CA2064484A1 - Retroreflective sheet - Google Patents
Retroreflective sheetInfo
- Publication number
- CA2064484A1 CA2064484A1 CA2064484A CA2064484A CA2064484A1 CA 2064484 A1 CA2064484 A1 CA 2064484A1 CA 2064484 A CA2064484 A CA 2064484A CA 2064484 A CA2064484 A CA 2064484A CA 2064484 A1 CA2064484 A1 CA 2064484A1
- Authority
- CA
- Canada
- Prior art keywords
- adhesive
- formations
- impinging
- sheeting
- predominant
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/12—Reflex reflectors
- G02B5/122—Reflex reflectors cube corner, trihedral or triple reflector type
- G02B5/124—Reflex reflectors cube corner, trihedral or triple reflector type plural reflecting elements forming part of a unitary plate or sheet
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
- B32B7/14—Interconnection of layers using interposed adhesives or interposed materials with bonding properties applied in spaced arrangements, e.g. in stripes
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F13/00—Illuminated signs; Luminous advertising
- G09F13/04—Signs, boards or panels, illuminated from behind the insignia
- G09F13/0418—Constructional details
- G09F13/0472—Traffic signs
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F13/00—Illuminated signs; Luminous advertising
- G09F13/16—Signs formed of or incorporating reflecting elements or surfaces, e.g. warning signs having triangular or other geometrical shape
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2551/00—Optical elements
Abstract
A retroflective material retroreflects a white coloration for light beams impinging thereon at night and appears to have the coloration of the underlying support in daylight. This material utilizes retroreflective sheeting having closely spaced microretroreflective formations on one surface, and a transparent adhesive in a pattern over that surface so as to leave the predominant portion of the surface free from adhesive. A transparent backing element is adhered to the sheeting by the adhesive, and it extends in a plane generally above the formations to leave the formations in the predominant surface area exposed to the atmosphere thereabout.
Light rays entering the the other surface of the sheeting and impinging upon the prisms of the predominant surface area are retroreflected by the interface with the atmosphere, and those impinging upon the formations in the area coated by the adhesive pass through the adhesive and the backing for reflection and refraction from the underlying surface, thereby evidencing its color in daylight.
Light rays entering the the other surface of the sheeting and impinging upon the prisms of the predominant surface area are retroreflected by the interface with the atmosphere, and those impinging upon the formations in the area coated by the adhesive pass through the adhesive and the backing for reflection and refraction from the underlying surface, thereby evidencing its color in daylight.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US68405791A | 1991-04-11 | 1991-04-11 | |
US07/684,057 | 1991-04-11 |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2064484A1 true CA2064484A1 (en) | 1992-10-12 |
CA2064484C CA2064484C (en) | 1998-08-11 |
Family
ID=24746533
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002064484A Expired - Fee Related CA2064484C (en) | 1991-04-11 | 1992-03-31 | Retroreflective sheet |
Country Status (5)
Country | Link |
---|---|
JP (1) | JPH087281B2 (en) |
CA (1) | CA2064484C (en) |
DE (1) | DE4212203A1 (en) |
FR (1) | FR2675271B1 (en) |
GB (1) | GB2254826B (en) |
Families Citing this family (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5831766A (en) | 1993-02-17 | 1998-11-03 | Reflexite Corporation | Retroreflective structure |
US6029382A (en) * | 1993-09-08 | 2000-02-29 | Kochanowski; George E. | Reflective sign |
US5654825A (en) * | 1995-05-15 | 1997-08-05 | Milton; Richard M. | Line obstruction marker ball with enhanced daytime and nighttime visibility |
US5784197A (en) * | 1996-04-01 | 1998-07-21 | Minnesota Mining And Manufacturing Company | Ultra-flexible retroreflective sheeting with coated back surface |
US5754338A (en) * | 1996-04-01 | 1998-05-19 | Minnesota Mining And Manufacturing Company | Structured retroreflective sheeting having a rivet-like connection |
US5882796A (en) * | 1996-04-01 | 1999-03-16 | Minnesota Mining And Manufacturing Company | Bonded structured retroreflective sheeting |
US5910858A (en) * | 1996-04-01 | 1999-06-08 | Minnesota Mining And Manufacturing Company | Retroreflective sheeting with coated back surface |
US5805338A (en) * | 1996-04-10 | 1998-09-08 | Minnesota Minning And Manufacturing Company | Pillowed flexible cube-corner sheeting and methods of manufacture |
US5940212A (en) * | 1997-10-30 | 1999-08-17 | 3M Innovative Properties Company | Cube corner article with altered inactive areas and method of making same |
US6280822B1 (en) * | 1999-01-11 | 2001-08-28 | 3M Innovative Properties Company | Cube corner cavity based retroeflectors with transparent fill material |
CN102460125B (en) | 2009-04-15 | 2015-11-25 | 3M创新有限公司 | Prevent the blooming of optical coupled |
CN102460244B (en) | 2009-04-15 | 2014-11-19 | 3M创新有限公司 | Lightguide with optical film containing voids and blacklight for display system |
TWI605276B (en) | 2009-04-15 | 2017-11-11 | 3M新設資產公司 | Optical construction and display system incorporating same |
EP2558288B1 (en) | 2010-04-15 | 2019-01-02 | 3M Innovative Properties Company | Retroreflective articles including optically active areas and optically inactive areas |
EP2558289B1 (en) | 2010-04-15 | 2018-12-26 | 3M Innovative Properties Company | Retroreflective articles including optically active areas and optically inactive areas |
CN102858528B (en) | 2010-04-15 | 2016-05-11 | 3M创新有限公司 | Comprise the retroreflective articles of optical activity region and optics non-active region |
US8783880B2 (en) * | 2011-11-01 | 2014-07-22 | Avery Dennison Corporation | Rulable multi-directional prism cluster retroreflective sheeting |
JP6382862B2 (en) * | 2016-01-15 | 2018-08-29 | スリーエム イノベイティブ プロパティズ カンパニー | Retroreflective article and manufacturing method thereof |
JP2019078910A (en) * | 2017-10-25 | 2019-05-23 | 日本カーバイド工業株式会社 | Retroreflection sheet |
JP7352538B2 (en) | 2018-03-27 | 2023-09-28 | 日本カーバイド工業株式会社 | Manufacturing method of retroreflective sheet and retroreflective sheet |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1646251C3 (en) * | 1966-11-14 | 1973-07-12 | Minnesota Mining & Mfg | One-piece reflector |
CA1063570A (en) * | 1967-03-24 | 1979-10-02 | Amerace Corporation | Light reflector structure |
US4025159A (en) * | 1976-02-17 | 1977-05-24 | Minnesota Mining And Manufacturing Company | Cellular retroreflective sheeting |
US4349598A (en) * | 1976-12-01 | 1982-09-14 | Minnesota Mining And Manufacturing Company | High incidence angle retroreflective material |
US4145112A (en) * | 1977-07-14 | 1979-03-20 | Minnesota Mining And Manufacturing Company | Low-profile raised retroreflective sheeting |
US4555161A (en) * | 1984-02-16 | 1985-11-26 | Reflexite Corporation | Encapsulated retroreflective material and method of making same |
US4801193A (en) * | 1988-03-04 | 1989-01-31 | Reflexite Corporation | Retroreflective sheet material and method of making same |
US4952023A (en) * | 1988-03-18 | 1990-08-28 | Minnesota Mining And Manufacturing Company | Internally illuminated retroreflective sign |
US4895428A (en) * | 1988-07-26 | 1990-01-23 | Minnesota Mining And Manufacturing Company | High efficiency retroreflective material |
AU614466B2 (en) * | 1989-05-23 | 1991-08-29 | Minnesota Mining And Manufacturing Company | Flexible, substrate-insular retroreflective sheeting |
US5171624A (en) * | 1990-06-01 | 1992-12-15 | Reflexite Corporation | Retroreflective microprismatic material and method of making same |
-
1992
- 1992-03-31 CA CA002064484A patent/CA2064484C/en not_active Expired - Fee Related
- 1992-04-10 JP JP4091165A patent/JPH087281B2/en not_active Expired - Fee Related
- 1992-04-10 FR FR9204442A patent/FR2675271B1/en not_active Expired - Fee Related
- 1992-04-10 DE DE4212203A patent/DE4212203A1/en not_active Withdrawn
- 1992-04-13 GB GB9208092A patent/GB2254826B/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
FR2675271A1 (en) | 1992-10-16 |
JPH05107406A (en) | 1993-04-30 |
FR2675271B1 (en) | 1995-01-13 |
CA2064484C (en) | 1998-08-11 |
GB2254826B (en) | 1994-09-07 |
JPH087281B2 (en) | 1996-01-29 |
DE4212203A1 (en) | 1992-10-22 |
GB9208092D0 (en) | 1992-05-27 |
GB2254826A (en) | 1992-10-21 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKLA | Lapsed |