Asics Corporation

Sadaki Mori

Katsuhiro Imazato

Kenichi Harano

Junichiro Tateishi

Hironori Kitayama

Akiyuki Morikawa

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.

Rubber member for laser bonding and shoe

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&#x2212;Msheet) is &#x2212;50&#xb0; C. to 20&#xb0; C. and the difference between the melt viscosity of the first member (Vfoam) and the melt viscosity of the bonding sheet (Vsheet) (Vfoam&#x2212;Vsheet) is 3.0&#xd7;10Pa&#xb7;s to 8.0&#xd7;10Pa&#xb7;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.

Laminate for laser bonding, shoe, and method for producing shoe

There is provided a shoe sole component that has properties such as strength and cushioning property that are suppressed from being changed even under a wide temperature range from severe cold at &#x2212;10&#xb0; C. or lower to high temperature conditions exceeding 30&#xb0; C. A shoe sole component includes a cross-linked foam of a resin composition, the resin composition containing a thermoplastic polyolefin resin, in which tan &#x3b4; (&#x2212;20&#xb0; C. to 40&#xb0; C.) at a frequency of 10 Hz measured according to JIS K 7244-4 is 0.01 to 0.5, and tan &#x3b4; (&#x2212;20&#xb0; C.)/tan &#x3b4; (40&#xb0; C.) at a frequency of 10 Hz is 0.7 to 1.3.

Shoe sole component

There is provided a shoe sole component that has properties such as strength and cushioning property that are suppressed from being changed even under a wide temperature range from severe cold at &#x2212;10&#xb0; C. or lower to high temperature conditions exceeding 30&#xb0; C. A shoe sole component includes a cross-linked foam of a resin composition, the resin composition containing a thermoplastic polyolefin resin, in which tan &#x3b4; [&#x2212;20&#xb0; C. to 40&#xb0; C.] at a frequency of 10 Hz measured according to JIS K 7244-4 is 0.01 to 0.5, and tan &#x3b4; [&#x2212;20&#xb0; C.]/tan &#x3b4; [40&#xb0; C.] at a frequency of 10 Hz is 0.7 to 1.3.

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Kobe, Japan

Sadaki Mori