TUFNOL materials for engineering

TUFNOL Rolled Laminated Paper Tubes 

Phenolic Paper laminate 

Paper/phenolic resin rolled laminated plastic tubes

(SRBP - Synthetic Resin Bonded Paper)

The TUFNOL range of rolled laminated paper tubes have been developed to complement the range of moulded tubes.  RL tubes have good mechanical strength, low water absorption and are resistant to weathering and to chemical attack by mild acids and alkalis. They are used where electrical insulation is required and in many instances where the requirement is simply for a low cost, strong and rigid non-metallic tube. Three grades are available: ·  Grade RL P/1 – A low cost commercial quality grade, suitable for low voltage electrical applications and some mechanical uses. ·  Grade RL P/2 – A good electrical insulator with good dielectric properties.  Made to BS EN 61212 Type PF CP 23. ·  Grade RL P/3 – Superior mechanical properties to Grade RL P/1, particularly with regard to its higher bursting strength.  Machines well.

What are TUFNOL RL paper tubes used for? In general, Grade RL P/2 is used primarily for electrical insulation components such as bobbins, coil formers, insulating spacers and sleeving.  The other grades are used for low voltage insulation and for low cost mechanical applications, such as handles on welding guns, structural components and containers for pyrotechnics, and similar items.

TYPES AVAILABLE	Tubes
Grade RL P/1     – natural colour	Yes
Grade RL P/2     – natural colour                         – black	Yes Yes
Grade RL P/3     – natural colour	Yes

Minimum order quantities may apply.

Click here for TUFNOL RL Paper Tubes STANDARD SIZES

SPECIFICATIONS for TUFNOL Rolled Paper Tubes

BRITISH STANDARDS	Current Standards	Recent Standards (now obsolete)
Grade RL P/1 tube	BS EN 61212-3-1 Type PF CP 22	-
Grade RL P/2 tube	BS EN 61212-3-1 Type PF CP 23 & 24	BS 6128 Part 8 Type PF CP 81 & 82
Grade RL P/3 tube	BS EN 61212-3-1 Type PF CP 21	-

PHYSICAL PROPERTIES

TUFNOL RL Paper Tubes

PROPERTY	Grade RL P/1 TYPICAL RESULT	Grade RL P/2 TYPICAL RESULT	Grade RL P/3 TYPICAL RESULT	UNITS
Axial compressive strength	90	160	90	MPa
Cohesion between layers	120	180	150	MPa
Water absorption	4.0	1.5	4.0	mg/cm2
Insulation resistance after immersion in water	5x106	2 x108	2 x106	ohms
Loss tangent at 1 MHz	-	0.03	-	-
Permittivity at 1MHz	-	4.3	-	-
Axial electric strength in oil at 90ºC	-	4.5	-	kV
Electric strength normal to axis in oil at 90ºC
- 1.6mm wall	-	11	-	MV/m
- 3.0mm wall	-	9	-	MV/m
Relative density	1.21	1.27	1.21	-
Maximum working temperature**
- continuous	90	90	90	ºC
- intermittent	120	120	120	ºC
Thermal classification	Class E	Class E	Class E	-

Test methods as BS EN 61212-2, where applicable.

**Users of highly stressed components at temperatures approaching the maximum are recommended to seek further advice from Tufnol Composites Ltd.

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A full machining service is available from Tufnol for this and many other engineering plastics and composites.

Tufnol Composites Ltd, Wellhead Lane, Perry Barr, Birmingham B42 2TB, United Kingdom.

Quality Registration BS EN ISO 9001:2000, BS EN 9100:2003 and AS 9100 Reg. No. FM 90942

The information given here is believed to be correct, but completeness and accuracy are not guaranteed. The user shall be fully responsible for determining the suitability of products for the intended use.