Abstract: The present invention provides a sealing sheet mainly composed of an adhesive sheet composed of a core film having a water vapor transmission rate of less than 7.5 g/100 sq.

Abstract: A pressure-sensitive adhesive composition, for producing a pressure-sensitive adhesive layer that forms a pressure-sensitive adhesive sheet according to an aspect of the present invention, includes: a pressure-sensitive adhesive composite; a bubble; and a surfactant including a polymer that is formed by both a fluorine monomer and a non-fluorine ethylenically polymerizable monomer that is polymerizable with the fluorine monomer and whose homopolymer, when formed, has a glass transition temperature of 60° C. or higher.

Abstract: A pressure-sensitive adhesive composition, used for producing a pressure-sensitive adhesive layer that forms a pressure-sensitive adhesive sheet according to an embodiment of the present invention, includes a pressure-sensitive adhesive composite substantially excluding a carboxyl group as a polar group, a bubble, and a surfactant.

Abstract: A pressure-sensitive adhesive tape that can be used in a temperature environment of at least 90° C. or higher, includes: a pressure-sensitive adhesive layer; and a release liner provided on the surface on at least one side of the pressure-sensitive adhesive layer. The release liner has: a base layer containing a polyolefin resin; and a release layer that contains low-density polyethylene and is provided on at least one side of the base layer to be in contact with the pressure-sensitive adhesive layer.

Abstract: The present invention provides an adhesive unit for emblem, which includes: a plurality of double-faced adhesive pieces each having a shape corresponding to a shape of a respective one of a plurality of emblem pieces; a first release film attached to a face of each of the plurality of double-faced adhesive pieces to be adhered to an emblem, so that a mutual positional relationship of the plurality of double-faced adhesive pieces is maintained; and a second release film attached to the other face of each of the plurality of double-faced adhesive pieces opposite to the face to be adhered to the emblem. The present invention also provides a method of producing the adhesive unit for emblem, a jig for adhering emblem, and an emblem for adhesion.

Abstract: A pressure-sensitive adhesive sheet according to an embodiment of the present invention has a pressure-sensitive adhesive layer including an acrylic polymer. This acrylic polymer contains, as monomer components, an acrylic monomer not containing a polar group (A) and a polar group-containing monomer (B). The 100% modulus of this pressure-sensitive adhesive layer is 20 to 200 N/cm2.

Abstract: A pressure-sensitive adhesive tape roll includes a bobbin and, helically wound therearound, a double-sided pressure-sensitive adhesive tape. The tape includes a double-sided pressure-sensitive adhesive body including a pressure-sensitive adhesive layer containing bubbles and/or hollow microspheres, and arranged on both sides thereof, a release liner A wider than the adhesive body, and an olefinic release liner B. In portions occupying 70% or more of the total length of the tape, a crosswise extending-off portion of the release liner A of an (n)th-turn portion of the adhesive tape vertically overlaps the adhesive body of an adjacent (n+1)th-turn portion of the adhesive tape to form an overlapping portion; the width of the overlapping portion is one half or more of the width of the adhesive body; and the adhesive body of the (n)th-turn adhesive tape is not present below the adhesive body of the adjacent (n+1)th-turn adhesive tape.

Abstract: Disclosed is a release liner having a multilayer structure of at least three layers including two surface layers and an intermediate layer, in which one of the two surface layers contains a high-density polyethylene, the other contains a low-density polyethylene, and the intermediate layer contains a low-density polyethylene alone as its resin component. Also disclosed is a pressure-sensitive adhesive sheet including the release liner and at least one pressure-sensitive adhesive layer, in which a release force X (N/mm) between the release liner and the pressure-sensitive adhesive layer and a rigidity Y of the release liner [(Young's modulus of the release liner)×(thickness)3] (N·mm) satisfy the following conditions: 0<X?0.285 and 0<Y<180X4+0.1. The release liner and pressure-sensitive adhesive sheet excel in releasability and do not suffer from liner pop-off even when, for example, stored in a curved state. The release liner excels also in recyclability.

Abstract: A joined body includes: an adherend; a primer layer provided on the adherend; and a pressure-sensitive adhesive layer provided on the primer layer. The primer layer contains, as an effective component, at least one of chlorinated polypropylene and chlorinated polyethylene and an amount of the effective component per unit area is 0.5 [mg/cm2] or less. The surface of the adherend may be formed of at least one of polypropylene (PP), polyvinyl chloride (PVC), and ethylene-propylene-diene rubber (EPDM).

Abstract: The present invention relates to a pressure-sensitive adhesive sheet including: a laminated structure in which a light-shielding layer, a white or silver layer, and a colored layer are laminated in this order; and at least one pressure-sensitive adhesive layer as at least one surface layer, in which at least one surface of the pressure-sensitive adhesive sheet has L* of 30 or more and C* of 3 or more, L* representing a luminosity and C* representing a chromaticness, and in which the pressure-sensitive adhesive sheet as a whole has a transmittance of a light having a wavelength of 550 nm of 0.3% or less. The pressure-sensitive adhesive sheet of the invention is excellent in light-shielding property irrespective of the thinness thereof as well as in decorativity due to the surface thereof that is colored with a bright color.

Abstract: The present invention provides a gasket comprising an adhesive sheet and a substrate sheet laminated on one surface of the adhesive sheet, which shows a distortion recovery rate according to the following compression distortion recovery test (I) of not less than 40%: Compression distortion recovery test (I): A 10 mm flat square sample is heated to 80° C., under which conditions a load is applied to compress the sample in the thickness direction such that the thickness thereof becomes 75% of the total thickness of the sample before loading, the load is lifted, the total thickness of the sample is measured 3 hr after unloading, and a distortion recovery rate is calculated according to the following formula: distortion recovery rate (%)=(total sample thickness 3 hr after unloading?(total sample thickness before compression×0.75))/(total sample thickness before compression×0.25)×100.

Abstract: A double-faced adhesive tape is accurately joined to a bent tape joining face of a workpiece while a separator on an upper surface remains without separation of the separator. Specifically, the double-faced adhesive tape has the separator on the upper surface remaining and a separator on a lower surface being separated, and a rotary cutter forms slits at given intervals along sides of the separator on the double-faced adhesive tape that is to be supplied to a tape joining position. Then, the double-faced adhesive tape having the separator with the slits formed therein is guided to the tape joining position at a front end of apparatus, and is successively joined to a front face of the workpiece while being pressed with a joining roller.

Abstract: A single-layered acrylic pressure-sensitive adhesive tape having a pressure-sensitive adhesive layer formed of an acrylic pressure-sensitive composition. The acrylic pressure-sensitive adhesive composition contains an acrylic polymer (A) and a (meth)acrylic polymer (B) having glass transition temperature (Tg) such that Tg?45° C. and a mass average molecular weight (Mw) is such that 1500?Mw?4000.

Abstract: An acrylic pressure-sensitive adhesive tape 10 includes: a core layer 20; a surface layer 30a provided on one side the core layer 20; and a surface layer 30b provided in the other side of the core layer 20. The core layer 20 contains an acrylic polymer (A), a fine particle (B), and a bubble (C). The surface layers 30a and 30b contain an acrylic polymer (D) and an acrylic oligomer (E), respectively.

Abstract: Disclosed is a method for joining two strips, where the two strips each include a laminate of a release liner and a pressure-sensitive adhesive layer, and the release liner extends from the corresponding pressure-sensitive adhesive layer in a longitudinal end region of at least one of the two strips. The method includes butting cross-sections of longitudinal ends of the pressure-sensitive adhesive layers of the two strips to bond the two pressure-sensitive adhesive layers; and superposing end regions of the release liners of the two strips and fixing the release liners so that surfaces of the release liners in portions at least 1 mm long inward from the longitudinal ends are not in contact with surfaces of the pressure-sensitive adhesive layers. This method gives a continuous strip from which the release liner can be smoothly removed without “binding” even at the joint.

Abstract: Provided is double-faced adhesive tape joining apparatus that allows accurate joining of a double-faced adhesive tape on a tape joining surface of a workpiece in a curved or bent shape with no damage on a surface of a separator joined to the double-faced adhesive tape and no floating of the separator. Specifically, a hand-operable base includes a tape guide for guiding the double-faced adhesive tape successively supplied, and a joining head for pressing against the joining surface of the workpiece the double-faced adhesive tape supplied to a front end of the base. The base and the joining head are configured as to rotate relatively about a support axis toward a longitudinal tape direction.

Abstract: An optical waveguide film includes a clad layer having an adhesive function; and a core layer covered by the clad layer.

Abstract: An optical waveguide film includes a clad layer having an adhesive function; and a core layer covered by the clad layer.

Abstract: A pressure-sensitive adhesive sheet with a release liner has a bubbles containing pressure-sensitive adhesive layer and a release liner in contact with at least one surface of the bubbles containing pressure-sensitive adhesive layer. The release liner comprises at least three layers including an intermediate layer and surface layers, and the surface layers are positioned on both surfaces of the intermediate layer. The intermediate layer comprises at least one polyolefin resin. Each of the surface layers comprises a low-density polyethylene and an olefinic elastomer and independently has a thickness of 15 ?m or less. The ratio of the thickness of the intermediate layer to the total thickness of the surface layers (the intermediate layer/the surface layers) is in the range of 4 to 19.

Abstract: An acrylic pressure-sensitive adhesive tape according to an embodiment of the present invention has a single-layered pressure-sensitive adhesive layer containing an acrylic polymer (A), a (meth)acrylic polymer (B) whose mass average molecular weight (Mw) is such that 1000?Mw<30000, a fine particle (C), and a bubble (D).