DE602005003666D1 - SAFETY DEVICE WITH TEMPERATURE-ACTIVATED POLYMER LAYER - Google Patents

SAFETY DEVICE WITH TEMPERATURE-ACTIVATED POLYMER LAYER

Info

Publication number
DE602005003666D1
DE602005003666D1 DE602005003666T DE602005003666T DE602005003666D1 DE 602005003666 D1 DE602005003666 D1 DE 602005003666D1 DE 602005003666 T DE602005003666 T DE 602005003666T DE 602005003666 T DE602005003666 T DE 602005003666T DE 602005003666 D1 DE602005003666 D1 DE 602005003666D1
Authority
DE
Germany
Prior art keywords
layers
activation temperature
soft segment
temperature
polymer 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.)
Expired - Fee Related
Application number
DE602005003666T
Other languages
German (de)
Other versions
DE602005003666T2 (en
Inventor
John Philip Winchcombe
Christopher John Eastell
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.)
De la Rue International Ltd
Original Assignee
De la Rue International Ltd
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 De la Rue International Ltd filed Critical De la Rue International Ltd
Publication of DE602005003666D1 publication Critical patent/DE602005003666D1/en
Application granted granted Critical
Publication of DE602005003666T2 publication Critical patent/DE602005003666T2/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
    • D21H21/40—Agents facilitating proof of genuineness or preventing fraudulent alteration, e.g. for security paper
    • D21H21/42—Ribbons or strips
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/36—Identification or security features, e.g. for preventing forgery comprising special materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/20—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
    • B42D25/29—Securities; Bank notes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/355—Security threads
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
    • D21H21/40—Agents facilitating proof of genuineness or preventing fraudulent alteration, e.g. for security paper
    • D21H21/44—Latent security elements, i.e. detectable or becoming apparent only by use of special verification or tampering devices or methods
    • D21H21/48—Elements suited for physical verification, e.g. by irradiation
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
    • G07D7/003—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency using security elements
    • B42D2033/26—

Abstract

Security device 10 has layers 12,15 of a copolymer which switches from opaque to transparent at a specified activation temperature. These layers comprise a hard segment and a crystallisable soft segment or at least one soft segment which is crosslinked and contains a crystallisable soft segment. The device may include demetallised indicia 14 in metal layer 13. The layers 12,15 are opaque at temperatures below the activation temperature (preferably 35-37 {C) and switch to become transparent when warmed above it, revealing the indicia 14. The polymers may be oligomers. Adhesive layers 16 bond the device as a thread 17 on to a substrate from which a secure document 11 is made. Alternatively, the device may overlay an optically variable feature (30, figure 13) which becomes visible through the polymeric film 12 above the activation temperature.
DE602005003666T 2004-06-10 2005-06-09 SAFETY DEVICE WITH TEMPERATURE-ACTIVATED POLYMER LAYER Expired - Fee Related DE602005003666T2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB0412981 2004-06-10
GBGB0412981.3A GB0412981D0 (en) 2004-06-10 2004-06-10 Improvements in security devices
PCT/GB2005/002283 WO2005121450A1 (en) 2004-06-10 2005-06-09 Security device with temperature activatable polymeric layer

Publications (2)

Publication Number Publication Date
DE602005003666D1 true DE602005003666D1 (en) 2008-01-17
DE602005003666T2 DE602005003666T2 (en) 2008-11-13

Family

ID=32732269

Family Applications (1)

Application Number Title Priority Date Filing Date
DE602005003666T Expired - Fee Related DE602005003666T2 (en) 2004-06-10 2005-06-09 SAFETY DEVICE WITH TEMPERATURE-ACTIVATED POLYMER LAYER

Country Status (8)

Country Link
EP (1) EP1753915B1 (en)
AT (1) ATE380268T1 (en)
AU (1) AU2005252433A1 (en)
DE (1) DE602005003666T2 (en)
ES (1) ES2297722T3 (en)
GB (2) GB0412981D0 (en)
PL (1) PL1753915T3 (en)
WO (1) WO2005121450A1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006051524A1 (en) * 2006-10-27 2008-04-30 Giesecke & Devrient Gmbh Safety unit for safety document e.g. bank note, has visually inspectable safety feature placing automatically reversible color imprint relative to information pattern in recess, such that pattern is disguised without external stimulus
DE102007005414A1 (en) * 2007-01-30 2008-08-07 Ovd Kinegram Ag Security element for securing value documents
EP2119571A1 (en) * 2008-05-15 2009-11-18 Hueck Folien Ges.m.b.H. Tactile safety element
JP6309953B2 (en) * 2012-08-23 2018-04-11 コベストロ、ドイチュラント、アクチエンゲゼルシャフトＣｏｖｅｓｔｒｏ Ｄｅｕｔｓｃｈｌａｎｄ Ａｇ Confidential and / or valuable documents including windows that can be visually altered by holograms
US8815054B2 (en) * 2012-10-05 2014-08-26 The Procter & Gamble Company Methods for making fibrous paper structures utilizing waterborne shape memory polymers
GB2523994B (en) * 2014-03-06 2017-08-30 De La Rue Int Ltd Method of forming a security document
CN109603941B (en) * 2019-01-11 2021-08-03 京东方科技集团股份有限公司 Micro-fluidic chip system and micro-fluidic chip

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1095286A (en) 1963-07-08 1967-12-13 Portals Ltd Security device for use in security papers
GB1552853A (en) 1976-09-24 1979-09-19 Bank Of England Authentication devices
GB1604463A (en) 1976-09-24 1981-12-09 Bank Of England Security devices
IN157644B (en) 1981-02-19 1986-05-10 Portals Ltd
FR2698390B1 (en) 1992-11-20 1994-12-23 Arjo Wiggins Sa Security document authenticated by piezooptic effect.
GB2274428B (en) 1993-01-20 1996-08-21 Portals Security threads
ES2265186T3 (en) * 1998-02-23 2007-02-01 Mnemoscience Gmbh POLYMERS WITH FORM MEMORY.
DE19907697A1 (en) 1999-02-23 2000-08-24 Giesecke & Devrient Gmbh Security element with optically variable material for documents of value additionally comprises at least one machine readable distinguishing material which does not impair the effect of the optically variable material
GB2347646B (en) * 1999-03-12 2001-01-31 Rue De Int Ltd Improvements in security elements
RU2145927C1 (en) * 1999-07-16 2000-02-27 Юрий Викторович Жваколюк Method for protecting information medium against falsification
DE19941295A1 (en) * 1999-08-31 2001-03-01 Giesecke & Devrient Gmbh Security element
KR20040072672A (en) * 2001-12-21 2004-08-18 지세케 앤드 데브리엔트 게엠베하 Sheet material and apparatuses and methods for producing and processing such sheet material

Also Published As

Publication number Publication date
ATE380268T1 (en) 2007-12-15
PL1753915T3 (en) 2008-05-30
GB0412981D0 (en) 2004-07-14
GB2414962A (en) 2005-12-14
GB0511753D0 (en) 2005-07-20
DE602005003666T2 (en) 2008-11-13
WO2005121450A1 (en) 2005-12-22
GB2414962B (en) 2006-05-17
EP1753915A1 (en) 2007-02-21
EP1753915B1 (en) 2007-12-05
ES2297722T3 (en) 2008-05-01
AU2005252433A1 (en) 2005-12-22

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee