Page 139 - CTS - Sewing Technology - TP - Volume - 2-0

SEWING TECHNOLOGY - CITS

Fig 1 Fig 2

Causes
• Mixing of fabrics used in production
• Variations in the production process with regard to time and speed
• Improper cutting, bundling and/or numbering
• Unequal fabric stretching
Prevention
Using the same base material and set of parameters for each production lot can effectively prevent shade
variation.
When visiting a factory that manufactures raw textiles, it’s critical to ensure workers are only combining garments
of the same color and not taking shortcuts when cutting and bundling. Properly numbering textile types prevents
mistakenly combining cuts that vary in shade.
3 Dirt/Stains
Stains are fairly common among dyed textiles and are defined as spots or patches of differing color. Textiles are
never truly safe from stains because they can occur anytime during or after production if they’re not kept in an
area with adequate protection.
Causes: Stains can appear on fabrics from just about any source. Dirt from the factory floor, oil from machinery
and dyes are all known sources. Stains are relatively easy to identify and prevent so long as suppliers are vigilant
about fabric quality.
Prevention
Your manufacturer can prevent stains during production by regularly cleaning production machines and equipment
to ensure no random oils, grease or dyes make their way onto the textile. (Fig 3)
Wrapping the finished rolls of fabric in plastic and storing them in a separate area away from the dying area can
help avoid post-production stains.
4 Uneven Dyeing/Printing/Dye marks
Dye marks are irregular patches on the surface of raw textiles. Dye marks are typically the result of: (Fig 4)

Fig 3 Fig 4

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CITS : Apparel - Sewing Technology - Exercise 30