are embedded lines that are created by pressing, misfolding or
crinkling paper or card stock materials. Some collectors misclassify
wrinkles with creases; wrinkles are not as deep or as damaging
as creases. Creases go deeper into the paper and can actually
take away the color leaving a white space. Wrinkles are more surface
defects and normally do not take away the color or leave white
marks. Creases will actually break through the coating and into
the color, whereas wrinkles do not.
are most commonly the result of mishandling, improper folding,
improper storage, and lack of care in moving the poster.
ON POSTER VALUE
impact a poster's overall value, depending on how many there are
and where they are located. Creases in the border would have little
or no affect; creases on the artwork would have limited impact,
depending on the number and severity.
creases can be removed by either utilizing a heavy duty clothes
steamer or a heat press. Even though it is a simple process, care
should be taken anytime one is handling a poster. If there are
any doubts or if the poster is valuable in some respect, a professional
restorer should be contacted.