Patent ID: 7797912
Filing Date: 2010-09-21
Classification: B29C,B29K,B32B,B65B,Y10T

Abstract:
1. A process for producing a water-soluble container using a horizontal intermittent motion thermoforming machine which comprises the steps of: a) locating a first water-soluble film over a mould, said mould containing a plurality of pocket forming cavities, defined by side walls and a base, in a 2-dimensional array, each cavity being surrounded by a planar surface of the mould on all sides in which the shortest dimension of the planar surface between two adjacent cavities is at least 3 mm and between an edge of the mould and the closest cavity is at least 1.5 mm and the edges formed where the cavity side walls meet an upper surface of the mould are rounded; b) thermoforming the first film to produce a plurality of pockets; c) at least partially filling the pockets with a composition; and d) placing a second water-soluble film on top of the at least partially filled pockets and sealing the plurality of the at least partially filled pockets, wherein the cavities are positioned in the array such that there are a plurality of continuous strips of uninterrupted planar surface of the mould from a leading to a trailing edge of the mould, for receiving support means fitted to the machine for supporting the film.