Color difference at a seam is defined as a
Sidematch; the seam is darker on one side, lighter on the other..
In manufacturing sidematch problems can occur
in tufting, shearing or during the dyeing process; causing texture, pile
height difference or color variations from side to side in the roll.
Installation Causes:
Reversing the nap of an adjoining breadth,
improper pattern match, improper roll sequence, seam peaking, gaps or
overlapped backing at the seam.
Seam placement is a vital concern when trying
to eliminate the potential for sidematch complaints. Whenever possible seams
should be placed where indirect light does not strike across the seam; seam
should run into the light when possible.
Resolution:
True color sidematch is often repaired by
dyeing (feather blending) the lighter side of the seam.
Textural difference is often corrected with steaming with vapor steam; not
to be confused with carpet steam cleaning.
Feather blending is typically performed with
an air brush or other spray type equipment. The dye is mixed to match the
darker side of the carpet and sprayed a few feet into the lighter panel.
Feather blending permanently removes the appearance of the dark/light sides,
and the visibility of the seam.
Feather blending and steaming are viable
solutions to color and textural differences at carpet seams.
Pole-Roll Crush Marks
The repeating bands running side to side in this hallway are the result of
pole crush marks.
Roll or pole crush usually appears across the width of the carpet as areas
of the pile yarn that have flattened due to the weight of the roll. Areas of
roll crush may appear darker or lighter and are usually identified as
widthwise bands. Roll crush is not considered a manufacturing defect. Most
roll crush occurs as a result of stacking a large number of rolls on top of
one another; this rarely occurs at the manufacturing level since rolls are
stored one roll in height.
Roll or pole crush marks on Nylon or Wool
carpet can be serviced with Steaming; Vapor steam, not to be confused with
Steam Cleaning.