Invention Application
- Patent Title: SHEET-LIKE ARTICLE AND A PRODUCTION METHOD THEREFOR
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Application No.: US16741890Application Date: 2020-01-14
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Publication No.: US20200149216A1Publication Date: 2020-05-14
- Inventor: Hisashi Murahara , Shunichiro Nakai , Takahiro Tsuchimoto
- Applicant: TORAY INDUSTRIES, INC.
- Applicant Address: JP TOKYO
- Assignee: TORAY INDUSTRIES, INC.
- Current Assignee: TORAY INDUSTRIES, INC.
- Current Assignee Address: JP TOKYO
- Priority: com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@5dddf440
- Main IPC: D06N3/00
- IPC: D06N3/00 ; D06N3/14

Abstract:
The invention relates to an environmentally friendly production method for a sheet-like article that does not use an organic solvent in the production process and provides a sheet-like article that compares favorably in terms of a uniform feel with artificial leather products produced from an organic solvent based polyurethane and in particular has good surface quality and texture and also provides a production method therefor. The present invention aims to provide a sheet-like article comprising a fibrous base material formed of ultrafine fibers and/or ultrafine fiber bundles provided with, as a binder, a polymer elastomer having a hydrophilic group, any thickness-directional cross section of the sheet-like article containing regions occupied by the polymer elastomer, the regions including independent regions each with a cross-sectional area of 50 μm2 or more, the total area of the independent regions accounting for 0.1% or more and 5.0% or less of the cross-sectional area of the artificial leather in an observation view field. The production method for the sheet-like article according to the present invention provides a production process for a sheet-like article including a fibrous base material formed of ultrafine fibers and, as a binder, a polymer elastomer having a hydrophilic group, the process including a step for adding an aqueous resin dispersion liquid containing a water-dispersed polymer elastomer and a viscosity improver to a fibrous base material and a step for coagulating the polymer elastomer in hot water at a temperature of 50° C. to 100° C.
Information query