Swelling Tape

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Swelling Tape
Accumulated extensive industry experience over 14 years
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Product Parameters
OPS heat shrink film or TPU film coated with a unique electrolyte resistant acrylic layer. It is mainly
used in the final part of cylindrical power battery cells. After the electrolyte is injected, it expands
and contracts to fix the jelly roll and the steel case to improve the impact resistance.

Stick on - electrolyte
Cylindrical battery - Stick on with Swelling Tape - Swelling Tape swells

Comparison of thickness before and after injection:
44：Before liquid injection at 44 µm thickness - 158：After liquid injection at 44 µm thickness - 54：Before liquid injection at 54 µm thickness - 186：After liquid injection at 54 µm thickness

Specification (* Customizable items)
Model YHO44-101 YH054-101
Carrier thickness (μm) 40 ± 2 50 ± 2
Adhesive thickness (μm) 4 ± 2 4 ± 2
Total thickness (μm) 44 ± 3 54 ± 3
Color light yellow transparent light yellow transparent
Length (m) L ± 2 L ± 2
Width (mm) W± 0.5 W± 0.5
Peel strength (GB/T2792) N/25mm 5 ± 2 6 ± 2

What is Wet-process TPU expandable cushioning tape
Product Definition：A battery expansion belt is a special type of belt designed for lithium-ion batteries. It has unique expansion characteristics that protect the battery core from external impacts, enhancing the safety of the battery.