 120 degrees along the circle. 
     
     
         24 . The screw cap of  claim 15 , wherein each protrusion is adjacent a recess. 
     
     
         25 . The screw cap of  claim 24 , comprising three protrusions and three recesses. 
     
     
         26 . A screw cap for a container, comprising:
 a base comprising a top surface and a bottom surface, the top surface configured such that the top surface faces towards an opening spout of a packaging container when the screw cap is applied to the packaging container;   an annular wall extending from the base, the annular wall comprising an inner surface comprising three threads;   three protrusions protruding from the base portion, the three protrusions arranged in a circle around the center of the top surface, each protrusion separated approximately 120 degrees from another protrusion and having an end in a circumferential direction; and   wherein the end in the circumferential direction of at least one protrusion is aligned in a radial direction with a starting point of at least one thread.   
     
     
         27 . The screw cap of  claim 26 , wherein each end is aligned in a radial direction with a starting point of a respective thread.