Product Datasheet

Perma-fil Needlemat

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Perma-fil E'Glass Needlemat

Construction:

Saveguard Perma-fil E’glass needlemat has been specifically developed for use in vehicle exhaust silencer applications. Manufactured from 9 micron filament E’glass fibres that are specially carded to produce a high volume batt. This is then mechanically needled to bond the fibres, which results in a dimensionally stable matt or felt, possessing excellent thermal and acoustic insulating properties without any chemical binder.

The mechanical bonding system secures the individual fibres thus eliminating fibre loss via the perforated tubes. Perma-fil needlemat can be supplied pre rolled as packs on cardboard mandrels. Perma-fil packs are wrapped in Polythene sleeves for ease of handling and to reduce any irritation from the glass fibre. We also offer a complete cutting and die cutting service for more complex shapes.

Properties:

Glass Yarns have a minimal amount of surface dressing to assist in processing, this is usually organic ie. starch or silane and will disappear at temperatures above 200C.  Untreated Glass Fabrics are suitable for continuous use at temperatures of up to 550C higher in exhaust applications however tensile strength continues to reduce noticeably as temperatures increase above 400C.

E Glass Fibres are:

are resistant to oils, solvents and most chemicals although contact with hydrofluoric acids, strong alkalis and live steam should be avoided.

are non combustible.

Colour:

have a low thermal conductivity
Technical:
Thermal Conductivity: 0.078 w/mK 300C mean
Loss on Ignition: < 1.2%
Chemical:
E’Glass SiO2 54.1%
Al2O3 15.3%
CaO  17.3%
MgO  4.7%

Na2O

0.6%

B2O3

  8.0%
Availability:

Thickness

4mm

6mm

9mm

12mm

18mm

25mm

Weight per m2 150 Kg/m3

600

900

1350

1800

2700

3600

Weight per m2 130 Kg/m3

520

780

1171

1560

2340

3125

Roll Length

50

50

30

20

15

10
Density:  Available in a range of densities from 100 -160 Kg/m3
Width:  100cm standard ( others available on request)
Typical Applications:
Acoustic insulation media for exhaust silencers

Heatshields

 

The information on this Data Sheet is strictly for guidance only and while provided in good faith cannot be guaranteed. The company reserves the right to alter or update this data as and when additional information is received. The Company’s products are used in a wide range of applications over which the Company has no control therefore the Company excludes all conditions or warranties whether expressed or implied as to the fitness of the product for any particular purpose. Customers must establish product suitability via their own tests

 

Issue No:

1

Page: 1 of 1

Dated:

13th July 1999

File Ref:

prodata\felts\glass\perma-fil

.pdf

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