EP2532824A2 - Sichtschutz aus Gewebe für Dopelverglasung und dergleichen - Google Patents

Sichtschutz aus Gewebe für Dopelverglasung und dergleichen Download PDF

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Publication number
EP2532824A2
EP2532824A2 EP12171249A EP12171249A EP2532824A2 EP 2532824 A2 EP2532824 A2 EP 2532824A2 EP 12171249 A EP12171249 A EP 12171249A EP 12171249 A EP12171249 A EP 12171249A EP 2532824 A2 EP2532824 A2 EP 2532824A2
Authority
EP
European Patent Office
Prior art keywords
fabric
shield
double
interference filter
metal film
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Withdrawn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
EP12171249A
Other languages
English (en)
French (fr)
Other versions
EP2532824A3 (de
Inventor
Massimo Gentili
Giovanni Nicolosi
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.)
Pellini SpA
Original Assignee
Pellini SpA
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 Pellini SpA filed Critical Pellini SpA
Publication of EP2532824A2 publication Critical patent/EP2532824A2/de
Publication of EP2532824A3 publication Critical patent/EP2532824A3/de
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/24—Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; Slat blinds
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/24—Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; Slat blinds
    • E06B9/26—Lamellar or like blinds, e.g. venetian blinds
    • E06B9/264—Combinations of lamellar blinds with roller shutters, screen windows, windows, or double panes; Lamellar blinds with special devices
    • E06B2009/2643—Screens between double windows

Definitions

  • the present invention concerns a fabric shield for double-glazing units and the like.
  • the problems are, in particular, related to the absorption of the incident solar radiation.
  • the temperatures inside of the chamber defined by the double layer of glass can indeed reach very high levels, which in some cases can even reach 100°C.
  • phenomena of vapour release can be activated by the fibres forming the fabric, which, following the cooling of the glass, can then condensate on the surface generating undesired effects, such as the creation of misted spots or other similar phenomena, generally known in the field as fogging phenomena.
  • the technical fabrics are coated with metal films, for example aluminium, deposited through physical vaporization or through suitable chemical treatments; in other solutions the shield is made through metallization of a thin continuous plastic film, the specular appearance of which however, generates a dazzling effect which is not suitable for use in double-glazing units.
  • metal films for example aluminium, deposited through physical vaporization or through suitable chemical treatments; in other solutions the shield is made through metallization of a thin continuous plastic film, the specular appearance of which however, generates a dazzling effect which is not suitable for use in double-glazing units.
  • Aluminium is selected since the general theory of reflectivity of metals indicates it as the metal material with the best reflection properties in the wide range from ultraviolet to infrared.
  • the metal coating film is made from steel.
  • the results are however worse than those which can be obtained with the aluminium coating, which is due to the lower reflectivity in the spectral bands of visible light and the near infrared of steel with respect to aluminium.
  • the aluminium coating which indeed forms the best solution available in this field, makes it possible to obtain results which are not however satisfactory in terms of overcoming the aforementioned drawbacks, and mainly the problems of fogging up inside of the double-glazing: indeed, the simulation carried out related to this type of solution indicates a temperature on the blind of around 94°, wherein such data is also confirmed experimentally.
  • the technical task of the present invention is therefore that of improving the state of the art, by devising a fabric shield for double-glazing units and the like which makes it possible to limit the temperatures inside the double-glazing itself within the desired levels, so as to not generate vapour and other undesired phenomena.
  • one purpose of the present invention is to make a fabric shield for double-glazing units and the like that is also characterized by high rigidity, so as to overcome the productive limitations - in terms of obtainable surface - due to the undulation effect which is usually generated in the opened up blind.
  • the presence of an interference filter deposited on the film of aluminium which in turn coats the fabric forming the shield substantially increases the reflectivity of the fabric in the visible area, thus limiting in a decisive manner the conversion of incident solar energy into thermal energy and thus limiting the temperature of the glass and of the shield within the desired limits.
  • the presence of an interference filter deposited on the metal film coating the fabric of the shield increases the rigidity of the fabric itself in a considerable manner, eliminating or at least drastically minimizing undulation phenomena which characterise the shield when it is in the completely opened up configuration. Further advantageous characteristics are described in the dependent claims.
  • reference numeral 1 wholly indicates a fabric shield for double-glazing units and the like according to the present invention.
  • the double-glazing unit represented exploded in figure 1 is wholly indicated with reference numeral 2 and, purely as an example and not for limiting purposes, comprises a quadrangular frame 3 comprising four open metal window channels 4 that are reciprocally connected with L-bars 5, for example made from plastic.
  • a motor group 6 for actuating the shield 1 is installed.
  • the shield 1 is wrapped around a roller 7 rotatably supported at a section bar 8 mounted below the upper window channel 4.
  • the shield 1 according to the invention can also be pleated, or of yet another type, without any limitation: in such a case it is clear that there will not be a roller 7 inside the double-glazing, but there will be other devices suitable for supporting other types of blinds.
  • the shield 1, according to the present invention has shape and dimensions that can vary in relation to the specific application requirements.
  • the shield 1 is made, for example, from a fabric comprising a polyester fibre; alternatively, it can be made from a fabric comprising any other suitable material for this type of application.
  • At least a portion of the fabric with which the shield is made is coated with a metal film.
  • the aforementioned metal film comprises aluminium.
  • the metal film with which the fabric is coated could comprise other types of metals, for example steel or yet others, without particular limitations.
  • substantially the entire surface of the fabric with which it is made is coated with the aforementioned metal film, so as to obtain the maximum reflectivity of the incident radiation in the visible spectrum.
  • the aforementioned metal film is at least partially covered with an interference filter having high reflectivity in the visible spectrum.
  • substantially the entire surface of the metal film is covered with an interference filter having high reflectivity in the visible spectrum.
  • the interference filter comprises at least one double layer of metal oxides.
  • the interference filter comprises four layers of metal oxides.
  • the aforementioned four layers are made from two types of metal oxides, arranged alternated on one another.
  • One of the types of metal oxides, with which the four layers of the interference filter are made, comprises silicon dioxide (SiO 2 ).
  • Such a material has a refractive index of 1.46.
  • niobium pentoxide Nb 2 O 5
  • This other material has a refractive index of 2.4.
  • one of the layers of silicon dioxide (SiO 2 ) is deposited, as the first innermost layer, directly on the metal film, whereas the other layers are arranged alternated above the first layer.
  • the thickness of the two layers of silicon dioxide is of around 85-86 nm.
  • the thickness of the two layers of niobium pentoxide is, on the other hand, of around 51-52 nm.
  • the layers of metal oxides which constitute the interference filter of the shield 1 according to the present invention are made by using a PVD sputtering apparatus, i.e. an apparatus, of the per se known type, which carries out the depositing of the layers by means of physical evaporation.
  • a PVD sputtering apparatus i.e. an apparatus, of the per se known type, which carries out the depositing of the layers by means of physical evaporation.
  • the reflectivity of the incident solar radiation on the shield in the visible spectrum is considerably increased, and consequently the phenomena of absorption and of re-emission in the infrared, which are responsible of the rising of the temperature inside of the double-glazing and therefore of the shield 1, are reduced.
  • Figure 2 compares the trend of the reflectivity of the fabric before and after the deposition of the interference filter, as a function of the wavelength of the incident radiation.
  • the curve A is relative to the fabric with interference filter
  • the curve B is relative to the fabric without interference filter, i.e. a fabric of the known and conventional type.
  • the presence of the interference filter - curve A - substantially increases the reflectivity of the fabric in the visible spectrum, defined by two broken vertical lines, with the advantages which have already been described.
  • Another important result achieved with the shield 1 according to the present invention consists of increasing the rigidity of the fabric constituting the shield following the depositing of the metal oxide layers which constitute the interference filter.

Landscapes

  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Laminated Bodies (AREA)
EP12171249.1A 2011-06-08 2012-06-08 Sichtschutz aus Gewebe für Dopelverglasung und dergleichen Withdrawn EP2532824A3 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT000328A ITBO20110328A1 (it) 2011-06-08 2011-06-08 Schermo in tessuto per sistemi vetrocamera e simili

Publications (2)

Publication Number Publication Date
EP2532824A2 true EP2532824A2 (de) 2012-12-12
EP2532824A3 EP2532824A3 (de) 2014-06-11

Family

ID=44554896

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12171249.1A Withdrawn EP2532824A3 (de) 2011-06-08 2012-06-08 Sichtschutz aus Gewebe für Dopelverglasung und dergleichen

Country Status (2)

Country Link
EP (1) EP2532824A3 (de)
IT (1) ITBO20110328A1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016112418A1 (de) * 2015-01-16 2016-07-21 Sattler Sun-Tex Gmbh Doppelverglasung mit innenliegendem sicht- oder blendschutz
EP3138988A1 (de) * 2015-09-03 2017-03-08 Saint-Gobain Glass France Verglasung mit einem verdunkelnden vorhang
IT202300003267A1 (it) * 2023-02-24 2024-08-24 Pellini Spa Contenitore refrigerante

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO802530L (no) * 1979-09-08 1981-03-09 Guenter Pusch Baneformet materiale for framstilling av isolerende rullegardiner, jalusier og liknende vindustildekninger
WO1983000356A1 (en) * 1981-07-23 1983-02-03 Ryan, Paul, Anthony Insulation material
US5316837A (en) * 1993-03-09 1994-05-31 Kimberly-Clark Corporation Stretchable metallized nonwoven web of non-elastomeric thermoplastic polymer fibers and process to make the same
JP3103598U (ja) * 2003-08-19 2004-08-19 和立聯合科技股▲ふん▼有限公司 静電気シールド用金属被覆繊維布帛
ITMI20031902A1 (it) * 2003-10-03 2005-04-04 Pellini Spa Sistema per la manovra di una tenda a telo inserita in una vetro-camera.
EP1876015B1 (de) * 2006-07-05 2017-02-01 Hueck Folien Ges.m.b.H Flammhemmender Sonnenschutz-, Blendschutz- und Verdunkelungsartikel

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016112418A1 (de) * 2015-01-16 2016-07-21 Sattler Sun-Tex Gmbh Doppelverglasung mit innenliegendem sicht- oder blendschutz
EP3138988A1 (de) * 2015-09-03 2017-03-08 Saint-Gobain Glass France Verglasung mit einem verdunkelnden vorhang
FR3040723A1 (fr) * 2015-09-03 2017-03-10 Saint Gobain Vitrage equipe d'un rideau occultant
IT202300003267A1 (it) * 2023-02-24 2024-08-24 Pellini Spa Contenitore refrigerante

Also Published As

Publication number Publication date
ITBO20110328A1 (it) 2012-12-09
EP2532824A3 (de) 2014-06-11

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