A sole structure for articles of footwear and a method of manufacturing them comprising at least one polymeric foamed component expanded through supercritical fluid (SCF) expansion of a shaped pre-expanded polymeric material. The polymeric foamed component may include apertures situated and fashioned in the formation of the pre-expanded polymeric material to promote uniform expansion and optimal curing conditions during the SCF expansion process. At least one polymeric foamed component having one set of physical properties that may be bound to or assembled in conjunction with one or more sole components having the same or another set of physical properties.

A footwear article forming process, and a device for the same are disclosed. The process includes: providing a forming mold set including an outer modular mold, an inner formation mold, and a footwear-forming space therebetween. The footwear-forming space comprises a footwear lower portion forming space and a footwear main portion forming space. Footwear article forming steps are as follows: injecting a pre-determined amount of a footwear main portion rubber material into a footwear main portion sprue channel, the footwear main portion rubber material being injected from a footwear main portion rubber injection opening into the footwear main portion forming space via a transfer injection channel; and placing a footwear lower portion rubber material into the footwear lower portion forming space.

Provided is a shoe member constituting a part of a shoe, including an injection molded article that includes an inner member and an outer member partially or fully enclosing the inner member, wherein the inner member and the outer member are each formed from a resin composition containing a thermoplastic resin, a shoe including the shoe member, and a method for producing the shoe member.

Provided is a shoe member constituting a part of a shoe, including an injection molded article that includes an inner member and an outer member partially or fully enclosing the inner member, wherein the inner member and the outer member are each formed from a resin composition containing a thermoplastic resin, a shoe including the shoe member, and a method for producing the shoe member.

A method for manufacturing a rubber boot having a foamed layer includes a first step of coating of boot-shaped lining sheath and a second step of rubber injection. A boot-sole-section coating layer, a boot-vamp-section coating layer, a boot-heel-section coating layer, and a boot-shaft-section coating layer that are coated on a boot-shaped lining sheath, after cured, provide a hardened surface and a stiff support structure among the coating layers that help melted rubber to efficiently flow and fill up runners inside a mold to thereby prevent defects from being formed in a rubber layer formed on a surface of a rubber boot so manufactured.

A method for manufacturing a rubber boot having a foamed layer includes a first step of coating of boot-shaped lining sheath and a second step of rubber injection. A boot-sole-section coating layer, a boot-vamp-section coating layer, a boot-heel-section coating layer, and a boot-shaft-section coating layer that are coated on a boot-shaped lining sheath, after cured, provide a hardened surface and a stiff support structure among the coating layers that help melted rubber to efficiently flow and fill up runners inside a mold to thereby prevent defects from being formed in a rubber layer formed on a surface of a rubber boot so manufactured.

An article is molded from first and second thermosetting elastomer compositions each comprising free-radically curable elastomer and free radical initiator but different from one another. The first thermosetting elastomer composition is molded to fill a first area of a mold cavity at a first temperature at which the first free radical initiator has a half-lifeabout 10 minutes or at which the first thermosetting elastomer composition has an increase in torque less than 10% of a total increase in torque at full cure. The second thermosetting elastomer composition is then inserted into the mold cavity, and the mold is heated to fully cure the article, for example a temperature at which each free radical initiator has a half-lifeabout 1 minute, with the second composition filling a second area of the mold cavity before or during heating and curing.

An article is molded from first and second thermosetting elastomer compositions each comprising free-radically curable elastomer and free radical initiator but different from one another. The first thermosetting elastomer composition is molded to fill a first area of a mold cavity at a first temperature at which the first free radical initiator has a half-lifeabout 10 minutes or at which the first thermosetting elastomer composition has an increase in torque less than 10% of a total increase in torque at full cure. The second thermosetting elastomer composition is then inserted into the mold cavity, and the mold is heated to fully cure the article, for example a temperature at which each free radical initiator has a half-lifeabout 1 minute, with the second composition filling a second area of the mold cavity before or during heating and curing.

A boot form for a hockey skate is made of multiple plastic materials having different hardness properties, or different flexural moduli, and is formed via an injection-molding process or another similar process. One or more of the plastic materials may be reinforced with fibers of glass, carbon, aramid, or another stiffening material to strengthen one or more regions of the boot form. For example, pellets of a first plastic material having a flexural modulus of approximately 190 MPa (e.g., a polyamide elastomer block amide) may be injected into a mold to form a softer upper region of the boot form. And pellets of a second plastic having a flexural modulus of approximately 20,000 MPa (e.g., a Nylon 12 with long glass fibers) may be injected into the mold to form a stiffer lower region of the boot form. Additional skate components may then be attached to the boot form.

A boot form for a hockey skate is made of multiple plastic materials having different hardness properties, or different flexural moduli, and is formed via an injection-molding process or another similar process. One or more of the plastic materials may be reinforced with fibers of glass, carbon, aramid, or another stiffening material to strengthen one or more regions of the boot form. For example, pellets of a first plastic material having a flexural modulus of approximately 190 MPa (e.g., a polyamide elastomer block amide) may be injected into a mold to form a softer upper region of the boot form. And pellets of a second plastic having a flexural modulus of approximately 20,000 MPa (e.g., a Nylon 12 with long glass fibers) may be injected into the mold to form a stiffer lower region of the boot form. Additional skate components may then be attached to the boot form.