A first layer that is a peelable film includes a bonding sublayer and a sealing sublayer. The bonding sublayer includes a non-neutralized ethylene acid copolymer, The scaling sublayer includes a first polyethylene and an ethylene acid copolymer or blends thereof. The first layer is adapted to withstand exposure to sterilization processes and the first layer can be essentially free of blistering.

An object of the present invention is to provide a thin volume hologram sheet to be embedded sufficiently resistant to a mechanical stress such as a stress including a tensile stress, a shear stress and a compression stress at the time of processing even under a heating condition, a forgery prevention paper and a card using the same. The object is achieved by providing a volume hologram sheet to be embedded comprising a volume hologram layer, and a substrate disposed only on one side surface of the volume hologram layer using an adhesion means, wherein a peeling strength of the volume hologram layer and the substrate is 25 gf/25 mm or more.

A composition is described comprising semicrystalline polylactic acid polymer; polyvinyl acetate polymer having a glass transition temperature (Tg) of at least 25° C.; plasticizer; and optionally amorphous polylactic acid polymer. In another embodiment the composition further comprises nucleating agent. Also described are films comprising the composition as well as articles, such as a tape or sheet, comprising the film described herein and a layer of pressure sensitive adhesive disposed on the film.

A glazing capable of gradient opacity includes a first glass substrate (110) and a second glass substrate (110), a first interlayer (214) and a second interlayer (116), provided between the first glass substrate and the second glass substrate, and a switchable film (130) provided between the first interlayer and the second interlayer. The switchable film includes a switchable material layer (220) having first and second surfaces (SF.sub.1, SF.sub.2) opposite each other, wherein the switchable material layer (220) has an uneven effective thickness. A first conductive layer (226) and a second conductive layer (128) sandwich the switchable material layer (220), and a first polymer film (222) and a second polymer film (124) sandwich the switchable material layer and the first and second conductive layers.

A glazing capable of gradient opacity includes a first glass substrate (110) and a second glass substrate (110), a first interlayer (214) and a second interlayer (116), provided between the first glass substrate and the second glass substrate, and a switchable film (130) provided between the first interlayer and the second interlayer. The switchable film includes a switchable material layer (220) having first and second surfaces (SF.sub.1, SF.sub.2) opposite each other, wherein the switchable material layer (220) has an uneven effective thickness. A first conductive layer (226) and a second conductive layer (128) sandwich the switchable material layer (220), and a first polymer film (222) and a second polymer film (124) sandwich the switchable material layer and the first and second conductive layers.

A laminated glass 1 includes a resin plate 2 as a core material, a first glass sheet 4 disposed on one surface side of the resin plate 2 via a first adhesive layer 3, and a second glass sheet 6 disposed on the other surface side of the resin plate 2 via a second adhesive layer 5. A heat reflective film 7 is disposed in the first adhesive layer 3, and a heat absorbing film 8 is disposed in the second adhesive layer 5, the heat absorbing film 8 functioning as a light absorbing member capable of absorbing a portion of incident light. The heat reflective film 7 is disposed closer to the first glass sheet 4 than the heat absorbing film 8 is.

A laminated glass 1 includes a resin plate 2 as a core material, a first glass sheet 4 disposed on one surface side of the resin plate 2 via a first adhesive layer 3, and a second glass sheet 6 disposed on the other surface side of the resin plate 2 via a second adhesive layer 5. A heat reflective film 7 is disposed in the first adhesive layer 3, and a heat absorbing film 8 is disposed in the second adhesive layer 5, the heat absorbing film 8 functioning as a light absorbing member capable of absorbing a portion of incident light. The heat reflective film 7 is disposed closer to the first glass sheet 4 than the heat absorbing film 8 is.

Heat sink and method of manufacturing a graphene based heat sink, the method comprising: providing a first and second graphene film; arranging a layer of nanoparticles on a surface of the first and second graphene film to improve an adhesion strength between the graphene films; attaching the second graphene film to the first graphene film by means of an adhesive and the layer of nanoparticles; forming a laminated graphene film comprising a number of graphene film layers by repeating the steps, wherein the laminated graphene film is formed to have an anisotropic thermal conductivity; assembling a plurality of laminated graphene films by applying pressure and heat to cure the adhesive to form a graphene block; and removing selected portions of the graphene block to form a heat sink comprising fins extending from a base plate of the heat sink.

Heat sink and method of manufacturing a graphene based heat sink, the method comprising: providing a first and second graphene film; arranging a layer of nanoparticles on a surface of the first and second graphene film to improve an adhesion strength between the graphene films; attaching the second graphene film to the first graphene film by means of an adhesive and the layer of nanoparticles; forming a laminated graphene film comprising a number of graphene film layers by repeating the steps, wherein the laminated graphene film is formed to have an anisotropic thermal conductivity; assembling a plurality of laminated graphene films by applying pressure and heat to cure the adhesive to form a graphene block; and removing selected portions of the graphene block to form a heat sink comprising fins extending from a base plate of the heat sink.

An object of the present invention is to provide a thin volume hologram sheet to be embedded sufficiently resistant to a mechanical stress such as a stress including a tensile stress, a shear stress and a compression stress at the time of processing even under a heating condition, a forgery prevention paper and a card using the same. The object is achieved by providing a volume hologram sheet to be embedded comprising a volume hologram layer, and a substrate disposed only on one side surface of the volume hologram layer using an adhesion means, wherein a peeling strength of the volume hologram layer and the substrate is 25 gf/25 mm or more.