EP1925463A2 - Procédé de fabrication des produits photoluminescents et produits photoluminescents - Google Patents

Procédé de fabrication des produits photoluminescents et produits photoluminescents Download PDF

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Publication number
EP1925463A2
EP1925463A2 EP20070022677 EP07022677A EP1925463A2 EP 1925463 A2 EP1925463 A2 EP 1925463A2 EP 20070022677 EP20070022677 EP 20070022677 EP 07022677 A EP07022677 A EP 07022677A EP 1925463 A2 EP1925463 A2 EP 1925463A2
Authority
EP
European Patent Office
Prior art keywords
photoluminescent
phase
product
matrix material
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Withdrawn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
EP20070022677
Other languages
German (de)
English (en)
Inventor
Franco Luca Beltrame
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.)
Lucedentro Srl
Original Assignee
Lucedentro Srl
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 Lucedentro Srl filed Critical Lucedentro Srl
Publication of EP1925463A2 publication Critical patent/EP1925463A2/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
    • B44C5/00—Processes for producing special ornamental bodies
    • B44C5/04—Ornamental plaques, e.g. decorative panels, decorative veneers
    • B44C5/0453—Ornamental plaques, e.g. decorative panels, decorative veneers produced by processes involving moulding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44D—PAINTING OR ARTISTIC DRAWING, NOT OTHERWISE PROVIDED FOR; PRESERVING PAINTINGS; SURFACE TREATMENT TO OBTAIN SPECIAL ARTISTIC SURFACE EFFECTS OR FINISHES
    • B44D5/00—Surface treatment to obtain special artistic surface effects or finishes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44F—SPECIAL DESIGNS OR PICTURES
    • B44F1/00—Designs or pictures characterised by special or unusual light effects
    • B44F1/08—Designs or pictures characterised by special or unusual light effects characterised by colour effects

Definitions

  • the present invention relates to a method for making photoluminescent products and to the photoluminescent product thus obtainable.
  • these products can be arranged, for example, along a staircase, at or near the step tread, to allow identifying a reliable support on the part of a user during movement.
  • these products can be used for a purely decorative purpose, in particular to obtain a characteristic visual impact inside an environment in the partial or complete absence of lighting.
  • the known photoluminescent products are generally made starting with a vitreous matrix material or a substantially transparent polymer material, mixed with a photoluminescent pigment in powder, flake state, etc..
  • manufacture by means of mixing with vitreous or polymer material results in the photoluminescent pigment also being distributed in the inner portion of the product, along the entire thickness.
  • the photoluminescent pigment must be used in considerable quantity to obtain a satisfactory visual effect in the absence of light and, in view of the far from negligible costs of such pigment, this seriously affects the final costs of the manufactured photoluminescent product.
  • the main aim of the present invention is to find out a method for making photoluminiscent products that allows to achieve the above mentioned improvements and therefore to make a photoluminiscent product at considerably lower costs.
  • Another object of the present invention is to achieve the above mentioned improvements with a simple structure, of relatively easy implementation and effective operation, as well as safe to use.
  • this method for making photoluminescent products comprising at least one melting phase of a vitreous matrix material, characterized in that it comprises at least one application phase of a photoluminescent pigment on at least one portion of the outer surface of said vitreous matrix material, following such melting phase, and at least one forming phase by pressing of said vitreous matrix material, following said application phase, and suitable for the at least partial penetration of said photoluminescent pigment inside said vitreous matrix material for obtaining at least one photoluminescent product.
  • a photoluminescent product comprising a body made of vitreous matrix material and a photoluminescent pigment distributed inside at least one portion of said body, characterized in that said photoluminescent pigment is arranged close to the outer surface of said body.
  • the photoluminescent product I comprises a body 2 made using a vitreous matrix material, indicated in the above illustrations with the reference A, and a photoluminescent pigment B distributed inside at least one portion of the body 2 and arranged close to the outer surface 2a of the body 2.
  • the photoluminescent pigment B can have different grain size and, in particular, can be in powder, flake state, etc.
  • the body 2 can be substantially plate shaped and the photoluminescent pigment
  • B can be distributed on the entire outer surface 2a of the body 2.
  • the photoluminescent pigment B can be distributed only on the surface portion of the body 2 that remains visible after the installation of the photoluminescent product 1.
  • the photoluminescent product 1 can comprise a layer 3 of substantially transparent fixing material distributed on the outer surface 2a of the body 2.
  • the layer 3 is suitable for making the photoluminescent product 1 substantially waterproof and for also allowing the fixing to the body 2 of the photoluminescent pigments 2 closest to the outer surface 2a.
  • the method for making the photoluminescent product 1 comprises a first preparation phase of a predetermined quantity of vitreous matrix material A.
  • the vitreous matrix material A is then placed inside a kiln and brought to melting temperature to obtain a substantially uniform body 2.
  • the method comprises a phase of gradual cooling of the body 2, during which the internal kiln temperature is read.
  • the temperature can be read by means of a suitable sensor device such as, for example, an optical temperature reader positioned close to the kiln exit.
  • a suitable sensor device such as, for example, an optical temperature reader positioned close to the kiln exit.
  • a photoluminescent pigment B is applied on at least one portion of the outer surface 2a of the body 2.
  • the photoluminescent pigment B can have a grain size between 45x10 -6 m and 450x10 -6 m and, in particular, can be used in the form of powders, flakes, etc.
  • a photoluminescent product 1 with optimum aesthetic characteristics calls for the use of a photoluminescent pigment B with grain size between 200x10 -6 m and 300x10 -6 m.
  • the above application phase can be performed, for example, by bringing the outer surface 2a of the melted body 2 into direct contact with the photoluminescent pigment B distributed on a flat surface.
  • the photoluminescent pigment B can be distributed by gravity on the outer surface 2a. Different methods of application of the photoluminescent pigment B cannot however be ruled out.
  • the photoluminescent pigment B can be distributed in a substantially uniform way on the entire outer surface 2a of the body 2.
  • the photoluminescent pigment B can be localised inside a predetermined area of the outer surface 2a or, again, it can be distributed to delineate a predefined design or decoration.
  • the body 2 with the photoluminescent pigment B thus applied is placed inside a mould and is formed by means of one or more presses P to obtain at least one photoluminescent product 1.
  • the photoluminescent pigment B penetrates at least partially inside the vitreous matrix material A, through the outer surface 2a.
  • a photoluminescent product 1 can, for example, be made of the type of a tile, of a mosaic tessera or the like, the body 2 of which has a substantially plate shape, and in which the photoluminescent pigment B is distributed on the flat faces opposite the body 2.
  • the use cannot however be ruled out of different types of moulds and presses P suitable for making vitreous matrix photoluminescent products I of different shapes.
  • the photoluminescent product 1 thus obtained can undergo a tempering phase suitable for upgrading the intrinsic hardness and strength properties.
  • Finishing operations of the photoluminescent product 1 can also be performed, such as grinding, sandblasting or tumbling operations of the outer surface 2a.
  • a last distribution phase of a layer 3 of substantially transparent fixing material on the outer surface 2a permits waterproofing the photoluminescent product 1 and the fixing of those photoluminescent pigments B closest to the outer surface 2a as well.
  • the photoluminescent pigment is only distributed close to the outer surface of the body in vitreous matrix material. This therefore allows the use of a smaller quantity of the photoluminescent pigment compared to known methods that imply the mixing and uniform distribution of the pigment inside the body in vitreous matrix material.
  • the distribution of the pigment on the outer surface at the same time ensures a satisfactory visual effect in the absence of light; visual effect that does not in any case differ significantly from the effect achieved by means of the known products.
  • the described method furthermore allows overcoming the problems tied to the partial loss of the photoluminescent effect of the pigment if this undergoes the high temperatures needed to melt glass.
  • the application of the photoluminescent pigment is done after the melting and the partial cooling of the vitreous matrix material.

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  • Finishing Walls (AREA)
EP20070022677 2006-11-22 2007-11-22 Procédé de fabrication des produits photoluminescents et produits photoluminescents Withdrawn EP1925463A2 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITMO20060388 ITMO20060388A1 (it) 2006-11-22 2006-11-22 Metodo per la realizzazione di manufatti fotoluminescenti e manufatto fotoluminescente cosi' ottenibile.

Publications (1)

Publication Number Publication Date
EP1925463A2 true EP1925463A2 (fr) 2008-05-28

Family

ID=39135371

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20070022677 Withdrawn EP1925463A2 (fr) 2006-11-22 2007-11-22 Procédé de fabrication des produits photoluminescents et produits photoluminescents

Country Status (2)

Country Link
EP (1) EP1925463A2 (fr)
IT (1) ITMO20060388A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012020437A1 (fr) 2010-08-11 2012-02-16 Purple Innovation S.R.L. Contenant luminescent pour des aliments
IT201600128497A1 (it) * 2016-12-20 2018-06-20 Ceram Mac 3 S R L Metodo per la fabbricazione di manufatti ceramici

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012020437A1 (fr) 2010-08-11 2012-02-16 Purple Innovation S.R.L. Contenant luminescent pour des aliments
IT201600128497A1 (it) * 2016-12-20 2018-06-20 Ceram Mac 3 S R L Metodo per la fabbricazione di manufatti ceramici
WO2018116026A1 (fr) * 2016-12-20 2018-06-28 Ceramiche Mac 3 S.R.L. Procédé de fabrication de produits céramiques

Also Published As

Publication number Publication date
ITMO20060388A1 (it) 2008-05-23

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