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.

The object of the present invention is to provide an alkali-dispersible hot melt pressure-sensitive adhesive which (i) has a high alkali-dispersibility, (ii) is excellent in strength to retain a label, (iii) hardly causes an adhesive residue problem and (iv) is capable of reducing stringing. The present invention relates to an alkali-dispersible hot melt pressure-sensitive adhesive comprising: (A) a thermoplastic block copolymer which is a copolymer of a vinyl-based aromatic hydrocarbon and a conjugated diene compound, (B) a tackifier resin and (C) at least one selected from the group consisting of a fatty acid and a derivative thereof, wherein the component (C) comprises (C1) a fatty acid derivative having a melting point of 40° C. or more.

A brittle adhesive sheet includes a film base material, and an adhesive layer provided at a first surface side of the film base material, wherein the film base material has a film base material main body formed of a polystyrene-based resin and a print receptive layer provided at a second surface side, opposite to a side of the film base material where the adhesive layer is provided, and the print receptive layer includes a polyester-based resin or an acrylic-based resin.

The invention relates to a peel detection label that is a laminate including a support, a pattern layer formed in a part of the surface of the support, and a pressure-sensitive adhesive laminate having at least a low modulus layer (X), a high modulus layer (Y) and a pressure-sensitive adhesive layer (Z) in that order, in which the low modulus layer (X) has an n-layered structure (where n is an integer of 1 to 10) having a surface in contact with the support and the pattern layer and a surface in contact with the high modulus layer (Y), and the low modulus layer (X) satisfies a specific thickness-average shear storage elastic modulus.

The present application relates to a vulcanization label that can be used to label tires. The label comprises a facestock layer, a first primer layer, a second primer layer comprising a zinc oxide, and a reactive adhesive layer. The two primer layers have different compositions. The second primer layer has a coating weight that is greater than 3 gsm. At least a portion of the second primer is in contact with at least a portion of the reactive adhesive layer.

The invention relates to a peel detection label that is a laminate including a support, a pattern layer formed in a part of the surface of the support, and a pressure-sensitive adhesive laminate having at least a low modulus layer (X), a high modulus layer (Y) and a pressure-sensitive adhesive layer (Z) in that order, in which the low modulus layer (X) has a surface in contact with the support and the pattern layer and a surface in contact with the high modulus layer (Y), and satisfies the following requirement (1):

Requirement (1): when the pressure-sensitive adhesive layer (Z) of the peel detection label is attached to an adherend and then the peel detection label is peeled off from the adherend, the maximum vertical tensile stress applied to an element of the low modulus layer (X) that is located closest to the support is 0.19 MPa or more when analyzed by a finite element method using Abaqus.

Labels and multilayer adhesive assemblies and laminates are described that contain one or more tamper indicating layers. After adhering to a surface of interest, upon attempted removal of the label from the surface or other manipulation of the label, the label separates along the tamper indicating layer. One or both exposed faces of the separated tamper indicating layer may include tamper indicating and or authenticity indicating provisions such as indicia to further provide evidence of attempted tampering.

An easy tear sticker assembly with a pattern layer includes a base and plural easy tear sticker units. Each easy tear sticker unit includes plural easy tear stickers stacked on top of the other and disposed on a setting surface of the base. Particularly, the design of this disclosure provides a spacing between any two adjacent easy tear sticker units, so that when a user tears an easy tear sticker from any easy tear sticker unit, the easy tear sticker on the adjacent easy tear sticker unit will not be affected, so that this disclosure allows users to tear the easy tear sticker with the pattern layer easily and has the advantages of free of degumming and free of any early show of the sticky mark. In addition, the easy tear sticker of this disclosure provides a confidential effect and/or an anti-counterfeiting effect through different forms.

Brittle acrylic films are made from impact-modified polyalkyl (meth)acrylate and are useful in forgery prevention labels containing the same. The films can be advantageously prepared by extrusion and, depending on the desired purpose, can be designed to be translucent or entirely non-transparent e.g. white. Ideally, the brittle acrylic films and the forgery prevention labels have no intended break points such as slits, perforation etc.

A cutting plotter film with anti-counterfeit effect includes: a heat-resistant layer; a stripe-embossed layer having releasing property and bonded on the heat-resistant layer, the stripe-embossed layer being formed with a stripe-embossed surface; a character film layer disposed on the stripe-embossed surface of the stripe-embossed layer, having a contact surface in contact with the stripe-embossed surface, the contact surface being formed with anti-counterfeit stripes; and a heat bonding layer disposed on the character film layer. Figures/characters are cut/engraved on the character film layer and the heat bonding layer. The cutting plotter film is placed on a product and heated to transfer and adhere the figures/characters onto the product.