An optical film includes: a fine recess-protrusion layer having a recess-protrusion pattern, formed on a substrate film; and a fine structure body formed on the fine recess-protrusion layer. The optical film is pressed by a light guide transparent to light against one surface of an adherend applied with a photocurable resin, and light is transmitted through the light guide to cure the photocurable resin with the optical film being pressed by the light guide, thereby forming the fine structure body on the adherend.

The disclosure refers to a laminated glazing having a connector which includes an electrical bridging means and an optional reinforcement making failure unlikely.

The invention provides a PVB interlayer sheet having a surface topography on at least one surface which is characterized as having a relatively low profile and a controlled, collapsible surface roughness profile (upon exposure to heat) having a population of significantly more surface peaks than negative peaks (valleys) in certain embodiments and slightly more distant peak spacing than is generally found in embossed PVB interlayers. The PVB interlayer sheets of the invention thus provide very good initial contact and tack of PVB to a glass surface, while leaving very little residual air behind after a first nip in a traditional glass lamination process when compared to other surface designs. The PVB interlayer sheets of the invention also exhibit a wide deairing window which affords greater tolerance of temperature and process variations.

A wedge shaped interlayer film for laminated glass having good sound insulation performance and having five or more resin layers, including: a first resin layer having a glass transition temperature of 15 C. or higher, a second resin layer having a glass transition temperature of lower than 15 C., a first edge, and a second edge opposite the first edge. A thickness of the second edge is larger than the thickness of the first edge, and when a percentage of a total thickness of second resin layer with respect to the total thickness of all the resin layers is taken to be a layer percentage A (%), and a distance from the first to second edges is taken to be X, the interlayer film has a region of 0.5X in which a difference between a maximum value and a minimum value of the layer percentage A is 10% or less.

An interlayer film for laminated glass of the present invention includes a functional film and a first polymer layer that is provided on one front surface of the functional film and constitutes an outermost layer, wherein an outer surface of the first polymer layer has a surface roughness (Rzjis94) of 1 m or more and 100 m or less. According to the present invention, an interlayer film for laminated glass that has excellent degassing properties during the production of laminated glass and can suppress optical distortion can be provided.