Production of oriented plastics by roll-drawing

Details Production of oriented plastics by roll-drawing Production of oriented plastics by roll-drawing

1996-01-30

1997-12-09

Thurlow, Jeffery R.

Plastic and nonmetallic article shaping or treating: processes

With measuring, testing, or inspecting

264 406, 264 407, 264175, 2642102, 2642107, 264280, 2642884, 425135, 425141, 425145, 425325, 425363, 4253823, B29C 5506

Patent

active

056956983

ABSTRACT:
A process and apparatus for the continuous solid state forming of semicrystalline polymers using roll-drawing is disclosed. The output of an extruded thick polymer profile is stabilized by a gear pump. The profile is passed through a die for the desired geometry and a cooling calibrator. The profile is heat conditioned in heating tunnels to a temperature below the melting point prior to deformation between sets of rolls. A plurality, e.g. four pairs of rolls apply both compression and tension to the polymer profile. The tension applied on the profile, the roll gap, the linear speed of the profile and its temperature are monitored and controlled for the amount of polymer deformation and relaxation allowed. High tensile modulus and strength, both in the longitudinal and transverse direction of the polymeric strip, can be achieved.

REFERENCES:
patent: 3714320 (1973-01-01), Shaw
patent: 4085187 (1978-04-01), Jenks et al.
patent: 4514351 (1985-04-01), Kaeufer et al.
patent: 4789514 (1988-12-01), Lo
patent: 4801419 (1989-01-01), Ward et al.
patent: 4820466 (1989-04-01), Zachariades
patent: 4837407 (1989-06-01), Nezu
patent: 4956140 (1990-09-01), Rolles et al.
patent: 5049347 (1991-09-01), Magill et al.
patent: 5096654 (1992-03-01), Craggs et al.
patent: 5133922 (1992-07-01), Kaeufer et al.
patent: 5234652 (1993-08-01), Woodhams et al.
patent: 5399308 (1995-03-01), Woodhams et al.
patent: 5405699 (1995-04-01), Van Erden et al.
patent: 5525391 (1996-06-01), Dipede et al.
Bigg D.M. et al., Mechanical Property Enhancement . . . , Journal of Engng. for Industry, vol. 106, 1984, pp. 109-113.
Sun D.C. et al., Structure-Property Relationships . . . , Polymer Engng. and Science, 1990, vol. 30, No. 11, pp. 635-643; vol. 29, p. 715.
Bigg D.M. et al., Fabrication of High Modulus Films . . . , Polymer Engng. and Science, Oct. 1986, vol. 26, No. 18, pp. 1254-1263.
Williams R.F. et al., Roll Clearer and Better Sheet-Faster, SPE Journal, 1971-vol. 27, pp. 42-48.
Caddell R.M., On the Tensile Behaviour of High Density . . .--Mater. Sci. Eng., 9(1972), pp. 223-229.

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