Patent ID: 9073248
Filing Date: 2015-07-07
Classification: B29C,B29K,B29L,B65D

Abstract:
1. A method of injection moulding a plastics component with a slit comprising: providing a first mould member with a first mould surface, and a second mould member with a second surface and having an elongate apex; advancing one mould member relative to the other mould member such that the elongate apex of the second mould surface is spaced from the opposed portion of the first mould surface by a predetermined spacing of between 0.0075 and 0.075 mm, the first and second mould surfaces of the advanced members defining a mould space; and injecting injection mould material into the mould space with the predetermined spacing to substantially fill the mould space, the predetermined spacing being sufficiently narrow to form a slit between the elongate apex and the opposing portion of the first mould surface during injection and being sufficiently narrow such that the edges of the formed slit form a substantial seal to viscous liquid material.