EP2356187A1 - Étiquette à base d'une feuille de polyoléfine - Google Patents

Étiquette à base d'une feuille de polyoléfine

Info

Publication number
EP2356187A1
EP2356187A1 EP09768337A EP09768337A EP2356187A1 EP 2356187 A1 EP2356187 A1 EP 2356187A1 EP 09768337 A EP09768337 A EP 09768337A EP 09768337 A EP09768337 A EP 09768337A EP 2356187 A1 EP2356187 A1 EP 2356187A1
Authority
EP
European Patent Office
Prior art keywords
adhesive
label according
layer
label
base layer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP09768337A
Other languages
German (de)
English (en)
Inventor
Nasreddine Hamou
Wolfgang Schaps
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AMC Precision Inc
Original Assignee
AMC Precision Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by AMC Precision Inc filed Critical AMC Precision Inc
Priority to EP09768337A priority Critical patent/EP2356187A1/fr
Publication of EP2356187A1 publication Critical patent/EP2356187A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F3/00—Labels, tag tickets, or similar identification or indication means; Seals; Postage or like stamps
    • G09F3/08—Fastening or securing by means not forming part of the material of the label itself
    • G09F3/10—Fastening or securing by means not forming part of the material of the label itself by an adhesive layer
    • 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
    • C09J133/00—Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Adhesives based on derivatives of such polymers
    • C09J133/04—Homopolymers or copolymers of esters
    • C09J133/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical
    • C09J133/08—Homopolymers or copolymers of acrylic acid esters
    • 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
    • C09J7/24—Plastics; Metallised plastics based on macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
    • C09J7/241—Polyolefin, e.g.rubber
    • C09J7/243—Ethylene or propylene polymers
    • 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
    • C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
    • C09J7/38—Pressure-sensitive adhesives [PSA]
    • C09J7/381—Pressure-sensitive adhesives [PSA] based on macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
    • C09J7/385—Acrylic polymers
    • 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
    • C09J2423/00—Presence of polyolefin
    • C09J2423/006—Presence of polyolefin 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
    • C09J2433/00—Presence of (meth)acrylic polymer

Definitions

  • the present invention relates to a label for adhering to an article, in particular a reusable container. Furthermore, the invention relates to the use of the label as well as articles provided with such a label.
  • containers are often reused. This requires a washing of the containers, which usually takes place with an alkaline washing solution (washing liquor) and in several stages (washing baths).
  • the labels are at least partially detached from the reusable container.
  • reusable containers are standardized for many product groups, such as beer bottles. This allows different beverage companies, such as breweries, to access the same type of reusable container and reduces the logistical burden of the reusable system. For reusable containers, it is therefore common practice to completely replace the labels used during washing.
  • paper-based labels can not be manufactured transparently, which limits the ability to make containers appealing. Eventually, paper-based labels partially dissolve in the wash solution and contaminate it these. Therefore, the use of polymer films as the basis of labels has been proposed.
  • GB 2 411 878 A1 discloses such self-adhesive labels for returnable bottles based on polymer films.
  • the polymer film is provided with a pressure-sensitive adhesive.
  • polymer films are usually water-impermeable, which makes their removal from the reusable container difficult.
  • Various solutions have already been proposed for this problem.
  • EP 0 510 403 A1 describes a label whose underside is to be adhesively bonded to an article by means of an adhesive that is substantially completely soluble in a washing liquid.
  • an adhesive that is substantially completely soluble in a washing liquid.
  • the use of polyacrylic acid ester is recommended, wherein the adhesion of the adhesive is preferably improved by a bonding agent.
  • the pressure-sensitive adhesive layer preferably covers the underside of the label, leaving underspray zones free. However, such zones result in the label having a certain structure in the view. The desired with transparent labels no-label look can not be achieved.
  • EP 0 377 289 A2 discloses adhesive labels made of a foamed polypropylene film. Such labels can be punched well. However, EP 0 377 289 A2 is concerned only with films and their stampability, and the rewettability of the label is not described.
  • EP 0 951 004 A1 describes a label which has a carrier material layer with at least one in at least one Direction stretched plastic film layer and an adhesive layer comprises.
  • the stretched plastic film layer is formed so that it shrinks back on the heat exposure of the hot washing liquid used in the replacement of the label, overcoming the holding force of the glued onto the article adhesive layer.
  • the adhesive layer further contains a dispersible adhesive that is substantially insoluble in the wash liquid, at least until the label is removed from service, so that the wash liquid is not enriched with adhesive.
  • the shrinkage force of the film layer and the adhesive effect of the adhesive are coordinated so that the label can be completely detached from the container at the temperature of the washing liquid.
  • the carrier material layer has two partial layers with different coefficients of thermal expansion, which is why the carrier material layer rolls up when exposed to heat.
  • EP 1 564 706 A2 discloses a label which can be adhesively bonded to a reusable container by means of wet glue and has a stretched plastic film which shrinks back to remove the article from the article under the effect of heat.
  • the label is structured on the glue side to increase the area.
  • lye does not simply drain from the shrunken (and possibly rolled) labels.
  • rolled-up labels tend to trap significant quantities of wash liquor and carry it off to subsequent baths. This leads to undesirably short cleaning intervals in the baths.
  • a label should be provided for a reusable container, which does not rely on the release of underflushable zones (as in EP 0 510 403), not on the use of a shrink film (EP 0 951 004), not on an areal enlarging structuring and not on the use of a moisture-absorbing layer arrives.
  • a base layer comprising a cast polyolefin film
  • Exemplary polyolefins for layer (1) are disclosed in GB 2 411 878 A1.
  • the polyolefin is a polyethylene or polypropylene, in particular polyethylene.
  • the base layer it is possible for the base layer to comprise, in addition to the compulsory at least one polyolefin film, one or more further films, which in turn may itself be a polyolefin film.
  • the base layer consists of a single polyolefin film. In a further preferred embodiment, the base layer is composed of two or, which is particularly preferred, three polyolefin films.
  • the cast polyolefin film used in the present invention has better transparency in comparison with stretched or cast films. Also worth mentioning is the more uniform extrusion of cast films compared to blown films.
  • the base layer (1) has a thickness of 20 to 200 ⁇ m, preferably 40 to 150 ⁇ m, more preferably 50 to 110 ⁇ m, especially 70 to 100 ⁇ m, such as 80 to 90 ⁇ m.
  • the base layer preferably does not comprise a polyolefin blown film.
  • Preferred properties of the base layer are: a) a thickness [ ⁇ m] of 20 to 200, preferably 40 to 150, more preferably 50 to 110, in particular 70 to 100, such as 80 to 90, measured according to DIN 53 353;
  • the shrinkage is [%] of the base layer according to the invention (which preferably consists of a single polyolefin film) in the transverse and machine direction is preferably 0 (zero), measured according to DIN 53 377 (10 minutes at 7O 0 C). That is, in a particularly preferred embodiment, the polyolefin film is not stretched.
  • Transparent base layers are particularly preferred.
  • the haze of such a base layer (which preferably consists of a single cast polyolefin film), measured according to ASTM 1003 [%], is 2 to 20, preferably 3 to 17, more preferably 5 to 15, such as 8 to 12.
  • Particularly preferred according to the invention is the use of a transparent polyethylene film as a base layer which
  • Such a polyethylene film is sold by Renolit AG under the number 20.30.10.0022.xxx.
  • a preferred opaque base layer (which preferably consists of a single cast polyolefin film) has an opacity [%], measured according to DIN 53 146, of 50 to 95, preferably 70 to 90, more preferably 80 to 88, such as 82 to 86.
  • Preferred properties of the opaque base layer are:
  • Such polyethylene films are sold by Renolit AG under number 20.30.10.0021. distributed xxx.
  • the (transparent or opaque) base layer used according to the invention which is preferably a single polyolefin film, is pretreated in a preferred embodiment at least (and preferably only) on the side on which the adhesive layer (2) is applied.
  • Pretreatment processes are known and disclosed, for example, in the prior art cited above.
  • the base layer according to the invention is pretreated with a corona discharge, a flame treatment or an adhesion promoter. The pre-treatment ensures the good adhesion of the adhesive (2), which is why the adhesive remains on the base layer during washing.
  • Particularly preferred is a pretreatment by corona discharge.
  • the film may be finished with an acrylate top coat or pretreated only by corona and / or flame treatment, and may be printed over the entire surface or only partially.
  • Acrylate adhesives used according to the invention can be (i) solvent-free or (ii) water-based or (iii) formulated with the aid of an organic solvent.
  • the acrylate adhesive is water-based and largely free of volatile organic solvent.
  • Preferred adhesives have a Brookfield viscosity (determined with spindle No. 2 at 50 s -1 ) of 10 to 200 mPa * s, preferably 15 to 170 mPa * s, in particular 20 to 150 mPa * s.
  • adhesive (2) has an adhesive power (FINAT Test No. 1, Federation International of Fabricants et Transformers d'Adhesifs et Thermocollants sur Wunschs et Autres Supports, The Hague, The Netherlands, 24 hours on glass) from 3 to 20 N. / 25 mm, preferably 3.5 to 12 N / 25 mm, more preferably 4 to 10 N / 25 mm, especially 4.5 to 9 N / 25 mm, such as 6 to 8 N / 25 mm.
  • adhesive power FINAT Test No. 1, Federation International of Fabricants et Transformers d'Adhesifs et Thermocollants sur Textils et Autres Supports, The Hague, The Netherlands, 24 hours on glass
  • the adhesive (2) has a solids content of 20 to 65%, preferably 40 to 60%, in particular 45 to 55%, such as 47 to 52%.
  • the adhesive (2) is present in an amount of 8 to 30 g / m 2 , preferably 10 to 20 g / m 2 , in particular 13 to 18 g / m 2 .
  • Preferred acrylate adhesives are water-based acrylate dispersion adhesives which lose 80% or more of their adhesive power upon contact of the label with 2% sodium hydroxide solution (30 seconds in a 2% sodium hydroxide solution tempered at 80 ° C., then dried at 70 ° C. for 5 minutes) , The procedure is that the base layer of a label glued to glass, washed and is dried and then as described above with the Finat test no. 1, the (remaining) adhesive force is measured.
  • Adhesives used according to the invention are preferably substantially insoluble at 80 ° C. in 2% strength aqueous NaOH solution.
  • Such acrylate adhesives are known. Particularly preferred displaced water-based Acrylatdispersionskle- a under the name Acronal ® A245 (BASF SE registered trademark) calc.
  • Acronal ® A245 BASF SE registered trademark
  • the functional tackifying carboxyl groups are neutralized by the sodium hydroxide solution on contact with the alkaline wash solution and thereby lose their adhesion to the substrate, which leads to the detachment of the labels.
  • the adhesion to the substrate drops so much by immersion in the washing solution that the base layer no longer adheres to the bottle, with the adhesive coating (2) adhering to the label. It forms a film of sodium hydroxide solution between the base layer and the substrate.
  • the base layer shows no shrinkage or elongation.
  • the mechanical properties of the base layer before immersion remain unchanged after immersion in the hot washing liquid.
  • the hot washing liquid laterally infiltrates the adhesive without diffusing through the plastic film.
  • a silicone layer (which may be solvent-containing, solvent-free or an aqueous system) is used as an antiblocking agent.
  • the layer (3) is present in an amount of 0.1 to 10 g / m 2 , preferably 0.2 to 5 g / m 2 , in particular 0.2 to 0.5 g / m 2 .
  • Suitable backing layers of the label of the present invention which are removed prior to dispensing the label are selected from plastic (such as polypropylene, PVC or PET), high density paper (such as glassine paper, clay-coated kraft and polyethylene-coated kraft paper) and combinations thereof.
  • plastic such as polypropylene, PVC or PET
  • high density paper such as glassine paper, clay-coated kraft and polyethylene-coated kraft paper
  • Preferred basis weights of the carrier layer (4) are 20 to 200 g / m 2 , preferably 30 to 100 g / m 2 , in particular 40 to 90 g / m 2 , such as 50 to 70 g / m 2 or 25 to 50 g / m 2 ,
  • the invention relates to the use of the base layer (1) and the adhesive layer (2) of the labels according to the invention on any containers, preferably reusable containers such as returnable bottles.
  • Suitable materials for the container are selected from glass, plastic and metal. Preferred materials are glass and polyethylene terephthalate (PET).
  • the invention relates to containers provided with the base layer (1) and the adhesive layer (2) of the labels according to the invention.
  • the advantages of the invention will become apparent in particular from the following examples.
  • Layer (1) cast, transparent PE foil, thickness 85 ⁇ m,
  • Layer (2) 20 to 23 g / m 2 (about 20 ⁇ m) of an aqueous acrylate adhesive (CR085 or CR 87 from BASF SE or P58913 from Rohm and Haas Company),
  • glassine paper (4) was coated with silicone layer (3) and layer (3) was dried. Then it was coated with the aqueous acrylate adhesive (2) and this was cured. Finally, layer (1), which may have previously been pretreated by a corona treatment or coated with topcoat, was laminated to form a composite. The layers (3) and (2) were thermally cured.
  • Example 2 The procedure was as in Example 1 except that instead of the described therein, the adhesive layer (2) of the adhesive Acronal ® A245 (registered trademark of BASF SE, Ludwigshafen, Germany, formerly Acronal ® DS3578) was used. Under the conditions mentioned above, the label dissolved in less than 30 seconds.
  • the adhesive layer (2) of the adhesive Acronal ® A245 registered trademark of BASF SE, Ludwigshafen, Germany, formerly Acronal ® DS3578

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Laminated Bodies (AREA)

Abstract

L'invention porte sur une étiquette destinée à un objet. L'étiquette comprend (1) une couche de base, qui comprend une feuille de polyoléfine coulée (2), un adhésif de type acrylate sur la couche de base (3), une couche anti-adhésive vis-à-vis de l'adhésif (2), et (4) une couche support. Les étiquettes selon l'invention conviennent en particulier à des récipients réutilisables.
EP09768337A 2008-12-09 2009-12-09 Étiquette à base d'une feuille de polyoléfine Withdrawn EP2356187A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP09768337A EP2356187A1 (fr) 2008-12-09 2009-12-09 Étiquette à base d'une feuille de polyoléfine

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
EP08171128A EP2196510A1 (fr) 2008-12-09 2008-12-09 Etiquette à base d'une feuille de polyoléfine
US13845208P 2008-12-17 2008-12-17
PCT/EP2009/008810 WO2010066417A1 (fr) 2008-12-09 2009-12-09 Étiquette à base d'une feuille de polyoléfine
EP09768337A EP2356187A1 (fr) 2008-12-09 2009-12-09 Étiquette à base d'une feuille de polyoléfine

Publications (1)

Publication Number Publication Date
EP2356187A1 true EP2356187A1 (fr) 2011-08-17

Family

ID=40566102

Family Applications (2)

Application Number Title Priority Date Filing Date
EP08171128A Withdrawn EP2196510A1 (fr) 2008-12-09 2008-12-09 Etiquette à base d'une feuille de polyoléfine
EP09768337A Withdrawn EP2356187A1 (fr) 2008-12-09 2009-12-09 Étiquette à base d'une feuille de polyoléfine

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP08171128A Withdrawn EP2196510A1 (fr) 2008-12-09 2008-12-09 Etiquette à base d'une feuille de polyoléfine

Country Status (2)

Country Link
EP (2) EP2196510A1 (fr)
WO (1) WO2010066417A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102314813A (zh) * 2011-09-20 2012-01-11 宁波博能印刷电子科技有限公司 防伪标签

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU617022B2 (en) * 1989-01-05 1991-11-14 Minnesota Mining And Manufacturing Company Control-depth die-cuttable pressure-sensitive labels
DE4113751A1 (de) 1991-04-26 1992-10-29 Zweckform Etikettiertechnik Etikett
US5514122A (en) * 1994-05-16 1996-05-07 Minnesota Mining And Manufacturing Company Feminine hygiene pad
DE29806781U1 (de) 1998-04-15 1999-09-02 Zweckform Etikettiertechnik Leicht entfernbares Etikett für Mehrwegbehälter
DE202004002207U1 (de) 2004-02-12 2005-06-16 Steinbeis Ppl Gmbh Folienetikett für Mehrwegbehälter
GB2411877A (en) 2004-03-09 2005-09-14 Spear Europ Ltd Removable label with channels in surface of adhesive
DE102008014390A1 (de) * 2008-03-17 2009-09-24 Tesa Se Klebeband zum Verschließen von Verpackungen mit gleithemmender Oberfläche und Verwendung desselben

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2010066417A1 *

Also Published As

Publication number Publication date
WO2010066417A1 (fr) 2010-06-17
EP2196510A1 (fr) 2010-06-16

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