EP0846574A2 - Article phosphorescent - Google Patents

Article phosphorescent Download PDF

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Publication number
EP0846574A2
EP0846574A2 EP97308218A EP97308218A EP0846574A2 EP 0846574 A2 EP0846574 A2 EP 0846574A2 EP 97308218 A EP97308218 A EP 97308218A EP 97308218 A EP97308218 A EP 97308218A EP 0846574 A2 EP0846574 A2 EP 0846574A2
Authority
EP
European Patent Office
Prior art keywords
article
article according
phosphorescent
paint
pigment
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.)
Withdrawn
Application number
EP97308218A
Other languages
German (de)
English (en)
Other versions
EP0846574A3 (fr
Inventor
Wah Sing Li
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.)
Metro King Ltd
Original Assignee
Metro King Ltd
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 Metro King Ltd filed Critical Metro King Ltd
Publication of EP0846574A2 publication Critical patent/EP0846574A2/fr
Publication of EP0846574A3 publication Critical patent/EP0846574A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44F—SPECIAL DESIGNS OR PICTURES
    • B44F1/00—Designs or pictures characterised by special or unusual light effects
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
    • B44C5/00—Processes for producing special ornamental bodies

Definitions

  • This invention relates to a phosphorescent article and, in particular, such an article for decoration purposes.
  • phosphorescent decoration items/articles which may be stuck onto a surface, e.g. wall, by adhesive materials.
  • Such items include phosphorescent pigments which can absorb and store natural or artificial light, and emit it in the form of visible light in the dark.
  • Such decoration items may be in the shape of star or other celestial bodies. When they are stuck onto a wall and when night time comes, they will emit visible light and glow in darkness.
  • Such decoration items are usually stuck onto a surface by an adhesive material under the commercial product name "WHITE TACK-IT” (Trade Mark) traded and manufactured by A.W. Faber-Castell (M) Sdn. Rhd.
  • This adhesive material is made of polyisobutylene polymer mixed with inert filler, petroleum distillate and pigment, and is white in colour.
  • a problem associated with such an arrangement is that as the adhesive material is attached to the back of the item for adhering it onto the wall, and when it glows in darkness, a shadow or darker region corresponding to the shape of the adhesive material will appear. This will adversely affect the aesthetic appearance and decorating effect of the items. At least part of the reason for this phenomenon is that some of the phosphorescent light falling onto the adhesive material is absorbed by it, thus resulting in that immediate area being perceived as being relatively darker than the surrounding region.
  • a phosphorescent article made at least of a synthetic resin incorporated with a phosphorescent pigment, wherein the article comprises a permanent backing that reflects at least part of the phosphorescent light falling thereon.
  • the synthetic resin may be polypropylene.
  • the backing may be paint.
  • the paint may be provided on a back side of the article.
  • the paint may advantageously cover substantially the whole of the back side of the article.
  • the back side of article may conveniently be releasably attachable to fixing means made at least of polyisobutylene polymer mixed with inert filler, petroleum distillate and pigment.
  • the phosphorescent pigment may suitably be composed mainly of phosphorous zinc sulfide (ZnS:Cu).
  • the backing may be white in colour.
  • the paint may be composed at least of 25 % - 55% of an aromatic petroleum distillate, up to 40% of a pigment, 2% - 3% of a polyethylene wax, 25% to 35% of resins (chlorinated polypropylene) and 3% - 5% of ethylene-vinyl acetate copolymer.
  • the article may be in star shape.
  • a phosphorescent decoration item/article is generally designated as 10, and is generally in a star-like shape.
  • the item 10 includes substantially planar front side 12 and back side 14. To the whole of the back side 14 is painted a paint 16 to be discussed below.
  • Adhesive material in the form of a piece of white deformable adhesive 18 is attached to the back side 14 of the article 10. The article 10 may then be attached onto a surface, e.g. a wall or a picture-frame, for decoration purposes.
  • the article 10 is made at least of polypropylene incorporated with a phosphorescent pigment composed mainly of phosphorous zinc sulfide (ZnS:Cu). Phosphorescence/After-glow of the phosphorescent pigment may remain visible in the dark for about 2 to 4 hours, but is dependent on a number of factors, including the source and intensity of the excitation energy.
  • Suitable phosphorescent pigments suitable for use in the present invention may be sourced from Nemoto & Co., Ltd. of Japan. Alternatively, suitable phosphorescent pigments may be ones traded by Ridel-de Ha ⁇ n AG, of Germany, under and by reference to "LUMILUX N-pigments" (Trade Mark).
  • deformable adhesive 18 such may be one traded by A.W. Faber-Castell (M) Sdn. Bhd, of Malaysia, under and by reference to "WHITE TACK-IT” (Trade Mark).
  • This adhesive is composed mainly of polyisobutylene polymer mixed with inert filler, petroleum distillate and pigment.
  • a disadvantage associated with the existing arrangement is that a shadow corresponding to the shape of the adhesive 18 will appear when the article 10 emits light in the darkness. It is found that this problem can be solved by providing a backing, e.g. a paint 16, to the back side 14 of the article 10.
  • a backing e.g. a paint 16
  • most paints do not stick permanently to the article 10, which is made of polypropylene, and it is possible to remove such paints from the article 10 by scratching it by finger-nail
  • This paint is composed at least of 25% to 55% of an aromatic petroleum distillate, up to 40% of a pigment, 2% to 3% of a polyethylene wax, 25% to 35% of resins (chlorinated polypropylene), and 3% to 5% of ethylene-vinyl acetate copolymer.
  • the paint 16 may be applied on to the back side 14 of the article 10 by silk-screen printing.

Landscapes

  • Luminescent Compositions (AREA)
  • Laminated Bodies (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)
  • Adhesive Tapes (AREA)
EP97308218A 1996-12-06 1997-10-16 Article phosphorescent Withdrawn EP0846574A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US76166096A 1996-12-06 1996-12-06
US761660 1996-12-06

Publications (2)

Publication Number Publication Date
EP0846574A2 true EP0846574A2 (fr) 1998-06-10
EP0846574A3 EP0846574A3 (fr) 1999-01-20

Family

ID=25062897

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97308218A Withdrawn EP0846574A3 (fr) 1996-12-06 1997-10-16 Article phosphorescent

Country Status (1)

Country Link
EP (1) EP0846574A3 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4943896A (en) * 1988-11-21 1990-07-24 Tony Johnson Production of improved infant care articles
EP0522785A2 (fr) * 1991-07-06 1993-01-13 Pilkington Plc Panneau phosphorescent
US5217763A (en) * 1991-02-07 1993-06-08 Boury Bradley J Simulated three-dimensional night sky pattern kit and method of using same
EP0704510A1 (fr) * 1994-09-30 1996-04-03 Ykk Corporation Article phosphorescent
EP0725119A1 (fr) * 1995-02-01 1996-08-07 Ykk Corporation Article phosphorescent

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4943896A (en) * 1988-11-21 1990-07-24 Tony Johnson Production of improved infant care articles
US5217763A (en) * 1991-02-07 1993-06-08 Boury Bradley J Simulated three-dimensional night sky pattern kit and method of using same
EP0522785A2 (fr) * 1991-07-06 1993-01-13 Pilkington Plc Panneau phosphorescent
EP0704510A1 (fr) * 1994-09-30 1996-04-03 Ykk Corporation Article phosphorescent
EP0725119A1 (fr) * 1995-02-01 1996-08-07 Ykk Corporation Article phosphorescent

Also Published As

Publication number Publication date
EP0846574A3 (fr) 1999-01-20

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