j&a 3030 Operator's Manual page 6

OPENING OUT GARMENTS
Wherever possible, only heat seal onto one thickness of fabric
This, for example, entails opening out garments and putting only
either the front or back, as appropriate, over the base plate.
FABRIC FINISHES
Modern fabrics can be coated or finished with a variety of
different chemicals to achieve different fabric properties and
performances. Most do not affect the strength of adhesion of J&A
heat seal products. On the rare occasions that the adhesion is not
as strong as would be expected and fabric coatings are suspected
as the cause, try heating the area of fabric to be decorated using
the heat seal machine before applying the badge or transfer as
this can evaporate away or "burn off" the finish in this area.
ADHESIVE SHOWING ROUND
EDGE OF TRANSFERS
This can sometimes be seen when applying transfers to darker
garments. In such cases the visible adhesive can be greatly
reduced by removing the transfer release-paper in the normal
manner after heatsealing and then sealing the transfer again for
about 5 seconds.
'DELICATE' FABRICS
Some fabrics with a low melt point can show an imprint of the
heat plates after heat sealing. This effect can be reduced /
eliminated by, prior to sealing, covering the transfer and whole
area of the garment that will be touched by the top plate with a
sheet of silicone paper. Also reduce temperature to lowest
possible for the type of product used.
GARMENT SEAMS, STUDS ETC
Wherever possible, make sure that any raised or thick parts of
the garment, such as seams, buttons, studs etc fall outside of
the heat area as shown below. Such factors entail reduced
pressure and unsatisfactory adhesion which is not always
immediately apparent.
INCORRECT POSITION
CORRECT POSITION
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