CLARE HEDGES
Adhesive Research
Two types of glue
Water based acrylic emulsion adhesives
.
E.g Pro-saide
Useful for sticking latex, foam latex, gelatine and silicone appliances which have a cap
plastic barrier. They are less expensive and good when starting out however are still used professionally too
ADVANTAGES:
They are sticky and flexible.
Relatively inexpensive, especially in comparison to solvent based silicone glues.
DISADVANTAGES:
Dissolves with sweat, cant use with silicone unless encapsulated.
Solvent based silicone adhesives
More expensive but will stick to anything.
ADVANTAGES -
Solvent based silicone adhesives are really strong
DISADVANTAGES -
These glues are much more expensive than the water based glues.
Fig. 79
Stuart Bray and Todd Debrecini have provided a list of the various glues available and the appropriate removers.
http://www.gurumakeupemporium.com/epages/BT4080.sf/en_GB/?ObjectPath=/Shops/BT4080/Products/439[1]/SubProducts/439-0023[1]
4 oz - £89.95
http://www.mouldlife.net/pros-aide-1162-p.asp
2oz - £7.00
http://www.mouldlife.net/aquafix-1165-p.asp
4 oz £7.00
http://www.mouldlife.net/snappy-g-adhesive-1169-p.asp
£65.95 for 4 oz for adhesive, £26.90 4oz
adhesive - 4oz - £105 Thinner - 4oz £49.95
This is a really interesting point which I did not know - that when using adhesives such as Telesis 5, that the longer the piece has been worn, the bond increases as the body heat warms the glue. This is very interesting to know. Body heat does the opposite to Pro-saide as it dissolves the glue. Another interesting point - the firmer you press, the better silicone based adhesives will stick.
Using a little alchohol can reactivate the glue and allow you reposition a folded edge. Can also do this with large areas by powdering and then reactivating with alcohol
Although I have known that you need to wait until the glue is clear, I have not properly considered why. I have in the past sometimes been a bit impatient and perhaps tried to stick my pieces down too soon. Important to be patient and ensure all pros-aide is clear and ready to be stuck.
The method of 'contact' - applying adhesives to both the piece and the skin can be done using water based glues (prosaide) as well as solvent based glues (telesis). Important to consider areas where there is a lot of movement (the mouth). Telesis or Snappy G would be best for using around this area.
EFFECT OF SWEAT
Heat and moisture build up behind an appliance can reduce the effectiveness of a glue. Sweat can dissolve prosaide. Sweat is less of a problem when using foam as it can absorb some of the sweat, where as silicone is not an absorbent material and therefore the sweat only builds up underneath the appliance.
Products available:
TOP GUARD - a glue primer which is sprayed or brushed onto the skin to give a perspiration resistant surface
3RD DEGREE - an silicone adhesive primer which works well with Telesis.
Fig. 80