FR2793770A1 - PROCESS FOR MANUFACTURING PACKING SLEEVES OR SLEEVES AND CORRESPONDING SLEEVES OR PACKING SLEEVES - Google Patents

Abstract

In a method of manufacturing sleeves or packaging sleeves, in which a reel (1) of thermoplastic film is unwound to unwind a continuous strip (2), the continuous strip (2) is coated by spreading on the strip a means of adhesion, the coated strip (2) is folded back on itself while keeping it under tension, so as to form a continuous sheath (12) which is extracted while keeping it under tension. Before or after the step of coating the continuous strip by spreading on it an adhesion means, there is permanently deposited on the continuous strip (12), at least one label or equivalent means of anti-theft detection of area greater than one square centimeter, so as to simultaneously provide packaging and anti-theft protection for articles or goods to be packaged using said packaging sleeves or sleeves.

Description

PROCESS FOR MANUFACTURING SLEEVES OR SLEEVES

  PACKAGING AND PACKING SLEEVES OR SLEEVES

CORRESPONDENTS.

  The invention relates to a method of manufacturing packaging sleeves or sleeves and to packaging sleeves or sleeves obtained by placing

implementing said method.

  It is known to provide hollow bodies such as bottles, aerosol cans and the like, in various materials, with a protective and decorative sleeve or sheath made of shrinkable plastic. This sleeve is loosely arranged around the container and, after heating causing the material to shrink

  plastic, this sleeve fits perfectly around the container.

  Document FR 2,733,733 describes a process for printing and manufacturing packaging sleeves or sleeves, a device for implementing this method and sleeves or packaging sleeves obtained by implementing this process. Anti-theft detection means are also known which are intended to be fixed to articles or goods offered for sale, for example means

  marketed by the KNOGO company under American law.

  Generally these anti-theft detection means are affixed to or inserted into articles or goods during separate, previous or

  after the placement of a sheath or packaging sleeve.

  The object of the invention is to simplify the packaging and the anti-theft protection of goods or articles, so as to reduce the number of operations prior to

putting them on sale or on the shelves.

  The subject of the invention is a method of manufacturing sleeves or packaging sleeves, in which a reel of thermoplastic film is unwound to unwind a continuous strip, the continuous strip is coated by spreading on the strip an adhesion means, folds the coated strip onto itself while keeping it under tension, so as to form a continuous sheath which is extracted while keeping it under tension, characterized in that, before or after the step of coating the continuous strip by spreading an adhesion means there, permanently deposited on the continuous strip at least one label or equivalent means of anti-theft detection of area greater than one square centimeter, so as to simultaneously ensure the packaging and the anti-theft protection of articles or goods to be packaged using said packing sleeves or sleeves. The invention also relates to a sleeve or packaging sheath, formed from a shrink film folded over itself and closed on itself by adhesion or by gluing to constitute at least one main sheath, characterized in that the sleeve or sheath has a label or part

  greater than one square centimeter forming anti-theft detection means.

  According to other characteristics of the invention: said label or part is arranged on the inner wall of the sleeve or sheath, so as to mask the anti-theft detection means and to trap it in the packaging. 15. the anti-theft detection means is an antenna means capable of being

  detected by passing through a magnetic field.

  the anti-theft detection means comprises a printed circuit capable of being

  detected at a predetermined frequency or range of frequencies.

  the sleeve or sheath is manufactured by a continuous process comprising a step of depositing said label or part on a continuous strip of thermoplastic film, before the strip is folded back on itself to constitute a

  tubular conformation able to be cut into sleeves or sleeves.

  said label or part has an adhesion or bonding face capable of

  be affixed to the thermoplastic film before folding the strip over it

even.

  said label or part is fixed to the thermoplastic film by an adhesion means comprising a solvent carrying out a surface attack on the film

retractable.

  the adhesion face of said label or part is fixed to the thermoplastic film by an adhesion means comprising an adhesive or a sensitive coating

with pressure.

  said label or part may include a visible or readable means of identification, for example a bar code, or a hologram, of an article or of a

goods to be packaged.

  The invention will be better understood thanks to the description which will follow given to

  by way of nonlimiting example with reference to the appended drawings in which: FIG. 1 schematically represents an elevation view of a device

  of implementing a manufacturing process according to the invention.

  Figure 2 shows schematically in perspective a first mode of

  sleeve production according to the invention.

  Figure 3 shows schematically in perspective a second mode of

  sleeve production according to the invention.

  Figure 4 shows schematically in perspective a third mode of

  sleeve production according to the invention.

  Referring to FIG. 1, a method according to the invention comprises for example steps consisting in unwinding from a reel 1 of thermoplastic film a continuous strip 2 of thermoplastic film so as to print this strip according to a predetermined pattern in successive printing sections 3 and 4 or to coat this strip of varnish at desired locations, coat the continuous strip 2 at the outlet of the last printing module 5 by spreading on the strip 2 an adhesive means contained in a container 6 supplying a pipe 7 connected to at least one spreading member 8, for example of the felt or brush type; unwinding from a drum 9 carrying a roll of labeling tape, a strip carrying anti-theft labels to affix them to the strip 2 and winding the strip devoid of anti-theft labels on a roll 10; fold the strip 2 under tension on itself by means of a shaping assembly 11 comprising several rollers so as to close the strip 2 on itself to form a continuous sheath 12 maintained under tension by extraction rollers 13 and pressurizing the adhesion zone corresponding to the closure of the film 2 on itself; and extract the continuous sheath 12 thus formed by advancing it step by step by successive translations by means of a mechanism 14, by debiting it by means of a double

  guillotine 15 for stacking in stacks 16 of individual sleeves ready for use.

  Thus, thanks to the invention, the manufacture of sleeves or packaging sleeves comprising anti-theft labels or equivalent anti-theft detection means is carried out according to a continuous process on a unitary device comprising printing or coating modules, means of coating of adhesion means on the shrink film, means for depositing anti-theft labels on the shrink film, means for folding and pressurizing the shrink film on itself to form a sheath and packaging means form

  of individual coils or sleeves.

  The anti-theft labels can be affixed and fixed to the thermoplastic strip 2 by the same adhesion means as that used to close the film 2 on itself or by a separate means, the main thing being that the heat shrinkage of the thermoplastic strip 2 is performed regularly without significantly distorting the proportions of the anti-theft label of each sleeve or sleeve. By way of usable adhesion means, mention may in particular be made of an adhesion means comprising a solvent which carries out a surface attack on the shrinkable film: a surface pickling similar to real chemical machining of the layer of shrinkable film is thus carried out. which produces after compression a

  real chemical weld in the corresponding adhesion zone.

  By way of adhesion, it is also possible in particular to use an adhesive or a coating sensitive to pressure, preferably an adhesive or a coating easily soluble in organic solvents such as for example from the group comprising esters, ketones, chlorinated alcohols or solvents, in particular compositions

  based on vinyl, polyurethane or polyester polymers or copolymers.

  With reference to FIG. 2, a first embodiment of the packaging sleeve or sheath according to the invention is formed from a shrink film folded over on itself and closed on itself by adhesion or by gluing for constitute a main sheath, on the inner wall of which is fixed a radio frequency label, that is to say a label detectable at a frequency

  electromagnetic predetermined.

  Preferably, the sleeve 20 comprising the label 21 is placed on an article or a commodity to be packaged and to be protected simultaneously against theft in a position corresponding to the application of the radio frequency circuit 22 against the wall of the article or commodity: the invention thus makes it possible to make the anti-theft detection means invisible and indistinguishable from a label without means of

anti-theft detection.

  With reference to FIG. 3, a second embodiment 23 of the sleeve or packaging sleeve is also formed from a shrink film on which an anti-theft label 24 has been deposited, before this film is folded down and closed.

  retractable on itself by adhesion or by bonding.

  In this embodiment, the shrink film is advantageously at least partially transparent in the case of the affixing of the anti-theft label 24 to the inner face of the sleeve or sheath 23, so as to perceive or read by means

  an appropriate reader a means of identification such as a bar code 25.

  Of course, the invention also extends to the case where the anti-theft label is affixed to the outside face of a sleeve or sheath, and in the case where the anti-theft label is printed directly on a wall of the sleeve or sheath, or affixed

  by any other direct means of marking on the material of the thermoplastic film 2.

  With reference to FIG. 4, a third embodiment 26 of the invention comprises two longitudinal grip areas 27 and 28, a transverse grip area 29 and two grip areas 30 and 31 extending transversely and longitudinally . These transverse adhesion zones 29, and 30 and 31 curvilinear can be obtained by coating an adhesive product by means of a roller.

with suitable machining.

  The adhesion zones 27 to 29 define a space between two film walls

  thermoplastic, space inside which an anti-theft label is affixed 32.

  In the case where the anti-theft label 32 is secured to the outer wall between the zones 27 and 28, it is possible to tear off this wall during the checkout, so as to neutralize the anti-theft function without damaging the packaging. . Advantageously, generally in all cases where the embodiments have adhesion zones extending transversely such as 29, 30 or 31, provision is made to leave a free space at the end of these zones extending transversely. The free space thus created allows the expulsion of air during the shrinkage of the packaging sleeve or sheath around the product to be packaged and avoids

  thus the formation of undesirable folds likely to deform the anti-theft label 32.

  The sleeve of FIG. 4 is particularly suitable for packaging a product of the bottle, flask or similar container type: the upper part delimited by the adhesion zones 30 and 31 allows a substantially constant rate of retraction of the top to bottom of the bottle, neck bottle or other similar container thus ensuring both theft protection and

  the inviolability of the bottle, the neck bottle or the wrapped container.

  The invention described with reference to several embodiments is in no way limited thereto, but on the contrary covers any modification of shape and any

  variant embodiment within the scope and spirit of the invention.

  Thus, according to the invention, any anti-theft detection means secured to a part of material with an area greater than I cm 2 can be used in place of a radiofrequency label: for example, an anti-theft label comprising an antenna detectable by a magnetic field, activated or deactivated, self-adhesive or not, transparent or not; or a so-called "intelligent" anti-theft label comprising a storage chip representing data representative of the article or merchandise to be packaged, in particular quality data, expiration date for sale or consumption,

  traceability for transport, date and manufacturing batch.

Claims (10)

  1.- Method of manufacturing sleeves or packaging sleeves, in which a reel (1) of thermoplastic film is unwound to unwind a continuous strip (2), the continuous strip (2) is coated by spreading over the strip (2 ) an adhesion means, the coated strip (2) is folded back on itself while keeping it under tension, so as to form a continuous sheath (12) which is extracted while keeping it under tension, characterized in that , before or after the step of coating the continuous strip (2) by spreading an adhesion means there, permanently deposited on the continuous strip (2), at least one label or equivalent means of anti-theft detection of area greater than one square centimeter, so as to simultaneously ensure the packaging and theft protection of articles or goods to be packaged using   said sleeves or packaging sleeves.   2.- Sleeve or packaging sheath, made from a shrink film folded over on itself and closed on itself by adhesion or by gluing to constitute at least one main sheath, characterized in that the sleeve or sheath has a label (21, 24, 32) or a part of an area greater than I   square centimeter forming anti-theft detection means.   3.- sleeve or sheath according to claim 2 characterized in that said label or part (21, 24) is disposed on the inner wall of the sleeve or sheath, so as to mask the anti-theft detection means and to imprison it in the 'packaging. 4.- sleeve or sheath according to claim 2 or claim 3 characterized in that the anti-theft detection means is an antenna means   able to be detected by passing through a magnetic field.   5.- sleeve or sheath according to claim 2 or claim 3 characterized in that the anti-theft detection means comprises a printed circuit suitable   to be detected at a predetermined frequency or range of frequencies.   6.- sleeve or sheath according to any one of claims 2 to 5,   characterized in that the sleeve or sheath is manufactured by a continuous process comprising a step of depositing said label or part on a continuous strip (2) of thermoplastic film, before the strip (2) is folded back on itself to   constitute a tubular conformation capable of being cut into sleeves or sleeves.   7.- Sleeve or sheath according to claim 6 characterized in that said label or part (21, 24, 32) has an adhesion or bonding face capable of being affixed to the thermoplastic film before folding the strip over it- even. 8.- sleeve or sheath according to claim 7, characterized in that the adhesion face of said label or part (21, 24, 32) is fixed to the thermoplastic film by an adhesion means comprising a solvent providing a   surface attack of the shrink film.   9.- sleeve or sheath according to claim 7, characterized in that the adhesion face of said label or part (21, 24, 32) is fixed to the thermoplastic film by an adhesion means comprising an adhesive or a sensitive coating with pressure.   10.- Sleeve or sheath according to any one of claims 2 to 9   characterized in that said label or part (21, 24, 32) comprises a visible or readable means of identification, for example a bar code (25), or a hologram,   an article or merchandise to be packaged.