Abstract:
PROBLEM TO BE SOLVED: To provide an adhesive tape with optimum characteristics capable of keeping antifouling properties when used to be attached while enhancing releasability when delivered from a roll.SOLUTION: An adhesive tape 150 to be printed with a dimension in a thickness direction includes: a substrate layer 153; an adhesive layer 152 which is provided on one side in a thickness direction of the substrate layer 153 and is constituted by a predetermined adhesive; and a release agent layer 154 which is provided on the another side in the thickness direction of the substrate layer 153, and is constituted by a silicone-based release agent or an olefin resin-based release agent or an acrylic resin-based release agent having a long-chain alkyl group.
Abstract:
Provided is a release agent capable of maintaining the inherent detachability of polyolefin and showing good adhesion to the substrate and a release material using the release agent, and an adhesive tape having such release material. A release agent containing at least a polyolefin, an aromatic isocyanate having three or more isocyanate groups in one molecule, and a polyolefin polyol having a number-average molecular weight of 1500 to 5000.
Abstract:
PROBLEM TO BE SOLVED: To enable release of a release-agent layer with low peel force and suppression of transfer of the release-agent layer to a pressure-sensitive adhesive layer, in a pressure-sensitive adhesive tape including the pressure-sensitive adhesive layer and the release-agent layer.SOLUTION: The pressure-sensitive adhesive tape includes a substrate, the pressure-sensitive adhesive layer, and the release-agent layer in contact with the pressure-sensitive adhesive layer, and simultaneously achieves low peel force and suppression of transfer of the release-agent layer, wherein the pressure-sensitive adhesive layer is formed from a 6-12C alkyl (meth)acrylate-based pressure-sensitive adhesive, and the release-agent layer is formed from a release agent in which a non-reactive polyolefin (A) contains a non-reactive polyolefin (A-1) having tensile modulus at 23°C of 10 MPa or less and tensile fracture stress at 23°C of more than 8 MPa and not more than 20 MPa.
Abstract:
PROBLEM TO BE SOLVED: To provide a release agent that maintains release properties inherent in a polyolefin and has good tight adhesion to a substrate, and to provide a mold release agent using the same, and also, an adhesive tape using the mold release agent.SOLUTION: The release agent includes at least: a polyolefin; an alicyclic isocyanate having three or more isocyanate groups in one molecule; and a polyolefin polyol with a number average molecular weight of 1,500-5,000.
Abstract:
PROBLEM TO BE SOLVED: To provide a peeling sheet and a sticky material which hardly affect on electrical parts or the like and are excellent in peel property. SOLUTION: A sticky material 100 (the sticky material of the present invention) is composed by sticking a sticky sheet 2 comprising a sticky material layer 21 and a sticky sheet substrate 22 to a peeling sheet 1 comprising a releasing agent layer 11 and a substrate (peeling sheet substrate) 12, and the sticky material layer 21 is in contact with the releasing agent layer 11 in the sticky material 100. The releasing agent layer 11 comprises materials which do not substantially contain a silicone compound. The releasing agent layer 11 mainly comprises elastomers and has a Young's modulus of 1.5 GPa or lower. As the elastomers, polybutadiene rubbers (in particular, 1, 4-polybutadiene rubber), polyisoprene rubbers and ethylene-propylene rubbers are preferably used. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a release liner capable of smoothly releasing a release layer from a pressure-sensitive adhesive layer without using a silicone-based releasing agent in the release layer. SOLUTION: The release liner includes a release layer constituted of a polyolefin resin, wherein the release layer has surface irregularities. The surface irregularities of the release layer may be constituted of recesses and protrusions which are irregularly different in shape and have been disposed in irregular arrangement. The release layer preferably has a surface roughness Ra of 1-3 μm. As the polyolefin resin constituting the release layer, at least one polyolefin resin selected from the group consisting of polyethylene, polypropylene, polybutene, poly(4-methyl-1-pentene), and copolymers of ethylene with a 3-10Cα-olefin can be used. COPYRIGHT: (C)2006,JPO&NCIPI