plastic used in stiffeners and tuck tabs?

[pchapman 279]

Any idea what kind of plastic is being used as stiffeners for secondary riser covers or tuck tabs at the shoulders?

Main flap tuck tabs are often .060" plastic, I hear, but flexible secondary riser covers might need to be .030" to keep them thin and flexible.

From different sources I've heard of HDPE, LDPE (for more flexibility) and Nylon MDS being used for stiffening.

Peter Chapman

[AggieDave 6]

Lexan.

--"When I die, may I be surrounded by scattered chrome and burning gasoline."

[PhreeZone 20]

I don't think Lexan is that flexible. I aways thought it was HDPE.

Yesterday is history
And tomorrow is a mystery

Parachutemanuals.com

[AggieDave 6]

Lexan is very flexable, as long as its not real thick. Sort of like a body on a RC car (a *real* one, not a radio shack special), its thin, strong and flexible.

I had asked a gear manufacture this once (damned if I can remember which one) and they responded with Lexan. Of course, Lexan can be very very stong and stiff (i.e. a plane's windshield), though.

--"When I die, may I be surrounded by scattered chrome and burning gasoline."

[HeatherB 0]

Nylatron

[AggieDave 6]

And I've learned something new today. Sweet! Now I'm racking my brain trying to remember where/who told me it was Lexan, I could have sworn it was a gear manufacture, though...

--"When I die, may I be surrounded by scattered chrome and burning gasoline."

[riggerrob 643]

Rigging Innovations uses MDS plastic in thicknesses ranging from 20 thou to 40 thou.
20 thou is used where you need flexibility i.e. riser cover tuck tabs and 40 thou is used in high load areas like reinforcements around container grommets.