LPR 7725

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GENERAL DESCRIPTION LARIPUR 7725/7725EG is a polyester based TPU. The standard version is designed e.g. for injection moulding of sport soles, wheels, screen elements, masks and technical items while EG one for the extrusion of hoses, profile, transmission belts and film.
 
TYPICAL CHEMICAL- PHYSICAL PROPERTIES
 
The following information is not intended to be used as sales specifications.
 

Physical Properties

Typical Value

Unit

Test Method

Specific Gravity

1.25

gr/cm2

DIN 53479

Shore Hardness

67

D

DIN 53505

Abrasion Loss

40

mm3

DIN 53516

Tensile Modulus: 50%

26.5

N/mm2

DIN 53504

100%

28.2

N/mm2

DIN 53504

300%

50.5

N/mm2

DIN 53504

Tensile Strength

71.2

N/mm2

DIN 53504

Elongation at Break

380

%

DIN 53504

Tear Strength

220

N/mm

DIN 53515

Flexural Modulus

640

N/mm2

ISO 178

VICAT Softening Point

185

ÇC

ISO 306

Torsion Test + 20°C

125

N/mm2

DIN53447

- 20°C

500

N/mm2

DIN53447

Ratio -20°C/+20°C

4

 

 

Impact Test - 20°C

3.5

KJ/m2

ASTM D256

This technical note has been written based on our present best knowledge but the above mentioned data have not to be released as a specification for the material in object.
 
The properties reported in this Technical Data Sheet are determined on conditioned specimens obtained from injected test plates and represent an average of values gathered from a significant number of production lots.
 
Even if we guarantee the quality consistency of the LARIPUR products, we could periodically issue updated versions of this Technical Data Sheet and consequently modify the respective sales specifications.
 
The international standards here indicated have to be intended as a reference to carry out the various tests, but the choice of available options and any possible variation are mentioned in our respective internal standards.
 
The grades suitable for extrusion are identified with the EG or AE end code and therefore they have to be ordered with such code when used in this application.
 
LARIPUR 7725/7725EG Page 1/2
 
STORAGE AND STABILITY
 
LARIPUR 7725/7725EG is supplied in regular pellet form and it is packaged in 25 kg bags or 500 kg and 1000 kg octabins
 
LARIPUR 7725/7725EG must be stored in its original and sealed containers and kept in a dry and well ventilated place; avoiding the direct sun radiation.
 
The shelf life of LARIPUR 7725/7725EG will be 6 months from the date of delivery to the final customer, when stored in its original sealed packaging and in proper conditions
 
SAFETY The product is not considered to be dangerous, nevertheless we suggest to read the Material Safety Data Sheet before handling.
 
PROCESSING RECOMMENDATIONS
 
Material needs to be dried prior processing at 80-90ÄC for 3 hours, preferably using a dehumidifyin a dew point lower than -30ÄC.
 
Suggested moulding temperature profile Suggested extrusion temperature profile

 

°C

Zone 1

210

Zone 2

215

Zone 3

220

Nozzle

215

Being affected by type of machine used, processing conditions and downstream equipment, th given above has to be considered as just indic

LPR 7725 Physical property table download