[0001] The present invention concerns the field of packaging systems of sheet-like articles
intended for individual extraction. Articles of this type, in general but not exclusively
disposable, may comprise protective sheets or plastic film mantles (for example, made
of polyethylene) for hairdressers, for beauty treatments such as body treatments with
mud or cream.
[0002] Articles of this kind, if their size is considerable, are bundle packaged in groups
of articles folded numerous times, so as to reach compact size shapes that facilitate
storage and handling. The bundle can be arranged in a rigid box, made from cardboard
or plastic material, or in a simple packet. In case of articles the use of which involves
hygiene issues, the wrapper (box or packet) obviously also carries out a protection
and isolation function.
[0003] The folding should be such as to make it possible to extract a single article at
a time from the packaging, maintaining its integrity whilst also maintaining the integrity
of the bundle of the remaining articles for future use. This result is currently not
achieved in a satisfactory manner. According to a known solution, a bundle is made
up of a stack of piled articles, joined along a side through punching or other types
of connections or welding, with respective pre-cut lines running along the joining
side and right beside it.
[0004] The folding which reduces the size of the stack in a direction orthogonal to the
pre-cut lines (direction normally corresponding to the longitudinal extension of the
article) is thus carried out in a consecutive manner parallel to the aforementioned
lines, so as to fold the stack upon itself. The direction orthogonal to the pre-cut
lines (and to the folding lines) is the one along which a traction is exerted manually
by the user to tear-away the articles, one by one, from the stack. On the other hand,
due to the aforementioned configuration, the removal of one single article by tearing
it away, as a result of the friction exerted between adjacent articles, tends to unfold
the stack of remaining articles in an uncontrolled manner, or in any case to alter
the orderly arrangement.
[0005] Considering the aforementioned circumstances, the applicant has now devised a new
method of bundle packaging sheet-like articles intended for being extracted individually,
which is able to achieve easy extraction of every single article without altering
the orderly and compact bundle of the remaining articles, for future use.
[0006] According to the present invention, this and other results are achieved with the
method the essential characteristics of which are defined by the attached claim 1.
A bundle packaging which can be obtained with the method according to the invention
has the essential characteristics defined by claim 7.
[0007] The characteristics and advantages of the method according to the present invention
shall become clearer from the following description of one of its embodiments, given
as an example and not for limiting purposes, with reference to the attached drawings,
in which:
- figures from 1 a to 1 d respectively schematize section views of arrangements of sheet-like
articles which can be packaged according to the invention;
- figure 2 schematically shows a perspective view of a stack of articles made with the
method according to the invention, before a folding step; and
- figures 3 and 4 represent, through schematic perspective views, two possible folded
configurations of the stack of figure 2.
[0008] With reference to the above figures, according to the invention the articles are
firstly provided, on one of the sides, with excess material with respect to the final
desired size of the article intended for use. The excess material is that on which,
once various articles have been piled up so as to form a stack, a mutual connection
will be made between the articles to stabilise the stack itself. If, as generally
occurs, the articles have a prevailing extension along a longitudinal direction, the
excess material will be, contrary to the prior art, made in the transverse direction,
whereby the article, before the assembling in the stack, will have the same length
and oversized width with respect to the final, use configuration.
[0009] Going into detail, according to what shown in the figures from 1a to 1d, an article
1 can be made up of a single sheet 1 (figure 1 a), but can also have a doubled structure,
like the single-fold article 11 of figure 1b, or a bellow-like structure as in the
article 101 with multiple folds of figure 1c. Moreover, like in the example of figure
1d, the article may take on the shape of a tube 1001. Such figures are obviously unrealistic
diagrams, since it is clear that in all cases, as the article consists of a thin plastic,
paper (or even fabric) film, even when it is folded it maintains an overall sheet-like
squashed configuration. Such figures also represent the article in section on a plane
orthogonal to the side along which the aforementioned excess extends, whereby the
latter is represented and indicated, respectively, by the reference numerals 2, 12,
102, 1002.
[0010] The excess 2 is in practice defined between one side or margin 1a of the article
1, and a pre-cut line 3 (13, 103, 1003 in figures from 1b to 1d corresponding to the
different embodiments), as can be clearly seen from figure 2 in which it is shown
how a plurality of articles 1, in a variable number according to the cases, has been
piled up to form a stack 4 of articles perfectly aligned with one another and orderly.
[0011] At this point, bearing in mind the need to reduce the bulk of the packaging, the
folding of the stack 4 is carried out, according to parallel and consecutive folding
lines orthogonal with the pre-cut lines, thus folding the stack upon itself. In the
aforementioned case in which, like in the example, the stack has a longitudinal extension
parallel to the pre-cut lines 3, the folds will therefore run in the transverse direction.
[0012] The overall shape of the folding can vary, following for example a bellows shape
like in figure 3, or with consecutive book-like closures in figure 4. Of course, the
various pre-cut lines 3 continue to be superimposed to one another, just like the
excess portions 2. The pre-cutting, according to a variant embodiment, can also be
made in this step, i.e. after the folding, or also on the stack 4 before being folded,
instead of in the preliminary step on each single article 1.
[0013] From the figures it should also be noted how the direction along which the tearing
force must act so as to be able to separate the single products from the stack, indicated
with X and obviously substantially orthogonal to the pre-cut lines 3, is in this case
parallel to the folding lines.
[0014] The subsequent step provides making a distribution of holes 5 on the excess portions
2, through cold or hot (if the material of the articles allows it) mechanical punching
processes. These holes are needed for the mechanical fastening that consolidates the
configuration of the folded stack (or of many stacks piled together), said fastening
being carried out through tubular cores or flexible straps (not represented) to be
engaged in the holes. The mechanical fastening means are normally connected mechanically
to the wrapper in which, as a final step of the packaging method, the stack or stacks
are arranged, all according to what can be found
per se in the prior art. Such fastening means may also be made up of folded portions of
the wrapper, and in general by any other mechanical system suitable for anchoring
the stack or stacks to one or more fixed points so as to counteract the tearing force
for removing the single article.
[0015] In any case, it should be noted that, in the case in which a single stack is used,
the mechanical fixing means can even be left out, with it only being necessary to
insert the holes 5 in any kind of support, either fixed or even simply held manually.
In order to proceed to the progressive extraction of every single article 1, starting
from the article which is exposed first on top, it is indeed necessary to operate
a manual traction, on a free side flap of the article itself (i.e. the flap opposite
to the excess zone 2), along the axis X, counteracted indeed on the excess zone by
the mechanical connection to the wrapper and/or by a manual withholding action. The
tearing along the pre-cut line 3 will leave the excess portion 2 integral with the
stack, the article thus being in the shape and size decided for its use.
[0016] It should be appreciated how, thanks to the fact that the traction does not operate
orthogonally to the folds, and therefore in a manner such as to make it easier to
unwrap or unfold, but rather parallel to the folds themselves, the friction component
generated on the remaining articles by effect of the extraction is efficiently counteracted
by the junction along the respective pre-cut lines, whereby such articles remain substantially
undisturbed and the stack remains completely compact and orderly until the last article
has been extracted.
[0017] The prefixed object of the invention is thus fully achieved, with a solution that
does not have any negative impact upon simplicity of production, and can be applied
with articles of any shape and material already currently in use, not only in the
sanitary and beauty treatment fields, but also in that of packaging films and in general
wherever there is need for packaging analogous to that outlined above.
[0018] The present invention has been described with reference to a preferred embodiment.
It should be understood that there may be other embodiments that fall within the same
inventive concept, as defined by the scope of protection of the appended claims.
1. A method for bundle packaging a number of sheet-like articles (1), comprising the
steps of: producing each of said articles with an excess portion (2), whereby the
article is oversized with respect to the final use size, said portion (2) being defined
along a side (2a) of the article; piling said articles (1) so as to form at least
one orderly stack (4); folding said stack (4) so as to reduce its size; forming on
said articles (1), one by one before the piling in the stack (4), or subsequently
when the stack (4) has been formed or folded, respective pre-cut lines (3), whereby
in each article (1) said excess portion (2) becomes defined between said side (2a)
and said pre-cut line (3); and making mutually integral the articles (1) in correspondence
with the excess portions (2), whereby the articles (1) are singularly adapted to a
tear-away extraction along said pre-cut lines (3) leaving the excess portion (2) integral
with the stack (4) with the remaining articles, the method being characterized in that the folding of the stack (4) is carried out along folding lines substantially orthogonal
to said pre-cut lines (3).
2. The method according to claim 1, wherein said articles (1) have a prevailing development
along a longitudinal direction, said side (2a) and said pre-cut line (3) delimiting
the excess portion (2) being extended longitudinally, whereby the article before being
torn away form the stack (4), and therefore comprising the excess portion (2), has,
with respect to the extracted use configuration, the same length and an oversized
width.
3. The method according to claim 1 or 2, wherein said step of making the articles (1)
mutually integral in at least one stack (4) comprises the step of forming in said
excess portion (2) a distribution of holes (5) and engaging with said holes (5) mechanical
fastening means.
4. The method according to any of the previous claims, wherein said folded stack (4)
is arranged in a protective, rigid or flexible wrapper.
5. The method according to claim 3, wherein said folded stack (4) is arranged within
a protective, rigid or flexible wrapper, said fastening means being made integral
with said wrapper.
6. The method according to claim 4 or 5, wherein said mechanical fastening means comprise
tubular cores, flexible straps, or folded portions of said wrapper.
7. A bundle packaging of a number of sheet-light articles (1), comprising at least one
orderly stack (4) of piled articles (1), made mutually integral in correspondence
with respective excess portions (2), whereby the article is oversized with respect
to the final use size, said excess portions (2) being each defined between a side
(2a) of the article (1) and a pre-cut line (3) whereby the articles (1) are singularly
adapted to a tear away extraction along said pre-cut line (3) living the excess portion
(2) integral with the stack (4), the stack being folded so as to reduce its size,
the packaging being characterized in that the folding of the stack (4) is carried out along folding lines substantially orthogonal
to said pre-cut lines (3).
8. The packaging according to claim 1, wherein said articles 1 have a prevailing development
along a longitudinal direction, said side (2a) and said pre-cut line (3) delimiting
the excess portion (2) being extended longitudinally, whereby the article before being
torn away form the stack (4), and therefore comprising the excess portion (2), has,
with respect to the extracted use configuration, the same length and an oversized
width.
9. The packaging according to claim 7 or 8, wherein said articles (1) are made mutually
integral via mechanical fastening means engaged with a distribution of holes (5) formed
in said excess portions (2).
10. The packaging according to any of the claims from 7 to 9, wherein said folded stack
(4) is arranged in a protective, rigid or flexible wrapper.
11. The packaging according to any of the claims from 7 to 9, wherein said folded stack
(4) is arranged within a protective, rigid or flexible wrapper, said fastening means
being integral with said wrapper.
12. The packaging according to claim 10 or 11, wherein said mechanical fastening means
comprise tubular cores, flexible straps, or folded portions of said wrapper.