THOMAS WELDING SYSTEMS
ZONE INDUSTRIELLE, RUE 3
B. 6040 JUMET (BELGIUM)
Tel :+32 71.91.97.60
Fax :+32 71.91.96.71
For information: Fill-in a form
   
Sales Contact  : Mrs Myriam DURANT
Export Manager  : Mr Pascal THOMAS

SSP / SIA  -  Insulation fasteners : Choice of system
 
When fixing insulation boards, sheets, lagging, blocks, mattresses, blankets, quilts, etc..., it is very important that a good mechanical joint is made with the surface to be insulated. Sometimes glue is used but there is a risk that the insulation media will delaminate and the resulting damage will reduce its effectiveness or cause condensation.
Consequently fastening systems which cater for various thickness and give a proper mechanical relationship between the insulated surface and the external face of the insulation are essential.
These more desirable systems normally consist of pins which pass through the insulation media and are fixed to the insulated surface by welding, riveting, or by adhesives. Usually the insulation is held in place by a fastening clip or locking washer. This washer is of sufficient diameter to give a strong joint and to provide a bearing surface to spread the load so as not to damage the vapour barrier or retardant.
Whichever mechanical system is used it is important that they are positioned for best effect.
Around the edges of the insulation where the risk of delamination is more likely there should be more fixings. Other fixings should be distributed uniformly over the rest of the surface to comply with standards or to meet manufacturers recommendations or guidelines.
The range of mechanical insulation fastening systems from THOMAS WELDING SYSTEMS offers the standard types to suit whichever application you prefer. Characteristics of each type are as follows.
 
SSP : Self Stick Pins
 
These are easy to use and handle, ideal for site assembly and require no tools or machines. Suitable for steel or other smooth surfaces which should be clean and dry, free of dust, grease, oil or any other loose matter. Simply remove the release paper backing, place on the surface and impale the insulation over the pin. The locking clip/washer is then pressed on to the pin to complete the final mechanical joint. Bonding takes place immediately but full strength adherence is achieved after 24 hours.
Our self adhesive pins are designed to fix insulating materials to smooth surfaces such as air ducts, attenuators, chambers and enclosures. Their use allows a proper quality fixture speedily and without the risk of corrosion. The adhesive foam backing is of the highest quality and the locking fastener clips ensure an outstanding assembly. In order to meet all requirements, we produce a wide range of pins lengths.

Self-adhesive hangers comprise of a galvanised steel nail (copper or aluminium alternatives on request) firmly mounted on a galvanised steel base which is backed by a self-adhesive, closed cell polyethylene foam substrate.
  
Galvanised spring steel fastening clips (locking washers) are supplied with the hangers. They ensure a perfect upholding of the insulation. These clips ensure the insulation is held securely in place on the pins, acting as a locker washer. A nylon safety point covers can be supplied to cover the ends of the nails for site protection of personnel.
 
SSP Self-adhesive pins
  • Galvanised steel with self-adhesive base 50 x 50 mm
  • Zinc plated steel pins (copper/aluminium on request) diameter 2.7 mm
    and lengths from 19 to 203 mm


      

  Fastening clips
  • Galvanised spring steel
  • Bevelled edges
  • Standard outside diameter 30 mm
  • Optional outside diameter 38 mm

Protective nylon cap

  • Nylon safety point cover

Standard adhesive foam

  • White closed cell polyethylene foam backing
  • Acrilyc adhesive coated on both sides
  • Silicon protective release paper
  • Service temperature ranging from -40° C to + 80° C (+100° C for short periods of time)
  • Resistant to water, detergents, alcohols, alifatic solvents and some aromatic solvents
  • Not for use in application likely to make contact with chlorinated, cetonic or ester solvents
  • Contact us iif in doubt about application or for specific advice.

 

Recommended assembly method
 

1. Install at ambient temperatures above 10° C (preferably between 15 and 25° C)
  


2. Surfaces should be clean and dry, free of
      dust, grease, oil and any other loose matter


3. Remove the protective release paper
     taking care not to touch the adhesive

4. Place the hanger in the required position
and press the base against the surface to be insulated
  

                                
5. Insulation can be impaled immediately and firmly locked with fastening clips
but maximum strength of adherence is achieved after 24 hours
  


6. If necessary, cover the pin with a
   protective nylon cap


 

Specific recommendations for self-adhesive hangers
 
Insulation material Recommended quantity of hangers per square metre
Density Thickness Temp. 23°C Temp. 40°C Temp. 60°C Temp.80°C
20 kg
per cubic metre		 25mm
50mm
100mm		 4
4
4		 4
4
4		 4
4
4		 4
4
4
40 kg
per cubic metre		 25mm
50mm
100mm		 4
4
4		 4
4
4		 4
4
6		 4
6
8
80 kg
per cubic metre		 25mm
50mm
100mm		 4
4
4		 4
4
6		 4
6
8		 6
8
16
120 kg
per cubic metre		 25mm
50mm
100mm		 4
5
6		 5
6
8		 6
8
12		 8
12
24