Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Patent
1974-04-15
1976-12-14
Whitby, Edward G.
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
156175, 156244, 156309, 156391, 156429, 156446, 156500, 264173, 425114, 4251311, 425516, B65H 8100
Patent
active
039973824
ABSTRACT:
A method of manufacturing a reinforced flexible tube in which a hard synthetic resin spiral core is embedded in and fused to a soft synthetic resin matrix through the medium of a semi-hard synthetic resin adhesive layer and the apparatus for carrying out the method of manufacturing the tube. Hard and semi-hard synthetic resin materials are simultaneously extruded from extruders to form a first composite linear element in which these two separate materials are firmly bonded together owing to the small extruding temperature difference between these two separate materials. The first composite linear element is preheated to make the temperature difference between the linear element and a soft synthetic resin material to be extruded on the linear element small. Then, the soft synthetic resin material is extruded around the linear element to form a second composite linear element in which the small temperature difference between the linear element and the soft synthetic resin material causes these two materials to firmly bond each other. The second composite linear element is wound around at least three rotary shafts each arranged horizontally and rotatably journaled at its one end by a supporting frame and having along its free ends a splined portion, the centers of said rotary shafts being arranged at vertexes of a regular polygon, respectively. The rotary shafts are rotated such that at least three segmental sleeves each slidably fitted into said splined portion are selectively reciprocated.
REFERENCES:
patent: 2398876 (1946-04-01), Bailey
patent: 3118800 (1964-01-01), Snelling
patent: 3300355 (1967-01-01), Adams
patent: 3706624 (1974-12-01), Rinker
Kakuichi Mfg. Co., Ltd.
Whitby Edward G.
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