Systems and methods for preparing fish leather, which may comprise lionfish leather. A method of making lionfish leather may comprise cutting, using one or more guidelines, at least a portion of a lionfish body, wherein the guidelines are configured to facilitate removal of skin from of the lionfish body; removing, using the one or more guidelines, the skin from the lionfish body, wherein the removed skin defines a cut skin pattern based on at least the guidelines; and subjecting the removed skin to at least a tanning process to provide a lionfish leather.

Leather fibers for yarn are provided. The leather fibers used to manufacture the yarn are obtained from cowhide. The leather fibers obtained through leather selection and separation techniques may improve the physical properties of the yarn.

Leather fibers for yarn are provided. The leather fibers used to manufacture the yarn are obtained from cowhide. The leather fibers obtained through leather selection and separation techniques may improve the physical properties of the yarn.

Systems and methods for preparing fish leather, which may comprise lionfish leather, are described. A method of making lionfish leather may comprise cutting, using one or more guidelines, at least a portion of a lionfish body, wherein the guidelines are configured to facilitate removal of skin from of the lionfish body; removing, using the one or more guidelines, the skin from the lionfish body, wherein the removed skin defines a cut skin pattern based on at least the guidelines; and subjecting the removed skin to at least a tanning process to provide a lionfish leather.

Systems and methods for preparing fish leather, which may comprise lionfish leather, are described. A method of making lionfish leather may comprise cutting, using one or more guidelines, at least a portion of a lionfish body, wherein the guidelines are configured to facilitate removal of skin from of the lionfish body; removing, using the one or more guidelines, the skin from the lionfish body, wherein the removed skin defines a cut skin pattern based on at least the guidelines; and subjecting the removed skin to at least a tanning process to provide a lionfish leather.

Disclosed is an apparatus for dry-manufacturing recycled leather comprising air-laid material; and recycled leather manufactured using the apparatus for dry-manufacturing recycled leather. The apparatus for dry-manufacturing recycled leather molds leather fibers and general fibers, which are mixed using air-laid material, and thus a conventional carding process is not required, and recycled leather manufactured thereby has a high tensile strength.

A reconstituted-leather-manufacturing process includes a progressively increasing application of pressure to an aqueous leather solution to form a web of leather fibers. The solution/web may be dewatered to an extent before the first application of a pressure so that the solution/web consistency is on the order 29-55% (fiber to web/solution, by weight) when the first pressure of the progressive sequence of pressures is applied. Tannin (and various chemicals) may be added to the solution. The progressive pressing of the solution/web may be followed by a progressive drying of the web by application of a sequence of increasing temperatures via drying vessels.

A method of making stretch leather composites is provided. The method includes providing a semi-finished leather. The semi-finished leather is split to obtain a final split having a thickness of from 0.10 mm to about 1.25. The final split is dried to obtain a crust. The crust is laminated with a stretch fabric impregnated with a stiffener, e.g., starch, to prepare a laminate. The starch is removed from the stretch fabric after preparing the laminate, for example, by dissolving the starch in a liquid solution naturally present in another laminate processing step liquid. Laminating the crust can include the use of an adhesive. A method of manufacturing an article of footwear can include providing a stretch leather composite, cutting the stretch leather composite to conform to a predetermined shape, and manufacturing the footwear using the stretch leather composite.

Provided are leather fibers for yarn. The leather fibers forming the yarn are obtained from cowhide. An amount of the leather fibers having an H value of 30 or more is 30% by weight or more of a total leather fibers contained in the yarn. The H value is defined by the following Equation 2: [Equation 2] H=L/D where L: leather fiber length, and D: leather fiber thickness. A thickness index (M) of the leather fibers satisfies Equation 1: [Equation 1] M=D1/D2?60 where D1: an average thickness of 0 fibers having a highest thickness in 1 mg of leather fibers, and D2: an average thickness of 10 fibers having a lowest thickness in 1 mg of leather fibers.

Provided are leather fibers for yarn. The leather fibers forming the yarn are obtained from cowhide. An amount of the leather fibers having an H value of 30 or more is 30% by weight or more of a total leather fibers contained in the yarn. The H value is defined by the following Equation 2: [Equation 2] H=L/D where L: leather fiber length, and D: leather fiber thickness. A thickness index (M) of the leather fibers satisfies Equation 1: [Equation 1] M=D1/D2?60 where D1: an average thickness of 0 fibers having a highest thickness in 1 mg of leather fibers, and D2: an average thickness of 10 fibers having a lowest thickness in 1 mg of leather fibers.