Method and apparatus for making composition friction materials

C - Chemistry – Metallurgy – 09 – K

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C09K 3/14 (2006.01) F16D 69/02 (2006.01)

Patent

CA 1118562

JLS:Pm 6/8/77 case 5538 Rev. 7/13/77 METHOD AND APPARATUS FOR MAKING COMPOSITION FRICTION MATERIALS ABSTRACT OF THE DISCLOSURE Composition friction materials particularly adapted for use in making railroad brake shoes include an elastomer such as synthetic rubber or natural rubber. The elastomer forms part of a bond for the remaining friction ingredients. The elastomer, solvent and nonsolvent absorbing granular abrasive materials of the composition are mixed in a manner such that the elastomer is quickly reduced to a paste-like consistency to which the remaining ingredients are added and mixed to form pellets which can be conve- niently formed into brake shoes. -1-

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