Check Your 20 oz. Triaxial

Triaxial roving has had the same makup ever since I first heard about it. The 0 degree has the same weight as the combined weight of the +- 45s.
I have a 25′ daycharter cat being built in Seattle. The sample testing done by Gougeons gave very low results. And the burn test reveled that it only had 20% 0 degree fiber. No wonder the low numbers.
Orca has two different 20 oz. triaxial spec sheets apparently. Be very careful which product you get.
The one that I am used to has 354 gsm for the 0 degree and 200 gsm for each of the +-45s.
The other one has a 0 degree of only 142 gsm and +-45s of 292 gsm. each. That is clearly an inferior product but it is still called 20 oz. triaxial. Beware. First the bad one, then below, the good 20 oz. triaxial. I wonder who thought skimping on the 0 degrees would be smart?

One thought on “Check Your 20 oz. Triaxial”

  1. Fabrics vary. Vectorply makes 4 triaxials.

    3 of them all have the same +/-45 weight (364 gm/m2)
    The 0 degree are 304 / 434 / 521 gm/m2
    (19 oz/22 oz /24 oz nominal description)

    Just have to read the data sheet for each product and not assume that all triaxials are the same. In your laminate spec, better write out what you expect the cloth to be made from.

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