Envelopes – wrappers – and paperboard boxes – Wrapper
Patent
1998-04-30
2000-01-25
Garbe, Stephen P.
Envelopes, wrappers, and paperboard boxes
Wrapper
53456, 53459, 229 8708, 229938, 229 8703, 383120, 383122, 493189, B65D 6512, B65D 6514
Patent
active
060169508
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
This invention relates to wrappers for articles formed from sheet material. The sheet material may comprise paper, coated paper, printed paper, card or plastics materials. The wrapper is intended to hold a variety of products such as burgers or other takeaway food, gifts, confectionary and items of clothing and may be used in a solely utilitarian form or as a gift wrapper.
SUMMARY OF THE INVENTION
The invention provides a wrapper for an article comprising a sheet of wrapping material folded to form a flat sleeve with an out-turned seam formed by edge portions of the sleeve extending along the centre of one side of the sleeve, said edge portions being secured together at the ends of the sleeve and the sides of the sleeve being secured together along a line or lines which define in a central region of the sleeve the periphery of an enclosure which can be opened by separating the edges of the seam in the central region of the sleeve to receive an article and then be closed together and the end portions of the sleeve wrapped around the article containing central region of the sleeve.
For example the sides of the sleeve may be secured along four spaced lines which define a generally diamond shaped periphery to the cavity
More specifically the lines along which the sides of the sleeve are secured may be convexly curved to form the diamond shaped cavity with a rounded profile.
In any of the above arrangements the adhered parts of the sleeve may be secured together along said line or lines by bands of adhesive applied to one or both parts or the sleeve or by heat sealing with a coating applied to the paper with heat sealing properties.
Also in any of the above arrangements the sleeve may be formed from a rectangular sheet of wrapping material.
One of said edge portions of the blank may be arranged to extend beyond the other to facilitate separation of the edge portions for opening the cavity.
The invention also provides a method of forming a wrapper for an article comprising the steps of feeding a web of sheet material through a plurality of stations, applying adhesive to the web at spaced locations along one edge of the web and along pairs of curved convergent lines within the body of the web, folding the other side of the web so that an edge portion back extends beyond a centre line of the web, folding that edge portion back on itself in line with the centre line of the web, folding the adhesive carrying side of the web to form a flattened sleeve with the adhesive carrying edge of the web overlying said other edge portion of the web and pressing the edge portions and the sides of the web together to adhere the edge portions and the sides of the sleeve along said lines together and separating the folded wrapping from the web.
The invention further provides a method of forming a wrapper for an article comprising the steps of feeding a web of heat sealable sheet material through a plurality of stations, folding one side of the web so that an edge portion of the web extends beyond the centre line of the web, folding that edge portion back on itself in line with the centre line of the web, folding the other side of the web to form a flattened sleeve with the edge portions of the web overlying each other, heat sealing the ends of the edge portions together and heat sealing the sides of the sleeve together along a line or lines in the central region of the sleeve to define the periphery of a cavity within the sleeve.
BRIEF DESCRIPTION OF THE DRAWINGS
The following is a description of some specific embodiments of the invention, reference being made to the accompanying drawings in which;
FIG. 1 shows a square blank of wrapping material with lines indicating where the blank is to be folded and areas indicating where adhesive is to be applied;
FIG. 2 shows the blank of FIG. 1 folded into a wrapper for an article such as a burger with an open receptacle for the article prior to closure;
FIG. 3 shows the wrapper of FIG. 2 partially closed;
FIG. 4 shows the wrapper of FIGS. 2 and 3 fully clo
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patent: 3405859 (1968-10-01), Phillips, Jr.
patent: 3537360 (1970-11-01), Farnam
patent: 4575000 (1986-03-01), Gordon
patent: 4754914 (1988-07-01), Wischusen, III
patent: 4810844 (1989-03-01), Anderson
patent: 4904093 (1990-02-01), Woods et al.
patent: 5441345 (1995-08-01), Garvey et al.
patent: 5468206 (1995-11-01), Buchanan
patent: 5741077 (1998-04-01), Sasaki et al.
Garbe Stephen P.
Pethick & Money Limited
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