Laripur 6325
Hard polyester TPU at Shore 62 D with 10000 psi tensile strength and 193 N/mm tear. Injection moulded technical items and footwear components.
Hard polyester TPU at Shore 62 D with 10000 psi tensile strength and 193 N/mm tear. Injection moulded technical items and footwear components.
Laripur 6325 is a polyester based TPU at Shore 62 D. COIM lists it for the injection moulding of technical items and footwear components.
This is a structural grade rather than an elastomeric one. Tensile strength is 10000 psi, tear strength 193 N/mm and the flexural modulus is 53000 N per square mm, with elongation at break down at 370 percent.
The VICAT softening point is 313 degrees F, which is what makes it usable where the softer polyester grades would creep.
| Property | Typical value |
|---|---|
| Specific gravity | 1.24 g/cm3 (ASTM D792) |
| Shore hardness | 62 D (ASTM D2240) |
| Abrasion loss | 40 mm3 (DIN 53516) |
| Tensile modulus 50 percent | 3000 psi (ASTM D412) |
| Tensile modulus 100 percent | 3400 psi (ASTM D412) |
| Tensile modulus 300 percent | 7300 psi (ASTM D412) |
| Tensile strength | 10000 psi (ASTM D412) |
| Elongation at break | 370 percent (ASTM D412) |
| Tear strength | 193 N/mm (ASTM D624) |
| VICAT softening point | 313 degrees F (ASTM D1525) |
| Flexural modulus | 53000 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.
COIM's first listed use.
Named on the data sheet.
Where the flexural modulus of 53000 N per square mm is the property being specified.
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 390 degrees F, zone 2 at 400, zone 3 at 415 and the nozzle at 400. 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 polyester based TPU.
It behaves more like a rigid engineering plastic. At a flexural modulus of 53000 N per square mm and 370 percent elongation, it is used where stiffness and tear resistance matter more than rebound. If the part has to flex repeatedly, a Shore A grade will last longer.
Laripur 6560, a PTMG polyether at Shore 65 D. COIM credits it with very good resistance to hydrolysis and microbial attack, at a similar tensile strength of 9600 psi.
COIM's sheet for 6325 publishes only a moulding profile. If the part is extruded, tell us the profile and we will point you at a grade COIM has released an extrusion version of.
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 at Shore 59 D.
Harder polyester at Shore 67 D.
Polyether at Shore 65 D, for hydrolysis resistance.
Soles, ski boots and footwear components, and how the grades are chosen.
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.