Provided is a PSA sheet that allows reduction of the dependence on fossil-resource-based materials as the PSA sheet at large while having good processability. Provided is a PSA sheet having a substrate layer comprising a polyester resin, and a PSA layer placed on at least one face of the substrate layer. At least 50% of all carbons in the PSA layer are biomass-derived carbons. The polyester resin comprises biomass-derived carbons.

An adhesive agent for a battery containing a sulfide-based solid electrolyte, the adhesive agent including a metal compound and a resin, wherein the metal compound is contained in an amount of 1% by weight or more and less than 60% by weight relative to a total weight of the metal compound and the resin. The metal compound is preferably a polyvalent metal salt, and more preferably a copper compound. An adhesive layered body for a battery including a sulfide-based solid electrolyte, the adhesive layered body including a substrate and a layer of the adhesive agent for a battery, the layer being provided on the substrate.

Provided is a thin film with good durability that is easy to handle during storage and use. The film contains, as a rubber component, at least a copolymer having a conjugated diene unit, a non-conjugated olefin unit, and an aromatic vinyl unit, and having a proportion of a butylene unit of 0 mol %, where a filler content is 15 parts by mass or less with respect to 100 parts by mass of the rubber component, no cross-linking agent is contained, and the thickness is 300 μm or less.

A masking film includes an adhesion layer that includes a blend of hydrogenated styrene block copolymer and low density polyethylene. The adhesion layer has an outer adhesion surface configured to contact a substrate. The outer adhesion surface has an average surface roughness Ra of between 100 nm and 350 nm, and an average spacing between peaks Sm of between 20 μm and 150 μm. The masking film also includes a release layer on a side of the adhesion layer opposite the outer adhesion surface.

A composite film for use in an LED wafer-level packaging process to facilitate adhesion of an LED wafer to a carrier and an LED wafer-level packaging process carried out with a heating process are introduced. The composite film includes a substrate including a first surface and a second surface; a heat-resisting pressure-sensing adhesive formed on the first surface of the substrate to allow the LED wafer to be adhered to the substrate; and a heat-resisting thermally-visbreaking pressure-sensing adhesive formed on the second surface of the substrate to allow the substrate to be adhered to the carrier. The heat-resisting thermally-visbreaking pressure-sensing adhesive undergoes the heating process to reduce its adhesiveness strength; thus, upon completion of the LED wafer-level packaging process, the carrier can be detached from the composite film easily.

A double-sided pressure-sensitive adhesive strip is provided that includes a pressure-sensitive adhesive strip comprising two opposing strip surfaces configured for bonding. At least one conductive component connects the two opposing strip surfaces configured for bonding in the z-direction. Also provided is a component and/or a composite, which is bonded with the conductive pressure-sensitive adhesive strip. Further, uses are provided of the conductive pressure-sensitive adhesive strip.

Vibration damping viscoelastic damping material laminates are described. The tapes generally include at least two viscoelastic damping material layers and at least one substrate. The tapes may optionally include one or more release liners. Also described are constrained layer systems formed by adhering the tape to a first substrate and/or second substrate undergoing vibration.

Wearable patches and wearable devices are described. The wearable patch and device include a facestock and an adhesive matrix that may be attached onto the dermis of the wearer for an extended time period.

Provided is a pressure-sensitive adhesive tape excellent in unevenness followability. The pressure-sensitive adhesive tape of the present invention includes: a base material layer; and a pressure-sensitive adhesive layer arranged on at least one side of the base material layer, wherein the pressure-sensitive adhesive tape has a dimensional change ratio at 23° C. of from 0.20 to 0.39.

The invention relates to an aqueous polymer dispersion which comprises: a) an aqueous polymer dispersion comprising grafted rubber polymeric particles from rubber polymer being selected from natural or synthetic rubber, b) an aqueous polymer dispersion with polymeric particles of a second polymer comprising monomeric units derived from a monomeric composition b) comprising: b1) a (meth)acrylate of a linear or branched alcohol in C.sub.4 to C.sub.10 or a mixture of such (meth)acrylates, said (meth)acrylate having Tg.sub.b1 lower than −30° C., b2) optionally, at least one comonomer having Tg.sub.b2 higher than −30° C.,

with said grafted rubber polymeric particles being grafted in an aqueous dispersion by a part of said monomeric composition b) as defined above. The invention covers also a specific process of preparation of said dispersion, an adhesive composition comprising said dispersion, the use of said dispersion in pressure sensitive adhesives and the resulting adhesive.