Abstract: Calendered AES film containing 25-40% rubber; usually pigmented.

Abstract: Plasticized elastomer is securely bonded to a metal surface by interposing between the adhesive-coated metal surface and the elastomer a sheet of material obtained by combining adhesive with a portion of the elastomer that has been treated to remove plasticizers therefrom and heating the assembly in a mold under pressure. The sheet material is made up by dissolving a portion of the plasticized elastomer in an organic solvent, casting the solution, exposing it to a vacuum to remove the solvent and plasticizers, dissolving the de-plasticized material in liquid adhesive and casting and drying the resulting liquid.

Abstract: A racing tire coated with a composition that contains rubber extracted from used tires dispersed in a combination solvent has increased traction, pliability and service length over untreated racing tires. The extracted rubber can be natural rubber, synthetic rubber, or a mixture thereof, while the solvent includes a major amount of a mixed hydrocarbon petroleum distillate, and minor amounts of dimethyl ketone and methyl salicylate.

Abstract: A rubber liner for preventing build-up of materials, such as gypsum, in handling or storage facilities, comprises, by weight, 100 parts of a rubber elastomer, 10 to 30 parts of a fluorine-containing polymer and 5 to 20 parts of a compatible oil compound. Preferably, the liner also contains from 2 to 15 parts of a compatible grease. For improved adhesion to metal surfaces such as tanks and pipes, a laminate is made utilizing said non-stick rubber liner as an outer liner, utilizing a diffusion-resistant hard rubber layer as an intermediate layer, and utilizing a soft rubber layer designed for maximum rubber-to-metal adhesion as an interior layer.

Abstract: A valve for a flow regulator employed in a fluid system is disclosed. The flow regulator includes a housing defining an internal chamber and a fluid inlet and outlet communicating with the chamber each adapted to be connected to the fluid system. Mounted within the chamber is a reciprocating piston that is actuated by an external master piston. A backing element is also mounted within the housing. The valve includes an elastomeric inner member including a body with a circumferential layer of elastomeric material bonded to the body. The inner member is mounted between the piston and stationary backing member and upon being compressed by the piston, varies the flow area through the inner chamber. To protect the interface of the outer layer and the body from fluid flow, a shield may be placed along the backing member and the upstream end of the inner member.

Abstract: A taped and double cemented or glued rubber joint for use in connecting together the lapped cemented ends of adjacent cured rubber membranes in a roof construction, and for giving protection thereto. The lapping ends of the cured rubber membranes are sealed together by means of cement or the like, providing an adhesive contact system sealing the seam between adjacent membranes. An additional sealing means is provided which is premade and is adapted to be caused to adhere to both portions of both of the overlapping adjacent rubber membranes. This tape or additional sealing means is a composite structure and is applied over the seam between adjacent membranes providing double sealing structure and the tape comprises a lower uncured gum rubber strip which is applied over a portion of one rubber membrane which laps over a portion of the other rubber membrane and also includes a portion which extends over and is cemented to a part of the other membrane and adjacent to the end edge of the rubber membrane.

Abstract: A building form and method of preparing molded articles thereon which comprises molding an article on the casting surface of a building form comprising a casting surface adhered to a water destructible support layer, the said casting surface comprising a water permeable polymeric film, water destructing the said support layer, water penetrating the said casting surface, and removing the molded article.

Abstract: The present invention relates to a composite sheet member having a plurality of coextruded laminar layers comprising a base layer having at least one exterior layer, said base layer being formed from a first polyblend of low grafted rubber content and said exterior layers being formed from a second polyblend having a higher grafted rubber content, said composite sheet having increased impact strength when impacted with a force through the base layer to the exterior layer.

Abstract: This disclosure relates to a laminate of several layers of rubber compounds. The laminate may be in sheet or strip form with various cross-sectional shapes. The layers in the laminate comprise rubber compounds, some of which contain agents which either assist or retard cure by irradiation so that the layers will have different physical characteristics during the manufacture of end products containing the laminate. The laminate may be cured by any known method, either irradiation or thermal, after its assembly into the final product.

Abstract: Carpeting especially suitable for use in areas subjected to heavy wear or abrasive weather includes a plurality of cured, rubber-based strips with filaments embedded in and projecting upwardly from them forming a pile on their upper surfaces. The strips lie side-to-side, and each is bonded along its bottom surface only to a vulcanized, rubber-based sheet that does not project substantially into the spaces between the elements. Apparatus and a method for making the carpeting are also disclosed.

Abstract: For securing together elastomeric substrates in surface-to-surface contact an adhesive for interposing between the substrates includes elastomer, a prepolymer or a polymerizable monomer, and a graft initiator. Molecular grafting occurs between the elastomer of the adhesive and the elastomer of both of the substrates, and after curing the layer of adhesive forms an integral assembly with the substrates, to result in a bonding strength which is much higher than is obtainable with known surface adhesives. The adhesive is of particular utility in bonding new tread bands to tire casings in the re-capping of used automobile tires.

Abstract: The present invention relates to a pneumatic tire blank adapted to be vulcanized in a vulcanizing device of the kind not employing a bellows arrangement, but having a clamping system which acts upon the interior of the bead.

Abstract: A method of surface treating elastomer surfaces comprises applying thereto a 4-substituted-1,2,4-triazoline-3,5-dione preferably in solution. The treatment improves adhesion using normal elastomer adhesives, improves resistance to peeling with flexible paints and reduces the surface tack of the elastomer. The method is advantageous over prior art chlorination and halogen donor techniques particularly in that the triazoline diones are relatively non-corrosive and non-toxic.

Abstract: Tires, especially radial carcass tires, have the properties of their sidewalls improved by forming at least the outer surface of the sidewalls from organic peroxide vulcanizates of one or more mixes of elastomers of the diene type and of the ethylene-propylene type.