Abstract: An adhesive tape including an adhesive layer is provided. The adhesive layer has a biobased content of 50% or more by mass. The adhesive layer contains a reaction product of a urethane resin (A) and a cross-linking agent (B). The urethane resin (A) contains at least a structural unit derived from a biobased polyether polyol and a structural unit derived from an aromatic polyisocyanate. The adhesive layer has a gel fraction of 10% or more by mass and 80% or less by mass and a stress of less than 50 N/cm2 at 100% strain in a stress-strain curve.

Abstract: An adhesive tape including an adhesive layer is provided. The adhesive layer has a biobased content of 50% or more by mass. The adhesive layer contains a reaction product of a urethane resin (A) and a cross-linking agent (B). The urethane resin (A) contains at least a structural unit derived from a biobased polyether polyol and a structural unit derived from an aromatic polyisocyanate. The adhesive layer has a gel fraction of 10% or more by mass and 80% or less by mass and a stress of less than 50 N/cm2 at 100% strain in a stress-strain curve.

Abstract: A PSA film includes a base material and a PSA layer on at least one side of the base material. The PSA layer has a temperature region, within the range of 70° C. to 100° C., in which its loss tangent tan? is 0.8 or greater. The PSA film can be peeled off through irradiation with active energy radiation.

Abstract: A double-sided adhesive tape is provided for bonding two or more adherends. The double-sided adhesive tape has satisfactory rollability, excellent reworkability after cleavage, and excellent shear holding characteristics at high temperatures. The double-sided adhesive tape includes a foam base, a resin layer (A1) disposed in direct contact with one surface of the foam base, an adhesive layer (B1) disposed on A1 on a side opposite to the foam base, a resin layer (A2) disposed in direct contact with another surface of the foam base, and an adhesive layer (B2) disposed on A2 on a side opposite to the foam base. A1 and A2 are each formed of a crosslinked product of a composition containing a resin having a hydroxy group and a compound reacting with the hydroxy group, and the tensile modulus of each of A1 and A2 is 50 MPa or more and 1000 MPa or less.

Abstract: The invention provides a packaging material that has high formability and that does not undergo a decrease in the adhesion strength between layers and appearance defects such as lifting between layers even after thermal fusion between portions of the sealant layer performed for sealing battery elements and furthermore after a long-term durability test under high temperature and high humidity. The adhesive for the packaging material including, as essential components, a polyol composition (A) and a polyisocyanate composition (B), wherein the polyol composition (A) includes a polyester polyol made from, as essential materials, a polybasic acid or its derivative and a polyhydric alcohol, the polybasic acid or its derivative material is all an aromatic-ring-containing polybasic acid or its derivative, and the polyester polyol has a number-average molecular weight in a range of 3000 to 100000; a battery packaging material, a battery container, and a battery that use the adhesive.

Abstract: An object to be achieved by the present invention is to provide an industrially useful adhesive sheet that can be used to bond various adherends and has excellent peel adhesion, excellent push strength, and excellent holding power under static load. The object of the present invention can be achieved by an adhesive sheet having, on one side or both side of a substrate, an adhesive layer (A) having a tensile strength of 6 N/cm2 or more as determined from a stress-strain curve (a so-called S-S curve) at a strain of 100%.

Abstract: The invention provides a packaging material that has high formability and that does not undergo a decrease in the adhesion strength between layers and appearance defects such as lifting between layers even after thermal fusion between portions of the sealant layer performed for sealing battery elements and furthermore after a long-term durability test under high temperature and high humidity. The adhesive for the packaging material including, as essential components, a polyol composition (A) and a polyisocyanate composition (B), wherein the polyol composition (A) includes a polyester polyol made from, as essential materials, a polybasic acid or its derivative and a polyhydric alcohol, the polybasic acid or its derivative material is all an aromatic-ring-containing polybasic acid or its derivative, and the polyester polyol has a number-average molecular weight in a range of 3000 to 100000; a battery packaging material, a battery container, and a battery that use the adhesive.

Abstract: An adhesive tape including a particular foam base is provided. An average bubble diameter in a machine direction (MD) and an average bubble diameter in a cross-machine direction (CD) of the foam base are each 150 ?m or less, the ratio of the average bubble diameter in the machine direction/an average bubble diameter in a vertical direction (VD) and the ratio of the average bubble diameter in the cross-machine direction/the average bubble diameter in the vertical direction are each 6 or less, and the foam base has an interlaminar strength of 20 N/cm or more. With this adhesive tape, good followability to an adherend and excellent impact resistance can be realized. The adhesive tape of the present invention can be suitably used in portable electronic devices, such as smartphones, tablets, notebooks, and game machines, whose screen size has been increasing and for which a requirement for flexible design is high.

Abstract: [Object] An object of the present invention is to provide an easily peelable adhesive tape that has a good peel adhesive strength when attached to an adherend and that can be easily peeled after being irradiated with active energy rays. [Solution] The present invention is directed to an easily peelable adhesive tape that has, on at least one surface of a base material, an active energy ray-curable layer having a storage modulus (G?a25) of less than 1.0×106 Pa as measured at a temperature of 25° C. and a frequency of 1.0 Hz and has an adhesive layer on the surface side of the active energy ray-curable layer.

Abstract: An adhesive tape includes a foam base and an adhesive layer disposed on at least one surface of the foam base, in which the foam base has a thickness of 120 ?m or less, a 25% compressive strength of 160 MPa or more, and a density of 0.4 g/cm3 or more, and an average bubble diameter in a vertical direction of the foam base is 23 to 50 ?m. Even though the adhesive tape has a small thickness, with this adhesive tape, it is possible to realize excellent waterproofness due to good conformability to an adherend, such drop impact resistance that detachment of the adhesive tape and cracking of the foam base at the time of dropping do not easily occur, and such excellent reworkability that a component can be efficiently separated even in the case where a problem occurs.

Abstract: [Object] An object of the present invention is to provide an easily peelable adhesive tape that has a good peel adhesive strength when attached to an adherend and that can be easily peeled after being irradiated with active energy rays. [Solution] The present invention is directed to an easily peelable adhesive tape that has, on at least one surface of a base material, an active energy ray-curable layer having a storage modulus (G?a25) of less than 1.0×106 Pa as measured at a temperature of 25° C. and a frequency of 1.0 Hz and has an adhesive layer on the surface side of the active energy ray-curable layer.

Abstract: There is provided a double-sided adhesive tape includes a foam base, a resin film disposed on a surface of the foam base, an adhesive layer disposed on a surface of the resin film, and an adhesive layer disposed on another surface of the foam base. The foam base has a density of 0.45 g/cm3 or less and an interlaminar strength of 10 N/cm or more. The adhesive layer has a 180°-peel adhesion of 10 N/20 mm or more. The 180°-peel adhesion is measured at a peeling speed of 300 mm/min when an adhesive tape including a 25-?m-thick PET base and a 25-?m-thick adhesive layer disposed on the PET base is bonded to an aluminium board at 23° C. and 65% RH by pressing the adhesive tape against the aluminium board with one stroke of a 2-kg roller and subsequently the adhesive tape is left standing for 1 hour at 23° C. and 50% RH.

Abstract: An object to be achieved by the present invention is to provide an industrially useful adhesive sheet that can be used to bond various adherends and has excellent peel adhesion, excellent push strength, and excellent holding power under static load. The object of the present invention can be achieved by an adhesive sheet having, on one side or both side of a substrate, an adhesive layer (A) having a tensile strength of 6 N/cm2 or more as determined from a stress-strain curve (a so-called S-S curve) at a strain of 100%.

Abstract: There is provided a double-sided pressure-sensitive adhesive tape including resin films laminated on both surfaces of a foaming body substrate, and pressure-sensitive adhesive layers laminated on the surface of the resin film, in which the foaming body substrate has a density of 0.45 g/cm3 or less, and an interlaminar strength of 10 N/cm or more, and pressure-sensitive adhesive layer exhibits a 180° peeling adhesive force of 10 N/20 mm or more when a pressure-sensitive adhesive tape obtained by providing the pressure-sensitive adhesive layer on a polyethylene terephthalate substrate having a thickness of 25 ?m such that the thickness of the pressure-sensitive adhesive layer is 25 ?m is allowed to adhere onto an aluminum plate with pressure under the predetermined environment, and is peeled at a peeling rate of 300 mm/min.

Abstract: The present invention provides an adhesive tape capable of giving a tactile feedback when being used for fixing a component of a touch panel device having the function of sensing contact with an object and giving a tactile feedback. The present invention relates to an adhesive tape including a foam substrate layer and an adhesive layer, wherein the adhesive tape is used for fixing a touch panel device having the function of sensing contact with or approach to the touch panel device and giving tactile feedback, and when the adhesive tape is compressed in the thickness direction with a compressive load of 5 N/cm2, a displacement is 12 ?m or more and less than 130 ?m.

Abstract: There is provided a double-sided adhesive tape includes a foam base, a resin film disposed on a surface of the foam base, an adhesive layer disposed on a surface of the resin film, and an adhesive layer disposed on another surface of the foam base. The foam base has a density of 0.45 g/cm3 or less and an interlaminar strength of 10 N/cm or more. The adhesive layer has a 180°-peel adhesion of 10 N/20 mm or more. The 180°-peel adhesion is measured at a peeling speed of 300 mm/min when an adhesive tape including a 25-?m-thick PET base and a 25-?m-thick adhesive layer disposed on the PET base is bonded to an aluminium board at 23° C. and 65% RH by pressing the adhesive tape against the aluminium board with one stroke of a 2-kg roller and subsequently the adhesive tape is left standing for 1 hour at 23° C. and 50% RH.

Abstract: An adhesive tape includes an adhesive layer on at least one surface of a foam base material, wherein the foam base material is a foam base material having a thickness of 300 ?m or less and an interlaminar strength of 6 to 50 N/cm, and the adhesive layer is an adhesive layer having a thickness of 50 ?m or less and a 180° peel adhesion force of 0.5 to 4 N/20 mm at a peel rate of 300 mm/min, where the adhesive tape is formed by disposing the adhesive layer having a thickness of 25 ?m on a PET base material having a thickness of 25 ?m. Favorable impact resistance and reworkability can be realized by this adhesive tape in spite of a small thickness.

Abstract: An adhesive tape includes a foam base and an adhesive layer disposed on at least one surface of the foam base. The foam base has a 25% compressive strength of 250 kPa or more. An average bubble diameter in a machine direction and an average bubble diameter in a cross-machine direction of the foam base are each 150 ?m or less, and a ratio represented by the average bubble diameter in the machine direction/an average bubble diameter in a vertical direction and a ratio represented by the average bubble diameter in the cross-machine direction/the average bubble diameter in the vertical direction are each 5 or less. With this adhesive tape, in addition to good conformability to an adherend and excellent impact resistance, suitable reworkability can be realized even when the adhesive tape has a small width.

Abstract: An adhesive tape includes a foam base and an adhesive layer disposed on at least one surface of the foam base, in which the foam base has a thickness of 120 ?m or less, a 25% compressive strength of 160 MPa or more, and a density of 0.4 g/cm3 or more, and an average bubble diameter in a vertical direction of the foam base is 23 to 50 ?m. Even though the adhesive tape has a small thickness, with this adhesive tape, it is possible to realize excellent waterproofness due to good conformability to an adherend, such drop impact resistance that detachment of the adhesive tape and cracking of the foam base at the time of dropping do not easily occur, and such excellent reworkability that a component can be efficiently separated even in the case where a problem occurs.

Abstract: An adhesive tape including a particular foam base is provided. An average bubble diameter in a machine direction (MD) and an average bubble diameter in a cross-machine direction (CD) of the foam base are each 150 ?m or less, the ratio of the average bubble diameter in the machine direction/an average bubble diameter in a vertical direction (VD) and the ratio of the average bubble diameter in the cross-machine direction/the average bubble diameter in the vertical direction are each 6 or less, and the foam base has an interlaminar strength of 20 N/cm or more. With this adhesive tape, good followability to an adherend and excellent impact resistance can be realized. The adhesive tape of the present invention can be suitably used in portable electronic devices, such as smartphones, tablets, notebooks, and game machines, whose screen size has been increasing and for which a requirement for flexible design is high.