In order to increase the security of value or security documents 100, a multi-luminescent security element 400 is provided which contains at least one first luminescence means 510 and at least one second luminescence means 520. The first luminescence means 510 can be excited under first excitation conditions Sp-1 for the purpose of luminescence, and the second luminescence means 520 can be excited under second excitation conditions Sp-2 for the purpose of luminescence, said second excitation conditions Sp-2 differing from the first excitation conditions Sp-1. The multi-luminescent security element 400 is additionally equipped with at least one absorber means 600 which prevents an excitation of the at least one first luminescence means 510 under the second excitation conditions Sp-2 for the purpose of luminescence.

In order to increase the security of value or security documents 100, a multi-luminescent security element 400 is provided which contains at least one first luminescence means 510 and at least one second luminescence means 520. The first luminescence means 510 can be excited under first excitation conditions Sp-1 for the purpose of luminescence, and the second luminescence means 520 can be excited under second excitation conditions Sp-2 for the purpose of luminescence, said second excitation conditions Sp-2 differing from the first excitation conditions Sp-1. The multi-luminescent security element 400 is additionally equipped with at least one absorber means 600 which prevents an excitation of the at least one first luminescence means 510 under the second excitation conditions Sp-2 for the purpose of luminescence.

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.

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.

This disclosure relates to improved packaging materials containing oxidized cellulose. More particularly, this disclosure relates to improved packaging materials containing oxidized cellulose exhibiting one or more of improved odor control and/or improved antimicrobial properties. This disclosure further relates to the use of oxidized cellulose in packaging materials as an anti-counterfeiting agent, and methods of testing for the same.

This disclosure relates to improved packaging materials containing oxidized cellulose. More particularly, this disclosure relates to improved packaging materials containing oxidized cellulose exhibiting one or more of improved odor control and/or improved antimicrobial properties. This disclosure further relates to the use of oxidized cellulose in packaging materials as an anti-counterfeiting agent, and methods of testing for the same.

A layer-structure includes at least a base layer with a top surface and a top layer, wherein the top layer is arranged above the base layer in a height direction, wherein a first color section is partially provided in and/or on the top surface of the base layer, the first color section and the top surface of the base layer having a luminance contrast, wherein the luminance contrast, defined as Weber contrast, has a value that is at least 0.20, and wherein the first color section and the top surface of the base layer are covered by the top layer, so that a watermark visual appearance is provided.

A security device (100, 600, 700, 1000, 1050) includes arrangements of image icons (110a, 110b, 615, 715, 1020), arrangements of refractive image icon focusing elements (120, 605, 705, 1010) and a sealing layer (125, 600, 1005), wherein the arrangements of refractive image icon focusing elements is disposed above the arrangements of image icons such that a portion of the arrangements of refractive image icon focusing elements projects a synthetic image, such that the arrangements of refractive image icon focusing elements contact the sealing layer along a non-planar boundary. Further, at least one of the arrangements of refractive image icon focusing elements and the sealing layer comprises an organic resin mixture having a first refractive index, and at least one of the arrangements of refractive image icon focusing elements and the sealing layer comprises a low-refractive index material, the low-refractive index material having a second refractive index.

A spectrally responsive transfer system, comprising a taggant system comprising taggants exhibiting spectral characteristics in response to at least one illumination; a spectral code associated with the spectral characteristics; a coded transfer film releasably supported on a carrier allowing one or more portions of the transfer film to be selectively transferred from the carrier to a substrate to form spectrally coded indicia on the substrate; the transfer film comprising a spectral ink layer incorporating the taggant system and releasably coupled to the carrier; the transfer film also incorporating a metal foil layer over the spectral ink layer such that the metal foil layer overlies the spectral ink layer and such that the metal foil layer underlies the at least one spectral ink layer when the one or more, selectively transferred portions of the transfer film are transferred from the carrier onto the substrate.

Electroconductive paper structure with cellulosic fibrous materials and electroconductive fibers, wherein the electroconductive paper structure has embedded therein a continuous, electroconductive thread for contacting the electroconductive paper structure from one end to the opposite end of the paper structure.