A method for producing an automotive friction material with optimized multi-dimensional construction includes receiving a base friction-disc material, cutting the base friction-disc material to a predetermined size and shape, assembling the sized and shaped cut base friction-disc material, bonding the base friction-disc material to a base friction plate, and utilizing a multi nozzle printing array to deposit friction enhancing materials overtop a reaction surface of the base friction-disc material.

A brake pad having a surface coating operable to enhance the bedding-in process during normal operation. The surface coating may be formulated using one or more materials found in a friction lining of the brake pad. The surface coating may be formulated using only non-metal materials.

A method for producing a multi-layered wet friction material includes providing a bottom layer, providing a top layer produced independently of the bottom layer from different materials, and bonding the bottom layer to the top layer. The bottom layer and the top layer may be produced from different formulations and supplied as raw papers. A formulation of the top layer may include twenty to sixty percent (20%-60%) filler, ten to forty percent (10%-40%) wood pulp, five to ten percent (5%-10%) aramid, and twenty-five to thirty-five percent (25%-35%) phenolic resin. A formulation of the bottom layer may include ten to fifty percent (10%-50%) filler, ten to forty percent (10%-40%) wood pulp, five to ten percent (5%-10%) aramid, five to fifteen percent (5%-15%) carbon, and twenty-five to thirty-five percent (25%-35%) phenolic resin.

A friction material includes a friction-generating layer, a core layer, and a base layer. The friction-generating layer presents a friction-generating surface and includes a friction-generating material. The friction-generating material includes friction-adjusting particles. The core layer is adjacent to the friction-generating layer and includes a core material. The core material includes core fibers. The base layer is adjacent to the core layer such that the core layer is disposed between the friction-generating and base layers. The base layer presents a bonding surface facing opposite the friction-generating surface of the friction-generating layer. The base layer includes a fibrous material. The fibrous material includes base fibers chosen from aramid fibers, carbon fibers, cellulose fibers, acrylic fibers, polyvinyl alcohol fibers, glass fibers, mineral fibers, and combinations thereof. A resin is present in at least one of the friction-generating layer, the core layer, and the base layer.

An NBR composition for rubber laminated metal, having 1 to 3 parts by weight of sulfur and 1 to 15 parts by weight of a disulfide compound such as 4,4-dithiodimorpholine or dithiocaprolactam represented by the general formula RN-S-S-NR (wherein RN is a cyclic linking group formed together with the N atom bonded to the S atom), based on 100 parts by weight of NBR. The rubber composition that can improve the protrusion properties of a rubber layer when used for, for example, a gasket or a brake shim material that is a laminated composite metal laminated with another metal plate.

The disclosure relates to a frictional brake element for a friction brake of a motor vehicle, in particular brake disk, having a main element which is manufactured in particular from grey cast iron and which has at least one wear protection layer applied to the main element and at least one intermediate layer situated between the wear protection layer and the main element. It is provided that the intermediate layer is a metallic intermediate layer applied by laser deposition welding.

There are provided a friction member in which both shear strength at normal temperature and high temperature and crack resistance can be satisfied, the disk rotor-attacking properties are low, and the vibration damping properties are high, and brake squeal is less likely to occur, and a friction material composition for an underlay material with which the friction member is obtained, and a friction material. The friction member is more specifically a friction member comprising an overlay material, an underlay material, and a back metal in this order, wherein the underlay material comprises fibrous wollastonite, an average fiber length of the fibrous wollastonite is 100 to 850 m, and an aspect ratio (average fiber length/average fiber diameter) of the fibrous wollastonite is 8 or more.

An etched logo is provided at a location within the layers. This etched section is viewable to the user on the working surface as a form of insignia (logo, trademark, letters, words, serial numbers, designs, patters, artwork, and the like) and does not wear off in normal use because of the coating layers and. Alternatively, the etching (or other slight indentation) may penetrate the 26 while still being viewable in the finished product to display the insignia. Even further, the etching may extend through the coating layers and the substrate. In this particular embodiment, the substrate includes a surface texture (also a form of insignia) viewable to a person in the finished product.

Expanded graphite and/or vermiculite are introduced into the friction lining mixture to eliminate or substantially reduce the amount of binder present therein. The friction lining at most contains from 2.5% by weight of binder. By omitting/reducing binder, the production is very stable and the friction linings can be easily reproduced. The process steps of hardening (including the hardening furnace) and scorching (including the necessary equipment) can be omitted when making such friction linings.

A bicycle disc brake rotor is basically provided with a main body and a heat release layer. The main body is made of a metallic material. The main body includes an outer portion, an inner portion and a cooling facilitation part. The outer portion has oppositely facing braking surfaces. The heat release layer includes a non-metallic material. The heat release layer at least partially overlies the cooling facilitation part.