Printashrink CPF/FR4

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Printashrink CPF/FR4 is a 4:1 shrink ratio heatshrink polyolefin with a working temperature of 135°C. It is a fire retardant sleeve perfect for difficult or irregular shapes where an unusually high shrink ratio is required. Supplied in black as standard, diameters up to 115mm ID are available and can be cut and printed as required.

This 4:1 heatshrink polyolefin tube is designed for commercial or industrial applications where an extremely high ratio is needed to cover irregularly shaped pieces or pass over large components before shrinking. It has excellent electrical, chemical and physical properties and we offer a range of printing and cutting services on this high quality, commercial sleeve making it equally suitable for identification, branding and marking requirements.

Technical Data

Shrink Ratio: 4:1
Shrink Temperature: 100°C
Operating Temperature: -55°C - +135°C
Flame Retardant: Yes
Colours:
- Black
Sizes: 19 - 115
Packing: 1.2 metre lengths, cut to length, cut sleeves
Print: Yes, full range of text and logos in all colours
Approvals: RoHS compliant
Applications / Industries:
- General
- Commercial
- Electrical
- Electronics
- Industrial
- Mechanical
- Automotive

Properties	Typical Values	Test Methods
General
Operating Temperature	-55°C - +135°C
Shrink temperature	-55°C - +135°C
Shrink Ratio	4:1
Physical
Tensile Strength	14Mpa	ISO 37
Ultimate elongation	800% min	ISO 37
Specific gravity	1.35 max	ISO 1183
Water absorption	0.5% max
Thermal
Flammability	Pass	ASTM D876
Heat shock (4hrs)	No dripping, cracking or flowing	ASTM D2671
Low temperature flexibility (4hrs @ -55°C)	No cracking	ASTM D2671
Heat ageing (168hrs)	@ 175°C elongation 350% max	ISO 188 & 37
Electrical
Dielectric strength	22KV/mm min	IEC 243
Chemical
Copper corrosion	No corrosion	ASTM D2761
Fluid resistance	Gasoline, hydraulic fluid, lubricating oil, tensile 5MPa max, elongation 200% max	ISO 1817 & 37
Fungus resistance	Tensile 10MPa max, elongation 250% max	ISO 846 & 37