EP2099538A1 - Dispositif phosphorescent de marquage au sol - Google Patents
Dispositif phosphorescent de marquage au solInfo
- Publication number
- EP2099538A1 EP2099538A1 EP07847870A EP07847870A EP2099538A1 EP 2099538 A1 EP2099538 A1 EP 2099538A1 EP 07847870 A EP07847870 A EP 07847870A EP 07847870 A EP07847870 A EP 07847870A EP 2099538 A1 EP2099538 A1 EP 2099538A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- filaments
- ground
- microns
- phosphorescent
- phosphorescent pigment
- 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.)
- Granted
Links
- 239000000049 pigment Substances 0.000 claims abstract description 30
- 238000001125 extrusion Methods 0.000 claims abstract description 14
- 238000000034 method Methods 0.000 claims abstract description 14
- 239000000463 material Substances 0.000 claims abstract description 12
- 229920002647 polyamide Polymers 0.000 claims abstract description 12
- 239000004952 Polyamide Substances 0.000 claims abstract description 11
- 229920000642 polymer Polymers 0.000 claims abstract description 11
- 238000004519 manufacturing process Methods 0.000 claims abstract description 9
- -1 lanthanide aluminate Chemical class 0.000 claims abstract description 5
- 239000002245 particle Substances 0.000 claims description 13
- 239000005084 Strontium aluminate Substances 0.000 claims description 5
- FNWBQFMGIFLWII-UHFFFAOYSA-N strontium aluminate Chemical group [O-2].[O-2].[O-2].[O-2].[O-2].[Al+3].[Al+3].[Sr+2].[Sr+2] FNWBQFMGIFLWII-UHFFFAOYSA-N 0.000 claims description 5
- 239000002689 soil Substances 0.000 claims description 4
- 239000002861 polymer material Substances 0.000 claims description 3
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 2
- 239000000203 mixture Substances 0.000 abstract description 10
- 229910052747 lanthanoid Inorganic materials 0.000 abstract 1
- 230000032683 aging Effects 0.000 description 8
- 230000007423 decrease Effects 0.000 description 4
- 244000025254 Cannabis sativa Species 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 239000007943 implant Substances 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 229910003668 SrAl Inorganic materials 0.000 description 2
- 239000000975 dye Substances 0.000 description 2
- 238000010348 incorporation Methods 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 238000005424 photoluminescence Methods 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 230000035882 stress Effects 0.000 description 2
- 238000009864 tensile test Methods 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000004959 Rilsan Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 239000003550 marker Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000003278 mimic effect Effects 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000012764 mineral filler Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000002688 persistence Effects 0.000 description 1
- 239000003348 petrochemical agent Substances 0.000 description 1
- 239000011295 pitch Substances 0.000 description 1
- 239000011505 plaster Substances 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
- A63C19/00—Design or layout of playing courts, rinks, bowling greens or areas for water-skiing; Covers therefor
- A63C19/06—Apparatus for setting-out or dividing courts
- A63C19/08—Mechanical means for marking-out
Definitions
- the present invention belongs to the field of marking devices on the ground, and more particularly to signaling and marking on outdoor terrain, including grassed surfaces.
- an implantable marking device of the type comprising a body intended to be buried in the ground and carrying filaments erected above the surface of the ground, wherein the filaments are made of an elastic material provided with phosphorescence properties.
- devices whose general structure is of the type mentioned above are known, and which are intended to replace the permanent marking lines of sports fields usually made with a paint or a plaster . They comprise a relatively bulky body, usually buried in the ground by digging trenches, the filaments having to cover the corresponding surface.
- a marking implant comprising a body to drive into the ground, on which are fixed artificial grass blades.
- the upper part of this body is flush with the ground surface and the lower part is blunt, its overall shape being generally conical. Placement of the implant and its replacement are thus very easy, do not need to prepare the ground, or to dig because of its small size. It does not hinder the evolution of people or vehicles on the marked surface.
- the filaments of these devices are generally made from a polymeric material having, after obtaining filaments of the desired thickness (from a few tenths of a millimeter to one or even two millimeters), rigidity and flexibility characteristics that allow them to remain standing at rest and that they bow to the passage of a user of the marked terrain without risking harming the user or to damage the device. Another feature of these devices is that the filaments are elastic and resume their position immediately after the passage of the user.
- the device is clearly visible to users at any time of day and night. It can be done by adding dyes to the polymers so that the marking is well contrasted with the shade of the soil. However, these dyes do not provide a sufficient visual effect for the marking remains apparent in the dark.
- the present invention aims to meet this requirement by providing an implantable device for marking the ground, visible day and night, consisting of a body intended to be buried in the ground and of filaments carried by said body, standing at the surface, the filaments being made of a phosphorescent polymeric material.
- composition of the compound makes it possible to meet the following specifications: - the longest possible light emission time, at least several hours and preferably about ten hours,
- the invention thus aims to propose a new type of simple and easy-to-use ground marking device intended to constitute visible marking at any time.
- a soil marking device comprising a body intended to be buried in the ground and carrying filaments protruding above the surface of the ground, said device being characterized in that the filaments are made of a material polymer comprising a polyamide base and a phosphorescent pigment.
- the device can be, for example, constituted in its lower part of a body in the form of a cone which easily sinks into the ground and which ensures the holding in place of the device, and in its upper part, filaments about ten centimeters that remain erected on the ground and thus constitute the visible marker organ by the user.
- the body is made of a rigid material, for example plastic material such as polypropylene.
- the filaments are flexible and elastic so that they lie down under the foot or when passing a vehicle and straighten immediately after. They are made of a polymer material whose composition gives them both these mechanical properties and photoluminescence properties.
- the phosphorescent pigment is chosen from rare earth aluminates.
- the phosphorescent pigment is a strontium aluminate.
- SrAl 2 O 4 the compound of formula SrAl 2 O 4 : Eu, Dy emitting a green light at 520 nm and 365 nm or else SrAh 4 O 2S iEu 1 Dy emitting in blue at 490 nm and 365 nm.
- Pigments based on strontium aluminate are chosen because they have a remanence of the order of ten times greater than that of conventional pigments, both in duration and intensity. In addition, they can be used for outdoor applications. The absorption and emission cycles are unlimited.
- the average size of the particles is important because the duration of the remanence is directly related to the size of the particles: they are the most bulky ones that emit the longest. However, a high particle size prevents homogeneous continuous extrusion of the filaments which are then brittle.
- the phosphorescent pigment is formed of particles whose median diameter D50 is between 50 ⁇ m and 100 ⁇ m, preferably between 60 ⁇ m and 80 ⁇ m.
- the median diameter D50 is the 50% reading on the curve, that is to say that the particles of the sample whose diameter is less than the D50 represent 50% of the mass of the sample.
- the polyamide base is translucent. It is not enough that the pigment is chemically compatible with the chosen polymer, which is the case here.
- the physical properties and in particular the transparency of the resin have a direct impact on the remanence of the device. In opaque materials, only pigments on the surface will be able to emit after excitation.
- the weight content of the polymer material in phosphorescent pigment is between 17% and 23%, and preferably between 19% and 21%.
- the incorporation rate of pigments in plastic parts can be up to 30%.
- a high loading rate has a direct impact on the performance of the final product, in particular on the elasticity of the filaments.
- a load rate of 25% or more poses problems of industrialization. Indeed, too frequent breaks occur during the draw preventing the production of these mono-filaments in series.
- a low charge rate (of the order of 15% for example) leads to a too low remanence, even for large particles.
- the filaments have a diameter of between 0.5 mm and 0.6 mm, preferably about 0.55 mm.
- a diameter of 0.55 is ideal because it allows to fix a large amount of mono-filaments in each device, thereby improving the remanence properties and the visibility of the marking device in the dark.
- the manufacture of the device according to the invention is carried out by assembling the rigid body with previously obtained filaments, said assembly being able to be performed by one of the methods known to those skilled in the art.
- Obtaining the filaments with the appropriate physicochemical properties is more delicate, because it is necessary to reconcile conflicting requirements, as previously explained. Therefore, it is also an object of the invention a method of manufacturing by extrusion of phosphorescent polymeric filaments for a ground marking device according to the invention, said method essentially comprising the following steps:
- the conditions of implementation of the process are particularly chosen to obtain a continuous, elastic and non-brittle yarn, despite the presence of large particles in the polymer matrix.
- the use of a screw die usually used for the extrusion of polyethylene, which is shorter than the extrusion die of the other polymers and in particular polyamide, makes it possible to discharge the melt without stagnation of material in a continuous wire, without calcined zones are formed and cause harmful embrittlement at the origin of the rupture of the filaments.
- the phosphorescent pigment is introduced into the extruder at a weight content of between 17% and 23%, and preferably between 19% and 21%, relative to the amount of total of polymeric material.
- the pigment is formed of particles whose median diameter D50 is between 50 microns and 100 microns. In a particularly preferred manner, the median diameter is between 60 ⁇ m and 80 ⁇ m.
- the extrusion temperature is between 155 ° C. and 175 ° C.
- the extrusion is thus performed at a temperature below the commonly used temperatures, which allows in combination with a short-head die, to obtain an extrusion of the homogeneous and continuous mixture.
- the filaments being intended to be implanted on the ground, it is necessary that after crushing, they return to their initial position. It has been found that a high draw ratio allowed to have a correct elasticity of the filaments. Therefore, according to an interesting feature of the process according to the invention the filaments are stretched to 3.5%.
- the device can be installed by depression, at regular intervals or adapted to the needs, for a visible marking by the users, for example along a path, or to the limits of the places of a parking lot or a campsite . Its placement and removal are particularly simple, easy and fast and do not involve any earthwork that could damage the ground cover, including a lawn.
- the device can thus be used for permanent marking as temporary. If the ground is grassed and must be maintained, the device does not hinder the passage of a mower that cuts the strands at the same level as the grass. It remains visible at any time of day and night.
- the shape, the dimensions of the body as well as the number, the implantation, the dimensions of the filaments, their method of attachment to the body can vary widely without departing from the scope of the invention.
- Fig.1 is a schematic view of a device according to the invention having its general structure.
- the lower part of the device or body is conical and provided with a thread facilitating its penetration into a soil, even compact.
- the upper face of the body may conveniently comprise recesses capable of cooperating with a suitable tool allowing the introduction by screwing the body into the ground, and possibly also its withdrawal. Once in place, the upper face of the body is substantially level with the ground surface.
- Bundles of filaments are attached in one or more tufts to the body to which they are anchored by any suitable means.
- the diameter of the body is of the order of a few centimeters for a length of about ten centimeters.
- the body generally has 5 to 10 tufts of filaments, each consisting of 15 to 30 phosphorescent filaments.
- the filaments are made of a polymeric material comprising a polyamide base and a phosphorescent pigment.
- the base chosen is a RILSAN® PA11 polyamide, manufactured by Arkema under the reference "Besno P40 TL”.
- the phosphorescent pigment is here strontium aluminate SrAl 2 O 2 Eu 1 Dy having a green-yellow emission color (commercially available, under the reference GT 5700 Glotech). Is it this one?
- This pigment has a particle size D50 of 65-75 ⁇ m. It is mixed with 20% in the PA11 polyamide base and introduced into the feed hopper of an extruder equipped with a PE screw-type head, square-fitting with a 6-outlet die with a thread, for vertical extrusion. The temperature is set between 160 0 C and 170 0 C. The melt is cooled in a cooling tank and stretched on draw rolls at a rate of 3.5% for good elasticity. The monofilament obtained has a diameter of 0.55 mm. It is then cut into segments, for example 1, 20 m long, which are collected in bundles of 4.5 cm in diameter. The filaments must be gathered without being twisted while remaining perfectly rectilinear, which is made possible by the composition and the mode of operation chosen.
- the marking device also has the following properties: The remanence is at least (100 mcd / m 2 after 60 min?) And persists after 10 hours (??). The device is still visible after 10 hours of darkness. ARE THERE MEASURES? IN WHAT CONDITIONS ? WHAT RESULTS?
- the filaments have undergone aging tests according to ASTM D 2565 which simulates external conditions (illumination of 0.5 W / m 2 at 340 nm, 63 ° C, dry cycle / watering 102/18 mm, HR 50%) . These tests were carried out for a period of 1000 hours. In parallel with these tests and for comparison, tensile tests were carried out on the unfilled filaments and on the phosphorescent pigment-filled filaments, before and after aging. 497 hours and 1,000 hours of aging), by the Mount Plastic Application Laboratory (Total Petrochemicals) The detailed results are shown in Table 1.
- the tensile test shows that only the stress at break decreases gradually, the other parameters remaining stable, with standard deviations.
- the module remains stable, indicating that the unfilled filament does not degrade under the effect of aging.
- the tensile values show very little evolution of stress and elongation at break, with standard deviations.
- the module gradually decreases with exposure, but to a small extent.
- the mechanical strength of the filaments remains of a good level, even after aging.
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Artificial Filaments (AREA)
- Treatment Of Fiber Materials (AREA)
- Road Signs Or Road Markings (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0610664A FR2909567B1 (fr) | 2006-12-07 | 2006-12-07 | Dispositif phosphorescent de marquage au sol. |
| PCT/EP2007/063382 WO2008068296A1 (fr) | 2006-12-07 | 2007-12-06 | Dispositif phosphorescent de marquage au sol |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2099538A1 true EP2099538A1 (fr) | 2009-09-16 |
| EP2099538B1 EP2099538B1 (fr) | 2014-02-12 |
Family
ID=38562940
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP07847870.8A Active EP2099538B1 (fr) | 2006-12-07 | 2007-12-06 | Dispositif phosphorescent de marquage au sol |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP2099538B1 (fr) |
| FR (1) | FR2909567B1 (fr) |
| WO (1) | WO2008068296A1 (fr) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101417552B (zh) * | 2007-10-24 | 2012-01-11 | 林正其 | 一种打码机的喷头接口 |
| US9563796B1 (en) | 2015-12-22 | 2017-02-07 | Phmphilippe Morisse Sal | Radio frequency and near field ID tags with enlarged coil antenna for use with synthetic grass markers |
| ES1312854Y (es) * | 2024-06-18 | 2025-04-30 | Cardenas Francisco Garcia | Elemento de vegetacion artificial luminiscente |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2618345A1 (fr) * | 1987-07-21 | 1989-01-27 | Ceralit Sarl | Procede de tracage des lignes des surfaces de jeux de plein air et materiau pour la mise en oeuvre du procede |
| FR2711926B1 (fr) * | 1993-11-02 | 1996-01-26 | Morisse Philippe | Implant d'herbe synthétique pour la signalisation. |
| US5674437A (en) * | 1996-02-28 | 1997-10-07 | Glotex Corporation | Method of providing luminescence to fibrous materials |
| JP2002294622A (ja) * | 2001-03-30 | 2002-10-09 | Toray Ind Inc | 発光人工芝およびその製造方法 |
| JP4820019B2 (ja) * | 2001-06-01 | 2011-11-24 | ダイヤテックス株式会社 | 蛍光発光性長尺体、標識体及び人工芝状体 |
-
2006
- 2006-12-07 FR FR0610664A patent/FR2909567B1/fr not_active Expired - Fee Related
-
2007
- 2007-12-06 WO PCT/EP2007/063382 patent/WO2008068296A1/fr not_active Ceased
- 2007-12-06 EP EP07847870.8A patent/EP2099538B1/fr active Active
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2008068296A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2909567B1 (fr) | 2009-06-12 |
| EP2099538B1 (fr) | 2014-02-12 |
| FR2909567A1 (fr) | 2008-06-13 |
| WO2008068296A9 (fr) | 2009-03-05 |
| WO2008068296A1 (fr) | 2008-06-12 |
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