Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Patent
1980-10-24
1982-08-31
Robinson, Ellis P.
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
138125, 156156, 156187, 428 36, 428441, 428442, 428422, B32B 3126
Patent
active
043470904
ABSTRACT:
A laminated tubular structure is obtained by a process in which a fabric sleeve is applied about a tube of thermoplastic polymer, following which plugs are inserted into the opposing ends of the liner. A liquid, such as water, is then introduced to the liner, and the liner is rotated about a horizontal axis while heat is applied to the exterior surface of the liner, causing the surface to become molten. The heat also causes vaporization of some of the liquid in the liner and the resulting vapor pressure causes the molten surface of the liner to expand radially into the interstices of the fabric sleeve. The inner surface of the liner remains solid and form-maintaining by reason of the liquid within the liner and heat absorbed on vaporization of liquid. Upon cooling there is obtained a good mechanical bond between the liner and sleeve. The liner-sleeve composite can be further reinforced by a surrounding layer of a thermosetting resin containing reinforcing fibers, the resin layer being bonded to the composite by means of the sleeve.
REFERENCES:
patent: 1798798 (1931-03-01), Leguillon
patent: 2752952 (1956-07-01), Dauphinais
patent: 2783173 (1957-02-01), Walker et al.
patent: 2888042 (1959-05-01), St. John et al.
patent: 2974713 (1961-03-01), Hydrich
patent: 3414448 (1968-12-01), Harpfer
patent: 4104095 (1978-08-01), Shaw
patent: 4282905 (1981-08-01), Dopkin
Anderson Edward P.
Curran Donald G.
Bunnell Plastics, Inc.
Robinson Ellis P.
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