US20110049756A1 - Escape Route Marking for an Aircraft and Method for Producing an Escape Route Marking - Google Patents

Escape Route Marking for an Aircraft and Method for Producing an Escape Route Marking Download PDF

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Publication number
US20110049756A1
US20110049756A1 US12/919,518 US91951809A US2011049756A1 US 20110049756 A1 US20110049756 A1 US 20110049756A1 US 91951809 A US91951809 A US 91951809A US 2011049756 A1 US2011049756 A1 US 2011049756A1
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United States
Prior art keywords
escape route
route marking
silicone
photoluminescent pigments
carrier material
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.)
Abandoned
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US12/919,518
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English (en)
Inventor
Wolfgang Sutter
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Lufthansa Technik AG
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Lufthansa Technik AG
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Filing date
Publication date
Application filed by Lufthansa Technik AG filed Critical Lufthansa Technik AG
Assigned to LUFTHANSA TECHNIK AG reassignment LUFTHANSA TECHNIK AG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: SUTTER, WOLFGANG
Publication of US20110049756A1 publication Critical patent/US20110049756A1/en
Abandoned legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K2/00—Non-electric light sources using luminescence; Light sources using electrochemiluminescence
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
    • C09K11/02—Use of particular materials as binders, particle coatings or suspension media therefor
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
    • C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00—Illuminated signs; Luminous advertising
    • G09F13/20—Illuminated signs; Luminous advertising with luminescent surfaces or parts
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F19/00—Advertising or display means not otherwise provided for
    • G09F19/22—Advertising or display means on roads, walls or similar surfaces, e.g. illuminated

Definitions

  • the present invention relates to an escape route marking for an aircraft comprising photoluminescent pigments in a carrier material.
  • the invention also relates to a method for producing an escape route marking for an aircraft.
  • photoluminescent strips on the floor of the aircraft interior for marking escape routes in aircraft. Photoluminescence is occasionally also denoted as afterglow and/or phosphorescence. The safety requirements are specified, for example, in the German Industry Standard DIN 67510. The strips are laid on the floor of the aircraft cabin and indicate to the passengers and the crew in the event of an emergency the route to the exits and escape hatches. In the past, photoluminescent strips have increasingly become accepted as escape route marking when fitting-out aircraft and aircraft cabins, as said strips are reliable and may be operated without a power supply.
  • a permanently fluorescent layer is known from EP 0 489 561 A1, in which colour pigments are incorporated into a polymer matrix.
  • the fluorescent material may be incorporated into a carrier which imparts different optical properties to the fluorescent light by additional filters.
  • An emergency lighting system for an aircraft is known from US 2002/015309 A1, in which photoluminescent material is arranged in a casing.
  • the casing is held in a press fit engagement between two rails extending parallel to one another on the floor of the aircraft.
  • a photoluminescent material is known from U.S. Pat. No. 7,074,345 B2 which consists of a cured blend of a transparent base material and photoluminescent pigments.
  • the viscosity of the base material is 1 Pa ⁇ s at 20° C.
  • the photoluminescent pigments are added to the base material in a quantity of 7 to 95% by weight.
  • a series of materials are proposed for the transparent base material.
  • resins it is proposed to use methyl methacrylate (MMA), PMMA, modified PMMA, unsaturated polyester resins, epoxy resins and silicone resins.
  • olefin resins such as for example polycarbonate resins and polypropylene resins could also be used.
  • the disclosed photoluminescent material consists of a mixture of photoluminescent pigments which are mixed with further pigments.
  • the further pigments have a mean particle size of 0.1 to 70 ⁇ m whilst the photoluminescent pigments have a mean particle size of 150 to 2000 ⁇ m.
  • the technical object of the invention is to provide an escape route marking for an aircraft which may be provided with as little production cost as possible, the photoluminescent pigments thereof having a sufficient luminosity and at the same time being protected sufficiently against moisture and mechanical damage.
  • the escape route marking according to the invention for an aircraft has photoluminescent pigments incorporated in a carrier material, which luminesce in the dark.
  • the carrier material is a silicone, which has photoluminescent pigments of a mean particle size of less than 150 ⁇ m.
  • the escape route marking according to the invention is characterised by embedding photoluminescent pigments of a relatively small mean particle size into a silicone material.
  • the invention is based on the recognition that the photoluminescent pigments are not damaged by the precipitated products of the silicones, such as for example acetic acid, and that the photoluminescent pigments are protected exceptionally well from outside by the cured silicone against liquid media. A separate encapsulation or other treatment of the photoluminescent pigments is not required for the silicone matrix so that this additional operation is dispensed with.
  • the mean particle size of the photoluminescent pigments is less than 120 ⁇ m and particularly preferably less than 100 ⁇ m.
  • the silicone has a viscosity of 1 ⁇ 10 4 mPa ⁇ s or less, in particular less than 900 mPa ⁇ s (20° C.).
  • the inventor has recognised that the viscosity of the silicone is important for the ability of the pigments to be incorporated and for easier processing of the silicone-pigment mixture.
  • silicones of low viscosity permits particularly effective incorporation of the photoluminescent pigments and thus ensures that even in the cured silicone the pigments are uniformly distributed in the silicone matrix.
  • the carrier material is configured to be transparent or translucent.
  • the silicones used as carrier material may be present both as single-component silicones and as multi-component silicones. They are preferably configured to be transparent. If the escape route marking is intended to luminesce in a different colour from that predetermined by the photoluminescent pigments, the carrier material may be coloured in a colour which is different from the colour of the photoluminescent pigments. As a result, there is the possibility of allowing the escape route marking to luminesce in a desired colour.
  • the photoluminescent pigments comprise strontium aluminate.
  • strontium aluminate is, in particular, well-suited for use as escape route marking in aircraft, as these pigments have a sufficient brightness and sufficiently long persistence.
  • the weight component of the photoluminescent pigments is more than 35, preferably 60 to 70% by weight, of the blend consisting of silicone and pigments.
  • the escape route marking exclusively has photoluminescent pigments which are distributed in the matrix of the cured carrier material.
  • the method according to the invention is used for producing an escape route marking for an aircraft, in which photoluminescent pigments are embedded in a carrier material.
  • the photoluminescent pigments have a mean particle size of less than 150 ⁇ m and are incorporated therein before processing the carrier material.
  • silicone is provided as a carrier material.
  • the production method is characterised by the particularly simple step that the photoluminescent pigments, relative to otherwise conventional photoluminescent pigments with a small mean particle size, are incorporated into a silicone as carrier material. Costly method steps which protect the pigments for the arrangement in the matrix of the carrier material may be dispensed with.
  • the relatively small mean particle size also makes it possible for the photoluminescent pigments to be able to be easily mixed with the silicone which is not yet cured.
  • the photoluminescent pigments have a mean particle size of less than 120 ⁇ m and particularly preferably of less than 100 ⁇ m.
  • the mixture of silicone and photoluminescent pigments is capable of being cast after mixing.
  • the escape route marking may be cast, the escape route marking being cast with a thickness of 0.25 mm to 5 mm, preferably 0.15 mm to 7 mm.
  • the silicone-pigment mixture which is capable of being cast may, for example, also be applied directly at the point of application using spray guns.
  • the escape route marking may be extruded from the mixture of photoluminescent pigments and silicone.
  • the extruded strand may be spread with pigments or pigments may be rolled into said extruded strand.
  • the extruded strand is additionally provided with photoluminescent pigments.
  • the mixture of silicone and photoluminescent pigments is bonded, during or after curing, to a plastics layer.
  • the plastics layer may be provided as a cover for the escape route marking or may be configured as a substrate for said escape route marking.
  • thermoplastics such as polycarbonate, polyethylene, polyamide, ABS or other or other thermosetting plastics, such as epoxy resins, polyester resins or acrylates may be used, for example, as material for the plastics layer.
  • the mixture of silicone and photoluminescent pigments is further processed by casting, there is the possibility of a plastics strip being inserted into a casting mould, before said casting mould is loaded with the mixture.
  • the plastics strip may, in this case, previously be subjected to a surface treatment, in order to ensure an improved bond of the silicone with the plastics strip.
  • both the escape route marking may be produced with the photoluminescent material and the bonding of the silicone may be achieved with a plastics strip.
  • plastics layer is used as step protection or general protection of the surface of the photoluminescent component from mechanical load
  • said plastics layer is preferably coloured and transparent or translucent.
  • Thermoplastics are particularly well suited to this due to their capacity for extrusion and high degree of toughness. It has proved particularly advantageous in the aviation industry to use polycarbonate, as this is available as a highly transparent material and has excellent properties regarding the fire protection standards which are applicable in the aviation field.
  • the cured silicone-pigment mixture with a transparent or translucent coloured plastics layer may be completely or partially encased by casting or injection-moulding, as a further processing option.
  • curved and/or arcuate components may be easily produced with surface protection from mechanical load.
  • Thermoplastics are again suitable for this, primarily for the injection-moulding method, and thermosetting plastics primarily for the casting.
  • FIG. 1 shows a strip extended in an elongate manner for the escape route marking
  • FIG. 2 shows an elongate strip for the escape route marking which is provided with a transparent plastics layer
  • FIG. 3 shows an elongate strip for the escape route marking which is arranged in an enclosed, one-piece casing
  • FIG. 4 shows an elongate strip for the escape route marking which is arranged in a two-piece casing
  • FIG. 5 shows an elongate strip for the escape route marking in cross section, which is arranged in a semi-open plastics profile
  • FIG. 6 shows an elongate strip for the escape route marking which is arranged in a two-piece casing
  • FIG. 7 shows an elongate strip for the escape route marking in cross section which is protected by a cover
  • FIG. 8 shows in a schematic view a mould for the casting process of a planar strip for the escape route marking
  • FIG. 9 shows the mould of FIG. 8 during the curing process
  • FIG. 10 shows an elongate strip for the escape route marking which is embedded in a completely enclosed casing
  • FIG. 11 shows a comparative measurement for an escape route marking according to the invention with a conventional escape route marking
  • FIG. 12 shows the relative increase in afterglow density in the comparative measurement of FIG. 11 .
  • FIG. 1 shows an elongate strip 1 made of luminescent material which consists of photoluminescent pigments P, which are embedded in a cured silicone matrix.
  • the detailed view of FIG. 1 shows individual photoluminescent pigments P which are embedded in the silicone matrix S.
  • curved embodiments of the escape route marking may also be produced, in particular by means of casting or injection-moulding.
  • FIG. 2 shows a luminescent strip 1 , as also shown in FIG. 1 , which is fastened to a one-piece cover strip 2 made of plastics material for protection against mechanical loads.
  • the cover strip is configured to be transparent or partially coloured.
  • the carrier material is either bonded to the cover or produced together with said cover, as is explained further below.
  • FIG. 3 shows a luminescent strip 1 which is inserted into a one-piece casing 3 which is not completely enclosed, for protection against mechanical load.
  • the casing 3 may be transparent or partially coloured.
  • an adhesive layer 4 is provided on the underside, with which the escape route marking may be bonded, for example, to the floor of the aircraft cabin.
  • FIG. 4 shows an escape route marking in a two-piece casing 5 , 7 , the parts thereof encompassing one another on their outer edge.
  • a reflective layer 6 is provided which reflects the incident light of the photoluminescent pigments, and thus increases the quantity of light emerging from the cover 7 .
  • FIG. 5 shows a luminescent strip 1 which is provided with a cover 2 .
  • the strip 1 is received in a trough-shaped plastics profile 8 , the strip being able to be bonded or simply inserted in the plastics profile 8 .
  • the plastics profile 8 has on its underside an adhesive layer 9 , with which it may be bonded in the aircraft cabin.
  • the profile 8 also has on its underside projections 10 extending in the longitudinal direction which serve for saving weight and receiving terminating elements which may be affixed for the top and bottom end.
  • FIG. 6 shows a luminescent strip 1 which is arranged in a plastics profile 13 .
  • the plastics profile 13 is additionally covered by a transparent plastics cover 12 , in order to protect the strip 1 in this manner from mechanical damage and, if required, to be able to hold a colour filter film.
  • the strip 1 shown in FIG. 2 may be arranged with the cover strip 2 in the plastics profile 13 .
  • FIG. 7 shows an embodiment in which the strip 1 is arranged in an upwardly open profile 14 , the cover 15 thereof having wings 16 protruding on both sides, which project in their width over the profile 14 .
  • the wings 16 make it possible to attach the escape route marking in an improved manner to adjacent floor coverings.
  • FIGS. 8 and 9 show in a schematic view the production of a luminescent strip for the escape route marking as shown in FIG. 2 .
  • FIG. 8 shows schematically a mould 21 into which the transparent plastics strip 20 is already inserted. The silicone-pigment mixture is cast into the recess of the lower casting mould 21 . In a subsequent step, for the curing process, the mould is rotated so that the cover 2 is no longer located at the bottom but at the top. As a result, during the curing a separation of the pigments and silicone is achieved which leads to an improvement of the luminosity.
  • the mould 21 may be opened and the cured strip removed with its cover 2 .
  • FIG. 10 shows an embodiment of an illuminated strip of the same geometry as shown in FIG. 5 , in which the cured silicone-pigment mixture 1 is embedded in a one-piece, completely enclosed casing 24 .
  • the casing may be produced in an injection-moulding or casting method and may also be designed to be partially open, for example to be able to provide support around the strip 1 during the casting.
  • FIGS. 11 and 12 show the afterglow density of the escape route marking according to the invention in comparison with a conventional escape route marking.
  • an escape route marking has been used of which the silicone-pigment mixture has a pigment component of 70% by weight, and which is cast onto a transparent polycarbobatfolie film pretreated with a primer.
  • said escape route marking is compared with a conventional escape route marking, the thickness thereof also being 1.2 mm.
  • the afterglow density is plotted in mcd/m 2 over the time in minutes.
  • the measurement of the escape route marking according to the invention is thus shown by squares whilst the afterglow density of the conventional component is shown by rhombuses.
  • FIG. 12 illustrates once again the improvement of the escape route marking according to the invention by representing the relative improvement of the afterglow density. It may be clearly seen in the diagram of FIG. 12 that the afterglow density is always better by at least 15% than in the conventional escape route marking. In the particularly relevant time interval of 200-600 minutes the afterglow density is actually at least 20% better.
  • the silicone-pigment mixture is applied through a nozzle and thus may be applied into a joint or onto a curved or angular region.
  • the silicone-pigment mixture is applied through a nozzle and thus may be applied into a joint or onto a curved or angular region.
  • a luminescent strip is produced in the casting method with a highly-transparent two-component silicone.
  • the silicone has a viscosity of approximately 800 m Pa ⁇ s at 20° C. before admixing the photoluminescent pigments.
  • the pigments are again based on strontium aluminate and have a mean particle size of approximately 50 ⁇ m.
  • the weight component of the pigments in the finished silicone-pigment mixture is approximately 60% by weight.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Marketing (AREA)
  • Accounting & Taxation (AREA)
  • Electromagnetism (AREA)
  • Business, Economics & Management (AREA)
  • Inorganic Chemistry (AREA)
  • Road Signs Or Road Markings (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)
  • Paints Or Removers (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Table Devices Or Equipment (AREA)
  • Road Repair (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Emergency Lowering Means (AREA)
  • Luminescent Compositions (AREA)
US12/919,518 2008-02-27 2009-02-27 Escape Route Marking for an Aircraft and Method for Producing an Escape Route Marking Abandoned US20110049756A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102008011405.7 2008-02-27
DE102008011405A DE102008011405A1 (de) 2008-02-27 2008-02-27 Fluchtwegmarkierung für ein Fahrzeug sowie Verfahren zur Herstellung einer Fluchtwegmarkierung
PCT/EP2009/001416 WO2009106342A1 (de) 2008-02-27 2009-02-27 Fluchtwegmarkierung für ein flugzeug sowie verfahren zur herstellung einer fluchtwegmarkierung

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2009/001416 A-371-Of-International WO2009106342A1 (de) 2008-02-27 2009-02-27 Fluchtwegmarkierung für ein flugzeug sowie verfahren zur herstellung einer fluchtwegmarkierung

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US13/334,421 Continuation US8852479B2 (en) 2008-02-27 2011-12-22 Escape route marking for an aircraft and method for producing an escape route marking

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US20110049756A1 true US20110049756A1 (en) 2011-03-03

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US12/919,518 Abandoned US20110049756A1 (en) 2008-02-27 2009-02-27 Escape Route Marking for an Aircraft and Method for Producing an Escape Route Marking
US13/334,421 Active 2029-03-06 US8852479B2 (en) 2008-02-27 2011-12-22 Escape route marking for an aircraft and method for producing an escape route marking

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Application Number Title Priority Date Filing Date
US13/334,421 Active 2029-03-06 US8852479B2 (en) 2008-02-27 2011-12-22 Escape route marking for an aircraft and method for producing an escape route marking

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US (2) US20110049756A1 (zh)
EP (1) EP2248124B1 (zh)
JP (1) JP2011513527A (zh)
CN (1) CN102027527B (zh)
AT (1) ATE521058T1 (zh)
BR (1) BRPI0908536B1 (zh)
CA (1) CA2717003C (zh)
DE (1) DE102008011405A1 (zh)
RU (1) RU2482549C2 (zh)
WO (1) WO2009106342A1 (zh)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2799287A1 (en) * 2013-03-28 2014-11-05 Saf-t-Glo Limited Emergency lighting
US20150252951A1 (en) * 2012-08-14 2015-09-10 Lufthansa Technik Ag Method for producing an escape route marking for airplanes, and said escape route marking
US9269284B2 (en) 2012-04-05 2016-02-23 Lufthansa Technik Ag Escape route marking with a luminous strip made of photoluminescent material
RU2624265C2 (ru) * 2012-09-05 2017-07-03 Мицубиси Хэви Индастриз, Лтд. Устройство освещения

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Publication number Priority date Publication date Assignee Title
DE102009040040B4 (de) * 2009-09-01 2012-04-19 Lufthansa Technik Ag Verfahren zur Herstellung einer Fluchtwegmarkierung
DE102009040042B4 (de) 2009-09-01 2013-08-29 Lufthansa Technik Ag Verfahren zur Herstellung einer Fluchtwegmarkierung sowie eine solche
DE102011010393B4 (de) * 2011-02-05 2013-09-19 Lufthansa Technik Ag Prüfverfahren für eine Fluchtwegmarkierung
SK6395Y1 (sk) * 2012-04-30 2013-03-01 Ladislav Kozmer A luminiscent materials
CN103232841A (zh) * 2013-04-08 2013-08-07 李智强 荧光浆及其使用方法
US9205932B2 (en) * 2013-05-01 2015-12-08 The Boeing Company Method and system for determination of performance and response to electromagnetic radiation
GB2527314A (en) * 2014-06-17 2015-12-23 Daniel Alan Rust Runner system
DE102014112686B3 (de) * 2014-09-03 2015-04-09 Lufthansa Technik Aktiengesellschaft Fluchtwegmarkierung für ein Flugzeug
WO2016126664A1 (en) 2015-02-02 2016-08-11 Blank Amber Michelle Illuminated nipple shield
CZ308334B6 (cs) * 2019-07-04 2020-05-20 EternaLight s.r.o. Způsob výroby fotoluminiscenčního prvku

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US20060016262A1 (en) * 2004-07-20 2006-01-26 Denso Corporation Obstacle detection system
US7074345B2 (en) * 2001-12-28 2006-07-11 Availvs Corporation Highly luminous light-emitting material and manufacturing method thereof

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US20020015309A1 (en) * 2000-07-25 2002-02-07 Stokes Peter David Emergency lighting
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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9269284B2 (en) 2012-04-05 2016-02-23 Lufthansa Technik Ag Escape route marking with a luminous strip made of photoluminescent material
US20150252951A1 (en) * 2012-08-14 2015-09-10 Lufthansa Technik Ag Method for producing an escape route marking for airplanes, and said escape route marking
US9702509B2 (en) * 2012-08-14 2017-07-11 Lufthansa Technik Ag Method for producing an escape route marking for airplanes, and said escape route marking
RU2624265C2 (ru) * 2012-09-05 2017-07-03 Мицубиси Хэви Индастриз, Лтд. Устройство освещения
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EP2799287A1 (en) * 2013-03-28 2014-11-05 Saf-t-Glo Limited Emergency lighting
US9702523B2 (en) 2013-03-28 2017-07-11 Saf-T-Glo Limited Emergency lighting

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CN102027527A (zh) 2011-04-20
US20120091607A1 (en) 2012-04-19
EP2248124A1 (de) 2010-11-10
BRPI0908536A2 (pt) 2015-09-29
RU2482549C2 (ru) 2013-05-20
US8852479B2 (en) 2014-10-07
DE102008011405A1 (de) 2009-09-10
JP2011513527A (ja) 2011-04-28
EP2248124B1 (de) 2011-08-17
ATE521058T1 (de) 2011-09-15
CN102027527B (zh) 2015-01-21
WO2009106342A1 (de) 2009-09-03
BRPI0908536B1 (pt) 2024-01-09
RU2010138198A (ru) 2012-04-10
CA2717003C (en) 2013-09-10
CA2717003A1 (en) 2009-09-03

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