Abstract: A polypropylene resin having: (1) a melt flow rate (MFR) of 6 to 100 g/10 minutes, (2) a molecular weight distribution (Mw/Mn), measured by gel permeation chromatography, of 3 to 6, and (3) a 116° C. non-eluted component content (100-W116(%)) of 50% or more and a content of components eluted at 90° C. or less (W90) of 10 to 30%, measured by temperature-rising fractional chromatography (TREF).

Abstract: A cross-linked fiber is provided by cross-linking a fiber made of polyglutamic acid sodium of molecular weight of 200,000 or more and a polymer cross-linking agent. The polymer cross-linking agent is preferably a polymer having an oxazoline group or a polymer having an epoxy group. The cross-linked fiber is manufactured by: spinning threads from a solution in which the material is mixed by an electrostatic spinning to form a fiber and a fiber assembly; and heating the fiber and the fiber assembly to form the cross-linked fiber.

Abstract: A fiber containing an eggshell membrane component. The fiber is produced by spinning using a solution containing the eggshell membrane component by employing an electrospinning method. A fiber assembly formed from the fiber obtained by employing the electrospinning method imitates a natural eggshell membrane, whereby sufficient air permeability is exhibited. Since the fiber assembly is also excellent in adherence to skin tissue of a human body and stypticity, the fiber assembly may be preferably used as a wound dressing or a cosmetic sheet.

Abstract: A novel propylene resin composition which can readily impart polypropylene fibers with excellent dyeability and can provide dyed fibers improved in washing resistance and weatherability is provided. A polypropylene resin composition obtained by melt blending the following components (A) to (C): (A) 85 to 95 mass % of a polypropylene-based resin; (B) 3 to 9 mass % of ethylene vinyl acetate (EVA); and (C) 2 to 6 mass % of a polyether ester amide-based compound; wherein the vinyl acetate content of the ethylene vinyl acetate as the component (B) is 20 mass % or more and 40 mass % or less, and the melt flow rate of the ethylene vinyl acetate is 10 g/10 min or more and 40 g/10 min or less.

Abstract: A polypropylene resin having: (1) a melt flow rate (MFR) of 6 to 100 g/10 minutes, (2) a molecular weight distribution (Mw/Mn), measured by gel permeation chromatography, of 3 to 6, and (3) a 116° C. non-eluted component content (100-W116(%)) of 50% or more and a content of components eluted at 90° C. or less (W90) of 10 to 30%, measured by temperature-rising fractional chromatography (TREF).

Abstract: A fiber containing an eggshell membrane component. The fiber is produced by spinning using a solution containing the eggshell membrane component by employing an electrospinning method. A fiber assembly formed from the fiber obtained by employing the electrospinning method imitates a natural eggshell membrane, whereby sufficient air permeability is exhibited. Since the fiber assembly is also excellent in adherence to skin tissue of a human body and stypticity, the fiber assembly may be preferably used as a wound dressing or a cosmetic sheet.

Abstract: A surfactant and water are added to a solution containing at least a functional component and a monomer to make emulsion and the total concentration of the functional component and the monomer in the emulsion containing the functional component, the monomer, the surfactant, and the water is then adjusted to 10 to 50%, followed by polymerizing the mixture of the solution, the surfactant, and the water by application of heat or ultraviolet radiation, whereby a resin composite particle can be obtained. Subsequently, the resin composite particle is mixed with an adhesive resin to obtain a fiber treating agent.

Abstract: Disclosed is a file memory unit having a casing for accommodating a head positioning mechanism and a magnetic recording disk virtually in sealed manner, and a frame for supporting the casing resiliently. The unit has the provision of a shock absorbing facility for absorbing the vibration created by the head positioning mechanism and the vibration and impact applied from the outside. The shock absorbing facility has a unitary structure having a first spring constant for absorbing relatively small vibration created by the casing, a second spring constant for absorbing the vibration applied from the outside, and a third spring constant for absorbing the impact applied from the outside.