Asics Corporation

Sumitomo Rubber Industries Limited

Sekisui Plastics Co., Ltd.

Kenichi Harano

Junichiro Tateishi

Daisuke Sawada

Takashi Yamade

Takashi Osaki

Katsuhiro Imazato

Sadaki Mori

Hironori Kitayama

Akiyuki Morikawa

Yasuhiro Otsuka

Masanori Sakamoto

Hisao Yoshinaga

Takuro Kamimura

Yusuke Nishiura

Takuro Akasaka

Nami Masao

Mitsuo Nasako

Keisuke Yamada

Tatsuya Amano

Osamu Yamane

Hisao Matsumiya

Takashi Oomura

Yuuki Hoshino

Masayuki Takano

Provided is a shoe sole member partially or entirely formed of a resin composite in which a plurality of resin foam particles are integrated with one or more non-foamed elastic bodies, wherein a resin composition constituting the one or more elastic bodies and a resin composition constituting the plurality of resin foam particles both include a polyolefin-based resin as a main component, or both include a polyurethane-based resin as a main component. Also provided is a shoe including the shoe sole member.

Shoe sole member and shoe

Provided is a method for producing a resin molded article including an introducing step of introducing a plurality of resin foam particles and a heat medium substance into a forming mold, and a molding step of, after the introducing step, heating the forming mold to a temperature at which the heat medium substance can be vaporized, thereby obtaining a resin molded article including the plurality of resin foam particles.

Method for producing resin molded article and shoe sole member

A laminate of the present invention includes a first member which contains a thermoplastic polymer and through which laser light is transmitted and a second member which contains a thermoplastic polymer and absorbs laser light, wherein the first member is directly bonded to the second member, and A represented by the formula 1: A=&#x2212;9&#xd7;D+Wa&#x2212;45 is more than zero. D represents a distance between a Hansen solubility parameter of the thermoplastic polymer of the first member and a Hansen solubility parameter of the thermoplastic polymer of the second member, and Wa represents work of adhesion calculated from each surface free energy of the first member and the second member. Such a first member and a second member are firmly bonded to each other without using a bonding sheet.

Laminate, shoe sole, and shoe

Provided in the present invention is a shoe that has a ground engaging surface with a simplified structure and that is excellent in lightweight properties since an outsole is composed of an elastomer sheet including a sheet body and foamed polymer particles dispersed in the sheet body.

Outsole and shoe

Provided is a shoe sole member partially or entirely formed of a resin composite, the resin composite including; a non-foamed elastic body matrix composed of an elastomer; and a plurality of resin foam particles dispersed in the elastic body matrix. Also provided is a shoe including the shoe sole member.

An outsole is formed of a viscoelastic body containing a rubber component. This viscoelastic body has a loss factor measured by a dynamic viscoelasticity measurement under conditions of a temperature of 23&#xb0; C., a frequency of 10 Hz, a static strain of 10%, and a dynamic strain of 7% being 0.17 or more, a storage elastic modulus measured by the dynamic viscoelasticity measurement being 5.7 MPa or less, and a ratio of a tensile stress at 300% elongation to a tensile stress at 100% elongation being 4.4 or more. Such outsole is excellent in wet grip performance and durability.

Shoe midsole

There is provided a shoe-forming member comprising a rubber composition containing a styrene-butadiene rubber, a butadiene rubber, silica, a silane coupling agent, and a crosslinking agent, the rubber composition being crosslinked, wherein the rubber composition contains specific materials as the silane coupling agent and the crosslinking agent, and the butadiene rubber and the styrene-butadiene rubber are contained in the rubber composition in predetermined proportions.

Shoe-forming member, method for producing shoe-forming member, and shoe

There is provided a molded foam article including a foam obtained by foaming a formation material wherein the formation material contains a resin component, an Asker C hardness of the foam is 10 degrees or more, and a ratio E40/E0 of the foam is 0.5 or more, the ratio E40/E0 being a ratio of an elastic coefficient E40 at a strain of 40% in relation to an elastic coefficient E0 at a strain of 0% of the foam. The molded foam article has appropriate softness with a small change in hardness under compressive deformation.

Molded foam article, foamed sole, and shoe

A foamed sole according to the present invention includes a foam molding containing a rubber component and a resin component, wherein the maximum value of a loss factor [tan &#x3b4;] at a frequency of 10 Hz and at 30&#xb0; C. to 80&#xb0; C. of the foam molding is 0.18 or less, and a peak of a loss factor [tan &#x3b4;] at a frequency of 10 Hz of the foam molding lies within the range of 100&#xb0; C. or higher. The foamed sole has a feature that it hardly shrinks when it is heated.

Foamed sole 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

The method of manufacturing shoes of the present invention comprises a pre-step of heating a following reactive hot-melt adhesive to melt it and providing the melted adhesive on a joining surface of at least one adherend, an ultraviolet treating step of irradiating the adhesive with ultraviolet light having irradiation energy more than 100 mJ/cmand less than 1200 mJ/cmto polymerize a polyurethane prepolymer, and a joining step of overlaying a joining surface of another adherend on the adhesive to bond both adherends together. The reactive hot-melt adhesive contains a polyurethane prepolymer having an (meth)acryloyl group and an isocyanate group at the end of a molecule, and a photopolymerization initiator. The polyurethane prepolymer includes a non-crystalline polyol and a crystalline polyol, wherein the non-crystalline polyol is contained from 20% by mass to 90% by mass with respect to the whole polyols. The viscosity of the reactive hot-melt adhesive at 80&#xb0; C. is 300 Pa&#xb7;s or less. The method of manufacturing shoes of the present invention can simplify a work process and shorten working hours, and it is possible to manufacture shoes having excellent durability.

Method of manufacturing shoes and shoes

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.

Growing community of inventors

Kobe, Japan

Kenichi Harano