Screw threads

Abstract

In an example, a closure engaging part comprises a plurality of threaded portions, wherein a portion of a screw thread is provided on each threaded portion. In some examples the closure engaging molded fiber part further comprises a flexible portion between and connecting a pair of threaded portions, wherein the flexible portions are more flexible than the threaded portions.

1 . A closure engaging part comprising:
 a plurality of threaded portions, wherein a portion of a screw thread is provided on each threaded portion; and   a flexible portion between and connecting a pair of threaded portions, wherein the flexible portions are more flexible than the threaded portions.   
     
     
         2 . A closure engaging part as claimed in  claim 1  wherein the closure engaging part is a molded fiber part. 
     
     
         3 . A closure engaging part as claimed in  claim 2 , wherein the flexible portions and threaded portions are integrally formed in a pulp molding process. 
     
     
         4 . A closure engaging part as claimed in  claim 2 , wherein the screw thread is defined using a hot pressing process. 
     
     
         5 . A closure engaging part as claimed in  claim 1 , comprising at least three threaded portions and two flexible portions. 
     
     
         6 . A closure engaging part as claimed in  claim 1 , wherein each threaded portion has a circular arc shaped cross section. 
     
     
         7 . A closure engaging part as claimed in  claim 1  further comprising a securing means, wherein the securing means comprises an adhesive, tape or mechanical fixing. 
     
     
         8 . A container comprising:
 a body;   a closure engaging part secured around an opening of the body, the closure engaging part comprising:
 a first threaded portion comprising a first portion of a screw thread; 
 a second threaded portion comprising a second portion of a screw thread; and 
 a flexible portion without a screw thread connecting the first and second threaded portions. 
   
     
     
         9 . A container as claimed in  claim 8  wherein at least one of the body and the closure engaging part are formed from molded fibers. 
     
     
         10 . A container as claimed in  claim 8  further comprising:
 a sealing member arranged around the opening of the body, which when a closure is screwed onto the screw thread provides a seal between the container and the closure. 
 
     
     
         11 . A method comprising:
 forming a plurality of threaded portions of a closure engaging object, each comprising a portion of a screw thread; and   forming a flexible portion, wherein the flexible portion provides a flexible connection between two of the threaded portions.   
     
     
         12 . A method as claimed in  claim 11  wherein forming the plurality of threaded portions and forming the flexible portion are performed in a fiber molding operation and are formed on a fiber molding screen. 
     
     
         13 . A method as claimed in  claim 11  wherein forming the portions of screw thread on the plurality of threaded portions comprises hot pressing the plurality of threaded portions. 
     
     
         14 . A method as claimed in  claim 11  further comprising:
 attaching the closure engaging object around an opening of a container. 
 
     
     
         15 . A method as claimed in  claim 14  wherein attaching the closure engaging object comprises:
 providing an adhesive on the container or on the closure engaging object; and 
 wrapping the closure engaging object around the opening of the container to adhere the molded fiber object to the container.