BR102018017084A2 - POLYMERIC FILM LABEL WITH ADHESIVE TERM APPLIED TO RETURNABLE BOTTLES AND METHOD OF APPLICATION AND REMOVAL OF THE REFERRED LABEL APPLIED TO RETURNABLE BOTTLES - Google Patents

Abstract

the present invention deals with a label made of polymeric film belonging to the field of labeling bottles on an industrial scale, preferably in returnable type bottles, known as "ref pet"; the label (10) is made of bopp film (bi-oriented polypropylene) in a monolayer with a thickness varying between 25 to 36 g / m², with printing (p1) with colors and / or transparency and / or metallized and / or high quality images and that is provided in square formats arranged in coils (b). the surface (11) of the bopp film (10) receives from 2 to 3 g / m² of thermal adhesive varnish in order to cover 10 to 100% of the face (11), where the thermal adhesive varnish (20) is composed of resin acrylic, water, solvents and additives appearing, when at room temperature, in a glassy state, allowing labels to be wound (b) (10) and, when subjected to high temperature, for example 70 oc, adopts the state? glass transition ? or " glass transition " starting to adhere to the surface of bottles (g) in pet, bopp, pe, glass and others through industrial application. said label (10), can be removed from the surfaces of the bottles (g) can be used in an industrial washing medium that includes a composition (c1) made of 100% water, 3% chaotic soda and specific additives, in addition to being submerged in this composition (c1) up to 3 minutes at a temperature of 52 to 56 oC. thus, the label (10) completely detaches from the bottle (g), without leaving any residue in it, allowing the return of these bottles to the filling process in cycles that can vary from at least 10 packages and 10 returns.

Description

"POLYMERIC FILM LABEL WITH ADHESIVE TERM APPLIED TO RETURNABLE BOTTLES AND METHOD OF APPLICATION AND REMOVAL OF THE REFERRED LABEL APPLIED TO RETURNABLE BOTTLES".

TECHNICAL FIELD

[001] This invention deals with a label made of polymeric film belonging to the field of labeling bottles on an industrial scale, preferably in returnable type bottles, known as "REF PET"; this polymeric film label with the thermo adhesive adhesive of this patent is not restricted to the PET bottle model, but can also be applied to glass and other bottles, since the adhesion of the innovated label is complete and durable ( non-permanent), which can be removed by industrial washing in tanks with water composition and specific additives for this purpose, which now adopt an exclusive washing method and steps, described below; the film is supplied on a roll and with the term adhesive applied to the back of the label front, which adhesive is activated during labeling by means of adequate heating and pressure, dispensing conventional devices such as glue or similar.

TECHNICAL FUNDAMENTALS

[002] The labels are fundamental pieces to guarantee a visual contact and a satisfactory connection between the consumer and the bottle and are determining factors in the choice of purchase. In general, the label reflects the image and quality of the brand, so it is very important to ensure that they are always securely and firmly attached, including resistance to condensation or cold water. For this, it is necessary to use high performance means (adhesives or printing) that can ensure the quality of your products.

[003] The current market is theoretically divided into two types of labels: (i) those applied to disposable packaging (non-returnable) and, (ii) those applied to returnable packaging, such as bottles, for example.

[004] In the case of labels applied to disposable (non-returnable) bottles, it can be said that they have relatively few problems, more precisely related to the choice of the type of substrate (polymeric film, paper or printing) associated with the type of bottle (PET or others). It is said that there are few problems, since these labels are usually taken for disposal and recycling together with the bottles and bottles. Among the various decoration or labeling processes for disposable bottles, the most widespread is the “wrap oround” or “roll labei” process, in which a printed plastic film (Bopp) tape is applied around the bottle using adhesive heated - hot melt at its ends. The adhesive is applied over the label on the labeling equipment and needs to be at high temperatures (130 ° C) and in a liquid state. Even after mechanical removal of the label, the adhesive remains active in the bottle, accumulating dirt, making it impossible to reuse the bottle.

[005] In the case of returnable bottles, however, one of the main conditions is related to the fact that the label, in addition to meeting the requirements mentioned above (fastening, good visualization resistance and others) during exposure to the consumer, must present some technical standards that allow easy removal during the industrial washing process of the bottles for new packaging.

The method of applying labels on returnable bottles.

[006] The labeling or decoration of returnable bottles and jars is made in the following ways: a) Paper Label: known as the beer label, it is a substrate based on long fibers of Cellulose, impregnated with resin, on which printing is performed. It is applied to the bottle using adhesives during the labeling process, over its entire internal surface. b) Permanent Decoration: b1) Silk Screen is a process in which the ink is deposited directly on the bottle. After drying or curing, it becomes permanent in the glass or plastic bottle. b2) Heat Transfer: Printing is performed on a tape and silicon paper. Subsequently, in labeling machines, the ink deposited on the paper is transferred definitively to the plastic bottle, only plastic.

[007] The present invention is dedicated to improving the labeling of returnable bottles, allowing cost reduction, less use of raw materials, reduction of industrial waste, investments in specific equipment, maintaining or improving the needs of visual communication and ease of removal during the washing process. Initially dedicated to the labeling of returnable bottles based on PET (Ethylene Terephthalate) known as Ref Pet.

From the process of washing and removing labels from returnable bottles [008] Namely, the process of washing returnable bottles takes place in an industrial washer where the residues, macroscopic and microscopic, organic and inorganic, existing in the bottle are eliminated. Chemical and physical actions are involved in its removal. The chemical action consists of a caustic attack with hot soda, which can be aided by additives (normally, based on surfactants), whose main role is the removal of organic compounds and the solubilization of some inorganic compounds. Parallel to this chemical action, there is a mechanical physical action, with immersion and jets of liquid directed into the bottle.

[009] A bottle washer must also remove the labels from the bottles, which is why it always has a label extractor attached to each washing tank. The label extractor consists of a drum that is located inside the external recirculation circuit of the tanks in which the labels are attached and are removed to the outside.

[010] Qualified in the area, they are aware that there are technical differences in the process of removing and disposing of plastic and paper labels.

[011] For example, self-adhesive labels (bond paper, couche or others that are made with a paper layer, a layer of adhesive and the liner - which is removed at the time of application), when submitted to the washing equipment descriptor industrial concentration, the concentration of caustic soda is an extremely important factor, because if the concentration is increased, the washing machine's ability to remove dirt is improved, but the speed of destruction of the cellulose from the labels is also increased, which is harmful to the ability to clean bath water. It is true that the additive used in washing, usually based on surfactants, helps to solubilize the dirt that is to be removed (mineral, organic or biological deposits). However, it also dissolves the label inks, which leads to contamination of the washing solution and potentially the final product.

[012] Thus, the biggest inconvenience for the removal of self-adhesive labels is related to the countless residues generated in the washing that end up mixing with the water, dirtying it with unwanted frequency, besides forming a sludge that becomes industrial waste to be removed from the equipment systematically.

[013] The labels made of plastic film, such as BOPP (bi-oriented polypropylene), are being used more and more for being an easy-to-handle material with good graphic and visual quality. The application of BOPP labels with adhesive on bottles and flasks is usually carried out by means of 'hot melt' adhesive and, in most cases, they are applied by means of the "frontal" type (already described) or, still, "roll label" type, that is, "complete circular" where the adhesive is applied to a sector of the bottle, using a glue stick, which receives the end of the polymeric film and then applies adhesive, also by means of collar, over a sector of the label itself so that the other end of the label, when completing the turn, fixes on itself ("over lap").

[014] This type of "roll label", usually applied to PET bottles of soft drinks and other products, has the greatest difficulty of removing the adhesive points that remain in the bottle when removing the label. In the case of disposable bottles there is no problem, however, considering the possibility of making this PET bottle returnable, such points of glue become a practically insurmountable inconvenience, since the washing process is not sufficient to remove them.

Of Returnable PET Bottles - "REF PET" [015] Despite being the champion of recycling, the inadequate consumption and disposal of PET bottles and bottles is still a problem for the environment. Some environmentalists even advocate a return to the use of glass packaging with a view to reducing environmental damage, but the practicality of handling and transporting PETs resist all the controversy surrounding it.

[016] In order to solve this equation, there is now an ecological alternative to minimize the inappropriate disposal of PETs. It is called "REF PET" (free translation from English: PET Return). The "REF PET" packaging brings differentiation from the already known PETs, a greater resistance and easy handling, in addition to promising a reduction in the resale value, because at the point of sale, the empty returnable packaging can be exchanged for a full one, representing a good savings for consumers and a gain for nature. The project is that the bottle can be used up to 10 times and, for that, it must be subjected to the washing and de-labeling process with each new filling.

PROBLEM TO BE SOLVED

[017] Therefore, the biggest problem envisaged at the moment refers to the process of de-labeling the "REF PET" bottles, that is, what type of label, type of adhesive and application method to be used that allows said "PET bottles" "withstand market demands (humidity, friction and others) and that also allow their total removal when subjected to conventional washing and de-labeling equipment, so that said bottles can be filled again within costs fully absorbed by the industry, ultimately favoring industry and the consumer.

ANALYSIS OF THE STATE OF THE TECHNIQUE

[018] Some labels located in the search point out solutions aimed at the application of labels on polymeric film in PET bottles, such as the thermoactive label (heat activated films). This model can be viewed in the document US6680097, however it is a self-adhesive label for glass or plastic bottles (drinks, medicine, test tubes and others) provided with a layer of shrinkable film when applied and which returns to its normal state when exposed to high temperature in the washing device.

[019] Another North American document of n. US2011215018 discloses a process for removing plastic labels that use hot water and / or chemical additives and that has a time of 3 (three) minutes for such removal.

[020] Another document of the state of the art of n. CN105427743 talks about the "difficulty in removing the plastic label without leaving residue". To do so, it uses a polymeric film label with an adhesive layer based on ammonia, organic amines and water to be applied in a plastic bottle that can be extracted by washing process with chemical and thermal steps.

[021] Other patent documents were found, but none of them uses the adhesive composition applied in polymeric film, in particular BOPP (Bi-oriented polypropylene) of the present invention, a label that still innovates in terms of application method, since it does not require usual collars and innovates in the method of removal, freeing the substrate - bottle - within 3 (three) minutes, revealing, therefore, that the present request meets the legal requirements of novelty and inventiveness. OBJECTIVES AND ADVANTAGES OF THE INVENTION

[022] In order to bring improvements to the labeling sector, mainly focused on the solution for applying labels on "REF PET" bottles, but not restricted to this type of bottle or bottle, since it can be applied to glass bottles and PET bottles, non-returnable, cylindrical or quadrangular, the applicant developed a model of label made of polymeric film, preferably of the BOPP type (Bi-oriented Polypropylene) in its various versions and which is endowed with an adhesive term applied on the back of the front face that , in turn can contain impressions obtained by conventional means; said label is of the type supplied in reels with continuous repetition.

[023] The objective of this invention is to provide that the label is made in a Bopp monolayer, containing the thermo-adhesive adhesive applied to the unprinted surface, which is composed of a copolymer thermoplastic resin base, water base, solvents and additives, composing a varnish in a glassy state at room temperature and which, subjected to high temperature, for example 70 oC, adopts the semi-liquid state, which allows adhesion to the surface of bottles in PET, BOPP, PE, glass and others.

[024] Another objective of the present invention is to present a method of applying the label with an adhesive term, which respects the original washing characteristics of the bottles, that is, without chemical or mechanical alteration, thus allowing a greater number of cycles of the bottles Ref Pet.

[025] This invention also aims at the use of already existing labeling equipment, normally intended for the labeling of disposable PET bottles, making investment in exclusive returnable bottle labeling equipment unnecessary.

[026] Namely, the BOPP polymeric film receives, on the back of the printed surface, the uniform distribution of the special adhesive based on thermo-adhesive varnish and can be rewound. Seconds before the label is applied to the bottle, the term adhesive, already belonging to the innovative application method, is heated to a specific temperature in order to transform into a semi-liquid adhesive, changing, after application, immediately to its original form of solid varnish, but already attached to the outer face of the bottle. The thermal adhesive varnish is distributed on the label surface (in the form of bands, lines, dots, etc.), occupying 10 to 99% of the area of each label.

[027] Thus, when the labels already provided with the varnish and arranged in the form of a coil in the machine are moved at continuous speed during the labeling process, they enter a heating chamber with a minimum temperature of 35 oC and a maximum of 130 oC to activate the varnish adhesion principle, making the adhesive slightly liquefied to be applied to the surface of the bottle. For a better understanding of the present invention and in a preferential industrial option, the BOPP film with the adhesive term in question, when entering the heating chamber, starts its activation at 35 oC and reaches the "gloss tronsition" or "glass transition" at 70 oC , this moment when the film comes in contact with the surface of the bottle, adhering to it. The heating chamber used in this application method completely replaces the use of conventional collars, speeding up the process and avoiding all inconveniences such as dirt and glue spills, interruption of the line, constant adjustment of the temperature of the glue and many others.

[028] It is important to clarify that the temperature of activation of the adhesive term in question is related to the speed of displacement of the film, and the ideal temperature for the final adhesion of the label on the bottle is, on average, at 40 -60oC. For example, a machine with detachment at 9 km / h, allows the application of labels to 22,000 bottles. Such information serves only as a basis of understanding, since there are machines that produce labeling 10,000,16,000, 32,000 bottles / hour.

[029] Once the film with the adhesive term in question is applied to the bottle, its adhesion is long-lasting (not permanent), thus being able to be removed in an industrial washing process in tanks with water composition and specific additives for such, and for this purpose, the present invention also includes chemical and pressure means in this washing process that optimize the removal of labels and subsequent disposal, since the label.

[030] The innovative label has a geometric quadrilateral shape in order to be applied to the side of the bottle ("roll labei").

[031] Comparing the innovative thermo adhesive label with the labels available on the market for labeling returnable bottles, notably paper labels, it can be said that the benefits achieved are: - significant cost reduction of the basic raw material when comparing the cost of the BOPP substrate with the cost of paper - Complete elimination of industrial waste, liner, when compared to heat transferable labels. - greater decoration area, as it allows the labeling of the entire perimeter of the bottle in a single labeling process, facilitating the visual communication of the product and legal information. - extraction of the complete label from the bottle, reducing the contamination of the solution used in the washing tanks, reducing the need for constant changes in this solution -reduction of water consumption.

DESCRIPTION OF THE FIGURES

[032] To complement the present description in order to obtain a better understanding of the characteristics of the present invention and according to a preferred practical realization thereof, the description, attached, is a set of drawings, where, in an exemplified manner, although non-limiting, the following was represented: [033] Figure 1 illustrates a coil with the thermal adhesive label in question;

[034] Figure 2 represents a schematic section of the polymeric film with adhesive, components of the innovated label;

[035] Figure 3 illustrates, by way of example, a schematic automatic equipment for the application of the thermal adhesive label in question, which equipment uses a heating chamber to activate the adhesive on the back of the label; said heating chamber is regulated in innovation for the present invention;

[036] Figure 4 illustrates, by means of a schematic representation, the conventional washing and de-labeling equipment, however with appropriate adjustments to the type of adhesive used in the innovated label.

DETAILED DESCRIPTION OF THE OBJECT

[037] The present invention refers to a "LABEL IN POLYMERIC FILM WITH ADHESIVE TERM APPLIED TO RETURNABLE BOTTLES AND METHOD OF APPLICATION AND REMOVAL OF THE REFERRED LABEL DISPOSABLE RETURNABLE BOTTLES", more precisely a label (10) made of polymeric film, preferably made of polymeric film, preferably (Bi-oriented polypropylene) monolayer with printing (P1) on the face (12) and provided, on the other side (11), with an adhesive term (20) distributed in such a way as to occupy 10 to 100% of the mentioned face (11) of the label (10); said label (10) is supplied in coils (B) for continuous repetition application, presenting a square or other shape in order to be applied to the outer side of plastic bottles and bottles (G), glass or other suitable material by means of equipment labeling (100) on an industrial scale using heat application equipment (102) to activate the adhesive term (20); said thermo-adhesive label (10) / 20) is of the type that can be removed in washing equipment (200).

[038] According to the present invention, the label (10) made of BOPP film (Bi-oriented Polypropylene) is presented in a monolayer of varying thickness between 25 to 36 g / m2, with printing (P1) endowed with colors and / or transparency and / or metallized and / or high quality images and that is supplied in square formats arranged in coils (B). The surface (11) of the BOPP film (10) receives from 2 to 3 g / m2 of thermal adhesive varnish in order to cover 10 to 100% of the face (11), where the thermal adhesive varnish (20) is composed of acrylic resin, water, solvents and additives appearing, when at room temperature, in a glassy state, allowing labels to be wound (B) (10) and, when subjected to high temperature, for example 70 ° C, adopts the state “ glass transition "or" glass transition "starting to adhere to the surface of bottles (G) in PET, BOPP, PE, glass and others through industrial application. Said label (10), can be removed from the surfaces of bottles (G) can industrial washing medium that includes composition (C1) of 100% water, 3% chaotic soda and specific additives, in addition to submerging in this composition (C1) for up to 3 minutes at a temperature of 52 to 56 oC. (10) stands out completely from the bottle (G), without leaving any residue in it, allowing the return of these bottles to the filling process in cycles that can vary from at least 10 packages and 10 returns. [039] The thermal adhesive varnish (20), in a preferred option, uses acrylic resin or thermoplastic EVA and solvents of the type cyclohexane, butanone, water and ammonia, in addition to additives in the form of 2 to 5% carnauba wax and 2 to 7% polypropylene wax. [040] The labeling method (100) on the bottles (G) (See Figure 3) includes the following steps: - unwinding (B) and displacement (101) of the label film (10) with adhesive term (20) in state glassy (cold) at speed (X1); - adhesive heat-activation (102): (i) start of heat-activation with the entry of the label film (10) with adhesive (20) in the heating chamber (C) with an initial temperature (T1) of 35 oC; (ii) termination of the thermoactivation with the exit of the label film (10) with adhesive (20) from the heating chamber (C) with final temperature (T2) between 60 to 130 oC, reaching the state of "glass transition"; - detachment (103) of labels (10) with adhesive (20) thermoactivated by moving the film at speed (X2) greater than speed (X1); - transfer (104) of the labels (10) with thermo-activated adhesive (20) through a cylinder with rotation in speed (X2), promoting the detachment of the label (10) in relation to the adjacent label (10); - application (105) of labels (10) with adhesive (20) thermoactivated on the external faces of bottles (G) that move on a conveyor belt (E) at speed (X2).

[041] The temperature of the adhesive thermoactivation chamber (102) is regulated in proportion to the increase in the labeling speed (X2) in steps (103), (104) and (105).

[042] Once the thermo-adhesive label (10) / (20) is applied to the outer face of the bottle (G), the adhesion is long-lasting (not permanent) and can be removed in industrial washing equipment (200) through the following innovative steps (see figure 4): (i) the bottles (G) with the thermo-adhesive label (10), described in this invention, are sent to the initial sector (S1) of the industrial wash (200) equipped with a tank (Tq1) equipped with a liquid washing composition (C1) comprising 100% water, 3% caustic soda and specific additives; (ii) the washing composition (C1) in the tank (Tq1) being maintained at a temperature of 52 to 60 oC; (iii) the thermal adhesive label (10) adhered to the bottle (G) is kept submerged in the washing composition (C1) for up to 3 (three) minutes; (iv) the thermal adhesive label (10) detached from the bottle (G) is sent by water jets (J1) to a duct (D1), while the bottles go towards the final washing sector (S2) with tank (Tq2 ) water and outlet (S3); (v) the labels (10), in the form of BOPP film (20), are removed by the water jets (J1) are removed from the industrial washing equipment (200) and sent to recycling (RC); (vi) the bottles (G) moving in the outlet sector (S3), clean, sanitized, without label (10) and without any trace of adhesive (20) are sent for storage or new labeling and new packaging.

[043] It will be apparent to those who have a good understanding of this art and field, to which the invention belongs, that several modifications and variations of the examples described and the incorporations are possible in the light of the instructions above. The examples and embodiments disclosed are presented for illustrative purposes only. Other alternative incorporations may include some or all of the features mentioned in this document. Therefore, the intention is to cover all these modifications and alternative incorporations as they may become part of the scope of this invention with extreme effectiveness.

Claims (12)

1) "POLYMERIC FILM LABEL WITH ADHESIVE TERM APPLIED TO RETURNABLE BOTTLES", more precisely a label (10) made of polymeric film, preferably BOPP monolayer with printing (P1) on the face (12) and endowed on the other side (11) , of thermoactive adhesive (20) distributed in such a way as to occupy 10 to 100% of the mentioned face (11) of the label (10); said label (10) is supplied in coils (B) for continuous repetition application, presenting a square or other shape in order to be applied to the outer side of plastic bottles and bottles (G), glass or other suitable material by means of equipment labeling (100) on an industrial scale using heat application equipment (102) to activate the adhesive term (20); said thermo-adhesive label (10) / 20) is of the type that can be removed in washing equipment (200); characterized by the label (10) made of BOPP film in a monolayer with a thickness varying between 25 to 36 g / m2, with printing (P1) endowed with colors and / or transparency and / or metallized and / or high quality images and which is supplied in square formats arranged in coils (B); the surface (11) of the BOPP film (10) receives from 2 to 3 g / m2 of thermo-adhesive varnish (20) which is composed of acrylic resin, water, solvents and additives, when, at room temperature, in a glassy and, when subjected to an elevated temperature of 35 to 130 oC, preferably 70 oC, adopts the state of "glass transition" and can adhere to the surface of bottles (G) in PET, BOPP, PE, glass and others through industrial application . 2) "POLYMERIC FILM LABEL WITH ADHESIVE TERM APPLIED TO RETURNABLE BOTTLES", according to claim 1, characterized in that the label (10), can be removed from the surfaces of the bottles (G) can include industrial washing medium that includes composition ( C1) 100% water, 3% caustic soda and specific additives, in addition to submersion in this composition (C1) for up to 3 minutes at a temperature of 52 to 56 oC. 3) "LABEL IN POLYMERIC FILM WITH ADHESIVE TERM APPLIED TO RETURNABLE BOTTLES", according to claim 1 and in a preferential option, characterized by the use of the thermoplastic varnish (20) in its composition, acrylic resin or thermoplastic EVA. 4) "POLYMERIC FILM LABEL WITH ADHESIVE TERM APPLIED TO RETURNABLE BOTTLES", according to claim 1 and in a preferential option, characterized in that the thermo-adhesive varnish (20) uses, in its composition, solvents of the type cyclohexane, butanone, water and ammonia. 5) "POLYMERIC FILM LABEL WITH ADHESIVE TERM APPLIED TO RETURNABLE BOTTLES", according to claim 1 and in a preferential option, characterized in that the thermoset varnish (20) uses, in its composition, additives in the form of 2 to 5 % carnauba wax and 2 to 7% polypropylene wax. 6) "POLYMERIC FILM LABEL WITH ADHESIVE TERM APPLIED TO RETURNABLE BOTTLES", according to claims 1 and 2, characterized in that the thermal adhesive varnish (20) completely detaches from the outer surface of the bottle (G) that remains devoid of any residue. 7) "METHOD OF APPLYING THE LABEL TO THE RETURNABLE BOTTLE", according to claim 1, characterized in that the label (10) with thermo-adhesive varnish (20) comprises the following characteristics in the step of activating the adhesive (102) when using the method application on the outer face of the bottle (G): (i) start of thermoactivation with the entry of the label film (10) with adhesive (20) in the heating chamber (C) with an initial temperature (T1) of 35 oC; (ii) termination of the thermoactivation with the exit of the label film (10) with adhesive (20) from the heating chamber (C) with final temperature (T2) between 60 to 130 oC, reaching the state of "glass transition". 8) "METHOD" according to claims 1 and 7 and in a preferred option, characterized in that the outlet temperature (T2) of the "glass transition" state of the adhesive (20) in the label film (10) is 70 oC. 9) "RETURNABLE BOTTLE LABEL REMOVAL METHOD", according to claim 1, the method of removing the label (10) with thermo adhesive adhesive (20) in industrial washing equipment (200) is characterized by comprising the following steps: (i) the bottles (G) with the label (10) and thermo adhesive (20) are sent to the initial sector (S1) of the industrial washing (200) equipped with a tank (Tq1) equipped with the liquid washing composition (Cl) comprising 100% water, 3% caustic soda and specific additives; (ii) the washing composition (Cl) in the tank (Tql) being maintained at a temperature of 50 to 90 oC; (iii) the thermo-adhesive label (10) adhered to the bottle (G) is kept submerged in the washing composition (Cl) for up to 3 (three) minutes; (iv) the thermo-adhesive label (10) detached from the bottle (G) is sent by air jets (Jl) to a duct (Dl), while the bottles go towards the final washing sector (S2) with tank (Tq2) water and outlet (S3); (v) the labels (10), in the form of a BOPP film, are removed by the water jets (Jl) in order to be expelled from the industrial washing equipment (200) and sent to recycling (RC); (vi) the bottles (G) moving in the outlet sector (S3), clean, sanitized, without label (10) and without any trace of adhesive (20) are sent for storage or new labeling and new filling. 10) "POLYMERIC FILM LABEL WITH ADHESIVE TERM APPLIED TO RETURNABLE BOTTLES", characterized in that the label (l0) with thermal adhesive sticker (20) of the previous claims is applied to returnable bottles (G) of the type "REF PET". 11) "POLYMERIC FILM LABEL WITH ADHESIVE TERM APPLIED TO RETURNABLE BOTTLES", characterized in that the thermo-adhesive label (10) / (20) of claims 1 to 5 is applied to returnable glass bottles (G) or similar. 12) "POLYMERIC FILM LABEL WITH ADHESIVE TERM APPLIED TO RETURNABLE BOTTLES", characterized by the label (l0) with thermal adhesive varnish (20) of claim 1 associated with the application and removal methods of claims 7, 8 and 9, allowing return from bottles (G) to the washing and filling process in cycles that can vary from at least 10 returns and 10 bottles.