摘要:
Objects of the present invention are to provide a sound-absorbing material nonwoven fabric and a sound-absorbing material that each exhibit excellent sound absorption performance in a low frequency region and a high frequency region and are also excellent in productivity and quality, and to provide a method for producing such a sound-absorbing material nonwoven fabric. A sound-absorbing material nonwoven fabric according to the present invention includes 30 to 80 mass% of short fibers A having a fineness of 0.4 to 0.9 dtex and 20 to 70 mass% of short fibers B having a fineness of 1.1 to 20.0 dtex. A carding passage coefficient of the short fibers A calculated from the following equation (1) is in a range of 15 to 260. Carding passage coefficient = fineness × strength × √ elongation percentage × √ number of crimps × √ crimping degree / fiber length
摘要:
It is an object of the present invention to provide a laminated nonwoven fabric achieving both handling properties during manufacturing and use and adherence to a skin surface at a high level particularly when used for a face mask. The laminated nonwoven fabric includes a nonwoven fabric layer (A) and a nonwoven fabric layer (B). The nonwoven fabric layer (A) is formed from a fiber A having a single fiber diameter of 50 nm or more and 800 nm or less, and the nonwoven fabric layer (B) is formed from a fiber B having a single fiber diameter of 3 µm or more and 30 µm or less. The nonwoven fabric layer (B) includes 15 to 40% by mass of a fiber B1 to all of the fibers constituting the nonwoven fabric layer (B), the fiber having tensile strength of 2.0 cN/dtex or less as measured based on JIS L 1015: 2010 8.7.2. The nonwoven fabric layer (B) includes a fiber B2 having tensile strength exceeding 2.0 cN/dtex as measured based on JIS L 1015: 2010 8.7.2. The nonwoven fabric layer (A) is disposed as an outermost layer of at least one surface.
摘要:
A dust collecting filter cloth comprising a foundation cloth and a web, wherein at least the web is formed of a sectionally deformed polyphenylene sulfide fiber; and a bag filter consisting of the dust collecting filter cloth which, when used in an exhaust gas dust collecting bag filter filtering device, provides an excellent trapping efficiency despite its small pressure drop, thereby constituting a useful dust collecting material excellent in heat resistance and trapping efficiency.
摘要:
Provided is a nonwoven fabric for skin care products having excellent handleability when a skin care product is made and having excellent adhesion to skin and wipeability of cosmetics attached to skin when the skin care product is made. The nonwoven fabric for skin care products according to the present invention is a nonwoven fabric for skin care products including: a thermoplastic resin fiber having a single fiber diameter of 50 nm or more and 800 nm or less; and a cellulose fiber, in which a tensile strength of the cellulose fiber measured in accordance with JIS L 1015:2010 8.7.2 is 1.9 cN/dtex or less, a total content of the thermoplastic resin fiber and the cellulose fiber is 85% by mass or more relative to a total mass of the nonwoven fabric for skin care products, a content ratio by mass of the thermoplastic resin fiber and the cellulose fiber (thermoplastic resin fiber/cellulose fiber) is 0.23 to 1.50, and a density of the nonwoven fabric for skin care products is 0.08 g/cm 3 to 0.16 g/cm 3 .
摘要:
Disclosed is a PPS member having an excellent fastness to lights such as ultraviolet light, and of which color does not change even when the member is used outdoors, while retaining the characteristics of PPS. The polyphenylene sulfide member according to the present invention is characterized by having a light-fastness rating of Class 1 or higher, against light from an ultraviolet carbon arc lamp, which rating is measured in accordance with JIS L-0842.
摘要:
Provided are a dust-collecting filter cloth that comprises a base fabric and web, wherein at least the web comprises modified cross-section fibers of polyphenylene sulfide; and a bag filter made of the filter cloth. When fitted to an exhaust gas dust collector, the bag filter involves little pressure loss and ensures increased dust-collecting efficiency. As being resistant to heat and ensuring good dust-collecting efficiency, the filter cloth is useful for dust collection.
摘要:
An object of the present invention is to provide a non-woven fabric for a sound-absorbing material and a sound-absorbing material which are excellent in thickness recoverability and followability during molding and excellent in sound-absorbing performance. In order to solve such a problem, there is provided a non-woven-fabric layered body for a sound-absorbing material in which a non-woven fabric layer α and a non-woven fabric layer β are layered, in which the non-woven fabric layer α contains short fibers A having a fineness of 0.4 to 3.8 dtex, short fibers B having a fineness of 4.0 to 22.0 dtex, and short fibers C1 containing a resin having a melting point of 135 to 190°C in an outer surface layer, a total content mass of the short fibers A and the short fibers B with respect to a total mass of the non-woven fabric layer α is 86 to 98% by mass, a content mass of the short fibers C1 with respect to the total mass of the non-woven fabric layer α is 2 to 14% by mass, and a content mass ratio of the short fibers A and the short fibers B (content mass of short fibers A/content mass of short fibers B) is 0.05 to 3.80, the non-woven fabric layer β contains short fibers C2 containing a resin having a melting point of 70 to 190°C in an outer surface layer, and a content mass of the short fiber C2 with respect to a total mass of the non-woven fabric layer β is 20 to 60% by mass, and the non-woven fabric layer α and the non-woven fabric layer β are partially fused.
摘要:
A PPS member such that the feature unique to PPS is not marred, the endurance against light including ultraviolet radiation is excellent, and the color is not deteriorated even in outdoor use. The PPS member is characterized in that the rating of light-fastness against light emitted from an ultraviolet carbon arc lamp measured in conformity with the JIS L-0842 is class 1 or higher.
摘要:
A heat-resistant fabric comprising heat-resistant fibers, characterized in that a contact between fibers constituting the fabric is fixed by means of an inorganic binder; and a method for producing the heat-resistant fabric which comprises impregnating a fabric comprising heat-resistant fibers with an aqueous solution of sodium silicate, drying the impregnated fabric in an atmosphere containing carbon dioxide, to thereby fix and secure a contact between fibers constituting the fabric by silicon oxide.
摘要:
To provide a heat resistant filter of which the reduction of tensile strength and folding endurance is small even when used as a filter material for a filter used at high temperatures, failure of the filter material is difficult even when used at high temperatures, and which is capable of achieving a long life. The heat resistant filter contains: a heat resistant organic fiber base material, and a resin composition which contains an alkaline substance and which adheres to the heat resistant organic fiber base material.