The present invention relates to a resin composition, comprising: a modified vinyl acetal resin which comprises 20 to 80 mol % of ethylene units and 4 to 76 mol % of vinyl alcohol units based on all monomer units constituting the resin, and has an acetalization degree of 5 to 80 mol %; and an alkali metal salt and/or an alkaline earth metal salt of a strong acid, wherein a total content of the alkali metal salt and/or the alkaline earth metal salt of the strong acid is 0.0005 to 0.06 part by mass with respect to 100 parts by mass of the modified vinyl acetal resin.

A polymer film and laminated glass manufactured using the polymer film. The polymer film includes a first and second layer, and a third layer disposed between the first and second layers, and the two surfaces of the third layer are in contact with the first and second layers, respectively. The surface of the first layer that is not in contact with the third layer is a first surface, and the surface of the second layer not in contact with the third layer is a second surface, wherein the first surface has a void volume (Vv) value at a material ratio of 10% ranging from 3 μm.sup.3/μm.sup.2 to 30 μm.sup.3/μm.sup.2 and a dale void volume (Vvv) at a material ratio of 80% less than 2 μm.sup.3/μm.sup.2, and the ratio of the maximum pit height (Sv) of the first surface to the thickness of the first layer is 0.2 or less.

A composite glass pane that contains two glass panes or two polymer panes or one glass pane and one polymer pane and has at least one polymer film bonded therebetween, wherein a first type of polymer film having a first stiffness is arranged in a first, larger areal region of the composite glass pane and a second type of polymer film having a second, higher stiffness than the first polymer film is arranged in at least one second areal region.

Provided is an interlayer film for laminated glass capable of enhancing the sound insulating property of laminated glass over a wide resonance frequency region. An interlayer film for laminated glass according to the present invention has a one-layer or two or more-layer structure, and when the interlayer film is arranged between two sheets of clear float glass having a width of 25 mm, a length of 300 mm and a thickness of 2 mm to obtain a laminated glass X, a loss factor at a second resonance frequency, a loss factor at a third resonance frequency, and a loss factor at a fourth resonance frequency measured by a central exciting method at 20° C. in mechanical impedance measurement in accordance with ISO16940 of the laminated glass X are respectively 0.4 or more.

The present invention provides a windshield on which an information acquisition device that acquires information from outside of a vehicle by emitting and/or receiving light is disposable, the windshield including: a glass plate; and a heating wire that is provided on the glass plate and to which a current is applied. The glass plate includes at least one information acquisition region that faces the information acquisition device and through which the light passes, the heating wire includes a plurality of linear main body portions that pass through at least the information acquisition region and a linear linking portion for linking the plurality of main body portions, and at least one of the linking portions includes a heat generation suppressing means for suppressing heat generation when a current is applied.

A method for making a laminated glazing panel is described. A bolt having a head portion and a stem portion extending therefrom is positioned in a hole in a sheet of glazing material so that a first surface of the head portion is faces in the direction of a first major surface of the sheet of glazing material and the stem portion extends beyond a second major surface of the sheet of glazing material. A sheet of adhesive interlayer material is positioned on the first major surface of the sheet of glazing material to cover the first surface of the head portion. Suitable lamination conditions are used to laminate the sheet of adhesive interlayer material to the sheet of glazing material. During lamination, fluid trapped between the first surface of the head portion and the sheet of adhesive interlayer material is removed via a fluid pathway associated with the stem portion. Laminated glazing panels made using the method are also described.

A laminated glazing panel comprising first and second sheets of glazing material joined by an interlayer structure comprising a first sheet of adhesive interlayer material is described. Inboard of a peripheral edge of the first sheet of glazing material, the first sheet of glazing material has a hole therein. The laminated glazing panel further comprises a glazing fitting secured thereto, the glazing fitting comprising a head portion and an attachment feature. The head portion is positioned in the hole such that a first surface thereof faces the first sheet of adhesive interlayer material. Some of the first sheet of adhesive interlayer material is in the hole and is operatively associated with the first attachment feature thereby attaching the glazing fitting to the first sheet of adhesive interlayer material. Suitable glazing fittings and methods of making such laminated glazing panels are also described.

Embodiment relates to film for bonding, and a light-transmitting laminate including the same and the like, a film for bonding comprising an embossed surface, wherein the embossed surface has an A2/A1 value of 1 or less are disclosed. A film for bonding have improved in deairing stability during formation of a light transmitting laminate, an edge sealing characteristic, and the like by controlling characteristics of a embossed surface.

A method for laminating an assembled sandwich structure consisting of a functional part (4) and one glass article (5) separated from an outer surface of the functional part by a laminating film (6) by heating with electromagnetic radiation in a vacuum is described. In the method equal temperatures of all sandwich components are provided by selection of the optimal radiation frequencies. The optimal vacuum level is provided following the laminating film temperature.

The use of camera-based safety systems is growing at a rapid rate in modern automobiles. At the same time, windshields, where many of the cameras are mounted, are becoming larger and more complex in shape. As the industry moves towards vehicles with full autonomous capability, the number of cameras required and the resolution of the cameras are both increasing. However, the optical quality of the windshield is less than optimal. One of the problems is caused by the typical black enamel frit that is printed on the glass, prior to heating and bending, to hide or obscure the camera hardware. The abrupt thermal gradients during bending, caused by the heat absorbing black frit, result in a high level of distortion in the camera field of view. The object of this invention is to provide laminated automotive glazing having an obscuration area produced by creating an obscuration after heating and bending the glass by removing a portion of the plastic interlayer glass in or near the camera field of view (camera obscuration) or/and in the edges of the windshield (black band) and replacing it with an inlay made of a substantially opaque plastic or other suitable material in or near the camera field of view (camera obscuration) or/and in the edges of the windshield (black band) rather than printing and firing an enamel frit on the glass. This results in a laminate having superior optical quality, higher strength and a lower probability of breakage as compared to a laminate with a black enamel frit obscuration.