…or how to prevent hems unraveling….

1. …or how to prevent hems unraveling….

2. The problem of blindstitched hems…. • Easy “run back” of the blind stitching due to poor stitch run over on the seam end – which makes the seam unravel easily - so the hem will fall down…. • Light weight and tightly woven fabrics for formal wear which tend to problems with damages by the needle penetration – and pick up marks – are sewn very carefully – maybe not catching enough of the material to get a stable seam – and maybe sometimes there are skipped stitches - so the hem will fall down….

3. Field of application: Overlocking seams in connection with blind stitch hems of • Men’s trousers • Ladies trousers • Skirts • Dresses

4. Application of • contains a low temperature meld point polymer. Construction is 85% low melt Polyamide and 15% filament Polyester “carrier thread”. • can be utilized as an additional or looper thread on a 3-thread-overlock seam (type BS 504) for the construction of hems (trousers, skirts dresses etc.) an enables supplementary security for the blind stitch hem. • Intermediate or final iron or pressing operations will activate the product. After cooling Strongfix will “fuse” in the seam and secure the fabric layers. • In the event that the hem is disturbed or opened by the end user, the Stronfix can be “reactivated” several times.

5. Benefit of using • No additional sewing operation • No „hard taped“ feeling and appearance • No changing of overall aesthetic and appearance of the finished product • Easy to change length of legs

6. Sewing thread recommendation / Method No. 1: : 85 % polyamide /15% polyester modified multifilament thread : 100 % Polyester texturized (bulk yarn) : 100 % Polyester corespun : 100 % Polyester continous filament

7. Method No. 1: Stitch type: 504 (3-thread-overlocking): C B A

8. Method No. 1 / Version 1, feeding from top via pressure foot:

9. Method No. 1 / Version 2, feeding from top via pressure foot: Additional hole ( app. 1,5 mm) in the pressure foot for feeding Stronfix from the top. (Machine: Yamato YA 6003H-04DF)

10. Method No. 1 / Version 3, feeding from bottom side via stitch plate: Additional small guiding tube on the bottom side of stitch plate ( app. 1,5 mm) for feeding Strongfix from the bottom.

11. Sewing thread recommendation / Method No. 2: For heavy materials : 85 % polyamide /15% polyester modified multifilament thread : 100 % Polyester texturized (bulk yarn) : 100 % Polyester corespun

12. Method No. 2: For heavy materials Stitch type: 504 (3-thread-overlocking): C B A

13. Conclusion • Strongfix has unique technical benefits resulting in near elimination of hems unravelingand saving loss confidence in consumer.

14. Details for ironing • The melting part of Stronfix (85%) is melting by a temperature of 110°C. • Strongfix can be „activated“ by the usually used ironing equipment and machine adjustment in garment production • Attention: Strongfixmust not get in direct contact to the pressing device, hand iron or ironing table since the melting part wouldimmediately stick to the surface of the equipment. Method 2: Method 1: Strongfixmust be inbetween two layers of material / fabric during ironing!

15. …some more technical facts: • Strongfix equates to a Tkt.No. 30 • Due to its construction it is suitable to only a limited extent for being used as needle thread (required needle size: Nm 120 / size 19!) • The remaining thread is comparable to Serafil 120/2. (Continuous filament , Nm 160/3) • Rewinding of Strongfix to get smaller make-up most probably leads to tremendous problems during sewing afterwards.