Packaging of articles
AssigneeMetal Closures Venus Packaging Limited
InventorArthur D. Brewill
Life of this patent
Estimating the term…
Abstract
A package comprising a body for containing the article(s) to be packaged, the body having a first opening closed by closure means movable to permit access into the interior of the body for removal of the article(s) contained within the body and a second opening for permitting insertion of article(s) into the interior of the body.
Claims15
A package comprising a body for containing the article(s) to be packaged, the body having a first opening closed by closure means movable to permit access into the interior of the body for removal of the article(s) contained within the body and a second opening for permitting insertion of article(s) into the interior of the body, the body being formed by a pair of opposed layers of plastics material joined together to define peripheral edges of the body and said first and second openings, the first opening being defined by one end edge of a first of said layers and the surface of the second layer, the second layer being extended to define the closure means in the form of a flap, the end edges of the flap being secured by welding to the first and second layers, a coating of a release material being provided between the flap and first layer in the region of the end edges of the flap in order to inhibit welding of the flap end edges to the first and second layers so that on lifting of the flap the flap end edges separate from the first and second layers.
A method of producing a package including the steps of forming a pair of superimposed layers of plastics material so that a marginal side portion of one layer protrudes beyond a side edge of the other layer, applying a coating of release material to one of the superimposed layers, presenting the superimposed layers to a folding station whereat the marginal side portion is folded to overlie one of the layers such that the coating of release material is between the layer and overlain marginal side portion, and welding and severing the superimposed layers across their width to produce the package;
- the welding partially securing the overlain marginal portion to one of the superimposed layers, the coating of release material
- (a) being applied to one of the superimposed layers at least in the regions to be welded after the marginal side portion is lain over the superimposed layer, and
- (b) inhibiting welding of the marginal portion to the superimposed layer so that on lifting of the marginal portion the marginal portion readily separates from the superimposed layer.
A method of producing a package including forming a pair of superimposed layers of plastics material of different widths so that a marginal side portion of the layer of greater width protrudes beyond a side edge of the narrower layer, presenting the superimposed layers to a folding station whereat the marginal side portion is folded to overlie one of the layers and subsequently presenting the folded superimposed layers to a welding/severing station whereat the superimposed layers are simultaneously welded and severed across their width to produce the package.
Dependencies are inferred from the claim text.