TPU for Solvent Based Adhesives

Key feature

● TPU shoe material, soluble in solvent

● Excellent initial adhesive strength

● High bonding strength to a variety of substrate

● Fast crystallization rate

● Good heat resistance

Application

This series of material is suitable to be used as TPU shoe adhesive (solvent based adhesive), and used on textile Industry and others.

Features

This TPU shoe material for solvent based adhesive has good adhesion to a variety of substrates - TPU, Nylon, PVC, Leather, Synthetic Leather, Polyester, Fabrics,etc.

Processing Method

TPU shoe material can be dissolved by Solvent. The formulation of solvent based adhesive we generally suggested is one-third (1/3) each of MEK, Acetone and Toluene. In general, it depends on the customer's requirement. If you require TPU shoe material with faster volatility, you can use more Acetone. If you would like to reduce the cost by Toluene, the Max. Toluene in solvent is 30% ~ 35%. If Toluene is not allowed, you can use EAC instead. As to the actual formulation of TPU shoe adhesive, it should be adopted according to the characteristics of solvent and every customer's needs.  

Article

Type
(POLYOL)

Yellowing
resistance

Crystallization
rate

Activation
TempoC

Tack 
Time(min)
PVC vs. 
PVC, 25oC

Initial
strength 
kg/3cm
PVC vs. PVC
After 5 mins

Max. 
Toluene
%
in 
Solvent

Viscosity range 
(CPS/25oC )
15% solid 
content 
in MEK

TPUA-760

Polyester

little 
yellowing

very fast

55 ~ 65

5 ~ 10

10 ~ 16

30 ~ 35

200 ~ 3500

TPUA-1560

Caprolactone

little 
yellowing

very fast

55 ~ 65

25 ~ 50

12 ~ 18

30 ~ 35

400 ~ 3500

TPUA-142A

Caprolactone

little 
yellowing

very slow

55 ~ 65

over 8 hrs

9 ~ 15

30 ~ 35

400 ~ 2400

TPUA-173BA

Polyester

non- 
yellowing

very fast

55 ~ 65

5 ~ 10

8 ~ 12

30 ~ 35

1600 ~ 2000

TPUA-15-AA9A

Polyester

little 
yellowing

fast

60 ~ 75

8 ~ 12

 9

15

1600 ~ 2000

TPUA-15-AA3C

Polyester

little 
yellowing

fast

50 ~ 65

 8

100

 200 ~ 600

Notice: 1. These values are based on the test of our present laboratory test specimens. 

               2. The other viscosity is available.