Grade reference
Formolon 680
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?
Browse the board to see what is listed today — public, no account needed. Nothing matching? Post a Wanted requirement with the grade and tonnage you need and sellers come to you. Selling it? List it — free, no commission.