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Product Group
Thermoplastic polyurethane resin (TPU)

SDH Series

Addtime: 2018-1-30

                  WellthaneTM SDH Series

 

Description
SDH series is a special kind of linear thermoplastic Polyurethane Elastomer, which is designed for TPU Hotmelt film. It exhibits good toughness, wear resistance, elasticity and excellent bonding strength for TPU, PVC, Nylon, Polyester, fabrics, leather etc.

 

Application
Toe-Puffs&Counters, hot-melt adhesive films and tapes, Fabric coatings, Seam Sealing Tapes, shoe materials etc,Toe-Puffs, high-end interlining, heat transfer printing industry, textile, etc.

 

Properties 

 

Items

Methods

Units

Grade

SDH390

SDH670

SDH780

SDH790

Density

ASTM D 792

g/cm3

1.2

1.20

1.20

1.20

Hardness

ASTM D2240

Shore A

95

75

80

90

Tensile Strength

ASTM D412

MPa

22

15

20

40

Elongation at Break

ASTM D412

%

700

600

500

450

Tear Strength

ASTM D624

Kn/m

120

-32

——

110

Tg

DSC

°C

——

——

-30

-15

Tm

DSC

°C

——

——

——

135

Flow-beginning temperature

——

°C

58

110

95

140

MFR(150°C, 2.16kg)

ASTM D1238c

g/10min

25

115

6

——

R&B softening point

ASTM D6593

°C

80

130

——

155

Crystallization rate

——

——

Very Fast

Slow

——

Fast

Tack-free time

——

min

3-4

8

6

2

 

 

 

 























These products can only be ordered in typical quantities. Please contact your sales representative for details.

 

 

 

Processing Guide 

Extrusion: 

Zones

Set Value

SDH390

SDH670

SDH780

SDH790

Die(°C)

110

130

145

165

Adaptor(°C)

120

150

150

170

Metering(°C)

110

140

150

170

Compression(°C)

100

130

140

160

Feeding(°C)

85

110

130

140

 

Packaging
SDH series is packaged in the form of white pellets in paper-plastic bags of 25 Kg net weight (1000 Kg/pallet). 

Storage
SDH series should be inspected to assure containers are not broken during transportation. Containers should be stored in a cool and dry environment, and should be brought to room temperature before opening in order to prevent condensation. Once being used, containers with residual materials should be sealed. It is necessary to cover the feed hopper of the processing machine.

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