Envelopes – wrappers – and paperboard boxes – Envelope – Series
Patent
1997-09-05
1999-10-26
Pascua, Jes F.
Envelopes, wrappers, and paperboard boxes
Envelope
Series
B65D 2710
Patent
active
059712600
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Technical Field of the Invention
This invention relates to a continuous strip of detachable consecutive interconnected products, obtained through folding, notably envelopes, bags, files, cases, foldable packing material, etc.
2. Prior Art
Continuous strips of detachable envelopes have long been used, as is shown a.o. by the following patent specifications: U.S. Pat. No. 4,066,206 (Peterson), FR-A-1,488,888 (Gysin) and GB-A-567,925 (Davies).
Such strips of envelopes, however, hold various disadvantages as to the appearance and the finish of the envelopes, after they have been separated. The said envelopes, for instance, clearly show marks of division lines.
OBJECT AND SUMMARY OF THE INVENTION
The invention inter alia aims at remedying those flaws in a very simple and effective way and at offering a continous strip of detachable interconnected products, the visible edges of which, for instance, when they are separated, are completely finished in such a way that, as far as finishing and aspect is concerned, they entirely correspond to the ones which are manufactured separately one by one and that they are hardly distinguishable from them, and this, in spite of the envelopes originally being made from a continous strip, in a somewhat analogous way to the first application set forth in patent GB-A-567925.
To that end, according to the invention, two consecutive products in the continuous strip are interconnected by a joint not being part of the products themselves and being connected, in a detachable way, through successive lines of demarcation, to each of those two consecutive products, in such a way that, on removing the joint, the said two consecutive products are completely severed.
Functionally, at least part of the joints linking the consecutive products are attached to a common carrier in such a way that, together with the carrier, they may be severed from the other products through one single operation.
In a particular application of the continuous strip of consecutive products, a joint, according to this invention, if relevant products are being formed from longitudinally consecutive areas of material which are interconnected at least through a folding line transverse to that direction, extends from the free edge of a so-called end area of a product of that strip to a so-called initial area of material of the consecutive product of the strip.
In a specific application of this invention, if those products consist of envelopes with three successive areas of material constituting, respectively, the closing flap, the front portion and the back portion of an envelope, the closing flap forms the said initial area and the back portion the said end area.
According to a preferred application of the invention, the joints stretch out beyond the products, in such a way that it is possible to print those joints in a similar way to and together with the products which are interconnected through the latter.
The invention also pertains to a process for manufacturing a continuous strip of products produced through folding, consecutive series of areas of material being constituted, which--are separated by folding lines transverse to the longitudinal direction of that strip, and two adjacent series of such areas of material being interconnected by division lines through a joint, a product out of every series of areas of material being constituted by joining the said areas through folding them round the said folding lines.
BRIEF DESCRIPTION OF THE DRAWINGS
Other particulars and advantages from the invention will be shown in the following description of some specific applications of the strip according to the invention and a process to manufacture them; this description is only provided by way of an example and does not restrict the scope of the protection claimed; the numbers referred to hereafter pertain to the corresponding drawings.
FIG. 1 is a plan view of consecutive series of areas of material.
FIG. 2 provides a schematic drawing of how envelopes are formed, according to the inv
REFERENCES:
patent: 2464490 (1949-03-01), Davies
patent: 2610784 (1952-09-01), Henry
patent: 2776085 (1957-11-01), Furey
patent: 3028069 (1962-04-01), Willis
patent: 3332604 (1967-07-01), Whitman
patent: 3559875 (1971-02-01), Wilson
patent: 3626821 (1971-12-01), Gendron
patent: 3790068 (1974-02-01), Stutz
patent: 4066206 (1978-01-01), Peterson
patent: 4497509 (1985-02-01), Gore
patent: 4804135 (1989-02-01), Bourbeau
patent: 4886205 (1989-12-01), Schnitzer
patent: 4896821 (1990-01-01), Bell
patent: 5069384 (1991-12-01), Bell
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