I drycleaned a raincoat containing polyester, polyurethane, and cotton
that had a care label that instructed “Dry Clean only.” After
drycleaning I saw yellow stains and streaks all over the coat. What was the
cause of it?
A: Such garments are usually
made of fabrics bonded together with glue. These fabrics should have a
sufficiently high peel bond strength to resist separation under normal
conditions of expected wear and later cleaning for a reasonable period of time.
These fabrics failed to have the necessary resistance to the proper care
process. The bonded fabrics lacked resistance to accepted cleaning procedures
because of insufficient time, temperature or pressure used in the original
fusing process during manufacture.
The yellowing, stains or
streaks were due to strike-through of the bonding agent. This is caused when
the fusible adhesive of the interlining over-liquified during bonding due to
tempera- tures that were too high, pressure that was too high or a fusing time
that is too long. Strike-through causes the adhesive to come through the face
of the fabric, and since this fabric has a polyurethane coating the adhesive
would be trapped between the fabric and the coating. This explains the poor
bond strength as well.
yellow stains and streaks are attributed to strike-through of the bonding
agent. The manufacturer must ensure that the bonded fabrics can withstand
accepted cleaning procedures.