Abstract: A pressure-sensitive adhesive label for HDD is a pressure-sensitive adhesive label that has an information display function and can reduce the sound generated when a hard disk drive is driven by being pasted to the external surface of the case of the hard disk drive. The pressure-sensitive adhesive label for HDD includes: a substrate layer composed of a metallic foil; a rust-proof layer covering the major surface of the substrate layer; an information display layer, on the surface of which printing can be performed, provided on one of the major surfaces of a laminated body made of the substrate layer and the rust-proof layer; and a pressure-sensitive adhesive layer provided on the other major surface of the laminated body.

Abstract: A pressure-sensitive adhesive product contains a substrate having formed on at least one surface thereof a pressure-sensitive adhesive layer, wherein the substrate is formed from a styrene-based resin composition and the pressure-sensitive adhesive layer is formed from an acrylic pressure-sensitive adhesive containing an acrylic polymer, a liquid paraffin, and a rosin-based tackifying resin. In the acrylic pressure-sensitive adhesive, the ratio of the liquid paraffin is preferably 6 to 50 parts by weight based on 100 parts by weight of the acrylic polymer and the ratio of the rosin-based tackifying resin is preferably 1 to 30 parts by weight based on 100 parts by weight of the acrylic polymer. The liquid paraffin may have a number-average molecular weight of 300 to 500 and may have a dynamic viscosity at 37.8° C. of 6 to 80 mm2/second.

Abstract: The present invention relates to a laser marking label for forming patterns by a process including the step of selectively destroying a recording layer with a laser beam and exposing lower layers, wherein the laser marking label contains at least a recording layer, a backing layer, a ground layer, a shielding layer, and an adhesive layer, in this order, wherein each of the layers is directly or indirectly laminated. According to the laser marking label of the present invention, patterns of a workpiece or an opening part can be covered for the designing property and prevention of erroneous operation of an optical sensor, and the label can also serve as a display, in other words, excellent shielding ability in both line image portions and non-line image portions can be provided. Also at the same time, a display of white line images on a black background, sufficient durability and sufficient resolution can be realized.

Abstract: A printing apparatus includes a plate cylinder having a relief plate mounted on at least a part of an outer periphery of the plate cylinder and being operable to be rotationally driven about a shaft center, and an impression cylinder having a rigid outer periphery and being operable to be rotationally driven about a shaft center parallel to the shaft center of the plate cylinder. The impression cylinder is adapted to be brought into pressure contact with the relief plate via a sheet-like print object fed between the plate cylinder and the impression cylinder. A cushioning sheet is attachable to and detachable from the outer periphery of the impression cylinder. The cushioning sheet is elastically deformable when being brought into pressure contact with the relief plate on the plate cylinder via the print object. The cushioning sheet is restorable when being separated from the relief plate on the plate cylinder.

Abstract: The pressure-sensitive adhesive product has a constitution wherein a pressure-sensitive adhesive layer is formed on at least one surface of a substrate, the substrate being formed from a resin composition containing an acrylonitrile-styrene copolymer and an acrylonitrile-styrene-acrylic rubber copolymer as main components and the weight ratio of the acrylonitrile-styrene copolymer to the acrylonitrile-styrene-acrylic rubber copolymer being 90/10 to 20/80. The above resin composition preferably has a form where the acrylonitrile-styrene-acrylic rubber copolymer is dispersed in the acrylonitrile-styrene copolymer.

Abstract: A pressure-sensitive adhesive product contains a substrate having formed on at least one surface thereof a pressure-sensitive adhesive layer, wherein the substrate is formed from a styrene-based resin composition and the pressure-sensitive adhesive layer is formed from an acrylic pressure-sensitive adhesive containing an acrylic polymer, a liquid paraffin, and a rosin-based tackifying resin. In the acrylic pressure-sensitive adhesive, the ratio of the liquid paraffin is preferably 6 to 50 parts by weight based on 100 parts by weight of the acrylic polymer and the ratio of the rosin-based tackifying resin is preferably 1 to 30 parts by weight based on 100 parts by weight of the acrylic polymer. The liquid paraffin may have a number-average molecular weight of 300 to 500 and may have a dynamic viscosity at 37.8° C. of 6 to 80 mm2/second.

Abstract: A process includes (i) the steps of adhering a pressure-sensitive adhesive layer supported on a base material to a release layer containing a mixture of a polyethylene and an ethylene/&agr;-olefin copolymer and aging the resultant structure at 40 to 75° C. for 6 hours or more or (ii) the steps of adhering a pressure-sensitive adhesive layer supported on a base material to a release layer containing a linear ethylene-based resin in which the content of components eluted at 30° C. or lower measured by the temperature rising elution fractionation method is 3 to 30 wt % and aging the resultant structure at 55 to 75° C. for 6 hours or more, to thereby regulate the pressure-sensitive adhesive layer so as to have a peel force of 0.5 to 5 N/50 mm when peeled from the release layer at an angle of 180° and a rate of 2 m/min together with the support base material.

Abstract: A pressure-sensitive adhesive identification label which involves little outgassing from a volatile silicone component, exhibits antistatic properties and is useful for application to a hard disk drive and its components comprises a substrate having a printable surface on one side thereof, a pressure-sensitive adhesive layer provided on the other side of the substrate, and an electrically conductive layer provided between the printable surface and the surface of the pressure-sensitive adhesive layer and has a volatile silicone component outgas level of 5 ng/cm2 or less, with the conductive layer being at least one layer selected from an interlayer of the substrate, an interlayer of the pressure-sensitive adhesive layer, and a layer between the substrate and the pressure-sensitive adhesive layer, and being preferably substantially free from a halogen compound and/or a tin compound.

Abstract: A process includes (i) the steps of adhering a pressure-sensitive adhesive layer supported on a base material to a release layer containing a mixture of a polyethylene and an ethylene/&agr;-olefin copolymer and aging the resultant structure at 40 to 75° C. for 6 hours or more or (ii) the steps of adhering a pressure-sensitive adhesive layer supported on a base material to a release layer containing a linear ethylene-based resin in which the content of components eluted at 30° C. or lower measured by the temperature rising elution fractionation method is 3 to 30 wt % and aging the resultant structure at 55 to 75° C. for 6 hours or more, to thereby regulate the pressure-sensitive adhesive layer so as to have a peel force of 0.5 to 5 N/50 mm when peeled from the release layer at an angle of 180° and a rate of 2 m/min together with the support base material.

Abstract: A method is described for preparing labels from blank stock material comprising printing on demand label information onto a substrate which has a pressure sensitive layer on one surface having relatively low adhesion to the opposite surface of the substrate to be printed and which has been rolled so that the adhesive layer adheres to the surface of the substrate to be printed.

Abstract: A peel-off developable pattern sheet comprising a transparent flexible substrate having thereon a pattern comprising a photopolymerizable color image-forming material layer and a process for producing a monochromatic or multi-color patterned display element by making use of the pattern sheet(s) are disclosed. A patterned display element can be produced in a continuous manner in an organic solvent-free working environment. The formed pattern has excellent sharpness and well-controlled surface properties.