Page 101 - Industrial Cutting of Textile Materials
P. 101

88                                          Industrial Cutting of Textile Materials















                 (A)                        (B)
                     Large, similar length components
                     Small-size components
                     Fusible components
         Fig. 7.1  Division of a spread (A) into smaller parts (B).




















                                Large, similar length components
                                Small-size components
                                Fusible components
         Fig. 7.2  Separation of different component blocks.

           Blocks of fusible components always are cut with a fabric allowance around them.
         This is added during the marker-making process and varies between 15 and 30 mm in
         width (see Fig. 7.3) (see Section 3.7.2).
           As a large spread is heavy and deformation cannot be permitted, a movable straight-
         knife machine (see Fig. 7.4) or a round-knife cutting machine is used. These move
         during the cutting process, whilst the spread or its parts are kept in a fixed position.
         Because of the shape of the round-knife machines, these cutting devices can be used to
         cut only low spreads (see Section 8.3). After the spread has been divided into smaller
         parts, the operators work with each individual section. Where a spread is small or
         small number of simply shaped components has to be cut, the division of the spread
         into smaller parts is not necessary.
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