A polymer foam adhesive tape including: a substrate film; a polymer foam layer provided on one surface of the substrate film; a first adhesive layer provided on the polymer foam layer; and a second adhesive layer provided on the other surface of the substrate film, in which the polymer foam layer has a density of 0.3 g/cm.sup.3 or less, and a thickness ratio of the substrate film to the polymer foam layer is 1:3 to 1:10.

[Problem] To provide a thermally expandable adhesive sheet which is tack-free in the state prior to use and exhibits high workability using a different means than that of related art. [Solution] The present invention provides a thermally expandable adhesive sheet (1) including: a substrate (3); two thermally expandable adhesive layers (5) each provided on either side of the substrate; and two adhesive permeable layers (7) each provided on a surface of the two adhesive layers, the adhesive permeable layers being permeable to the adhesive at the time of the thermal expansion of the adhesive. By heating the adhesive sheet, it is possible to expand the adhesive sheet while simultaneously allowing the adhesive to emerge on the outermost surface of the adhesive sheet.

Silicon-based protective film for adhesive or self-adhesive elements, characterized in that said protective film is based on silicone and has a level of extractible silicone less than or equal to 100 ng/cm.sup.2, preferably less than or equal to 50, preferably less than or equal to 20 ng/cm.sup.2, and even more preferably less than 10 ng/cm.sup.2, the method of production thereof and uses thereof.

A pressure-sensitive adhesive composition, which may have excellent durability under high temperature or humidity conditions and exhibit high close adhesion to optical films, thereby forming a pressure-sensitive adhesive having superior cuttability and re-workability, is provided. Also, a pressure-sensitive adhesive composition capable of forming a pressure-sensitive adhesive capable of effectively inhibiting bending when applied to a thin substrate such as a very thin glass substrate, minimizing a time required to stabilize physical properties, and preventing a degradation of the secured physical properties in time, a pressure-sensitive adhesive optical member formed using such a pressure-sensitive adhesive composition, an optical laminate, and a display device are provided.

A label assembly including one or more dissolvable thermal direct adhesive labels and methods of assembly and use. According to one embodiment, each label includes a base layer, a thermal direct layer, an adhesive layer, and a barrier layer. The base layer, which has an upper surface and a lower surface, is water-dissolvable and may be made of a water-dissolvable paper. The thermal direct layer is positioned directly over the upper surface of the base layer and functions in the conventional manner to produce markings therein in response to heat. The adhesive layer is water-dissolvable and is positioned below the lower surface of the base layer. The barrier layer, which is positioned directly below the lower surface of the base layer and directly over the adhesive layer, serves to prevent migration of the adhesive layer through the base layer and into contact with the thermal direct layer.

Described herein is a backing comprising a sorbent material entrapped in a non-woven fiber matrix, wherein the backing comprises a first and a second major surface; and a first adhesive layer contacting the first major surface of the backing, wherein the first adhesive layer comprises a pressure sensitive adhesive.

An aqueous NFC containing tail-seal adhesive includes: (a) water; (b) nanofibrillated cellulose; and (c) one or more of: (i) a water-soluble cellulose derivative; or (ii) a water soluble polyol; or (iii) a viscosity modifier other than a water soluble cellulose derivative.

A skin-adhesive item is described that can include a substrate F coated continuously or discontinuously on at least one of the two faces thereof by a pressure-sensitive silicone adhesive Z that has been previously sterilized by means of gamma radiation and demonstrates good tack on the skin even after sterilization.

Provided are a seal tape and a secondary battery. The seal tape for adhering an electrode assembly includes a pressure-sensitive adhesive layer including a cured product of a pressure-sensitive adhesive composition including a polymer including a polar functional group-containing monomer as a polymerization unit, and is expanded in contact with an electrolyte solution to be detached from the electrode assembly, and therefore, isotropic volume expansion and contraction of the electrode assembly may be induced by repeated charging and discharging of a secondary battery and a disconnection phenomenon in which an electrode is disconnected may be prevented.

The purpose of the present invention is to improve the balance between the water dispersibility and the surface barrier property of a water-dispersible sheet having a sealing layer comprising methylcellulose on at least one surface. The water-dispersible sheet with an improved balance between the water dispersibility and the surface barrier property can be obtained by using methylcellulose having a specific viscosity in the sealing layer. Provided is a water-dispersible sheet having a sealing layer comprising methylcellulose on at least one surface of a water-dispersible base paper, wherein the water-dispersible base paper comprises fibrous carboxymethyl cellulose and papermaking fiber with 500 to 750 ml CSF of Canadian standard freeness, the fibrous carboxyalkyl cellulose is alkalized, and the viscosity of a 2% aqueous solution of the methylcellulose measured by a Brookfield viscometer at 20 degree C. is 20-30 cps.