GB2227431A - Transparent roof for motor cars - Google Patents

Transparent roof for motor cars Download PDF

Info

Publication number
GB2227431A
GB2227431A GB8903584A GB8903584A GB2227431A GB 2227431 A GB2227431 A GB 2227431A GB 8903584 A GB8903584 A GB 8903584A GB 8903584 A GB8903584 A GB 8903584A GB 2227431 A GB2227431 A GB 2227431A
Authority
GB
United Kingdom
Prior art keywords
transparent
layer
transparent roof
roof according
energy
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
Application number
GB8903584A
Other versions
GB8903584D0 (en
GB2227431B (en
Inventor
Sebastiano Francesco
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.)
Societa Italiana Vetro SIV SpA
Original Assignee
Societa Italiana Vetro SIV 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 Societa Italiana Vetro SIV SpA filed Critical Societa Italiana Vetro SIV SpA
Publication of GB8903584D0 publication Critical patent/GB8903584D0/en
Publication of GB2227431A publication Critical patent/GB2227431A/en
Application granted granted Critical
Publication of GB2227431B publication Critical patent/GB2227431B/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • B32B27/40—Layered products comprising a layer of synthetic resin comprising polyurethanes
    • 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
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/10009—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets
    • B32B17/10018—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets comprising only one glass sheet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
    • B60J7/00—Non-fixed roofs; Roofs with movable panels, e.g. rotary sunroofs
    • B60J7/02—Non-fixed roofs; Roofs with movable panels, e.g. rotary sunroofs of sliding type, e.g. comprising guide shoes
    • B60J7/04—Non-fixed roofs; Roofs with movable panels, e.g. rotary sunroofs of sliding type, e.g. comprising guide shoes with rigid plate-like element or elements, e.g. open roofs with harmonica-type folding rigid panels
    • B60J7/043—Sunroofs e.g. sliding above the roof

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Laminated Bodies (AREA)
  • Surface Treatment Of Glass (AREA)

Abstract

A transparent roof for motorcars consisting of a sheet (1) of tempered glass forming a substrate with one or more filtering layers (3) showing a chess-board pattern and an anti-splintering plastic layer (2) formed by spraying and centrifugation of a polyurethane composition (Figure 1). <IMAGE>

Description

TRANSPARENT ROOF FOR MOTORCAR8 The present invention relates to a glass for motorcars which is particularly suited for use as a transparent roof of the motorcar itself. It is formed in overlaying relationship by a sheet of glass of whatever thickness, preferably tempered for safety reasons, one or more thin layers having the object of reducing the energy and light transmission, and a thin layer of transparent plastic material.
Transparent roofs for motorcars are well known from the state of the art.
Generally speaking, their size is such as to occupy only a part of the entire surface of the metal roof of the vehicle, and preferably that part situated above the front seats, but they can of course occupy larger surfaces of the roof.
Usually said roofs are formed by a sheet of glass, tempered for safety reasons, on which is overlaid a partially opaque layer obtained by means of serigraphy, and having the object of reducing the energy and light transmission, and/or a thin reflecting layer, deposited by pyrolysis or by cathodic spraying, which also has the function of further reducing the energy and light transmission.
A product thus described, however, shows the disadvantage that, although presenting a notable resistance to breakage, thanks to the temperihg of the glass, it does not protect the passengers on the seats beneath from flying splinters in the case of accidental breakage of the glass itself, nor, after breakage, does it prevent water from penetrating into the interior compartment and damaging the internal furnishings.
Object of the present invention is therefore to provide a transparent roof for motorcars being easier to make and having greater safety characteristics, eliminating the above mentioned disadvantages.
The transparent roof according to the present invention comprises a sheet of preferably tempered glass, one or more thin layers applied on the glass to reduce the energy and light transmission, and a layer of plastic material, preferably applied on the surface facing towards the interior compartment of the vehicle, obtained by direct polimerization on the substrate of a composition based on polyurethane chains which are intermeshed but not chemically linked, and the application of said composition according to a process of spraying and centrifugation, said composition and process being already known from the Italian patent No.
1160482 and from the Italian patent application No.
19459A86, both in the name of the same Applicant.
The thickness of the layer of transparent plastic is preferably from 100 micron to 1 mm.
Object of the present invention is therefore a transparent roof for motorcars consisting of a sheet of glass on which one or more thin layers are deposited, said layers having the function of reducing the energy and light transmission, characterized by the fact that it comprises, on the surface facing towards the interior compartment of the motorcar, a layer of transparent plastic material intimately connected to the substrate, having a thickness from 100 microns to lmm, said plastic layer being obtained by means of deposition, by spraying and centrifugation, of a composition based on polyurethane chains meshed together but not chemically linked, and successive polimerization of said composition directly on the substrate.
The invention will be better understood with reference to the enclosed figure 1, representing an embodiment of the invention, in which a transparent roof for motorcars is illustrated, formed by a sheet of glass 1, a partially opaque serigraphic layer 3 and a transparent plastic layer 2.
As it is necessary to guarantee adequate comfort to the passengers in the interior compartment, it is advisable that the energy and light transmission values of the transparent roof be reduced below 25% of the total of incident energy.
The partially opaque serigraphic layer 3 therefore is formed with transparent squares placed in a chequered or chessboard pattern with a side length less than 0,6 mm so as to permit an energy and light transmission lower than 10%.
A further lowering of the energy and light transmission can be obtained by using layers of plastic containing suitable coloured pigments.
A further embodiment of transparent roof for motorcars, falling within the scope of the present invention, is formed by: a sheet of glass of a thickness between 4 and 2 mm; a thin reflecting layer obtained by cathodic spraying of metal oxides; a layer of transparent plastic.
It has been found that the light transmission is reduced to as much as 10% while the energy transmission is reduced up to 7%.
It will be understood that the present invention can also be realized to fit various uses without falling out of the inventive concept thereof.

Claims (7)

1. Transparent roof for motorcars, consiting of a sheet of preferably tempered glass forming a glass substrate, and one or more thin layers which reduce the energy and light transmission, characterized in that it further comprises a layer of transparent plastic material intimately bonded to the glass substrate and applied to the surface facing towards the interior compartment of the vehicle to protect the passengers from accidental splinters or from infiltration of water following the breakage of the glass.
2. Transparent roof according to claim 1, in which the thickness of the transparent plastic material is from 100 micron to 1 mm.
3. Transparent roof according to claim 1 or 2, in which the transparent plastic layer is obtained by direct polimerization on the glass substrate of a composition comprising polyurethane chains meshed together, but not chemically linked.
4. Transparent roof according to any of the preceding claims, in which the transparent plastic layer is obtained by applying a polyurethane composition using a process of spraying and centrifugation.
5. Transparent roof according to any one of the preceding claims, in which the partially opaque serigraphic layer is formed with transparent squares having sides of less that 0,6mm, in a chequered or chess-board pattern on the glass substrate.
6. Transparent roof according to any one of the preceding claims, in which the layer of transparent plastic material is coloured by means of pigments for reduction of the energy and light transmission.
7. Transparent roof according to any one of the preceding claims, characterized by the fact that it has an energy and light transmission of less than 10%.
GB8903584A 1988-02-16 1989-02-16 Transparent roof for motorcars Expired - Lifetime GB2227431B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT3554488 1988-02-16

Publications (3)

Publication Number Publication Date
GB8903584D0 GB8903584D0 (en) 1989-04-05
GB2227431A true GB2227431A (en) 1990-08-01
GB2227431B GB2227431B (en) 1992-03-04

Family

ID=11241527

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8903584A Expired - Lifetime GB2227431B (en) 1988-02-16 1989-02-16 Transparent roof for motorcars

Country Status (5)

Country Link
DE (1) DE8901830U1 (en)
ES (1) ES2013022A6 (en)
FR (1) FR2630076B3 (en)
GB (1) GB2227431B (en)
IT (1) IT214066Z2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5466037A (en) * 1992-07-28 1995-11-14 Societa Italiana Vetro - Siv S.P.A. Movable transparent panel structure to close the roof of an automobile
EP1520889A1 (en) * 2003-08-29 2005-04-06 Safeglass S.L. Use of resins for application on the surfaces of glass or similar objects
US6908147B2 (en) * 2002-02-18 2005-06-21 Webasto Vehicle Systems International Gmbh Glass cover with shatterproofing film
US7086693B1 (en) * 2005-10-11 2006-08-08 Classis Design Concepts, Llc Glass roof assembly and method of retrofitting a vehicle

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4006756A1 (en) * 1990-03-03 1991-09-05 Webasto Ag Fahrzeugtechnik TRANSPARENT DISC FOR MOTOR VEHICLES
DE4311049C1 (en) * 1993-04-03 1994-06-01 Rockwell Golde Gmbh Vehicle roof with glass cover and sun visor - uses silk screen printing to lay down lattice sun visor adjustable by closure plate movement
DE10211654B4 (en) * 2002-03-15 2004-02-05 Webasto Vehicle Systems International Gmbh Transparent roof element of a vehicle

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB842886A (en) * 1956-03-31 1960-07-27 Heraeus Gmbh W C Improvements in or relating to heat insulated splinter-proof laminated glass
GB2004500A (en) * 1977-09-06 1979-04-04 Mannheim J Decorated safety glass and a method for the preparation thereof
US4652494A (en) * 1983-07-11 1987-03-24 Saint-Gobain Vitrage Bilayer laminate and preformed sheet for use therein
EP0258063A2 (en) * 1986-08-28 1988-03-02 Bridgestone Corporation Impact-resistant anti-lacerative window glass units

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB842886A (en) * 1956-03-31 1960-07-27 Heraeus Gmbh W C Improvements in or relating to heat insulated splinter-proof laminated glass
GB2004500A (en) * 1977-09-06 1979-04-04 Mannheim J Decorated safety glass and a method for the preparation thereof
US4652494A (en) * 1983-07-11 1987-03-24 Saint-Gobain Vitrage Bilayer laminate and preformed sheet for use therein
US4671838A (en) * 1983-07-11 1987-06-09 Saint-Gobain Vitrage Preparation of bilayer laminate and preformed sheet for use therein
EP0258063A2 (en) * 1986-08-28 1988-03-02 Bridgestone Corporation Impact-resistant anti-lacerative window glass units

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5466037A (en) * 1992-07-28 1995-11-14 Societa Italiana Vetro - Siv S.P.A. Movable transparent panel structure to close the roof of an automobile
US6908147B2 (en) * 2002-02-18 2005-06-21 Webasto Vehicle Systems International Gmbh Glass cover with shatterproofing film
EP1520889A1 (en) * 2003-08-29 2005-04-06 Safeglass S.L. Use of resins for application on the surfaces of glass or similar objects
US7086693B1 (en) * 2005-10-11 2006-08-08 Classis Design Concepts, Llc Glass roof assembly and method of retrofitting a vehicle

Also Published As

Publication number Publication date
FR2630076B3 (en) 1990-03-30
GB8903584D0 (en) 1989-04-05
ES2013022A6 (en) 1990-04-16
DE8901830U1 (en) 1989-03-30
FR2630076A3 (en) 1989-10-20
IT8835544V0 (en) 1988-02-16
GB2227431B (en) 1992-03-04
IT214066Z2 (en) 1990-03-05

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20000216