摘要:
The present invention provides an outer sole light in weight and excellent in abrasion resistance. The outer sole of the present invention is formed out of a polymer composition with a specific gravity of 0.95 or less, which contains an olefin resin and a styrene elastomer, wherein a storage elastic modulus [E'] and a loss coefficient [tanδ] in a dynamic viscoelasticity measurement (20±3°C, 10 Hz) are 100 MPa to 500 MPa and 0.2 or less respectively, and a maximum tensile stress is 30 MPa or more. The olefin resin contains an ethylene polymer and a propylene polymer, for example. The styrene elastomer contains an α-methyl styrene•butadiene copolymer, for example. A flaw is hardly occurred on the outer sole in use, so that the outer sole is excellent in abrasion resistance.
摘要:
A laminate for laser bonding of the present invention contains a bonding sheet that is melted by irradiation of laser light and a first member laminated on one surface of the bonding sheet and formed of a thermoplastic foam. The difference between the melting point of the first member (Mfoam) and the melting point of the bonding sheet (Msheet) (Mfoam - Msheet) is -50°C to 20°C and the difference between the melt viscosity of the first member (Vfoam) and the melt viscosity of the bonding sheet (Vsheet) (Vfoam - Vsheet) is 3.0 × 10 5 Pa●s to 8.0 × 10 5 Pa●s. Preferably, the laminate for laser bonding contains a second member having transparency to laser light laminated on the other surface of the bonding sheet.
摘要:
A rubber member for laser bonding of the present invention containing a rubber ingredient and silica, wherein the silica has an average particle size of more than 50 nm and 120 nm or less, and the amount of the silica is 10 parts by mass to 50 parts by mass based on 100 parts by mass of the rubber ingredient, the rubber member has a laser light transmittance of 30% or more, provided that the laser light transmittance is a transmittance when the rubber member has a thickness of 2 mm and is irradiated with laser light having a wavelength of 808 nm. The silica preferably includes silica having an average particle size of more than 50 nm and 120 nm or less and silica having an average particle size of 5 nm to 50 nm, and the amount of the silica having an average particle size of more than 50 nm and 120 nm or less is 10 parts by mass to 50 parts by mass based on 100 parts by mass of the rubber ingredient and the amount of the silica having an average particle size of 5 nm to 50 nm is 10 parts by mass to 50 parts by mass based on 100 parts by mass of the rubber ingredient.