Grade reference

Formolon 680

Suspension resin from Formosa Plastics Corporation, U.S.A., K-value 70.

All grades · sourced from Formosa Plastics Corporation, U.S.A. · checked 19 August 2026

Producer
Formosa Plastics Corporation, U.S.A.
Polymer
PVC
Type
Suspension resin
K-value
70
Producer lists it for
Flexible calendering · Flexible extrusion

What that means in practice

K70, squarely flexible. Formosa list it for calendering and extrusion only — no wire and cable, which the 685 grades at the same K-value do carry. Same number, different intended job.

If K-values are not something you work with daily, our PVC grades and pricing guide explains what the number is measuring and how rigid, flexible, resin, compound and regrind differ.

What to check before buying Formolon 680

  • High-K grades are bought for plasticiser uptake, so ask about porosity and how consistently the batch absorbs.
  • If the end use is wire, cable or anything food-contact, the approval documentation matters more than the K-value.
  • Ask for a batch certificate of analysis rather than the generic datasheet — at this end of the range the batch is what you are buying.

Buying or selling this?

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