Laripur 8860EG
PTMG polyether TPU at Shore 86 A with very good resistance to hydrolysis and microbial attack. Hose, cable, profile and film extrusion, with a UV stabilized 8860EUV version.
PTMG polyether TPU at Shore 86 A with very good resistance to hydrolysis and microbial attack. Hose, cable, profile and film extrusion, with a UV stabilized 8860EUV version.
Laripur 8860EG is a PTMG polyether based TPU at Shore 86 A. COIM states that it has very good resistance to hydrolysis and microbial attack.
COIM lists the standard version for the injection of technical items and the EG version for the extrusion of hose, cable, profile and film. A UV stabilized version of the extrusion grade is available as 8860EUV, which is the one to specify for anything that lives outdoors.
Tensile strength is 6380 psi at 550 percent elongation, with tear strength of 88 N/mm and a VICAT softening point of 171 degrees F. Specific gravity is 1.12, among the lowest in the range, so a given weight of pellets yields more part.
Order the EG version when the material is going into a die. COIM identifies its extrusion versions with an end code after the grade number, and that code has to be on the purchase order.
| Property | Typical value |
|---|---|
| Specific gravity | 1.12 g/cm3 (ASTM D792) |
| Shore hardness | 86 A (ASTM D2240) |
| Abrasion loss | 35 mm3 (DIN 53516) |
| Tensile modulus 50 percent | 755 psi (ASTM D412) |
| Tensile modulus 100 percent | 1075 psi (ASTM D412) |
| Tensile modulus 300 percent | 1200 psi (ASTM D412) |
| Tensile strength | 6380 psi (ASTM D412) |
| Elongation at break | 550 percent (ASTM D412) |
| Tear strength | 88 N/mm (ASTM D624) |
| VICAT softening point | 171 degrees F (ASTM D1525) |
| UV stabilized version | 8860EUV |
| Form | Regular pellet |
Typical values from the manufacturer's technical data sheet. They describe the product, they are not a specification. We will send the current TDS and the batch documentation your qualification needs.
Tell us the binder system, the property you are targeting, and the volume you expect. We will confirm the grade, send the documentation, and ship a sample from North American stock.
Extrusion in the EG version.
COIM's first listed extrusion use.
Extrusion in the EG version.
The 8860EUV version is UV stabilized.
The standard version.
COIM states very good resistance to hydrolysis and microbial attack.
Dry before processing at 175 to 195 degrees F for 3 hours, preferably in a dehumidifying drier fed by air with a dew point below minus 22 degrees F. Skipping the drying step is the most common cause of splay and bubbles in a TPU part.
COIM's suggested moulding profile runs zone 1 at 365 degrees F, zone 2 at 375, zone 3 at 385 and the nozzle at 375. The suggested extrusion profile runs zone 1 at 375, zone 2 at 385, zone 3 at 395, zone 4 at 390, adapter 385 and die 375. Machine, screw and downstream equipment all move these, so treat them as a starting point.
Package sizes: 25 kg bags, or 500 kg and 1000 kg octabins.
Storage: Six months from the date of delivery, in the original sealed packaging, in a dry well ventilated place out of direct sun.
COIM does not consider the product dangerous. Read the safety data sheet before handling.
UV stabilized. 8860EUV is the UV stabilized version of the 8860EG extrusion grade. Specify it for anything that sees sunlight in service. The code has to be on the purchase order.
PTMG polyether. COIM states very good resistance to hydrolysis and microbial attack, which is the reason to choose this chemistry over a polyester grade at the same hardness.
Any aromatic TPU will discolour under UV over time. That is why the EUV version exists. If colour hold matters as much as mechanical retention, say so and we will confirm what COIM can support for the exposure you expect.
Laripur 8025 at Shore 84 A or 8225 at Shore 83 A. Both are stronger in tensile terms, 7900 and 8500 psi against 6380 psi here, and neither carries the hydrolysis resistance.
Yes. We send the Technical Data Sheet (TDS) and Safety Data Sheet (SDS) on request, in the manufacturer's current revision. Use Request TDS or SDS above and tell us what your qualification review needs.
Polyether at Shore 88 A, with halogen free flame retardant versions.
Softer polyether at Shore 77 A.
Polyester at Shore 83 A, stronger, for dry service.
Hose, profile, belt and film, and what an extrusion grade has to do differently.
Which chemistry survives hot water, and which survives oil and abrasion.
How to specify a grade when you have a part and not a grade number.
Drying, splay, sink and the faults that come back to moisture.