Patent ID: 11926964
Assignee: VALMET TECHNOLOGIES, INC.
Field: Textile and paper machines (Mechanical engineering)
Classification: CPC D | IPC D

Claim 12:
13. A method for manufacturing a press felt, which method comprises the steps of: providing at least one base fabric comprising yarns comprising polyamide and thermoplastic elastomer yarns comprising thermoplastic elastomer originating from bio-based raw material and/or carbon-dioxide based raw material, wherein the total amount of thermoplastic elastomer yarns in the at least one base fabric is at least 10 wt-% calculated based on the total weight of the at least one base fabric; providing thermoplastic elastomer fibers comprising thermoplastic elastomer manufactured from bio-based raw material and/or carbon-dioxide based raw material; and providing fiber layers on the base fabric by attaching the thermoplastic elastomer fibers on the base fabric wherein the thermoplastic elastomer fibers are manufactured of at least one of bio-based raw material and carbon-dioxide based raw material, wherein the thermoplastic elastomer is thermoplastic polyurethane in the fiber layers, and the fiber layers further comprise 1 to 50 wt-% polyamide fibers calculated based on the total weight of the fibers in the fiber layers; and wherein the total amount of bio-based raw material in the thermoplastic elastomer fibers is 30 to 70 wt-%.