The present disclosure relates to thermoplastic collagen elastomer compositions comprising collagen, at least one reactive thermoplastic elastomer, and at least one softener, as well as composite materials made from these compositions. Methods of making and using the thermoplastic collagen elastomer composite materials to produce engineered leather are also disclosed.

A leather substrate formed from waste leather and its method of production, particularly a leather substrate made up substantially of a collagen fibril matrix.

A leather substrate formed from waste leather and its method of production, particularly a leather substrate made up substantially of a collagen fibril matrix.

Described is a recycled leather product comprising, on a supporting layer, a thickness which has a mixture of ground leather fibres and powdered resins and/or heat-sensitive fibres. The invention also relates to a method for making the recycled leather product which comprises the following steps: – selecting and collecting waste from the processing of leather, substantially trimmings and swarf of finished leather coming from the steps for cutting leather goods and footwear, in such a way as to obtain a collected material; – crushing the material collected into pieces of controlled size, preferably with dimensions substantially equal to 10 mm, and mixing/homogenizing the pieces of controlled size, in such a way as to obtain granulated material; – grinding the granulated material for reducing it into leather fibrils, preferably having a size of between 0.5 and 1 mm, inclusive; – mixing the fibrils with powdered resins and/or heat-sensitive fibres and placing them in an orderly fashion on a supporting layer which has at least one adhesive surface portion, in such a way as to make a formed material; – consolidating the formed material by heat setting and compression; – cutting and rolling the consolidated material which is heat-set and compressed; – finishing the rolled material thus obtained to obtain a finished leather product.

Described is a recycled leather product comprising, on a supporting layer, a thickness which has a mixture of ground leather fibres and powdered resins and/or heat-sensitive fibres. The invention also relates to a method for making the recycled leather product which comprises the following steps: – selecting and collecting waste from the processing of leather, substantially trimmings and swarf of finished leather coming from the steps for cutting leather goods and footwear, in such a way as to obtain a collected material; – crushing the material collected into pieces of controlled size, preferably with dimensions substantially equal to 10 mm, and mixing/homogenizing the pieces of controlled size, in such a way as to obtain granulated material; – grinding the granulated material for reducing it into leather fibrils, preferably having a size of between 0.5 and 1 mm, inclusive; – mixing the fibrils with powdered resins and/or heat-sensitive fibres and placing them in an orderly fashion on a supporting layer which has at least one adhesive surface portion, in such a way as to make a formed material; – consolidating the formed material by heat setting and compression; – cutting and rolling the consolidated material which is heat-set and compressed; – finishing the rolled material thus obtained to obtain a finished leather product.

A process for coating vegetable-tanned leathers is provided. The process includes depositing a coating layer composed of an aqueous dispersion of polyurethane resin on a support having anti-adhesion properties, curing the coating layer on the support, depositing an adhesive layer composed of an aqueous dispersion of polyurethane resin onto the cured coating layer, applying a leather piece onto the adhesive layer, the leather piece being a vegetable-tanned leather piece, in a continuous oven curing the adhesive layer to attach the leather piece to the coating layer, and removing the coated leather piece from the support. Within the continuous oven the leather piece reaches a maximum temperature comprised between 65° C. and 75° C., with a dwell time in the oven comprised between 180 and 210 seconds.

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.

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.

The invention herein provides biofabricated materials having zonal properties and methods of making biofabricated materials having zonal properties.

The invention herein provides biofabricated materials having zonal properties and methods of making biofabricated materials having zonal properties.