TOMISAWA Ren
Academic Assembly School of Science and Technology Institute of Textile Science and Technology
Faculty of Textile Science and Technology Division of Textiles and Kansei Engineering
Associate Professor
Researcher Information
Research Keyword
- synthetic fibers, X-ray analysis, Higher-order structure, Meltblown nonwoven
Research activity information
Award
Paper
- Effects of the nozzle flow on the ultra-SAXS-scale orientation and tensile toughness of melt-spun poly(ethylene terephthalate) fibers
Yuki Tanimoto, Yutaka Ohkoshi, KyoungHou Kim, Ren Tomisawa, Kazuyuki Okada, Toshiji Kanaya, Hiroo Katsuta
Polymer, 350, 129782, Apr. 2026, Refereed - Effect of the Polycarbonate-to-polypropylene Ratio on the Pressure Drop and Filtration Efficiency of a Melt-blown Nonwoven
Yuji Shibata, Ren Tomisawa, KyoungHou Kim, Masashi Sato, Eiko Meguro
Fibers and Polymers, 27, 1679-1687, Jan. 2026, Refereed - Effects of Annealing on the Structure and Properties of a Melt‑Blown Nonwoven Fabricated with Polypropylene and Poly‑(Ethylene Terephthalate) Extruded Simultaneously from Nozzles of Different Diameters
Rina Tomita, Kim Kyoung‑Hou, Ren Tomisawa
Fibers and Polymers, 26, 5371-5378, Sep. 2025, Refereed - In situ analysis of hierarchal structure changes to the tensile breakage of poly(ethylene terephthalate) fiber
Ryohei Fuse, Yuki Tanimoto, Ren Tomisawa, KyoungHou Kim, Yutaka Ohkoshi, Kazuyuki Okada, Hiroo Katsuta, Keiichi Osaka
Polymer, 332, 128558, May 2025, Refereed
- Fabrication of a polycarbonate/polypropylene fiber mix air filter using a melt-blowing apparatus with different nozzle diameters
TOMISAWA Ren, SHIBATA Yuji, KIM KyoungHou, SATO Masashi, MEGURO Eiko
Journal of Textile Engineering, 71(1), 1-8, Feb. 2025, Refereed - Effects of drawing stress on the molecular-chain extension in fiber structure formation of poly(ethylene terephthalate)
R. Tomisawa, T. Ikaga, K.H. Kim,Y. Ohkoshi, K. Okada,T. Kanaya, H. Katsuta
Polymer, 312, 127605, Oct. 2024, Refereed - Effects of poly(vinyl butyral)/poly(ethylene terephthalate) sheath-core composite fibers on the structure and tensile strength of a needlepunchednonwoven
R. Tomisawa, T. Yoshida
Journal of Textile Engineering, 70(5), 66-71, Oct. 2024, Refereed - Thickness and Compression Behavior of a Nonwoven Produced by Melt‑Blowing a Polypropylene/Poly(ethylene terephthalate) Fiber Mix
R. Tomisawa, Y. Ohkoshi, K.H. Kim
Fibers and Polymers, 25, 3539-3548, Aug. 2024, Refereed - ポリプロピレンメルトブロー不織布を用いたAg表面増強ラマン散乱基板の開発
田原 祐助,西山 貴史,山本 純也,冨澤 錬,園田 英人,田中 充
電気学会論文誌, 144(11), 350-356, May 2024, Refereed - Development of Surface-enhanced Raman Scattering Substrate Using Melt-blown Nonwoven Fabric Subjected to Electroless Ag Plating: A Basic Study
Y. Tahara, J. Yamamoto, T. Nishiyama, R. Tomisawa, R. Takigawa
Sensors and Materials, 36(4), 1305-1318, Feb. 2024, Refereed - Polycarbonate/Polypropylene-conjugated Melt-blown Nonwovens: Thermal Stability and Performance as Li-ion Battery Separators
R. Tomisawa, A. Makimura, K.H. Kim, Y. Ohkoshi
Journal of Textile Engineering, 69(5), 71-77, Oct. 2023, Refereed - Tensile strength of polyester fiber estimated by molecular-chain extension prior to structure formation
R. Tomisawa, M. Nagata, Y. Otsuka, T. Ikaga, K.H. Kim, Y. Ohkoshi, K. Okada, T. Kanaya, H. Katsuta
SCIENTIFIC REPORTS, 13(1), 11759, Jul. 2023, Refereed - Fiber structure development of poly(ethylene terephthalate-co-isophthalate) copolymer
R. Tomisawa, M. Okazaki, T. Ikaga, K. H. Kim, Y. Ohkoshi, K. Okada, T. Kabe, T. Kanaya, H. Katsuta, Y. Funatsu
Polymer, 245, 124708, Mar. 2022, Refereed - Effects of melt-spinning speed on structure development of polypropylene fiber after necking
N. Koike, R. Tomisawa, T. Ikaga, K. H. Kim, Y. Ohkoshi, K. Okada, H. Masunaga, T. Kanaya, H. Katsuta, Y. Funatsu
JOURNAL OF FIBER SCIENCE AND TECHNOLOGY, 76(5), 161-169, May 2020, Refereed - Effects of dimensions and regularity on the mechanical properties of the smectic phase formed during orientation-induced crystallization of poly(ethylene terephthalate)
R. Tomisawa, S. Oneda, T. Ikaga, K. H. Kim, Y. Ohkoshi, K. Okada, H. Masunaga, T. Kanaya, H. Katsuta, Y. Funatsu
Polymer, 164, 163-173, Feb. 2019, Refereed - Ultra-SAXS observation of fibril-size structure formation after the necking of poly(ethylene terephthalate) and poly(phenylene sulfide) fiber
R. Tomisawa, T. o, T. Ikaga, K. H. Kim, Y. Ohkoshi, K. Okada, H. Masunaga, T. Kanaya, H. Katsuta, Y. Funatsu
POLYMER JOURNAL, 51(2), 211-219, Nov. 2018, Refereed - Effect of melt spinning conditions on the fiber structure development of polyethylene terephthalate
R. Tomisawa, T. Ikaga, K. H. Kim, Y. Ohkoshi, K. Okada,H. Masunaga, T. Kanaya, M. Masuda, Y. Maeda
Polymer, 116(s1), 367-377, May 2017, Refereed - Effect of draw ratio on fiber structure development of polyethylene terephthalate
R. Tomisawa, T. Ikaga, K. H. Kim, Y. Ohkoshi, K. Okada,H. Masunaga, T. Kanaya, M. Masuda, Y. Maeda
Polymer, 116(s1), 357-366, May 2017, Refereed - Effect of polycarbonate mixing on thermal shrinkage and thermal bonding of nonwoven polypropylene separator
TOMISAWA Ren, MAKIMURA Akihiro, YOSHIDA Satoshi
Journal of Textile Engineering, Refereed
Lectures, oral presentations, etc.
- 繊維の強度を決める構造
冨澤錬
繊維学会東海支部講演会, Mar. 2025, Invited複合メルトブロー法を用いた不織布への機能付与
冨澤錬
日本繊維機械学会 不織布研究会・ ナノファイバー研究会合同研究会, Apr. 2024, InvitedFiber structure development of poly(ethylene terephthalate-co-isophthalate) copolymer
R. Tomisawa, M. Okazaki, T. Ikaga, K. H. Kim, Y. Ohkoshi, K. Okada, T. Kabe, T. Kanaya, H. Katsuta, Y. Funatsu
PPS37, Apr. 2022Ultra-SAXS observation of fibril-size structure formation after the necking of poly(ethylene terephthalate) and poly(phenylene sulfide) fiber
R. Tomisawa, T. Ando, T. Ikaga, K. H. Kim, Y. Ohkoshi, K. Okada, H. Masunaga, T. Kanaya, H. Katsuta, Y. Funatsu
IPC2018, Dec. 2018Dimensions and stability of smectic phase formed on the structure development of poly(ethylene terephthalate) fiber
R. Tomisawa, S. Oneda, T. Ikaga, K. H. Kim, Y. Ohkoshi, K. Okada, H. Masunaga, T. Kanaya, M. Masuda, Y. Maeda
ATC14, Jul. 2017Courses
Research Themes
- 温調引張試験機を用いたUSAXS測定による合成繊維の繊維構造破壊メカニズムの解明
科学研究費助成事業, 日本学術振興会, 若手研究
信州大学
01 Apr. 2026 - 31 Mar. 2031 - 異径混繊複合紡糸技術による新規メルトブロー不織布エアフィルターの開発
官民による若手研究者発掘支援事業費助成金, 国立研究開発法人新エネルギー・産業技術総合開発機構(NEDO)
信州大学
Sep. 2023 - Sep. 2025 - 接着性高分子の複合溶融紡糸による繊維および繊維集合体の高機能化
TEKEUCHI育英奨学金, TEKEUCHI育英会
信州大学
Jun. 2023 - Mar. 2024 - Change in USAXS image of synthetic fibers during tensile deformation.
Grants-in-Aid for Scientific Research, Japan Society for the Promotion of Science, Grant-in-Aid for Early-Career Scientists
Shinshu University
01 Apr. 2023 - 31 Mar. 2026 - 異径混繊複合紡糸技術による新規メルトブロー不織布開発のスマート化
官民による若手研究者発掘支援事業費助成金, 国立研究開発法人新エネルギー・産業技術総合開発機構(NEDO)
信州大学
Sep. 2022 - Sep. 2023 - Study on the fiber strength by the in-situ observation of structure development
Grants-in-Aid for Scientific Research, Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (C)
Shinshu University
01 Apr. 2016 - 31 Mar. 2019
Industrial Property Rights
- セパレータ、電池、及び不織布, 特許第7842323号, 特開2023-108371, 特願2022-009462, Patent right
冨澤 錬 - エアフィルタ濾材及びその製造方法, 特開2025-176681, 特願2025-043888, Patent right
冨澤 錬; 金 慶孝; 伊香賀 敏文; 菅原 昂亮; 吉田 哲史; 芝田 悠二; 佐藤 正; 目黒 栄子 - ニードルパンチ不織布およびその製造方法, 特開2025-174842, 特願2025-012279, Patent right
冨澤 錬; 吉田 照哉; 鈴木 汰周 - メルトブローン不織布、衛生材料、耐水シート及び医療用シート, 特開2024-170251, 特願2023-087311, Patent right
飯濱 翔; 飯場 康三; 松原 暁雄; 大越 豊; 金 慶孝; 冨澤 錬; 菅原 昂亮; 清水 紫 - セパレータ及びその製造方法、電池、並びに、不織布, 特開2023-108371, 特願2022-009462, Patent right
冨澤 錬 - リチウムイオン二次電池用電極、その製造方法、スラリー組成物、及びリチウムイオン二次電池, 特開2022-146804, 特願2021-047969, Patent right
飯野 準也; 冨澤 錬 - リチウムイオン二次電池用電極、その製造方法、及びリチウムイオン二次電池, 特開2022-146805, 特願2021-047970, Patent right
冨澤 錬; 飯野 準也 - ポリプロピレン繊維の繊維物理量または繊維物性の測定方法, 特開2017-002423, 特願2015-116509, Patent right
船津 義嗣; 勝田 大士; 増田 正人; 大越 豊; 冨澤 錬; 小池 直輝; 駒村 高大; 伊香賀 敏文; 金 慶孝 - ポリフェニレンサルファイド繊維の繊維物理量または繊維物性の測定方法, 特開2017-002422, 特願2015-116508, Patent right
船津 義嗣; 勝田 大士; 増田 正人; 大越 豊; 冨澤 錬; 小池 直輝; 駒村 高大; 伊香賀 敏文; 金 慶孝
