A roll includes a core having a tubular shape and a laminate wound around the core. The laminate includes a process film, a surface coat layer formed from a fluorine resin, a substrate layer, an adhesive layer, and a release liner formed from polyethylene terephthalate (PET) in this order in a laminating direction. The process film is formed from at least of polyethylene terephthalate (PET), polyolefin, and polyvinyl chloride (PVC), and is thinner than the release liner.

Provided are an oxygen barrier film, a food wrapper including the same, and a method of preparing the oxygen barrier film. The oxygen barrier film may include: a base layer; and an organic/inorganic hybrid layer located on the base layer and including a natural hydrogel and a silane coupling agent.

The present invention relates to a release liner, an adhesive article comprising the same, a process for producing the release liner, and a process for decorating an object using the adhesive article. According to an embodiment, the release liner comprises a carrier substrate (10), a thermoplastic polymer layer (20) applied on one side of the carrier substrate (10), and a release layer (30) applied on the thermoplastic polymer layer (20) on the side opposite to the carrier substrate (10). The thermoplastic polymer layer (20) and the release layer (30) include a network of ridges (25), which result in elevations of the surface of the release liner on the side of the release layer. The surface on the side of the release layer (30) has a roughness at least between the ridges (25), such that it has a plurality of pits (1, 2, 3). The average number of pits (1, 2, 3) per an area of 3.4 mm.sup.2 of the plan view of the release liner surface is at least 50 as determined with a confocal 3D laser scanning microscope at a magnification of 100. The pits (1, 2, 3) extend at least to a level of 10.0 m above the deepest point of the deepest pit (1) within said area of 3.4 mm.sup.2.

A release liner that can be produced in a few method steps (e.g., a coextrusion step), exhibits very good interlaminate adhesion, and has little tendency to deform and deviate from planarity. The release liner is for use on pressure-sensitive adhesives and comprises: a layer system (POL) comprising one or more layers and comprising in each layer, based in each case on the total weight of the layer, a total of at least 80% by weight of one or more polyolefins, where each layer of the layer system (POL) comprises polypropylene; at least one layer (PEL) comprising, based on the total weight of the layer (PEL), at least 80% by weight of polyethylene; and an anchoring layer that connects each layer (PEL) to the layer system (POL).

The invention relates to a separating film based on polyolefins or ethylene copolymers with a content of organic and optionally inorganic pigment and at least one UV stabilizer. The separating film has a transmission percentage between 5 and 20% in the range from 400 to 700 nm and a transmission percentage of <2% in the range from 300 to 500 nm. Such separating films have the advantage that marking regions applied onto membranes which can be found below the separating film remain detectable, and adhesives which can be found below the separating film are effectively protected from UV light and premature aging by the addition of inorganic and organic pigments and UV stabilizers. The invention further relates to composite structures of corresponding separating films and adhesives, to water-tight membranes with coatings made of adhesive and separating films, and to uses of corresponding membranes for sealing structures against water.

The present application is directed to an adhesive article comprising a pressure sensitive adhesive layer and a release layer in contact with the pressure sensitive adhesive layer. The release layer comprises a polyolefin block copolymer. Generally, the polyolefin block copolymer has a density of no greater than 0.9 g/cc.

A conductive film includes an elongated release film and a plurality of conductive adhesive film pieces provided on the release film. Then, the plurality of adhesive film pieces are arranged in a longitudinal direction X of the release film. For this reason, the adhesive film piece can be set to an arbitrary shape. Accordingly, it is possible to attach the adhesive film piece to adhesive surfaces having various shapes and to efficiently use the adhesive film piece.

A stretchable multi-layer assembly for transfer-printing of an associated curved object includes a stretchable carrier which defines a first outer surface of the assembly. A stretchable image is supported on the carrier. The multi-layer assembly includes an adhesive second outer surface defined by at least one of the stretchable image and an adhesive layer which is in contact with the image layer. The carrier and the stretchable image are penetrable to radiation of a wavelength which is able to cure the adhesive second outer surface for securing the assembly to the associated object.

Provided is a laminate sheet in which a first sheet, a PSA layer and a second sheet are laminated in this order. Of the first and second sheets, at least one is a release liner having a release face on the side facing the PSA layer. The PSA layer has a thickness of 200 m or greater. The first sheet has a tensile modulus of 1000 MPa or greater and the second sheet has a tensile modulus of 500 MPa or less.

Methods of forming laminating adhesive articles include providing a multi-layer article, an embossing tool with a structured surface, and a support surface tool. The multi-layer articles include a substrate, an adhesive layer, and a liner or may just include an adhesive layer and a liner. The multi-layer article is placed between the structured surface of the embossing tool and the support surface tool. The embossing tool is pressed against the liner and the support surface tool is simultaneously pressed against the substrate by applying pressure or a combination of pressure and heat. The pressing causes the structures on the surface of the embossing tool to distort the liner and the adhesive layer and the support surface tool modifies the surface of the substrate. The distortion in the liner is retained upon release of the applied pressure. Upon removal of the liner from the adhesive layer, the structures on the adhesive layer are unstable, but do not immediately collapse.