Plastic and nonmetallic article shaping or treating: processes – With measuring – testing – or inspecting – Controlling rate of movement of molding material or its...
Patent
1994-11-18
1995-09-26
Vargot, Mathieu D.
Plastic and nonmetallic article shaping or treating: processes
With measuring, testing, or inspecting
Controlling rate of movement of molding material or its...
156149, 264 85, 264103, 2642092, 2642095, 26417115, 26417215, 425113, B29C 4706
Patent
active
054532299
ABSTRACT:
A method for producing continuously a long reinforced hose having a plurality of reinforcement layers. An inner reinforcement layer is formed by braiding steel wires or fibers on a mandrel and a rubber is extruded onto the inner surface of the reinforcement layer to form an inner rubber layer therein. An adhesion rubber is then extruded onto the outer surface of the inner reinforcement layer to form an adhesion rubber layer thereon and at the same time an outermost reinforcement layer is formed on the adhesion rubber layer by braiding on a mandrel. The unvulcanized hose including the respective layers is pulled at a speed higher than the braiding speed of the outermost reinforcement layer, thereby firmly joining the reinforcement layers and then pulled at a lower speed but still higher than the braiding speed, thereby more firmly urging both the reinforcement layers to each other. While the pulling speed is kept at the lower speed, a rubber sheath is formed on the hose and the unvulcanized hose is then vulcanized.
REFERENCES:
patent: 3994761 (1976-11-01), Higbee
patent: 4490316 (1984-12-01), Satzler
patent: 4517039 (1985-05-01), Satzler
patent: 4604155 (1986-08-01), McKiernan
patent: 4668319 (1987-05-01), Piccoli
patent: 4952262 (1990-08-01), Washkewicz et al.
patent: 5019309 (1991-05-01), Brunhofer
Bridgestone Corporation
Vargot Mathieu D.
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