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Improved yarn guides mean fewer design restrictions
The use of multiple yarn guides on lace raschel machines
Types of multiple yarn guides
The KARL MAYER Group currently offers seven different types of multiple yarn guides, i.e. yarn guides with 3, 5, 7, 12 and 24 needles and 12 needles 1 in/1 out for a gauge of E 24, and with 3, 5, 7, 28 and 14 needles 1 in/1 out for a gauge of E 28.
The number of multiple yarn guides per string is limited. Fig. 2 shows the maximum ar-rangement. The distance between the individual yarn guides on the same string is also re-stricted. For example, when using multiple yarn guides with 3, 5 and 7 needles, it is a mini-mum of 43 needles at a gauge of E 24, and 50 needles at a gauge of E 28 (In Fig. 2, value X is the distance between the centre points of the yarn guides).
The yarn guides can be changed very easily and accurately. With the types having up to 7 needles, this is done simply by loosening and reconnecting a plug-in socket. With the multi-ple yarn guides having a greater number of needles, a special yarn guide bracket is used, which is fixed onto the string bar and used for connecting the multiple yarn guides.
Recommendations for use
The use of multiple yarn guides with 3, 5, 7 and 24 needles in the picot edging bars is recommended for producing a very neat fabric edge. This is further enhanced by using a suitable material, e.g. Sulfron, which is steamed under the influence of heat.
The use of multiple yarn guides also enables a separating pillar stitch construction to be wor-ked without a ground bar, and offers maximum scope when processing elastane.
Fabrics having different functional zones can be produced if multiple yarn guides with 24 needles are used in the rear shog rows for processing the elastic yarns. Bras, functional un-derwear and sportswear with zones having different stretch characteristics can be produced. These shape the body and provide maximum comfort.
The yarn guides processing the elastane yarn are arranged in several shog rows on ma-chines having a gauge of E 24 and E 28 to insert yarn over a large area. This configuration enables large areas to be completely filled-in over, e.g. 48 or 72 needles, with the stretch yarn. In this case, the elastane yarns are fed-in from the second beam station behind the machine.
The shog rows without multiple guides can also be fitted with single yarn guides to extend the patterning possibilities.
When using this combination within a shog row, it should be remembered that the guide height setting is a compromise between the optimum guide height for processing the pattern yarns and the guide height for processing elastane.
Alternatively all the multiple yarn guides can be fitted with different guides (LC 26 or LC 27) for processing different counts and types of yarns
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