WO2003011579A3 - A process for manufacturing reflector laminates - Google Patents

A process for manufacturing reflector laminates Download PDF

Info

Publication number
WO2003011579A3
WO2003011579A3 PCT/IT2002/000387 IT0200387W WO03011579A3 WO 2003011579 A3 WO2003011579 A3 WO 2003011579A3 IT 0200387 W IT0200387 W IT 0200387W WO 03011579 A3 WO03011579 A3 WO 03011579A3
Authority
WO
WIPO (PCT)
Prior art keywords
layer
microspheres
heat
film
cavities
Prior art date
Application number
PCT/IT2002/000387
Other languages
French (fr)
Other versions
WO2003011579A2 (en
Inventor
Giorgio Corradi
Original Assignee
Giorgio Corradi
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 Giorgio Corradi filed Critical Giorgio Corradi
Publication of WO2003011579A2 publication Critical patent/WO2003011579A2/en
Publication of WO2003011579A3 publication Critical patent/WO2003011579A3/en

Links

Classifications

    • 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
    • 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
    • B29C69/00—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore
    • 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
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B29C48/0011—Combinations of extrusion moulding with other shaping operations combined with compression moulding
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B29C48/0017—Combinations of extrusion moulding with other shaping operations combined with blow-moulding or thermoforming
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/07—Flat, e.g. panels
    • B29C48/08—Flat, e.g. panels flexible, e.g. films
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/13—Articles with a cross-section varying in the longitudinal direction, e.g. corrugated pipes
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
    • B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
    • B29C48/19—Articles comprising two or more components, e.g. co-extruded layers the components being layers the layers being joined at their edges
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
    • B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
    • B29C48/21—Articles comprising two or more components, e.g. co-extruded layers the components being layers the layers being joined at their surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2011/00—Optical elements, e.g. lenses, prisms
    • B29L2011/0083—Reflectors
    • B29L2011/0091—Reflex reflectors

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Ophthalmology & Optometry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Laminated Bodies (AREA)
  • Optical Elements Other Than Lenses (AREA)

Abstract

A reflective film (5) has a layer of microspheres (2) on one side and is heat-formed between two embossing cylinders (6). The embossing cylinders (6) peripherally exhibit two matrices which produce, on the side of the film (5) bearing the microspheres, a distribution of microscopic reliefs, and on the opposite side, corresponding cavities. A base layer (4) of material is applied to the side with the cavities, filling them. The heat-formed film comprises a first layer (31) of a transparent resin interpositioned between the microspheres (2) and a thin reflecting layer (32) containing metal, which in turn is covered by several layers (33 and 34) of protective material coupled to a layer (35) of heat-formable material. The reflector laminate is usefully applied in the field of horizontal road signals.
PCT/IT2002/000387 2001-07-27 2002-06-12 A process for manufacturing reflector laminates WO2003011579A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMO2001A000157 2001-07-27
IT2001MO000157A ITMO20010157A1 (en) 2001-07-27 2001-07-27 METHOD FOR THE MANUFACTURE OF A REFLECTIVE LAMINATE

Publications (2)

Publication Number Publication Date
WO2003011579A2 WO2003011579A2 (en) 2003-02-13
WO2003011579A3 true WO2003011579A3 (en) 2004-03-04

Family

ID=11450843

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IT2002/000387 WO2003011579A2 (en) 2001-07-27 2002-06-12 A process for manufacturing reflector laminates

Country Status (2)

Country Link
IT (1) ITMO20010157A1 (en)
WO (1) WO2003011579A2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106029363B (en) 2014-02-13 2018-01-16 3M创新有限公司 Dual cure resistant microsphere product
CN110609342A (en) * 2018-06-16 2019-12-24 上海清研新材料科技有限公司 Automobile reflective tire and preparation method thereof
CN112935040B (en) * 2021-01-28 2023-05-16 佛山科学技术学院 Forming mechanism, mold core and hot pressing device for composite micro-nano lens array

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5069964A (en) * 1989-05-23 1991-12-03 Minnesota Mining And Manufacturing Company Flexible, substrate-insular retroreflective sheeting
EP0602599A1 (en) * 1992-12-16 1994-06-22 Minnesota Mining And Manufacturing Company Supported encapsulated-lens retroreflective sheeting
US5620775A (en) * 1995-11-03 1997-04-15 Minnesota Mining And Manufacturing Company Low refractive index glass microsphere coated article having a smooth surface and a method for preparing same
US5896227A (en) * 1996-10-01 1999-04-20 Minnesota Mining And Manufacturing Company Retroreflective sheeting and method for forming same

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5069964A (en) * 1989-05-23 1991-12-03 Minnesota Mining And Manufacturing Company Flexible, substrate-insular retroreflective sheeting
EP0602599A1 (en) * 1992-12-16 1994-06-22 Minnesota Mining And Manufacturing Company Supported encapsulated-lens retroreflective sheeting
US5620775A (en) * 1995-11-03 1997-04-15 Minnesota Mining And Manufacturing Company Low refractive index glass microsphere coated article having a smooth surface and a method for preparing same
US5896227A (en) * 1996-10-01 1999-04-20 Minnesota Mining And Manufacturing Company Retroreflective sheeting and method for forming same

Also Published As

Publication number Publication date
ITMO20010157A1 (en) 2003-01-27
ITMO20010157A0 (en) 2001-07-27
WO2003011579A2 (en) 2003-02-13

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