Gary E Hunter

US Patent:

47801662, Oct 25, 1988

Filed:

Jun 26, 1987

Appl. No.:

7/066579

Inventors:

Gary A. Hunter - Houston TX

Assignee:

Shell Oil Company - Houston TX

International Classification:

B29H 902

US Classification:

156180

Abstract:

A method and apparatus are disclosed for the fabrication of pultruded articles. The apparatus includes a means for heating the interior of a bundle of resin-wetted reinforcing material prior to the bundle passing into a heating forming die which heats the exterior of the bundle. Insertion of a thermocouple wire into the interior of the bundle prior to the bundle passing into the heated forming die allows the temperature of the bundle interior to be monitored during the curing process that occurs within the heating forming die. Adjustment of the bundle interior temperature relative to the bundle exterior temperature eliminates stresses caused by adverse thermal gradients that normally would exist without the use of such a bundle interior heater. Use of such a bundle interior heater allows the pultrusion of parts having a greater or thicker cross section than those now normally available.

US Patent:

50984969, Mar 24, 1992

Filed:

Jun 30, 1988

Appl. No.:

7/213412

Inventors:

Walter V. Breitigam - Katy TX
Wilbur P. Ubrich - Katy TX
Gary A. Hunter - Houston TX
Georg G. Viola - Houston TX

Assignee:

Shell Oil Company - Houston TX

International Classification:

B29D 900
B29C 4330

US Classification:

156180

Abstract:

A process for preparing a postformable composite article of a heat curable thermosetting polymer having a substantial length and a non-trivial uniform cross-sectional shape. The process includes controlling the pull rate and the temperature of the heating and cooling sections of the die in response to the viscosity and the cure kinetics of the thermosetting polymer composition and (2) the non-trivial shape of the article.