FR2613691A1 - METHOD AND DEVICE FOR REALIZING A CASE WITH A REPORTED LABEL - Google Patents

Abstract

The device for wrapping products, such as packets of paper handkerchiefs, in packets with label, having a means for converying a strip (11) of flexible material, cutting it into sheets and wrapping the products in the sheets, and a means for depositing the labels at regular intervals on the strip is characterized in that it has a cutting mechanism (27) co-operating with a transfer mechanism (28) for cutting the labels from an ribbon (21) with adhesive applied to one surface and placing the said labels on the moving strip (11). The invention is applied in particular to the adhesive strips for affixing the flaps of packets of paper handkerchiefs. A strip of flexible material such as polyethylene is previously marked with a discontinuous cutting line which traces the outline of the flap, the adhesive strips are laid on the strip acrossthe flaps, and then the film is cut, transversally to its direction of motion into individual sheets (3) in which the packets (2) are wrapped.

Description

METHOD AND DEVICE FOR REALIZING A CASE

WITH RECORDED LABEL

  The invention relates to a method for producing a product packaged in a flexible sheet, with a label applied externally on

one of its faces.

  It is particularly applicable to tissue tissues, folded in accordion, and packaged in a parallelepipedic case in

plastic or paper.

  In order to preserve the cleanliness of the tissues after opening the package, it is already known to provide the dispensing opening of a flap

  properly cut on the envelope.

  This flap is delimited by a line of perforations that are torn at the moment when one wants to extract the first handkerchief. The shape of this line, for example in an arc with a priming zone of the cutout, thus allows the partial release of one of the faces of the case by folding around the axis formed by the line passing through the extremities

of the cut.

  An adhesive tongue, secured to the flap at one end, serves as a removable clip and holds it in the folded position when there is no need for tissues. The end of the tab opposite the flap can

  have a non-adhesive surface part to facilitate preheating

  sion and allow the reopening of the package.

  The subject of the invention is a process for carrying out industrial

  This type of conditioning with tongue or, more generally,

  with a label attached externally on one side.

  The installations known to the Applicant comprise a device for

  label transfer, placed downstream of the substation where the

  lopped packs of tissues in their cases.

  Thus, the implementation of the labels comes in the last phase of manufacture. This organization of the various stages of making cases, a priori the simplest, leads to the addition at the end of the machine of a device for laying labels cumbersome and quite complex. Indeed, it is necessary to accurately position, by mechanical means, each case relative to the label transfer member. If necessary, if it is desired to place the label on a face that is not the upper face as it leaves the station making the cases, it is necessary to add an additional turning and positioning mechanism . In addition, the support of the labels being soft

  - a pack of tissue paper - a high tack adhesive is indis-

  to minimize the pressure exerted at the time of trans-

  and reduce the risk of product damage and

  defective. The manufacturing cost is increased.

  It has now been found that these problems can be overcome

  mes by changing the order of some steps of the realization process

of the product.

  Thus the method, according to the invention, for applying a label on one side of a product, in particular a soft product such as a bundle of folded tissues, of cellulose wadding, wrapped in a sheet of

  flexible material is characterized in that it consists in reporting the

  quette on the sheet, before wrapping the product with said sheet. This new organization of the process steps offers many advantages:

  The label is no longer affixed to a soft product, it suffices to

  see a rigid support of the sheet, facing the laying member.

  This results in greater reliability and better accuracy.

  You can use a standard quality adhesive, low tack is enough. There is greater freedom of choice for the location of the label. Indeed, the sheet to be the packaging of the product is, at this time, developed flat in the form of a continuous strip. As it is scrolling relative to the laying member, a simple adjustment of the respective drive parameters is sufficient.

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  - In the particular case of the tissue case, the

  flap is formed by a part of the envelope itself, suitable

  pre-cut, the line of perforations is made on the band

  of flexible material before its transformation into cases. However, the prede-

  cuts are all lines of weakness likely to give way under the action of the various tensions exerted on the flexible band

  in his passage through the machine. Thanks to the overlapping labels

  singing perforation lines, the risk of tearing, or even rupture of the band are thereby significantly reduced. This advantage, of course, is valid only to the extent that these are applied immediately downstream of the place where the pre-cuts are made. At the limit, this provision of the bodies authorizes the

  performing a continuous cut of the flap.

  Finally, the device according to the invention is of reduced size, and can be integrated without difficulty into an already existing facility of making products in a flexible case, not including

  not already a label applicator.

  The following description relates to a nonlimited embodiment

of the invention.

  Figure 1 is a simplified diagram of a production line.

  Figure 2 shows in detail the position of placing labels.

  FIG. 1 is a diagrammatic representation of an installation of

  wrapping tissue packets of cellulose wadding. These packages

  8 or 10 handkerchiefs originate from an upstream station relative to the direction of the arrows, not shown, where the cellulose wadding has been transformed, that is to say folded and cut, and where the tissues have been stacked in packets (2). They are driven by a belt conveyor to the station (4), represented symbolically by a block, to be packaged in a case. The station (4) is also fed sheets (3) to form the cases. At the exit, the packs of handkerchiefs

  (5) wrapped in the leaves (3) are directed by means of a trans-

  carrier to another post for possible further

  transformations, or to be prepared for transport.

  In the installations known to the Applicant, the label is

  affixed to the packets when they leave the station (4), with the inconveniences

  because it is a soft product.

  The Applicant has now found that one could perform this operation more simply, with great reliability. According to the invention, the label is deposited on the envelope film, before the

making cases.

  Figure 2 shows in more detail the item (6) in which is

performed this operation.

  A strip (11) of a plastic material such as polyethylene, or paper, is provided from a spool rotatably mounted on an axis (10). The band is kept tense, during its scrolling, at

by means of a swinging arm (12).

  It is guided by various return cylinders (13) to a device

  pre-cut suture (14) flaps. This comprises two cylinders (15, 16) rotatably mounted on parallel axes. One of the cylinders (15) comprises a cutting blade (17) provided with indentations ensuring a discontinuous line of cut, and whose shape corresponds to that of the desired precut. The latter is performed on the band, in the process

  of the blade (17) by the nip interval of the two cylinders.

  A spool of plastic tape or paper (21), adhesive on one side, is rotatably mounted on the axis (22). The ribbon (21) is driven

  by the engine cylinders (24) whose axes of rotation are parallel

the the.

  Downstream cylinders (24) have been arranged in relation to the direction of movement.

  ribbon (21), a cutting and transfer device (25). It consists of two cylinders (26, 28) driven in rotation in directions

  opposite axes parallel to the engine cylinders.

  The cylinder (26) has, on the surface, cutting blades (27) ori-

  parallel to its generator, coming to bear on the surface of the adjacent cylinder (28). They cooperate with the cylinder (28) to

  cut into labels the ribbon that is introduced in their interval.

  The surface of the cylinder (28) is pierced with orifices communicating with a

  vacuum zone, and retains the labels after cutting.

  A third cylinder (30), vertical to the first two (26 and 28), rotating in the opposite direction to the cylinder (28), comprises elements (31), forming anvils, which come, at each rotation, to

contact of the cylinder (28).

  In the contact zone of the two cylinders (28, 30) to facilitate the transfer of the labels as they pass into this position,

  the communication of the cylinder surface (28) with the vacuum is

  broken by a baffle not shown, or by some other internal means.

  The strip coming from the precut device passes through the clamping interval of the rolls (28 and 30), receives the labels therein, and is conveyed to the station for making the holsters (4) by the rolls.

referral (33).

  In the example shown, the packaging station comprises a disk of

  large diameter (40), in which parallel cells (41) have been formed.

  on its axis to receive individually the leaves (3). These are obtained by the device (42) which ensures both the cutting of the strip and the distribution in the cells. After rotating the disc at a certain angle, the tissue packets are introduced in their turn

  in the locations occupied by the leaves for packing.

  Although the operation appears clearly in reading of what

  precedes it is briefly summarized below.

  The strip (11) is unwound from its feed reel, it is

  guided to the device (14) where the blade (17) prints at intervals

  the regular ones, a line of perforations (lia). The oscillating lever (12) adjusts the band at a sufficient tension to prevent wrinkling or loosening. Then, the strip reaches the cylinders (26, 28, 30) to receive the labels (11b) which have been cut from the ribbon (21) by the cutting blades

  (27) and driven by the suction cylinder (28).

  When the adhesive side of the label comes into contact with the film (11), the depression, to which its opposite face is subjected, is interrupted to allow transfer to the film. The rotation of the counter-roll (30) is synchronized with the advance of the labels so that the

  anvils (31) serve as a support surface.

  It is up to the technician to arrange the different elements relative to each other, and to synchronize the movements of

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  rotation of the cylinders so that the labels are placed at the desired location relative to the precut (11a), as

  this is shown in the figure.

  The strip is then guided to the station (42) where it is separated into individual sheets which are introduced one by one into the cells (41) to receive the tissue packets. The case is then formed around the pack by appropriately folding the edges of the sheet and

their sealing.

  The foregoing description relates to the installation of adhesive tabs

  on paper tissue cases. The method is of course applicable whenever a product must be wrapped in a sheet of a flexible material, whether it is an adhesive tongue

  forming a fastener or a simple label.

-2613691

Claims (8)

  A method of applying a label (11b) to one of the faces of a product, especially a soft product, such as a folded tissue package of cellulose wadding, wrapped in a sheet of flexible material forming a case characterized in that it consists in applying the label on the sheet before wrapping the product (2) with said sheet.   2. Method according to claim 1, characterized in that the sheet is cut from a continuous strip (11), the label being applied to the strip before the cutting of the latter. individual leaves (3).   3. Method according to one of claims 1 and 2 characterized in that   the label is cut from a continuous ribbon (21).   4. Method according to one of the preceding claims characterized in that   a line of perforations (11a) and marked on the strip (11),   regular intervals, before placing the labels (11b).   5. Method according to the preceding claim characterized in that the line of perforations (11a) defines on the case a flap providing an opening for extracting the product, the label being arranged to serve as a removable attachment means of the flap in position of   closing, after first use of the case.   6. Method according to the preceding claim characterized in that the fastener label is adhesive, except for a part   forming grip band of the fastener.   7. A method for wrapping a soft product in a holster, made of flexible material, provided with a flap with an adhesive fastener, characterized in that it consists in unrolling a strip of flexible material from   a first reel, to be printed on the web, at regular intervals   a line of perforations delimiting a flap, unwinding a tape, adhesive on one side, from a second reel, cutting the tape into fasteners, depositing the fasteners on the strip of flexible material at the location of the perforation lines, to cut the strip into separate sheets, between the lines of perforations, 2 o613691 and to wrap the product in the sheet so that the flap   provides an extraction opening of the product of the case thus formed.   8. Device for implementing the method according to the claims   characterized in that it comprises a support (10) for a first coil, a support (22) for a second coil, means (14) for precutting at regular intervals on   the strip (11) issuing from the first coil, means (25) for disconnecting   for the labels (11b) from a ribbon (21) derived from the   x reel and for transferring the labels onto the web in the precut region, means (42) for cutting the web between two pre-cuts and means (40) for wrapping the product with the web   sheet obtained, the label being disposed on the outer face.