Abstract: A method includes: an inner pipe insertion step of inserting an inner pipe to between a cored bar and a metal movable claw; a designated section corrugated portion formation step of forming a corrugated portion in a first designated section by pressing the first designated section of the inner pipe radially inward by the metal movable claw and plastically deforming the first designated section; a movable claw moving step of moving the metal movable claw outward in the radial direction of the inner pipe; and an inner pipe moving step of moving a second designated section that is the next designated section to between the cored bar and the metal movable claw.

Abstract: A method includes: an inner pipe insertion step of inserting an inner pipe to between a cored bar and a metal movable claw; a designated section corrugated portion formation step of forming a corrugated portion in a first designated section by pressing the first designated section of the inner pipe radially inward by the metal movable claw and plastically deforming the first designated section; a movable claw moving step of moving the metal movable claw outward in the radial direction of the inner pipe; and an inner pipe moving step of moving a second designated section that is the next designated section to between the cored bar and the metal movable claw.

Abstract: A non-crosslinked rubber laminate which is a rubber laminate includes a butyl rubber-containing layer stacked with an ethylene propylene diene rubber and/or ethylene propylene rubber-containing layer, wherein such non-crosslinked rubber laminate is characterized in that the ethylene propylene diene rubber and/or ethylene propylene rubber-containing layer is a rubber-containing layer that contains a low-molecular-weight polyolefin, a phenolic resin, and a crosslinking agent, where: the low-molecular-weight polyolefin is contained by 40 to 70 parts by weight, the phenolic resin is contained by 1 to 4 parts by weight, and the crosslinking agent is contained by at least 1 part by weight, relative to the ethylene propylene diene rubber and/or ethylene propylene rubber constituting a total of 100 parts by weight. An air conditioning hose made of the rubber laminate, for example, can accommodate POE-based lubricating oils and retain vibration absorption characteristics.

Abstract: A resin pipe 30 and a resin member 31 are fixed to a setting portion 5 provided on the front side of a base 6, and a timing pulley 13 which is provided on the back side of the base 6 and to which a light emission unit 3 is attached is rotated. As a result, the light emission unit 3 applies laser light 20 to a junction 32 between the resin pipe 30 and the resin member 31 while revolving around the junction 32. This makes it easy to fuse and join the entire outer circumferential surface of the resin pipe 30 with the entire inner circumferential surface of the resin member 31, which are variously shaped and sized.

Abstract: A resin pipe 30 and a resin member 31 are fixed to a setting portion 5 provided on the front side of a base 6, and a timing pulley 13 which is provided on the back side of the base 6 and to which a light emission unit 3 is attached is rotated. As a result, the light emission unit 3 applies laser light 20 to a junction 32 between the resin pipe 30 and the resin member 31 while revolving around the junction 32. This makes it easy to fuse and join the entire outer circumferential surface of the resin pipe 30 with the entire inner circumferential surface of the resin member 31, which are variously shaped and sized.

Abstract: Damage of the outer surface of a rubber hose due to friction can be prevented while the sealing performance and the productivity are ensured. The following components are provided: a pipe 11 whose one end is connected to a vulcanization pipe and in which pressed liquid is pumped from an inlet 11a disposed at the side face of the other end side; an annular member 12 which is attached to the pipe 11 so as to close an opening of the other end side of the pipe 11, and includes a hole 12a whose diameter is larger than the outer diameter of a rubber hose and in which the rubber hose passes through; and a pump which pumps more liquid than the liquid discharged outside the pipe 11 through the gap between the hole 12a and the rubber hose into an inlet 11a.

Abstract: A connector connectable to a pipe having an annular protrusion on an end portion outer circumference thereof includes a connector main body having, at an end thereof, a pipe insertion hole into which the pipe is inserted; a checker to be pushed in from a temporary stopping position with respect to the connector main body to a completely inserted position with respect to the connector main body; and a retainer disposed inside the connector main body, which is configured to restrict a movement of the checker from the temporary stopping position to the completely inserted position, before the pipe is inserted into the connector main body. The retainer has a retainer lock part in a lower end portion of the retainer. A retainer-locker, which locks the retainer lock part, is provided in a bottom portion on a pipe insertion hole side of the connector main body.

Abstract: Damage of the outer surface of a rubber hose due to friction can be prevented while the sealing performance and the productivity are ensured. The following components are provided: a pipe 11 whose one end is connected to a vulcanization pipe and in which pressed liquid is pumped from an inlet 11a disposed at the side face of the other end side; an annular member 12 which is attached to the pipe 11 so as to close an opening of the other end side of the pipe 11, and includes a hole 12a whose diameter is larger than the outer diameter of a rubber hose and in which the rubber hose passes through; and a pump which pumps more liquid than the liquid discharged outside the pipe 11 through the gap between the hole 12a and the rubber hose into an inlet 11a.

Abstract: Provide a laminate constituted by epichlorohydrin rubber layer and fluororubber layer that are strongly vulcanization-bonded together. A rubber laminate constituted by vulcanization-bonding an epichlorohydrin rubber layer that contains at least (a) magnesium oxide, (b) polythiol vulcanizing agent, (c) at least one type of compound selected from 1,8-diazabicyclo (5,4,0) undecene-7,1,5-diazabicyclo (4,3,0) nonene-5, and salts thereof, (d) at least one type of compound selected from organic phosphonium salts and organic ammonium salts, and (e) maleic anhydride modified polybutadiene, and a fluororubber layer; wherein such rubber laminate is characterized in that: the content of the polythiol vulcanizing agent (b) in the epichlorohydrin rubber layer is 0.3 to 1.2 parts by weight per 100 parts by weight of the epichlorohydrin rubber; and the content of the maleic anhydride modified polybutadiene (e) in the epichlorohydrin rubber layer is 0.3 to 1.

Abstract: A connector connectable to a pipe having an annular protrusion on an end portion outer circumference thereof includes a connector main body having, at an end thereof, a pipe insertion hole into which the pipe is inserted; a checker to be pushed in from a temporary stopping position with respect to the connector main body to a completely inserted position with respect to the connector main body; and a retainer disposed inside the connector main body, which is configured to restrict a movement of the checker from the temporary stopping position to the completely inserted position, before the pipe is inserted into the connector main body. The retainer has a retainer lock part in a lower end portion of the retainer. A retainer-locker, which locks the retainer lock part, is provided in a bottom portion on a pipe insertion hole side of the connector main body.

Abstract: A butyl rubber composition is preferably used for an intermediate rubber layer 3 of a composite flexible hose formed by laminating, from the inner side, an innermost layer 2, intermediate rubber layer 3, fiber reinforcement layer 4, and an external rubber layer 5 in this order. The butyl rubber composition includes halogenated butyl rubber, styrene-isobutylene block copolymer, white filler, white reinforcing agent, brominated alkylphenol-formaldehyde resin, phenol resin, and methylol melamine, and 5 to 45 parts by weight of the styrene-isobutylene block copolymer is added to 100 parts by weight of the halogenated butyl rubber.

Abstract: A vulcanization-adhered laminate is constituted by a structure where a fluororubber layer and a synthetic rubber-containing layer are tightly adhered by vulcanization by vulcanization, and the synthetic rubber layer prior to the vulcanization-adhesion includes organic peroxide, silica, organic phosphonium salt, maleic anhydride-modified polybutadiene, and magnesium oxide.

Abstract: A butyl rubber composition is preferably used for an intermediate rubber layer 3 of a composite flexible hose formed by laminating, from the inner side, an innermost layer 2, intermediate rubber layer 3, fiber reinforcement layer 4, and an external rubber layer 5 in this order. The butyl rubber composition includes halogenated butyl rubber, styrene-isobutylene block copolymer, white filler, white reinforcing agent, brominated alkylphenol-formaldehyde resin, phenol resin, and methylol melamine, and 5 to 45 parts by weight of the styrene-isobutylene block copolymer is added to 100 parts by weight of the halogenated butyl rubber.

Abstract: A vulcanization-adhered laminate is constituted by a structure where a fluororubber layer and a synthetic rubber-containing layer are tightly adhered by vulcanization by vulcanization, and the synthetic rubber layer prior to the vulcanization-adhesion includes organic peroxide, silica, organic phosphonium salt, maleic anhydride-modified polybutadiene, and magnesium oxide.

Abstract: A joint structure of a steel pipe and a metal pipe includes a socket; and a thermosetting resin, the steel pipe including a first joining end having a flat portion of the outer surface of the first joining end adjacent to the base, and an uneven portion of the outer surface of the first joining end adjacent to the front end, the socket covering the first joining end, the metal pipe including a second joining end, the second joining end being interposed between the socket and the first joining end, the first joining end being joined to the second joining end by crimping while the thermosetting resin is present in the gap between the inner surface of the socket and the outer surface of the second joining end and between the outer surface of the first joining end and the inner surface of the second joining end.

Abstract: A structure connecting dissimilar metal tubes is a bellows tube and a metal tube made of stainless steel and aluminum respectively. The bellows tube has a reinforcement portion on its outer surface. The structure includes a nipple, the reinforcement portion, and a crimp collar fitted in that order to the outside of a straight tube portion of the bellows tube. The nipple is joined to the reinforcement portion and the metal tube. A sleeve is joined to the metal tube and the crimp collar. The nipple is bonded to the inner surface of the metal tube with a resin. End faces of the reinforcement portion and the crimp collar are in contact with or located close to an end face of the metal tube.

Abstract: To provide a method for manufacturing zeolite membrane that has characteristics of being resistant to the reaction for a long time and in the high-temperature range, and has characteristic of long-duration hydrogen generation. The inventors of the present invention successfully produced a highly dense zeolite membrane by the steps of: evacuating the surface of porous support not adding the zeolite seed crystals dropwise, thus densely filling the seed crystals in the micropores; and applying hydrothermal treatment to the seed crystals. In addition, the inventors of the present invention confirmed that the zeolite membrane manufactured by the above methods has the characteristic of generating hydrogen for a long time.

Abstract: A connection structure for connecting dissimilar metal tubes includes a metal bellows tube (A) having a reinforcement portion (3) disposed on the outer surface of the bellows (5), and a metal tube (B) composed of a material different from that of the bellows tube, the metal bellows tube (A) being integrally connected to the metal tube (B). A connection section on the bellows tube side includes a straight tube portion (1) of the bellows tube (A), a nipple (2), the reinforcement portion (3), and a crimp collar (4), being fitted and secured to each other in that order from the inside of the tube. The nipple (2) has a base (2-1) joined to the reinforcement portion (3) and a connection end (2-2) extending to the metal tube (B) side farther than an end face of the crimp collar (4).

Abstract: A joint structure of a steel pipe and a light metal pipe includes a socket; and a thermosetting resin, the steel pipe including a first joining end having a flat portion of the outer surface of the first joining end adjacent to the base, and an uneven portion of the outer surface of the first joining end adjacent to the front end, the socket covering the first joining end, the light metal pipe including a second joining end, the second joining end being interposed between the socket and the first joining end, the first joining end being joined to the second joining end by crimping while the thermosetting resin is present in the gap between the inner surface of the socket and the outer surface of the second joining end and between the outer surface of the first joining end and the inner surface of the second joining end.

Abstract: A vibration-absorbing tube includes a bellows composed of a thin metal and a fiber braid reinforcement covering the bellows. The outer face of the bellows is covered (filled) with a buffer material, or rubber, from the bottom of troughs of the bellows to a height that is 0.5 to 2.0 times the height of ridges of the bellows, and the fiber braid reinforcement has a braided angle of 30° to 50°, preferably, of 35° to 45°. Gaps in the fiber braid reinforcement may be impregnated with a curable resin or rubber.