EP1262937A1 - Trennschicht, Datenträger sowie zugehöriges Herstellungsverfahren - Google Patents

Trennschicht, Datenträger sowie zugehöriges Herstellungsverfahren Download PDF

Info

Publication number
EP1262937A1
EP1262937A1 EP01113120A EP01113120A EP1262937A1 EP 1262937 A1 EP1262937 A1 EP 1262937A1 EP 01113120 A EP01113120 A EP 01113120A EP 01113120 A EP01113120 A EP 01113120A EP 1262937 A1 EP1262937 A1 EP 1262937A1
Authority
EP
European Patent Office
Prior art keywords
release liner
substrate
laser
information carrier
laser markable
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Withdrawn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
EP01113120A
Other languages
English (en)
French (fr)
Inventor
Giuseppe Dr. Ferraris
Peter Ludwig
Wilhelm Dr. Munniger
Tomas Frederico Rink
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.)
Mondi Inncoat GmbH
RITRAMA SpA
Original Assignee
RITRAMA SpA
Frantschach Inncoat GmbH
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 RITRAMA SpA, Frantschach Inncoat GmbH filed Critical RITRAMA SpA
Priority to EP01113120A priority Critical patent/EP1262937A1/de
Publication of EP1262937A1 publication Critical patent/EP1262937A1/de
Withdrawn legal-status Critical Current

Links

Images

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
    • G09F3/02—Forms or constructions
    • G09F3/0291—Labels or tickets undergoing a change under particular conditions, e.g. heat, radiation, passage of time
    • G09F3/0292—Labels or tickets undergoing a change under particular conditions, e.g. heat, radiation, passage of time tamper indicating labels

Definitions

  • the invention relates to a release liner comprising a substrate and a coating on the substrate that provides release properties against a pressure sensitive adhesive.
  • Self-adhesive constructions for labels are well-known in the art. They have at least three distinguishable layers, from top to bottom: a face material, a pressure sensitive adhesive and a carrier material here called release liner.
  • the face material with the adhesive is called label.
  • the label can be taken off the release liner and be applied onto another surface.
  • Such constructions are well known and often called Duplex (see Fig. 4).
  • Triplex or Piggy-back a Duplex construction with a second adhesive layer under the release liner - now intermediate release liner - sits on a second, lower release liner (see Fig. 5).
  • the utilisation is a two step process, corresponding to the two adhesive layers: first the lower release liner is removed and the stack of the top layers all together are applied onto another surface; second from this stack the adhesive covered face material can be taken off and brought to another place, leaving the intermediate release liner at the first surface.
  • the face material of standard label constructions carries information.
  • the information is printed onto the face by means of any printing method.
  • the release liner consists of a substrate like paper, coated paper or film, with a coating on the substrate that provides release properties against pressure sensitive adhesives.
  • the coating often comprises silicone, i. e. dimethylsiloxane, and blends thereof. It is therefore hereinafter called " silicone coating".
  • release liner(s) It is often necessary that information present on the face material has to be repeated on the release liner(s). Sometimes it is wanted that one or both of the included release liners carries information different from the face material.
  • release liner One of the inherent properties of a release liner is that it easily releases adhesives or anything else that might stick on it, in particular due to the silicone. It is therefore very difficult to fix information on it. Printing on siliconized surfaces can be wiped away or can smear.
  • a release liner having a substrate which is sensitive to irradiation, under which it can change its local optical properties, thus being provided with a visible information which cannot be erased or altered without destroying the substrate.
  • the substrate is sensitive to optical, ultraviolet or infrared radiation, in particular laser radiation.
  • the present concept is based on the fact that metallic, ceramic and also some plastic manufactured articles are, due to their chemical composition, sensitive to laser rays, thus making it possible to " etch" it and /or to produce a colour variation.
  • Other totally insensitive plastics need a modification in their formulation by introducing specific additives, as for example described in the DE 196 29 675 A1, or DE 197 26 136 A1.
  • the laser systems used for the marking technology are:
  • the radiation-sensitive substrate of the release liner according to the invention may be a one-layer structure.
  • the substrate is a two or more layer structure, at least one of the layers - hereinafter called “laser markable polymer layer” - being sensitive to the radiation.
  • the substrate comprises a core layer which is coated on one side with the laser markable polymer layer carrying the silicone coating and which may optionally be coated on the other side with another polymer layer.
  • the laser markable polymer layer is a film laminated to the core layer.
  • the laser markable polymer layer is extrusion coated onto the core layer.
  • the laser markable polymer layer is coextrusion coated onto the core layer.
  • Another subject of the invention is an information carrier with a face material being affixed by pressure sensitive adhesive to a release liner of the above-mentioned kind, hereinafter called "laser markable release liner".
  • the information carrier may be of the above-mentioned Duplex type.
  • the information carrier may also be of the above-mentioned Triplex type.
  • the face material is affixed by pressure sensitive adhesive to an intermediate relase liner.
  • the intermediate relase liner is affixed by pressure sensitive adhesive to a lower release liner.
  • Either the intermediate release liner, or the lower release liner, or both release liners are laser markable release liners of the above-mentioned kind.
  • a process for the manufacture of an information carrier according to the invention includes the step of irradiating the substrate of a laser markable release liner to provide it with visible information.
  • the substrate may be irradiated through one or more transparent or translucent covering layers.
  • the information carrier is die-cut to a part of its depth and weeded at its edge to expose the substrate for irradiation.
  • the laser markable release liner 10 has a single-layer substrate 12 provided with a silicone coating 14.
  • the substrate 12 is laser markable. As indicated by the arrow 16, the substrate 12 may be irradiated by laser radiation through the silicone coating 14, thus changing the optical properties of the substrate 12 to provide it with a visible information which cannot be erased or altered without destroying the substrate 12.
  • the laser markable release liner 20 has a multi-layer substrate comprising a core layer 22 provided with a laser markable polymer layer 24 on its upper surface.
  • the laser markable polymer layer 24 carries the silicone coating 14.
  • the lower surface of the core layer 22 may be provided with another polymer layer 26.
  • the laser markable polymer layer 24 may be manufactured as a film which is laminated to the core layer 22.
  • the core layer 22 is extrusion coated with the laser markable polymer layer 24.
  • the laser markable polymer layer 24 may be irradiated through the silicone coating 14 as above.
  • the laser markable release liner 30 has a multi-layer substrate comprising a core layer 22 which is coextrusion coated with a laser markable polymer layer 32.
  • the upper component 34 of the coextruded material is not laser markable while the lower component 36 is laser markable.
  • the laser markable component 36 may be irradiated through the silicone coating 14 as above, and through the upper component 34 of the coextruded layer.
  • the upper component 34 of the coextruded material is laser markable while the lower component 36 is not laser markable.
  • the laser markable component 34 may be irradiated through the silicone coating 14.
  • the information carrier 40 according to Fig. 4 is of the Duplex type. It comprises a face material 42 with a print 44 on the upper side. The lower side of the face material 42 is provided with a layer of pressure sensitive adhesive 46 covered by a relase liner 48.
  • the release liner 48 is a laser markable release liner of type 10 according to Fig. 1, type 20 according to Fig. 2 or type 30 according to Fig. 3.
  • the information carrier 50 according to Fig. 5 is of the Triplex type.
  • the layer of pressure sensitive adhesive 46 on the face material 42 is covered by an intermediate release liner 52 adhering with a layer of pressure sensitive adhesive 54 on a lower release liner 56.
  • the intermediate release liner 52, or the lower release liner 56, or both release liners 52, 56 is / are (a) laser markable release liner(s) of the type 10 according to Fig. 1, type 20 according to Fig. 2 or type 30 according to Fig. 3.
  • a laser markable intermediate release liner 52 with a normal lower release liner 56, to combine a normal intermediate release liner 52 with a laser markable lower release liner 56 and to combine a laser markable intermediate release liner 52 with a laser markable lower release liner 56, both of the same type 10, 20, 30 or a different type 10, 20, 30.
  • the laser marking of the Triplex construction may be executed on both or only one of two release liners 52, 56.
  • Fig. 6 illustrates the laser irradiation of a Duplex information carrier 40 comprising an opaque release liner 48 covered by an opaque face material 42 so that irradiating through is not possible.
  • the information carrier 40 is delaminated to remove the face material 42 with the pressure sensitive adhesive 46 from the release liner 48 so that the latter becomes exposed for irradiation through the silicone coating 14. After irradiation, the face material 42 and the release liner 48 are recombined.
  • Fig. 7 illustrates the die-cutting, weeding and irradiating of a Duplex type information carrier 40.
  • the information carrier 40 is die cut from above to a part of its depth, namely through the face material 42 and into the pressure sensitive adhesive 46, leaving the release liner 48 uncut. Die-cutting is performed around a central core so that a surrounding border around the core may be removed - i.e. weeded - to expose the border 70 of the release liner 48 for irradiation.
  • Fig. 8 illustrates the die-cutting, weeding and irradiating of a Triplex type information carrier 50 having a lower release liner 56 which is laser markable. The die-cutting is performed above the lower release liner 56.
  • Fig. 9 illustrates the die-cutting, weeding and irradiating of a Triplex type information carrier 50 having an intermediate release liner 52 and a lower release liner 56 which are both laser markable.
  • the die-cutting is performed in a staggered manner. A narrow outer border rim is cut away above the lower release liner 56, and a broad inner border rim is cut away above the intermediate release liner 52.
  • the Triplex type information carrier 50 according to Fig. 8 and Fig. 9 is weeded and irradiated as described above.
  • the present invention provides a multilayer construction which enables one to produce label constructions with a silicone containing release liner surface which can be marked in a fashion that cannot be erased or altered.
  • Such a multilayer construction is markable on the release liner 10, 20, 30 without having the disadvantages of carbonless copy paper. It comprises a release liner 10, 20, 30 that has a silicone containing surface and that has at least one polymeric layer.
  • the polymeric layer may contain one or more specific additives, as mentioned above, making it laser-markable with different intensities.
  • This release liner 10, 20, 30 may be a siliconized polymer film or a multi-layered construction.
  • a multi-layered construction comprises a core layer 22, e. g. of paper or a film or a non-woven, coated on one side with a laser markable polymer coating 24, being siliconized on the same side; it may also have a polymer coating 26 on the backside.
  • the laser-markable polymer layer 24 is now accessible for laser irradiation through the transparency of the adjacent layers, at least from the silicone side. When using a siliconized, transparent polymer film, the laser marking can also be done from the reverse side.
  • the polymer coatings mentioned above may be obtained by extrusion-coating or by lamination of films.
  • the face material 42 thereof comprises
  • the release liner 10, 20, 30 has a coating 14, containing silicone, i. e. dimethylsiloxane and blends thereof.
  • This silicone coating 14 allows the peeling off of an adhesive 46, 54. It can be solvent or solventless silicone, thermally or radiation-cured silicone.
  • Under the silicone is a polymeric layer 24 which may have additives present, making it sensitive to laser radiation.
  • This polymeric layer can be a combination of several extruded or laminated polymeric layers, of which one or several of them carry the laser-sensitive additives.
  • a polyolefin is the preferable choice of polymers; and polyethylene (PE) is the preferred polyolefin.
  • this polymeric layer or combination of layers may be a coating on a substrate 22 or a lamination of the polymeric layer with substrate 22.
  • the substrate 22 can be a Kraft paper from 30 to 200 g/m 2 (preferably between 40 and 120 g/m 2 ), as well as a calendered paper (glassine and / or densified kraft), with a weight between 40 and 120 g/m 2 (preferably between 50 and 80 g/m 2 ) or a transparent or opaque PE, PP or PET film with a thickness between 10 and 150 ⁇ , preferably between 23 and 80 ⁇ .
  • the Triplex form of the invention is a second adhesive layer 54, whose nature is of the same as the first adhesive 46.
  • the second release liner 56 may have the same nature as the first 52 or it may be a standard release liner not being laser markable made of paper or plastic film, well known to persons skilled in this art, and which has a silicone coating 14, which allows the peeling off of an adhesive 54.
  • a self-adhesive laminate can be printed with any technique well-known to people skilled in the art.
  • the laser marking generates information like a logo, bar code, text, progressive numbering, or whatever is requested for personalising each label. It can be done before or after the die-cutting of labels, in-line or off-line of the printing process, in-line or off-line of the die-cutting operation, in-line or off-line of the label's application or dispensing.
  • the laminate may be used with one of the following options:

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Laminated Bodies (AREA)
  • Adhesive Tapes (AREA)
EP01113120A 2001-05-29 2001-05-29 Trennschicht, Datenträger sowie zugehöriges Herstellungsverfahren Withdrawn EP1262937A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP01113120A EP1262937A1 (de) 2001-05-29 2001-05-29 Trennschicht, Datenträger sowie zugehöriges Herstellungsverfahren

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP01113120A EP1262937A1 (de) 2001-05-29 2001-05-29 Trennschicht, Datenträger sowie zugehöriges Herstellungsverfahren

Publications (1)

Publication Number Publication Date
EP1262937A1 true EP1262937A1 (de) 2002-12-04

Family

ID=8177583

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01113120A Withdrawn EP1262937A1 (de) 2001-05-29 2001-05-29 Trennschicht, Datenträger sowie zugehöriges Herstellungsverfahren

Country Status (1)

Country Link
EP (1) EP1262937A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3130474A3 (de) * 2015-08-10 2017-03-08 Nuceria Adesivi s.r.l. Unlöschbares drucken des rückverfolgbarkeitscodes für pharmazeutischen aufkleber

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4253899A (en) * 1979-03-08 1981-03-03 Avery International Corporation Method of making matrix free thin labels
US5626966A (en) * 1994-06-22 1997-05-06 Beiersdorf Aktiengesellschaft Single-layer laser label
US5832827A (en) * 1995-06-07 1998-11-10 Moore Business Forms, Inc. Method for printing upon lenerless thermal transfer labels having a silicone release agent
EP0911787A2 (de) * 1997-10-24 1999-04-28 Beiersdorf Aktiengesellschaft Laseretiketten und ihre Verwendung
US6066437A (en) * 1996-10-11 2000-05-23 Schreiner Etiketten Und Selbstklebetechnik Gmbh & Co. Film which can be lettered using a laser beam

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4253899A (en) * 1979-03-08 1981-03-03 Avery International Corporation Method of making matrix free thin labels
US5626966A (en) * 1994-06-22 1997-05-06 Beiersdorf Aktiengesellschaft Single-layer laser label
US5832827A (en) * 1995-06-07 1998-11-10 Moore Business Forms, Inc. Method for printing upon lenerless thermal transfer labels having a silicone release agent
US6066437A (en) * 1996-10-11 2000-05-23 Schreiner Etiketten Und Selbstklebetechnik Gmbh & Co. Film which can be lettered using a laser beam
EP0911787A2 (de) * 1997-10-24 1999-04-28 Beiersdorf Aktiengesellschaft Laseretiketten und ihre Verwendung

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3130474A3 (de) * 2015-08-10 2017-03-08 Nuceria Adesivi s.r.l. Unlöschbares drucken des rückverfolgbarkeitscodes für pharmazeutischen aufkleber

Similar Documents

Publication Publication Date Title
KR100403212B1 (ko) 다층레이저라벨및사용방법
US5873607A (en) Construction for a laminated window label
EP1547055B1 (de) Farbwechselband, label, karte und spielzwischenvorrichtungen
CA2454909C (en) Method for producing a laser-printable film
US9583026B2 (en) Secure multilayer label and associated manufacturing method
JP2006524364A (ja) タンパー指示装置および情報を保護する方法
CA2185455A1 (en) Security label
US20070275203A1 (en) Separating Layer Carrier
JP2004029726A (ja) 情報隠蔽用ラベル
US7473454B2 (en) Laminate, a self-adhesive label web and a method for manufacturing
US8654405B2 (en) Method for producing a multi-layered film
CA2521969C (en) Security arrangement
EP0342982A2 (de) Bedrucktes selbstklebendes Band
WO2000061364A1 (en) Construction and method for undersurface laser marking
US7816302B2 (en) Printable identification medium for use with thermal printers
EP1262937A1 (de) Trennschicht, Datenträger sowie zugehöriges Herstellungsverfahren
KR20140135635A (ko) 아이템 마킹용 라벨 및 제조방법
JPH09197968A (ja) 貼り替え防止シール
US20060019051A1 (en) Method and system for applying a finely registered printed laminated overlay to a substrate
US20240185743A1 (en) Direct thermal label and method of use
JP7214307B2 (ja) 不正検知シール、及び、不正検知シールセット
JP3059666U (ja) 印鑑登録証明書偽造防止ラベル
US20100224315A1 (en) Tape systems for refacing racks, shelves, labeling surfaces and the like
US20060097513A1 (en) Identification Label
SE507711C2 (sv) Förfarande för framställning av etikettmaterial innefattande laminat med komponenter

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

17P Request for examination filed

Effective date: 20030408

AKX Designation fees paid

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

17Q First examination report despatched

Effective date: 20030909

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20040503