Title:
PROCESS FOR PRODUCING INTERTWINED ULTRAFINE FILAMENT SHEET
Document Type and Number:
WIPO Patent Application WO/2005/124002
Kind Code:
A1
Abstract:
A process for producing an intertwined ultrafine filament sheet from filaments capable of ultrafine fiber generation. This process comprises the steps of forming a filament web composed of filaments capable of ultrafine fiber generation whose at least one component is a water soluble thermoplastic polyvinyl alcohol resin; carrying out intertwining of the filament web to thereby obtain an intertwined filament sheet; shrinking the intertwined filament sheet to thereby obtain a shrunk filament sheet; and subjecting the shrunk filament sheet to processing for ultrafine fiber realization so as to convert the filaments capable of ultrafine fiber generation to ultrafine filaments, thereby obtaining an intertwined ultrafine filament sheet. The above intertwining is carried out so that the intertwined filament sheet exhibits an inter-layer peel strength of ≥ 2 kg/2.5 cm. The above shrinking is carried out so as to attain an area shrinkage ratio of ≥ 35%.
Inventors:
Yasuda, Yoshiaki c/o Kuraray Co. Ltd. (1621, Sakazu, Kurashiki-sh, Okayama 22, 71086, JP)
Tanaka, Jiro c/o Kuraray Co. Ltd. (1621, Sakazu, Kurashiki-sh, Okayama 22, 71086, JP)
Ando, Yoshiyuki c/o Kuraray Co. Ltd. (1621, Sakazu, Kurashiki-sh, Okayama 22, 71086, JP)
Nobuto, Yoshiki c/o Kuraray Co. Ltd. (1621, Sakazu, Kurashiki-sh, Okayama 22, 71086, JP)
Nakayama, Kimio c/o Kuraray Co. Ltd. (1621, Sakazu, Kurashiki-sh, Okayama 22, 71086, JP)
Tanba, Yoshihiro c/o Kuraray Co. Ltd. (1621, Sakazu, Kurashiki-sh, Okayama 22, 71086, JP)
Yamasaki, Tsuyoshi c/o Kuraray Co. Ltd. (1621, Sakazu, Kurashiki-sh, Okayama 22, 71086, JP)
Tanaka, Jiro c/o Kuraray Co. Ltd. (1621, Sakazu, Kurashiki-sh, Okayama 22, 71086, JP)
Ando, Yoshiyuki c/o Kuraray Co. Ltd. (1621, Sakazu, Kurashiki-sh, Okayama 22, 71086, JP)
Nobuto, Yoshiki c/o Kuraray Co. Ltd. (1621, Sakazu, Kurashiki-sh, Okayama 22, 71086, JP)
Nakayama, Kimio c/o Kuraray Co. Ltd. (1621, Sakazu, Kurashiki-sh, Okayama 22, 71086, JP)
Tanba, Yoshihiro c/o Kuraray Co. Ltd. (1621, Sakazu, Kurashiki-sh, Okayama 22, 71086, JP)
Yamasaki, Tsuyoshi c/o Kuraray Co. Ltd. (1621, Sakazu, Kurashiki-sh, Okayama 22, 71086, JP)
Application Number:
PCT/JP2005/010937
Publication Date:
December 29, 2005
Filing Date:
June 15, 2005
Export Citation:
Assignee:
KURARAY CO., LTD. (1621, Sakazu Kurashiki-sh, Okayama 22, 71086, JP)
Yasuda, Yoshiaki c/o Kuraray Co. Ltd. (1621, Sakazu, Kurashiki-sh, Okayama 22, 71086, JP)
Tanaka, Jiro c/o Kuraray Co. Ltd. (1621, Sakazu, Kurashiki-sh, Okayama 22, 71086, JP)
Ando, Yoshiyuki c/o Kuraray Co. Ltd. (1621, Sakazu, Kurashiki-sh, Okayama 22, 71086, JP)
Nobuto, Yoshiki c/o Kuraray Co. Ltd. (1621, Sakazu, Kurashiki-sh, Okayama 22, 71086, JP)
Nakayama, Kimio c/o Kuraray Co. Ltd. (1621, Sakazu, Kurashiki-sh, Okayama 22, 71086, JP)
Tanba, Yoshihiro c/o Kuraray Co. Ltd. (1621, Sakazu, Kurashiki-sh, Okayama 22, 71086, JP)
Yamasaki, Tsuyoshi c/o Kuraray Co. Ltd. (1621, Sakazu, Kurashiki-sh, Okayama 22, 71086, JP)
Yasuda, Yoshiaki c/o Kuraray Co. Ltd. (1621, Sakazu, Kurashiki-sh, Okayama 22, 71086, JP)
Tanaka, Jiro c/o Kuraray Co. Ltd. (1621, Sakazu, Kurashiki-sh, Okayama 22, 71086, JP)
Ando, Yoshiyuki c/o Kuraray Co. Ltd. (1621, Sakazu, Kurashiki-sh, Okayama 22, 71086, JP)
Nobuto, Yoshiki c/o Kuraray Co. Ltd. (1621, Sakazu, Kurashiki-sh, Okayama 22, 71086, JP)
Nakayama, Kimio c/o Kuraray Co. Ltd. (1621, Sakazu, Kurashiki-sh, Okayama 22, 71086, JP)
Tanba, Yoshihiro c/o Kuraray Co. Ltd. (1621, Sakazu, Kurashiki-sh, Okayama 22, 71086, JP)
Yamasaki, Tsuyoshi c/o Kuraray Co. Ltd. (1621, Sakazu, Kurashiki-sh, Okayama 22, 71086, JP)
International Classes:
D04H1/48; D06N3/00; (IPC1-7): D04H3/00; D06N3/00
Attorney, Agent or Firm:
Ohtani, Tamotsu (OHTANI PATENT OFFICE, Bridgestone Toranomon Bldg. 6F. 25-2,
Toranomon 3-chom, Minato-ku Tokyo, 105-0001, JP)