Patent GB-1167744-A (GB)
Title: Wrapping Material and the Fashioning of Packaging Blanks and the Formation of Containers therefrom
Inventor: MCCULLOUGH JANE FISKE
IPC: B65D65/42
Filed: 1966-10-18
Abstract: 1,167,744. Wrapping; cartons. J. F. McCULLOUGH. 18 Oct., 1966, No. 46577/66. Headings B8C and B8P. A self-sealing article-wrapping or cartonforming material comprises two separate sheets each having a self-adhering-only adhesive coating on one side and either made up to form a blank in which the sheets partially overlap to leave marginal flaps which adhere when united or supplied in rolls or stacks for shaping and making up by a user. The wrapping material may be formed by uniting a flat adhesive coated liner sheet 21, e.g. kraft paper foil &c., Fig. 3, with either a single faced corrugated sheet 20 having adhesive on at least the ridges of the corrugations or a protective cushion sheet having nodules (n<SP>1</SP>), (Fig. 7x, not shown) coated on at least their tops. The sheet 21 may be scored to assist folding. A wrapper blank according to the invention may enclose a stack of the sheets interleaved with their adhesive surfaces all uppermost, Fig. 1. Alternatively, a roll with the sheets arranged as interleaved webs may be provided in a carton with an exit slot having a cutting edge (Fig. 2, not shown). In one embodiment, Figs. 1, 3, the sheet 21 has a width equal to that of the package but is narrower than the sheet 20 and is staggered longitudinally with respect to it to form flaps 25a. The protruding end portions are cut to form flaps 25f which seal the package when folded inwardly on to an adhesive insert 21a (Figs. 14, 15, not shown). In other embodiments, Figs. 8-106 (not shown), the sheets may be superposed in offset relation to provide sealing flaps on one, two or three sides. A cylindrical package or carton with triangular sealing flaps folded on to an adhesive disc at one end may be formed. The upper end may be sealed by gusseted bag type closure. The wrapper may be open at both ends. In further embodiments, Figs. 13c (14, 15, not shown), the sheet 21 is smaller than the sheet 20. A seal is formed on three sides of the article by folding and uniting the exposed corrugated surfaces. Wadding, e.g. kapok, raw cotton &c. may be inserted between the sheets 20, 21 (Fig. 14, not shown) to provide protective padding. Two separate inner sheets may be formed. To stiffen the package, one of the two inner sheets may be of the same corrugated material as the outer sheet, the corrugations being placed transversely to those of the outer sheet. An article may be enclosed between two sets of sheets, each as shown in Fig. 13c, united around the four exposed margins (Figs. 11, 12, not shown). In other embodiments, an end portion 32e, Fig. 18b is folded under the sheet and pieces are cut off to form the corners h<SP>1</SP>. Side flaps 32a are folded up around the article and the package sealed by firstly folding end portion 32c, Fig. 18c, over and then uniting portion 32b with it. In a similar embodiment (Fig. 19c, not shown) all four corners are removed and instead of folding back the portion 32e an adhesive insert is laid on top of the article and infolded side margins and both end portions folded on to it seal the package. In forming a lined carbon, pre-scored sheets 20, 21, Fig. 21a, may be folded to form the outer and liner respectively which are united by the facing adhesive surfaces. The package is sealed by folding flaps 35a on to an adhesive insert 21m laid on the contents. The flaps may be omitted. Stiffened envelope-type packages (Fig. 22, not shown) and Fig. 23 may also be formed, excess material between the corners of the inner sheet and the sides of the outer in the latter embodiment being pinched in, as at 39p, to give the package depth.