Abstract: The invention relates to a needle-punched nonwoven fabric wherein short fibers of polylactic acid containing an epoxy compound account for 20 to 40 mass % while short fibers of polyethylene terephthalate account for 80 to 60 mass %, the metsuke (weight per unit surface area) being 100 to 200 g/m2, and the tensile strength per metsuke at 20° C. being 0.30 to 0.60 (N/cm)/(g/m2) in the longitudinal direction and 0.48 to 0.90 (N/cm)/(g/m2) in the lateral direction. The present invention provides needle-punched nonwoven fabrics that are low in environment load, high enough in durability to serve as interior finishing material for automobiles, and high in stretchability during molding.

Abstract: The invention relates to a needle-punched nonwoven fabric wherein short fibers of polylactic acid containing an epoxy compound account for 20 to 40 mass % while short fibers of polyethylene terephthalate account for 80 to 60 mass %, the metsuke (weight per unit surface area) being 100 to 200 g/m2, and the tensile strength per metsuke at 20° C. being 0.30 to 0.60 (N/cm)/(g/m2) in the longitudinal direction and 0.48 to 0.90 (N/cm)/(g/m2) in the lateral direction. The present invention provides needle-punched nonwoven fabrics that are low in environment load, high enough in durability to serve as interior finishing material for automobiles, and high in stretchability during molding.

Abstract: The invention relates to a needle-punched nonwoven fabric wherein short fibers of polylactic acid containing an epoxy compound account for 20 to 40 mass % while short fibers of polyethylene terephthalate account for 80 to 60 mass %, the metsuke (weight per unit surface area) being 100 to 200 g/m2, and the tensile strength per metsuke at 20° C. being 0.30 to 0.60 (N/cm)/(g/m2) in the longitudinal direction and 0.48 to 0.90 (N/cm)/(g/m2) in the lateral direction. The present invention provides needle-punched nonwoven fabrics that are low in environment load, high enough in durability to serve as interior finishing material for automobiles, and high in stretchability during molding.

Abstract: An object of the present invention is to provide a control method, for a wastewater purification system, where the status of a wastewater purification system employing a batch activated sludge process is accurately understood by analyzing the data waveforms of DO, ORP and pH. In the control method for a wastewater purification system, an aeration device is controlled by a programmable sequencer, a controller acquires respective data waveforms from a first sensor, a second sensor and a third sensor and the control status data of the programmable sequencer, the controller analyzes the data waveform of dissolved oxygen concentration from the first sensor, the data waveform of oxidation-reduction potential from the second sensor, and the data waveform of hydrogen ion concentration from the third sensor, and the controller performs an alarm process when a deviation from a previously fixed normal state is discovered as a result of the analysis.

Abstract: An object of the present invention is to provide a control method, for a wastewater purification system, where the status of a wastewater purification system employing a batch activated sludge process is accurately understood by analyzing the data waveforms of DO, ORP and pH. In the control method for a wastewater purification system, an aeration device is controlled by a programmable sequencer, a controller acquires respective data waveforms from a first sensor, a second sensor and a third sensor and the control status data of the programmable sequencer, the controller analyzes the data waveform of dissolved oxygen concentration from the first sensor, the data waveform of oxidation-reduction potential from the second sensor, and the data waveform of hydrogen ion concentration from the third sensor, and the controller performs an alarm process when a deviation from a previously fixed normal state is discovered as a result of the analysis.

Abstract: With the use of a lead-free cationic electrodeposition coating composition containing a sulfonium-modified epoxy resin, an amine-modified novolak-type epoxy resin, and a blocked isocyanate curing agent as a binder resin, wherein the content of volatile organic components is 1% by weight or less, the coating liquid conductivity is 1000 to 2500 ?S/cm, and the minimum film-forming temperature of the coated layer electrodeposited on an object to be coated is 20 to 35° C., electrodeposition coating is carried out at or above the temperature which is lower by 2° C. than the minimum film-forming temperature and at or below the temperature which is higher by 6° C. than the minimum film-forming temperature.

Abstract: With the use of a lead-free cationic electrodeposition coating composition containing a sulfonium-modified epoxy resin, an amine-modified novolak-type epoxy resin, and a blocked isocyanate curing agent as a binder resin, wherein the content of volatile organic components is 1% by weight or less, the coating liquid conductivity is 1000 to 2500 &mgr;S/cm, and the minimum film-forming temperature of the coated layer electrodeposited on an object to be coated is 20 to 35° C., electrodeposition coating is carried out at or above the temperature which is lower by 2° C. than the minimum film-forming temperature and at or below the temperature which is higher by 6° C. than the minimum film-forming temperature.

Abstract: A fuel tank vapor control system is provided with an improved device for warning of malfunction of a canister. The device judges on malfunction of the canister on the basis of whether opening of a purge passage is effective for causing an inside temperature fall of the canister. In order to prevent an erroneous judgement on malfunction of the canister on the basis of an overflow condition of the canister, a purge passage is first closed so that the canister fully adsorbs hydrocarbon vapors from a fuel tank and then opened so that an inside temperature fall of the canister occurs. Opening and closing of the purge passage is repeated for several times so that a reliable judgement on malfunction of the canister is formed after lapse of a certain time and under a different operating condition of the canister.