Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65C—LABELLING OR TAGGING MACHINES, APPARATUS, OR PROCESSES
  • B65C9/00—Details of labelling machines or apparatus
  • B65C9/20—Gluing the labels or articles
  • B65C9/22—Gluing the labels or articles by wetting, e.g. by applying liquid glue or a liquid to a dry glue coating
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65C—LABELLING OR TAGGING MACHINES, APPARATUS, OR PROCESSES
  • B65C9/00—Details of labelling machines or apparatus
  • B65C9/0015—Preparing the labels or articles, e.g. smoothing, removing air bubbles
• • C—CHEMISTRY; METALLURGY
  • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
  • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
  • C09J7/00—Adhesives in the form of films or foils
  • C09J7/20—Adhesives in the form of films or foils characterised by their carriers
  • C09J7/22—Plastics; Metallised plastics
• • C—CHEMISTRY; METALLURGY
  • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
  • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
  • C09J7/00—Adhesives in the form of films or foils
  • C09J7/40—Adhesives in the form of films or foils characterised by release liners
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65C—LABELLING OR TAGGING MACHINES, APPARATUS, OR PROCESSES
  • B65C9/00—Details of labelling machines or apparatus
  • B65C9/0015—Preparing the labels or articles, e.g. smoothing, removing air bubbles
  • B65C2009/0018—Preparing the labels
• • C—CHEMISTRY; METALLURGY
  • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
  • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
  • C09J2203/00—Applications of adhesives in processes or use of adhesives in the form of films or foils
  • C09J2203/334—Applications of adhesives in processes or use of adhesives in the form of films or foils as a label
• • C—CHEMISTRY; METALLURGY
  • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
  • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
  • C09J2401/00—Presence of cellulose
  • C09J2401/006—Presence of cellulose in the substrate
• • C—CHEMISTRY; METALLURGY
  • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
  • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
  • C09J2423/00—Presence of polyolefin
  • C09J2423/006—Presence of polyolefin in the substrate
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T428/00—Stock material or miscellaneous articles
  • Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
  • Y10T428/131—Glass, ceramic, or sintered, fused, fired, or calcined metal oxide or metal carbide containing [e.g., porcelain, brick, cement, etc.]
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T428/00—Stock material or miscellaneous articles
  • Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
  • Y10T428/1352—Polymer or resin containing [i.e., natural or synthetic]
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T428/00—Stock material or miscellaneous articles
  • Y10T428/14—Layer or component removable to expose adhesive

Definitions

• the present invention relates to the field of coloured labels such as (but not limited to) those labels fixed to an article with an aqueous adhesive applied thereto (so-called wet glue labels).
• the invention relates to those labels which achieve a no-label look on the article.
• Any suitable labels may be used in the invention such as labels comprising coloured transparent and/or translucent bio-polymeric films, for example films made from cellulose and/or polylactic acid.
• Labels made from thermoplastic films have been conventionally fixed onto an article with pressure sensitive adhesives (herein denoted as PSA) pre-coated onto the label facestock.
• PSA pressure sensitive adhesives
• Such label films include polyolefins, e.g. biaxially oriented polypropylene - BOPP).
• a PSA label facestock is dispensed from a release liner onto the article to be labeled.
• An alternative labeling method often used with a paper labels is to use a separate adhesive dispersed in an aqueous medium. The adhesive is applied as the label is fixed to the article. These are often referred to as wet glue labels but can also be called cold glue labels or just glue labels.
• alcoholic beverages such as beer, wine or spirits
• Packaging is a major part of the promotional mix especially at point of sale in supermarkets and the drive for differentiation amongst the manufacturers is furious.
• no-label' appearance has become fashionable for PSA labels as retailers have found many advantages from this new form of shelf appeal.
• the appearance of no-label is achieved by applying a transparent and/or translucent label to the article. If the label is transparent, printing on its reverse side (i.e. the "interior" side to be adhered to the article) appears to be directly applied to the article hence the term "no-label look".
• Such interior coats are better protected from wear and tear (rubbing, attack by solvents etc) as they are not on the exterior of the article.
• thermoplastic films have various disadvantages when used as the facestock for a transparent wet glue label.
• the properties of these thermoplastic films are different from the paper labels used on conventional wet glue machines.
• thermoplastic films have a higher barrier to moisture (they are not semi-permeable to water) and this causes a wet glue to take longer to dry (and hence more time for the label to fix in place) which can be disadvantageous on a high speed labelling line or where precise location of the label on the article is required.
• thermoplastic films are not an ideal replacement for a paper label on a conventional production line set up to apply a wet glue label to an article such as a bottle.
• Aqueous coatings are also not easily compatible with and do not adhere well to such thermoplastic films which are often hydrophobic without surface treatment of the film.
• the substrate conventionally used to prepare wet glue labels is paper which is not transparent.
• Thermoplastic films can be transparent but because of the previous stated disadvantages with thermoplastic films and wet glue coatings, it has been necessary to use pressure sensitive adhesives to provide an article with a no look label having acceptable performance.
• manufactures currently using labelling equipment for paper wet glue labels are faced with a significant capital outlay and disruption to change to equipment compatible with pressure sensitive labels if they wish to move to a no-label look.
• PCT/EP02/02726 describes use of wet glue method to apply a clear biopolymeric label (such as a cellulose film) to a transparent article to achieve a clear -label look without PSA.
• This method can use existing machinery suitable for paper wet glue labels yet allows use of biopolymeric labels which have various advantages over paper.
• the biopolymeric labels can be transparent or translucent to achieve a no-label look.
• a wet glue on a biopolymeric substrate can also dry in a reasonable time without the need to use exotic coatings.
• This method now provides an alternative route to a clear-label look for manufacturers without the disadvantages of changing an existing label line from wet glue to PSA.
• the contents of PCT/EP02/02726 are incorporated herein by reference.
• PSA labels have the pressure sensitive adhesive pre-applied during the production of the label stock.
• wet glue process requires that a wet adhesive is applied in situ to the label.
• the wet glue is applied to a glue roller then transferred to rubber covered palettes which transfer the glue onto the reverse of the label.
• the label is applied to articles such as glass or PET bottles at typical output speeds between 300 and 500 plus articles labelled per minute. At these line speeds and particularly with a range of conditions such as wet and dry and warm and cold bottles the applicant has found that the adhesive transfer characteristics of wet glue have been difficult to optimise to achieve a satisfactory no-label appearance of a wet glue label on a bottle comparable to the no-label appearance of a conventional PSA label.
• a label of a clear cellulose film can be applied to a clear flint glass bottle using a wet glue to achieve an acceptable appearance, unexpectedly this is not the case when coloured bottles are used.
• wet glue labelling coloured green, amber, brown or black glass bottles with clear cellulose labels or labels of thermoplastic polymer does not achieve a satisfactory no-label appearance.
• wet glue labels made from biopolymers (especially cellulose and/or polylactic acid) it will be appreciated that if a satisfactory means can be found to apply wet glue to other transparent or translucent facestock (e.g. thermoplastic film such as polyolefins for example BOPP) then the present invention applies equally to these substrates as the problem identified and solved herein arises mainly due to the nature of the wet glue label process compared to that used for PSA labels.
• biopolymers especially cellulose and/or polylactic acid
• EP 0664534 A discloses a heat shrinkable label (optionally made from a film of ethylene-vinyl acetate copolymer with an amount of vinyl acetate in the range of 1 to 6% by weight) where the refractive index of the label is in the range of 1.512 to 1.516 in the circumferential direction when fitted to the container, and is in the range of 1.513 to 1.520 in the vertical direction of the container, so that it is even more unlikely that wrinkling, slackening, etc. occur on a surface of the label when heated, as compared with a conventional label made of a polyethylene film. This deals with a completely different problem faced by a separate type of label to that of the present invention.
• EP 1124213 A discloses a clear PSA label where the PSA layer has at least one inorganic particulate material having a particle size not exceeding 50 ⁇ m and having a refractive index of between 1.4 and 1.6. This is stated to improve the transparency of the label of the bottle.
• WO 0130933 A discloses PSA labels where the pressure-sensitive adhesive has a refractive index of at least 1.48.
• the pressure-sensitive adhesives comprise at least one monomer containing a substituted or an unsubstituted aromatic moiety.
• US 6306242 discloses a method of applying a polymer label to an article with a hydrophilic adhesive by curing the label in situ after it has been applied to the article.
• the polymeric substrate for this hydrophilic adhesive is stated to include "clear, opaque or colored polypropylene" . This document does not appreciate the particular problem faced with achieving a no-label look using wet glue with a transparent label as for example no distinction is made between clear and coloured labels.
• L+A denotes a measurement made in a labelled region of an article i.e. in transmitted or reflected light (preferably in reflected light) through the combination of both a translucent or transparent label in situ (including its wet glue) and the translucent or transparent article;
• L denotes a measurement made in transmitted or reflected light (preferably reflected light) through a plain (i.e. unprinted) translucent or transparent label including (unless otherwise specified) through the wet glue applied to the side which will be the label interior side when on the bottle;
• A denotes a measurement made in transmitted or reflected light(preferably in reflected light) through translucent or transparent article (or translucent or transparent sub region thereof) unlabelled and without any wet glue applied.
• colour space measurements were taken from the front side of the sample as seen when the sample is located on the labelled article and the measurements were performed in reflected light .
• Equations 1 to 4 are defined in Equations 1 to 4 as follows (and where L, a and b are measured directly from the relevant sample):
• bottles of the invention exhibit the following values.
• the modulus of ⁇ C is less than about 5, more preferably less than about 4, most preferably less than about 3.5, for example about zero.
• the modulus of ⁇ L is less than about 7, more preferably less than about 4, most preferably less than about 3, for example about zero.
• the modulus of ⁇ E is less than about 8, more preferably less than about 6, most preferably less than about 4, for example about zero.
• the modulus of ⁇ H is less than about 7, more preferably less than about 5.5, most preferably less than about 2.5, for example about zero.
• Conveniently labelled bottles of the invention comprises those where the modulus of both ⁇ L and ⁇ E is less than about 4, more conveniently both less than about 3.
• Values of ⁇ C, ⁇ E and ⁇ H have been selected by experiment to define the region of CIE colour space for a label with respect to a given article which leads to an acceptable no-label look when that label is applied by a wet glue to the article. Without wishing to be bound by any theory the applicant believes that this is where the visual contrast between the label / adhesive / bottle assembly and the bottle is sufficiently low to achieve a no-label look.
• ⁇ L matched luminescence
• an otherwise matched coloured label can produce a satisfactory no-label look.
• appropriately selecting luminescence in addition to the other CIE parameters also helps to disguise visual blemishes caused by defects in the wet glue layer.
• An upper limit on the value of ⁇ L also ensures that a dark (e.g. black) label is not selected for use on a light (e.g. clear) bottle which would self evidently not result in a no-label look.
• CIE L, C, H colour space differences (cylindrical co-ordinates corresponding to the CIE Cartesian colour space L, a, b) are measured conventionally herein as the difference between the labelled article and the unlabelled article measured in reflected light through a transparent sample.
• CIE Commission Internationale d'Eclairage
• E L + E A [(a +A ) 2 + (b L+A ) 2 + (L +A ) 2 )] 1/2 , which describes the colour for the transparent / translucent region of the article with label attached thereto, as the sample;
• EL [(aj 2 + (b L ) 2 + (L L ) 2 )] 1/2 , which describes the colour for the label, as the sample;
• E A [(a A ) 2 + (b A ) 2 + (L A ) 2 )] 2 , which describes the colour for the transparent / translucent unlabelled article (such as a transparent bottle), as the sample.
• the modulus of transmitted colour ratio R tran s is greater than 0.9 preferably is substantially about 1.0.
• the transmitted colour ratio R trans which uses a composite measurement for the label plus article together can be distinguished from results obtained from more conventional colour matching which is based on reflected light.
• Two transparent coloured objects side by side may look the same, but when stacked on top of each other the colour can change and as such the methods described herein are superior in identifying and selecting that colour of wet glue label which is required to achieve an acceptable no-label appearance on a translucent article of given colour.
• Values for R trans and the equations herein can be used to determine optimal colour values for a label E to achieve a satisfactory no-label look for a given article of specified colour values E A and given the other values specified herein as optimal for example for parameters such as ⁇ C, ⁇ H and ⁇ L.
• the present invention relates to the surprisingly discovered need to minimise the visual sensation of contrast between the label and the bottle and its contents.
• Contrast can arise from differences in luminance.
• the applicant has surprisingly discovered that the acceptability of a no-label appearance depends on the intensity of scattered/reflected light from reflected and transmitted light through the sample. Contrast can also be at constant luminance due to differences in colour. Contrast can thus be defined in terms of standard (CIE Lab) measurements of colour and luminance (i.e. L a and b values). The optimum values are where the CIE differences between bottle and contents and film are as small as possible i.e. approach zero.
• a coloured, transparent / translucent polymeric label which is capable of being fixed to a pre-selected coloured transparent / translucent region of an article by a wet glue process to achieve a non-label look on the article, characterised in that: the colour parameters measured in CIE colour space of each of the label, labelled article and un-labelled article together satisfy conditions (a) and/or (b)
• the modulus of ⁇ C is less than about 10, preferably less than about 5, more preferably less than about 4, most preferably about 3.5, for example about zero, (such as ⁇ 0.5), where:
• the modulus of ⁇ L is less than about 7, preferably less than about 4, most preferably about 3, for example about zero, (such as ⁇ 0.5), where:
• the modulus of ⁇ E is less than about 10, more preferably less than about 6, most preferably about 4, for example about zero, (such as ⁇ 0.5), where:
• the modulus of transmitted colour ratio R tra n s is greater than 0.9 preferably is substantially about 1.0
• translucent means 'to show through' whereas the term “translucent” means 'to transmit and diffuse light so that objects beyond cannot be seen clearly'.
• translucent and transparent have been used herein interchangeably and the one term may be replaced by and/or has be used to imply the other throughout the specification and claims herein.
• any suitable transparent and/or translucent wet glue label facestock in combination with any suitable wet glue may be coloured as described herein to achieve a no-label appearance.
• Preferred wet glue labels that can be coloured as described herein are those preferred, embodied and exemplified in PCT/EP02/02726 but optionally any transparent and/or translucent labels also described in US 6306242 may also be coloured as described herein.
• More preferred facestock is cellulose, BOPP and/or polylactic acid film, most preferred is cellulose film or polylactic acid film, for example cellulose film.
• wet glue used to obtain the colour space values herein is the conventional wet glue described in the examples herein.
• the method of colour matching as described herein can be achieved by any suitable known method to colour a label for example one or more of the following and/or combinations thereof: a) colouring the label film directly by incorporating dyes and/or pigments therein; b) applying coloured lacquers to either or both surfaces by any suitable application method; c) colouring the surface of the substrates with coloured inks by any suitable print process; d) colouring a conventional clear wet glue in order to produce coloured translucent adhesive used in conjunction with a clear film; and/or e) colouring both the label film and the wet glue applied thereto
• the total desired colour of the label plus wet glue may be achieved by a partial combination from any of the above (or other) methods and/or by selection of a specific available colour of any suitable commercially available coloured film from a product range, should the known the film be measured to have the desired colour space values as calculated herein.
• Colouring can be achieved by use of pigments; dyes, such as powder dyes, liquid dyes, reactive dyes; and/or encapsulants of dyes and/or pigments.
• the specific colorants and the absolute and respective concentrations used will vary in each case as they depend on the colour space values which are required for the film and/or adhesive to achieve an improved no-label look on the selected article to be labelled. These values can be calculated for a given article as described herein.
• the colorant can be added into the liquid comprising dispersed cellulose (such as viscose) from which the cellulose film is regenerated.
• the process for colouring film can be achieved by a single calculation to achieve a suitable colour according to the method of the invention described herein.
• colouring can occur in real time as the label is applied to each article, for example by colouring the wet glue just before it is applied to the label.
• the colour of each article to be labelled can be sensed by suitable means (e.g. a camera or other sensor) and this information can be used to adjust (e.g. by a feeder of other means) the concentration and/or respective mix of the colorant(s) added to the adhesive applied to the next article to be labelled.
• suitable means e.g. a camera or other sensor
• This method provides a means to adjust for variations in the colour of individual bottles or batches of bottles (e.g. from different suppliers) so that the no-label look appearance of the labelled bottle remains optimal.
• Such a method of colouring the adhesive can also be used in combination with a coloured film.
• a film colour can be selected as described herein to provide an optimal no-label look for the average colour of the articles to be labelled.
• the wet glue can then be coloured in real time on the labelling line to adjust for smaller colour variations for each article and fine tune the no-label look appearance of each article.
• the label can be precisely matched to an article of any colour so a no-label appearance can be achieved for a much wider range of articles.
• one aspect of the present invention provides a method of reliably and reproducibly predicting in advance the colour and/or luminosity required of a label film to achieve a no label appearance when said label is applied by a wet glue method to a translucent article of given colour and luminosity (defined by its position in CIE colour space).
• the present invention is illustrated by the figures herein which are photographs of five bottles to which respectively as a comparison a clear, transparent cellulose label (Figure 1) and coloured (different browns) transparent cellulose labels of the invention ( Figures 2 & 3) had been applied by a wet glue process.
• Cellulose label film was produced as follows for both comparative labels and labels of and used in the method of the present invention as follows.
• a production machine was set up in a conventional manner to produce regenerated cellulose film from the well known viscose method.
• the viscose used had a cellulose content of 9.3% and the resultant film had a substance of 62 grams per square metre uncoated and 64.5 grams per square metre coated. Where a colorant was omitted the resultant film was a conventional clear and transparent cellulose film such as that available commercially from UCB under the trade mark Cellophane® 645 E711.
• cellulose films with a substances of 75 grams per square metre uncoated and 77.5 grams per square metre coated were also prepared and gave satisfactory results in the method of the present invention when tested analogously to the exemplified films herein.
• a suitable (e.g. brown) dye or pigment can be added to the viscose stream to be absorbed into the regenerated film.
• the colorant type and concentration
• the colorant may be selected such that the colour of the resultant film web satisfied the equations herein with respect to previously measured colour space values for the coloured (e.g. brown) glass bottles to be labelled. This produces a resultant film which is transparent and of the required colour to achieve a no-label appearance on a given coloured glass bottle (e.g. dark brown bottle filled with a very dark beer).
• One side of the optionally coloured cellulose film prepared as described above was coated with a conventional coating of vinyl chloride / vinyl acetate copolymer at a coat weight of 2.5 g per m 2 .
• a standard wet glue synthetic adhesive (50% water) was then applied to the same side as the copolymer during labelling by a conventional wet glue labelling apparatus. The applicant has found that this adhesive may be applied at coat weights from 2.5 to 3.5 g per m 2 and will still give satisfactory performance in the method of the present invention.
• the label films were applied to the bottles in a conventional way using unmodified (or only trivially modified) conventional labeling equipment set up for wet glue paper labels, to achieve a transparent label thereon.
• the colour space co-ordinates (CIE) for the various bottle / label combinations were measured conventionally in reflected light.
• the CIE data (Modulus values) obtained were given in the Tables below to 2 decimal places (dimensionless, no units). For each example there is a pair of data sets where #(i) refers to the bottle (whether empty or full as indicated) before labelling and #(ii) is data obtained after the relevant label had been applied.
• NA denotes "not applicable” (e.g. No-look label, ⁇ L, ⁇ H, ⁇ C, and ⁇ E were not determined for unlabelled bottles).
• Comp I was a label prepared from clear uncoloured transparent cellulose available commercially from UCB under the trade mark Cellophane® 645 E711.
• Comp II was a label where the colorant added to the cellulose was a blue colour unmatched (i.e. not satisfying the Equations 1 to 4 herein) to the colour of the brown bottle which was labelled.
• Comp III to VI are various comparative labelled bottle made using clear cellulose label applied (as described above) to a bottle of clear glass optionally filed with various brown dyes B to E. Tabl. e 1
• Bottles were labelled according to the invention as follows with reference to Tables 2 to 3 and Figures 2 to 3 herein.
• brown labels B1 and B2 in Examples 1 to 10 herein were coloured as described herein (by addition to a standard viscose bath with the film web speed the same in each case) using the following colorant mixture added at respective weight ratios (B1 and B2) of 20 and 9. (Each dye was available commercially from Colorantes Industriales) Colorant Weight ratio

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• Chemical & Material Sciences (AREA)
• Organic Chemistry (AREA)
• Details Of Rigid Or Semi-Rigid Containers (AREA)
• Labeling Devices (AREA)

Applications Claiming Priority (5)

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• 2003
  • 2003-07-17 EP EP03765021A patent/EP1563028A2/de not_active Withdrawn
  • 2003-07-17 US US10/519,993 patent/US20060008602A1/en not_active Abandoned
  • 2003-07-17 WO PCT/EP2003/007775 patent/WO2004009721A2/en not_active Ceased
  • 2003-07-17 AU AU2003254368A patent/AU2003254368A1/en not_active Abandoned
  • 2003-07-17 JP JP2004522485A patent/JP2006512594A/ja not_active Abandoned
  • 2003-07-17 CA CA002492590A patent/CA2492590A1/en not_active Abandoned
  • 2003-07-17 KR KR1020057001011A patent/KR20050026497A/ko not_active Abandoned

Non-Patent Citations (1)

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