DUWAI DWIS - 3:1 4:1 Glued Double Wall Heat Shrink Tubing
APPLICATIONS
The outer layer is made of radiation cross-linked polyolefin, and the inner layer is coated with hot melt adhesive. After heating, the outer protective layer is formed, and the inner hot melt adhesive forms an adhesive layer which can protect against water and fix the object firmly, and has good adhesion to rubber, PVC, PE, and aluminum. This tubing can be used in various fields of repairing wires and waterproof requirements.
APPROVALS / SPECIFICATIONS
UL224, 125℃ VW-1 600V
OPERATING TEMPERATURE RANGE
- Continuous operating temperature: -45℃ ~ 110℃
- Minimum shrink temperature: 80℃
- Full recovery temperature: Above 110˚C
- Temperature withstands of outer tube: 125˚C
COLOR
Standard color: black, (Other colors, special sizes, and cut pieces are available on request.)
- Shrink ratio: 3:1 / 4:1
- Excellent waterproof performance
- Flexible, high flame retardant
- Excellent physical, chemical and electrical performance
- EVA and high melting temperature polyamide (PA) hot melt adhesive are selectable based on your applications
- Compliance with RoHS and REACH environmental regulations
The adhesive double-walled heat shrinkable tube is made of a double layer of soft polyolefin and hot melt adhesive. The outer polyolefin layer is soft and the inner wall hot melt adhesive can buffer mechanical strain and have strong sealing properties. The main function is to seal, waterproof, anti-corrosion, and prevent air leakage. It is used for insulation protection of wires and cables that need to be sealed, waterproof, and moisture-proof. The special glue coating process can provide insulation, sealing, waterproof and moisture-proof protection for intermediate connectors, terminals, automobile wires, marine cables, wiring harnesses, metal pipes, etc. It is especially suitable for the shipbuilding industry and can be well used in ship offshore work and marine cable joints. It is mainly used for waterproofing and moisture-proofing of wire connections, automobile wires, wiring harnesses, and metal pipes, as well as insulation and sealing protection. Long-term working temperature: -45℃ to +125℃. Minimum shrinkage temperature: 70℃, complete shrinkage temperature: 110℃.
Double-walled heat shrink tubing is made of a double-layer structure of polyolefin flame-retardant material and hot-melt adhesive. The outer layer of polyolefin is soft, flame-retardant, and shrinks at low temperatures. The inner layer of hot-melt adhesive can buffer mechanical strain and has strong sealing properties. It is often used when the protected object is deformed due to high temperature. It is easy to shrink at low temperature to prevent damage to the product when shrinking at high temperature. UV resistant, outer layer flame retardant.
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Technical Data |
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Property |
Specification Requirement |
Test Method |
Typical Value |
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Longitudinal change |
-15%~15% |
ASTM D2671 |
Pass |
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Tensile strength |
≥10.3MPa |
ASTM D2671 |
≥12MPa |
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Elongation at break |
≥200% |
ASTM D2671 |
≥400% |
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Tensile strength after aging |
70% of initial value |
ASTM D2671 |
≥90% |
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Elongation at break after aging |
≥100% |
ASTM D2671 |
≥300% |
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Heat shock |
No cracking |
ASTM D2671 |
No cracking |
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Low temperature flexibility |
No cracking |
ASTM D2671 |
No cracking |
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Dielectric voltage withstand |
AC2500V/60S |
ASTM D2671 |
No breakdown |
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Volume resistivity |
≥1014Ω‧cm |
ASTM D2671 |
≥1014Ω‧cm |
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Copper corrosion |
No corrosion |
ASTM D2671 |
No corrosion |
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Flammability |
VW-1 |
UL224 |
Pass |
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Hot melt adhesive |
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Property |
Test Method |
Typical Value |
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Softening point |
ASTM E28 |
90℃ |
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Specification |
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Part Number |
Size |
As supplied |
After recovered |
Standard Length |
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mm |
Inch |
I.D. |
W.T. |
I.D. |
W.T. |
Adhesive thickness |
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DWIS-3X Shrink ratio |
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DWIS3X0032 |
3.2 |
1/8 |
3.2 |
0.45 |
1.0 |
1.00±0.28 |
0.45±0.10 |
200 |
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DWIS3X0048 |
4.8 |
3/16 |
4.8 |
0.45 |
1.6 |
1.00±0.28 |
0.50±0.15 |
100 |
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DWIS3X0064 |
6.4 |
1/4 |
6.4 |
0.50 |
2.0 |
1.00±0.28 |
0.50±0.15 |
100 |
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DWIS3X0095 |
9.5 |
3/8 |
9.5 |
0.50 |
3.0 |
1.40±0.28 |
0.60±0.15 |
50 |
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DWIS3X0127 |
12.7 |
1/2 |
12.7 |
0.65 |
4.0 |
1.78±0.38 |
0.76±0.20 |
1.22 |
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DWIS3X0150 |
15.0 |
5/8 |
15.0 |
0.60 |
5.0 |
1.90±0.38 |
0.76±0.20 |
1.22 |
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DWIS3X0191 |
19.1 |
3/4 |
19.1 |
0.70 |
6.0 |
2.25±0.55 |
0.76±0.20 |
1.22 |
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DWIS3X0254 |
25.4 |
1 |
25.0 |
0.80 |
8.0 |
2.54±0.55 |
1.00±0.25 |
1.22 |
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DWIS3X0381 |
38.1 |
1 1/2 |
38.1 |
0.80 |
13.0 |
2.54±0.55 |
1.00±0.25 |
1.22 |
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Part Number |
Size |
As supplied |
After recovered |
Standard Length |
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mm |
Inch |
I.D. |
W.T. |
I.D. |
W.T. |
Adhesive thickness |
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DWIS-4X Shrink ratio |
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DWIS4X0040 |
4 |
3/16 |
4.0 |
0.40 |
1.0 |
1.00±0.28 |
0.45±0.10 |
1.22 |
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DWIS4X0080 |
8 |
5/16 |
8.0 |
0.45 |
2.0 |
1.00±0.28 |
0.50±0.10 |
1.22 |
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DWIS4X0120 |
12 |
1/2 |
12.0 |
0.45 |
3.0 |
1.40±0.28 |
0.60±0.10 |
1.22 |
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DWIS4X0160 |
16 |
5/8 |
16.0 |
0.55 |
4.0 |
1.78±0.38 |
0.76±0.15 |
1.22 |
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DWIS4X0240 |
24 |
1 |
24.0 |
0.65 |
6.0 |
2.25±0.55 |
0.76±0.15 |
1.22 |
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DWIS4X0320 |
32 |
1 1/4 |
32.0 |
0.70 |
8.0 |
2.54±0.55 |
1.00±0.20 |
1.22 |
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DWIS4X0500 |
50 |
2 |
50.0 |
0.70 |
13.0 |
2.54±0.55 |
1.00±0.20 |
1.22 |
