Abstract: A closing mechanism of a vehicle door lock apparatus includes a drive, a pivoting body, a close lever, a transmitting member, and a cancel lever. The pivoting body is driven by the drive to pivot when a fork is disposed in a half latched position. The transmitting member is displaceable between an engaging position, where the transmitting member regulates relative displacement of the close lever and the pivoting body, and a releasing position where the transmitting member allows relative displacement. The cancel lever pivots independently of an open lever and displaces the transmitting member to the releasing position. The close lever displaces the fork to a latched position through the pivoting of the pivoting body when the transmitting member is in the engaging position. The close lever does not contact the fork irrespective of the pivoting of the pivoting body when the transmitting member is in the releasing position.

Abstract: The invention provides a clutch seal which can enhance a durability of a membrane portion which is a constituting part of a seal and is constructed by a rubber-like elastic body, and can inhibit a working fluid from standing in a concave surface of the membrane portion. The clutch seal of the invention is an annular seal interposed between a clutch plate in a dry clutch and a piston pressing the clutch plate, has a middle ring fixed to the piston between an outer ring and an inner ring which are fixed to a clutch housing, and has membrane portions constructed by a rubber-like elastic body respectively between the outer ring and the middle ring and between the inner ring and the middle ring, wherein the middle ring is arranged at an intermediate position of a stroke in an initial shape of the membrane portion.

Abstract: Disclosed is a polyethylene porous film having an average pore diameter of 200 nm or less, a specific surface area of 50 m2/g or more, and a porosity of 15% or more, each of which is measured by a mercury intrusion method at room temperature, the polyethylene porous film being obtained by forming pores only by drawing a film containing an ultrahigh molecular weight polyethylene having a viscosity average molecular weight of from 1 million to 15 million and a polyethylene having a weight average molecular weight of from 10,000 to 800,000 at a mass ratio of from 50:50 to 99:1. The polyethylene porous film is produced by molding a film using a mixture of the ultrahigh weight polyethylene and the polyethylene having a weight average molecular weight of from 10,000 to 800,000, biaxially drawing the film, then heat-treating and redrawing the film to form pores in the film.

Abstract: Disclosed is a method for producing a ultra high molecular weight polyethylene film, which comprises: a step of forming a film using a ultra high molecular weight polyethylene material; a step of biaxially drawing the film obtained in the step in the x-axis direction and in the y-axis direction at a temperature not less than the melting point of the ultra high molecular weight polyethylene material; and the step of shrinking the film along at least one of the x-axis direction and y-axis direction. By this method, a ultra high molecular weight polyethylene film having high tensile strength at break, high tear strength and excellent uniformity can be efficiently produced at low cost.

Abstract: A breather structure is provided with: a communication passage which communicates a cylinder oil chamber with the atmosphere; and a stem which is disposed in the communication passage. A stem receiving section is formed in the side of the connection passage on the side of the cylinder oil chamber, the stem receiving section allowing the stem to be disposed inside with a clearance which allows air to be discharged from the cylinder oil chamber while maintaining the hydraulic pressure within the cylinder oil chamber. An air discharge section opened to the atmosphere is formed on the side of the atmosphere in the connection passage. Also, a pit section which releases the clearance to the air discharge section and a restricting section which restricts the movement of the stem toward the air discharge section are respectively formed in the inner peripheral surface of the communication passage.

Abstract: The present invention provides a method for producing stereo complex crystals of polylactic acid, with which a polylactic acid having excellent heat resistance and containing stereo complex crystals at a high ratio can be efficiently produced, the method including: a step of dissolving in a solvent a block copolymer, which includes polylactic acid containing an L-lactic acid unit or poly lactic acid containing a D-lactic acid unit together with at least one kind of an organic polymer having a different structure from that of polylactic acid, and a polylactic acid homopolymer containing a D-lactic acid unit or a polylactic acid homopolymer containing an L-lactic acid unit, the lactic acid unit being an optical isomer that is not contained in the block copolymer, to prepare a polymer mixture solution; and a step of removing the solvent from the polymer mixture solution.

Abstract: A method for producing an ultra-high-molecular-weight polyethylene porous membrane, including: a step of molding a film using an ultra-high-molecular-weight polyethylene raw material; a step of biaxially stretching the obtained film in X-axis and Y-axis directions at a temperature of from a melting point of the film to 180° C.; and a pore-forming step of stretching the stretched film along at least one axis of the X-axis and Y-axis at from 142° C. to 170° C. Alternatively, a method for producing an ultra-high-molecular-weight polyethylene film, including: a step of molding a film by two steps of press-molding and roll-molding using an ultra-high-molecular-weight polyethylene raw material; and a step of biaxially stretching the film obtained in the above step, in X-axis and Y-axis directions at a temperature of from a melting point of the film to 180° C.

Abstract: A closing mechanism of a vehicle door lock apparatus includes a drive, a pivoting body, a close lever, a transmitting member, and a cancel lever. The pivoting body is driven by the drive to pivot when a fork is disposed in a half latched position. The transmitting member is displaceable between an engaging position, where the transmitting member regulates relative displacement of the close lever and the pivoting body, and a releasing position where the transmitting member allows relative displacement. The cancel lever pivots independently of an open lever and displaces the transmitting member to the releasing position. The close lever displaces the fork to a latched position through the pivoting of the pivoting body when the transmitting member is in the engaging position. The close lever does not contact the fork irrespective of the pivoting of the pivoting body when the transmitting member is in the releasing position.

Abstract: A switching mechanism of vehicle door lock device includes a pivotable first lever and a second lever that pivotably acts on a pawl. An inertial lever is provided on the first lever and is pivotable about an axis (X3) from an initial position when an inertial force is applied thereto. A transmitting portion is provided on the second lever and transmits the pivotal movement of the first lever to the second lever when the inertial lever is disposed in its initial position. In contrast, the transmitting portion does not transmit the pivotal movement of the first lever to the second lever when the inertial lever has been pivoted away from its initial position. A first axial center of pivotal movement of the first lever and a second axial center of pivotal movement of the second lever are coaxial axial centers of pivotal movement (X1).

Abstract: A method of manufacturing a PTFE stretched film that has higher tensile strength at its breaking point. In the method, a resin composition is obtained by mixing an emulsion of PTFE (A) with a number average molecular weight of 5×106 or more and an emulsion of PTFE (B) with a number average molecular weight of 1×106 to 4×106 so that the solid content ratio (A/B) of the PTFE (A) and the PTFE (B) is 99/1 to 10/90. The mixed emulsion is subjected to compression molding in a melted state under a reduced-pressure atmosphere to obtain a film.

Abstract: A method for producing an ultra-high-molecular-weight polyethylene porous membrane, including: a step of molding a film using an ultra-high-molecular-weight polyethylene raw material; a step of biaxially stretching the obtained film in X-axis and Y-axis directions at a temperature of from a melting point of the film to 180° C.; and a pore-forming step of stretching the stretched film along at least one axis of the X-axis and Y-axis at from 142° C. to 170° C. Alternatively, a method for producing an ultra-high-molecular-weight polyethylene film, including: a step of molding a film by two steps of press-molding and roll-molding using an ultra-high-molecular-weight polyethylene raw material; and a step of biaxially stretching the film obtained in the above step, in X-axis and Y-axis directions at a temperature of from a melting point of the film to 180° C.

Abstract: The present invention provides a method for producing stereo complex crystals of polylactic acid, with which a polylactic acid having excellent heat resistance and containing stereo complex crystals at a high ratio can be efficiently produced, the method including: a step of dissolving in a solvent a block copolymer, which includes polylactic acid containing an L-lactic acid unit or poly lactic acid containing a D-lactic acid unit together with at least one kind of an organic polymer having a different structure from that of polylactic acid, and a polylactic acid homopolymer containing a D-lactic acid unit or a polylactic acid homopolymer containing an L-lactic acid unit, the lactic acid unit being an optical isomer that is not contained in the block copolymer, to prepare a polymer mixture solution; and a step of removing the solvent from the polymer mixture solution.

Abstract: Disclosed is a method for producing a ultra high molecular weight polyethylene film, which comprises: a step of forming a film using a ultra high molecular weight polyethylene material; a step of biaxially drawing the film obtained in the step in the x-axis direction and in the y-axis direction at a temperature not less than the melting point of the ultra high molecular weight polyethylene material; and the step of shrinking the film along at least one of the x-axis direction and y-axis direction. By this method, a ultra high molecular weight polyethylene film having high tensile strength at break, high tear strength and excellent uniformity can be efficiently produced at low cost.

Abstract: In an ion-conducting membrane, a polystyrene portion having ion conductivity and a polyethylene portion that forms a membrane skeleton together form a microphase-separated structure.

Abstract: A process for producing a fluoroplastic drawn molded article is disclosed in which a fluoroplastic molded article is brought into contact with a heating medium set at a temperature exceeding the static melting point of the molded article and drawn at a temperature at which the molded article does not substantially melt. The fluoroplastic drawn molded article produced in accordance with the present invention is significantlly improved in physical properties such as tensile strength and tensile modulus.