Stretch-staging of resin-based fiber-impregnated tape

Details Stretch-staging of resin-based fiber-impregnated tape Stretch-staging of resin-based fiber-impregnated tape

1981-04-27

1982-09-07

Lowe, James B.

Plastic and nonmetallic article shaping or treating: processes

Applying tensile stress to workpiece during heat curing

264346, 264347, 425445, B29C 2500

Patent

active

043483470

ABSTRACT:
A stretch-staging method is disclosed for straightening continuous fiber columns impregnated within a resin-based tape material to increase the strength and reliability of the material. The tape material is supported about the circumference of a half-cylindrical fixture and separated therefrom by a thin lubricating film to reduce surface friction. Loads of substantially equal weight are longitudinally applied at opposite ends of the tape material about the fixture, and the combination is heated in an oven to an elevated temperature for a predetermined period of time thereby stretching and staging the tape material so that distorted fiber columns are straightened and retained in a straightened condition as the resin is advanced.

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patent: 3761558 (1973-09-01), Hnitek
patent: 3954935 (1976-05-01), Kato et al.
patent: 3961006 (1976-06-01), Brandij et al.

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