GB2030586A - Road marking preformed from a thermoplastic composition - Google Patents
Road marking preformed from a thermoplastic composition Download PDFInfo
- Publication number
- GB2030586A GB2030586A GB7923314A GB7923314A GB2030586A GB 2030586 A GB2030586 A GB 2030586A GB 7923314 A GB7923314 A GB 7923314A GB 7923314 A GB7923314 A GB 7923314A GB 2030586 A GB2030586 A GB 2030586A
- Authority
- GB
- United Kingdom
- Prior art keywords
- marking
- road
- preformed
- road surface
- mixture
- 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- Withdrawn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
- 239000000203 mixture Substances 0.000 title claims abstract description 12
- 229920001169 thermoplastic Polymers 0.000 title claims abstract description 11
- 239000004416 thermosoftening plastic Substances 0.000 title claims abstract description 11
- 239000000654 additive Substances 0.000 claims abstract description 12
- 230000000996 additive effect Effects 0.000 claims abstract description 11
- 239000000049 pigment Substances 0.000 claims abstract description 9
- 239000000853 adhesive Substances 0.000 claims abstract description 8
- 230000001070 adhesive effect Effects 0.000 claims abstract description 8
- 235000015112 vegetable and seed oil Nutrition 0.000 claims abstract description 7
- 239000008158 vegetable oil Substances 0.000 claims abstract description 7
- 239000012615 aggregate Substances 0.000 claims abstract description 6
- 239000011230 binding agent Substances 0.000 claims abstract description 5
- 239000004014 plasticizer Substances 0.000 claims abstract description 5
- 239000002480 mineral oil Substances 0.000 claims abstract description 4
- 235000010446 mineral oil Nutrition 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 21
- 239000002245 particle Substances 0.000 claims description 9
- 239000011521 glass Substances 0.000 claims description 6
- 239000011874 heated mixture Substances 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 5
- 238000005336 cracking Methods 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 238000005520 cutting process Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 description 12
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 239000012815 thermoplastic material Substances 0.000 description 4
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 description 3
- 239000004606 Fillers/Extenders Substances 0.000 description 3
- 229920001971 elastomer Polymers 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 229920006395 saturated elastomer Polymers 0.000 description 3
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 229920001296 polysiloxane Polymers 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- MQIUGAXCHLFZKX-UHFFFAOYSA-N Di-n-octyl phthalate Natural products CCCCCCCCOC(=O)C1=CC=CC=C1C(=O)OCCCCCCCC MQIUGAXCHLFZKX-UHFFFAOYSA-N 0.000 description 1
- PYGXAGIECVVIOZ-UHFFFAOYSA-N Dibutyl decanedioate Chemical compound CCCCOC(=O)CCCCCCCCC(=O)OCCCC PYGXAGIECVVIOZ-UHFFFAOYSA-N 0.000 description 1
- YSMRWXYRXBRSND-UHFFFAOYSA-N TOTP Chemical compound CC1=CC=CC=C1OP(=O)(OC=1C(=CC=CC=1)C)OC1=CC=CC=C1C YSMRWXYRXBRSND-UHFFFAOYSA-N 0.000 description 1
- BJQHLKABXJIVAM-UHFFFAOYSA-N bis(2-ethylhexyl) phthalate Chemical compound CCCCC(CC)COC(=O)C1=CC=CC=C1C(=O)OCC(CC)CCCC BJQHLKABXJIVAM-UHFFFAOYSA-N 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- YNOPAJZHGPFETA-UHFFFAOYSA-N dodecanoic acid;hexanedioic acid Chemical compound OC(=O)CCCCC(O)=O.CCCCCCCCCCCC(O)=O YNOPAJZHGPFETA-UHFFFAOYSA-N 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 235000019198 oils Nutrition 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 229920006268 silicone film Polymers 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
- E01C23/16—Devices for marking-out, applying, or forming traffic or like markings on finished paving; Protecting fresh markings
- E01C23/18—Devices for marking-out, applying, or forming traffic or like markings on finished paving; Protecting fresh markings for applying prefabricated markings
- E01C23/185—Tape- or sheet-shape markers or carriers
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F9/00—Arrangement of road signs or traffic signals; Arrangements for enforcing caution
- E01F9/50—Road surface markings; Kerbs or road edgings, specially adapted for alerting road users
- E01F9/506—Road surface markings; Kerbs or road edgings, specially adapted for alerting road users characterised by the road surface marking material, e.g. comprising additives for improving friction or reflectivity; Methods of forming, installing or applying markings in, on or to road surfaces
- E01F9/512—Preformed road surface markings, e.g. of sheet material; Methods of applying preformed markings
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Repair (AREA)
- Road Signs Or Road Markings (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Adhesive Tapes (AREA)
Abstract
A preformed road marking is manufactured from a mixture of aggregate, pigment and thermoplastic resinous binder with an additive being one of, a rubberiser, a plasticiser, mineral oil and vegetable oil. The marking so produced can be bonded to on a road surface by the application of heat sufficient to melt the marking without distortion without the use of a separate adhesive.
Description
SPECIFICATION
Improvements in and relating to road marking
The invention is concerned with improvements in and relating to road marking.
Various methods are known for marking road surfaces, for example which continuous or broken white or yellow lines. Some methods involve the use of rigid preformed plastics markings which are attached to the road surface with adhesive. In one method the under-surface of the plastics marking is coated with adhesive from one half of a two-pack epoxy resin adhesive mix, and the road surface which is to receive the plastics marking is being treated with adhesive from the other half of the pack. The coated surfaces are brought together under compression to bond the mark to the road. The material most commonly used is rigid P.V.C. sheeting, already known for surfacing pedestrian crossings. In another method heat may be used, as well as adhesive, to apply the marking to the road surface.
Another method, perhaps most widely used to lay single or double white or yellow lines on motorways and trunk roads, involves the use of thermoplastic which already contains the necessary pigments to contrast with the colour of the existing road surface. Molten thermoplastic is sprayed out under pressure to form the desired lines on the road surface. By use of suitable mechanical controls of the spray the widths and lengths of the lines can be determined.
Alternatively, the thermoplastic can be funnelled onto the road surface between outlines previously made on the road surface using templates.
According to the present invention there is provided a method of manufacturing a preformed marking for laying on the surface of a road in the form of, for example, an individual strip, a continuous line, a letter or a shaped direction indicating symbol, the method comprising the steps of heating a mixture of aggregate, pigment and thermoplastic resinous binder with a suitable additive to produce sufficient resilience in the marking to resist chipping and cracking, forming the heated mixture into a desired shape, and allowing it to set, characterised in that the additive is selected from at least one of the following a) a rubberiser, b) a plasticiser, c) mineral oil, d) vegetable oil.
It is advantageous to form the heated mixture into the desired shape by pouring the mixture to form a sheet and cutting the required shape from the sheet while it is still hot.
The invention also provides a preformed road marking made by a method according to the previous two paragraphs.
The invention includes a method of road marking wherein preformed road marking according to the immediately preceding paragraphs is heat-bonded to the road surface without the addition of adhesive between the marking and the road surface.
The road marking may be heat bonded to the road surface either by first laying it in position on the road and then applying heat from above, or alternatively by first heating the road marking from beneath, then laying it on the road and pressing it to the road surface to obtain an immediate hot-bond.
A layer of reflective glass particles may be applied to the upper surface of the heated marking after the marking has been layed in position on the road surface.
The present invention will now be described, by way of example.
To produce a road marking according to the invention a block of thermoplastic material is heated in a vat with an additive suitable to remove the brittleness from a set layer of thermoplastic and leave it with a sufficient pliability to resist chipping and cracking, and to be handled reasonably at normal temperatures, without rendering the thermoplastic marking incapable of subsequent satisfactory bonding with the road surface.A suitable thermoplastic material is disclosed in British Standard
Specification No. 3262 in British Standard Specification No. 3262 and may comprise the following constituents:
Constituent Percentage by mass of total mixture Minimum Maximum Binder (resin and oil) 18 22 Pigment 6 Pigment and extender 18 22 Reflective particles 20 Aggregate, pigment extender and reflective 78 82 particles The aggregate can be for example silica sand, quartz or flint The extender is a powder which helps the dispersion of the pigment.Suitable additives include the following materials:- a) Rubberisers
i) Butadiene CH2=CH-CH=CH2 ii) Isoprene CH2=C-CCH3)=CH2 iii) Chloroprene CH2=CH-C-CI=CH2 b) Plasticizers
i) Tricresyl phosphate
ii) Dioctyl phthalate
iii) Dibutyl sebacate
iv) Polymeric adipate-laurate c) mineral oil d) vegetable oil
The melted mixture is then moulded or poured into the shape required, which may be a continuous line, a strip, a letter or a shaped direction indicating symbol; or alternatively the melted mixture may be poured into a sheet from which the required shape can be cut or stamped. The thickness of the sheet or marking can be adjusted according to requirements.Road markings so formed can be produced under controlled conditions at a site well removed from the road marking site, packaged and stored to await delivery to a road marking site.
When a road is to have new markings, preformed markings are delivered to the site. These are laid down on the road surface in the correct position and heat-bonded to the road surface by playing a hot jet over the line of markings.
The thermoplastic material would normally incorporate reflective glass particles, and these will automatically be incorporated in the final pre-formed marking. However it has been found that the heating of the material with the additive, followed by subsequent pouring and setting tends to cause the integral glass particles to settle down in the bottom region of the marking. When the marking is laid on the road surface therefore, a layer of reflective glass particles can be applied to the surface of the heated markings. This gives reflectability to the markings during the initial period when traffic is passing over them. By the time this top layer of reflective glass particles has worn away, the marking itself has been worn down sufficiently to expose the integral particles.
If it is subsequently desired to alter the markings on the road, or to obliterate them altogether, the markings can readily be stripped off the road after suitable preparatory treatment without unduly damaging the road surface itself. There is then no danger of the markings re-appearing on the road surface, as would be the case if they had had to be overpainted rather than being removed.
For laying single or double lines aiong extensive stretches of roadway, lines preformed as described above can be coiled onto a mechanical dispenser. The dispenser feeds out the coiled line, which can either be laid down on the road surface and heated from above, or alternatively, heated from beneath as it comes off the back of the dispenser and then pressed down on the road surface to obtain an immediate hot-bond. The dispenser could be fitted on to an existing lorry, travelling along the road surface and steadily uncoiling the pre-formed line or lines.
EXAMPLE As an experiment, one particular road marking symbol was produced as follows:
The block of road marking thermoplastic material made in accordance with the British Standard
Specification No. 3262 was heated in a vat with approximately 21% by weight of vegetable oil. When the heated mixture had melted in the vat, it was poured on to a bed of water-saturated rubber from which the surplus water had been wiped off. The water-saturated rubber sheet presented a flat surface for receiving the poured material, and the rubber sheet was contained in a tray having relatively shallow side walls so that the poured material settled out within the confines of the tray.
Silicon-impregnated paper was laid over the top surface of the still warm material after it had initially settled out over the rubber sheet. The paper was laid with the silicone film facing the roller, and enabled the material to be rolled out flat without the roller sticking to the material itself. In this way a layer approximately 1.5 mm thick was obtained, and was allowed to set.
When the material had set, the rubber sheet together with the material and the silicone
impregnated paper were transferred into a bath of water. This allowed the already water-saturated
rubber to be peeled off one face of the material, and the silicone-impregnated paper to be peeled off the
other surface as the silicone effectively transferred from one side of the paper to the other.
The thin sheet of set material so obtained is resilient to a limited degree at normal ambient
temperatures. From this sheet, a series of letters forming the word SLOW was cut to precisely
predetermined size and shape. To use these letters in a method embodying the invention, the letters
were transported at.a later date to the road surface which needed to be marked. The four letters forming
the word SLOW were then simply laid in position on the road surface, an ordinary blow torch was
played over them very rapidly and then removed, and it was found that all four letters, when cool had
bonded to the road surface.
It is envisaged that a hot air jet from a machine designed to lay road markings in this way might also be used. The mixture of thermoplastic and additive which forms the marking has a melting point of about 1 500C whereas the most intense part of a blow torch flame is typically at a temperature of about 4500 C. There is clearly a danger of burning through the marking if the blow torch is used for too long.
Care would therefore have to be taken when applying heat to the marking to avoid burning or distorting the marking itself.
It will be appreciated that the term 'road marking' should be interpreted to include marking airport runways, car parks and other suitable surfaces.
Claims (1)
1. A method of manufacturing a preformed road marking in the form of, for example, an individual strip, a continuous line, a letter or a shaped direction indicating symbol, the method comprising the steps of heating a mixture of aggregate, pigment and thermoplastic resinous binder with a suitable additive to produce sufficient resilience in the marking to resist chipping and cracking, forming the heated mixture into a desired shape, and allowing it to set, wherein the additive is selected from at least one of the following:-- a) a rubberiser, b) a plasticiser, c) mineral oil, d) vegetable oil.
2. A method according to claim 1 wherein the additive is 3% by weight of vegetable oil.
3. A method according to claim 1 or 2 wherein the heated mixture is formed into the desired shape by pouring the said mixture into a sheet and cutting the shape from the sheet.
4. A method of manufacturing preformed road marking substantially as herein described.
5. A preformed road marking manufactured by a method according to any of the preceding claims.
6. A method of road marking wherein a preformed road marking according to claim 5 is heatbonded to the road surface, without the addition of adhesive between the marking and the road surface.
7. A method according to claim 6 wherein a layer of reflective glass particles is applied to the upper surface of the heated marking after the marking has been laid in position on the road surface.
8. A method according to claim 6 or 7 wherein the road marking is heat bonded to the road surface by first laying the marking in position on the road and then applying heat from above.
9. A method according to claim 8 wherein the heat is applied from a blow torch.
1 0. A method according to claim 6 or 7 wherein the preformed marking is heated from beneath before it is laid on the road, and then pressed on the road surface to obtain a hot-bond.
1 A method according to any of claims 6 to 10 wherein preformed road marking lines are laid on the road surface from a mechanical dispenser.
12. A method of road marking substantially as herein described.
New claims or amendments to claims filed on 9 November 1979.
Superseded claims 1.
New or amended claims: CLAIMS
1. A method of manufacturing a preformed road marking in the form of, for example, an individual strip, a continuous line, a letter or a shaped direction indicating symbol, the method comprising the steps of heating a mixture of aggregate, pigment and thermoplastic resinous binder with a suitable additive to produce sufficient resilience in the marking to resist chipping and cracking, forming the heated mixture into a desired shape, and allowing it to set, wherein the additive is selected from at least one of the following:-- a) a rubberiser, b) a plasticiser, c) vegetable oil.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU37927/78A AU3792778A (en) | 1977-07-20 | 1978-07-11 | Road marking |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB2030586A true GB2030586A (en) | 1980-04-10 |
Family
ID=3724923
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB7923314A Withdrawn GB2030586A (en) | 1978-07-11 | 1979-07-04 | Road marking preformed from a thermoplastic composition |
Country Status (6)
| Country | Link |
|---|---|
| JP (1) | JPS5534281A (en) |
| BE (1) | BE877613A (en) |
| DK (1) | DK289979A (en) |
| GB (1) | GB2030586A (en) |
| NL (1) | NL7905403A (en) |
| ZA (1) | ZA793396B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0041335A3 (en) * | 1980-05-23 | 1981-12-30 | Mark Anthony Pacey | Preformed road marking |
| GB2243860A (en) * | 1990-05-03 | 1991-11-13 | Steven Pitchforth | Speed restricting device |
| WO1997030229A1 (en) * | 1996-02-19 | 1997-08-21 | Cleanosol International Ab | Premanufactured covering consisting mainly of thermoplastic materials for roads, parking areas, etc. |
| US20110123770A1 (en) * | 2004-04-02 | 2011-05-26 | Flint Trading, Inc. | Preformed thermoplastic pavement marking and method utilizing large aggregate for improved long term skid resistance and reduced tire tracking |
| EP2305887A3 (en) * | 2001-12-04 | 2013-11-06 | Flint Trading, Inc. | Method of forming an inlaid pattern in an asphalt surface |
| EP3311976A1 (en) | 2016-10-20 | 2018-04-25 | Geveko Markings Denmark A/S | Method of producing a thermoplastic marking |
| EP3315665A1 (en) | 2016-10-28 | 2018-05-02 | Geveko Markings Denmark A/S | Surface covering, method for application and kit of parts |
| EP3412433A1 (en) | 2017-06-09 | 2018-12-12 | Geveko Markings Denmark A/S | Method for producing a preformed thermoplastic surface covering and a such a covering |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60147648U (en) * | 1984-03-09 | 1985-10-01 | 東京電力株式会社 | Tape for fixing surface pine for temporary road restoration |
| JPS6241938A (en) * | 1985-08-16 | 1987-02-23 | Masabumi Uchiumi | Jet gas turbine engine |
-
1979
- 1979-07-04 GB GB7923314A patent/GB2030586A/en not_active Withdrawn
- 1979-07-06 ZA ZA793396A patent/ZA793396B/en unknown
- 1979-07-10 DK DK289979A patent/DK289979A/en unknown
- 1979-07-10 BE BE0/196234A patent/BE877613A/en unknown
- 1979-07-11 JP JP8695979A patent/JPS5534281A/en active Pending
- 1979-07-11 NL NL7905403A patent/NL7905403A/en not_active Application Discontinuation
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0041335A3 (en) * | 1980-05-23 | 1981-12-30 | Mark Anthony Pacey | Preformed road marking |
| GB2243860A (en) * | 1990-05-03 | 1991-11-13 | Steven Pitchforth | Speed restricting device |
| GB2243860B (en) * | 1990-05-03 | 1994-02-23 | Steven Pitchforth | Speed restricting device |
| WO1997030229A1 (en) * | 1996-02-19 | 1997-08-21 | Cleanosol International Ab | Premanufactured covering consisting mainly of thermoplastic materials for roads, parking areas, etc. |
| EP2305887A3 (en) * | 2001-12-04 | 2013-11-06 | Flint Trading, Inc. | Method of forming an inlaid pattern in an asphalt surface |
| US20110123770A1 (en) * | 2004-04-02 | 2011-05-26 | Flint Trading, Inc. | Preformed thermoplastic pavement marking and method utilizing large aggregate for improved long term skid resistance and reduced tire tracking |
| US9732481B2 (en) * | 2004-04-02 | 2017-08-15 | Flint Trading, Inc. | Preformed thermoplastic pavement marking and method utilizing large aggregate for improved long term skid resistance and reduced tire tracking |
| US12404642B2 (en) | 2004-04-02 | 2025-09-02 | Ennis-Flint, Inc. | Preformed thermoplastic pavement marking and method utilizing large aggregate for improved long term skid resistance and reduced tire tracking |
| EP3311976A1 (en) | 2016-10-20 | 2018-04-25 | Geveko Markings Denmark A/S | Method of producing a thermoplastic marking |
| EP3315665A1 (en) | 2016-10-28 | 2018-05-02 | Geveko Markings Denmark A/S | Surface covering, method for application and kit of parts |
| EP3412433A1 (en) | 2017-06-09 | 2018-12-12 | Geveko Markings Denmark A/S | Method for producing a preformed thermoplastic surface covering and a such a covering |
Also Published As
| Publication number | Publication date |
|---|---|
| BE877613A (en) | 1979-11-05 |
| DK289979A (en) | 1980-01-12 |
| NL7905403A (en) | 1980-01-15 |
| JPS5534281A (en) | 1980-03-10 |
| ZA793396B (en) | 1980-09-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |