Hirose Paper Mfg. Co., Ltd. is a Japanese manufacturer specializing in wet-laid nonwoven fabrics and high-performance functional papers. Founded in 1958 and headquartered in Tosa-shi, Kochi Prefecture, Japan, the company built its expertise on the traditional papermaking techniques of Tosa washi, adapting that centuries-old craft to modern industrial fiber processing. Today Hirose Paper positions itself as a pioneer in wet-laid nonwovens, combining that heritage with advanced engineering to develop materials made from 100% synthetic and functional fibers, including what it describes as the world's thinnest paper-making technology.

The company's products serve a wide range of industrial and consumer applications, including filtration media, battery separators, medical and healthcare materials, automotive and aerospace components, food packaging, construction materials, and printing substrates. Its nonwoven fabrics are engineered for specialized functions such as heat resistance, chemical resistance, flame retardancy, and electromagnetic shielding, with additional product lines in nanofiber nonwovens and thermal insulation materials. Hirose Paper operates under ISO 9001 (quality management) and ISO 14001 (environmental management) certifications, reflecting a structured approach to quality and environmental responsibility across its manufacturing operations.

With capital of 20 million yen and roughly 102 employees, Hirose Paper is a compact but globally oriented manufacturer: overseas sales account for approximately 80% of total revenue, supported by international operations including a North American subsidiary (Hirose Paper North America) and a sales office in Düsseldorf, Germany, established in 2019. Leveraging local resources in Kochi to reach a global customer base, the company continues to emphasize innovation and technical specialization as it expands its footprint in filtration, energy, medical, and advanced materials markets worldwide.