EP0337462A2 - Prefabricated horizontal road marking tape reflectorized by associated reflectors - Google Patents

Prefabricated horizontal road marking tape reflectorized by associated reflectors Download PDF

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Publication number
EP0337462A2
EP0337462A2 EP89106638A EP89106638A EP0337462A2 EP 0337462 A2 EP0337462 A2 EP 0337462A2 EP 89106638 A EP89106638 A EP 89106638A EP 89106638 A EP89106638 A EP 89106638A EP 0337462 A2 EP0337462 A2 EP 0337462A2
Authority
EP
European Patent Office
Prior art keywords
platelets
road marking
retroreflecting
horizontal road
reflectorized
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.)
Ceased
Application number
EP89106638A
Other languages
German (de)
French (fr)
Other versions
EP0337462A3 (en
Inventor
Ludwig Eigenmann
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.)
3M Co
Original Assignee
Minnesota Mining and Manufacturing Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Minnesota Mining and Manufacturing Co filed Critical Minnesota Mining and Manufacturing Co
Publication of EP0337462A2 publication Critical patent/EP0337462A2/en
Publication of EP0337462A3 publication Critical patent/EP0337462A3/en
Ceased legal-status Critical Current

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Classifications

    • 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
    • E01F9/576—Traffic lines
    • E01F9/578—Traffic lines consisting of preformed elements, e.g. tapes, block-type elements specially designed or arranged to make up a traffic line
    • 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
    • E01F9/524—Reflecting elements specially adapted for incorporation in or application to road surface markings
    • 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
    • E01F9/553—Low discrete bodies, e.g. marking blocks, studs or flexible vehicle-striking members
    • 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
    • E01F9/60—Upright bodies, e.g. marker posts or bollards; Supports for road signs
    • E01F9/604—Upright bodies, e.g. marker posts or bollards; Supports for road signs specially adapted for particular signalling purposes, e.g. for indicating curves, road works or pedestrian crossings
    • E01F9/619—Upright bodies, e.g. marker posts or bollards; Supports for road signs specially adapted for particular signalling purposes, e.g. for indicating curves, road works or pedestrian crossings with reflectors; with means for keeping reflectors clean

Definitions

  • the Applicant has developed retroreflective catadioptric ele­ments ('catadioptrics') that are visible at a distance and are incorporated in the prefabricated tape. These elements are co­veredby US Patent No. 4,129,397.
  • the object of the present invention is an important improvement in the field of said catadioptrics, with the purpose to assure visibility at a distance over the full service life of both the tape and the road surface.
  • the present invention is based on the acknowledgement that catadioptrics designed in accordance with the present state of the art, when practically positioned vertically, are within a relatively short time gathering too much dirt from the road surface, and that also an inclination of 30 is not solving this problem of dirt, because said catadioptrics do not vibrate sufficiently under the action of the traffic; in accordance with the present invention it has been found that only the vibration effect ensures the cleanness of the surface and consequently a continuous optical effect.
  • the catadioptric is filled with high density foamed polymer, which will be described in detail later.
  • Said foamed material has closed cells resisting to the action of the water.
  • the tape which is the object of the present invention is manufactured as a integrated whole, together with the applied catadioptrics, so that it may be stored ready for the laying down on the road.
  • numeral (2) shows a mould, made for example of metha­crylic resin modified with copolymer elastomer; numeral (4) shows a foamed inside body which will be inserted into the mould, an example of composition of which will be specified later; nu­meral (6) shows a wear resistant surface film (antiscratch film) of which too an example of composition will be specified later; numeral (8) shows a retroreflecting platelet, for example the Tesalux 4635/4636 sheet, manufactured by the firm Bayersdorf of Hamburg, or the prismatic plaque manufactured by Sacex, an ita­lian firm; numeral (10) shows an adhesive film for sticking the platelet (8) to the foamed inside body (4).
  • the shoulders (12) of the mould (2) protect the retroreflecting platelets (8) from the external aggression of the traffic.
  • the assembled catadioptric (14) is represented applied to the road marking tape (16), which may be, for example, the antiskid and wear- and stressresisting tape described in Appli­cant's Patent No. 4,146,635 (Re-issue No. 31,669).
  • FIG. 3 a cross-section following III-III of FIG. 2 is shown.
  • composition of the foamed inside body (4) and of the antiscratch film (6) are examples.
  • EXAMPLE A Foamed inside body Polyether glendion (produced by ARCO POLYMER) 100 p. Butanediol 8 p. Water 0.3 p. Dabco (produced by AIR PRODUCT) 0.8 p. Tin octoate 0.02 p. Silicone (produced by DOW CHEMICAL) 0.7 p. Isonate (produced by DOW CHEMICAL) 42.75 p. followed by a heating phase
  • EXAMPLE B Wear resistant surface film - antiscratch film Diester 4184 (produced by the facility COIN) 64.5 p. Diester G 680 (produced as above) 34 p. Xylene 19 p. Plaster P 42 ( adipic plastifier produced by COIN) 5 p. Titanium dioxide 137 p. followed by a heating phase

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Road Signs Or Road Markings (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)

Abstract

Prefabricated tape for horizontal road marking, located on the road surface, to which catadioptrics are applied, which consist of a mould (2) with protecting shoulders (12), of a foam body (4) inside of the mould, of retroreflecting platelets (8), of an antiwear film (6) protecting said platelets, in order to achieve a vibrating ef­fect ensuring the cleanness of the retroreflecting platelets (8).

Description

  • The Applicant has for many years concerned himself with the pro­plem of horizontal road marking tapes for promoting driving safety. He is now completing the research by concentrating all his efforts in the prefabricated horzontal marking tapes sector, being convinced that in a relatively near future the vital role played by horizontal marking tapes, in prarticular as regards road safety, will become universally recognized as being indis­pensable.
  • The Applicant has developed retroreflective catadioptric ele­ments ('catadioptrics') that are visible at a distance and are incorporated in the prefabricated tape. These elements are co­veredby US Patent No. 4,129,397.
  • The object of the present invention is an important improvement in the field of said catadioptrics, with the purpose to assure visibility at a distance over the full service life of both the tape and the road surface.
  • The present invention is based on the acknowledgement that catadioptrics designed in accordance with the present state of the art, when practically positioned vertically, are within a relatively short time gathering too much dirt from the road surface, and that also an inclination of 30 is not solving this problem of dirt, because said catadioptrics do not vibrate sufficiently under the action of the traffic; in accordance with the present invention it has been found that only the vibration effect ensures the cleanness of the surface and consequently a continuous optical effect.
  • To this purpose, in accordance with the present invention the catadioptric is filled with high density foamed polymer, which will be described in detail later. Said foamed material has closed cells resisting to the action of the water.
  • It must be put in evidence that the tape which is the object of the present invention is manufactured as a integrated whole, together with the applied catadioptrics, so that it may be stored ready for the laying down on the road.
    • FIG. 1 shows an exploded view of the catadioptric following the present invention.
    • FIG. 2 shows the catadioptric applied to the road marking tape.
    • FIG. 3 shows a cross-section of the catadioptric.
  • More in detail:
    In FIG. 1, numeral (2) shows a mould, made for example of metha­crylic resin modified with copolymer elastomer; numeral (4) shows a foamed inside body which will be inserted into the mould, an example of composition of which will be specified later; nu­meral (6) shows a wear resistant surface film (antiscratch film) of which too an example of composition will be specified later; numeral (8) shows a retroreflecting platelet, for example the Tesalux 4635/4636 sheet, manufactured by the firm Bayersdorf of Hamburg, or the prismatic plaque manufactured by Sacex, an ita­lian firm; numeral (10) shows an adhesive film for sticking the platelet (8) to the foamed inside body (4).
    The shoulders (12) of the mould (2) protect the retroreflecting platelets (8) from the external aggression of the traffic.
  • In FIG. 2 the assembled catadioptric (14) is represented applied to the road marking tape (16), which may be, for example, the antiskid and wear- and stressresisting tape described in Appli­cant's Patent No. 4,146,635 (Re-issue No. 31,669).
  • In FIG. 3 a cross-section following III-III of FIG. 2 is shown.
  • The following are examples of composition of the foamed inside body (4) and of the antiscratch film (6).
    EXAMPLE A - Foamed inside body
    Polyether glendion (produced by ARCO POLYMER) 100 p.
    Butanediol 8 p.
    Water 0.3 p.
    Dabco (produced by AIR PRODUCT) 0.8 p.
    Tin octoate 0.02 p.
    Silicone (produced by DOW CHEMICAL) 0.7 p.
    Isonate (produced by DOW CHEMICAL) 42.75 p.
    followed by a heating phase
    EXAMPLE B - Wear resistant surface film - antiscratch film
    Diester 4184 (produced by the italian firm COIN) 64.5 p.
    Diester G 680 (produced as above) 34 p.
    Xylene 19 p.
    Plaster P 42 ( adipic plastifier produced by COIN) 5 p.
    Titanium dioxide 137 p.
    followed by a heating phase

Claims (2)

1.- A prefabricated multilayer tape (16) for horizontal road marking which is located on the road surface, characterized by having at its upper part an antiwear polyurethane film holding a moulded catadioptric (14,2), which is characterized by shoulders (12) protecting the retroreflecting platelets (8) from external aggression, by an inside body (4) of high density foamed poly­mer, and by said retroreflecting platelets (8) sticked on said foamed body (4) and coated by an antiwear film (6) whereby said retroreflecting platelets are vibrating under the aggression of the traffic and ensure the cleanliness of the optical surface.
2.- A prefabricated multilayer tape for horizontal road marking according to claim 1, characterized by the fact that the foamed material has closed cells resisting to the ac­tion of water.
EP89106638A 1988-04-15 1989-04-13 Prefabricated horizontal road marking tape reflectorized by associated reflectors Ceased EP0337462A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH1389/88A CH674385A5 (en) 1988-04-15 1988-04-15
CH1389/88 1988-04-15

Publications (2)

Publication Number Publication Date
EP0337462A2 true EP0337462A2 (en) 1989-10-18
EP0337462A3 EP0337462A3 (en) 1989-11-29

Family

ID=4209286

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89106638A Ceased EP0337462A3 (en) 1988-04-15 1989-04-13 Prefabricated horizontal road marking tape reflectorized by associated reflectors

Country Status (3)

Country Link
EP (1) EP0337462A3 (en)
JP (1) JPH01312110A (en)
CH (1) CH674385A5 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9107263U1 (en) * 1991-06-12 1991-09-12 Junker, Wilhelm, 7150 Backnang Guidance system

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1784201A1 (en) * 1967-07-21 1971-07-29 Ameriace Esna Corp Road marking
US4129397A (en) * 1976-11-10 1978-12-12 Ludwig Eigenmann Road surface marking prefabricated tape material, having retroreflective composite elements associated thereto
US4146635A (en) * 1976-04-15 1979-03-27 Ludwig Eigenmann Anti-skid, wear- and stress-resisting road marking tape material
EP0125360A1 (en) * 1981-11-03 1984-11-21 Inoventors Limited Reflective road studs
EP0125785A1 (en) * 1983-04-11 1984-11-21 Minnesota Mining And Manufacturing Company Elastomeric pavement marker

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1784201A1 (en) * 1967-07-21 1971-07-29 Ameriace Esna Corp Road marking
US4146635A (en) * 1976-04-15 1979-03-27 Ludwig Eigenmann Anti-skid, wear- and stress-resisting road marking tape material
US4129397A (en) * 1976-11-10 1978-12-12 Ludwig Eigenmann Road surface marking prefabricated tape material, having retroreflective composite elements associated thereto
EP0125360A1 (en) * 1981-11-03 1984-11-21 Inoventors Limited Reflective road studs
EP0125785A1 (en) * 1983-04-11 1984-11-21 Minnesota Mining And Manufacturing Company Elastomeric pavement marker

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9107263U1 (en) * 1991-06-12 1991-09-12 Junker, Wilhelm, 7150 Backnang Guidance system

Also Published As

Publication number Publication date
EP0337462A3 (en) 1989-11-29
CH674385A5 (en) 1990-05-31
JPH01312110A (en) 1989-12-15

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