Page 270 - Industrial Cutting of Textile Materials
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Automated single-ply processing of styles from intricate pattern textiles  257





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                      a - Fabric waste
           Fig. 16.2  Extended length marker to match pattern in multi-ply spread.

           16.3   Work methods to cut styles from intricate
                  pattern fabrics


           During many decades of garment mass production, different work methods and work
           principles are developed and used to process fabrics with intricate patterns. They are
           based on experiences of skilful specialists of the cutting room who are delivering their
           knowledge from one generation to another.
              Up to now, developed and used methods to process styles from intricate pattern
           fabrics can be divided in three groups: manual, semiautomated, and fully automated.

           16.3.1   Manual processing of fabrics with intricate patterns

           Manual processing has richest traditions and longest application time and still is ac-
           tual in garment industry. A marker is performed, directly on a fabric, using real-size
           pattern pieces printed on paper (see  Chapter  14).  To simplify nesting and raise
           pattern-matching accuracy, sectioned markers are performed (see Fig. 16.3). Certain
           allowances around pattern pieces are added to compensate pattern-matching impreci-
           sion in further work process.
              Spreading and cutting is performed in two work steps (Section 15.2). During the
           first step, a lay of plies matching the fabric pattern is created. To fix, align, and coordi-
           nate the positions of the patterns, fabric plies use to be spread on special pins. The pins
           are located under first fabric ply corresponding key positions within the repeat of the
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