Fiber Sheet Structure Including Multiple Wound Yarn Bundle Formed Of Gelatin Fiber Bundle And Thermoplastic Resin Fiber Bundle

Abstract: [Problem] A purpose of the present invention is to provide a fiber sheet structure that includes a multiple wound yarn bundle formed of a thermoplastic resin fiber bundle and a gelatin fiber bundle, and that has a preferable texture, a high tensile strength, and a great rupture elongation as compared to conventional gelatin fibers. Another purpose of the present invention is to provide a fiber sheet structure that includes a multiple wound yarn bundle formed of a thermoplastic resin fiber bundle and a gelatin fiber bundle, and that has excellent cell adhesiveness for fixing cells thereto and has slipperiness for making inflammation unlikely to occur when a biological tissue is rubbed against the same. [Solution] This fiber sheet structure includes a knit structure and has a cell placement surface and a back surface. The average pore size of the back surface is less than the average pore size of the cell placement surface. The knit structure includes a multiple wound yarn bundle formed of a gelatin fiber bundle and a thermoplastic resin fiber bundle. The thickness of the fiber sheet structure is 30-5000 µm. The number of gelatin fibers forming the gelatin fiber bundle is 5-60. The fineness of the gelatin fibers is 0.5-10 dtex. The total number of the thermoplastic resin fiber bundle and the gelatin fiber bundle in the multiple wound yarn bundle is 2-20. The ratio of the numbers of the gelatin fiber bundle and the thermoplastic resin fiber bundle in the multiple wound yarn bundle is 5:1 to 1:5.

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