Liquid curing for rubber hose extrusion
Liquid curing for rubber hose extrusion
(OP)
We have one product that currently being produced using extrusion with liquid curing (hot oil).
The end products tend to be sticky. Even with silicon bath to prevent sticky during handling & packaging, eventually the products will still end up stick to one another while in packaging.
We thought it's caused by the products overcured or undercured. We tried adjust the temperature but still sticky.
1) How to determined if one compound is undercured or overcured (reversion)? Any testing?
2) If we were to get rid of the silicon, how to make it non-sticky?
3) any other reason of product being sticky other than it's undercured/overcured?
The end products tend to be sticky. Even with silicon bath to prevent sticky during handling & packaging, eventually the products will still end up stick to one another while in packaging.
We thought it's caused by the products overcured or undercured. We tried adjust the temperature but still sticky.
1) How to determined if one compound is undercured or overcured (reversion)? Any testing?
2) If we were to get rid of the silicon, how to make it non-sticky?
3) any other reason of product being sticky other than it's undercured/overcured?





RE: Liquid curing for rubber hose extrusion
forumtowers.com
RE: Liquid curing for rubber hose extrusion
RE: Liquid curing for rubber hose extrusion
we're using natural rubber.
@btrueblood
thanks for the great ideas! thing is, we hope there wouldnt be additional process. lol.
but yes will give it a try and see if that really helps. if it is, meaning by hook or by crook it need to be done. thanks!
RE: Liquid curing for rubber hose extrusion
forumtowers.com
RE: Liquid curing for rubber hose extrusion
RE: Liquid curing for rubber hose extrusion
One point I ought to add about using oil baths is the fact that your product will probably float on the surface of the oil unless either its SG is higher than that of the oil or, you prevent the tube/hose from floating by using rods to hold it under the surface of the oil so the whole of the tube's/hose's surface will be cured.
forumtowers.com
RE: Liquid curing for rubber hose extrusion
RE: Liquid curing for rubber hose extrusion
Another issue that we face with another compound though the same process is blister. We've tried 2, 3 and 4 minutes residence time - all turned out with blisters. Let alone to check if it's under/over cured. Could there be possibility the problem is with the compound?
RE: Liquid curing for rubber hose extrusion
forumtowers.com