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AssigneeMitsuboshi Belting Ltd.
InventorHitoshi Hasaka
Estimating the term…
A method of bonding an ethylene.α-olefin rubber composition to a fiber cord. The method includes the steps of: treating a fiber cord with a first treating solution that is at least one of an isocyanate compound and an epoxy compound; after treating the fiber cord with the first treating solution, treating the fiber cord with a second treating solution including resorcinol-formalin-rubber latex; after treating the fiber cord with the second treating solution, treating the fiber cord with a third treating solution including a halogenated polymer and a vulcanizing agent; and after treating the fiber cord with the third treating solution, vulcanization-bonding an unvulcanized ethylene.α-olefin rubber composition to the fiber cord.
A method of bonding an ethylene-α-olefin rubber composition to a fiber cord, the method comprising the steps of:
A method of bonding an ethylene-α-olefin rubber composition to a fiber cord, said method comprising the steps of:
A method of bonding an ethylene-α-olefin rubber composition to a fiber cord, the method comprising the steps of:
A method of manufacturing an automotive belt involving the bonding an ethylene-α-olefin rubber composition to a fiber cord, the method comprising the steps of:
Dependencies are inferred from the claim text.
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No related US applications are recorded in the indexed filing history.
Layered products comprising a layer of natural or synthetic rubber: next to a fibrous or filamentary layer
Layered products comprising a layer of natural or synthetic rubber: comprising rubber as the main or only constituent of a layer, which is next to…
Layered products comprising a layer of natural or synthetic rubber: comprising synthetic rubber copolymers
Reinforcing macromolecular compounds with loose or coherent fibrous material: using pretreated fibrous materials
Term ended 15 Dec 2019 (estimated)
USPTO file history isn’t available for this patent, so only indexed dates are shown.
1. Field of the Invention
This invention relates to fiber cords, as used as load carrying members in power transmission belts, and, more particularly, to a method of bonding an ethylene.α-olefin rubber composition to such a fiber cord.
2. Background Art
FIG. 1 is a cross-sectional view of a V-ribbed belt having fiber load carrying cords with ethylene.α-olefin rubber composition bonded thereto, according to the present invention;
FIG. 2 is a cross-sectional view of a V-belt having fiber load carrying cords with ethylene.α-olefin rubber composition bonded thereto, according to the present invention;
FIG. 3 is a graph showing the relationship between the ratio of a chlorinated rubber and bond strength; and
Referring initially to FIG. 1, one form of power transmission belt, with which the present invention can be practiced, is shown at 10. The belt 10 is a V-ribbed belt having a body 12 within which load carrying cords 14 are embedded. Fiber yarns are twisted into high strength, low elongation, cords 14. The cords 14 are embedded in a cushion rubber layer 16 and define the belt neutral plane. Inside of the neutral plane is the belt compression section 18. The compression section 18 is defined in part by a rubber layer 20, bonded to the cushion rubber layer 16. The rubber layer 20 has individual, laterally spaced, ribs 22 formed therein. The ribs 22 extend lengthwise of the belt 10. Two rubberized canvas layers 24 are applied to the outside of the cushion rubber layer 16.
The rubber of the layer 20 may contain short, reinforcing fibers 26 which extend generally in a lateral direction with respect to the belt body 12. The fibers 26 may be at least one of aramid, nylon, polyester, vinylon, and cotton, preferably in an amount of 1-50 parts by weight, and more preferably 5-25 parts by weight. The rubber in the cushion rubber layer 16 is preferably made from an ethylene-α-olefin elastomer which is resistant to heat, firmly bondable to the load carrying cords 14, and readily vulcanizable with sulfur. If necessary, reinforcement such as carbon black and silica, filler such as calcium carbonate and talc, plasticizers, stabilizers, processing aids, and colorants, commonly used in rubber compositions, may be employed.
The amount of sulfur used in the cushion rubber layer 16 is preferably in the range of 0.5 to 3.0 parts by weight per 100 parts by weight of the ethylene-α-olefin elastomer that is used.