GB2573008A - Vehicle registration plates - Google Patents
Vehicle registration plates Download PDFInfo
- Publication number
- GB2573008A GB2573008A GB1806422.0A GB201806422A GB2573008A GB 2573008 A GB2573008 A GB 2573008A GB 201806422 A GB201806422 A GB 201806422A GB 2573008 A GB2573008 A GB 2573008A
- Authority
- GB
- United Kingdom
- Prior art keywords
- panel
- characters
- sets
- backing sheet
- transparent plastics
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 229920003023 plastic Polymers 0.000 claims abstract description 73
- 239000004033 plastic Substances 0.000 claims abstract description 37
- 238000000034 method Methods 0.000 claims abstract description 20
- 238000005520 cutting process Methods 0.000 claims abstract description 10
- 238000007639 printing Methods 0.000 claims abstract description 4
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 238000009966 trimming Methods 0.000 abstract description 3
- 230000001681 protective effect Effects 0.000 description 14
- 239000000853 adhesive Substances 0.000 description 12
- 230000001070 adhesive effect Effects 0.000 description 12
- 239000000463 material Substances 0.000 description 11
- 239000012790 adhesive layer Substances 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 5
- 238000003475 lamination Methods 0.000 description 4
- 238000003698 laser cutting Methods 0.000 description 4
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 3
- 230000033228 biological regulation Effects 0.000 description 3
- 238000007641 inkjet printing Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000004820 Pressure-sensitive adhesive Substances 0.000 description 1
- 239000004614 Process Aid Substances 0.000 description 1
- 239000004676 acrylonitrile butadiene styrene Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 229920002301 cellulose acetate Polymers 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 239000007888 film coating Substances 0.000 description 1
- 238000009501 film coating Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000007648 laser printing Methods 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920000193 polymethacrylate Polymers 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 238000010023 transfer printing Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
- B60R13/10—Registration, licensing, or like devices
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F7/00—Signs, name or number plates, letters, numerals, or symbols; Panels or boards
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F13/00—Illuminated signs; Luminous advertising
- G09F13/16—Signs formed of or incorporating reflecting elements or surfaces, e.g. warning signs having triangular or other geometrical shape
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F21/00—Mobile visual advertising
- G09F21/04—Mobile visual advertising by land vehicles
- G09F21/048—Advertisement panels on sides, front or back of vehicles
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Mechanical Engineering (AREA)
- Geometry (AREA)
- Business, Economics & Management (AREA)
- Accounting & Taxation (AREA)
- Marketing (AREA)
- Illuminated Signs And Luminous Advertising (AREA)
Abstract
Vehicle registration plates are manufactured by printing, or otherwise applying, multiple sets of alphanumeric characters to a transparent plastics panel and bonding a retroreflective backing sheet to the plastics panel, before cutting into individual number plates. The cutting step may be carried out by a laser cutter. The process has the advantage of avoiding a subsequent trimming step. It also provides a more effectively sealed registration plate.
Description
-1Vehicle registration plates
This invention relates to vehicle registration plates and in particular to a process for the manufacture of vehicle registration plates in which characters, such as letters and numerals, are applied to a transparent plastics panel.
Motor vehicle registration plates, sometimes known as number plates, identification plates, or licence plates are a way of identifying vehicles. Most countries regulate the properties and format of the plates, including the material of the plate as well as the size, font and colour of the characters. One type of plate conventionally comprises a transparent plastics panel bonded to a retro reflective backing sheet. In most manufacturing processes, the alphanumeric characters are either applied, for example printed, onto the back of a further film material which is then attached to the front of the plastics panel; or they may be applied onto the face of the reflective backing sheet, before it is bonded to the plastics panel, so the characters are visible through that transparent panel.
It is also known to apply the alphanumeric characters directly onto the plastics panel, for example as described in GB 2419018, preferably onto the face of the panel that will then be bonded onto the retro reflective backing sheet, so that the characters are positioned between the plastics panel and the backing sheet. Such an arrangement has the advantage of ensuring that the characters are protected from damage by the relatively thick plastics panel.
In the known manufacturing methods described above, the plastics panel is often called a 'blank', i.e. it is shaped to the size required for the final registration plate, before the printing step and bonding to the retro reflective backing sheet.
-2The disadvantage of using a blank is that the plates need to be further trimmed after the backing sheet is bonded to the blank, to ensure that both are identically shaped. That trimming adds a further step and so causes inefficiency and some wastage when part of a manufacturing process.
We have now found that the efficiency of the manufacturing process can be greatly improved by applying multiple sets of characters to a plastics panel before it is cut and shaped into registration plates.
Accordingly, the present invention provides a process for the manufacture of vehicle registration plates, which process comprises applying a plurality of sets of alphanumeric characters to a transparent plastics panel, bonding a retro reflective backing sheet to the plastics panel to provide a combination panel and subsequently cutting the combination panel into individual registration plates.
In addition, it has been found that the when the combination panel is cut, especially with a laser cutter, the edges of the plastic panel and retro reflective backing sheet form an improved seal, compared to cutting the two components separately. This improved seal reduces the risk of ingress of moisture and delamination.
A set of alphanumeric characters is an arrangement of letters and/or numbers suitable for a single vehicle registration plate and conforming to the required format of the appropriate national regulations.
The transparent plastics panel may be formed of acrylic or similar plastics material. Suitable materials include thermoplastic polymers such as polycarbonates, poly(meth)acrylates such as polymethyl methacrylate, polyolefins such as polyethylene and polypropylene, polyesters such as
-3polyethylenenaphthalates, cellulose acetate, polyvinyl chloride and copolymers such as acrylonitrile butadiene styrene (ABS).
The plastics panel suitably has a thickness from 2 mm to 6 mm, for example, from 2 mm to 4 mm. Typically, the transparent plastics panels are available having a thickness of from 2.8 mm to 3.3 mm. A preferred thickness is about 3 mm. The planar surface of the panel used in this invention is chosen to provide sufficient surface area to accommodate the number of sets of alphanumeric characters to be applied. Suitable plastics panels are known in the art and typically available in several sizes, for example about 3 metres by 2 metres, or 2 metres by 1 metre. Commercially available panels typically are supplied with a protective layer of thin plastics film, on both surfaces, one of which may be removed from the panel prior to the characters being applied thereto. A larger panel could also be cut to smaller panels, such as 2 metres by 1 metre.
In a further aspect of this invention, the combination panel comprises a further strengthening material, bonded to the rear of retro reflective backing sheet. The strengthening material may suitably be aluminium or a plastics material and will provide strength to the combination panel. In such a case, the transparent plastics panel carrying the sets of characters may be thinner, for example 1 to 2 mm in thickness.
Retro reflective sheets, for use as a backing sheet in this invention, are also well known in the art and have a surface that reflects light with a minimum of scattering. Retroreflection is the phenomenon of light rays striking a surface and being redirected back to the source of light. The sheets consist of retroreflective glass beads, micro-prisms, or encapsulated lenses sealed onto a plastics substrate. As with any retroreflector, the sheet appears bright when there is a small angle between the observer's eye and the light source, but appears nonreflective when viewed from other directions.
-4The sets of alphanumeric characters may be applied to the transparent plastics panel by any known method. Preferably, the characters are printed onto the panel, for example by thermal transfer printing, silk screen printing, by inkjet printing, or by laser printing. Most preferably, the characters are applied by inkjet printing. It is further preferred that the ink is ultra-violet curable. The printing process is generally controlled by a computer.
Alternatively, the characters may be cut out of an opaque, usually black, film material and applied to the plastics panel by means of adhesive.
Within each set of alphanumeric characters, it is also possible to apply further indicia, as allowed by, or required by, relevant government regulations. For example, the UK regulations require that each vehicle registration plate is marked with; the British Standard number; the name of the manufacturer or supplier; and the name of the supplying outlet. In addition, the indicia applied may include a country designation, useful when the vehicle is taken abroad.
Each set of alphanumeric characters is applied to the transparent plastics panel within an area corresponding to the shape and size of the final registration plate, for example within an area of 520 mm by 111 mm. The number of sets of characters applied to the plastics panel will be at least two, suitably at least 10, and preferably from 20 to 150. The size of plastics panel is chosen to accommodate the number of sets required to be applied. For example, for a 2050mm by 1060mm plastics panel, the number of sets can be typically from 28 to 40. In particular, 36 sets of characters conveniently fit onto a 2050mm by 1060mm panel. A larger panel measuring 3050mm by 2050mm is suitable used to accommodate from 100 to 110 sets of characters.
-5Each set of characters will normally require be applied twice, in order to produce two registration plates, one for the front and one for the rear of the vehicle. However, in some other countries, including the UK, it is a requirement to present different coloured retro reflective backing on the front and rear of a vehicle, i.e. white on the front and yellow on the rear. In those cases, one set of characters may be applied to a plastics panel to be bonded to a white retroreflective backing sheet and an identical set of characters also applied to a separate plastics panel to be bonded to a yellow retroreflective backing sheet.
Alternatively, it is possible to bond two retroreflective backing sheets, aligned side by side, onto the same transparent plastics panel, one backing sheet being white and the other backing sheet being yellow.
In some cases, a third registration plate is required, for example when a trailer is being towed. Such a requirement is easily accommodated by the process of this invention, by simply duplicating one or more sets of characters to be applied to the transparent plastics panel.
The transparent plastics panel and the retroreflective backing sheet may be bonded together with one or more adhesive layers. The adhesive layer may be present on either the plastics panel, or the backing sheet, or both. The adhesive layer or layers should be transparent. It is preferable that the adhesive is weather-resistant and creates a high bond strength, so that the plastics panel and backing sheet cannot subsequently be separated. Such adhesives are well known in the art. For example, the adhesive layer may comprise a pressure sensitive adhesive, or a heatactivatable adhesive.
Advantageously, the bonding of the plastics panel and the backing sheet is completed by lamination, which normally involves passing them
-6through a set of rollers. The lamination process can be operated either cold or warm.
As part of the lamination process to bond the plastics panel to the backing sheet, adhesive may be applied from rolls of adhesive, or in sheet form, or in the form of a liquid. Preferably, the adhesive is provided in rolls, with a removable protective film on one or each surface. The adhesive may be applied to either the transparent plastics panel, or, preferably, to the reflective backing sheet. In the latter case, the protective film may be removed from the adhesive layer as it is applied to the reflective sheet during the lamination process. Alternatively, and preferably, the adhesive is applied to the reflective backing sheet, prior to introduction of the backing sheet into the laminator.
If the adhesive is in the form of a liquid, it may be applied to the rollers of the laminator, or by spraying onto the transparent plastics panel.
In operating the process of this invention, it is preferable to de-stress the transparent plastics panel, before it is used in the process, to ensure that is has the required strength and impact resistance. De-stressing may be achieved by slightly softening the plastics panel, for example by heating the panel. The heating temperature depends on the material from which the transparent plastics panel is made, but is suitably at least 70 degrees centigrade, preferably at least 80 degrees centigrade. The time of heating depends on the thickness of the plastics panel. In general, at 80 degrees centigrade, the heating should be about 1 hour for every 1 mm thickness. Thus, the heating time is typically from 2 to 4 hours. The plastics panel is then cooled to room temperature.
The transparent plastics panel may be bonded to the retroreflective backing sheet either before or after the sets of characters are applied to the plastics panel. It is preferred to apply the sets of characters to the
-7plastics panel before bonding to the retro reflective backing sheet. In that way, the characters can be applied to the surface of the plastics panel that will be bonded to the backing sheet and so will be sandwiched between them. Thus, the characters will be protected by the transparent plastics panel. In this case, it is necessary to apply the characters in reverse onto the plastics panel, so that they can be viewed correctly through said panel.
It is also possible, however, to bond the transparent plastics panel to the retro reflective backing sheet prior to applying the sets of characters to the plastics panel. The characters are then applied to the combination panel in normal orientation and will be on the outer surface thereof. In that case, it will be advantageous to adhere a protective film material, or a further transparent plastics panel, over the surface carrying the sets of characters.
In either case, once the steps of applying the sets of characters and the bonding are completed, the resulting combination panel is cut to the size of individual registration plates. Suitably, cutting may be achieved by sawing or routing. Preferably, the cutting is carried out using a laser cutting machine with a programmable cut file.
Prior to the cutting step, it is advantageous to apply a removable protective film to the rear surface of the reflective backing sheet of the combination panel. The protective film is still on the surface of the transparent plastics panel. These protective films prevent the laser from burning the panel and backing materials. Once the cutting operation is complete, the protective film, at least on the transparent plastics panel, may be left in place on the individual registration plates to protect the plates in transit to the final user. It is convenient to attach an easy pull tag to the protective film, to assist the user to remove the film. Clearly,
-8the tag should be bonded with a stronger adhesive than is on between the protective film and the plastics panel.
As well as making a secondary trimming step unnecessary, a further advantage of this invention is that the laser cutting process aids the sealing of the transparent plastics panel to the retroreflective backing sheet, by fusing the edges thereof together.
Fixing holes, to enable attaching the finished registration plate to a vehicle, may also be cut using the laser cutting machine. These holes will also be sealed by the laser.
In a further aspect of this invention, there is provided a transparent plastics panel, one surface of the panel having applied thereto a plurality of sets of alphanumeric characters, each set of characters conforming with the dimensions of a vehicle registration plate.
Suitably, such a transparent plastics panel has at least 10, preferably from 20 to 150, sets of alphanumeric characters thereon. For a 2050mm by 1060mm plastics panel, the number of sets can be typically from 28 to 40. In particular, 36 sets of characters conveniently fit onto a 2050mm by 1060mm panel. A larger panel measuring 3050mm by 2050mm is suitable used to accommodate from 100 to 110 sets of characters.
There is also provided a combination panel comprising a transparent plastics panel bonded to a retroreflective backing sheet, one surface of the transparent plastics panel having applied thereto a plurality of sets of alphanumeric characters, each set of characters conforming with the dimensions of a vehicle registration plate.
-9Suitably, such a combination panel has at least 10, preferably from 20 to 150, sets of alphanumeric characters thereon. For a 2050mm by 1060mm combination panel, the number of sets can be typically from 28 to 40. In particular, 36 sets of characters conveniently fit onto a 2050mm by 1060mm panel. A larger panel measuring 3050mm by 2050mm is suitable used to accommodate from 100 to 110 sets of characters.
One embodiment of the present invention will now be described with reference to the accompanying drawings in which:
Fig 1 is a schematic representation of a transparent plastics panel, having sets of alphanumeric characters printed thereon;
Fig 2 is a schematic representation of a cross-section of a combination panel having a transparent plastics panel bonded to a retro reflective backing sheet, with sets of alphanumeric characters printed onto the bonded surface of the plastics panel.
The process is carried out as follows:
A commercially available transparent acrylic panel, with a protective film on both surfaces, is cut to a panel size of 1060mm by 2050mm. The panel is distressed by placing the panel on racks spaced 200mm apart to allow airflow. The panel is heated to 80 degrees centigrade for 3 hours, then cooled to 27 degrees centigrade.
The protective film coating is removed from one surface and the panel is placed on a flatbed laser printer. As shown in Fig 1, 36 sets of alphanumeric characters 2 are printed onto the surface of the transparent acrylic panel 1, from which the protective film was removed. Each of the sets of characters 2 occupy an area on the panel 1 conforming to the size and shape of a vehicle registration plate. Most of the sets of characters 2 are different from each other, but in the case shown, four sets are
-10repeated in order to provide an additional registration plate needed for a trailer.
A retroreflective backing sheet, also measuring 1060mm by 2050mm, and having an adhesive on its retroreflective surface is bonded to the panel 1, by passing through a laminator. As shown in Fig 2, the retroreflective sheet 3 is bonded to the surface of the panel 1 carrying the sets of characters 2, to form the combination panel 4.
The combination panel 4 is then placed on a laser cutting machine, preprogrammed to cut the panel 4 into separate registration plates, each carrying one of the sets of alphanumeric characters 2. The heat of the laser cutter fuses together the edges of each plate.
The protective film, still on the upper surface of the panel 4 remains on the surface of each of the formed registration plates. Each is provided with a pull tag, to assist in easy removal of the protective film from the registration plate.
Claims (10)
1. A process for the manufacture of vehicle registration plates, which process comprises applying a plurality of sets of alphanumeric characters to a transparent plastics panel, bonding a retroreflective backing sheet to the plastics panel to provide a combination panel and subsequently cutting the combination panel into individual registration plates.
2. A process as claimed in claim 1 wherein the characters are applied to the transparent plastics panel by printing.
3. A process as claimed in claim 1 or claim 2 wherein at least 10 sets of characters are applied to the transparent plastics panel.
4. A process as claimed in any one of claims 1 to 3 wherein the sets of characters are applied to the surface of the transparent plastics panel which surface is subsequently bonded to the retroreflective backing sheet.
5. A process as claimed in any one of claims 1 to 4 wherein the cutting step is carried out using a programmable laser cutter.
6. A vehicle registration plate produced by the process as claimed in claim 1.
7. A transparent plastics panel, one surface of the panel having applied thereto a plurality of sets of alphanumeric characters, each set of characters conforming with the dimensions of a vehicle registration plate.
8. A combination panel comprising a transparent plastics panel bonded to a retroreflective backing sheet, one surface of the transparent plastics
-12panel having applied thereto a plurality of sets of alphanumeric characters, each set of characters conforming with the dimensions of a vehicle registration plate.
5
9. A panel as claimed in either claim 7 or claim 8 wherein the panel has at least 10 sets of alphanumeric characters thereon.
10. A panel as claimed in claim 9 wherein the panel has from 20 to 150 sets of alphanumeric characters thereon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1806422.0A GB2573008A (en) | 2018-04-19 | 2018-04-19 | Vehicle registration plates |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1806422.0A GB2573008A (en) | 2018-04-19 | 2018-04-19 | Vehicle registration plates |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB201806422D0 GB201806422D0 (en) | 2018-06-06 |
| GB2573008A true GB2573008A (en) | 2019-10-23 |
Family
ID=62236090
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1806422.0A Withdrawn GB2573008A (en) | 2018-04-19 | 2018-04-19 | Vehicle registration plates |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2573008A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0457544A1 (en) * | 1990-05-15 | 1991-11-21 | Minnesota Mining And Manufacturing Company | Printing of reflective sheeting |
| EP0613804A1 (en) * | 1993-03-05 | 1994-09-07 | Stralfors Ab | Sign, preferably registration sign for vehicles, and method for the manufacture thereof |
| US5601682A (en) * | 1992-07-28 | 1997-02-11 | Moore Business Forms, Inc. | Method of making reflective decals |
| WO2002102625A1 (en) * | 2001-06-18 | 2002-12-27 | Statefresh Limited | A method of and apparatus for affixing backing to plates |
| GB2443498A (en) * | 2007-07-26 | 2008-05-07 | Hills Numberplate Holdings Ltd | A method of manufacture of an identification plate |
-
2018
- 2018-04-19 GB GB1806422.0A patent/GB2573008A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0457544A1 (en) * | 1990-05-15 | 1991-11-21 | Minnesota Mining And Manufacturing Company | Printing of reflective sheeting |
| US5601682A (en) * | 1992-07-28 | 1997-02-11 | Moore Business Forms, Inc. | Method of making reflective decals |
| EP0613804A1 (en) * | 1993-03-05 | 1994-09-07 | Stralfors Ab | Sign, preferably registration sign for vehicles, and method for the manufacture thereof |
| WO2002102625A1 (en) * | 2001-06-18 | 2002-12-27 | Statefresh Limited | A method of and apparatus for affixing backing to plates |
| GB2443498A (en) * | 2007-07-26 | 2008-05-07 | Hills Numberplate Holdings Ltd | A method of manufacture of an identification plate |
Non-Patent Citations (1)
| Title |
|---|
| "VPS investment video MASTER"; Creative Film / vimeo. 20 December 2017. See vimeo.com/248180681 * |
Also Published As
| Publication number | Publication date |
|---|---|
| GB201806422D0 (en) | 2018-06-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| COOA | Change in applicant's name or ownership of the application |
Owner name: VPS GROUP LIMITED Free format text: FORMER OWNER: ADRIAN NIGEL DAYKIN |
|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |