Laripur 5725
Polyester TPU at Shore 56 D with 9500 psi tensile strength. Technical items, sport soles and cattle tags, with 5725EG for hose, profile, belt and film extrusion.
Polyester TPU at Shore 56 D with 9500 psi tensile strength. Technical items, sport soles and cattle tags, with 5725EG for hose, profile, belt and film extrusion.
Laripur 5725 is a polyester based TPU at Shore 56 D. COIM lists the standard version for technical items, sport soles and cattle tags, and the 5725EG version for the extrusion of hoses, profiles, transmission belts and films.
Tensile strength is 9500 psi and tear strength 163 N/mm, with a flexural modulus of 27000 N per square mm. Elongation at break is 410 percent, lower than the softer grades, which is what a harder TPU trades away.
The VICAT softening point is 280 degrees F. Abrasion loss is 35 cubic mm by DIN 53516.
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 | 1.23 g/cm3 (ASTM D792) |
| Shore hardness | 56 D (ASTM D2240) |
| Abrasion loss | 35 mm3 (DIN 53516) |
| Tensile modulus 50 percent | 2200 psi (ASTM D412) |
| Tensile modulus 100 percent | 2600 psi (ASTM D412) |
| Tensile modulus 300 percent | 6600 psi (ASTM D412) |
| Tensile strength | 9500 psi (ASTM D412) |
| Elongation at break | 410 percent (ASTM D412) |
| Tear strength | 163 N/mm (ASTM D624) |
| VICAT softening point | 280 degrees F (ASTM D1525) |
| Flexural modulus | 27000 N/mm2 (ASTM D790) |
| 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 5725EG version.
Listed by COIM for the extrusion version.
Extruded film in the EG version.
The standard version is made for it.
One of COIM's stated uses.
Named on the data sheet.
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 380 degrees F, zone 2 at 400, zone 3 at 415 and the nozzle at 400. The suggested extrusion profile runs zone 1 at 400, zone 2 at 405, zone 3 at 415, zone 4 at 420, adapter 415 and die 405. 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.
Polyester. COIM's data sheet describes it as a quality polyester based TPU. That is the chemistry with the abrasion and oil resistance, and the one that hydrolyses in prolonged hot wet service.
Five points harder and stronger. 5725 is Shore 56 D at 9500 psi tensile and 163 N/mm tear; 5225 is Shore 51 D at 9000 psi and 145 N/mm. Elongation drops from 460 to 410 percent, which is the cost of the extra stiffness.
Laripur 5760, a PTMG polyether at the same Shore 56 D. Tensile strength is 9000 psi against 9500 psi here, and COIM credits it with very good resistance to hydrolysis and microbial attack.
Yes. Three hours at 175 to 195 degrees F in a dehumidifying drier with the air dew point below minus 22 degrees F. This applies to every Laripur grade.
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.
Softer polyester in the same family, Shore 51 D.
Harder polyester at Shore 59 D.
Polyether at the same Shore 56 D, for hydrolysis resistance.
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.
What Shore A and Shore D actually measure, and where the scales overlap.