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[mauro]

My friend is a polymer engineer and has some neat additives that may increase the strenght, salt resistance and elasticity of pvc worms.
He told me that in order to best help me he needs to know what the plastic formulation is.  Does anyone know what percentages by mass of pvc and other components is typcially used or of a specific formulation used by a manufacturer?   I plan to make a batch of worms with and without these additives and see how they turn out.

M.

[crash]

here is some things I looked up...I hope it helps

A typical prior art plastisol formula is as follows:

15-20 percent vinyl resin;

50-60 percent plasticizer;

0.5-3 percent stabilizer;

15-25 percent hydrocarbon extender; and

1-5 percent pigments.

This formula produces a soft, pliable plastic lure suitable for the market.


there is more info here  http://www.patentstorm.us/patents/6113895/description.html

[mauro]

Thanks for the info.
I would not have found this other formulation without your link and information.   
My friend's company uses titanate compounds to improve the properties of all forms of plastics.  I hope I can try it out and make a more flexible and stronger worm that still takes salt readily.


http://www.freepatentsonline.com/4530179.html

Most formulas look like this:

Portions are by weight

Polyvinyl chloride, dispersion grade: 100

Plasticizer (dioctyl phthalate): 350

Secondary plasticizer (hydrocarbon): 18

Stabilizer (metal, phosphite type): 3

Pigment: 5

Plus one to three percent by weight salt  (3 - 9 )

[Bassinkorea]

Good luck Mauro, and let us know how it goes 

[mauro]

Additives did not show up yet.    But we did make some baseline plastics! 
I should post some photos....