Sewing thread and zip recommendations for boots
Coats provides a wide range of industrial sewing threads and zips for boots. Coats threads and zips, used for manufacturing outdoor boots, are resistant to sunlight, fungus/mould, UV radiation and severe abrasion.
Coats threads & zips
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Below are recommended stitch types for this end use item.
Coats industrial sewing threads are available in a range of fibre types and finishes, each designed to meet particular customer needs. Please see this comprehensive range below.
|Image of stitch||Machine type||Stitch type||Needle thread||Under thread|
|1||Insert zip||301||Nylbond||105 or 70||30 or 40||Nylbond||105 or 70||30 or 40|
|2||Back Closing||301||Nylbond||105 or 70||30 or 40||Nylbond||105 or 70||30 or 40|
|3||Aprons / Vamp||301||Nylbond||105 or 70||30 or 40||Nylbond||105 or 70||30 or 40|
|4||Side seams||301||Nylbond||105 or 70||30 or 40||Nylbond||105 or 70||30 or 40|
Key: CE = Closed End; OE = Open End; 2WOE = 2 Way Open End; 2WCE = 2 Way Closed End; X-Form / O-Form
|Opti LUX||Opti M||Opti RT||Opti S|
|Zips for decoration only||LUX8 CC||-||M60 CC||-||RT10 CC||Metallised||-||-|
|LUX6 CC||-||M40 CC||-||-||-||-||-|
|LUX4 CC||-||M80 CC||-||-||-||-||-|
|Opening||LUX8 CC||-||M60 CC||-||RT10 CE||Reversed, Metallised, Zero-cut toptape ends||S60 CC||Reversed, Reflective, Contrast, Hot melt adhesive, Stitch line, Bi-adhesive, Black line, HydroF|
|LUX4 CE||-||M60 CE||-||RT10 CC||Reversed, Metallised||S80 CE||HydroS|
|LUX8 CE||-||M80 CC||-||-||-||S60 CE||Reversed, Reflective, Contrast, Zero-cut toptape ends, Stitch line, Boot curved, Pin bottom stop, Black line, HydroF, Hot melt adhesive, Bi-adhesive|
|LUX6 CE||-||M80 CE||-||-||-||-||-|
|LUX6 CC||-||M40 CE||-||-||-||-||-|
- When attaching the zip, we recommend a minimum gap of 2 mm between the spiral edge and edge of the leather, to ensure the slider runs correctly. This is as per the SATRA recommendation.
- Excessive glue should be removed. Caution should be taken to ensure the glue pots and dispensers are positioned away from the teeth and slider.
- During the soiling out process, the side pushes can be an issue if they press against the slider.
- Attention must be taken with the thickness, width and positioning of the zip guards.
- When the zip goes through the curing tunnel, the slider should be pulled to the top of the boots, and the boots should be laid down with the slider facing upwards.
Sewing recommendation for Opti S zips – Whilst sewing, the presser foot can accidently go over the spiral and stitch line and as a consequence this can affect the slider running.
Sewing recommendations for Opti M zips - When applying the zip to the bottom edge, the sewing line needs to be just below the bottom stop. Care must be taken to keep a straight sewing line, because there is a risk of needle breakage if it comes into contact with the teeth.
Since conditions and applications vary considerably in the use of the thread, Coats and its distributors can make no guarantee of results. These recommendations are given in good faith but without warranty or liability on the company or its employees. The thread user should assure herself or himself by preliminarily testing that the thread is suitable for the end use intended. Technical information listed above is based on current averages and should be taken only as indicative.