MXPA01004764A - Heat-transfer label including a phenoxy adhesive layer - Google Patents

Abstract

A heat-tranfer label suitable for decorating silane-treated glass article is disclosed. The label includes a support portion (13) in the form of a sheet of paper overcoated with a release layer of polyethylene, a skim coat (19) of wax overcoated onto the polyethylene release layer, and a transfer portion (21) which includes a cross-linked phenoxy protective lacquer printed onto the skim coat, a polyester ink layer printed onto the protective lacquer layer, and an adhesive layer (27) printed onto the ink layer, as well as onto any exposed portions of the underlying protective lacquer layer and onto a surrounding area of the skim coat. The adhesive layer comprises a phenoxy resin of the type present in a water-based phenoxy resin dispersion.

Description

/ - 1 - HEAT TRANSFER LABEL THAT INCLUDES A LAYER ADHESIVE FENOXI BACKGROUND OF THE INVENTION The present invention relates generally to heat transfer labels and more particularly to heat transfer labels that include a phenoxy adhesive layer. Heat transfer labels are commonly used in the decoration or labeling of commercial items, such as without limitation, containers for beverages that (include alcoholic beverages such as beer), essential oils, detergents, hazardous chemicals as well as health aids and beauty. As can easily be appreciated, heat transfer labels desirably must be resistant to abrasion and chemical effects in order to avoid the loss of information on the label and desirably possess good adhesion to the articles to which they are subjected. Are fixed. One of the first types of heat transfer label is described in US Pat. No. 3,616,015, whose inventor is Kingston, which was published in October 1971, and which is incorporated herein by reference. In the aforementioned patent, a heat transfer label comprising a sheet or roll of paper, a wax release layer fixed to the paper sheet and a printed ink design layer on the release layer of the paper is described. wax. In the process of labeling by heat transfer, the roll transporting the label is subjected to heat, and the label is pressed on an article with the ink design cover making direct contact with the article. As the sheet of paper is subjected to heat, the wax layer begins to melt so that the sheet of paper can be released from the ink design layer, a portion of the wax layer is transferred with the design layer of ink and a portion of the wax layer remains with the sheet of paper. After the transfer of the design to the article, the sheet of paper is removed immediately, leaving a firmly fixed design to the article and the wax being transferred with it is exposed to the environment. The wax layer in this manner is designed to carry out the purposes: (1) to provide release of the ink design from the roll before the application of heat to the roll, - and (2) to form a protective layer over the ink design transferred. After transferring the label to the article, the transferred wax release layer is typically subjected to a subsequent flaming technique which improves the optical clarity of the wax protective layer (thereby allowing the ink design layer below it is better observed) and which improves the protective properties of the release of transferred wax. Many of the heat transfer labels include, in addition to the layers described above, an adhesive layer (comprising, for example, a polyamide or a polyester adhesive) deposited on the ink design to facilitate adhesion of the label on the Receiving article. An example of a heat transfer label having an adhesive layer is described in US Pat. No. 4,548,857, whose inventor is Galante, which was published on October 22, 1985 and which is incorporated herein by reference. Additionally, many heat transfer labels additionally include a protective lacquer layer interposed between the wax release layer and the ink layer. An example of such a label is described in US Pat. No. 4,426,422, whose inventor is Daniels, which was published on January 17, 1984 and which is incorporated herein by reference. A phenomenon that has been observed with heat transfer labels of the type described above that contain a wax release layer is that, very often, a fogging or "halo" may be observed on the transferred label when the transfer is made on transparent materials. This "halo" effect, which persists despite the subsequent flaming and which may impair the appearance of the label, is caused by the wax coating around the outer limits of the transferred ink design layer. The fogging due to the wax release layer may also appear in areas of "open copy" of the label, ie areas of the label where ink is not present between the layers of adhesive and protective lacquer, and may also be present. harm the appearance of the label. In addition, and in relation to the problem mentioned before fogging, when the heat transfer labels of the type described above are applied to dark-colored containers, I read outer wax layer of the label often appears as a whitish coating on the container, which has an undesirable effect in many cases. In addition, scrapes and abrasions similar to the outer wax layer of the label can be easily presented and easily detected. Accordingly, to solve the problems mentioned above, considerable effort has been made to replace and eliminate the need for a wax release layer. One such heat transfer label without wax is described in US Pat.

No. 3,922,435, whose inventor is Asnes, which was published on November 25, 1975 and which is incorporated herein by reference. In the patent mentioned above, the wax layer is replaced with a non-wax resin layer. This non-wax resinous layer is referred to in this patent as a dry release since it is not transferred to the article together with the ink design layer. In a preferred embodiment of the patent, the non-wax resinous layer comprises a thermosetting polymer resin, such as the crosslinked resins selected from the group consisting of acrylic resins, polyamide resins, polyester resins, vinyl resins and epoxy resins. . Another example of a heat transfer label without wax is described in US Pat. No. 4,935,300, the inventors of which are Parker et al., Which was published on June 19, 1990 and which is incorporated herein by reference. In the above-mentioned patent, the label, which is claimed to be particularly suitable for use in high density polyethylene, polypropylene, polystyrene, polyvinyl chloride and polyethylene terephthalate surfaces or in packages, comprises a roll paper carrier which is overcoated with a layer of polyethylene. A protective lacquer layer comprising a polyester resin and a relatively small amount of an oil that does not dry is printed on the polyethylene layer. An ink design layer comprising a resinous binder base which is selected from the group consisting of polyvinyl chloride, acrylics, polyamides and nitrocellulose, then printed on the protective lacquer layer. A layer of heat-activatable adhesive comprising a thermoplastic polyamide adhesive is then printed on the ink design layer. Although the wax-free heat transfer label described above substantially reduces the wax-related effects discussed previously, such a label does not possess much the same release characteristics as heat transfer labels containing a wax release layer. Accordingly, another type of heat transfer label differs from the heat transfer label described in US Pat. No. 4,935,300, only in which is interposed a very thin layer or "top cap" of a wax-like material that is interposed between the polyethylene release layer and the protective lacquer layer to improve the release of the protective lacquer from the carrier roll coated with polyethylene. The thickness of the finishing layer corresponds to approximately 45-181 g (0.1-0.4 pounds) of the wax-like material dispersed over approximately 278 m2 (3000 square feet) of polyethylene release layer. An example of the aforementioned type of heat transfer label which has been sold by the assignee of the present application for use in labeling polypropylene bottle covers, comprises a paper carrier roll coated with a polyethylene layer.

A finishing layer is applied as a coating on the polyethylene layer. A protective lacquer layer comprising vinyl and polyether resins is printed on the finishing layer. An ink design layer comprising vinyl and polyester resins is printed on the protective lacquer layer. On the ink design and the protective lacquer layers a heat activatable adhesive layer is printed comprising: an acrylic resin, solvent-soluble chlorinated propylene and a plasticizer. The acrylic resin is a butyl methacrylate resin, such as ELVACITEMR 2045, which is commercially available from ICI Acrylics Inc. (Wilmington, DE). Solvent soluble chlorinated polypropylene is commercially available from Eastman Chemical Products, Inc. (Kingsport, TN) as a chlorinated polyolefin CP-343-1. The plasticizer is a glycerin tribenzoate such as BENZOFLEXM ™ S-404, which is commercially available from Velsicol Chemical Corporation (Chicago, IL).

In the US patent No. 5,824,176, the inventors of which are Stein et al., Which was published on October 20, 1998 and which is incorporated herein by reference, discloses a composition for use in the preparation of an adhesive layer and a transfer label. by heat that includes such an adhesive layer. In one embodiment, the label is designed for use in glass containers treated with silane of the type that are subjected to pasteurization conditions. The label includes a support portion and a transfer portion, the transfer portion being placed on the support portion. The support portion includes a sheet of paper coated with a polyethylene release layer. The transfer portion includes a layer of protective lacquer phenoxy soluble in organic solvent, a layer of solvent ink soluble in organic solvent on the protective lacquer layer, and an acrylic adhesive layer on the ink layer. The adhesive layer is formed by depositing on the ink layer, for example, by gravure, a composition comprising a dispersion or emulsion of acrylic resin based on water, isopropyl alcohol and water, and then evaporating the volatile components of the composition to leave an acrylic film In the US patent No. 5,800,656, the inventors of which are Geurtsen et al., Which was published on September 1, 1998 and which is incorporated herein by reference, discloses a heat transfer label that includes a layer of phenoxy lacquer. In one embodiment, the label is designed for use in glass containers treated with silane of the type that are subjected to pasteurization conditions. The label includes a support portion and a transfer portion, the transfer portion being placed on the support portion. The support portion includes a sheet of paper coated with a polyethylene release layer. The transfer portion includes a layer of protective lacquer of phenoxy resin soluble in organic solvent, an ink layer of polyester resin soluble in organic solvent on the protective lacquer layer and a layer of acrylic adhesive resin dispersible in water on the layer of ink. In the application for US patent. Do not give Series 09 / 093,150, currently pending, commonly assigned, application which is incorporated herein by reference, discloses a heat transfer label suitable for use in the decoration of glassware. According to one embodiment, the label is capable of withstanding pasteurization conditions and includes: (a) a support portion in the form of a sheet of paper coated with a polyethylene release layer, (b) a wax topcoat which is applied as a coating on the polyethylene release layer and (c) a transfer portion, the transfer portion includes a layer of crosslinked phenoxy-protective lacquer printed on the finishing layer, a layer of polyester ink printed on the layer of protective lacquer, and a first adhesive layer printed on the ink layer and on any exposed portion of the underlying protective lacquer layer. The above-mentioned crosslinked phenoxy resin comprises a solvent-soluble phenoxy resin of the formula wherein the solvent-soluble phenoxy resin is crosslinked by a partially methylated formaldehyde melamine resin. The first adhesive layer mentioned above comprises an acrylic adhesive resin of the type present in a water-based adhesive dispersion or in a water-based adhesive emulsion (for example the emulsion RHOPLEXMR GL-618) and which also comprises an alcohol, a pH adjusting agent to set the pH of the adhesive composition at about 9-10 and a surfactant in the form of dioctylsodium sulfosuccinate (for example Triton GR-5M). The label mentioned above has been used to decorate glass containers treated with silane and, to a large extent, they have proved to be generally satisfactory in terms of resistance to rubbing and have the capacity to withstand pasteurization conditions (for example, where glass containers are used to pack beer, that is, pasteurized in glass containers. However, the present inventors have observed that when used to label glass containers treated with thick-walled silane, such as wine bottles or other heavy glass bottles, the object label often has the tendency to be rubbed or damaged by the bottle-to-bottle or bottle-to-machinery contact during filling, packaging or transport operations.Therefore, there is a need for a label that is suitable for use in glass containers treated with silane, which exhibits improved strength to the rubbing and that can withstand pasteurization conditions Other patents and publications of interest in relation to the use of heat transfer labels include U.S. Patent No. 4,927,709, the inventors of which are Parker et al., which was published on May 22, 1990; and PCT Application No. PCT / US97 / 11309, published January 8, 1998, both incorporated herein by reference.

BRIEF DESCRIPTION OF THE INVENTION An object of the present invention is to provide a new heat transfer label. Another object of the present invention is to provide a heat transfer label that solves at least some of the problems discussed above in connection with existing heat transfer labels. In accordance with one aspect of the present invention, a heat transfer label is provided, the heat transfer label comprises: (a) a support portion, - and (b) a transfer portion on the support portion for Transferring the transfer portion from the support portion to an article by applying heat to the support portion while the transfer portion is placed in contact with the article, the transfer portion comprising: (i) a protective lacquer layer; (ii) an ink layer on the protective lacquer layer; and (iii) an adhesive layer on the ink and protective lacquer layers, the adhesive layer comprising a phenoxy resin. In a preferred embodiment, the phenoxy resin of the adhesive layer is a phenoxy resin of the type present in a water-based phenoxy resin dispersion (for example PAPHENHR PKHW-34, InChem Corp.), and the adhesive layer is preferably manufactured by gravure on its underlying layers of a composition comprising the phenoxy resin dispersion based on water, isopropyl alcohol and water, and then evaporating the volatile components of the composition to leave a phenoxy film. In addition, such an ink layer preferably comprises a polyester ink or a phenoxy ink, or both, and the protective lacquer layer preferably comprises a cross-linked phenoxy resin, the cross-linked phenoxy resin is preferably manufactured by crosslinking a phenoxy resin soluble in a solvent. the following chemical formula: to 123 with a melamine formaldehyde resin. The heat transfer label mentioned above preferably further comprises a wax-like finishing layer, the wax-like finishing layer is interposed between the support portion and the transfer portion, wherein the transfer portion preferably comprises coated paper with polyethylene. The aforementioned label is particularly suitable for use in the decoration of glass containers treated with sila.no, especially glass containers treated with silane subjected to pasteurization conditions; however, it should be understood that such a label is not limited in its use to decorating glass containers treated with silane but can be used to decorate other types of containers including, but not limited to aluminum cans, containers of plastic and similar. (For purposes of the present specification and claims, the term "silane-treated glass containers" is intended to encompass glass containers that have been previously treated, prior to silane treatment, with oleic acid or stearate (regardless of whether the treatment previously removed before treatment with silane) and those that have not previously been treated with silane treatment). The subject heat transfer label, when used to decorate silane-treated glass containers, has shown improved rub resistance compared to the heat transfer label described above comprising a layer of cross-linked phenoxy protective coating, a layer of polyester ink and an adhesive layer comprising an acrylic resin of the type present in a dispersion or emulsion of acrylic resin based on water. In addition, such a heat transfer label, when used to decorate glass containers treated with silane, has shown an ability to withstand undergoing pasteurization conditions for a longer period of time than the aforementioned label comprising a Acrylic adhesive. In addition to addressing a heat transfer label described earlier, the present invention is also directed to a transfer portion of the heat transfer label comprising a phenoxy adhesive layer, with methods for making the heat transfer label and the transfer portion and with a composition used to form the phenoxy adhesive layer of the heat transfer label and the transfer portion. In addition, the present invention is also directed to a method of decorating an article, such as a glass container treated with silane, using a heat transfer label. For purposes of the present specification and claims, it is to be understood that certain terms used herein such as "on" or "on", when used to indicate the relative positions of two or more layers of a heat transfer label, are they mainly use to indicate such relative positions in the context of how these layers are placed prior to the transfer of the transfer portion of the label to an article since, after the transfer, the distribution of layers is reversed as those layers which they are further removed from the associated support sheet now they are closer to the labeled article. The additional objects, as well as the features, advantages and aspects of the present invention will be set forth in part in the description which follows and in part will be apparent from the description or may be learned by the practice of the invention. In the description, reference is made to the appended drawings which are part of the same and which are shown by way of illustration of specific embodiments for carrying out the invention. These embodiments will be described in sufficient detail to enable a person skilled in the art to practice the invention, and it should be understood that other embodiments may be used and that structural changes may be made without departing from the scope of the invention. Therefore, the following detailed description should not be taken in a restrictive sense, and the scope of the present invention is better defined by the appended claims.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are incorporated herein and constitute a part of this specification, illustrate preferred embodiments of the invention and, together with the description, serve to explain the principles of the invention. In the drawings, where like reference numbers represent similar parts: Figure 1 is a schematic sectional view of a heat transfer label that is particularly suitable, but is not limited to the use in the decoration of treated glass containers with silane of the type of which are subsequently subjected to pasteurization conditions, the heat transfer label is constructed in accordance with the teachings of the present invention, and Figure 2 is a schematic sectional view of the transfer label by heat which is particularly suitable, but which is not limited to the use in the decoration of glass containers treated with silane of the type which are subsequently not subjected to pasteurization conditions, the heat transfer label is constructed according to the teachings of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED MODALITIES Referring now to Figure 1, a schematic sectional view of the heat transfer label is shown which is particularly suitable for use in, but not limited to, the decoration of glass containers treated by silane of the type of which , after decorating and refilling, they are subjected to pasteurization conditions, the heat transfer label is constructed in accordance with the teachings of the present invention and is generally represented by the reference number 11. The label 11 comprises a portion 13 of support. The support portion 13, in turn, comprises a carrier roll 15 coated with a layer 17, preferably made of polyethylene. The carrier roll 15 is typically made of paper or a similar suitable substrate. The details of the polyethylene layer 17 are described in US Pat. Nos. 4,935,300 and 4,927,709, the description of which, as indicated above, is incorporated herein by reference. The label 11 also comprises a finishing layer 19 of the type described above, the finishing layer being directly coated on the upper part of the whole of the polyethylene layer 17. During the transfer of the label, a portion of the finishing layer 19 is typically transferred together with the transfer portion of the label 11 onto the article to be decorated, and a portion of the finishing layer 19 remains in the top of the polyethylene layer 17. The tag 11 further comprises a transfer portion 21. In turn, the transfer portion 21 includes: (i) a layer 23 of protective lacquer printed directly on top of a portion of the finish layer 19, (ii) a layer 25 of ink design printed on an area desired of layer 23 of lacquer, and (iii) a heat activatable adhesive layer 27 printed on the design layer 25, any exposed portion of the lacquer layer 23 and the surrounding portion of the finish layer 19.

The protective lacquer layer 23 preferably comprises a crosslinked phenoxy lacquer resin; however, it should be understood that other types of lacquer resins are also suitable for use in layer 23, especially if the label II is used for applications other than the decoration of glass articles treated with silane subjected to pasteurization conditions. Examples of phenoxy lacquer resins suitable for use in the above-mentioned crosslinked phenoxy resin include the phenoxy resins UCARM® Phenoxy Resins (Union Carbide Corporation, Hackensack, NJ), which have the following chemical structure: A particularly preferred UCARMR phenoxy resin is PKHH, a medium weight grade of the above structure which, at 40% solids by weight in methyl ethyl ketone (MEK) has a solution viscosity of 4500 to 7000 mPa • s (cP). Examples of suitable crosslinking agents for the crosslinking of the phenoxy resin mentioned above include partially methylated melamine-formaldehyde resins of the type present in the CYMEL 300 series of partially methylated melamine-formaldehyde resin solutions (Cytec, Industries, Inc., West Paterson, NJ) and, in particular, the partially methylated melamine-formaldehyde resin solution CYMEL 370 (88% ± 2% non-volatile fractions, iBuOH solvent). Preferably, the solids of the CYMEL resin solution 370 mentioned above constitute at most about 5% by weight of the lacquer layer 23 (the remainder of the lacquer layer 23 is the phenoxy resin mentioned above) as the present inventors have discovered that Excess amounts of CYMEL 370 tend to cause the lacquer layer 23 to undesirably adhere to the support portion 13 during the transfer of the label. An advantage of using a melamine-formaldehyde crosslinker mentioned above, position to other types of crosslinkers, is that such a crosslinker does not require the use of a catalyst, rather, it is heat activatable and this heat activation thereof can be carried out during the usual "post-curing" stage (ie, heating the decorated package to approximately 215 ° C (420 ° F) for approximately 20 minutes) to which the decorated package will usually be subjected in any way after of the transfer of the label. It should be noted, however, that the present invention is not limited to such heat-activatable crosslinkers. To form the lacquer layer 23, a lacquer composition comprising the phenoxy lacquer resin identified above, a suitable cross-linking agent and one or more suitable volatile solvents is deposited on a desired area of the finishing layer 19, preferably by gravure or a similar technique. After the deposition of the lacquer composition on the desired area of the finishing layer, the solvent or volatile solvents evaporate, leaving only the non-volatile components thereof constituting the lacquer layer 23. In a preferred embodiment, the lacquer composition comprises approximately 20% by weight, PKHH; about 1% by weight, of CYMEL 370 resin solution; about 59% by weight of methyl ethyl ketone; and about 20% by weight of toluene. The ink design layer 25 of the transfer portion 21 preferably comprises a polyester ink or a phenoxy ink, or both. Other types of ink are also suitable, based on the composition of the layer 23 based on whether the label to be used for applications other than glass articles treated with silane subjected to space location conditions. The ink design layer 25 is formed in the conventional manner by deposition, by gravure or the like, of an ink composition comprising a resin of the type described above, a suitable pigment or dye and one or more suitable volatile solvents (typically solvents). non-polar organic) over one or more desired areas of the lacquer layer 23. After the application of the ink composition on the lacquer layer 23, the volatile solvent components of the ink solvent system evaporate, leaving only the non-volatile ink components to form the layer 25. An example of a Suitable resin for use in the formation of a polyester ink is viTELMR 2700 (Shell Chemical Company, Akron, OH) - a copolyester resin having a high tensile strength (48263 kPa (7000 psi) and a low elongation ( 4% elongation.) A polyester ink composition based on ViTELMR 2700 can comprise, by weight, 18% ViTELMR 2700, 6% pigment, 30.4% n-propyl acetate (NP Ac) and 45.6% toluene As can be easily appreciated, ViTELM 2700 is by no means the only polyester resin that can be used to formulate a polyester ink and solvent systems in addition to an NP Ac: toluene system, which may be suitable for use with ViTELMR 270 0 as well as with other polyester resins. The adhesive cap 27 of the transfer portion 21 comprises a phenoxy adhesive resin of the type present in a water-based phenoxy dispersion. The adhesive layer 27 is preferably formed by deposition, by gravure or the like, on the ink layer 25, the exposed portions of the lacquer layer 23 and the surrounding area of the finishing layer 19 and the adhesive composition preferably comprise a phenoxy dispersion. based on water, alcohol and water. (The adhesive composition may also include a crosslinker although the inclusion of such a crosslinker is not essential, particularly when the protective lacquer layer 23 includes a crosslinker). After the deposition of the adhesive composition on the underlying layers of the label II, the volatile components of the composition (eg water, alcohol) evaporate leaving only the non-volatile solid components thereof to form the layer 27. A preferred example of the water-based phenoxy dispersion is PAPHENHR PKHW-34 (InChem Corp., South Carolina), an anionically stabilized aqueous colloidal dispersion of a solid-grade phenoxy resin, the dispersion has a solids content of about 34% in weight, a pH of approximately 7.2, a Brookfield viscosity at 25 ° C and approximately 1100 cP, a weight of 1.1 kg / 1 (8.80 pounds per gallon), an average particle size of approximately 0.09 microns, a flash point (PMCC) ) of approximately 60 ° C (141 ° F) and a freezing point of approximately -4 ° C. PAPHENMR PKHW-34 provides both hydroxyl groups and carboxyl groups for subsequent crosslinking at temperatures • high. In a preferred embodiment, the adhesive composition comprises approximately 66.5% by weight of PAPHENMR PKHW dispersion; about 16.75% by weight of isopropyl alcohol and about 16.75% by weight of water. Preferably, the water-soluble phenoxy dispersion is stirred slowly while adding to it the • combination of isopropyl alcohol and water. A trace amount of a UV dye can also be included in the composition to facilitate alignment of the layer during printing. The label 11 can be used in the conventional manner by contacting the adhesive layer 27 with a desired article, such as a glass container treated with silane, while applying sufficient heat to the bottom of the carrier roll 15 in a manner that causes Serving transfer (and likewise a portion of the finishing layer 19) are released from the support portion 13 and in a manner that cause the adhesive layer 27 to be thermally activated by attachment to the desired article. The subsequent curing process and any other process step Conventional can be carried out in the usual manner.

The present inventors have observed that, when the label 11 is used to decorate glass containers treated with silane, a good degree of label adhesion is obtained (i.e., about 4-6 h, as measured by standard ASTM D3363-92a). for hardness of film on a substrate). In addition, the aforementioned problem of marring an open copy, which is often encountered when the labeled containers are subjected to pasteurization conditions (even for prolonged periods such as 1 hour) is substantially absent in the present case. In addition, the present inventors have observed that the present label possesses a high degree of chemical abrasion and resistance to rubbing. Referring now to Figure 2, there is shown a schematic sectional view of a heat transfer label that is particularly suitable for use in, but not limited to, the decoration of glass containers treated with silane of the type that is not subject to pasteurization conditions, the heat transfer label is constructed in accordance with the teachings of the present invention and is generally present with the reference number III. The label 111 is similar in many respects to the label 11, the label III includes a support portion 113 comprising a carrier roll 115 coated with a polyethylene layer 117 and a finishing layer 119 coated directly on the top over the entire of the polyethylene layer 17. In addition, the label 111 includes a transfer portion 121, the transfer portion 121 includes a layer 123 of protective lacquer printed directly on top of a portion of the finish layer 119, (ii) a layer 125 of ink design printed on a desired area of the lacquer layer 123, and (iii) a layer 127 of heat activatable adhesive printed on the design layer 125, any exposed portion of the lacquer layer 123 and a surrounding portion of the finish layer 119. The protective coat layer 123 and the ink design layer 125 of the label 111 are identical to the lacquer layer 23 and the ink design layer 25, respectively. The label lll differs from the label 11 only in that the adhesive layer 127 of the label III is identical in composition to the layer 123 of the crosslinked phenoxy layer. The label 111 is used in the same manner as the label 11, except that the label III is not as suitable as the label 11 for articles to be subjected to pasteurization conditions. (In other words, label 111 may become more tarnished when subjected to pasteurization conditions compared to label 11, however, label III will still adhere well and exhibit good abrasion and rub resistance. ). According to another embodiment of the present invention (not shown), the label 11 is modified so that the layer 23 of protective lacquer is replaced with a layer identical in composition to the adhesive layer 27. The embodiments of the present invention mentioned herein are intended to be exemplary only and those skilled in the art. The technique will be capable of making numerous variations and modifications thereto without departing from the spirit of the present invention. All such variations and modifications are considered within the scope of the present invention as defined by the appended claims thereto.

Claims (35)

1. CLAIMS 1. A heat transfer label, • characterized in that it comprises: (a) a support portion, - and (b) a transfer portion on the support portion for the transfer of the transfer portion from the support portion to an article before the application of heat to the support portion while the transfer portion is placed in contact with the article, the • transfer portion comprises: (i) a protective lacquer layer; (ii) an ink layer on the protective lacquer layer; and (iii) a layer of adhesive on the ink and protective lacquer layers, the adhesive layer comprises a phenoxy resin.
2. 2. The heat transfer label, according to claim 1, characterized in that it further comprises a finishing layer similar to wax, the wax-like finishing layer is interposed between the support portion and the transfer portion.
3. 3. The heat transfer label according to claim 1, characterized in that the phenoxy resin is a phenoxy resin of the type present in a water-soluble phenoxy dispersion.
4. 4. The heat transfer label, according to claim 3, characterized in that the water-soluble phenoxy dispersion is an anionically stabilized aqueous colloidal dispersion of a solid grade phenoxy resin having both hydroxyl groups and carboxyl groups, the anionically stabilized aqueous colloidal dispersion it has a solids content of about 34% by weight, a pH of about 7.2, a Brookfield viscosity at 25 ° C of about 1100 cP, a weight of 1.05 kg / 1 (8.8 pounds per gallon) an average particle size of about 0.09 microns, a flash point (PMCC) of approximately 60 ° C (141 ° F) and a lyophilization point of approximately -4 ° C.
5. 5. The heat transfer label, according to claim 4, characterized in that the adhesive layer is manufactured by deposition on the ink and protective lacquer layers of a composition comprising approximately 66.5% by weight of the anionically stabilized aqueous colloidal dispersion, about 16.75% by weight of isopropyl alcohol and about 16.75% by weight of water and then evaporating the components • volatiles of it.
6. 6. The heat transfer label, according to claim 1, characterized in that the ink layer comprises at least one of a polyester ink and a phenoxy ink. • The heat transfer label, according to claim 1, characterized in that the protective lacquer layer comprises a cross-linked phenoxy resin. 8. The heat transfer label, according to claim 6, characterized in that the protective lacquer layer comprises a solvent-soluble phenoxy resin. 9. The heat transfer label according to claim 3, characterized in that the protective lacquer layer comprises a cross-linked phenoxy resin and wherein the ink layer comprises at least 25 minus one of a polyester ink and a phenoxy ink. 10. The heat transfer label, according to claim 9, characterized in that the crosslinked phenoxy resin is manufactured by crosslinking a • solvent-soluble phenoxy resin that has the following chemical structure: 11. The heat transfer label, according to claim 10, characterized in that 15 the solvent-soluble phenoxy resin, before cross-linking, has a solution viscosity of 4500 to 7000 mPa-s (cP) at 40% solids, by weight, in methyl ethyl ketone. 12. The heat transfer label according to claim 11, characterized in that the solvent-soluble phenoxy resin is crosslinked using a melamine-formaldehyde resin. 13. The heat transfer label according to claim 12, characterized in that the melamine-formaldehyde resin is a partially methylated melamine-formaldehyde resin. 14. The heat transfer label according to claim 13, characterized in that the partially methylated melamine-formaldehyde resin constitutes at most about 5% by weight of the protective lacquer layer. 15. The heat transfer label, according to claim 1, characterized in that the phenoxy resin is a crosslinked phenoxy resin. 16. The heat transfer label according to claim 15, characterized in that the crosslinked phenoxy resin is prepared by crosslinking a phenoxy resin. soluble in solvent that has the following chemical structure: to 123 17. The heat transfer label, according to claim 16, characterized in that the solvent-soluble phenoxy resin, before crosslinking, has a solution viscosity of 4500 to 7000 mPa • s (cP) at 40% solids, by weight , in methyl ethyl ketone. 18. The heat transfer label, according to claim 17, characterized in that the solvent-soluble phenoxy resin is crosslinked using a melamine-formaldehyde resin. 19. The heat transfer label, according to claim 18, characterized in that the melamine-formaldehyde resin is a partially methylated melamine-formaldehyde resin. 20. The heat transfer label, according to claim 19, characterized in that the partially methylated melamine-formaldehyde resin constitutes at most about 5% by weight of the adhesive layer. 21. The heat transfer label, according to claim 1, characterized in that the phenoxy resin is a phenoxy resin soluble in solvent. 22. The heat transfer label according to claim 21, characterized in that the protective lacquer layer comprises a crosslinked phenoxy resin and wherein the ink layer comprises at least one of a polyester ink and a phenoxy ink. 23. A transfer portion of a heat transfer label, the transfer portion is characterized in that it comprises: (a) an ink design layer, - and (b) an adhesive layer placed over the ink design layer, the layer adhesive comprises a phenoxy resin. 24. The transfer portion, according to claim 23, characterized in that the phenoxy resin is a phenoxy resin of the type present in a water-soluble phenoxy dispersion. 25. The transfer portion, according to claim 24, characterized in that the water soluble phenoxy dispersion is an anionically stabilized aqueous colloidal dispersion of a solid grade phenoxy resin having both hydroxyl groups and carboxyl groups, the anionically stabilized aqueous colloidal dispersion has a solids content of about 34% by weight, a pH of about 7.2, a Brookfield viscosity at 25 ° C of about 1100 cP, a weight of 1.05 kg / 1 (8.80 pounds per gallon), an average particle size of about 0.09 micrometers, a flash point of approximately 60 ° C (141 ° F) and a freezing point of approximately -4 ° C. 26. The transfer portion, according to claim 24, characterized in that the ink design layer comprises at least one of a polyester ink and a phenoxy ink. 27. The transfer portion, according to claim 26, characterized in that it also comprises a layer of protective lacquer, the protective lacquer layer comprises a cross-linked phenoxy resin, the ink design layer is placed on the protective lacquer layer. 28. The transfer portion, according to claim 23, characterized in that the phenoxy resin is a cross-linked phenoxy resin. 29. The transfer portion, according to claim 28, characterized in that the crosslinked phenoxy resin is made by cross-linking a solvent-soluble phenoxy resin having the following chemical structure: wherein the solvent soluble phenoxy resin is crosslinked using a melamine-formaldehyde resin. 30. The transfer portion, according to claim 29, characterized in that the ink design layer comprises at least one of a polyester ink and a phenoxy ink. 31. The transfer portion, according to claim 30, characterized in that it also comprises a layer of protective lacquer, the protective lacquer layer comprises a cross-linked phenoxy resin, the ink design layer is placed on the lacquer layer 25 protective. 32 A method for decorating an article, the method is characterized in that it comprises the steps of: (a) providing a transfer label for heat, the labeling of goods by cal or comprises .- (i) a support portion, and (ii) a transfer portion on the support portion for transferring the transfer portion from the support portion to an article by applying heat to the support portion while the transfer portion is placed on the support portion. contact with the article, the transfer portion comprises a layer of protective lacquer, an ink design layer on the protective lacquer layer and an adhesive layer on the layers of ink and protective lacquer, the adhesive layer comprising a phenoxy resin; and (b) transferring the transfer portion from the support portion to the article. 33. The method according to claim 32, characterized in that the article is a glass container treated with silane and wherein the phenoxy resin is a phenoxy resin of the type present in a water-soluble phenoxy dispersion. 34. The method according to claim 33, characterized in that it further comprises, after the transfer step, the step of subjecting the glass container treated with decorated silane to pasteurization conditions. 35. The method according to claim 32, characterized in that the phenoxy resin is a phenoxy resin soluble in crosslinked solvent.