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Pu Sandal Shoe Sole System

INTRODUCTION

PU Sandal shoe-sole system is the polyester-based PU system materials, consist of four components: polyol, ISO, hardner and catalyst. The processing of this system is two components. In this case the catalyst, harder, blowing agent and pigment should be mixed thoroughly with the polyol component EXD-3070A before reaction with ISO component EXD-3022B. This system material is used to produce low density and medium hardness Sandal, casual & cloth shoes. Processing of the system is normally performed with injection machine.

TYPICAL PROCESSING & REACTION PARAMETER

Hardness(Shore A)

55

60

65

Adding amount

g /(18KG EXD-3070A)

Y-01

0

250

500

EXD-03C

250

250

250

Blowing agent

(Water)

75

75

75

Pigment

800

800

800

Reaction Ratio by weight

Mixture

(EXD-3070A

& additives)

100

100

100

EXD-3022B

85-88

92-94

98-101

Material temperature(A/B,℃)

45/40

45/40

45/40

Mould temperature(℃)

45

45

45

Cream time(s)

6-8

6-8

6-8

Rise time(s)

30-35

30-35

30-35

FRD(g/cm3

0.24-0.26

0.24-0.26

0.24-0.26

Product density(g/cm3

0.40-0.45

0.40-0.45

0.40-0.45

Demould time(min)

2-2.5

2-2.5

2-2.5