FR2894972A1 - Self cleaning plastic bin comprises an external surface coating made of hydrophilic material, an intermediate protection layer made of a hydrophobic material, and a thermoplastic matter - Google Patents

Self cleaning plastic bin comprises an external surface coating made of hydrophilic material, an intermediate protection layer made of a hydrophobic material, and a thermoplastic matter Download PDF

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Publication number
FR2894972A1
FR2894972A1 FR0512753A FR0512753A FR2894972A1 FR 2894972 A1 FR2894972 A1 FR 2894972A1 FR 0512753 A FR0512753 A FR 0512753A FR 0512753 A FR0512753 A FR 0512753A FR 2894972 A1 FR2894972 A1 FR 2894972A1
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France
Prior art keywords
furniture
hydrophilic material
external surface
protection layer
self cleaning
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Application number
FR0512753A
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French (fr)
Inventor
Denis Obriot
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Plastic Omnium SE
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Plastic Omnium SE
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Publication date
Application filed by Plastic Omnium SE filed Critical Plastic Omnium SE
Priority to FR0512753A priority Critical patent/FR2894972A1/en
Publication of FR2894972A1 publication Critical patent/FR2894972A1/en
Withdrawn legal-status Critical Current

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    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D1/00Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances

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  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Catalysts (AREA)
  • Laminated Bodies (AREA)

Abstract

The self cleaning plastic bin comprises an external surface (18) coating made of hydrophilic material (20), an intermediate protection layer made of a hydrophobic material, and a thermoplastic matter (24). The hydrophilic material has a photocatalysor and an alcohol group. An independent claim is included for a vat to receive waste.

Description

-1- La presente invention concerne un meuble en matiere plastique destineThe present invention relates to a plastic furniture intended for

a sojourner a I'exterieur et un bac constitue par un tel meuble. Par meuble destine a sojourner a I'extorieur >>, on entend tout objet susceptible d'etre installe ou amene, periodiquement ou occasionnellement, a I'exterieur, tel qu'un panneau de signalisation, un bac de stockage de dechets, un banc, une installation sportive ou ludique etc. Ces meubles sont exposes a de nombreux agents salissants, tels que des poussieres, des pluies etc. De ce fait, leur aspect exterieur se degrade rapidement. En outre, lorsque ces meubles sont en interaction avec des utilisateurs, qui sont 10 susceptibles de les toucher, it est preferable qu'ils restent propres. L'invention a notamment pour but de remedier a cet inconvenient en fournissant un meuble en matiere plastique destine a sojourner a I'exterieur, capable de conserver un meilleur aspect. A cet effet, ('invention a pour objet un meuble du type decrit ci-dessus, caracterise 15 en ce qu'il est realise, au moins partiellement, en un materiau hydrophile. On entend par < materiau hydrophile > un materiau qui se laisse mouiller par ('eau, c'est-a-dire un materiau sur Iequel ('eau a naturellement tendance a s'etaler. Ainsi, lorsqu'il pleut sur la surface externe du meuble, c'est a dire sa surface exposee aux intemperies exterieures, it ne se forme plus des gouttes de pluie, mais un 20 veritable film d'eau. La formation de ce film d'eau evite I'apparition de traces de pluie sur le meuble et facilite ('evacuation des poussieres en surface. Ce meuble est donc autonettoyant, ce qui signifie que certains agents salissants, degradant son aspect exterieur, sont elimines de fapon naturelle par des elements 25 exterieurs, ici la pluie, sans intervention aucune d'un utilisateur. De preference, au moins la surface externe du meuble est realisee en un materiau hydrophile. La nature hydrophile de ce materiau peut resulter d'un traitement de surface du meuble, posterieurement a son formage. Dans un autre mode de realisation, le meuble est integralement realise en un 30 materiau hydrophile. Dans ce cas, la nature hydrophile du materiau est obtenue par traitement de ce dernier dans sa masse, avant formage du meuble. Avantageusement, le meuble est egalement realise, au moins sur sa surface externe, en un materiau comprenant un photocatalyseur. On entend par photocatalyseur un compose chimique qui reagit avec des 35 photons, plus particulierement qui absorbe Ies photons d'un rayonnement de type UV  to stay outside and a tray constitutes such a piece of furniture. Furniture for the purpose of "visiting the exhibitor" means any object likely to be installed or brought, periodically or occasionally, outside, such as a sign, a waste storage bin, a bench , a sports facility or fun etc. This furniture is exposed to many messy agents, such as dust, rain etc. As a result, their external appearance deteriorates rapidly. In addition, when these furniture interact with users who are likely to touch them, it is preferable that they remain clean. The invention is intended to overcome this disadvantage by providing a piece of plastic furniture for sojourn outside, able to maintain a better appearance. To this end, the object of the invention is a piece of furniture of the type described above, characterized in that it is made, at least partially, of a hydrophilic material. <br/> <br/> By << hydrophilic material >> is meant a material which allows itself to wet with water, that is to say a material on which water naturally has a tendency to spread, so when it rains on the external surface of the furniture, ie its surface exposed to Outside weather, raindrops are no longer formed, but a real film of water.The formation of this film of water prevents the appearance of traces of rain on the furniture and facilitates the evacuation of dust on the surface. This piece of furniture is therefore self-cleaning, which means that certain messy agents, degrading its external appearance, are eliminated naturally by external elements, here the rain, without any intervention of a user, preferably at least the surface. external furniture is made of a hydrophilic material. This material may result from a surface treatment of the furniture after its forming. In another embodiment, the furniture is integrally made of a hydrophilic material. In this case, the hydrophilic nature of the material is obtained by treating the latter in its mass, before forming the piece of furniture. Advantageously, the piece of furniture is also produced, at least on its external surface, in a material comprising a photocatalyst. By photocatalyst is meant a chemical compound that reacts with photons, more particularly that absorbs the photons of a UV-type radiation.

-2- (ultraviolet), pour provoquer I'oxydation, puis la degradation, de certains composes lies a ce photocatalyseur. Ainsi, les salissures d'origine organiques, qui ont ete adsorbees par la surface externe, c'est-a-dire qui adherent a cette surface par liaison (faibles ou fortes), se decomposent, c'est-a-dire que leur adherence au meuble est, au moins partiellement, eliminee. Ainsi, le meuble selon !'invention est apte a se debarrasser egalement de salissures assez tenaces ayant diverses origines, comme par exemple la pollution. Avantageusement, le meuble est realise en matiere thermoplastique et comprend, 10 sur sa surface externe, un revetement en materiau hydrophile comprenant un phocatalyseur. Avantageusement dans ce cas, le meuble comprend egalement une couche intermediaire de protection, constituee d'un materiau hydrophobe. Ainsi, !'eau s'etale uniquement sur la surface externe du meuble et ne s'infiltre pas 15 dans la masse, car elle est arretee par la couche de protection hydrophobe ou, autrement dit, impermeable, ce qui permet une duree de vie du meuble plus importante. Dans un mode de realisation particulier, la matiere thermoplastique est du polypropylene (PP) ou du polyethylene terephtalate (PET). De fawn optionnelle, le photocatalyseur est a base de TiO2 (dioxyde de titane). 20 Optionnellement, le materiau hydrophile comprend au moins un compose comportant au moins un groupement de type alcool (OH). L'invention a egalement pour objet un bac destine a recevoir des dechets, constitue par un meuble tel que decrit ci-dessus. On designe par << bac destine a recevoir des dechets >>, tout objet dans lequel un 25 utilisateur depose des dechets, recyclables ou non, tel qu'un bac roulant, un container ou une borne d'apport volontaire. L'invention sera mieux comprise a Ia lecture de la description qui va suivre, donnee uniquement a titre d'exemple et faite en se referant a la figure 1, qui represente un mode de realisation d'un bac, constitue par un meuble selon ('invention, et a Ia figure 2, qui 30 represente une coupe d'une paroi 12 du bac 10 selon I'invention.  -2- (ultraviolet), to cause the oxidation, then degradation, of certain compounds related to this photocatalyst. Thus, organic stains, which have been adsorbed by the outer surface, that is to say which adhere to this surface by bonding (weak or strong), are decomposed, that is to say that their adhesion to the piece of furniture is at least partially eliminated. Thus, the furniture according to the invention is able to also get rid of stubborn dirt having various origins, such as pollution. Advantageously, the cabinet is made of thermoplastic material and comprises, on its external surface, a coating of hydrophilic material comprising a phocatalyst. Advantageously in this case, the cabinet also comprises an intermediate layer of protection, consisting of a hydrophobic material. Thus, the water spreads only on the outer surface of the furniture and does not infiltrate into the mass because it is stopped by the hydrophobic or, in other words, impermeable protective layer, which allows a longer life. more important furniture. In a particular embodiment, the thermoplastic material is polypropylene (PP) or polyethylene terephthalate (PET). Optionally, the photocatalyst is based on TiO 2 (titanium dioxide). Optionally, the hydrophilic material comprises at least one compound comprising at least one alcohol-type group (OH). The invention also relates to a tank for receiving waste, constitutes a piece of furniture as described above. The term "tank intended to receive waste" means any object in which a user disposes of waste, recyclable or not, such as a rolling container, a container or a voluntary intake terminal. The invention will be better understood on reading the description which will follow, given solely by way of example and made with reference to FIG. 1, which represents an embodiment of a tray, constituted by a piece of furniture according to and Figure 2, which shows a section of a wall 12 of the tank 10 according to the invention.

Designation des parties du dessin : bac de collecte de dechets 35 12 : paroi laterale ou frontale 14 : roue : couvercie 18 : surface externe 20 : revetement hydrophile 22 : couche de protection 24 : matiere thermoplastique  Designation of the parts of the drawing: waste collection tank 35 12: side or front wall 14: wheel: cover 18: external surface 20: hydrophilic coating 22: protective layer 24: thermoplastic material

Le bac de collecte 10 est realise en matiere thermoplastique 24, notamment en polypropylene (PP) ou en polyethylene terephtalate (PET). II comprend, sur sa surface exterieure 18, un revetement hydrophile 20 contenant 10 un photocatalyseur. En particulier, le revetement hydrophile comprend un compose comportant au moins un groupement de type alcool (OH) et le photocatalyseur est a base de TiO2 (dioxyde de titane). Le bac comprend egalement une couche intermediaire de protection 22, constituee 15 d'un materiau hydrophobe, permettant d'eviter ('infiltration de ('eau dans la masse. Par temps sec, un tel bac 10 de collecte accumule des agents salissants sur sa surface externe 18, comme des poussieres ou des substances organiques qui sont adsorbes par la surface externe 18. Ayant adhere a cette surface, ces agents salissants ne peuvent pas ate simplement nettoyes a I'aide d'eau.  The collection tank 10 is made of thermoplastic material 24, in particular polypropylene (PP) or polyethylene terephthalate (PET). It comprises, on its outer surface 18, a hydrophilic coating 20 containing a photocatalyst. In particular, the hydrophilic coating comprises a compound comprising at least one alcohol-type group (OH) and the photocatalyst is based on TiO 2 (titanium dioxide). The container also comprises an intermediate protective layer 22 made of a hydrophobic material, which makes it possible to prevent the infiltration of water into the mass.During dry weather, such a collection tank 10 accumulates soil-forming agents on its surface. outer surface 18, such as dust or organic substances which are adsorbed by the outer surface 18. Having adhere to this surface, these messy agents can not be simply cleaned with water.

20 Grace au photocatalyseur, lorsque le bac 10 est eclaire par de la lumiere, notamment la lumiere solaire emettant, entres autres, un rayonnement de type UV, le photocatalyseur absorbe les photons provenant du rayonnement solaire. Cela permet, par une reaction de photocatalyse, d'oxyder puis de decomposer les substances adsorbees sur la surface externe 18. Ces substances decomposees sont appelees residus et sont 25 alors comparables aux autres poussieres qui peuvent titre simplement rincees a I'eau. Ensuite, Iorsqu'iI pleut, le revetement hydrophile entralne la formation d'un film d'eau, et non de gouttes de pluie. D'une part, ce film d'eau ne laisse pas autant de traces que des gouttes de pluie, d'autre part iI permet d'evacuer toutes les poussieres et tous les residus presents a la surface du bac 10.With the photocatalyst, when the tank 10 is illuminated by light, in particular solar light emitting, among other things, UV radiation, the photocatalyst absorbs photons from solar radiation. This allows, by a photocatalysis reaction, to oxidize and then to decompose the adsorbed substances on the outer surface 18. These decomposed substances are called residues and are then comparable to other dusts which can simply be rinsed with water. Then, when it rains, the hydrophilic coating entails the formation of a film of water, and not raindrops. On the one hand, this film of water does not leave as much traces as raindrops, on the other hand it makes it possible to evacuate all the dust and all residues present on the surface of the tank 10.

30 Le bac 10 presente donc en permanence un meilleur aspect que les bacs connus jusqu'e present, puisqu'il est regulierement nettoye par de la pluie. II est toutefois evident que le mode de realisation decrit n'est pas limitatif de ('invention. Dans une variante non representee, le meuble n'est pas un bac destine a recevoir des dechets mais un panneau de signalisation, par exemple. -3-The tank 10 therefore always has a better appearance than the bins known until now, since it is regularly cleaned by rain. However, it is obvious that the embodiment described is not limiting of the invention.In a variant not shown, the furniture is not a tank for receiving waste but a sign, for example. -

Claims (7)

REVENDICATIONS 1. Meuble (10) destine a sojourner a I'exterieur, en matiere plastique, caracterise en ce qu'il comprend, sur sa surface externe (18), un revetement (20) en materiau hydrophile comprenant un photocatalyseur.  1. Furniture (10) intended to stay outside, plastic, characterized in that it comprises, on its outer surface (18), a coating (20) of hydrophilic material comprising a photocatalyst. 2. Meuble (10) selon la revendication 1, comprenant une couche intermediaire de protection (22), constituee d'un materiau hydrophobe.  2. Furniture (10) according to claim 1, comprising an intermediate protective layer (22) made of a hydrophobic material. 3. Meuble (10) selon I'une quelconque des revendications precedentes, realise en matiere thermoplastique.  3. Furniture (10) according to any one of the preceding claims, made of thermoplastic material. 4. Meuble) selon la revendication 3, la matiere thermoplastique (24) etant du polypropylene (PP) ou du polyethylene terephtalate (PET).  4. Cabinet) according to claim 3, the thermoplastic material (24) being polypropylene (PP) or polyethylene terephthalate (PET). 5. Meuble (10) selon rune quelconque des revendications precedentes, le photocatalyseur etant a base de TiO2 (dioxyde de titane).  5. Furniture (10) according to any one of the preceding claims, the photocatalyst being based on TiO2 (titanium dioxide). 6. Meuble (10) selon rune quelconque des revendications precedentes, le materiau hydrophile comprenant au moins un compose comportant au moins un groupement de type alcool (OH).  6. Furniture (10) according to any one of the preceding claims, the hydrophilic material comprising at least one compound comprising at least one group of alcohol type (OH). 7. Bac destine a recevoir des dechets, caracterise en ce qu'il est constitue par un meuble selon rune des revendications 1 a 6.20  7. Tank for receiving waste, characterized in that it is constituted by a piece of furniture according rune claims 1 to 6.20
FR0512753A 2005-12-15 2005-12-15 Self cleaning plastic bin comprises an external surface coating made of hydrophilic material, an intermediate protection layer made of a hydrophobic material, and a thermoplastic matter Withdrawn FR2894972A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR0512753A FR2894972A1 (en) 2005-12-15 2005-12-15 Self cleaning plastic bin comprises an external surface coating made of hydrophilic material, an intermediate protection layer made of a hydrophobic material, and a thermoplastic matter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0512753A FR2894972A1 (en) 2005-12-15 2005-12-15 Self cleaning plastic bin comprises an external surface coating made of hydrophilic material, an intermediate protection layer made of a hydrophobic material, and a thermoplastic matter

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FR2894972A1 true FR2894972A1 (en) 2007-06-22

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0857770A2 (en) * 1997-02-06 1998-08-12 Shin-Etsu Chemical Co., Ltd. Coating compositions, hydrophilic films, and hydrophilic film-coated articles
EP1146099A2 (en) * 2000-04-13 2001-10-17 JSR Corporation Coating composition, method for producing the same, cured product and coating film
US20050266248A1 (en) * 2004-05-28 2005-12-01 Millero Edward R Multi-layer coatings and related methods

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0857770A2 (en) * 1997-02-06 1998-08-12 Shin-Etsu Chemical Co., Ltd. Coating compositions, hydrophilic films, and hydrophilic film-coated articles
EP1146099A2 (en) * 2000-04-13 2001-10-17 JSR Corporation Coating composition, method for producing the same, cured product and coating film
US20050266248A1 (en) * 2004-05-28 2005-12-01 Millero Edward R Multi-layer coatings and related methods

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