An adhesive tape includes: a substrate made of a fluorine resin; and a silicone-based adhesive agent layer disposed on one surface of the substrate. The adhesive tape has a thickness of 50 μm or more. An adhesive strength of an adhesive surface to the other surface of the substrate after a friction test is 4.0 N/19 mm or more. The friction test is performed according to a test method for coefficient of friction specified in JIS K7125: 1999, and performed in a state where: a contact surface, of a sliding piece used in the test method, brought into contact with a surface to be tested is covered with a single fiber cloth (cotton, for friction) specified in JIS L0803: 2011; the other surface of the substrate is defined as the surface to be tested; and the number of times of reciprocation is set to 10 times.

An adhesive tape includes: a substrate made of a fluorine resin; and a silicone-based adhesive agent layer disposed on one surface of the substrate. The adhesive tape has a thickness of 50 μm or more. An adhesive strength of an adhesive surface to the other surface of the substrate after a friction test is 4.0 N/19 mm or more. The friction test is performed according to a test method for coefficient of friction specified in JIS K7125: 1999, and performed in a state where: a contact surface, of a sliding piece used in the test method, brought into contact with a surface to be tested is covered with a single fiber cloth (cotton, for friction) specified in JIS L0803: 2011; the other surface of the substrate is defined as the surface to be tested; and the number of times of reciprocation is set to 10 times.

The present invention is intended to provide a gel sheet having a formulation providing an adhesive force on the skin side suitable for the skin (i.e., a gel having a low adhesive force and being able to withstand a tip pressure of a terminal and the like), and concurrently having a sufficient adhesive force against an electrode element on the side opposite to the skin side. The present invention is a gel sheet having a laminated structure of a layer A and a layer B, characterized in that the storage elastic modulus of the layer A at 23° C. and 10 Hz is 12,000 to 40,000 Pa, and the storage elastic modulus of the layer B at 23° C. and 10 Hz is 2,000 to 10,000 Pa.

The present invention is intended to provide a gel sheet having a formulation providing an adhesive force on the skin side suitable for the skin (i.e., a gel having a low adhesive force and being able to withstand a tip pressure of a terminal and the like), and concurrently having a sufficient adhesive force against an electrode element on the side opposite to the skin side. The present invention is a gel sheet having a laminated structure of a layer A and a layer B, characterized in that the storage elastic modulus of the layer A at 23° C. and 10 Hz is 12,000 to 40,000 Pa, and the storage elastic modulus of the layer B at 23° C. and 10 Hz is 2,000 to 10,000 Pa.

A method for producing an adhesive layer composition for producing a cooling sheet including a backing layer, an adhesive layer, and a liner layer, the method comprising the step of:

mixing a composition to be mixed containing water, an alum, sodium edetate, a polyacrylic acid, and a neutralized polyacrylic acid such that a mixing temperature becomes 5 to 23° C., to obtain an adhesive layer composition, wherein

in the composition to be mixed,

a content of the water is 69 to 938.24% by mass relative to a total mass of the composition to be mixed,

a content of the alum is 0.18 to 0.42% by mass relative to the total mass of the composition to be mixed,

a content of the sodium edetate is 0.08 to 0.18% by mass relative to the total mass of the composition to be mixed, and

a mass ratio between the content of the alum and the content of the sodium edetate (the content of the alum:the content of the sodium edetate) is 1:1 to 5.25:1.

A method for producing an adhesive layer composition for producing a cooling sheet including a backing layer, an adhesive layer, and a liner layer, the method comprising the step of:

mixing a composition to be mixed containing water, an alum, sodium edetate, a polyacrylic acid, and a neutralized polyacrylic acid such that a mixing temperature becomes 5 to 23° C., to obtain an adhesive layer composition, wherein

in the composition to be mixed,

a content of the water is 69 to 938.24% by mass relative to a total mass of the composition to be mixed,

a content of the alum is 0.18 to 0.42% by mass relative to the total mass of the composition to be mixed,

a content of the sodium edetate is 0.08 to 0.18% by mass relative to the total mass of the composition to be mixed, and

a mass ratio between the content of the alum and the content of the sodium edetate (the content of the alum:the content of the sodium edetate) is 1:1 to 5.25:1.

A self-adhering roofing membrane may include a polymeric membrane. The roofing membrane may include a first adhesive layer disposed on a major surface of the polymeric membrane. The first adhesive layer may include one or both of a hot melt adhesive and a butyl rubber-based adhesive. The roofing membrane may include a UV curable adhesive layer disposed on the first adhesive layer. The UV curable adhesive layer may have a thickness of less than about 4 mils.

An adherable film includes a substrate that is substantially free of a flame retardant material and has a top major surface and a bottom major surface. An adhesive layer disposed on the bottom major surface of the substrate has a continuous pattern. The adhesive layer is made of an adhesive that is substantially free of a flame retardant material. In a plan view, the continuous pattern defines a plurality of discontinuous non-adhesive portions of the substrate without the adhesive. Each discontinuous non-adhesive portion is completely surrounded by the continuous pattern. The adherable film including the adhesive layer having the continuous pattern exhibits an improved flame retarding characteristic relative to a discontinuous adherable film having a substrate with a same material composition as that of the substrate of the adherable film and a discontinuous adhesive layer with a same material composition as that of the adhesive layer of the adherable film.

A hydrogel comprising a polymer matrix formed from a copolymer of an acrylic monomer and a crosslinkable monomer, a water-soluble polymer, water, and a polyhydric alcohol, the hydrogel having a tensile strength of 0.5 N/20 mm to 3.0 N/20 mm.

A polymerizable composition which may be used as an adhesive mass in a method for preparing an adhesive tape or as molding mass in a method for preparing molded articles is provided. The polymerizable composition contains: A) a thermal cationic initiator, or B) a combination of a cationic photoinitiator and a thermal free-radical initiator for inducing the polymerization of the cationically polymerizable monomers in such an amount that the heat energy released during polymerization is sufficient for cleaving the thermal initiator. The adhesive mass is curable via a local impulse a) of thermal energy orb) of thermal energy and/or radiation energy through frontal polymerization; or the molding mass is initially prepared by mixing all components and then molded into the desired shape, whereafter its frontal polymerization is induced by a local impulse a) of thermal energy and/or b) of radiation energy in order to prepare a cured molded article.