CA2482255A1 - Method and apparatus for manufacturing a retroreflective device - Google Patents

Method and apparatus for manufacturing a retroreflective device Download PDF

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Publication number
CA2482255A1
CA2482255A1 CA002482255A CA2482255A CA2482255A1 CA 2482255 A1 CA2482255 A1 CA 2482255A1 CA 002482255 A CA002482255 A CA 002482255A CA 2482255 A CA2482255 A CA 2482255A CA 2482255 A1 CA2482255 A1 CA 2482255A1
Authority
CA
Canada
Prior art keywords
channels
manufacturing
glass beads
binder material
retroreflective device
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
Application number
CA002482255A
Other languages
French (fr)
Other versions
CA2482255C (en
Inventor
Ian I. Durant
Richard H. Hughes
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.)
Prismo Ltd
Original Assignee
Prismo Limited
Ian I. Durant
Richard H. Hughes
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 Prismo Limited, Ian I. Durant, Richard H. Hughes filed Critical Prismo Limited
Publication of CA2482255A1 publication Critical patent/CA2482255A1/en
Application granted granted Critical
Publication of CA2482255C publication Critical patent/CA2482255C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/12—Reflex reflectors
    • G02B5/126—Reflex reflectors including curved refracting surface
    • G02B5/128—Reflex reflectors including curved refracting surface transparent spheres being embedded in matrix
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/58—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising fillers only, e.g. particles, powder, beads, flakes, spheres
    • B29C70/585—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising fillers only, e.g. particles, powder, beads, flakes, spheres incorporation of light reflecting filler, e.g. lamellae to obtain pearlescent effet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D11/00—Producing optical elements, e.g. lenses or prisms
    • B29D11/00605—Production of reflex reflectors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D11/00—Producing optical elements, e.g. lenses or prisms
    • B29D11/00605—Production of reflex reflectors
    • B29D11/00615—Production of reflex reflectors moulded by partially embedding reflective elements, e.g. glass beads, into the surface of a support, e.g. to make prefabricated road markings

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Ophthalmology & Optometry (AREA)
  • Civil Engineering (AREA)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Road Signs Or Road Markings (AREA)

Abstract

The present application relates to a method and apparatus for manufacturing an agglomeration of glass beads consisting of a plurality of glass beads bound together by means of a binder material. An apparatus is described which includes a dispensing device (3a: 3b: 3c) having a plurality of channels (5) along which, in use, binder material flows. Each of the channels terminates in an outlet (B) and is in fluid communications with a single binder inlet (6). Importantly, the channels are of substantially identical length and diameter. One or more dispensing devices may be coupled to a single distribution unit (2)
CA002482255A 2003-06-11 2004-06-11 Method and apparatus for manufacturing a retroreflective device Expired - Fee Related CA2482255C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB0313514.2 2003-06-11
GB0313514A GB2402694B (en) 2003-06-11 2003-06-11 Method and apparatus for manufacturing a retroflective device
PCT/GB2004/002425 WO2004110733A1 (en) 2003-06-11 2004-06-09 Method and apparatus for manufacturing a retroreflective device

Publications (2)

Publication Number Publication Date
CA2482255A1 true CA2482255A1 (en) 2004-12-11
CA2482255C CA2482255C (en) 2009-02-24

Family

ID=27589904

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002482255A Expired - Fee Related CA2482255C (en) 2003-06-11 2004-06-11 Method and apparatus for manufacturing a retroreflective device

Country Status (4)

Country Link
EP (1) EP1631443A1 (en)
CA (1) CA2482255C (en)
GB (1) GB2402694B (en)
WO (1) WO2004110733A1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9207373B2 (en) 2007-04-10 2015-12-08 Stoncor Group, Inc. Methods for fabrication and highway marking usage of agglomerated retroreflective beads
US8292539B2 (en) * 2007-04-10 2012-10-23 Stoncor Group, Inc. Agglomerated retroreflective beads for highway marking and methods for fabrication and use thereof
GB2448490A (en) * 2007-04-16 2008-10-22 Prismo Road Markings Ltd Road marking device
US8840956B2 (en) 2008-10-31 2014-09-23 Potters Industries, Llc Retroreflective coating and method for applying a retroreflective coating on a structure
CA2730631C (en) 2010-02-09 2015-03-31 Potters Industries, Inc. Reflective substrate surface system, reflective assembly, and methods of improving the visibility of a substrate surface
EP3347319B1 (en) 2015-09-11 2020-10-28 3M Innovative Properties Company Durable retroreflective elements with a blend of beads
US11353640B2 (en) 2015-09-11 2022-06-07 3M Innovative Properties Company Durable retroreflective elements with an ionic copolymer core

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3043196A (en) 1957-09-18 1962-07-10 Minnesota Mining & Mfg Reflective marking aggregate
US3254563A (en) * 1963-11-12 1966-06-07 Prismo Safety Corp Retro-reflective particles and reflective markers and compositions containing such particles
CA1268016A (en) 1984-09-21 1990-04-24 Robert Dejaiffe Reflective particles and method of making the same
US4609587A (en) * 1984-11-30 1986-09-02 Potters Industries, Inc. Retroreflective materials and use
CH671986A5 (en) 1987-12-24 1989-10-13 Eigenmann Ludwig
DE19521847A1 (en) * 1995-06-16 1996-12-19 Gerhard Cammann Light reflective agglomerates for road markings, reflective structural blocks etc.
US5942280A (en) 1997-09-16 1999-08-24 3M Innovative Properties Company Method of making retroreflective elements
SE514449C2 (en) 1998-10-23 2001-02-26 Cleanosol Ab Surface coatings intended for use on markings for roads, parking spaces and the like

Also Published As

Publication number Publication date
EP1631443A1 (en) 2006-03-08
CA2482255C (en) 2009-02-24
GB2402694B (en) 2006-03-15
WO2004110733A1 (en) 2004-12-23
GB0313514D0 (en) 2003-07-16
GB2402694A (en) 2004-12-15

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MKLA Lapsed