WO2020024016A1 - Agencement et procédé pour atténuer une propagation de déchirure dans un document - Google Patents

Agencement et procédé pour atténuer une propagation de déchirure dans un document Download PDF

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Publication number
WO2020024016A1
WO2020024016A1 PCT/AU2019/050810 AU2019050810W WO2020024016A1 WO 2020024016 A1 WO2020024016 A1 WO 2020024016A1 AU 2019050810 W AU2019050810 W AU 2019050810W WO 2020024016 A1 WO2020024016 A1 WO 2020024016A1
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WO
WIPO (PCT)
Prior art keywords
tear
substrate
arresting
gap
document
Prior art date
Application number
PCT/AU2019/050810
Other languages
English (en)
Inventor
Phei Lok
Original Assignee
Ccl Secure Pty 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
Priority claimed from AU2018902836A external-priority patent/AU2018902836A0/en
Application filed by Ccl Secure Pty Ltd filed Critical Ccl Secure Pty Ltd
Priority to AU2019314574A priority Critical patent/AU2019314574A1/en
Priority to GB2102520.0A priority patent/GB2591358A/en
Publication of WO2020024016A1 publication Critical patent/WO2020024016A1/fr

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Classifications

    • 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
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B27/00—Tools for turning or boring machines; Tools of a similar kind in general; Accessories therefor
    • B23B27/08—Cutting tools with blade- or disc-like main parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B27/00—Tools for turning or boring machines; Tools of a similar kind in general; Accessories therefor
    • B23B27/10—Cutting tools with special provision for cooling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered 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
    • B32B27/08—Layered 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered 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
    • B32B27/10—Layered 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/304—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl halide (co)polymers, e.g. PVC, PVDC, PVF, PVDF
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • B32B27/365—Layered products comprising a layer of synthetic resin comprising polyesters comprising polycarbonates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • 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
    • B42D25/346—Perforations
    • 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
    • B42D25/40—Manufacture
    • B42D25/405—Marking
    • B42D25/43—Marking by removal of material
    • 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
    • B42D25/40—Manufacture
    • B42D25/405—Marking
    • B42D25/43—Marking by removal of material
    • B42D25/435—Marking by removal of material using electromagnetic radiation, e.g. laser
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/02—2 layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/10—Coating on the layer surface on synthetic resin layer or on natural or synthetic rubber layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/12—Coating on the layer surface on paper layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/20—Inorganic coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/26—Polymeric coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/40—Properties of the layers or laminate having particular optical properties
    • B32B2307/402—Coloured
    • B32B2307/4023—Coloured on the layer surface, e.g. ink
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/40—Properties of the layers or laminate having particular optical properties
    • B32B2307/412—Transparent
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/514—Oriented
    • B32B2307/518—Oriented bi-axially
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/582—Tearability
    • B32B2307/5825—Tear resistant
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2425/00—Cards, e.g. identity cards, credit cards
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2554/00—Paper of special types, e.g. banknotes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/266—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by an apertured layer, the apertures going through the whole thickness of the layer, e.g. expanded metal, perforated layer, slit layer regular cells B32B3/12

Definitions

  • the present invention relates to an arrangement and method for mitigating tear propagation in a document, such as a banknote.
  • torn banknotes can disrupt the operation of banknote processing machines.
  • a tear in a banknote can further propagate through the banknote when the banknote is being processed by banknote processing machines, to an extent where the banknote may be torn into pieces.
  • the banknote processing machine could be jammed by torn pieces of the banknote, causing downtime and possible need for machine repairs.
  • a first aspect of the present invention provides a polymeric-based document comprising a substrate and at least one tear-arresting gap in the substrate, wherein the at least one tear-arresting gap mitigates propagation of a tear in the substrate through the tear-arresting gap.
  • the tear arresting gap inhibits propagation of a tear when the tear reaches the tear arresting gap.
  • Propagation of a tear may be substantially terminated at the tear arresting gap or the tear arresting gap slows down the propagation, dissipating energy, before the tear is arrested close by, potentially at another tear arresting gap.
  • tear arresting gaps in the document effectively contains or localises the propagation of tear in the document and prevents the tear from further propagating in the document.
  • the at least one tear-arresting gap is a hole that extends completely through the substrate, and more preferably a microperforation.
  • the melt-pool edge distance of the at least one tear-arresting gap is preferably less than about 0.5 mm in some embodiments.
  • the at least one tear-arresting gap may be formed in the substrate by boring, piercing, or punching. However, these processes are less desirable due to the risk of creating‘nicks’ or tears in the document. Furthermore, boring, piercing or punching can also create material from the document to protrude at the edges of the perforation. When many such documents are stacked on top of one another, this creates an uneven‘profile’ of the stacked documents, which is generally undesirable and, in some cases, unacceptable in further processing steps.
  • the at least one tear-arresting gap may be pre-formed in the substrate.
  • the document comprises a plurality of tear-arresting gaps.
  • a plurality of tear-arresting gaps may comprise a combination of one or more through-holes, holes that partially extend through the substrate, and/or one or more cavities formed within the substrate.
  • the maximum width of the tear-arresting gap along a depth of the tear-arresting gap is substantially constant.
  • the maximum width of the tear-arresting gap along the depth of the tear-arresting gap may vary.
  • the maximum width of the tear- arresting gap along the depth of the tear-arresting gap may be increasing or decreasing from a surface of the substrate.
  • the at least one tear-arresting gap is preferably positioned at least about 2 mm from an edge of the substrate. More preferably, the at least one tear-arresting gap is positioned at least about 10 mm from the edge of the substrate, and even more preferably, at least about 20 mm from the edge of the substrate.
  • the document comprises a plurality of tear- arresting gaps in the substrate and a distance between adjacent tear-arresting gaps is at least about 0.2 mm.
  • the distance between adjacent tear-arresting gaps is at least about 1 mm, and more preferably the distance between adjacent tear-arresting gaps is at least 2 mm.
  • the tear-arresting gaps are provided periodically in the substrate.
  • the tear- arresting gaps are provided aperiodically or randomly in the substrate.
  • the document comprises a plurality of tear-arresting gaps in the substrate, and the shapes and/or sizes of the tear-arresting gaps in the substrate are the same. In another embodiment, the shapes and/or sizes of the tear- arresting gaps in the substrate may be different.
  • the tear-arresting gap may be conical or frustoconical, or may have a trapezoidal shape.
  • the at least one tear-arresting gap may extend in a direction substantially parallel to a normal to a surface of the substrate. In an alternative embodiment, the at least one tear-arresting gap may extend at an angle to a normal to a surface of the substrate.
  • the tear-arresting gaps may include a combination of tear-arresting gaps that extend at different angles relative to a normal to a surface of the substrate.
  • the at least one tear- arresting gap extends at an angle from about 0° to about 80°, and more preferably from about 0° to about 60°, to the normal to the surface of the substrate.
  • the substrate may be formed from a composite material including at least one layer of paper and at least one layer of polymeric material.
  • the coating may comprise a polyethylene melt coat, an acrylic emulsion, a PVDC emulsion, and/or a rubber emulsion. In this manner, through holes in the substrate can be made into‘dimples’, as the coating will naturally fill the hole.
  • a second aspect of the present invention provides the use of at least one tear-arresting gap in a polymeric based document to mitigate propagation of a tear in the document through the at least one tear-arresting gap.
  • a third aspect of the present invention provides a method of
  • the substrate provides at least one tear-arresting gap in the substrate, wherein the at least one tear-arresting gap mitigates propagation of a tear in the substrate through the tear-arresting gap.
  • the method preferably comprises providing the at least one tear-arresting gap in the substrate by laser ablation, in which part of the material of the substrate is removed by the use of a laser. If the at least one tear-arresting gap is formed by laser ablation, the method comprises forming a‘melt-pool’ around the tear-arresting gap.
  • the method preferably comprises providing the at least one tear-arresting gap in the substrate by laser ablation with a melt-pool edge distance, that is the distance from the edge of tear-arresting gap to the edge of the melt-pool of less than about 0.5 mm.
  • the method comprises providing the at least one tear-arresting gap by boring, piercing, or punching. However, these processes are less desirable due to the risk of creating‘nicks’ or tears in the document.
  • the method comprises overcoating an area of the substrate with a coating and then providing the at least one tear-arresting gap in the substrate after the substrate is overcoated with the coating, such that the coating is also provided with at least one gaps corresponding to the tear arresting gap in the substrate.
  • the coating is preferably an opacifying layer.
  • the coating is a transparent coating, such as a transparent varnish.
  • the method comprises pre-forming the at least one tear-arresting gap in the substrate.
  • the method may comprise overcoating an area of the substrate with the at least one tear-arresting gap with a coating.
  • the coating is preferably an opacifying layer.
  • the coating is transparent, such as a transparent varnish, as often used as a finishing step in banknote printing.
  • the coating may comprise a polyethylene melt coat, an acrylic emulsion, a PVDC emulsion, and/or a rubber emulsion. In this manner, through holes in the substrate can be made into‘dimples’, as the coating will naturally fill the gap.
  • the present invention provides a polymeric-based document when manufactured by the method according to the third aspect of the invention described above.
  • Embodiments of the second, third, and fourth aspects of the present invention are similar to the embodiments previously described with reference to the first aspect.
  • document and‘token’ includes all types of documents and tokens of value and identification documents including, but not limited to the following: security documents, items of currency such as banknotes, credit cards, cheques, passports, identity cards, securities and share certificates, driver’s licenses, deeds of title, travel documents such as airline and train tickets, entrance cards and tickets, birth, death and marriage certificates, and academic transcripts.
  • security documents items of currency such as banknotes, credit cards, cheques, passports, identity cards, securities and share certificates
  • driver’s licenses deeds of title
  • travel documents such as airline and train tickets, entrance cards and tickets, birth, death and marriage certificates, and academic transcripts.
  • the invention is particularly, but not exclusively, applicable to documents or tokens such as banknotes or identification documents such as identity cards or passports formed from a substrate to which one or more layers of printing are applied.
  • documents or tokens such as banknotes or identification documents such as identity cards or passports formed from a substrate to which one or more layers of printing are applied.
  • the diffraction gratings and optically variable devices described herein may also have application in other products, such as packaging.
  • the term‘substrate’ refers to the base material from which the document or token is formed.
  • the base material may be paper or other fibrous material such as cellulose; a plastic or polymeric material including but not limited to polypropylene (PP), polyethylene (PE), polycarbonate (PC), polyvinyl chloride (PVC), polyethylene terephthalate (PET), biaxially-oriented polypropylene (BOPP); or a composite material of two or more materials, such as a laminate of paper and at least one plastic material, or of two or more polymeric materials.
  • PP polypropylene
  • PE polyethylene
  • PC polycarbonate
  • PVC polyvinyl chloride
  • PET polyethylene terephthalate
  • BOPP biaxially-oriented polypropylene
  • a composite material of two or more materials such as a laminate of paper and at least one plastic material, or of two or more polymeric materials.
  • One or more opacifying layers may be applied to a transparent substrate to increase the opacity of the document.
  • An opacifying layer is such that LT ⁇ Lo, where Lo is the amount of light incident on the document, and LT is the amount of light transmitted through the document.
  • An opacifying layer may comprise any one or more of a variety of opacifying coatings.
  • the opacifying coatings may comprise a pigment, such as titanium dioxide, dispersed within a binder or carrier of heat-activated cross-linkable polymeric material.
  • a substrate of transparent plastic material could be sandwiched between opacifying layers of paper or other partially or substantially opaque material to which indicia may be
  • Figure 1 shows a schematic plan view of a document according to an embodiment of the present invention
  • Figure 2 shows a schematic plan view of laser ablated tear-arresting holes in a substrate according to an embodiment of the present invention
  • Figures 3A and 3B show schematic plan views of a substrate with different arrangements of tear-arresting holes in the substrate according to an embodiment of the present invention
  • Figures 4A and 4B show schematic plan views of a substrate with different configurations of the tear-arresting holes in the substrate according to another embodiment of the present invention.
  • Figures 5A to 5C show schematic sectional views of a substrate with different angles of the tear-arresting holes in the substrate according to a further embodiment of the present invention.
  • a polymeric-based document 100 comprises a substrate 120 and a plurality of tear-arresting gaps, which in this embodiment are tear arresting holes 140 in the substrate 120.
  • the substrate 140 is preferably a transparent substrate formed from a plastic or polymeric material, such as a polypropylene film, and more preferably a transparent biaxially oriented
  • BOPP polypropylene
  • the substrate 120 with the tear-arresting holes may be overcoated with a coating, such as an opacifying layer (not shown), such that the tear-arresting holes are not readily visible.
  • a coating such as an opacifying layer (not shown)
  • the tear-arresting holes 140 may only be visible when the document is viewed at certain lighting conditions.
  • the tear-arresting holes 140 in the substrate 120 may be provided by laser ablation of material of the substrate 120.
  • each of the laser ablated holes 140 can have a‘melt-pool’ 160.
  • A‘melt pool’ is an area around a tear-arresting hole created by the laser beam that melts the material of the substrate in the borders or edges of the tear-arresting hole.
  • each of the tear-arresting holes 120 has a melt-pool edge distance d, which is a distance from an edge of the tear arresting hole 140 to an edge of the melt-pool 160, of less than about 0.5 mm.
  • each of the tear-arresting holes 140 can be provided by laser ablation without a melt-pool.
  • the substrate may be provided with a combination of at least one tear-arresting hole with a melt-pool and at least one tear-arresting hole without a melt-pool.
  • the substrate may be laser ablated such that the tear-arresting gap has a varying diameter or width through the substrate.
  • Each of the tear-arresting gaps is a tear arresting holes 140, which is a through-hole that extends completely through the substrate 120 of the document 100 as shown in Figures 5A to 5C.
  • the tear-arresting gaps may only partially extend through the substrate, such that the tear-arresting gap substantially forms a dimple or a recess in the substrate.
  • the tear-arresting gaps may be a cavity formed within the substrate (i.e. the cavity may be an air bubble or pocket of air in the substrate).
  • the tear-arresting gaps can comprise a combination of one or more through-holes, holes that partially extend through the substrate, and/or cavities formed within the substrate.
  • the tear-arresting holes 140 have a maximum width, in this case - a diameter of the holes, falls substantially within the range from about 20 pm to about 200 pm. Preferably, the diameter of the tear-arresting holes falls substantially within the range from about 50 pm to about 100 pm.
  • one or more of the tear-arresting holes in a substrate can have a maximum width that is different from a maximum width of other tear-arresting holes in the substrate.
  • the holes can have a width that can be perceived or is resolvable by the human eye. By way of example, the width of the holes could be greater than 200 pm.
  • the tear-arresting holes 140 are positioned at least about 2 mm from an edge of the substrate 120.
  • each tear-arresting hole is positioned at least about 10 mm from the edge of the substrate. More preferably, each tear-arresting hole is positioned at least about 20 mm from the edge of the substrate.
  • one or more tear arresting holes in a substrate can have a distance to an edge of the substrate that is different from a distance of other tear-arresting holes to the edge of the substrate.
  • a distance between adjacent tear-arresting holes 140 is at least about 0.2 mm. Preferably, the distance between adjacent tear-arresting holes is at least about 1 mm, and more preferably at least about 2 mm.
  • the tear-arresting holes are provided periodically in the substrate, where the distance between the tear-arresting holes is constant. According to embodiments of the invention, a distance between some of the tear-arresting holes in a substrate may be constant, while a distance between other tear-arresting holes in the substrate may be random.
  • the document 100 comprises three or more tear-arresting holes 140 arranged in close proximity to each other in the substrate 120 that are arranged in a straight line as shown in Figure 3A.
  • the tear-arresting holes 140 can be arranged in a curved, sinusoidal, zig-zag (as shown in Figure 3B) or random distribution in the substrate 120.
  • each tear-arresting hole 140 in the substrate 120 may be the same.
  • the tear-arresting holes 140 in the substrate 120 of the document 100 have an increasing or decreasing size from a first hole, as shown in Figures 4A and 4B.
  • the sizes of the tear-arresting holes in the substrate vary in a random manner.
  • the tear-arresting holes 140 can be straight through the substrate 120 of the document 100 or could be at an angle relative to the substrate 120. As shown in Figure 5A, a depth through each of tear-arresting hole 140 can substantially parallel to a normal to a surface of the substrate 120. When the substrate 120 with the tear- arresting holes 140 is covered by a coating, the holes in this configuration will be visible when the document 100 is viewed from the front with a light source positioned directly behind the tear-arresting hole 140 with the viewing and illumination directions are generally normal to a surface of the substrate 120.
  • a depth through each of the tear-arresting holes 140 is at an angle to a normal to a surface of the substrate 120 of the document 100.
  • each tear-arresting hole 140 is at an angle from about 0° to about 80°, and preferably between about 0° to about 60°, to the normal to the surface of the substrate 120.
  • the tear-arresting holes 140 in this configuration would not be visible when the viewing and illumination directions of the document 100 are normal to the surface of the substrate 120.
  • the tear-arresting holes 140 in the configuration shown in Figures 5B and 5C will only be visible when the document 100 is tilted relative to the illumination and viewing directions.
  • a tear-arresting hole 140 on a top surface of the substrate is shown to be the same as the opening area of the tear-arresting hole on an opposite bottom surface of the substrate.
  • a tear-arresting hole may have an opening area on one surface of the substrate that is different (smaller or larger) from an opening area of the hole on the opposite surface of the substrate.
  • a diameter or width of the tear-arresting gap through the substrate increases or decreases from a surface of the substrate the tear-arresting gap.
  • the gap may be conical or frustoconical, or have a substantially trapezoidal shape.
  • a substrate 120 having a plurality of tear-arresting holes 140 can have a combination of holes with different angles through the substrate.
  • the substrate may have tear-arresting holes 140 shown in Figure 5A, tear-arresting holes 140 shown in Figure 5B and/or tear-arresting holes 140 shown in Figure 5C. In this configuration, not all of the tear-arresting holes will be visible to a viewer at any one viewing angle of the document.
  • the document is a banknote that is provided with a security feature
  • embodiments of the present invention will have negligible or only minimal impact on the security feature used to authenticate banknotes.
  • the tear-arresting holes can be configured or arranged such that the tear-arresting holes will not be visible unless the document is viewed from a particular angle.
  • the holes may be part of an existing design in the artwork on the document, so as not to be obtrusive and so as to not compromise the ability to authenticate the document.
  • the present invention additionally provides a method of manufacturing a polymeric-based document comprising: providing a substrate and providing tear- arresting holes in the substrate, wherein the tear-arresting holes inhibit or mitigate the propagation of a tear through any one of the tear arresting holes.
  • the holes are configured or arranged to terminate a propagation of a tear that propagates in the substrate towards the any one of the tear-arresting holes.

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  • Engineering & Computer Science (AREA)
  • Business, Economics & Management (AREA)
  • Accounting & Taxation (AREA)
  • Finance (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Electromagnetism (AREA)
  • General Health & Medical Sciences (AREA)
  • Optics & Photonics (AREA)
  • Toxicology (AREA)
  • Credit Cards Or The Like (AREA)
  • Laser Beam Processing (AREA)
  • Laminated Bodies (AREA)

Abstract

L'invention concerne un document à base de polymère (100) et un procédé de fabrication du document (100). Le document (100) a un substrat (120) et un ou plusieurs espaces d'arrêt de déchirure (140) dans le substrat (120). L'espace d'arrêt de déchirure (140) atténue une propagation d'une déchirure dans le substrat (120) à travers l'espace d'arrêt de déchirure (140).
PCT/AU2019/050810 2018-08-03 2019-08-02 Agencement et procédé pour atténuer une propagation de déchirure dans un document WO2020024016A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU2019314574A AU2019314574A1 (en) 2018-08-03 2019-08-02 Arrangement and method for mitigating tear propagation in a document
GB2102520.0A GB2591358A (en) 2018-08-03 2019-08-02 Arrangement and method for mitigating tear propagation in a document

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU2018902836A AU2018902836A0 (en) 2018-08-03 Arrangement and method for mitigating tear propagation in a document
AU2018902836 2018-08-03

Publications (1)

Publication Number Publication Date
WO2020024016A1 true WO2020024016A1 (fr) 2020-02-06

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PCT/AU2019/050810 WO2020024016A1 (fr) 2018-08-03 2019-08-02 Agencement et procédé pour atténuer une propagation de déchirure dans un document

Country Status (4)

Country Link
AU (1) AU2019314574A1 (fr)
FR (1) FR3084849A1 (fr)
GB (1) GB2591358A (fr)
WO (1) WO2020024016A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1134091A1 (fr) * 2000-02-29 2001-09-19 Sonoco Development, Inc. Stratifié de sécurité
US20090291245A1 (en) * 2006-07-13 2009-11-26 Arjowiggins Hybrid sheet, such as a security sheet, formed by assembling a fibrous part and a plastic part
AU2017201936A1 (en) * 2016-03-23 2017-10-12 De La Rue International Limited Security document

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1134091A1 (fr) * 2000-02-29 2001-09-19 Sonoco Development, Inc. Stratifié de sécurité
US20090291245A1 (en) * 2006-07-13 2009-11-26 Arjowiggins Hybrid sheet, such as a security sheet, formed by assembling a fibrous part and a plastic part
AU2017201936A1 (en) * 2016-03-23 2017-10-12 De La Rue International Limited Security document

Also Published As

Publication number Publication date
FR3084849A1 (fr) 2020-02-14
GB202102520D0 (en) 2021-04-07
AU2019314574A1 (en) 2021-03-18
GB2591358A (en) 2021-07-28

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