Page 29 - Curriculum Visions Dynamic Book

At this stage the natural glue is dissolved away by boiling the fibres in a soap solution.
Once the silk has been cleaned, it is soft. This silk is also shiny – a property that comes from the flat faces of the triangular section
of the filaments. The thickness of the yarn is measured in a scale called denier, which is a scale based on the weight in grams of 9,000 m of silk.
Special treatments are sometimes applied to give the silk a rustling sound when it is made into clothing.
Silk can absorb up to a third of its weight in moisture before it feels damp. It is easy to
dye and does not easily rot.
Silk
(Right and below) Silk is expensive and so is used in special products such as wedding dresses, silk flowers, and ties.
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