US3871119A - Laminated identification card - Google Patents

Laminated identification card Download PDF

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US3871119A
US3871119A US22969972A US3871119A US 3871119 A US3871119 A US 3871119A US 22969972 A US22969972 A US 22969972A US 3871119 A US3871119 A US 3871119A
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card
print
photographic
photographic print
comprises
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Simon E Mayer
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AVANT IND Inc
AVANT Inc
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AVANT IND Inc
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00Layered products comprising a layer of synthetic resin
    • B32B27/06Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/10Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of paper or cardboard
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00Layered products comprising a layer of synthetic resin
    • B32B27/06Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00Layered products characterised by the relation between layers, i.e. products comprising layers having different physical properties and products characterised by the interconnection of layers
    • B32B7/04Layered products characterised by the relation between layers, i.e. products comprising layers having different physical properties and products characterised by the interconnection of layers characterised by the connection of layers
    • B32B7/12Layered products characterised by the relation between layers, i.e. products comprising layers having different physical properties and products characterised by the interconnection of layers characterised by the connection of layers using an adhesive, i.e. any interposed material having adhesive or bonding properties
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B42BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42DBOOKS; 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
    • B42D25/00Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B42BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42DBOOKS; 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
    • B42D25/00Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/20Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
    • B42D25/23Identity cards
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B42BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42DBOOKS; 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
    • B42D25/00Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30Identification or security features, e.g. for preventing forgery
    • B42D25/309Photographs
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B42BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42DBOOKS; 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
    • B42D25/00Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/40Manufacture
    • B42D25/405Marking
    • B42D25/415Marking using chemicals
    • B42D25/42Marking using chemicals by photographic processes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B42BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42DBOOKS; 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
    • B42D25/00Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/40Manufacture
    • B42D25/45Associating two or more layers
    • B42D25/465Associating two or more layers using chemicals or adhesives
    • B42D25/47Associating two or more layers using chemicals or adhesives using adhesives
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2327/00Polyvinylhalogenides
    • B32B2327/06PVC, i.e. polyvinylchloride
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2329/00Polyvinylalcohols, polyvinylethers, polyvinylaldehydes, polyvinylketones or polyvinylketals
    • B32B2329/04Polyvinylalcohol
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2425/00Cards, e.g. identity cards, credit cards
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B42BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42DBOOKS; 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
    • B42D2033/00Structure or construction of identity, credit, cheque or like information-bearing cards
    • B42D2033/04Transparent material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B42BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42DBOOKS; 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
    • B42D2033/00Structure or construction of identity, credit, cheque or like information-bearing cards
    • B42D2033/30Plastic material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B42BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42DBOOKS; 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
    • B42D2035/00Nature or shape of the markings provided on identity, credit, cheque or like information-bearing cards
    • B42D2035/02Nature of the markings
    • B42D2035/08Alphanumerical data
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B42BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42DBOOKS; 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
    • B42D25/00Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/40Manufacture
    • B42D25/45Associating two or more layers
    • B42D25/455Associating two or more layers using heat
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00Stock material or miscellaneous articles
    • Y10S428/916Fraud or tamper detecting
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/26Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension
    • Y10T428/269Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension including synthetic resin or polymer layer or component
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/31504Composite [nonstructural laminate]
    • Y10T428/31786Of polyester [e.g., alkyd, etc.]
    • Y10T428/31797Next to addition polymer from unsaturated monomers

Abstract

A permanent identification card is disclosed having a photographic print with identifying indicia thereon. Typically, the photographic print is a color diffusion transfer print having thereon a picture of the cardholder and certain other information. An adhesive composition is used to laminate an optically-transparent, plastic, protective sheet, such as polyvinyl chloride, to the surface of the photographic print. The adhesive composition contains a thermally-activatable polyester adhesive capable of bonding the plastic sheet to the treated photographic print and a peroxide bonding promoter.

Description

a United States Patent 11 1 1111 3,871,119 Mayer 1' Mar. l8, 1975 [54] LAMINATED IDENTIFICATION CARD 3,696,065 10/1972 Hoffman et a1 117/122 PA 3,716,439 2/1973 Maeda 40/22 [75] Inventor: Maye'h Levmgtonh Massh 3,726,817 4/1973 Niswonger 161/232 [73] Assignee: Avant Incorporated, Lincoln, Mass.

7 Primary E.raminerGeorge F. Lesmes Flled' 1972 Assistant Examiner-Stanley S. Silverman 211 App] N 229 699 Attorney, Agent, or Firn1Robert L. Nathans; David E. Brook [52] US. Cl 40/2.2, 161/146, 161/182, [57] ABSTRACT 161/231 161/247 ;gd7 A permanent identification card is disclosed having a [51] Int Cl b M photographic print with identifying indicia thereon. [58] 11,11 011111111;1111111151111 "1515:5"1.5- 16111 Typically, the photographic hhhh h h hhhh hhhhhh 161/6 232 117/l22PA 122 transfer print having thereon a picture of the card- 260/33 k 75 holder and certain other information. An adhesive composition is used to laminate an opticallytransparent, plastic, protective sheet, such as polyvinyl 56] References Cited chloride, to the surface of the photographlc print The UNITED STATES PATENTS adhesive composition contains a thermally-activatable 2,879,249 Raichle BI fli. polyester adhesive apable of bonding the plastic 2,994,632 8/1961 Brown et a1. 161/232 Sheet to the treated photographic prim and a peroxide 3,484,339 12/1969 Caldwell 161/232 bonding promoter 3,509,019 4/1970 Beacham 161/232 3,614,839 10/1971 Thomas 117/1 9 Claims, 3 Drawing Figures PVC /0 ADHESIVE l2 COLOR FILM l4 BACKING l6 PATENTED MR 1 8 I975 PVC /0 ADHESIVE l2 COLOR FILM l4 ckme l6 EXP. DATE FIG. 2.

SIGNATURE DEVELOPED Fl LMJZ HEATED ROLLERS 36 ADHEslvE 28 S & PVC 20 LAMINATED IDENTIFICATION CARD BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to permanent identification cards formed by bonding optically-transparent plastic sheets to the emulsion surfaces of photographic prints having identifying indicia thereon.

2. Description of the Prior Art Badges, drivers licenses, I.D. cards, credit cards, etc. often contain black and white or color photographic film with a picture of the holder together with other identifying information thereon. To protect the film, an optically-transparent plastic sheet is frequently applied over the photographic film. Customarily, a clear or pigmented, opaque, plastic sheet, such as pigmented, semi-rigid polyvinyl chloride, cellulose acetate butyrate or polymerized glycol esters, is applied on the opposite side.

Often, the front and rear plastic sheets are provided in the form ofa plastic pouch having one or more open sides. The open edges are heat sealed after the film is slipped into the pouch. One serious drawback to such pouches is that the film is loosely held inside the pouch, and it can be easily removed if the pouch is opened. This presents a severe security problem since the photographic film can be removed and another piece inserted in its place.

Because of this, there is a great need for an adhesive composition which would uniformly bond the surface of photographic prints to an optically-transparent, plas-. tic, protective sheet over the entire surface area of the print. With such an adhesive, a laminated structure could be prepared so that it would be impossible to separate the protective sheet from the print surface without destroying the picture and/or other information on the print. Such a system would provide much more security as can be easily appreciated.

While many adhesives are known, they have proven to be unsatisfactory for this particular application for one reason or another. An example of attempts to use a commercially available adhesive is illustrated in US. Pat. No. 3,614,839, to Thomas, which teaches that ethylene/vinyl acetate copolymer adhesives can be used in such laminates. Nevertheless, the use of standard adhesive compositions, such as these, has not proven to be adequate.

This is not surprising in view of the many stringent requirements for adhesive compositions in such laminates. Among these requirements are the following:

Since many photographic films have emulsions containing polyvinyl alcohol or polyvinyl alcohol and polyvinyl pyridine, the adhesive composition must bond to this emulsion. It has, however, been found extremely difficult to find adhesives that will form satisfactory bonds to this type of emulsion.

To be practical, the laminated structure must not delaminate under a wide variety of environmental conditions such as temperatures to 120F. and humidities to 100%. Additionally, for security purposes, the bond must be strong enough to withstand attempts to separate the plastic film from the emulsion so that any such attempts result in destruction of the photographic emulsion.

Because the print must be easily viewable, the adhesive composition must be optically-transparent in its dry state. It might or might not be optically transparent in its wet state, and might even, in some cases, present an advantage if it is not clear in its wet state because any parts of the laminated structure not properly cured could be immediately noted.

It must bond to black and white or color prints, and to freshly-processed and wet or old and dry prints.

It must be heat-activatable under minimum time/- temperature conditions, such as being activated by a heated plate at 250F. for a dwell time of less than 10 seconds.

Sheets coated with the adhesive compositions must be non-blocking, i.e., not adhere to themselves, and also must not adhere to other materials, under extreme environmental conditions such as temperatures up to 140F. and relative humidities up to It must not degrade the information contained on the photographic print in any manner. This is a particularly stringent requirement with the sensitive but complex physical structure and chemical formulation of color diffusion transfer prints.

It must have good shelf life, often at least six months or more.

It must be precision coatable.

Frequently, a plastic sheet is also bonded to the nonemulsion side of the film. This film can be clear, or pigmented to make it embossable. It is desirable, therefore, that the adhesive composition used to bond the protective plastic sheet to the front surface of the print will also bond the desired plastic to the back of the print, which is customarily coated baryta paper, and will also bond the edges of the two plastic sheets at their outer periphery. The bond at the edges of the two plastic sheets must be an extremely good one because people often flex credit and identification cards thereby inducing great stresses at these points.

In addition to the above-recited requirements, it is very desirable to have an adhesive composition which can be used in a single coat method.

SUMMARY OF AN EMBODIMENT OF THE INVENTION One embodiment of this invention comprises an identification card formed by bonding an opticallytransparent, plastic sheet, such as polyvinyl chloride, to the surface of a black and white or color photographic print. The adhesive composition contains a thermallyactivatable adhesive and a bonding promoter which converts normally non-bondable photographic emulsions to a bondable state.

Typically, the photographic print is a diffusion transfer print having an emulsion containing a combination of polyvinyl alcohol and polyvinyl pyridine at its surface. The polyvinyl alcohol/polyvinyl pyridine combination has been found to be non-bondable with traditional adhesives. A suitable adhesive composition for this combination of materials has been found to be certain polyester resin adhesives with certain peroxide bonding promoters.

Of course, additional ingredients can be added to improve the basic adhesive composition. Such ingredients might include, for example: compounds which swell polyvinyl alcohol emulsions such as glycols; wetting agents such as dimethylsulfoxide; and other ingredients typically used in adhesive compositionswhich are well known to those skilled in the art.

The above-described identification cards and adhesive compositions therefor have been found to have many advantages over any heretofore known. Simply stated, they have been found to meet all of the stringent requirements as set forth above.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a plan view of a drivers license, prepared according to this invention;

FIG. 2 is a sectional view of a permanent identification card prepared according to this invention; and,

FIG. 3 is a diagrammatical view illustrating the production of permanent identification cards according to this invention.

DESCRIPTION OF PREFERRED EMBODIMENTS OF THE INVENTION The permanent identification cards described herein are laminated structures formed from opticallytransparent, plastic, protective sheets bonded to the emulsion surfaces of photographic prints.

In forming such laminated structures, it is customary to use a diffusion transfer photographic print because of the speed and ease with which they can be developed. Suitable systems for taking prints and making laminates therefrom include those marketed under the trademarks QUAD and DUOMATIC by Avant, Inc., Concord, Mass. Typical diffusion transfer films are described in the following US. Pat. Nos. 2,983,606; 3,113,866; 3,148,061; 3,222,171; 3,246,984; and, 3,255,002. The teachings of all of these patents are hereby incorporated by reference.

Diffusion transfer films often have an emulsion having a topcoat formed from polyvinyl alcohol, alone, or in combination with a polyvinyl pyridine such as poly- 4-vinyl-pyridine. Often, such topcoats comprise about 3 parts polyvinyl alcohol and about 1 part polyvinyl pyridine. It is possible, of course, to use films other than diffusion transfer films, including conventional silver halide black and white or color films, those films utilizing reversibly-activatable photoconductors, print-out films, etc. Also, it is possible to use films which have emulsions formed from materials other than polyvinyl alcohol and polyvinyl pyridine, such as gelatin emulsions. v

The optically-transparent, protective, plastic film laminated to the surface of the print is very often a vinyl film, and most often is a clear rigid or semi-rigid polyvinyl chloride. Other clear plastic films such as copolymers of polyvinyl chloride and polyvinyl acetate, polyethylene terephthalate and polycarbonate could, of course, be used.

Permanent identification cards and their production according to this invention can be further illustrated by referring to the Figures.

FIG. 1 illustrates a drivers license 2 having a picture of the licensed operator and certain other identifying indicia thereon. The operators picture and other identifying indicia are customarily placed on licenses of this type photographically. As described above, it is typical to use color diffusion transfer films for this purpose.

FIG. 2 illustrates a cross-sectional view of a permanent identification card such as the license shown in FIG. 1. As can be seen, these identification cards are formed from several distinct layers laminated together. Backing l6 protects the rear surface of color film 14. This layer is optional, but when used, usually comprises a relatively stiff plastic film such as rigid polyvinyl chloride, cellulose acetate butyrate or polyglycol esters,

often pigmented to make it embossable. A typical thickness for backing 16 in drivers licenses, credit cards, etc. is 10-25, and preferably 20 mils. Backing 16 is laminated to the rear of color film 14 by an adhesive which may be the ones described herein, or may be traditional adhesives since the back of color film 14 is usually coated baryta paper which easily bonds to plastic materials using standard adhesives.

As mentioned above, color film 14 is typically a color diffusion transfer film, such as those produced by P0- laroid Corp., Waltham, Mass, but can additionally be other types of photographic film. Typically, color diffusion transfer film is about 9 mils thick, but this is not a limiting parameter.

Adhesive layer 12, as described herein, is applied between the emulsion side of color-film l4 and protective PVC sheet 10. The adhesive is heat-activatable, and is typically applied as a heated solution in a layer 0.5-4 mils, and preferably 1.25-1.50 mils thick. Strong bonds are formed by the laminating procedure described infra. Customarily, PVC sheet 10 is about l-l0 mils,-and preferably about 5 mils, thick.

FIG. 3 illustrates the production of laminated, permanent identification cards. A sheet of optically transparent polyvinyl chloride 20 passes through guide rollers 22 and 24, after which solvent-based liquid adhesive 26 is applied. Doctor blade 30 is adjusted to provide the desired adhesive layer thickness. Developed film 32, having identifying indicia thereon, passes around guide roller 34 and is brought into contact with cooled adhesive layer 28. A strong bond is formed between developed film 32 and polyvinyl chloride layer 20 by passing the composite material through heated, pressure rollers 36. Typical laminating conditions are temperatures of 245-350F., pressures of 20-75 psi, and dwell times of 2-5 seconds. The preferred laminating conditions are temperatures around 300F., pressures around 25 psi, and dwell times of about 3 seconds.

New adhesive compositions are used in the identification cards described supra.

An essential ingredient in the adhesive compositions is a thermally-activatable adhesive. This adhesive must be activatable under the conditions of bonding, i.e., typically a heated roller at 300F. is used with a dwell time of about 3 seconds, followed by the application of 2575 psi to the laminate. It must also be opticallytransparent when cured.

In view of the demanding criteria, it will be recognized that most commercially available adhesives are unsatisfactory. Certain polyester resins, but by no means all such resins, have been found suitable. Some of those which operate can be classified as medium molecular weight, linear, saturated polyesters. Two specific examples of commercially available satisfactory polyester adhesives are: Vitel 207 sold by Goodyear; and, USM 7140 sold by USM Corp. Some of the characterizing properties of Vitel 207 resins are: color, staw; odor, none; specific gravity, 1.215; intrinsic viscosity, 0.775 1': 0.03; Tg, 6C; R & B softening point, 252F.; tensile strength, 3,500; elongation, 700%;

MVTR, 50.0; 0 diffusion, 148; hydroxyl number,

2.53.0; and, heat seal temperature, 350F. Those skilled in the art will know or be able to ascertain many other suitable polyester adhesives which are suitable because their physical and chemical characteristics are close to those presented.

In addition, it has been found highly desirable, although not necessary, to include in the adhesive compositions a copolymer of vinyl pyrrolidone with a comonomer which makes the copolymer substantially compatible with polyester resins. By substantially compatible, it is not means that the copolymer is completely soluble. It might be slightly insoluble, i.e., so that a slight haze is formed. It is important, however, that the copolymer does not completely settle out of the adhesive as a homopolymer of vinyl pyrrolidone would. Two suitable copolymers are sold under the trade names Kollima 55 and 75 by GAF, and are copolymers of polyvinyl pyrrolidone and polyvinyl acetate. Other suitable comonomers besides vinyl acetate include certain acrylics such as ethyl acrylate and butyl acrylate. Although the function of the copolymer of vinyl pyrrolidone is not totally understood, it has been surprisingly found that this ingredient increases the capability of the adhesive compositions to bond to both new, wet prints and to old, dry prints. Also, it seems to enhance the non-blocking characteristics of films having the adhesive composition thereon.

Since most photographic emulsions are naturally non-bondable, and particularly those having topcoats containing polyvinyl alcohol alone or with polyvinyl pyridine, it has been found that an essential ingredient in the adhesive compositions described herein comprises a bonding promoter. This bonding promoter serves the function of converting the emulsion from a non-bondable to a bondable condition.

Where the emulsion contains a mixture of polyvinyl alcohol and polyvinyl pyridine, it has been found that suitable bonding promoters comprise one or more organic peroxide or hydroperoxide compounds. In choosing suitable peroxides, a balance must be struck between higher-activity peroxides which are desirable from the viewpoint of maximizing their promoter qualities, and lower-activity peroxides which are desirable from the viewpoint of improving shelf life. In general, it has been found that peroxide promoters should have a half-life above about hours at 50C. but a half-life of under about 5 minutes at 100C. Those skilled in the art will know suitable peroxides, keeping these parameters in mind, or will be able to determine them by no more than routine experimentation. Nevertheless, the following specific peroxides, which have been found to be suitable, are pointed out: benzoyl peroxide; 2,5- dimethylhexane-2,5-di-per(Z-ethylhexanoate), sold commercially under the trade name USP 245, and 2,4- dichlorobenzoyl peroxide, sold commercially in dibutyl phthalate under the trade name Luperco CDB. The most preferred bonding promoter comprises equal parts by weight of USP 245 and Luperco CDB.

While not intending to be bound by this theory, it is believed that the peroxide promoters oxidize the pyridine rings, and may also attack unreacted vinyl groups, which is responsible for causing the normally nonbondable emulsion to become bondable. Aside from the theory, it has been repeatedly empirically observed that the peroxide promoters are efficacious in converting normally non-bondable polyvinyl alcohol/polyvinyl pyridine emulsion surfaces of diffusion transfer prints to a bondable condition.

Swelling agents for the photographic emulsion are also used in the adhesive compositions. For polyvinyl alcohol/polyvinyl pyridine emulsions, glycols have been found satisfactory. Here again, a balance is required between lower molecular weight glycols which have better emulsion permeability and higher molecular weight glycols which have concomittantly higher vapor pressures insuring that they wont be rapidly volatilized during the lamination process. It has been found desirable to have the glycol or mixturesof glycols have equivalent molecular weights between 35 and 400. By way of specific examples, equal proportions by weight of tetraethylene glycol, Quadrol (substituted quartenary amine glycols having an equivalent molecular weight around 400 sold by Wyandotte), and dimethylsulfoxide have been found to provide an outstanding swelling agent. The dimethylsulfoxide is added for its wetting properties. With the above parameters in mind, those skilled in the art will be able to determine many other suitable combinations of glycols and wetting liquids to serve as a swelling agent.

The adhesive compositions described herein have definite limits on the amount of the possible constituents as would be expected. Broadly, the new compositions contain three types of ingredients, i.e., adhesive, bonding promoter, and swelling agent. It is believed that the adhesive (including a polyvinyl pyrrolidone copolymer, if present) should comprise about 69-94%, and preferably about 89.5%; the bonding promoter should comprise about 0.22%, and preferably about 0.5-l.5%; and the swelling agent should comprise about,5-29%, and preferably about l0l9.5%. Additionally, when a copolymer of polyvinyl pyrrolidone is used, it should comprise about 225%, and preferably about l0l5%, by weight, of the total of the adhesive component. Since some ingredients come in solvents, such as the polyester resins, the above weight percentages are based on a dry basis for consistency.

In most cases, the adhesive compositions described herein will bond the clear plastic sheet directly to the print, but in some cases it is necessary to use a second or tie coat.

Of course, many additionally ingredients commonly used in adhesive compositions can be added to the basic compositions described herein without departing from the scope of the invention. Such ingredients are well known to those skilled in the art and are included within the scope of the compositions claimed in the appended claims.

Unless otherwise specified, all percentages presented herein are by weight. The following Example further illustrates the invention.

EXAMPLE I Equal parts (1 part) by weight of the peroxides USP 245 and Luperco CDB are added to 31 parts of dimethylsulfoxide. This mixture is combined with 33 parts of tetraethylene glycol 33 parts of Quadrol, and the resulting solution is mixed well in a ball mill. Twenty parts of the combined solution is transferred to a closed stainless steel reactor equipped with an agitator and a reflux condenser. One hundred parts of a resin adhesive formed from 80 parts of USM 7140 (polyester in 40% solution of iso-toluene) and 20 parts of Kollima 55 (copolymer of polyvinyl pyrrolidone/polyvinyl acetate in 50% solution of iso-propanol) is mixed in with constant agitation and under a nitrogen blanket.

To test the resulting adhesive composition, colored Polaroid diffusion transfer prints, both wet and dry, are laminated to a piece of clear polyvinyl chloride having a thickness of 5 mils. Lamination is accomplished by passing the composite through rollers which apply 25 psi and are heated to 300F. with a dwell time of 3 seconds. After cooling, the protective polyvinyl chloride sheets have peel strengths in excess of 10 pounds per linear inch. Attempts to manually separate the PVC sheet from the print with the aid of a knife edge result in destruction of the emulsion before the bond is broken.

What is claimed is:

1. A permanent identification card comprising a photographic print having identifying indicia thereon and an optically-transparent, plastic sheet bonded to said photographic print by a heat-activatable, medium molecular weight, linear, saturated polyester adhesive composition containing from about 0.2% to about 2% by weight of an organic peroxide bonding promoter, and about 2% to about 25% by weight of a copolymer formed from vinyl pyrrolidone and a comonomer substantially compatible with said polyester adhesive, said weight percent being based on the total of the polyester adhesive and vinyl pyrrolidone copolymer said polyester adhesive composition also being opticallytransparent when cured.

2. A card of claim 1 wherein said organic peroxide bonding promoter comprises a material selected from the group consisting of benzoyl peroxide, 2,5-dimethylhexane-2,5-di-per (Z-ethylhexanoate) and 2,4-dichlorobenzoyl peroxide.-

3. A card of claim 1 wherein said organic peroxide bonding promoter comprises equal parts by weight of 2,5-dimethyl-hexane-2,5-di-per (2-ethylhexanoate) and 2,4-dichlorobenzoyl peroxide.

4. A card of claim 3 wherein said copolymer comprises a copolymer of vinyl pyrrolidone and vinyl acetate.

5. A card of claim 4 wherein said photographic print comprises a diffusion transfer print.

6. A card of claim 4 wherein said photographic print comprises a color diffusion transfer print.

7. A card of claim 6 wherein the photographic emulsion of said color diffusion transfer print has a topcoat containing polyvinyl alcohol and polyvinyl pyridine.

8. A card of claim 7 wherein said plastic sheet comprises polyvinyl chloride.

9. A card of claim 8 which additionally contains a protective plastic sheet bonded to the rear of said photographic print.

Claims (9)

1. A PERMANENT IDENTIFICATION CARD COMPRISING A PHOTOGRAPHIC PRINT HAVING IDENTIFYING INDICIA THEREON AND AN OPTICALY-TRANSPARENT, PLASTIC SHEET BONDED TO SAID PHOTOGRAPHIC PRINT BY A HEAT-ACTIVATABLE, MEDIUM MOLECULAR WEIGHT, LINEAR, SATURATED POLYESTER ADHESIVE COMPOSITION CONTAINING FROM ABOUT 0.2% TO ABOUT 2% BY WEIGHT OF AN ORGAIC PEROXIDE BONDING PROMOTER, AND ABOUT 2% TO ABOUT 25% BY WEIGHT OF
2. A card of claim 1 wherein said organic peroxide bonding promoter comprises a material selected from the group consisting of benzoyl peroxide, 2,5-dimethylhexane-2,5-di-per (2-ethylhexanoate) and 2,4-dichlorobenzoyl peroxide.
3. A card of claim 1 wherein said organic peroxide bonding promoter comprises equal parts by weight of 2,5-dimethyl-hexane-2,5-di-per (2-ethylhexanoate) and 2,4-dichlorobenzoyl peroxide.
4. A card of claim 3 wherein said copolymer comprises a copolymer of vinyl pyrrolidone and vinyl acetate.
5. A card of claim 4 wherein said photographic print comprises a diffusion transfer print.
6. A card of claim 4 wherein said photoGraphic print comprises a color diffusion transfer print.
7. A card of claim 6 wherein the photographic emulsion of said color diffusion transfer print has a topcoat containing polyvinyl alcohol and polyvinyl pyridine.
8. A card of claim 7 wherein said plastic sheet comprises polyvinyl chloride.
9. A card of claim 8 which additionally contains a protective plastic sheet bonded to the rear of said photographic print.
US3871119A 1972-02-28 1972-02-28 Laminated identification card Expired - Lifetime US3871119A (en)

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Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4077145A (en) * 1975-04-16 1978-03-07 Smoczynski Frank E Number plates for racing vehicles
FR2396359A1 (en) * 1976-08-16 1979-01-26 Gen Binding Corp identity card pocket
EP0018887A1 (en) * 1979-04-24 1980-11-12 Rhone-Poulenc Systemes Process for the manufacture of a tamperproof identification card comprising photographs, and card obtained by this process
DE2952322A1 (en) * 1979-12-24 1981-07-02 Agfa Gevaert Ag Documents resistant to falsification - are coated with a transparent plastic film bonded with radiation curable adhesive
EP0031521A2 (en) * 1979-12-24 1981-07-08 Agfa-Gevaert AG Method of making alternation-proof documents
DE3027759A1 (en) * 1980-07-22 1982-02-25 Agfa Gevaert Ag Falsification proof credit card - is laminated, with transparent layer protecting information carrier, covered with hardening substance and subjected to radiation
US4324421A (en) * 1978-12-30 1982-04-13 Hoechst Aktiengesellschaft Identity card with incorporated fibrids
EP0070507A1 (en) * 1981-07-20 1983-01-26 Interlock Sicherheitssysteme AG Method of manufacturing a card-like information carrier
EP0071162A2 (en) * 1981-07-25 1983-02-09 Hüls Troisdorf Aktiengesellschaft Forgery resistant sheet element of synthetic material and manufacturing process thereof
WO1983002081A1 (en) * 1981-12-14 1983-06-23 California Interface Software Engraved image identification card
US4420174A (en) * 1981-12-14 1983-12-13 California Interface And Software Limited Partnership Identification card bearing latent image perceptible in the presence of background light
US4451068A (en) * 1981-12-14 1984-05-29 California Interface And Software Limited Partnership Engraved image identification card with opaque cover layer
US4455359A (en) * 1981-07-30 1984-06-19 Agfa-Gevaert Aktiengesellschaft Tamper-proof document
US4456667A (en) * 1981-07-30 1984-06-26 Agfa-Gavaert Aktiengesellschaft Tamperproof document and a process for producing the same
US4486033A (en) * 1983-07-15 1984-12-04 Beatrice Foods Co. Sublimable dye imaging of lottery ticket and commercial game coupon and the like
US4506915A (en) * 1978-10-18 1985-03-26 Gao Gesellschaft Fur Automation Und Organisation Mbh Identification card with a relief-type surface and a process for producing the same
US4583766A (en) * 1984-05-08 1986-04-22 Kenneth R. Wessel Secure badge for infrared badge reader and process for making same
GB2191988A (en) * 1986-06-24 1987-12-31 Christopher Paul Document mounting means
US4960670A (en) * 1987-05-13 1990-10-02 Fuji Photo Film Co., Ltd. Formulation of barcodein microencapsulated diazo thermodevelopable photo-recording method utilizing electric current activated minute matrixes to light record
GB2259051A (en) * 1991-08-24 1993-03-03 Oakwood Design Laminated plastic identification card
DE4316052A1 (en) * 1992-09-25 1994-03-31 Fujipla Inc Laminated plastics card - has covering transparent plastics film adhesive bonded by satd. polyester resin
EP0669214A1 (en) 1989-05-23 1995-08-30 Werner Vogt Method of applying and sealing of information on an information carrier in the form of a card
WO1997018075A1 (en) * 1995-11-10 1997-05-22 Austria Card Plastikkarten Und Ausweissysteme Gesellschaft Mbh Cover laminate for plastic cards
US5702557A (en) * 1989-05-16 1997-12-30 Ciba Specialty Chemicals Corporation Process for the production of an information carrier
WO1998035269A1 (en) * 1997-02-10 1998-08-13 Thomson Andrew Cunningham Mouldable photographic material
US6673423B2 (en) * 1999-09-10 2004-01-06 Dsm N.V. Information-carrying moulded part
US20040159707A1 (en) * 2002-10-16 2004-08-19 Dcard, Inc. Layer structure and method of manufacture for optical memory strip (OMS)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2879249A (en) * 1954-12-27 1959-03-24 Bayer Ag Hardenable mixtures of unsaturated polyesters and polymerizable ethylene derivativesand process of making
US2994632A (en) * 1958-01-21 1961-08-01 Goodrich Co B F Laminated compositions and method for their preparation
US3484339A (en) * 1966-05-02 1969-12-16 Eastman Kodak Co Blends of polyesters containing free carboxyl groups and laminate thereof
US3509019A (en) * 1967-05-16 1970-04-28 Fmc Corp Diallyl phthalate decorative laminates
US3614839A (en) * 1968-04-01 1971-10-26 Polaroid Corp Id card laminar structures and processes for making same
US3696065A (en) * 1970-03-30 1972-10-03 Hudson Pulp & Paper Corp Remoistening adhesive compositions
US3716439A (en) * 1969-12-15 1973-02-13 Omron Tateisi Electronics Co Method of manufacturing cards
US3726817A (en) * 1971-11-03 1973-04-10 D Niswonger Surface coating compositions comprising polyester resin,wax and flock and coatings thereof

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2879249A (en) * 1954-12-27 1959-03-24 Bayer Ag Hardenable mixtures of unsaturated polyesters and polymerizable ethylene derivativesand process of making
US2994632A (en) * 1958-01-21 1961-08-01 Goodrich Co B F Laminated compositions and method for their preparation
US3484339A (en) * 1966-05-02 1969-12-16 Eastman Kodak Co Blends of polyesters containing free carboxyl groups and laminate thereof
US3509019A (en) * 1967-05-16 1970-04-28 Fmc Corp Diallyl phthalate decorative laminates
US3614839A (en) * 1968-04-01 1971-10-26 Polaroid Corp Id card laminar structures and processes for making same
US3716439A (en) * 1969-12-15 1973-02-13 Omron Tateisi Electronics Co Method of manufacturing cards
US3696065A (en) * 1970-03-30 1972-10-03 Hudson Pulp & Paper Corp Remoistening adhesive compositions
US3726817A (en) * 1971-11-03 1973-04-10 D Niswonger Surface coating compositions comprising polyester resin,wax and flock and coatings thereof

Cited By (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4077145A (en) * 1975-04-16 1978-03-07 Smoczynski Frank E Number plates for racing vehicles
FR2396359A1 (en) * 1976-08-16 1979-01-26 Gen Binding Corp identity card pocket
US4506915A (en) * 1978-10-18 1985-03-26 Gao Gesellschaft Fur Automation Und Organisation Mbh Identification card with a relief-type surface and a process for producing the same
US4324421A (en) * 1978-12-30 1982-04-13 Hoechst Aktiengesellschaft Identity card with incorporated fibrids
EP0018887A1 (en) * 1979-04-24 1980-11-12 Rhone-Poulenc Systemes Process for the manufacture of a tamperproof identification card comprising photographs, and card obtained by this process
US4370397A (en) * 1979-04-24 1983-01-25 Rhone-Poulenc Systemes Presensitized plastic card, tamperproof identification card prepared therefrom, and process for manufacture of tamperproof identification card
US4389472A (en) * 1979-12-24 1983-06-21 Agfa-Gevaert Aktiengesellschaft Process for the production of documents which cannot be falsified
DE2952322A1 (en) * 1979-12-24 1981-07-02 Agfa Gevaert Ag Documents resistant to falsification - are coated with a transparent plastic film bonded with radiation curable adhesive
EP0031521A2 (en) * 1979-12-24 1981-07-08 Agfa-Gevaert AG Method of making alternation-proof documents
EP0031521A3 (en) * 1979-12-24 1981-07-22 Agfa-Gevaert Aktiengesellschaft Alternation-proof documents and method of making them
DE3027759A1 (en) * 1980-07-22 1982-02-25 Agfa Gevaert Ag Falsification proof credit card - is laminated, with transparent layer protecting information carrier, covered with hardening substance and subjected to radiation
EP0070507A1 (en) * 1981-07-20 1983-01-26 Interlock Sicherheitssysteme AG Method of manufacturing a card-like information carrier
US4635965A (en) * 1981-07-20 1987-01-13 Interlock Sicherheitssysteme Information carrier in the form of a card
EP0071162A2 (en) * 1981-07-25 1983-02-09 Hüls Troisdorf Aktiengesellschaft Forgery resistant sheet element of synthetic material and manufacturing process thereof
EP0071162A3 (en) * 1981-07-25 1983-06-15 Dynamit Nobel Aktiengesellschaft Forgery resistant sheet element of synthetic material and manufacturing process thereof
US4455359A (en) * 1981-07-30 1984-06-19 Agfa-Gevaert Aktiengesellschaft Tamper-proof document
US4456667A (en) * 1981-07-30 1984-06-26 Agfa-Gavaert Aktiengesellschaft Tamperproof document and a process for producing the same
US4420174A (en) * 1981-12-14 1983-12-13 California Interface And Software Limited Partnership Identification card bearing latent image perceptible in the presence of background light
US4451068A (en) * 1981-12-14 1984-05-29 California Interface And Software Limited Partnership Engraved image identification card with opaque cover layer
WO1983002081A1 (en) * 1981-12-14 1983-06-23 California Interface Software Engraved image identification card
US4486033A (en) * 1983-07-15 1984-12-04 Beatrice Foods Co. Sublimable dye imaging of lottery ticket and commercial game coupon and the like
US4583766A (en) * 1984-05-08 1986-04-22 Kenneth R. Wessel Secure badge for infrared badge reader and process for making same
GB2191988A (en) * 1986-06-24 1987-12-31 Christopher Paul Document mounting means
GB2191988B (en) * 1986-06-24 1990-05-30 Christopher Paul Document mounting means
US4960670A (en) * 1987-05-13 1990-10-02 Fuji Photo Film Co., Ltd. Formulation of barcodein microencapsulated diazo thermodevelopable photo-recording method utilizing electric current activated minute matrixes to light record
US5702557A (en) * 1989-05-16 1997-12-30 Ciba Specialty Chemicals Corporation Process for the production of an information carrier
EP0669214B1 (en) * 1989-05-23 1999-10-27 Werner Vogt Method of applying and sealing of information on an information carrier in the form of a card
EP0669214A1 (en) 1989-05-23 1995-08-30 Werner Vogt Method of applying and sealing of information on an information carrier in the form of a card
GB2259051A (en) * 1991-08-24 1993-03-03 Oakwood Design Laminated plastic identification card
GB2259051B (en) * 1991-08-24 1995-11-15 Oakwood Design Laminated data carrying substrates
DE4316052A1 (en) * 1992-09-25 1994-03-31 Fujipla Inc Laminated plastics card - has covering transparent plastics film adhesive bonded by satd. polyester resin
WO1997018075A1 (en) * 1995-11-10 1997-05-22 Austria Card Plastikkarten Und Ausweissysteme Gesellschaft Mbh Cover laminate for plastic cards
WO1998035269A1 (en) * 1997-02-10 1998-08-13 Thomson Andrew Cunningham Mouldable photographic material
US6544697B2 (en) 1997-02-10 2003-04-08 Digiplast N.V. Mouldable photographic material
US6673423B2 (en) * 1999-09-10 2004-01-06 Dsm N.V. Information-carrying moulded part
US20040159707A1 (en) * 2002-10-16 2004-08-19 Dcard, Inc. Layer structure and method of manufacture for optical memory strip (OMS)
US7185814B2 (en) * 2002-10-16 2007-03-06 Dcard, Inc. Layer structure and method of manufacture for optical memory strip (OMS)

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