Abstract: A back-plate composition of the present invention is a composition for forming a back plate of a brake pad, the brake pad having a friction material and the back plate bonded to the friction material. The back-plate composition includes a resin, a plurality of first fibers and a plurality of second fibers having an average length shorter than an average length of the first fibers. In the case where the average length of the first fibers is “L1” [?m] and the average length of the second fibers is “L2” [?m], “L2”/“L1” is in the range of 0.001 to 0.5. This makes it possible to provide a back-plate composition having excellent moldability, as well as a back plate formed of the back-plate composition, a brake pad including the back-plate and a caliper device provided with the brake pad.

Abstract: A brake pad 10 can brake a rotation of a disc 200. The brake pad 10 includes a friction material 12 provided on the side of the disc 200 and a back plate 11 bonded to the friction material 12 on the opposite side of the disc 200. A thickness of a central region of the back plate 11 in a rotational direction of the disc 200 is larger than thicknesses of both end regions of the back plate 11 in the rotational direction of the disc. In the case where a minimum value of the thicknesses of the end regions of the back plate 11 is defined as “h1 [mm]” and a maximum value of the thickness of the central region of the back plate 11 is defined as “h2 [mm]”, h1 and h2 preferably satisfy a relationship of “h2?h1<3”.

Abstract: The brake pad 10 includes a friction material 12 provided on the side of the disc 200 and a back plate 11 bonded to the friction material on the opposite side of the disc 200. A thickness of a peripheral region of the back plate on the side of a center of the disc is larger than a thickness of a peripheral region of the back plate on the side of an outer circumference of the disc. In the case where a minimum value of the thickness of the peripheral region of the back plate on the side of the center of the disc is defined as “h2 [mm]” and a maximum value of the thickness of the peripheral region of the back plate 11 on the side of the outer circumference of the disc is defined as “h1 [mm]”, h1 and h2 satisfy a relationship of “h2?h1<3”.

Abstract: A back-plate composition of the present invention is a composition for forming a back plate of a brake pad, the brake pad having a friction material and the back plate bonded to the friction material. The back-plate composition includes a resin, a plurality of first fibers and a plurality of second fibers having an average length shorter than an average length of the first fibers. In the case where the average length of the first fibers is “L1” [?m] and the average length of the second fibers is “L2” [?m], “L2”/“L1” is in the range of 0.001 to 0.5. This makes it possible to provide a back-plate composition having excellent moldability, as well as a back plate formed of the back-plate composition, a brake pad including the back-plate and a caliper device provided with the brake pad.

Abstract: A back-plate composition of the present invention is a composition for forming a back plate of a brake pad, the brake pad having a friction material and the back plate bonded to the friction material. The back-plate composition includes a resin, a plurality of first fibers and a plurality of second fibers having an average length shorter than an average length of the first fibers. In the case where the average length of the first fibers is “L1” [?m] and the average length of the second fibers is “L2” [?m], “L2”/“L1” is in the range of 0.001 to 0.5. This makes it possible to provide a back-plate composition having excellent moldability, as well as a back plate formed of the back-plate composition, a brake pad including the back-plate and a caliper device provided with the brake pad.

Abstract: A brake pad 10 is adapted to be used in an opposing type caliper device and can brake a rotation of a disc 200. The brake pad 10 includes a friction material 12 provided on the side of the disc 200 and a back plate 11 bonded to the friction material 12 on the opposite side of the disc 200. The back plate 11 is formed of a back-plate composition including a resin and a plurality of fibers. The back plate 11 has an engagement portion 111 into which an attachment portion 70 of the caliper device 100 is capable of being inserted, and with which the inserted attachment portion 70 is engaged. A thickness of a region of the back plate 11 where the engagement portion 111 is provided is larger than a thickness of a region of the back plate 11 where the engagement portion 111 is not provided.

Abstract: A brake pad 10 can brake a rotation of a disc 200. The brake pad 10 includes a friction material 12 provided on the side of the disc 200 and a back plate 11 bonded to the friction material 12 on the opposite side of the disc 200. A thickness of a central region of the back plate 11 in a rotational direction of the disc 200 is larger than thicknesses of both end regions of the back plate 11 in the rotational direction of the disc. In the case where a minimum value of the thicknesses of the end regions of the back plate 11 is defined as “h1 [mm]” and a maximum value of the thickness of the central region of the back plate 11 is defined as “h2 [mm]”, h1 and h2 preferably satisfy a relationship of “h2?h1<3”.

Abstract: The brake pad 10 includes a friction material 12 provided on the side of the disc 200 and a back plate 11 bonded to the friction material on the opposite side of the disc 200. A thickness of a peripheral region of the back plate on the side of a center of the disc is larger than a thickness of a peripheral region of the back plate on the side of an outer circumference of the disc. In the case where a minimum value of the thickness of the peripheral region of the back plate on the side of the center of the disc is defined as “h2 [mm]” and a maximum value of the thickness of the peripheral region of the back plate 11 on the side of the outer circumference of the disc is defined as “h1 [mm]”, h1 and h2 satisfy a relationship of “h2?h1<3”.

Abstract: A brake pad 10 can control rotating of a disc 200. The brake pad 10 includes a friction material 12 provided on a side of the disc and a back plate 11 bonded to the friction material on an opposite side of the disc 200. The back plate has a plurality of ridges 111 and/or a plurality of grooves 112 each formed on an entirety of a surface of the back plate on the side of the friction material so that longitudinal directions of the ridges and/or the grooves are inclined all together with respect to a rotational direction of the disc at a predetermined angle. The friction material is bonded to the back plate so as to make close contact with a surface defining each ridge and/or each groove and the surface of the back plate on the side of the friction material.

Abstract: A brake pad 10 can control rotating of a disc 200. The brake pad includes a friction material 12 provided on a side of the disc and a back plate 11 bonded to the friction material on an opposite side of the disc. The back plate has non-linear first ridges 111 and/or non-linear first grooves 113 and second ridges 112 and/or second grooves 114 each formed on a surface thereof positioned on a side of the friction material so that a longitudinal direction of the first ridges and/or the first grooves corresponds to a first direction and a longitudinal direction of the second ridges and/or the second grooves corresponds to a second direction intersecting the first direction.

Abstract: The brake pad 10 includes a friction material 12 provided on the side of the disc 200 and a back plate 11 bonded to the friction material on the opposite side of the disc. The back plate 11 has a plurality of ridges 111 having a non-linear shape and/or a plurality of grooves 112 having a non-linear shape, the ridges and the grooves each formed on a surface of the back plate 11 on the side of the friction material 12. The friction material 12 is bonded to the back plate 11 so as to make close contact with a surface defining each ridge 111 and/or each groove and the surface of the back plate positioned on the side of the friction material. An average height of the ridges 111 or an average depth of the grooves is preferably in the range of 2 to 6 mm.

Abstract: A back-plate composition of the present invention is a composition for forming a back plate of a brake pad, the brake pad having a friction material and the back plate bonded to the friction material. The back-plate composition includes a resin, a plurality of first fibers and a plurality of second fibers having an average length shorter than an average length of the first fibers. In the case where the average length of the first fibers is “L1” [?m] and the average length of the second fibers is “L2” [?m], “L2”/“L1” is in the range of 0.001 to 0.5. This makes it possible to provide a back-plate composition having excellent moldability, as well as a back plate formed of the back-plate composition, a brake pad including the back-plate and a caliper device provided with the brake pad.

Abstract: A phenol resin composition for forming pulleys used in motor vehicles is disclosed. The composition comprises 35 to 45 wt % of resol, 35 to 45 wt % of glass fiber, 5 to 15 wt % of one or more inorganic powders selected from the group consisting of calcium carbonate, clay, and wallastonite, and 1 to 3 wt % of polyvinyl butyral. The phenol resin pulley for motor vehicles is almost free from swelling or shell cracking on the surface at a high temperature of 250° C. or more and exhibits high mechanical strength and superior thermal shock resistance.

Abstract: A phenol resin composition for forming pulleys used in motor vehicles is disclosed. The composition comprises 35 to 45 wt % of resol, 35 to 45 wt % of glass fiber, 5 to 15 wt % of one or more inorganic powders selected from the group consisting of calcium carbonate, clay, and wallastonite, and 1 to 3 wt % of polyvinyl butyral. The phenol resin pulley for motor vehicles is almost free from swelling or shell cracking on the surface at a high temperature of 250° C. or more and exhibits high mechanical strength and superior thermal shock resistance.

Abstract: A phenol resin composition for forming pulleys used in motor vehicles is disclosed. The composition comprises 35 to 45 wt % of resol, 35 to 45 wt % of glass fiber, 5 to 15 wt % of one or more inorganic powders selected from the group consisting of calcium carbonate, clay, and wallastonite, and 1 to 3 wt % of polyvinyl butyral. The phenol resin pulley for motor vehicles is almost free from swelling or shell cracking on the surface at a high temperature of 250° C. or more and exhibits high mechanical strength and superior thermal shock resistance.

Abstract: A phenol resin composition for forming pulleys used in motor vehicles is disclosed. The composition comprises 35 to 45 wt % of resol, 35 to 45 wt % of glass fiber, 5 to 15 wt % of one or more inorganic powders selected from the group consisting of calcium carbonate, clay, and wallastonite, and 1 to 3 wt % of polyvinyl butyral. The phenol resin pulley for motor vehicles is almost free from swelling or shell cracking on the surface at a high temperature of 250° C. or more and exhibits high mechanical strength and superior thermal shock resistance.

Abstract: The invention provides a process for producing a phenolic resin-made pulley having a metal insert embedded therein. The process includes a step of sealing a gate of a mold with a gate-sealing pin, and simultaneously therewith or thereafter moving forward the part or the whole of a movable side die of the mold, which was moved backward, to a predetermined position to mold the pulley, whereby the packing density of the molding material in the cavity is increased.

Abstract: The present invention provides a process for producing a phenolic resin-made pulley having a metal insert embedded therein, which process comprises:setting a metal insert in the form of a cylinder or a circular solid shaft in a cavity of a mold having a movable side die, a fixed side die and the cavity,closing the mold in a state in which a part or the whole of the movable side die has been moved backward by a given distance from its predetermined position to be taken when a pulley to be produced has a final shape,injecting a phenolic resin molding material into the cavity to fill the cavity with the molding material,preferably sealing a gate of the mold with a gate-sealing pin, and substantially simultaneously with or after the gate sealingmoving forward the part or the whole of the movable side die moved backward, to said predetermined position to mold a phenolic resin-made pulley.This process is particularly effective to mold a phenolic resin-made pulley having holes formed in its disc portion.