Page 47 - November/December-2019
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                                                                                                                                                                                                                                            sewing fine fabrics. However, if the needle is too thin,
                                                                                                                                                                                                                                            thread breakage or skipped stitches may occur. In
                       SAN™ TT 112.70-62 G01
                                                                                                                                                                                                                                            the worst case scenario, the needle may break due
                                                                                                                                                                                                                                            to insufficient stability.
 SAN™ TT Made for special                                                                                                                                                                                                                   The solution: Special application needle SAN® 10

                                                                                                                                                                                                                                            Groz-Beckert has offered the special application
                                                                                                                                                                                                                                            needle SAN® 10 for processing fine knitted and
 challenges  the future. Existing technologies are often not the   which increases the risk of cut filaments. If the yarn is                                                                                                                woven fabrics optimally for many years now. The
                                                                                                                                                                                                                                            specially designed geometry of this needle means it
                                                              damaged in this way during processing, the surface
            optimal solution for a newly developed application.
                                                                                                                                                                                                                                            is both gentle on the material and has sufficient
            With Groz-Beckert experience and expertise, Groz-Beckert
                                                              of this and other applications with comparable
            is able to create the technical requirements not only for   of the product becomes hairy. The special challenges                                                                                                                stability.
 Higher process reliability when knitting   standard cases, but for special cases too. As development   requirements therefore include creating a perfect loop                                                                              Its slim design means that it has a smaller
                                                              structure on the one hand and the durability of the
            partners, Groz-Beckert thus contribute to the
                                                                                                                                                                                                                                            displacement cross-section in the eye area. This
 technical textiles with filament yarns  implementation of your idea.  knitted elements on the other.                                                                                      Excessive displacement of the warp threads and weft   reduces the stress on the loops or the warp threads
                                                              The solution
                                                                                                                                                                                                                                            and weft yarns when the needle is inserted into the
            A field with high potential for new and further
            developments, which seemed unimaginable until     Our special application needle SAN™ TT 112.70-62 G                                                                           yarns can also cause seam puckering. This problem   fabric. This protects the material and prevents
            recently, is technical textiles. New products are being   01 in gauge E 7.2 was specifically designed to                                                                       also increases the greater the size of the needle.  damage.
            created here, new production methods, as well as   optimize the production process in these
            constant new challenges. In order to meet these   applications. With its narrow latch head, the first                                                                                                                                              Even more gentle on the
            challenges successfully and to make use of the    version of the new product range is ideal for                                                                                                                                                    material: The new SAN® 10 XS
            innovation potential, manufacturer need the right tool:   producing tight loops. The increased hook stability is                                                                                                                                   Groz-Beckert has re-designed
            One development that resulted from a specific     the answer to the high tractive forces. The adapted                                                                                                                                              the special application needle
            application is the special application needle SAN™   spring-loaded latch function and the anti-shear effect                                                                                                                                        SAN® 10 XS to enable optimal
            TT. “SAN” stands for special application needle and   guarantee perfect cast-off of the loop and prevent                                                                                                                                           sewing of ever finer fabrics. The
            “TT” stands for technical textiles.               filaments from being cut during the closing action of                                                                                                                                            geometry of the “thinner sister”
                                                              the latch. This solution concept can be adapted for all                                                                                                                                          of the SAN® 10 needle has
            The challenge                                     the latest flat knitting machine technologies.                                                                                                                                                   been optimized and is now
            In case of the production of shoe uppers on flat                                                                                                                                                                                                   even more gentle on the
            knitting machines in the field of technical textiles, tight   The benefit                                                                                                                                                                          material. In addition to its
            loops with a high course density guarantee        As a manufacturer, the use of the special application                                                                                                                                            extremely slim design, it also
            dimensional stability of the shoe. Extreme tractive   needle SAN™ TT means increased productivity                                                                                                                                                  has a cylindrical blade, which
            forces are created during the production of these   through reduced needle consumption and reduced                                                                                                                                                 enables the needle to be
            loops, however, which place high demands on the   machine downtimes. The prevention of the shearing                                                                                                                                                inserted gently into the
            stability of the needle hook. In this application,   effect, the optimized cast-off and the adapted                                                                            Thread breakage, skipped stitches and needle                        material. This helps to prevent
                                                                                                                                                                                           breakage
            multi-thread continuous filament yarns are used,   spring-latch function ensure a perfect loop structure.                                                                                                                                          or reduce damage even with
                                                                                                                                                                                           To prevent material damage and seam puckering, the                  ultra-fine or difficult to sew
                                                                                                                                                                                           needle used should be as thin as possible when                      fabrics.
                         Special application needles                                                                                                                                                                                                           However, the extremely slim


                         SAN  10 and SAN® 10 XS                                                                                                                                                                                                                geometry of the new SAN® 10
                                   ®
                                                                                                                                                                                                                                                               XS does have an impact on its
                                                                                                                                                                                                                                                               stability. This means that there
                                                                                                                                                                                                                                                               is an increased risk of the
            On trend: Fine materials                          that frequently occurs during sewing. The most                                                                                                                                                   needle breaking when using
            Fashion and clothing made from fine fabrics are   frequent problems are                                                                                                                                                                            the SAN® 10 XS. So it is only
            currently really on trend. Whether underwear, shirts,                                                                                                                                                                                              advisable to use the SAN® 10
            blouses, swimwear or sportswear – fabrics are     Material damage and seam puckering                                                                                                                                                               XS if the top priority is
 Shoe uppers produced on  at knitting machines                Sewing fine and ultra-fine fabrics is often extremely                                                                                                                                            preventing material damage. It
            becoming ever finer. For the consumer, the main   difficult. As the sewing needle is inserted into the                                                                                                                                             is also advisable to always
 The development of tailored needles for special   It starts with the idea  priority is comfort and functional characteristics like   material, the loops or the warp threads and weft yarns                                                                   keep the sewing thread as thin
 applications is one of the strengths of Groz-Beckert –   Every innovation starts with the idea of creating   breathability or high elasticity. For the manufacturer,   often experience significant displacement. With fine                                   as possible when using the
 one example from the flat knitting sector is the special   something special, something new or something   on the other hand, processing these fine materials is   fabrics, this can result in loop breaks in extreme                                         SAN® 10 XS.
 application needle SAN™ TT.  better. At this point, the implementation is still far in   a real challenge. This is due to the material damage   cases, particularly when the needle used is too thick.


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